mirror of https://github.com/docker/cli.git
validate manpages target
Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>
This commit is contained in:
CrazyMax
parent
a650f4ddd0
commit
7dc35c03fc
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@ -2,6 +2,8 @@
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/cli/winresources/versioninfo.json
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/cli/winresources/*.syso
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/man/man*/
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/man/vendor/
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/man/go.sum
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/docs/yaml/
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/docs/vendor/
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/docs/go.sum
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@ -40,6 +40,7 @@ jobs:
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matrix:
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target:
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- yamldocs # ensure yamldocs target runs fine
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- manpages # ensure manpages target runs fine
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steps:
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-
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name: Checkout
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@ -48,5 +49,6 @@ jobs:
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fetch-depth: 0
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-
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name: Run
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shell: 'script --return --quiet --command "bash {0}"'
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run: |
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make -f docker.Makefile ${{ matrix.target }}
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@ -10,9 +10,6 @@ Thumbs.db
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/build/
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/cli/winresources/versioninfo.json
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/cli/winresources/*.syso
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/man/man1/
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/man/man5/
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/man/man8/
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profile.out
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# top-level go.mod is not meant to be checked in
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2
Makefile
2
Makefile
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@ -11,7 +11,7 @@ _:=$(shell ./scripts/warn-outside-container $(MAKECMDGOALS))
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.PHONY: clean
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clean: ## remove build artifacts
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rm -rf ./build/* cli/winresources/rsrc_* ./man/man[1-9] docs/yaml
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rm -rf ./build/* man/man[1-9] docs/yaml
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.PHONY: test
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test: test-unit ## run tests
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@ -0,0 +1,3 @@
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/vendor
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/man*
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/go.sum
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@ -12,4 +12,6 @@ Cobra command or amend the Markdown files for legacy pages.
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From within the project root directory run:
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make manpages
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```shell
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$ make -f docker.Makefile manpages
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```
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@ -1,3 +1,7 @@
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// This file is intended for use with "go run"; it isn't really part of the package.
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// +build manpages
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package main
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import (
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@ -18,6 +22,8 @@ import (
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const descriptionSourcePath = "man/src/"
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func generateManPages(opts *options) error {
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log.SetFlags(0)
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header := &doc.GenManHeader{
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Title: "DOCKER",
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Section: "1",
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@ -73,6 +79,7 @@ func loadLongDescription(cmd *cobra.Command, path string) error {
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continue
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}
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log.Printf("INFO: %s found\n", fullpath)
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content, err := os.ReadFile(fullpath)
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if err != nil {
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return err
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@ -0,0 +1,15 @@
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module github.com/docker/cli/man
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// dummy go.mod to avoid dealing with dependencies specific
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// to manpages generation and not really part of the project.
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go 1.16
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//require (
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// github.com/docker/cli v0.0.0+incompatible
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// github.com/cpuguy83/go-md2man/v2 v2.0.1
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// github.com/spf13/cobra v1.2.1
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// github.com/spf13/pflag v1.0.5
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//)
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//
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//replace github.com/docker/cli v0.0.0+incompatible => ../
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@ -1,7 +0,0 @@
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// +build never
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package main
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// Not used, but required for generating other man pages.
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// Import it here so that the package is included by go modules.
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import _ "github.com/cpuguy83/go-md2man/v2"
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@ -1,22 +0,0 @@
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#!/usr/bin/env bash
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set -e
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# get into this script's directory
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cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
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[ "$1" = '-q' ] || {
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set -x
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pwd
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}
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for FILE in *.md; do
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base="$(basename "$FILE")"
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name="${base%.md}"
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num="${name##*.}"
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if [ -z "$num" -o "$name" = "$num" ]; then
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# skip files that aren't of the format xxxx.N.md (like README.md)
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continue
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fi
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mkdir -p "./man${num}"
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go-md2man -in "$FILE" -out "./man${num}/${name}"
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done
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@ -0,0 +1,10 @@
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// +build tools
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package main
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import (
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_ "github.com/cpuguy83/go-md2man/v2"
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_ "github.com/spf13/cobra"
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_ "github.com/spf13/cobra/doc"
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_ "github.com/spf13/pflag"
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)
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@ -1,17 +1,50 @@
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#!/usr/bin/env bash
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# Generate man pages for docker/cli
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set -eu -o pipefail
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mkdir -p ./man/man1
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set -eu
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if ! command -v go-md2man &> /dev/null; then
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# yay, go install creates a binary named "v2" ¯\_(ツ)_/¯
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go build -o "/go/bin/go-md2man" ./vendor/github.com/cpuguy83/go-md2man/v2
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fi
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: "${MD2MAN_VERSION=v2.0.1}"
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# Generate man pages from cobra commands
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go build -o /tmp/gen-manpages github.com/docker/cli/man
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/tmp/gen-manpages --root "$(pwd)" --target "$(pwd)/man/man1"
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export GO111MODULE=auto
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# Generate legacy pages from markdown
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./man/md2man-all.sh -q
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function clean {
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rm -rf "$buildir"
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}
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buildir=$(mktemp -d -t docker-cli-docsgen.XXXXXXXXXX)
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trap clean EXIT
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(
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set -x
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cp -r . "$buildir/"
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cd "$buildir"
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# init dummy go.mod
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./scripts/vendor init
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# install go-md2man and copy man/tools.go in root folder
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# to be able to fetch the required dependencies
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go mod edit -modfile=vendor.mod -require=github.com/cpuguy83/go-md2man/v2@${MD2MAN_VERSION}
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cp man/tools.go .
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# update vendor
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./scripts/vendor update
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# build gen-manpages
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go build -mod=vendor -modfile=vendor.mod -tags manpages -o /tmp/gen-manpages ./man/generate.go
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# build go-md2man
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go build -mod=vendor -modfile=vendor.mod -o /tmp/go-md2man ./vendor/github.com/cpuguy83/go-md2man/v2
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)
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mkdir -p man/man1
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(set -x ; /tmp/gen-manpages --root "." --target "$(pwd)/man/man1")
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(
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cd man
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for FILE in *.md; do
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base="$(basename "$FILE")"
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name="${base%.md}"
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num="${name##*.}"
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if [ -z "$num" ] || [ "$name" = "$num" ]; then
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# skip files that aren't of the format xxxx.N.md (like README.md)
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continue
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fi
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mkdir -p "./man${num}"
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(set -x ; /tmp/go-md2man -in "$FILE" -out "./man${num}/${name}")
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done
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)
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@ -10,7 +10,6 @@ require (
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github.com/Microsoft/go-winio v0.4.19 // indirect
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github.com/containerd/containerd v1.5.5
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github.com/coreos/etcd v3.3.25+incompatible // indirect
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github.com/cpuguy83/go-md2man/v2 v2.0.1
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github.com/creack/pty v1.1.11
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github.com/docker/distribution v2.7.1+incompatible
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github.com/docker/docker v20.10.7+incompatible
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|
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@ -193,8 +193,6 @@ github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfc
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github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA=
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github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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github.com/cpuguy83/go-md2man/v2 v2.0.1 h1:r/myEWzV9lfsM1tFLgDyu0atFtJ1fXn261LKYj/3DxU=
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github.com/cpuguy83/go-md2man/v2 v2.0.1/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
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github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
|
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github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
|
||||
github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
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|
|
@ -555,8 +553,6 @@ github.com/prometheus/procfs v0.0.11/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4
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github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
|
||||
github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
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github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
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||||
github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
|
||||
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
|
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github.com/ryanuber/columnize v0.0.0-20160712163229-9b3edd62028f/go.mod h1:sm1tb6uqfes/u+d4ooFouqFdy9/2g9QGwK3SQygK0Ts=
|
||||
github.com/safchain/ethtool v0.0.0-20190326074333-42ed695e3de8/go.mod h1:Z0q5wiBQGYcxhMZ6gUqHn6pYNLypFAvaL3UvgZLR0U4=
|
||||
github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
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||||
|
|
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|||
|
|
@ -1,2 +0,0 @@
|
|||
go-md2man
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bin
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|
|
@ -1,8 +0,0 @@
|
|||
FROM golang:1.8 AS build
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COPY . /go/src/github.com/cpuguy83/go-md2man
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WORKDIR /go/src/github.com/cpuguy83/go-md2man
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||||
RUN CGO_ENABLED=0 go build
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|
||||
FROM scratch
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||||
COPY --from=build /go/src/github.com/cpuguy83/go-md2man/go-md2man /go-md2man
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ENTRYPOINT ["/go-md2man"]
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|
|
@ -1,21 +0,0 @@
|
|||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2014 Brian Goff
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
|
|
@ -1,35 +0,0 @@
|
|||
GO111MODULE ?= on
|
||||
LINTER_BIN ?= golangci-lint
|
||||
|
||||
export GO111MODULE
|
||||
|
||||
.PHONY:
|
||||
build: bin/go-md2man
|
||||
|
||||
.PHONY: clean
|
||||
clean:
|
||||
@rm -rf bin/*
|
||||
|
||||
.PHONY: test
|
||||
test:
|
||||
@go test $(TEST_FLAGS) ./...
|
||||
|
||||
bin/go-md2man: actual_build_flags := $(BUILD_FLAGS) -o bin/go-md2man
|
||||
bin/go-md2man: bin
|
||||
@CGO_ENABLED=0 go build $(actual_build_flags)
|
||||
|
||||
bin:
|
||||
@mkdir ./bin
|
||||
|
||||
.PHONY: mod
|
||||
mod:
|
||||
@go mod tidy
|
||||
|
||||
.PHONY: check-mod
|
||||
check-mod: # verifies that module changes for go.mod and go.sum are checked in
|
||||
@hack/ci/check_mods.sh
|
||||
|
||||
.PHONY: vendor
|
||||
vendor: mod
|
||||
@go mod vendor -v
|
||||
|
||||
|
|
@ -1,15 +0,0 @@
|
|||
go-md2man
|
||||
=========
|
||||
|
||||
Converts markdown into roff (man pages).
|
||||
|
||||
Uses blackfriday to process markdown into man pages.
|
||||
|
||||
### Usage
|
||||
|
||||
./md2man -in /path/to/markdownfile.md -out /manfile/output/path
|
||||
|
||||
### How to contribute
|
||||
|
||||
We use go modules to manage dependencies.
|
||||
As such you must be using at lest go1.11.
|
||||
|
|
@ -1,23 +0,0 @@
|
|||
go-md2man 1 "January 2015" go-md2man "User Manual"
|
||||
==================================================
|
||||
|
||||
# NAME
|
||||
go-md2man - Convert markdown files into manpages
|
||||
|
||||
# SYNOPSIS
|
||||
go-md2man -in=[/path/to/md/file] -out=[/path/to/output]
|
||||
|
||||
# Description
|
||||
go-md2man converts standard markdown formatted documents into manpages. It is
|
||||
written purely in Go so as to reduce dependencies on 3rd party libs.
|
||||
|
||||
By default, the input is stdin and the output is stdout.
|
||||
|
||||
# Example
|
||||
Convert the markdown file "go-md2man.1.md" into a manpage.
|
||||
|
||||
go-md2man -in=go-md2man.1.md -out=go-md2man.1.out
|
||||
|
||||
# HISTORY
|
||||
January 2015, Originally compiled by Brian Goff( cpuguy83@gmail.com )
|
||||
|
||||
|
|
@ -1,5 +0,0 @@
|
|||
module github.com/cpuguy83/go-md2man/v2
|
||||
|
||||
go 1.11
|
||||
|
||||
require github.com/russross/blackfriday/v2 v2.1.0
|
||||
|
|
@ -1,2 +0,0 @@
|
|||
github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
|
||||
github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
|
||||
|
|
@ -1,51 +0,0 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
|
||||
"github.com/cpuguy83/go-md2man/v2/md2man"
|
||||
)
|
||||
|
||||
var inFilePath = flag.String("in", "", "Path to file to be processed (default: stdin)")
|
||||
var outFilePath = flag.String("out", "", "Path to output processed file (default: stdout)")
|
||||
|
||||
func main() {
|
||||
var err error
|
||||
flag.Parse()
|
||||
|
||||
inFile := os.Stdin
|
||||
if *inFilePath != "" {
|
||||
inFile, err = os.Open(*inFilePath)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
}
|
||||
defer inFile.Close() // nolint: errcheck
|
||||
|
||||
doc, err := ioutil.ReadAll(inFile)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
out := md2man.Render(doc)
|
||||
|
||||
outFile := os.Stdout
|
||||
if *outFilePath != "" {
|
||||
outFile, err = os.Create(*outFilePath)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
defer outFile.Close() // nolint: errcheck
|
||||
}
|
||||
_, err = outFile.Write(out)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
}
|
||||
|
|
@ -1,14 +0,0 @@
|
|||
package md2man
|
||||
|
||||
import (
|
||||
"github.com/russross/blackfriday/v2"
|
||||
)
|
||||
|
||||
// Render converts a markdown document into a roff formatted document.
|
||||
func Render(doc []byte) []byte {
|
||||
renderer := NewRoffRenderer()
|
||||
|
||||
return blackfriday.Run(doc,
|
||||
[]blackfriday.Option{blackfriday.WithRenderer(renderer),
|
||||
blackfriday.WithExtensions(renderer.GetExtensions())}...)
|
||||
}
|
||||
|
|
@ -1,336 +0,0 @@
|
|||
package md2man
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"strings"
|
||||
|
||||
"github.com/russross/blackfriday/v2"
|
||||
)
|
||||
|
||||
// roffRenderer implements the blackfriday.Renderer interface for creating
|
||||
// roff format (manpages) from markdown text
|
||||
type roffRenderer struct {
|
||||
extensions blackfriday.Extensions
|
||||
listCounters []int
|
||||
firstHeader bool
|
||||
firstDD bool
|
||||
listDepth int
|
||||
}
|
||||
|
||||
const (
|
||||
titleHeader = ".TH "
|
||||
topLevelHeader = "\n\n.SH "
|
||||
secondLevelHdr = "\n.SH "
|
||||
otherHeader = "\n.SS "
|
||||
crTag = "\n"
|
||||
emphTag = "\\fI"
|
||||
emphCloseTag = "\\fP"
|
||||
strongTag = "\\fB"
|
||||
strongCloseTag = "\\fP"
|
||||
breakTag = "\n.br\n"
|
||||
paraTag = "\n.PP\n"
|
||||
hruleTag = "\n.ti 0\n\\l'\\n(.lu'\n"
|
||||
linkTag = "\n\\[la]"
|
||||
linkCloseTag = "\\[ra]"
|
||||
codespanTag = "\\fB\\fC"
|
||||
codespanCloseTag = "\\fR"
|
||||
codeTag = "\n.PP\n.RS\n\n.nf\n"
|
||||
codeCloseTag = "\n.fi\n.RE\n"
|
||||
quoteTag = "\n.PP\n.RS\n"
|
||||
quoteCloseTag = "\n.RE\n"
|
||||
listTag = "\n.RS\n"
|
||||
listCloseTag = "\n.RE\n"
|
||||
dtTag = "\n.TP\n"
|
||||
dd2Tag = "\n"
|
||||
tableStart = "\n.TS\nallbox;\n"
|
||||
tableEnd = ".TE\n"
|
||||
tableCellStart = "T{\n"
|
||||
tableCellEnd = "\nT}\n"
|
||||
)
|
||||
|
||||
// NewRoffRenderer creates a new blackfriday Renderer for generating roff documents
|
||||
// from markdown
|
||||
func NewRoffRenderer() *roffRenderer { // nolint: golint
|
||||
var extensions blackfriday.Extensions
|
||||
|
||||
extensions |= blackfriday.NoIntraEmphasis
|
||||
extensions |= blackfriday.Tables
|
||||
extensions |= blackfriday.FencedCode
|
||||
extensions |= blackfriday.SpaceHeadings
|
||||
extensions |= blackfriday.Footnotes
|
||||
extensions |= blackfriday.Titleblock
|
||||
extensions |= blackfriday.DefinitionLists
|
||||
return &roffRenderer{
|
||||
extensions: extensions,
|
||||
}
|
||||
}
|
||||
|
||||
// GetExtensions returns the list of extensions used by this renderer implementation
|
||||
func (r *roffRenderer) GetExtensions() blackfriday.Extensions {
|
||||
return r.extensions
|
||||
}
|
||||
|
||||
// RenderHeader handles outputting the header at document start
|
||||
func (r *roffRenderer) RenderHeader(w io.Writer, ast *blackfriday.Node) {
|
||||
// disable hyphenation
|
||||
out(w, ".nh\n")
|
||||
}
|
||||
|
||||
// RenderFooter handles outputting the footer at the document end; the roff
|
||||
// renderer has no footer information
|
||||
func (r *roffRenderer) RenderFooter(w io.Writer, ast *blackfriday.Node) {
|
||||
}
|
||||
|
||||
// RenderNode is called for each node in a markdown document; based on the node
|
||||
// type the equivalent roff output is sent to the writer
|
||||
func (r *roffRenderer) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
|
||||
|
||||
var walkAction = blackfriday.GoToNext
|
||||
|
||||
switch node.Type {
|
||||
case blackfriday.Text:
|
||||
escapeSpecialChars(w, node.Literal)
|
||||
case blackfriday.Softbreak:
|
||||
out(w, crTag)
|
||||
case blackfriday.Hardbreak:
|
||||
out(w, breakTag)
|
||||
case blackfriday.Emph:
|
||||
if entering {
|
||||
out(w, emphTag)
|
||||
} else {
|
||||
out(w, emphCloseTag)
|
||||
}
|
||||
case blackfriday.Strong:
|
||||
if entering {
|
||||
out(w, strongTag)
|
||||
} else {
|
||||
out(w, strongCloseTag)
|
||||
}
|
||||
case blackfriday.Link:
|
||||
if !entering {
|
||||
out(w, linkTag+string(node.LinkData.Destination)+linkCloseTag)
|
||||
}
|
||||
case blackfriday.Image:
|
||||
// ignore images
|
||||
walkAction = blackfriday.SkipChildren
|
||||
case blackfriday.Code:
|
||||
out(w, codespanTag)
|
||||
escapeSpecialChars(w, node.Literal)
|
||||
out(w, codespanCloseTag)
|
||||
case blackfriday.Document:
|
||||
break
|
||||
case blackfriday.Paragraph:
|
||||
// roff .PP markers break lists
|
||||
if r.listDepth > 0 {
|
||||
return blackfriday.GoToNext
|
||||
}
|
||||
if entering {
|
||||
out(w, paraTag)
|
||||
} else {
|
||||
out(w, crTag)
|
||||
}
|
||||
case blackfriday.BlockQuote:
|
||||
if entering {
|
||||
out(w, quoteTag)
|
||||
} else {
|
||||
out(w, quoteCloseTag)
|
||||
}
|
||||
case blackfriday.Heading:
|
||||
r.handleHeading(w, node, entering)
|
||||
case blackfriday.HorizontalRule:
|
||||
out(w, hruleTag)
|
||||
case blackfriday.List:
|
||||
r.handleList(w, node, entering)
|
||||
case blackfriday.Item:
|
||||
r.handleItem(w, node, entering)
|
||||
case blackfriday.CodeBlock:
|
||||
out(w, codeTag)
|
||||
escapeSpecialChars(w, node.Literal)
|
||||
out(w, codeCloseTag)
|
||||
case blackfriday.Table:
|
||||
r.handleTable(w, node, entering)
|
||||
case blackfriday.TableHead:
|
||||
case blackfriday.TableBody:
|
||||
case blackfriday.TableRow:
|
||||
// no action as cell entries do all the nroff formatting
|
||||
return blackfriday.GoToNext
|
||||
case blackfriday.TableCell:
|
||||
r.handleTableCell(w, node, entering)
|
||||
case blackfriday.HTMLSpan:
|
||||
// ignore other HTML tags
|
||||
default:
|
||||
fmt.Fprintln(os.Stderr, "WARNING: go-md2man does not handle node type "+node.Type.String())
|
||||
}
|
||||
return walkAction
|
||||
}
|
||||
|
||||
func (r *roffRenderer) handleHeading(w io.Writer, node *blackfriday.Node, entering bool) {
|
||||
if entering {
|
||||
switch node.Level {
|
||||
case 1:
|
||||
if !r.firstHeader {
|
||||
out(w, titleHeader)
|
||||
r.firstHeader = true
|
||||
break
|
||||
}
|
||||
out(w, topLevelHeader)
|
||||
case 2:
|
||||
out(w, secondLevelHdr)
|
||||
default:
|
||||
out(w, otherHeader)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (r *roffRenderer) handleList(w io.Writer, node *blackfriday.Node, entering bool) {
|
||||
openTag := listTag
|
||||
closeTag := listCloseTag
|
||||
if node.ListFlags&blackfriday.ListTypeDefinition != 0 {
|
||||
// tags for definition lists handled within Item node
|
||||
openTag = ""
|
||||
closeTag = ""
|
||||
}
|
||||
if entering {
|
||||
r.listDepth++
|
||||
if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
|
||||
r.listCounters = append(r.listCounters, 1)
|
||||
}
|
||||
out(w, openTag)
|
||||
} else {
|
||||
if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
|
||||
r.listCounters = r.listCounters[:len(r.listCounters)-1]
|
||||
}
|
||||
out(w, closeTag)
|
||||
r.listDepth--
|
||||
}
|
||||
}
|
||||
|
||||
func (r *roffRenderer) handleItem(w io.Writer, node *blackfriday.Node, entering bool) {
|
||||
if entering {
|
||||
if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
|
||||
out(w, fmt.Sprintf(".IP \"%3d.\" 5\n", r.listCounters[len(r.listCounters)-1]))
|
||||
r.listCounters[len(r.listCounters)-1]++
|
||||
} else if node.ListFlags&blackfriday.ListTypeTerm != 0 {
|
||||
// DT (definition term): line just before DD (see below).
|
||||
out(w, dtTag)
|
||||
r.firstDD = true
|
||||
} else if node.ListFlags&blackfriday.ListTypeDefinition != 0 {
|
||||
// DD (definition description): line that starts with ": ".
|
||||
//
|
||||
// We have to distinguish between the first DD and the
|
||||
// subsequent ones, as there should be no vertical
|
||||
// whitespace between the DT and the first DD.
|
||||
if r.firstDD {
|
||||
r.firstDD = false
|
||||
} else {
|
||||
out(w, dd2Tag)
|
||||
}
|
||||
} else {
|
||||
out(w, ".IP \\(bu 2\n")
|
||||
}
|
||||
} else {
|
||||
out(w, "\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (r *roffRenderer) handleTable(w io.Writer, node *blackfriday.Node, entering bool) {
|
||||
if entering {
|
||||
out(w, tableStart)
|
||||
// call walker to count cells (and rows?) so format section can be produced
|
||||
columns := countColumns(node)
|
||||
out(w, strings.Repeat("l ", columns)+"\n")
|
||||
out(w, strings.Repeat("l ", columns)+".\n")
|
||||
} else {
|
||||
out(w, tableEnd)
|
||||
}
|
||||
}
|
||||
|
||||
func (r *roffRenderer) handleTableCell(w io.Writer, node *blackfriday.Node, entering bool) {
|
||||
if entering {
|
||||
var start string
|
||||
if node.Prev != nil && node.Prev.Type == blackfriday.TableCell {
|
||||
start = "\t"
|
||||
}
|
||||
if node.IsHeader {
|
||||
start += codespanTag
|
||||
} else if nodeLiteralSize(node) > 30 {
|
||||
start += tableCellStart
|
||||
}
|
||||
out(w, start)
|
||||
} else {
|
||||
var end string
|
||||
if node.IsHeader {
|
||||
end = codespanCloseTag
|
||||
} else if nodeLiteralSize(node) > 30 {
|
||||
end = tableCellEnd
|
||||
}
|
||||
if node.Next == nil && end != tableCellEnd {
|
||||
// Last cell: need to carriage return if we are at the end of the
|
||||
// header row and content isn't wrapped in a "tablecell"
|
||||
end += crTag
|
||||
}
|
||||
out(w, end)
|
||||
}
|
||||
}
|
||||
|
||||
func nodeLiteralSize(node *blackfriday.Node) int {
|
||||
total := 0
|
||||
for n := node.FirstChild; n != nil; n = n.FirstChild {
|
||||
total += len(n.Literal)
|
||||
}
|
||||
return total
|
||||
}
|
||||
|
||||
// because roff format requires knowing the column count before outputting any table
|
||||
// data we need to walk a table tree and count the columns
|
||||
func countColumns(node *blackfriday.Node) int {
|
||||
var columns int
|
||||
|
||||
node.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
|
||||
switch node.Type {
|
||||
case blackfriday.TableRow:
|
||||
if !entering {
|
||||
return blackfriday.Terminate
|
||||
}
|
||||
case blackfriday.TableCell:
|
||||
if entering {
|
||||
columns++
|
||||
}
|
||||
default:
|
||||
}
|
||||
return blackfriday.GoToNext
|
||||
})
|
||||
return columns
|
||||
}
|
||||
|
||||
func out(w io.Writer, output string) {
|
||||
io.WriteString(w, output) // nolint: errcheck
|
||||
}
|
||||
|
||||
func escapeSpecialChars(w io.Writer, text []byte) {
|
||||
for i := 0; i < len(text); i++ {
|
||||
// escape initial apostrophe or period
|
||||
if len(text) >= 1 && (text[0] == '\'' || text[0] == '.') {
|
||||
out(w, "\\&")
|
||||
}
|
||||
|
||||
// directly copy normal characters
|
||||
org := i
|
||||
|
||||
for i < len(text) && text[i] != '\\' {
|
||||
i++
|
||||
}
|
||||
if i > org {
|
||||
w.Write(text[org:i]) // nolint: errcheck
|
||||
}
|
||||
|
||||
// escape a character
|
||||
if i >= len(text) {
|
||||
break
|
||||
}
|
||||
|
||||
w.Write([]byte{'\\', text[i]}) // nolint: errcheck
|
||||
}
|
||||
}
|
||||
|
|
@ -1,8 +0,0 @@
|
|||
*.out
|
||||
*.swp
|
||||
*.8
|
||||
*.6
|
||||
_obj
|
||||
_test*
|
||||
markdown
|
||||
tags
|
||||
|
|
@ -1,17 +0,0 @@
|
|||
sudo: false
|
||||
language: go
|
||||
go:
|
||||
- "1.10.x"
|
||||
- "1.11.x"
|
||||
- tip
|
||||
matrix:
|
||||
fast_finish: true
|
||||
allow_failures:
|
||||
- go: tip
|
||||
install:
|
||||
- # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
|
||||
script:
|
||||
- go get -t -v ./...
|
||||
- diff -u <(echo -n) <(gofmt -d -s .)
|
||||
- go tool vet .
|
||||
- go test -v ./...
|
||||
|
|
@ -1,29 +0,0 @@
|
|||
Blackfriday is distributed under the Simplified BSD License:
|
||||
|
||||
> Copyright © 2011 Russ Ross
|
||||
> All rights reserved.
|
||||
>
|
||||
> Redistribution and use in source and binary forms, with or without
|
||||
> modification, are permitted provided that the following conditions
|
||||
> are met:
|
||||
>
|
||||
> 1. Redistributions of source code must retain the above copyright
|
||||
> notice, this list of conditions and the following disclaimer.
|
||||
>
|
||||
> 2. Redistributions in binary form must reproduce the above
|
||||
> copyright notice, this list of conditions and the following
|
||||
> disclaimer in the documentation and/or other materials provided with
|
||||
> the distribution.
|
||||
>
|
||||
> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
||||
> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||||
> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||||
> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||||
> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||||
> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
> POSSIBILITY OF SUCH DAMAGE.
|
||||
|
|
@ -1,335 +0,0 @@
|
|||
Blackfriday
|
||||
[![Build Status][BuildV2SVG]][BuildV2URL]
|
||||
[![PkgGoDev][PkgGoDevV2SVG]][PkgGoDevV2URL]
|
||||
===========
|
||||
|
||||
Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
|
||||
is paranoid about its input (so you can safely feed it user-supplied
|
||||
data), it is fast, it supports common extensions (tables, smart
|
||||
punctuation substitutions, etc.), and it is safe for all utf-8
|
||||
(unicode) input.
|
||||
|
||||
HTML output is currently supported, along with Smartypants
|
||||
extensions.
|
||||
|
||||
It started as a translation from C of [Sundown][3].
|
||||
|
||||
|
||||
Installation
|
||||
------------
|
||||
|
||||
Blackfriday is compatible with modern Go releases in module mode.
|
||||
With Go installed:
|
||||
|
||||
go get github.com/russross/blackfriday/v2
|
||||
|
||||
will resolve and add the package to the current development module,
|
||||
then build and install it. Alternatively, you can achieve the same
|
||||
if you import it in a package:
|
||||
|
||||
import "github.com/russross/blackfriday/v2"
|
||||
|
||||
and `go get` without parameters.
|
||||
|
||||
Legacy GOPATH mode is unsupported.
|
||||
|
||||
|
||||
Versions
|
||||
--------
|
||||
|
||||
Currently maintained and recommended version of Blackfriday is `v2`. It's being
|
||||
developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the
|
||||
documentation is available at
|
||||
https://pkg.go.dev/github.com/russross/blackfriday/v2.
|
||||
|
||||
It is `go get`-able in module mode at `github.com/russross/blackfriday/v2`.
|
||||
|
||||
Version 2 offers a number of improvements over v1:
|
||||
|
||||
* Cleaned up API
|
||||
* A separate call to [`Parse`][4], which produces an abstract syntax tree for
|
||||
the document
|
||||
* Latest bug fixes
|
||||
* Flexibility to easily add your own rendering extensions
|
||||
|
||||
Potential drawbacks:
|
||||
|
||||
* Our benchmarks show v2 to be slightly slower than v1. Currently in the
|
||||
ballpark of around 15%.
|
||||
* API breakage. If you can't afford modifying your code to adhere to the new API
|
||||
and don't care too much about the new features, v2 is probably not for you.
|
||||
* Several bug fixes are trailing behind and still need to be forward-ported to
|
||||
v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
|
||||
tracking.
|
||||
|
||||
If you are still interested in the legacy `v1`, you can import it from
|
||||
`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
|
||||
here: https://pkg.go.dev/github.com/russross/blackfriday.
|
||||
|
||||
|
||||
Usage
|
||||
-----
|
||||
|
||||
For the most sensible markdown processing, it is as simple as getting your input
|
||||
into a byte slice and calling:
|
||||
|
||||
```go
|
||||
output := blackfriday.Run(input)
|
||||
```
|
||||
|
||||
Your input will be parsed and the output rendered with a set of most popular
|
||||
extensions enabled. If you want the most basic feature set, corresponding with
|
||||
the bare Markdown specification, use:
|
||||
|
||||
```go
|
||||
output := blackfriday.Run(input, blackfriday.WithNoExtensions())
|
||||
```
|
||||
|
||||
### Sanitize untrusted content
|
||||
|
||||
Blackfriday itself does nothing to protect against malicious content. If you are
|
||||
dealing with user-supplied markdown, we recommend running Blackfriday's output
|
||||
through HTML sanitizer such as [Bluemonday][5].
|
||||
|
||||
Here's an example of simple usage of Blackfriday together with Bluemonday:
|
||||
|
||||
```go
|
||||
import (
|
||||
"github.com/microcosm-cc/bluemonday"
|
||||
"github.com/russross/blackfriday/v2"
|
||||
)
|
||||
|
||||
// ...
|
||||
unsafe := blackfriday.Run(input)
|
||||
html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
|
||||
```
|
||||
|
||||
### Custom options
|
||||
|
||||
If you want to customize the set of options, use `blackfriday.WithExtensions`,
|
||||
`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
|
||||
|
||||
### `blackfriday-tool`
|
||||
|
||||
You can also check out `blackfriday-tool` for a more complete example
|
||||
of how to use it. Download and install it using:
|
||||
|
||||
go get github.com/russross/blackfriday-tool
|
||||
|
||||
This is a simple command-line tool that allows you to process a
|
||||
markdown file using a standalone program. You can also browse the
|
||||
source directly on github if you are just looking for some example
|
||||
code:
|
||||
|
||||
* <https://github.com/russross/blackfriday-tool>
|
||||
|
||||
Note that if you have not already done so, installing
|
||||
`blackfriday-tool` will be sufficient to download and install
|
||||
blackfriday in addition to the tool itself. The tool binary will be
|
||||
installed in `$GOPATH/bin`. This is a statically-linked binary that
|
||||
can be copied to wherever you need it without worrying about
|
||||
dependencies and library versions.
|
||||
|
||||
### Sanitized anchor names
|
||||
|
||||
Blackfriday includes an algorithm for creating sanitized anchor names
|
||||
corresponding to a given input text. This algorithm is used to create
|
||||
anchors for headings when `AutoHeadingIDs` extension is enabled. The
|
||||
algorithm has a specification, so that other packages can create
|
||||
compatible anchor names and links to those anchors.
|
||||
|
||||
The specification is located at https://pkg.go.dev/github.com/russross/blackfriday/v2#hdr-Sanitized_Anchor_Names.
|
||||
|
||||
[`SanitizedAnchorName`](https://pkg.go.dev/github.com/russross/blackfriday/v2#SanitizedAnchorName) exposes this functionality, and can be used to
|
||||
create compatible links to the anchor names generated by blackfriday.
|
||||
This algorithm is also implemented in a small standalone package at
|
||||
[`github.com/shurcooL/sanitized_anchor_name`](https://pkg.go.dev/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
|
||||
that want a small package and don't need full functionality of blackfriday.
|
||||
|
||||
|
||||
Features
|
||||
--------
|
||||
|
||||
All features of Sundown are supported, including:
|
||||
|
||||
* **Compatibility**. The Markdown v1.0.3 test suite passes with
|
||||
the `--tidy` option. Without `--tidy`, the differences are
|
||||
mostly in whitespace and entity escaping, where blackfriday is
|
||||
more consistent and cleaner.
|
||||
|
||||
* **Common extensions**, including table support, fenced code
|
||||
blocks, autolinks, strikethroughs, non-strict emphasis, etc.
|
||||
|
||||
* **Safety**. Blackfriday is paranoid when parsing, making it safe
|
||||
to feed untrusted user input without fear of bad things
|
||||
happening. The test suite stress tests this and there are no
|
||||
known inputs that make it crash. If you find one, please let me
|
||||
know and send me the input that does it.
|
||||
|
||||
NOTE: "safety" in this context means *runtime safety only*. In order to
|
||||
protect yourself against JavaScript injection in untrusted content, see
|
||||
[this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
|
||||
|
||||
* **Fast processing**. It is fast enough to render on-demand in
|
||||
most web applications without having to cache the output.
|
||||
|
||||
* **Thread safety**. You can run multiple parsers in different
|
||||
goroutines without ill effect. There is no dependence on global
|
||||
shared state.
|
||||
|
||||
* **Minimal dependencies**. Blackfriday only depends on standard
|
||||
library packages in Go. The source code is pretty
|
||||
self-contained, so it is easy to add to any project, including
|
||||
Google App Engine projects.
|
||||
|
||||
* **Standards compliant**. Output successfully validates using the
|
||||
W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
|
||||
|
||||
|
||||
Extensions
|
||||
----------
|
||||
|
||||
In addition to the standard markdown syntax, this package
|
||||
implements the following extensions:
|
||||
|
||||
* **Intra-word emphasis supression**. The `_` character is
|
||||
commonly used inside words when discussing code, so having
|
||||
markdown interpret it as an emphasis command is usually the
|
||||
wrong thing. Blackfriday lets you treat all emphasis markers as
|
||||
normal characters when they occur inside a word.
|
||||
|
||||
* **Tables**. Tables can be created by drawing them in the input
|
||||
using a simple syntax:
|
||||
|
||||
```
|
||||
Name | Age
|
||||
--------|------
|
||||
Bob | 27
|
||||
Alice | 23
|
||||
```
|
||||
|
||||
* **Fenced code blocks**. In addition to the normal 4-space
|
||||
indentation to mark code blocks, you can explicitly mark them
|
||||
and supply a language (to make syntax highlighting simple). Just
|
||||
mark it like this:
|
||||
|
||||
```go
|
||||
func getTrue() bool {
|
||||
return true
|
||||
}
|
||||
```
|
||||
|
||||
You can use 3 or more backticks to mark the beginning of the
|
||||
block, and the same number to mark the end of the block.
|
||||
|
||||
To preserve classes of fenced code blocks while using the bluemonday
|
||||
HTML sanitizer, use the following policy:
|
||||
|
||||
```go
|
||||
p := bluemonday.UGCPolicy()
|
||||
p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
|
||||
html := p.SanitizeBytes(unsafe)
|
||||
```
|
||||
|
||||
* **Definition lists**. A simple definition list is made of a single-line
|
||||
term followed by a colon and the definition for that term.
|
||||
|
||||
Cat
|
||||
: Fluffy animal everyone likes
|
||||
|
||||
Internet
|
||||
: Vector of transmission for pictures of cats
|
||||
|
||||
Terms must be separated from the previous definition by a blank line.
|
||||
|
||||
* **Footnotes**. A marker in the text that will become a superscript number;
|
||||
a footnote definition that will be placed in a list of footnotes at the
|
||||
end of the document. A footnote looks like this:
|
||||
|
||||
This is a footnote.[^1]
|
||||
|
||||
[^1]: the footnote text.
|
||||
|
||||
* **Autolinking**. Blackfriday can find URLs that have not been
|
||||
explicitly marked as links and turn them into links.
|
||||
|
||||
* **Strikethrough**. Use two tildes (`~~`) to mark text that
|
||||
should be crossed out.
|
||||
|
||||
* **Hard line breaks**. With this extension enabled newlines in the input
|
||||
translate into line breaks in the output. This extension is off by default.
|
||||
|
||||
* **Smart quotes**. Smartypants-style punctuation substitution is
|
||||
supported, turning normal double- and single-quote marks into
|
||||
curly quotes, etc.
|
||||
|
||||
* **LaTeX-style dash parsing** is an additional option, where `--`
|
||||
is translated into `–`, and `---` is translated into
|
||||
`—`. This differs from most smartypants processors, which
|
||||
turn a single hyphen into an ndash and a double hyphen into an
|
||||
mdash.
|
||||
|
||||
* **Smart fractions**, where anything that looks like a fraction
|
||||
is translated into suitable HTML (instead of just a few special
|
||||
cases like most smartypant processors). For example, `4/5`
|
||||
becomes `<sup>4</sup>⁄<sub>5</sub>`, which renders as
|
||||
<sup>4</sup>⁄<sub>5</sub>.
|
||||
|
||||
|
||||
Other renderers
|
||||
---------------
|
||||
|
||||
Blackfriday is structured to allow alternative rendering engines. Here
|
||||
are a few of note:
|
||||
|
||||
* [github_flavored_markdown](https://pkg.go.dev/github.com/shurcooL/github_flavored_markdown):
|
||||
provides a GitHub Flavored Markdown renderer with fenced code block
|
||||
highlighting, clickable heading anchor links.
|
||||
|
||||
It's not customizable, and its goal is to produce HTML output
|
||||
equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
|
||||
except the rendering is performed locally.
|
||||
|
||||
* [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
|
||||
but for markdown.
|
||||
|
||||
* [LaTeX output](https://gitlab.com/ambrevar/blackfriday-latex):
|
||||
renders output as LaTeX.
|
||||
|
||||
* [bfchroma](https://github.com/Depado/bfchroma/): provides convenience
|
||||
integration with the [Chroma](https://github.com/alecthomas/chroma) code
|
||||
highlighting library. bfchroma is only compatible with v2 of Blackfriday and
|
||||
provides a drop-in renderer ready to use with Blackfriday, as well as
|
||||
options and means for further customization.
|
||||
|
||||
* [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer.
|
||||
|
||||
* [Blackfriday-Slack](https://github.com/karriereat/blackfriday-slack): converts markdown to slack message style
|
||||
|
||||
|
||||
TODO
|
||||
----
|
||||
|
||||
* More unit testing
|
||||
* Improve Unicode support. It does not understand all Unicode
|
||||
rules (about what constitutes a letter, a punctuation symbol,
|
||||
etc.), so it may fail to detect word boundaries correctly in
|
||||
some instances. It is safe on all UTF-8 input.
|
||||
|
||||
|
||||
License
|
||||
-------
|
||||
|
||||
[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
|
||||
|
||||
|
||||
[1]: https://daringfireball.net/projects/markdown/ "Markdown"
|
||||
[2]: https://golang.org/ "Go Language"
|
||||
[3]: https://github.com/vmg/sundown "Sundown"
|
||||
[4]: https://pkg.go.dev/github.com/russross/blackfriday/v2#Parse "Parse func"
|
||||
[5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
|
||||
|
||||
[BuildV2SVG]: https://travis-ci.org/russross/blackfriday.svg?branch=v2
|
||||
[BuildV2URL]: https://travis-ci.org/russross/blackfriday
|
||||
[PkgGoDevV2SVG]: https://pkg.go.dev/badge/github.com/russross/blackfriday/v2
|
||||
[PkgGoDevV2URL]: https://pkg.go.dev/github.com/russross/blackfriday/v2
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,46 +0,0 @@
|
|||
// Package blackfriday is a markdown processor.
|
||||
//
|
||||
// It translates plain text with simple formatting rules into an AST, which can
|
||||
// then be further processed to HTML (provided by Blackfriday itself) or other
|
||||
// formats (provided by the community).
|
||||
//
|
||||
// The simplest way to invoke Blackfriday is to call the Run function. It will
|
||||
// take a text input and produce a text output in HTML (or other format).
|
||||
//
|
||||
// A slightly more sophisticated way to use Blackfriday is to create a Markdown
|
||||
// processor and to call Parse, which returns a syntax tree for the input
|
||||
// document. You can leverage Blackfriday's parsing for content extraction from
|
||||
// markdown documents. You can assign a custom renderer and set various options
|
||||
// to the Markdown processor.
|
||||
//
|
||||
// If you're interested in calling Blackfriday from command line, see
|
||||
// https://github.com/russross/blackfriday-tool.
|
||||
//
|
||||
// Sanitized Anchor Names
|
||||
//
|
||||
// Blackfriday includes an algorithm for creating sanitized anchor names
|
||||
// corresponding to a given input text. This algorithm is used to create
|
||||
// anchors for headings when AutoHeadingIDs extension is enabled. The
|
||||
// algorithm is specified below, so that other packages can create
|
||||
// compatible anchor names and links to those anchors.
|
||||
//
|
||||
// The algorithm iterates over the input text, interpreted as UTF-8,
|
||||
// one Unicode code point (rune) at a time. All runes that are letters (category L)
|
||||
// or numbers (category N) are considered valid characters. They are mapped to
|
||||
// lower case, and included in the output. All other runes are considered
|
||||
// invalid characters. Invalid characters that precede the first valid character,
|
||||
// as well as invalid character that follow the last valid character
|
||||
// are dropped completely. All other sequences of invalid characters
|
||||
// between two valid characters are replaced with a single dash character '-'.
|
||||
//
|
||||
// SanitizedAnchorName exposes this functionality, and can be used to
|
||||
// create compatible links to the anchor names generated by blackfriday.
|
||||
// This algorithm is also implemented in a small standalone package at
|
||||
// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
|
||||
// that want a small package and don't need full functionality of blackfriday.
|
||||
package blackfriday
|
||||
|
||||
// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
|
||||
// github.com/shurcooL/sanitized_anchor_name.
|
||||
// Otherwise, users of sanitized_anchor_name will get anchor names
|
||||
// that are incompatible with those generated by blackfriday.
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,70 +0,0 @@
|
|||
package blackfriday
|
||||
|
||||
import (
|
||||
"html"
|
||||
"io"
|
||||
)
|
||||
|
||||
var htmlEscaper = [256][]byte{
|
||||
'&': []byte("&"),
|
||||
'<': []byte("<"),
|
||||
'>': []byte(">"),
|
||||
'"': []byte("""),
|
||||
}
|
||||
|
||||
func escapeHTML(w io.Writer, s []byte) {
|
||||
escapeEntities(w, s, false)
|
||||
}
|
||||
|
||||
func escapeAllHTML(w io.Writer, s []byte) {
|
||||
escapeEntities(w, s, true)
|
||||
}
|
||||
|
||||
func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) {
|
||||
var start, end int
|
||||
for end < len(s) {
|
||||
escSeq := htmlEscaper[s[end]]
|
||||
if escSeq != nil {
|
||||
isEntity, entityEnd := nodeIsEntity(s, end)
|
||||
if isEntity && !escapeValidEntities {
|
||||
w.Write(s[start : entityEnd+1])
|
||||
start = entityEnd + 1
|
||||
} else {
|
||||
w.Write(s[start:end])
|
||||
w.Write(escSeq)
|
||||
start = end + 1
|
||||
}
|
||||
}
|
||||
end++
|
||||
}
|
||||
if start < len(s) && end <= len(s) {
|
||||
w.Write(s[start:end])
|
||||
}
|
||||
}
|
||||
|
||||
func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) {
|
||||
isEntity = false
|
||||
endEntityPos = end + 1
|
||||
|
||||
if s[end] == '&' {
|
||||
for endEntityPos < len(s) {
|
||||
if s[endEntityPos] == ';' {
|
||||
if entities[string(s[end:endEntityPos+1])] {
|
||||
isEntity = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' {
|
||||
break
|
||||
}
|
||||
endEntityPos++
|
||||
}
|
||||
}
|
||||
|
||||
return isEntity, endEntityPos
|
||||
}
|
||||
|
||||
func escLink(w io.Writer, text []byte) {
|
||||
unesc := html.UnescapeString(string(text))
|
||||
escapeHTML(w, []byte(unesc))
|
||||
}
|
||||
|
|
@ -1 +0,0 @@
|
|||
module github.com/russross/blackfriday/v2
|
||||
|
|
@ -1,952 +0,0 @@
|
|||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// HTML rendering backend
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"regexp"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// HTMLFlags control optional behavior of HTML renderer.
|
||||
type HTMLFlags int
|
||||
|
||||
// HTML renderer configuration options.
|
||||
const (
|
||||
HTMLFlagsNone HTMLFlags = 0
|
||||
SkipHTML HTMLFlags = 1 << iota // Skip preformatted HTML blocks
|
||||
SkipImages // Skip embedded images
|
||||
SkipLinks // Skip all links
|
||||
Safelink // Only link to trusted protocols
|
||||
NofollowLinks // Only link with rel="nofollow"
|
||||
NoreferrerLinks // Only link with rel="noreferrer"
|
||||
NoopenerLinks // Only link with rel="noopener"
|
||||
HrefTargetBlank // Add a blank target
|
||||
CompletePage // Generate a complete HTML page
|
||||
UseXHTML // Generate XHTML output instead of HTML
|
||||
FootnoteReturnLinks // Generate a link at the end of a footnote to return to the source
|
||||
Smartypants // Enable smart punctuation substitutions
|
||||
SmartypantsFractions // Enable smart fractions (with Smartypants)
|
||||
SmartypantsDashes // Enable smart dashes (with Smartypants)
|
||||
SmartypantsLatexDashes // Enable LaTeX-style dashes (with Smartypants)
|
||||
SmartypantsAngledQuotes // Enable angled double quotes (with Smartypants) for double quotes rendering
|
||||
SmartypantsQuotesNBSP // Enable « French guillemets » (with Smartypants)
|
||||
TOC // Generate a table of contents
|
||||
)
|
||||
|
||||
var (
|
||||
htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag)
|
||||
)
|
||||
|
||||
const (
|
||||
htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" +
|
||||
processingInstruction + "|" + declaration + "|" + cdata + ")"
|
||||
closeTag = "</" + tagName + "\\s*[>]"
|
||||
openTag = "<" + tagName + attribute + "*" + "\\s*/?>"
|
||||
attribute = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)"
|
||||
attributeValue = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")"
|
||||
attributeValueSpec = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")"
|
||||
attributeName = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
|
||||
cdata = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
|
||||
declaration = "<![A-Z]+" + "\\s+[^>]*>"
|
||||
doubleQuotedValue = "\"[^\"]*\""
|
||||
htmlComment = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
|
||||
processingInstruction = "[<][?].*?[?][>]"
|
||||
singleQuotedValue = "'[^']*'"
|
||||
tagName = "[A-Za-z][A-Za-z0-9-]*"
|
||||
unquotedValue = "[^\"'=<>`\\x00-\\x20]+"
|
||||
)
|
||||
|
||||
// HTMLRendererParameters is a collection of supplementary parameters tweaking
|
||||
// the behavior of various parts of HTML renderer.
|
||||
type HTMLRendererParameters struct {
|
||||
// Prepend this text to each relative URL.
|
||||
AbsolutePrefix string
|
||||
// Add this text to each footnote anchor, to ensure uniqueness.
|
||||
FootnoteAnchorPrefix string
|
||||
// Show this text inside the <a> tag for a footnote return link, if the
|
||||
// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
|
||||
// <sup>[return]</sup> is used.
|
||||
FootnoteReturnLinkContents string
|
||||
// If set, add this text to the front of each Heading ID, to ensure
|
||||
// uniqueness.
|
||||
HeadingIDPrefix string
|
||||
// If set, add this text to the back of each Heading ID, to ensure uniqueness.
|
||||
HeadingIDSuffix string
|
||||
// Increase heading levels: if the offset is 1, <h1> becomes <h2> etc.
|
||||
// Negative offset is also valid.
|
||||
// Resulting levels are clipped between 1 and 6.
|
||||
HeadingLevelOffset int
|
||||
|
||||
Title string // Document title (used if CompletePage is set)
|
||||
CSS string // Optional CSS file URL (used if CompletePage is set)
|
||||
Icon string // Optional icon file URL (used if CompletePage is set)
|
||||
|
||||
Flags HTMLFlags // Flags allow customizing this renderer's behavior
|
||||
}
|
||||
|
||||
// HTMLRenderer is a type that implements the Renderer interface for HTML output.
|
||||
//
|
||||
// Do not create this directly, instead use the NewHTMLRenderer function.
|
||||
type HTMLRenderer struct {
|
||||
HTMLRendererParameters
|
||||
|
||||
closeTag string // how to end singleton tags: either " />" or ">"
|
||||
|
||||
// Track heading IDs to prevent ID collision in a single generation.
|
||||
headingIDs map[string]int
|
||||
|
||||
lastOutputLen int
|
||||
disableTags int
|
||||
|
||||
sr *SPRenderer
|
||||
}
|
||||
|
||||
const (
|
||||
xhtmlClose = " />"
|
||||
htmlClose = ">"
|
||||
)
|
||||
|
||||
// NewHTMLRenderer creates and configures an HTMLRenderer object, which
|
||||
// satisfies the Renderer interface.
|
||||
func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
|
||||
// configure the rendering engine
|
||||
closeTag := htmlClose
|
||||
if params.Flags&UseXHTML != 0 {
|
||||
closeTag = xhtmlClose
|
||||
}
|
||||
|
||||
if params.FootnoteReturnLinkContents == "" {
|
||||
// U+FE0E is VARIATION SELECTOR-15.
|
||||
// It suppresses automatic emoji presentation of the preceding
|
||||
// U+21A9 LEFTWARDS ARROW WITH HOOK on iOS and iPadOS.
|
||||
params.FootnoteReturnLinkContents = "<span aria-label='Return'>↩\ufe0e</span>"
|
||||
}
|
||||
|
||||
return &HTMLRenderer{
|
||||
HTMLRendererParameters: params,
|
||||
|
||||
closeTag: closeTag,
|
||||
headingIDs: make(map[string]int),
|
||||
|
||||
sr: NewSmartypantsRenderer(params.Flags),
|
||||
}
|
||||
}
|
||||
|
||||
func isHTMLTag(tag []byte, tagname string) bool {
|
||||
found, _ := findHTMLTagPos(tag, tagname)
|
||||
return found
|
||||
}
|
||||
|
||||
// Look for a character, but ignore it when it's in any kind of quotes, it
|
||||
// might be JavaScript
|
||||
func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
|
||||
inSingleQuote := false
|
||||
inDoubleQuote := false
|
||||
inGraveQuote := false
|
||||
i := start
|
||||
for i < len(html) {
|
||||
switch {
|
||||
case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
|
||||
return i
|
||||
case html[i] == '\'':
|
||||
inSingleQuote = !inSingleQuote
|
||||
case html[i] == '"':
|
||||
inDoubleQuote = !inDoubleQuote
|
||||
case html[i] == '`':
|
||||
inGraveQuote = !inGraveQuote
|
||||
}
|
||||
i++
|
||||
}
|
||||
return start
|
||||
}
|
||||
|
||||
func findHTMLTagPos(tag []byte, tagname string) (bool, int) {
|
||||
i := 0
|
||||
if i < len(tag) && tag[0] != '<' {
|
||||
return false, -1
|
||||
}
|
||||
i++
|
||||
i = skipSpace(tag, i)
|
||||
|
||||
if i < len(tag) && tag[i] == '/' {
|
||||
i++
|
||||
}
|
||||
|
||||
i = skipSpace(tag, i)
|
||||
j := 0
|
||||
for ; i < len(tag); i, j = i+1, j+1 {
|
||||
if j >= len(tagname) {
|
||||
break
|
||||
}
|
||||
|
||||
if strings.ToLower(string(tag[i]))[0] != tagname[j] {
|
||||
return false, -1
|
||||
}
|
||||
}
|
||||
|
||||
if i == len(tag) {
|
||||
return false, -1
|
||||
}
|
||||
|
||||
rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
|
||||
if rightAngle >= i {
|
||||
return true, rightAngle
|
||||
}
|
||||
|
||||
return false, -1
|
||||
}
|
||||
|
||||
func skipSpace(tag []byte, i int) int {
|
||||
for i < len(tag) && isspace(tag[i]) {
|
||||
i++
|
||||
}
|
||||
return i
|
||||
}
|
||||
|
||||
func isRelativeLink(link []byte) (yes bool) {
|
||||
// a tag begin with '#'
|
||||
if link[0] == '#' {
|
||||
return true
|
||||
}
|
||||
|
||||
// link begin with '/' but not '//', the second maybe a protocol relative link
|
||||
if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// only the root '/'
|
||||
if len(link) == 1 && link[0] == '/' {
|
||||
return true
|
||||
}
|
||||
|
||||
// current directory : begin with "./"
|
||||
if bytes.HasPrefix(link, []byte("./")) {
|
||||
return true
|
||||
}
|
||||
|
||||
// parent directory : begin with "../"
|
||||
if bytes.HasPrefix(link, []byte("../")) {
|
||||
return true
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string {
|
||||
for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] {
|
||||
tmp := fmt.Sprintf("%s-%d", id, count+1)
|
||||
|
||||
if _, tmpFound := r.headingIDs[tmp]; !tmpFound {
|
||||
r.headingIDs[id] = count + 1
|
||||
id = tmp
|
||||
} else {
|
||||
id = id + "-1"
|
||||
}
|
||||
}
|
||||
|
||||
if _, found := r.headingIDs[id]; !found {
|
||||
r.headingIDs[id] = 0
|
||||
}
|
||||
|
||||
return id
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte {
|
||||
if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
|
||||
newDest := r.AbsolutePrefix
|
||||
if link[0] != '/' {
|
||||
newDest += "/"
|
||||
}
|
||||
newDest += string(link)
|
||||
return []byte(newDest)
|
||||
}
|
||||
return link
|
||||
}
|
||||
|
||||
func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string {
|
||||
if isRelativeLink(link) {
|
||||
return attrs
|
||||
}
|
||||
val := []string{}
|
||||
if flags&NofollowLinks != 0 {
|
||||
val = append(val, "nofollow")
|
||||
}
|
||||
if flags&NoreferrerLinks != 0 {
|
||||
val = append(val, "noreferrer")
|
||||
}
|
||||
if flags&NoopenerLinks != 0 {
|
||||
val = append(val, "noopener")
|
||||
}
|
||||
if flags&HrefTargetBlank != 0 {
|
||||
attrs = append(attrs, "target=\"_blank\"")
|
||||
}
|
||||
if len(val) == 0 {
|
||||
return attrs
|
||||
}
|
||||
attr := fmt.Sprintf("rel=%q", strings.Join(val, " "))
|
||||
return append(attrs, attr)
|
||||
}
|
||||
|
||||
func isMailto(link []byte) bool {
|
||||
return bytes.HasPrefix(link, []byte("mailto:"))
|
||||
}
|
||||
|
||||
func needSkipLink(flags HTMLFlags, dest []byte) bool {
|
||||
if flags&SkipLinks != 0 {
|
||||
return true
|
||||
}
|
||||
return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest)
|
||||
}
|
||||
|
||||
func isSmartypantable(node *Node) bool {
|
||||
pt := node.Parent.Type
|
||||
return pt != Link && pt != CodeBlock && pt != Code
|
||||
}
|
||||
|
||||
func appendLanguageAttr(attrs []string, info []byte) []string {
|
||||
if len(info) == 0 {
|
||||
return attrs
|
||||
}
|
||||
endOfLang := bytes.IndexAny(info, "\t ")
|
||||
if endOfLang < 0 {
|
||||
endOfLang = len(info)
|
||||
}
|
||||
return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {
|
||||
w.Write(name)
|
||||
if len(attrs) > 0 {
|
||||
w.Write(spaceBytes)
|
||||
w.Write([]byte(strings.Join(attrs, " ")))
|
||||
}
|
||||
w.Write(gtBytes)
|
||||
r.lastOutputLen = 1
|
||||
}
|
||||
|
||||
func footnoteRef(prefix string, node *Node) []byte {
|
||||
urlFrag := prefix + string(slugify(node.Destination))
|
||||
anchor := fmt.Sprintf(`<a href="#fn:%s">%d</a>`, urlFrag, node.NoteID)
|
||||
return []byte(fmt.Sprintf(`<sup class="footnote-ref" id="fnref:%s">%s</sup>`, urlFrag, anchor))
|
||||
}
|
||||
|
||||
func footnoteItem(prefix string, slug []byte) []byte {
|
||||
return []byte(fmt.Sprintf(`<li id="fn:%s%s">`, prefix, slug))
|
||||
}
|
||||
|
||||
func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte {
|
||||
const format = ` <a class="footnote-return" href="#fnref:%s%s">%s</a>`
|
||||
return []byte(fmt.Sprintf(format, prefix, slug, returnLink))
|
||||
}
|
||||
|
||||
func itemOpenCR(node *Node) bool {
|
||||
if node.Prev == nil {
|
||||
return false
|
||||
}
|
||||
ld := node.Parent.ListData
|
||||
return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0
|
||||
}
|
||||
|
||||
func skipParagraphTags(node *Node) bool {
|
||||
grandparent := node.Parent.Parent
|
||||
if grandparent == nil || grandparent.Type != List {
|
||||
return false
|
||||
}
|
||||
tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0
|
||||
return grandparent.Type == List && tightOrTerm
|
||||
}
|
||||
|
||||
func cellAlignment(align CellAlignFlags) string {
|
||||
switch align {
|
||||
case TableAlignmentLeft:
|
||||
return "left"
|
||||
case TableAlignmentRight:
|
||||
return "right"
|
||||
case TableAlignmentCenter:
|
||||
return "center"
|
||||
default:
|
||||
return ""
|
||||
}
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) out(w io.Writer, text []byte) {
|
||||
if r.disableTags > 0 {
|
||||
w.Write(htmlTagRe.ReplaceAll(text, []byte{}))
|
||||
} else {
|
||||
w.Write(text)
|
||||
}
|
||||
r.lastOutputLen = len(text)
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) cr(w io.Writer) {
|
||||
if r.lastOutputLen > 0 {
|
||||
r.out(w, nlBytes)
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
nlBytes = []byte{'\n'}
|
||||
gtBytes = []byte{'>'}
|
||||
spaceBytes = []byte{' '}
|
||||
)
|
||||
|
||||
var (
|
||||
brTag = []byte("<br>")
|
||||
brXHTMLTag = []byte("<br />")
|
||||
emTag = []byte("<em>")
|
||||
emCloseTag = []byte("</em>")
|
||||
strongTag = []byte("<strong>")
|
||||
strongCloseTag = []byte("</strong>")
|
||||
delTag = []byte("<del>")
|
||||
delCloseTag = []byte("</del>")
|
||||
ttTag = []byte("<tt>")
|
||||
ttCloseTag = []byte("</tt>")
|
||||
aTag = []byte("<a")
|
||||
aCloseTag = []byte("</a>")
|
||||
preTag = []byte("<pre>")
|
||||
preCloseTag = []byte("</pre>")
|
||||
codeTag = []byte("<code>")
|
||||
codeCloseTag = []byte("</code>")
|
||||
pTag = []byte("<p>")
|
||||
pCloseTag = []byte("</p>")
|
||||
blockquoteTag = []byte("<blockquote>")
|
||||
blockquoteCloseTag = []byte("</blockquote>")
|
||||
hrTag = []byte("<hr>")
|
||||
hrXHTMLTag = []byte("<hr />")
|
||||
ulTag = []byte("<ul>")
|
||||
ulCloseTag = []byte("</ul>")
|
||||
olTag = []byte("<ol>")
|
||||
olCloseTag = []byte("</ol>")
|
||||
dlTag = []byte("<dl>")
|
||||
dlCloseTag = []byte("</dl>")
|
||||
liTag = []byte("<li>")
|
||||
liCloseTag = []byte("</li>")
|
||||
ddTag = []byte("<dd>")
|
||||
ddCloseTag = []byte("</dd>")
|
||||
dtTag = []byte("<dt>")
|
||||
dtCloseTag = []byte("</dt>")
|
||||
tableTag = []byte("<table>")
|
||||
tableCloseTag = []byte("</table>")
|
||||
tdTag = []byte("<td")
|
||||
tdCloseTag = []byte("</td>")
|
||||
thTag = []byte("<th")
|
||||
thCloseTag = []byte("</th>")
|
||||
theadTag = []byte("<thead>")
|
||||
theadCloseTag = []byte("</thead>")
|
||||
tbodyTag = []byte("<tbody>")
|
||||
tbodyCloseTag = []byte("</tbody>")
|
||||
trTag = []byte("<tr>")
|
||||
trCloseTag = []byte("</tr>")
|
||||
h1Tag = []byte("<h1")
|
||||
h1CloseTag = []byte("</h1>")
|
||||
h2Tag = []byte("<h2")
|
||||
h2CloseTag = []byte("</h2>")
|
||||
h3Tag = []byte("<h3")
|
||||
h3CloseTag = []byte("</h3>")
|
||||
h4Tag = []byte("<h4")
|
||||
h4CloseTag = []byte("</h4>")
|
||||
h5Tag = []byte("<h5")
|
||||
h5CloseTag = []byte("</h5>")
|
||||
h6Tag = []byte("<h6")
|
||||
h6CloseTag = []byte("</h6>")
|
||||
|
||||
footnotesDivBytes = []byte("\n<div class=\"footnotes\">\n\n")
|
||||
footnotesCloseDivBytes = []byte("\n</div>\n")
|
||||
)
|
||||
|
||||
func headingTagsFromLevel(level int) ([]byte, []byte) {
|
||||
if level <= 1 {
|
||||
return h1Tag, h1CloseTag
|
||||
}
|
||||
switch level {
|
||||
case 2:
|
||||
return h2Tag, h2CloseTag
|
||||
case 3:
|
||||
return h3Tag, h3CloseTag
|
||||
case 4:
|
||||
return h4Tag, h4CloseTag
|
||||
case 5:
|
||||
return h5Tag, h5CloseTag
|
||||
}
|
||||
return h6Tag, h6CloseTag
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) outHRTag(w io.Writer) {
|
||||
if r.Flags&UseXHTML == 0 {
|
||||
r.out(w, hrTag)
|
||||
} else {
|
||||
r.out(w, hrXHTMLTag)
|
||||
}
|
||||
}
|
||||
|
||||
// RenderNode is a default renderer of a single node of a syntax tree. For
|
||||
// block nodes it will be called twice: first time with entering=true, second
|
||||
// time with entering=false, so that it could know when it's working on an open
|
||||
// tag and when on close. It writes the result to w.
|
||||
//
|
||||
// The return value is a way to tell the calling walker to adjust its walk
|
||||
// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
|
||||
// can ask the walker to skip a subtree of this node by returning SkipChildren.
|
||||
// The typical behavior is to return GoToNext, which asks for the usual
|
||||
// traversal to the next node.
|
||||
func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
|
||||
attrs := []string{}
|
||||
switch node.Type {
|
||||
case Text:
|
||||
if r.Flags&Smartypants != 0 {
|
||||
var tmp bytes.Buffer
|
||||
escapeHTML(&tmp, node.Literal)
|
||||
r.sr.Process(w, tmp.Bytes())
|
||||
} else {
|
||||
if node.Parent.Type == Link {
|
||||
escLink(w, node.Literal)
|
||||
} else {
|
||||
escapeHTML(w, node.Literal)
|
||||
}
|
||||
}
|
||||
case Softbreak:
|
||||
r.cr(w)
|
||||
// TODO: make it configurable via out(renderer.softbreak)
|
||||
case Hardbreak:
|
||||
if r.Flags&UseXHTML == 0 {
|
||||
r.out(w, brTag)
|
||||
} else {
|
||||
r.out(w, brXHTMLTag)
|
||||
}
|
||||
r.cr(w)
|
||||
case Emph:
|
||||
if entering {
|
||||
r.out(w, emTag)
|
||||
} else {
|
||||
r.out(w, emCloseTag)
|
||||
}
|
||||
case Strong:
|
||||
if entering {
|
||||
r.out(w, strongTag)
|
||||
} else {
|
||||
r.out(w, strongCloseTag)
|
||||
}
|
||||
case Del:
|
||||
if entering {
|
||||
r.out(w, delTag)
|
||||
} else {
|
||||
r.out(w, delCloseTag)
|
||||
}
|
||||
case HTMLSpan:
|
||||
if r.Flags&SkipHTML != 0 {
|
||||
break
|
||||
}
|
||||
r.out(w, node.Literal)
|
||||
case Link:
|
||||
// mark it but don't link it if it is not a safe link: no smartypants
|
||||
dest := node.LinkData.Destination
|
||||
if needSkipLink(r.Flags, dest) {
|
||||
if entering {
|
||||
r.out(w, ttTag)
|
||||
} else {
|
||||
r.out(w, ttCloseTag)
|
||||
}
|
||||
} else {
|
||||
if entering {
|
||||
dest = r.addAbsPrefix(dest)
|
||||
var hrefBuf bytes.Buffer
|
||||
hrefBuf.WriteString("href=\"")
|
||||
escLink(&hrefBuf, dest)
|
||||
hrefBuf.WriteByte('"')
|
||||
attrs = append(attrs, hrefBuf.String())
|
||||
if node.NoteID != 0 {
|
||||
r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
|
||||
break
|
||||
}
|
||||
attrs = appendLinkAttrs(attrs, r.Flags, dest)
|
||||
if len(node.LinkData.Title) > 0 {
|
||||
var titleBuff bytes.Buffer
|
||||
titleBuff.WriteString("title=\"")
|
||||
escapeHTML(&titleBuff, node.LinkData.Title)
|
||||
titleBuff.WriteByte('"')
|
||||
attrs = append(attrs, titleBuff.String())
|
||||
}
|
||||
r.tag(w, aTag, attrs)
|
||||
} else {
|
||||
if node.NoteID != 0 {
|
||||
break
|
||||
}
|
||||
r.out(w, aCloseTag)
|
||||
}
|
||||
}
|
||||
case Image:
|
||||
if r.Flags&SkipImages != 0 {
|
||||
return SkipChildren
|
||||
}
|
||||
if entering {
|
||||
dest := node.LinkData.Destination
|
||||
dest = r.addAbsPrefix(dest)
|
||||
if r.disableTags == 0 {
|
||||
//if options.safe && potentiallyUnsafe(dest) {
|
||||
//out(w, `<img src="" alt="`)
|
||||
//} else {
|
||||
r.out(w, []byte(`<img src="`))
|
||||
escLink(w, dest)
|
||||
r.out(w, []byte(`" alt="`))
|
||||
//}
|
||||
}
|
||||
r.disableTags++
|
||||
} else {
|
||||
r.disableTags--
|
||||
if r.disableTags == 0 {
|
||||
if node.LinkData.Title != nil {
|
||||
r.out(w, []byte(`" title="`))
|
||||
escapeHTML(w, node.LinkData.Title)
|
||||
}
|
||||
r.out(w, []byte(`" />`))
|
||||
}
|
||||
}
|
||||
case Code:
|
||||
r.out(w, codeTag)
|
||||
escapeAllHTML(w, node.Literal)
|
||||
r.out(w, codeCloseTag)
|
||||
case Document:
|
||||
break
|
||||
case Paragraph:
|
||||
if skipParagraphTags(node) {
|
||||
break
|
||||
}
|
||||
if entering {
|
||||
// TODO: untangle this clusterfuck about when the newlines need
|
||||
// to be added and when not.
|
||||
if node.Prev != nil {
|
||||
switch node.Prev.Type {
|
||||
case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
if node.Parent.Type == BlockQuote && node.Prev == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
r.out(w, pTag)
|
||||
} else {
|
||||
r.out(w, pCloseTag)
|
||||
if !(node.Parent.Type == Item && node.Next == nil) {
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
case BlockQuote:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, blockquoteTag)
|
||||
} else {
|
||||
r.out(w, blockquoteCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case HTMLBlock:
|
||||
if r.Flags&SkipHTML != 0 {
|
||||
break
|
||||
}
|
||||
r.cr(w)
|
||||
r.out(w, node.Literal)
|
||||
r.cr(w)
|
||||
case Heading:
|
||||
headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
|
||||
openTag, closeTag := headingTagsFromLevel(headingLevel)
|
||||
if entering {
|
||||
if node.IsTitleblock {
|
||||
attrs = append(attrs, `class="title"`)
|
||||
}
|
||||
if node.HeadingID != "" {
|
||||
id := r.ensureUniqueHeadingID(node.HeadingID)
|
||||
if r.HeadingIDPrefix != "" {
|
||||
id = r.HeadingIDPrefix + id
|
||||
}
|
||||
if r.HeadingIDSuffix != "" {
|
||||
id = id + r.HeadingIDSuffix
|
||||
}
|
||||
attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
|
||||
}
|
||||
r.cr(w)
|
||||
r.tag(w, openTag, attrs)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
if !(node.Parent.Type == Item && node.Next == nil) {
|
||||
r.cr(w)
|
||||
}
|
||||
}
|
||||
case HorizontalRule:
|
||||
r.cr(w)
|
||||
r.outHRTag(w)
|
||||
r.cr(w)
|
||||
case List:
|
||||
openTag := ulTag
|
||||
closeTag := ulCloseTag
|
||||
if node.ListFlags&ListTypeOrdered != 0 {
|
||||
openTag = olTag
|
||||
closeTag = olCloseTag
|
||||
}
|
||||
if node.ListFlags&ListTypeDefinition != 0 {
|
||||
openTag = dlTag
|
||||
closeTag = dlCloseTag
|
||||
}
|
||||
if entering {
|
||||
if node.IsFootnotesList {
|
||||
r.out(w, footnotesDivBytes)
|
||||
r.outHRTag(w)
|
||||
r.cr(w)
|
||||
}
|
||||
r.cr(w)
|
||||
if node.Parent.Type == Item && node.Parent.Parent.Tight {
|
||||
r.cr(w)
|
||||
}
|
||||
r.tag(w, openTag[:len(openTag)-1], attrs)
|
||||
r.cr(w)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
//cr(w)
|
||||
//if node.parent.Type != Item {
|
||||
// cr(w)
|
||||
//}
|
||||
if node.Parent.Type == Item && node.Next != nil {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.IsFootnotesList {
|
||||
r.out(w, footnotesCloseDivBytes)
|
||||
}
|
||||
}
|
||||
case Item:
|
||||
openTag := liTag
|
||||
closeTag := liCloseTag
|
||||
if node.ListFlags&ListTypeDefinition != 0 {
|
||||
openTag = ddTag
|
||||
closeTag = ddCloseTag
|
||||
}
|
||||
if node.ListFlags&ListTypeTerm != 0 {
|
||||
openTag = dtTag
|
||||
closeTag = dtCloseTag
|
||||
}
|
||||
if entering {
|
||||
if itemOpenCR(node) {
|
||||
r.cr(w)
|
||||
}
|
||||
if node.ListData.RefLink != nil {
|
||||
slug := slugify(node.ListData.RefLink)
|
||||
r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
|
||||
break
|
||||
}
|
||||
r.out(w, openTag)
|
||||
} else {
|
||||
if node.ListData.RefLink != nil {
|
||||
slug := slugify(node.ListData.RefLink)
|
||||
if r.Flags&FootnoteReturnLinks != 0 {
|
||||
r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
|
||||
}
|
||||
}
|
||||
r.out(w, closeTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case CodeBlock:
|
||||
attrs = appendLanguageAttr(attrs, node.Info)
|
||||
r.cr(w)
|
||||
r.out(w, preTag)
|
||||
r.tag(w, codeTag[:len(codeTag)-1], attrs)
|
||||
escapeAllHTML(w, node.Literal)
|
||||
r.out(w, codeCloseTag)
|
||||
r.out(w, preCloseTag)
|
||||
if node.Parent.Type != Item {
|
||||
r.cr(w)
|
||||
}
|
||||
case Table:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, tableTag)
|
||||
} else {
|
||||
r.out(w, tableCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableCell:
|
||||
openTag := tdTag
|
||||
closeTag := tdCloseTag
|
||||
if node.IsHeader {
|
||||
openTag = thTag
|
||||
closeTag = thCloseTag
|
||||
}
|
||||
if entering {
|
||||
align := cellAlignment(node.Align)
|
||||
if align != "" {
|
||||
attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
|
||||
}
|
||||
if node.Prev == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
r.tag(w, openTag, attrs)
|
||||
} else {
|
||||
r.out(w, closeTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableHead:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, theadTag)
|
||||
} else {
|
||||
r.out(w, theadCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableBody:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, tbodyTag)
|
||||
// XXX: this is to adhere to a rather silly test. Should fix test.
|
||||
if node.FirstChild == nil {
|
||||
r.cr(w)
|
||||
}
|
||||
} else {
|
||||
r.out(w, tbodyCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
case TableRow:
|
||||
if entering {
|
||||
r.cr(w)
|
||||
r.out(w, trTag)
|
||||
} else {
|
||||
r.out(w, trCloseTag)
|
||||
r.cr(w)
|
||||
}
|
||||
default:
|
||||
panic("Unknown node type " + node.Type.String())
|
||||
}
|
||||
return GoToNext
|
||||
}
|
||||
|
||||
// RenderHeader writes HTML document preamble and TOC if requested.
|
||||
func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
|
||||
r.writeDocumentHeader(w)
|
||||
if r.Flags&TOC != 0 {
|
||||
r.writeTOC(w, ast)
|
||||
}
|
||||
}
|
||||
|
||||
// RenderFooter writes HTML document footer.
|
||||
func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
|
||||
if r.Flags&CompletePage == 0 {
|
||||
return
|
||||
}
|
||||
io.WriteString(w, "\n</body>\n</html>\n")
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) {
|
||||
if r.Flags&CompletePage == 0 {
|
||||
return
|
||||
}
|
||||
ending := ""
|
||||
if r.Flags&UseXHTML != 0 {
|
||||
io.WriteString(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
|
||||
io.WriteString(w, "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
|
||||
io.WriteString(w, "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
|
||||
ending = " /"
|
||||
} else {
|
||||
io.WriteString(w, "<!DOCTYPE html>\n")
|
||||
io.WriteString(w, "<html>\n")
|
||||
}
|
||||
io.WriteString(w, "<head>\n")
|
||||
io.WriteString(w, " <title>")
|
||||
if r.Flags&Smartypants != 0 {
|
||||
r.sr.Process(w, []byte(r.Title))
|
||||
} else {
|
||||
escapeHTML(w, []byte(r.Title))
|
||||
}
|
||||
io.WriteString(w, "</title>\n")
|
||||
io.WriteString(w, " <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
|
||||
io.WriteString(w, Version)
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
io.WriteString(w, " <meta charset=\"utf-8\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
if r.CSS != "" {
|
||||
io.WriteString(w, " <link rel=\"stylesheet\" type=\"text/css\" href=\"")
|
||||
escapeHTML(w, []byte(r.CSS))
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
}
|
||||
if r.Icon != "" {
|
||||
io.WriteString(w, " <link rel=\"icon\" type=\"image/x-icon\" href=\"")
|
||||
escapeHTML(w, []byte(r.Icon))
|
||||
io.WriteString(w, "\"")
|
||||
io.WriteString(w, ending)
|
||||
io.WriteString(w, ">\n")
|
||||
}
|
||||
io.WriteString(w, "</head>\n")
|
||||
io.WriteString(w, "<body>\n\n")
|
||||
}
|
||||
|
||||
func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) {
|
||||
buf := bytes.Buffer{}
|
||||
|
||||
inHeading := false
|
||||
tocLevel := 0
|
||||
headingCount := 0
|
||||
|
||||
ast.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Heading && !node.HeadingData.IsTitleblock {
|
||||
inHeading = entering
|
||||
if entering {
|
||||
node.HeadingID = fmt.Sprintf("toc_%d", headingCount)
|
||||
if node.Level == tocLevel {
|
||||
buf.WriteString("</li>\n\n<li>")
|
||||
} else if node.Level < tocLevel {
|
||||
for node.Level < tocLevel {
|
||||
tocLevel--
|
||||
buf.WriteString("</li>\n</ul>")
|
||||
}
|
||||
buf.WriteString("</li>\n\n<li>")
|
||||
} else {
|
||||
for node.Level > tocLevel {
|
||||
tocLevel++
|
||||
buf.WriteString("\n<ul>\n<li>")
|
||||
}
|
||||
}
|
||||
|
||||
fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
|
||||
headingCount++
|
||||
} else {
|
||||
buf.WriteString("</a>")
|
||||
}
|
||||
return GoToNext
|
||||
}
|
||||
|
||||
if inHeading {
|
||||
return r.RenderNode(&buf, node, entering)
|
||||
}
|
||||
|
||||
return GoToNext
|
||||
})
|
||||
|
||||
for ; tocLevel > 0; tocLevel-- {
|
||||
buf.WriteString("</li>\n</ul>")
|
||||
}
|
||||
|
||||
if buf.Len() > 0 {
|
||||
io.WriteString(w, "<nav>\n")
|
||||
w.Write(buf.Bytes())
|
||||
io.WriteString(w, "\n\n</nav>\n")
|
||||
}
|
||||
r.lastOutputLen = buf.Len()
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,950 +0,0 @@
|
|||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
//
|
||||
// Markdown parsing and processing
|
||||
//
|
||||
|
||||
// Version string of the package. Appears in the rendered document when
|
||||
// CompletePage flag is on.
|
||||
const Version = "2.0"
|
||||
|
||||
// Extensions is a bitwise or'ed collection of enabled Blackfriday's
|
||||
// extensions.
|
||||
type Extensions int
|
||||
|
||||
// These are the supported markdown parsing extensions.
|
||||
// OR these values together to select multiple extensions.
|
||||
const (
|
||||
NoExtensions Extensions = 0
|
||||
NoIntraEmphasis Extensions = 1 << iota // Ignore emphasis markers inside words
|
||||
Tables // Render tables
|
||||
FencedCode // Render fenced code blocks
|
||||
Autolink // Detect embedded URLs that are not explicitly marked
|
||||
Strikethrough // Strikethrough text using ~~test~~
|
||||
LaxHTMLBlocks // Loosen up HTML block parsing rules
|
||||
SpaceHeadings // Be strict about prefix heading rules
|
||||
HardLineBreak // Translate newlines into line breaks
|
||||
TabSizeEight // Expand tabs to eight spaces instead of four
|
||||
Footnotes // Pandoc-style footnotes
|
||||
NoEmptyLineBeforeBlock // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
|
||||
HeadingIDs // specify heading IDs with {#id}
|
||||
Titleblock // Titleblock ala pandoc
|
||||
AutoHeadingIDs // Create the heading ID from the text
|
||||
BackslashLineBreak // Translate trailing backslashes into line breaks
|
||||
DefinitionLists // Render definition lists
|
||||
|
||||
CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
|
||||
SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
|
||||
|
||||
CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode |
|
||||
Autolink | Strikethrough | SpaceHeadings | HeadingIDs |
|
||||
BackslashLineBreak | DefinitionLists
|
||||
)
|
||||
|
||||
// ListType contains bitwise or'ed flags for list and list item objects.
|
||||
type ListType int
|
||||
|
||||
// These are the possible flag values for the ListItem renderer.
|
||||
// Multiple flag values may be ORed together.
|
||||
// These are mostly of interest if you are writing a new output format.
|
||||
const (
|
||||
ListTypeOrdered ListType = 1 << iota
|
||||
ListTypeDefinition
|
||||
ListTypeTerm
|
||||
|
||||
ListItemContainsBlock
|
||||
ListItemBeginningOfList // TODO: figure out if this is of any use now
|
||||
ListItemEndOfList
|
||||
)
|
||||
|
||||
// CellAlignFlags holds a type of alignment in a table cell.
|
||||
type CellAlignFlags int
|
||||
|
||||
// These are the possible flag values for the table cell renderer.
|
||||
// Only a single one of these values will be used; they are not ORed together.
|
||||
// These are mostly of interest if you are writing a new output format.
|
||||
const (
|
||||
TableAlignmentLeft CellAlignFlags = 1 << iota
|
||||
TableAlignmentRight
|
||||
TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight)
|
||||
)
|
||||
|
||||
// The size of a tab stop.
|
||||
const (
|
||||
TabSizeDefault = 4
|
||||
TabSizeDouble = 8
|
||||
)
|
||||
|
||||
// blockTags is a set of tags that are recognized as HTML block tags.
|
||||
// Any of these can be included in markdown text without special escaping.
|
||||
var blockTags = map[string]struct{}{
|
||||
"blockquote": {},
|
||||
"del": {},
|
||||
"div": {},
|
||||
"dl": {},
|
||||
"fieldset": {},
|
||||
"form": {},
|
||||
"h1": {},
|
||||
"h2": {},
|
||||
"h3": {},
|
||||
"h4": {},
|
||||
"h5": {},
|
||||
"h6": {},
|
||||
"iframe": {},
|
||||
"ins": {},
|
||||
"math": {},
|
||||
"noscript": {},
|
||||
"ol": {},
|
||||
"pre": {},
|
||||
"p": {},
|
||||
"script": {},
|
||||
"style": {},
|
||||
"table": {},
|
||||
"ul": {},
|
||||
|
||||
// HTML5
|
||||
"address": {},
|
||||
"article": {},
|
||||
"aside": {},
|
||||
"canvas": {},
|
||||
"figcaption": {},
|
||||
"figure": {},
|
||||
"footer": {},
|
||||
"header": {},
|
||||
"hgroup": {},
|
||||
"main": {},
|
||||
"nav": {},
|
||||
"output": {},
|
||||
"progress": {},
|
||||
"section": {},
|
||||
"video": {},
|
||||
}
|
||||
|
||||
// Renderer is the rendering interface. This is mostly of interest if you are
|
||||
// implementing a new rendering format.
|
||||
//
|
||||
// Only an HTML implementation is provided in this repository, see the README
|
||||
// for external implementations.
|
||||
type Renderer interface {
|
||||
// RenderNode is the main rendering method. It will be called once for
|
||||
// every leaf node and twice for every non-leaf node (first with
|
||||
// entering=true, then with entering=false). The method should write its
|
||||
// rendition of the node to the supplied writer w.
|
||||
RenderNode(w io.Writer, node *Node, entering bool) WalkStatus
|
||||
|
||||
// RenderHeader is a method that allows the renderer to produce some
|
||||
// content preceding the main body of the output document. The header is
|
||||
// understood in the broad sense here. For example, the default HTML
|
||||
// renderer will write not only the HTML document preamble, but also the
|
||||
// table of contents if it was requested.
|
||||
//
|
||||
// The method will be passed an entire document tree, in case a particular
|
||||
// implementation needs to inspect it to produce output.
|
||||
//
|
||||
// The output should be written to the supplied writer w. If your
|
||||
// implementation has no header to write, supply an empty implementation.
|
||||
RenderHeader(w io.Writer, ast *Node)
|
||||
|
||||
// RenderFooter is a symmetric counterpart of RenderHeader.
|
||||
RenderFooter(w io.Writer, ast *Node)
|
||||
}
|
||||
|
||||
// Callback functions for inline parsing. One such function is defined
|
||||
// for each character that triggers a response when parsing inline data.
|
||||
type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node)
|
||||
|
||||
// Markdown is a type that holds extensions and the runtime state used by
|
||||
// Parse, and the renderer. You can not use it directly, construct it with New.
|
||||
type Markdown struct {
|
||||
renderer Renderer
|
||||
referenceOverride ReferenceOverrideFunc
|
||||
refs map[string]*reference
|
||||
inlineCallback [256]inlineParser
|
||||
extensions Extensions
|
||||
nesting int
|
||||
maxNesting int
|
||||
insideLink bool
|
||||
|
||||
// Footnotes need to be ordered as well as available to quickly check for
|
||||
// presence. If a ref is also a footnote, it's stored both in refs and here
|
||||
// in notes. Slice is nil if footnotes not enabled.
|
||||
notes []*reference
|
||||
|
||||
doc *Node
|
||||
tip *Node // = doc
|
||||
oldTip *Node
|
||||
lastMatchedContainer *Node // = doc
|
||||
allClosed bool
|
||||
}
|
||||
|
||||
func (p *Markdown) getRef(refid string) (ref *reference, found bool) {
|
||||
if p.referenceOverride != nil {
|
||||
r, overridden := p.referenceOverride(refid)
|
||||
if overridden {
|
||||
if r == nil {
|
||||
return nil, false
|
||||
}
|
||||
return &reference{
|
||||
link: []byte(r.Link),
|
||||
title: []byte(r.Title),
|
||||
noteID: 0,
|
||||
hasBlock: false,
|
||||
text: []byte(r.Text)}, true
|
||||
}
|
||||
}
|
||||
// refs are case insensitive
|
||||
ref, found = p.refs[strings.ToLower(refid)]
|
||||
return ref, found
|
||||
}
|
||||
|
||||
func (p *Markdown) finalize(block *Node) {
|
||||
above := block.Parent
|
||||
block.open = false
|
||||
p.tip = above
|
||||
}
|
||||
|
||||
func (p *Markdown) addChild(node NodeType, offset uint32) *Node {
|
||||
return p.addExistingChild(NewNode(node), offset)
|
||||
}
|
||||
|
||||
func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node {
|
||||
for !p.tip.canContain(node.Type) {
|
||||
p.finalize(p.tip)
|
||||
}
|
||||
p.tip.AppendChild(node)
|
||||
p.tip = node
|
||||
return node
|
||||
}
|
||||
|
||||
func (p *Markdown) closeUnmatchedBlocks() {
|
||||
if !p.allClosed {
|
||||
for p.oldTip != p.lastMatchedContainer {
|
||||
parent := p.oldTip.Parent
|
||||
p.finalize(p.oldTip)
|
||||
p.oldTip = parent
|
||||
}
|
||||
p.allClosed = true
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
//
|
||||
// Public interface
|
||||
//
|
||||
//
|
||||
|
||||
// Reference represents the details of a link.
|
||||
// See the documentation in Options for more details on use-case.
|
||||
type Reference struct {
|
||||
// Link is usually the URL the reference points to.
|
||||
Link string
|
||||
// Title is the alternate text describing the link in more detail.
|
||||
Title string
|
||||
// Text is the optional text to override the ref with if the syntax used was
|
||||
// [refid][]
|
||||
Text string
|
||||
}
|
||||
|
||||
// ReferenceOverrideFunc is expected to be called with a reference string and
|
||||
// return either a valid Reference type that the reference string maps to or
|
||||
// nil. If overridden is false, the default reference logic will be executed.
|
||||
// See the documentation in Options for more details on use-case.
|
||||
type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
|
||||
|
||||
// New constructs a Markdown processor. You can use the same With* functions as
|
||||
// for Run() to customize parser's behavior and the renderer.
|
||||
func New(opts ...Option) *Markdown {
|
||||
var p Markdown
|
||||
for _, opt := range opts {
|
||||
opt(&p)
|
||||
}
|
||||
p.refs = make(map[string]*reference)
|
||||
p.maxNesting = 16
|
||||
p.insideLink = false
|
||||
docNode := NewNode(Document)
|
||||
p.doc = docNode
|
||||
p.tip = docNode
|
||||
p.oldTip = docNode
|
||||
p.lastMatchedContainer = docNode
|
||||
p.allClosed = true
|
||||
// register inline parsers
|
||||
p.inlineCallback[' '] = maybeLineBreak
|
||||
p.inlineCallback['*'] = emphasis
|
||||
p.inlineCallback['_'] = emphasis
|
||||
if p.extensions&Strikethrough != 0 {
|
||||
p.inlineCallback['~'] = emphasis
|
||||
}
|
||||
p.inlineCallback['`'] = codeSpan
|
||||
p.inlineCallback['\n'] = lineBreak
|
||||
p.inlineCallback['['] = link
|
||||
p.inlineCallback['<'] = leftAngle
|
||||
p.inlineCallback['\\'] = escape
|
||||
p.inlineCallback['&'] = entity
|
||||
p.inlineCallback['!'] = maybeImage
|
||||
p.inlineCallback['^'] = maybeInlineFootnote
|
||||
if p.extensions&Autolink != 0 {
|
||||
p.inlineCallback['h'] = maybeAutoLink
|
||||
p.inlineCallback['m'] = maybeAutoLink
|
||||
p.inlineCallback['f'] = maybeAutoLink
|
||||
p.inlineCallback['H'] = maybeAutoLink
|
||||
p.inlineCallback['M'] = maybeAutoLink
|
||||
p.inlineCallback['F'] = maybeAutoLink
|
||||
}
|
||||
if p.extensions&Footnotes != 0 {
|
||||
p.notes = make([]*reference, 0)
|
||||
}
|
||||
return &p
|
||||
}
|
||||
|
||||
// Option customizes the Markdown processor's default behavior.
|
||||
type Option func(*Markdown)
|
||||
|
||||
// WithRenderer allows you to override the default renderer.
|
||||
func WithRenderer(r Renderer) Option {
|
||||
return func(p *Markdown) {
|
||||
p.renderer = r
|
||||
}
|
||||
}
|
||||
|
||||
// WithExtensions allows you to pick some of the many extensions provided by
|
||||
// Blackfriday. You can bitwise OR them.
|
||||
func WithExtensions(e Extensions) Option {
|
||||
return func(p *Markdown) {
|
||||
p.extensions = e
|
||||
}
|
||||
}
|
||||
|
||||
// WithNoExtensions turns off all extensions and custom behavior.
|
||||
func WithNoExtensions() Option {
|
||||
return func(p *Markdown) {
|
||||
p.extensions = NoExtensions
|
||||
p.renderer = NewHTMLRenderer(HTMLRendererParameters{
|
||||
Flags: HTMLFlagsNone,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// WithRefOverride sets an optional function callback that is called every
|
||||
// time a reference is resolved.
|
||||
//
|
||||
// In Markdown, the link reference syntax can be made to resolve a link to
|
||||
// a reference instead of an inline URL, in one of the following ways:
|
||||
//
|
||||
// * [link text][refid]
|
||||
// * [refid][]
|
||||
//
|
||||
// Usually, the refid is defined at the bottom of the Markdown document. If
|
||||
// this override function is provided, the refid is passed to the override
|
||||
// function first, before consulting the defined refids at the bottom. If
|
||||
// the override function indicates an override did not occur, the refids at
|
||||
// the bottom will be used to fill in the link details.
|
||||
func WithRefOverride(o ReferenceOverrideFunc) Option {
|
||||
return func(p *Markdown) {
|
||||
p.referenceOverride = o
|
||||
}
|
||||
}
|
||||
|
||||
// Run is the main entry point to Blackfriday. It parses and renders a
|
||||
// block of markdown-encoded text.
|
||||
//
|
||||
// The simplest invocation of Run takes one argument, input:
|
||||
// output := Run(input)
|
||||
// This will parse the input with CommonExtensions enabled and render it with
|
||||
// the default HTMLRenderer (with CommonHTMLFlags).
|
||||
//
|
||||
// Variadic arguments opts can customize the default behavior. Since Markdown
|
||||
// type does not contain exported fields, you can not use it directly. Instead,
|
||||
// use the With* functions. For example, this will call the most basic
|
||||
// functionality, with no extensions:
|
||||
// output := Run(input, WithNoExtensions())
|
||||
//
|
||||
// You can use any number of With* arguments, even contradicting ones. They
|
||||
// will be applied in order of appearance and the latter will override the
|
||||
// former:
|
||||
// output := Run(input, WithNoExtensions(), WithExtensions(exts),
|
||||
// WithRenderer(yourRenderer))
|
||||
func Run(input []byte, opts ...Option) []byte {
|
||||
r := NewHTMLRenderer(HTMLRendererParameters{
|
||||
Flags: CommonHTMLFlags,
|
||||
})
|
||||
optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)}
|
||||
optList = append(optList, opts...)
|
||||
parser := New(optList...)
|
||||
ast := parser.Parse(input)
|
||||
var buf bytes.Buffer
|
||||
parser.renderer.RenderHeader(&buf, ast)
|
||||
ast.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
return parser.renderer.RenderNode(&buf, node, entering)
|
||||
})
|
||||
parser.renderer.RenderFooter(&buf, ast)
|
||||
return buf.Bytes()
|
||||
}
|
||||
|
||||
// Parse is an entry point to the parsing part of Blackfriday. It takes an
|
||||
// input markdown document and produces a syntax tree for its contents. This
|
||||
// tree can then be rendered with a default or custom renderer, or
|
||||
// analyzed/transformed by the caller to whatever non-standard needs they have.
|
||||
// The return value is the root node of the syntax tree.
|
||||
func (p *Markdown) Parse(input []byte) *Node {
|
||||
p.block(input)
|
||||
// Walk the tree and finish up some of unfinished blocks
|
||||
for p.tip != nil {
|
||||
p.finalize(p.tip)
|
||||
}
|
||||
// Walk the tree again and process inline markdown in each block
|
||||
p.doc.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell {
|
||||
p.inline(node, node.content)
|
||||
node.content = nil
|
||||
}
|
||||
return GoToNext
|
||||
})
|
||||
p.parseRefsToAST()
|
||||
return p.doc
|
||||
}
|
||||
|
||||
func (p *Markdown) parseRefsToAST() {
|
||||
if p.extensions&Footnotes == 0 || len(p.notes) == 0 {
|
||||
return
|
||||
}
|
||||
p.tip = p.doc
|
||||
block := p.addBlock(List, nil)
|
||||
block.IsFootnotesList = true
|
||||
block.ListFlags = ListTypeOrdered
|
||||
flags := ListItemBeginningOfList
|
||||
// Note: this loop is intentionally explicit, not range-form. This is
|
||||
// because the body of the loop will append nested footnotes to p.notes and
|
||||
// we need to process those late additions. Range form would only walk over
|
||||
// the fixed initial set.
|
||||
for i := 0; i < len(p.notes); i++ {
|
||||
ref := p.notes[i]
|
||||
p.addExistingChild(ref.footnote, 0)
|
||||
block := ref.footnote
|
||||
block.ListFlags = flags | ListTypeOrdered
|
||||
block.RefLink = ref.link
|
||||
if ref.hasBlock {
|
||||
flags |= ListItemContainsBlock
|
||||
p.block(ref.title)
|
||||
} else {
|
||||
p.inline(block, ref.title)
|
||||
}
|
||||
flags &^= ListItemBeginningOfList | ListItemContainsBlock
|
||||
}
|
||||
above := block.Parent
|
||||
finalizeList(block)
|
||||
p.tip = above
|
||||
block.Walk(func(node *Node, entering bool) WalkStatus {
|
||||
if node.Type == Paragraph || node.Type == Heading {
|
||||
p.inline(node, node.content)
|
||||
node.content = nil
|
||||
}
|
||||
return GoToNext
|
||||
})
|
||||
}
|
||||
|
||||
//
|
||||
// Link references
|
||||
//
|
||||
// This section implements support for references that (usually) appear
|
||||
// as footnotes in a document, and can be referenced anywhere in the document.
|
||||
// The basic format is:
|
||||
//
|
||||
// [1]: http://www.google.com/ "Google"
|
||||
// [2]: http://www.github.com/ "Github"
|
||||
//
|
||||
// Anywhere in the document, the reference can be linked by referring to its
|
||||
// label, i.e., 1 and 2 in this example, as in:
|
||||
//
|
||||
// This library is hosted on [Github][2], a git hosting site.
|
||||
//
|
||||
// Actual footnotes as specified in Pandoc and supported by some other Markdown
|
||||
// libraries such as php-markdown are also taken care of. They look like this:
|
||||
//
|
||||
// This sentence needs a bit of further explanation.[^note]
|
||||
//
|
||||
// [^note]: This is the explanation.
|
||||
//
|
||||
// Footnotes should be placed at the end of the document in an ordered list.
|
||||
// Finally, there are inline footnotes such as:
|
||||
//
|
||||
// Inline footnotes^[Also supported.] provide a quick inline explanation,
|
||||
// but are rendered at the bottom of the document.
|
||||
//
|
||||
|
||||
// reference holds all information necessary for a reference-style links or
|
||||
// footnotes.
|
||||
//
|
||||
// Consider this markdown with reference-style links:
|
||||
//
|
||||
// [link][ref]
|
||||
//
|
||||
// [ref]: /url/ "tooltip title"
|
||||
//
|
||||
// It will be ultimately converted to this HTML:
|
||||
//
|
||||
// <p><a href=\"/url/\" title=\"title\">link</a></p>
|
||||
//
|
||||
// And a reference structure will be populated as follows:
|
||||
//
|
||||
// p.refs["ref"] = &reference{
|
||||
// link: "/url/",
|
||||
// title: "tooltip title",
|
||||
// }
|
||||
//
|
||||
// Alternatively, reference can contain information about a footnote. Consider
|
||||
// this markdown:
|
||||
//
|
||||
// Text needing a footnote.[^a]
|
||||
//
|
||||
// [^a]: This is the note
|
||||
//
|
||||
// A reference structure will be populated as follows:
|
||||
//
|
||||
// p.refs["a"] = &reference{
|
||||
// link: "a",
|
||||
// title: "This is the note",
|
||||
// noteID: <some positive int>,
|
||||
// }
|
||||
//
|
||||
// TODO: As you can see, it begs for splitting into two dedicated structures
|
||||
// for refs and for footnotes.
|
||||
type reference struct {
|
||||
link []byte
|
||||
title []byte
|
||||
noteID int // 0 if not a footnote ref
|
||||
hasBlock bool
|
||||
footnote *Node // a link to the Item node within a list of footnotes
|
||||
|
||||
text []byte // only gets populated by refOverride feature with Reference.Text
|
||||
}
|
||||
|
||||
func (r *reference) String() string {
|
||||
return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}",
|
||||
r.link, r.title, r.text, r.noteID, r.hasBlock)
|
||||
}
|
||||
|
||||
// Check whether or not data starts with a reference link.
|
||||
// If so, it is parsed and stored in the list of references
|
||||
// (in the render struct).
|
||||
// Returns the number of bytes to skip to move past it,
|
||||
// or zero if the first line is not a reference.
|
||||
func isReference(p *Markdown, data []byte, tabSize int) int {
|
||||
// up to 3 optional leading spaces
|
||||
if len(data) < 4 {
|
||||
return 0
|
||||
}
|
||||
i := 0
|
||||
for i < 3 && data[i] == ' ' {
|
||||
i++
|
||||
}
|
||||
|
||||
noteID := 0
|
||||
|
||||
// id part: anything but a newline between brackets
|
||||
if data[i] != '[' {
|
||||
return 0
|
||||
}
|
||||
i++
|
||||
if p.extensions&Footnotes != 0 {
|
||||
if i < len(data) && data[i] == '^' {
|
||||
// we can set it to anything here because the proper noteIds will
|
||||
// be assigned later during the second pass. It just has to be != 0
|
||||
noteID = 1
|
||||
i++
|
||||
}
|
||||
}
|
||||
idOffset := i
|
||||
for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' {
|
||||
i++
|
||||
}
|
||||
if i >= len(data) || data[i] != ']' {
|
||||
return 0
|
||||
}
|
||||
idEnd := i
|
||||
// footnotes can have empty ID, like this: [^], but a reference can not be
|
||||
// empty like this: []. Break early if it's not a footnote and there's no ID
|
||||
if noteID == 0 && idOffset == idEnd {
|
||||
return 0
|
||||
}
|
||||
// spacer: colon (space | tab)* newline? (space | tab)*
|
||||
i++
|
||||
if i >= len(data) || data[i] != ':' {
|
||||
return 0
|
||||
}
|
||||
i++
|
||||
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
|
||||
i++
|
||||
}
|
||||
if i < len(data) && (data[i] == '\n' || data[i] == '\r') {
|
||||
i++
|
||||
if i < len(data) && data[i] == '\n' && data[i-1] == '\r' {
|
||||
i++
|
||||
}
|
||||
}
|
||||
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
|
||||
i++
|
||||
}
|
||||
if i >= len(data) {
|
||||
return 0
|
||||
}
|
||||
|
||||
var (
|
||||
linkOffset, linkEnd int
|
||||
titleOffset, titleEnd int
|
||||
lineEnd int
|
||||
raw []byte
|
||||
hasBlock bool
|
||||
)
|
||||
|
||||
if p.extensions&Footnotes != 0 && noteID != 0 {
|
||||
linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
|
||||
lineEnd = linkEnd
|
||||
} else {
|
||||
linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i)
|
||||
}
|
||||
if lineEnd == 0 {
|
||||
return 0
|
||||
}
|
||||
|
||||
// a valid ref has been found
|
||||
|
||||
ref := &reference{
|
||||
noteID: noteID,
|
||||
hasBlock: hasBlock,
|
||||
}
|
||||
|
||||
if noteID > 0 {
|
||||
// reusing the link field for the id since footnotes don't have links
|
||||
ref.link = data[idOffset:idEnd]
|
||||
// if footnote, it's not really a title, it's the contained text
|
||||
ref.title = raw
|
||||
} else {
|
||||
ref.link = data[linkOffset:linkEnd]
|
||||
ref.title = data[titleOffset:titleEnd]
|
||||
}
|
||||
|
||||
// id matches are case-insensitive
|
||||
id := string(bytes.ToLower(data[idOffset:idEnd]))
|
||||
|
||||
p.refs[id] = ref
|
||||
|
||||
return lineEnd
|
||||
}
|
||||
|
||||
func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
|
||||
// link: whitespace-free sequence, optionally between angle brackets
|
||||
if data[i] == '<' {
|
||||
i++
|
||||
}
|
||||
linkOffset = i
|
||||
for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
|
||||
i++
|
||||
}
|
||||
linkEnd = i
|
||||
if data[linkOffset] == '<' && data[linkEnd-1] == '>' {
|
||||
linkOffset++
|
||||
linkEnd--
|
||||
}
|
||||
|
||||
// optional spacer: (space | tab)* (newline | '\'' | '"' | '(' )
|
||||
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
|
||||
i++
|
||||
}
|
||||
if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' {
|
||||
return
|
||||
}
|
||||
|
||||
// compute end-of-line
|
||||
if i >= len(data) || data[i] == '\r' || data[i] == '\n' {
|
||||
lineEnd = i
|
||||
}
|
||||
if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' {
|
||||
lineEnd++
|
||||
}
|
||||
|
||||
// optional (space|tab)* spacer after a newline
|
||||
if lineEnd > 0 {
|
||||
i = lineEnd + 1
|
||||
for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
|
||||
i++
|
||||
}
|
||||
}
|
||||
|
||||
// optional title: any non-newline sequence enclosed in '"() alone on its line
|
||||
if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') {
|
||||
i++
|
||||
titleOffset = i
|
||||
|
||||
// look for EOL
|
||||
for i < len(data) && data[i] != '\n' && data[i] != '\r' {
|
||||
i++
|
||||
}
|
||||
if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' {
|
||||
titleEnd = i + 1
|
||||
} else {
|
||||
titleEnd = i
|
||||
}
|
||||
|
||||
// step back
|
||||
i--
|
||||
for i > titleOffset && (data[i] == ' ' || data[i] == '\t') {
|
||||
i--
|
||||
}
|
||||
if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') {
|
||||
lineEnd = titleEnd
|
||||
titleEnd = i
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// The first bit of this logic is the same as Parser.listItem, but the rest
|
||||
// is much simpler. This function simply finds the entire block and shifts it
|
||||
// over by one tab if it is indeed a block (just returns the line if it's not).
|
||||
// blockEnd is the end of the section in the input buffer, and contents is the
|
||||
// extracted text that was shifted over one tab. It will need to be rendered at
|
||||
// the end of the document.
|
||||
func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
|
||||
if i == 0 || len(data) == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// skip leading whitespace on first line
|
||||
for i < len(data) && data[i] == ' ' {
|
||||
i++
|
||||
}
|
||||
|
||||
blockStart = i
|
||||
|
||||
// find the end of the line
|
||||
blockEnd = i
|
||||
for i < len(data) && data[i-1] != '\n' {
|
||||
i++
|
||||
}
|
||||
|
||||
// get working buffer
|
||||
var raw bytes.Buffer
|
||||
|
||||
// put the first line into the working buffer
|
||||
raw.Write(data[blockEnd:i])
|
||||
blockEnd = i
|
||||
|
||||
// process the following lines
|
||||
containsBlankLine := false
|
||||
|
||||
gatherLines:
|
||||
for blockEnd < len(data) {
|
||||
i++
|
||||
|
||||
// find the end of this line
|
||||
for i < len(data) && data[i-1] != '\n' {
|
||||
i++
|
||||
}
|
||||
|
||||
// if it is an empty line, guess that it is part of this item
|
||||
// and move on to the next line
|
||||
if p.isEmpty(data[blockEnd:i]) > 0 {
|
||||
containsBlankLine = true
|
||||
blockEnd = i
|
||||
continue
|
||||
}
|
||||
|
||||
n := 0
|
||||
if n = isIndented(data[blockEnd:i], indentSize); n == 0 {
|
||||
// this is the end of the block.
|
||||
// we don't want to include this last line in the index.
|
||||
break gatherLines
|
||||
}
|
||||
|
||||
// if there were blank lines before this one, insert a new one now
|
||||
if containsBlankLine {
|
||||
raw.WriteByte('\n')
|
||||
containsBlankLine = false
|
||||
}
|
||||
|
||||
// get rid of that first tab, write to buffer
|
||||
raw.Write(data[blockEnd+n : i])
|
||||
hasBlock = true
|
||||
|
||||
blockEnd = i
|
||||
}
|
||||
|
||||
if data[blockEnd-1] != '\n' {
|
||||
raw.WriteByte('\n')
|
||||
}
|
||||
|
||||
contents = raw.Bytes()
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
//
|
||||
//
|
||||
// Miscellaneous helper functions
|
||||
//
|
||||
//
|
||||
|
||||
// Test if a character is a punctuation symbol.
|
||||
// Taken from a private function in regexp in the stdlib.
|
||||
func ispunct(c byte) bool {
|
||||
for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
|
||||
if c == r {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Test if a character is a whitespace character.
|
||||
func isspace(c byte) bool {
|
||||
return ishorizontalspace(c) || isverticalspace(c)
|
||||
}
|
||||
|
||||
// Test if a character is a horizontal whitespace character.
|
||||
func ishorizontalspace(c byte) bool {
|
||||
return c == ' ' || c == '\t'
|
||||
}
|
||||
|
||||
// Test if a character is a vertical character.
|
||||
func isverticalspace(c byte) bool {
|
||||
return c == '\n' || c == '\r' || c == '\f' || c == '\v'
|
||||
}
|
||||
|
||||
// Test if a character is letter.
|
||||
func isletter(c byte) bool {
|
||||
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
|
||||
}
|
||||
|
||||
// Test if a character is a letter or a digit.
|
||||
// TODO: check when this is looking for ASCII alnum and when it should use unicode
|
||||
func isalnum(c byte) bool {
|
||||
return (c >= '0' && c <= '9') || isletter(c)
|
||||
}
|
||||
|
||||
// Replace tab characters with spaces, aligning to the next TAB_SIZE column.
|
||||
// always ends output with a newline
|
||||
func expandTabs(out *bytes.Buffer, line []byte, tabSize int) {
|
||||
// first, check for common cases: no tabs, or only tabs at beginning of line
|
||||
i, prefix := 0, 0
|
||||
slowcase := false
|
||||
for i = 0; i < len(line); i++ {
|
||||
if line[i] == '\t' {
|
||||
if prefix == i {
|
||||
prefix++
|
||||
} else {
|
||||
slowcase = true
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// no need to decode runes if all tabs are at the beginning of the line
|
||||
if !slowcase {
|
||||
for i = 0; i < prefix*tabSize; i++ {
|
||||
out.WriteByte(' ')
|
||||
}
|
||||
out.Write(line[prefix:])
|
||||
return
|
||||
}
|
||||
|
||||
// the slow case: we need to count runes to figure out how
|
||||
// many spaces to insert for each tab
|
||||
column := 0
|
||||
i = 0
|
||||
for i < len(line) {
|
||||
start := i
|
||||
for i < len(line) && line[i] != '\t' {
|
||||
_, size := utf8.DecodeRune(line[i:])
|
||||
i += size
|
||||
column++
|
||||
}
|
||||
|
||||
if i > start {
|
||||
out.Write(line[start:i])
|
||||
}
|
||||
|
||||
if i >= len(line) {
|
||||
break
|
||||
}
|
||||
|
||||
for {
|
||||
out.WriteByte(' ')
|
||||
column++
|
||||
if column%tabSize == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
i++
|
||||
}
|
||||
}
|
||||
|
||||
// Find if a line counts as indented or not.
|
||||
// Returns number of characters the indent is (0 = not indented).
|
||||
func isIndented(data []byte, indentSize int) int {
|
||||
if len(data) == 0 {
|
||||
return 0
|
||||
}
|
||||
if data[0] == '\t' {
|
||||
return 1
|
||||
}
|
||||
if len(data) < indentSize {
|
||||
return 0
|
||||
}
|
||||
for i := 0; i < indentSize; i++ {
|
||||
if data[i] != ' ' {
|
||||
return 0
|
||||
}
|
||||
}
|
||||
return indentSize
|
||||
}
|
||||
|
||||
// Create a url-safe slug for fragments
|
||||
func slugify(in []byte) []byte {
|
||||
if len(in) == 0 {
|
||||
return in
|
||||
}
|
||||
out := make([]byte, 0, len(in))
|
||||
sym := false
|
||||
|
||||
for _, ch := range in {
|
||||
if isalnum(ch) {
|
||||
sym = false
|
||||
out = append(out, ch)
|
||||
} else if sym {
|
||||
continue
|
||||
} else {
|
||||
out = append(out, '-')
|
||||
sym = true
|
||||
}
|
||||
}
|
||||
var a, b int
|
||||
var ch byte
|
||||
for a, ch = range out {
|
||||
if ch != '-' {
|
||||
break
|
||||
}
|
||||
}
|
||||
for b = len(out) - 1; b > 0; b-- {
|
||||
if out[b] != '-' {
|
||||
break
|
||||
}
|
||||
}
|
||||
return out[a : b+1]
|
||||
}
|
||||
|
|
@ -1,360 +0,0 @@
|
|||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
// NodeType specifies a type of a single node of a syntax tree. Usually one
|
||||
// node (and its type) corresponds to a single markdown feature, e.g. emphasis
|
||||
// or code block.
|
||||
type NodeType int
|
||||
|
||||
// Constants for identifying different types of nodes. See NodeType.
|
||||
const (
|
||||
Document NodeType = iota
|
||||
BlockQuote
|
||||
List
|
||||
Item
|
||||
Paragraph
|
||||
Heading
|
||||
HorizontalRule
|
||||
Emph
|
||||
Strong
|
||||
Del
|
||||
Link
|
||||
Image
|
||||
Text
|
||||
HTMLBlock
|
||||
CodeBlock
|
||||
Softbreak
|
||||
Hardbreak
|
||||
Code
|
||||
HTMLSpan
|
||||
Table
|
||||
TableCell
|
||||
TableHead
|
||||
TableBody
|
||||
TableRow
|
||||
)
|
||||
|
||||
var nodeTypeNames = []string{
|
||||
Document: "Document",
|
||||
BlockQuote: "BlockQuote",
|
||||
List: "List",
|
||||
Item: "Item",
|
||||
Paragraph: "Paragraph",
|
||||
Heading: "Heading",
|
||||
HorizontalRule: "HorizontalRule",
|
||||
Emph: "Emph",
|
||||
Strong: "Strong",
|
||||
Del: "Del",
|
||||
Link: "Link",
|
||||
Image: "Image",
|
||||
Text: "Text",
|
||||
HTMLBlock: "HTMLBlock",
|
||||
CodeBlock: "CodeBlock",
|
||||
Softbreak: "Softbreak",
|
||||
Hardbreak: "Hardbreak",
|
||||
Code: "Code",
|
||||
HTMLSpan: "HTMLSpan",
|
||||
Table: "Table",
|
||||
TableCell: "TableCell",
|
||||
TableHead: "TableHead",
|
||||
TableBody: "TableBody",
|
||||
TableRow: "TableRow",
|
||||
}
|
||||
|
||||
func (t NodeType) String() string {
|
||||
return nodeTypeNames[t]
|
||||
}
|
||||
|
||||
// ListData contains fields relevant to a List and Item node type.
|
||||
type ListData struct {
|
||||
ListFlags ListType
|
||||
Tight bool // Skip <p>s around list item data if true
|
||||
BulletChar byte // '*', '+' or '-' in bullet lists
|
||||
Delimiter byte // '.' or ')' after the number in ordered lists
|
||||
RefLink []byte // If not nil, turns this list item into a footnote item and triggers different rendering
|
||||
IsFootnotesList bool // This is a list of footnotes
|
||||
}
|
||||
|
||||
// LinkData contains fields relevant to a Link node type.
|
||||
type LinkData struct {
|
||||
Destination []byte // Destination is what goes into a href
|
||||
Title []byte // Title is the tooltip thing that goes in a title attribute
|
||||
NoteID int // NoteID contains a serial number of a footnote, zero if it's not a footnote
|
||||
Footnote *Node // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
|
||||
}
|
||||
|
||||
// CodeBlockData contains fields relevant to a CodeBlock node type.
|
||||
type CodeBlockData struct {
|
||||
IsFenced bool // Specifies whether it's a fenced code block or an indented one
|
||||
Info []byte // This holds the info string
|
||||
FenceChar byte
|
||||
FenceLength int
|
||||
FenceOffset int
|
||||
}
|
||||
|
||||
// TableCellData contains fields relevant to a TableCell node type.
|
||||
type TableCellData struct {
|
||||
IsHeader bool // This tells if it's under the header row
|
||||
Align CellAlignFlags // This holds the value for align attribute
|
||||
}
|
||||
|
||||
// HeadingData contains fields relevant to a Heading node type.
|
||||
type HeadingData struct {
|
||||
Level int // This holds the heading level number
|
||||
HeadingID string // This might hold heading ID, if present
|
||||
IsTitleblock bool // Specifies whether it's a title block
|
||||
}
|
||||
|
||||
// Node is a single element in the abstract syntax tree of the parsed document.
|
||||
// It holds connections to the structurally neighboring nodes and, for certain
|
||||
// types of nodes, additional information that might be needed when rendering.
|
||||
type Node struct {
|
||||
Type NodeType // Determines the type of the node
|
||||
Parent *Node // Points to the parent
|
||||
FirstChild *Node // Points to the first child, if any
|
||||
LastChild *Node // Points to the last child, if any
|
||||
Prev *Node // Previous sibling; nil if it's the first child
|
||||
Next *Node // Next sibling; nil if it's the last child
|
||||
|
||||
Literal []byte // Text contents of the leaf nodes
|
||||
|
||||
HeadingData // Populated if Type is Heading
|
||||
ListData // Populated if Type is List
|
||||
CodeBlockData // Populated if Type is CodeBlock
|
||||
LinkData // Populated if Type is Link
|
||||
TableCellData // Populated if Type is TableCell
|
||||
|
||||
content []byte // Markdown content of the block nodes
|
||||
open bool // Specifies an open block node that has not been finished to process yet
|
||||
}
|
||||
|
||||
// NewNode allocates a node of a specified type.
|
||||
func NewNode(typ NodeType) *Node {
|
||||
return &Node{
|
||||
Type: typ,
|
||||
open: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (n *Node) String() string {
|
||||
ellipsis := ""
|
||||
snippet := n.Literal
|
||||
if len(snippet) > 16 {
|
||||
snippet = snippet[:16]
|
||||
ellipsis = "..."
|
||||
}
|
||||
return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
|
||||
}
|
||||
|
||||
// Unlink removes node 'n' from the tree.
|
||||
// It panics if the node is nil.
|
||||
func (n *Node) Unlink() {
|
||||
if n.Prev != nil {
|
||||
n.Prev.Next = n.Next
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.FirstChild = n.Next
|
||||
}
|
||||
if n.Next != nil {
|
||||
n.Next.Prev = n.Prev
|
||||
} else if n.Parent != nil {
|
||||
n.Parent.LastChild = n.Prev
|
||||
}
|
||||
n.Parent = nil
|
||||
n.Next = nil
|
||||
n.Prev = nil
|
||||
}
|
||||
|
||||
// AppendChild adds a node 'child' as a child of 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) AppendChild(child *Node) {
|
||||
child.Unlink()
|
||||
child.Parent = n
|
||||
if n.LastChild != nil {
|
||||
n.LastChild.Next = child
|
||||
child.Prev = n.LastChild
|
||||
n.LastChild = child
|
||||
} else {
|
||||
n.FirstChild = child
|
||||
n.LastChild = child
|
||||
}
|
||||
}
|
||||
|
||||
// InsertBefore inserts 'sibling' immediately before 'n'.
|
||||
// It panics if either node is nil.
|
||||
func (n *Node) InsertBefore(sibling *Node) {
|
||||
sibling.Unlink()
|
||||
sibling.Prev = n.Prev
|
||||
if sibling.Prev != nil {
|
||||
sibling.Prev.Next = sibling
|
||||
}
|
||||
sibling.Next = n
|
||||
n.Prev = sibling
|
||||
sibling.Parent = n.Parent
|
||||
if sibling.Prev == nil {
|
||||
sibling.Parent.FirstChild = sibling
|
||||
}
|
||||
}
|
||||
|
||||
// IsContainer returns true if 'n' can contain children.
|
||||
func (n *Node) IsContainer() bool {
|
||||
switch n.Type {
|
||||
case Document:
|
||||
fallthrough
|
||||
case BlockQuote:
|
||||
fallthrough
|
||||
case List:
|
||||
fallthrough
|
||||
case Item:
|
||||
fallthrough
|
||||
case Paragraph:
|
||||
fallthrough
|
||||
case Heading:
|
||||
fallthrough
|
||||
case Emph:
|
||||
fallthrough
|
||||
case Strong:
|
||||
fallthrough
|
||||
case Del:
|
||||
fallthrough
|
||||
case Link:
|
||||
fallthrough
|
||||
case Image:
|
||||
fallthrough
|
||||
case Table:
|
||||
fallthrough
|
||||
case TableHead:
|
||||
fallthrough
|
||||
case TableBody:
|
||||
fallthrough
|
||||
case TableRow:
|
||||
fallthrough
|
||||
case TableCell:
|
||||
return true
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// IsLeaf returns true if 'n' is a leaf node.
|
||||
func (n *Node) IsLeaf() bool {
|
||||
return !n.IsContainer()
|
||||
}
|
||||
|
||||
func (n *Node) canContain(t NodeType) bool {
|
||||
if n.Type == List {
|
||||
return t == Item
|
||||
}
|
||||
if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
|
||||
return t != Item
|
||||
}
|
||||
if n.Type == Table {
|
||||
return t == TableHead || t == TableBody
|
||||
}
|
||||
if n.Type == TableHead || n.Type == TableBody {
|
||||
return t == TableRow
|
||||
}
|
||||
if n.Type == TableRow {
|
||||
return t == TableCell
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// WalkStatus allows NodeVisitor to have some control over the tree traversal.
|
||||
// It is returned from NodeVisitor and different values allow Node.Walk to
|
||||
// decide which node to go to next.
|
||||
type WalkStatus int
|
||||
|
||||
const (
|
||||
// GoToNext is the default traversal of every node.
|
||||
GoToNext WalkStatus = iota
|
||||
// SkipChildren tells walker to skip all children of current node.
|
||||
SkipChildren
|
||||
// Terminate tells walker to terminate the traversal.
|
||||
Terminate
|
||||
)
|
||||
|
||||
// NodeVisitor is a callback to be called when traversing the syntax tree.
|
||||
// Called twice for every node: once with entering=true when the branch is
|
||||
// first visited, then with entering=false after all the children are done.
|
||||
type NodeVisitor func(node *Node, entering bool) WalkStatus
|
||||
|
||||
// Walk is a convenience method that instantiates a walker and starts a
|
||||
// traversal of subtree rooted at n.
|
||||
func (n *Node) Walk(visitor NodeVisitor) {
|
||||
w := newNodeWalker(n)
|
||||
for w.current != nil {
|
||||
status := visitor(w.current, w.entering)
|
||||
switch status {
|
||||
case GoToNext:
|
||||
w.next()
|
||||
case SkipChildren:
|
||||
w.entering = false
|
||||
w.next()
|
||||
case Terminate:
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
type nodeWalker struct {
|
||||
current *Node
|
||||
root *Node
|
||||
entering bool
|
||||
}
|
||||
|
||||
func newNodeWalker(root *Node) *nodeWalker {
|
||||
return &nodeWalker{
|
||||
current: root,
|
||||
root: root,
|
||||
entering: true,
|
||||
}
|
||||
}
|
||||
|
||||
func (nw *nodeWalker) next() {
|
||||
if (!nw.current.IsContainer() || !nw.entering) && nw.current == nw.root {
|
||||
nw.current = nil
|
||||
return
|
||||
}
|
||||
if nw.entering && nw.current.IsContainer() {
|
||||
if nw.current.FirstChild != nil {
|
||||
nw.current = nw.current.FirstChild
|
||||
nw.entering = true
|
||||
} else {
|
||||
nw.entering = false
|
||||
}
|
||||
} else if nw.current.Next == nil {
|
||||
nw.current = nw.current.Parent
|
||||
nw.entering = false
|
||||
} else {
|
||||
nw.current = nw.current.Next
|
||||
nw.entering = true
|
||||
}
|
||||
}
|
||||
|
||||
func dump(ast *Node) {
|
||||
fmt.Println(dumpString(ast))
|
||||
}
|
||||
|
||||
func dumpR(ast *Node, depth int) string {
|
||||
if ast == nil {
|
||||
return ""
|
||||
}
|
||||
indent := bytes.Repeat([]byte("\t"), depth)
|
||||
content := ast.Literal
|
||||
if content == nil {
|
||||
content = ast.content
|
||||
}
|
||||
result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
|
||||
for n := ast.FirstChild; n != nil; n = n.Next {
|
||||
result += dumpR(n, depth+1)
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
func dumpString(ast *Node) string {
|
||||
return dumpR(ast, 0)
|
||||
}
|
||||
|
|
@ -1,457 +0,0 @@
|
|||
//
|
||||
// Blackfriday Markdown Processor
|
||||
// Available at http://github.com/russross/blackfriday
|
||||
//
|
||||
// Copyright © 2011 Russ Ross <russ@russross.com>.
|
||||
// Distributed under the Simplified BSD License.
|
||||
// See README.md for details.
|
||||
//
|
||||
|
||||
//
|
||||
//
|
||||
// SmartyPants rendering
|
||||
//
|
||||
//
|
||||
|
||||
package blackfriday
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"io"
|
||||
)
|
||||
|
||||
// SPRenderer is a struct containing state of a Smartypants renderer.
|
||||
type SPRenderer struct {
|
||||
inSingleQuote bool
|
||||
inDoubleQuote bool
|
||||
callbacks [256]smartCallback
|
||||
}
|
||||
|
||||
func wordBoundary(c byte) bool {
|
||||
return c == 0 || isspace(c) || ispunct(c)
|
||||
}
|
||||
|
||||
func tolower(c byte) byte {
|
||||
if c >= 'A' && c <= 'Z' {
|
||||
return c - 'A' + 'a'
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
func isdigit(c byte) bool {
|
||||
return c >= '0' && c <= '9'
|
||||
}
|
||||
|
||||
func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool, addNBSP bool) bool {
|
||||
// edge of the buffer is likely to be a tag that we don't get to see,
|
||||
// so we treat it like text sometimes
|
||||
|
||||
// enumerate all sixteen possibilities for (previousChar, nextChar)
|
||||
// each can be one of {0, space, punct, other}
|
||||
switch {
|
||||
case previousChar == 0 && nextChar == 0:
|
||||
// context is not any help here, so toggle
|
||||
*isOpen = !*isOpen
|
||||
case isspace(previousChar) && nextChar == 0:
|
||||
// [ "] might be [ "<code>foo...]
|
||||
*isOpen = true
|
||||
case ispunct(previousChar) && nextChar == 0:
|
||||
// [!"] hmm... could be [Run!"] or [("<code>...]
|
||||
*isOpen = false
|
||||
case /* isnormal(previousChar) && */ nextChar == 0:
|
||||
// [a"] is probably a close
|
||||
*isOpen = false
|
||||
case previousChar == 0 && isspace(nextChar):
|
||||
// [" ] might be [...foo</code>" ]
|
||||
*isOpen = false
|
||||
case isspace(previousChar) && isspace(nextChar):
|
||||
// [ " ] context is not any help here, so toggle
|
||||
*isOpen = !*isOpen
|
||||
case ispunct(previousChar) && isspace(nextChar):
|
||||
// [!" ] is probably a close
|
||||
*isOpen = false
|
||||
case /* isnormal(previousChar) && */ isspace(nextChar):
|
||||
// [a" ] this is one of the easy cases
|
||||
*isOpen = false
|
||||
case previousChar == 0 && ispunct(nextChar):
|
||||
// ["!] hmm... could be ["$1.95] or [</code>"!...]
|
||||
*isOpen = false
|
||||
case isspace(previousChar) && ispunct(nextChar):
|
||||
// [ "!] looks more like [ "$1.95]
|
||||
*isOpen = true
|
||||
case ispunct(previousChar) && ispunct(nextChar):
|
||||
// [!"!] context is not any help here, so toggle
|
||||
*isOpen = !*isOpen
|
||||
case /* isnormal(previousChar) && */ ispunct(nextChar):
|
||||
// [a"!] is probably a close
|
||||
*isOpen = false
|
||||
case previousChar == 0 /* && isnormal(nextChar) */ :
|
||||
// ["a] is probably an open
|
||||
*isOpen = true
|
||||
case isspace(previousChar) /* && isnormal(nextChar) */ :
|
||||
// [ "a] this is one of the easy cases
|
||||
*isOpen = true
|
||||
case ispunct(previousChar) /* && isnormal(nextChar) */ :
|
||||
// [!"a] is probably an open
|
||||
*isOpen = true
|
||||
default:
|
||||
// [a'b] maybe a contraction?
|
||||
*isOpen = false
|
||||
}
|
||||
|
||||
// Note that with the limited lookahead, this non-breaking
|
||||
// space will also be appended to single double quotes.
|
||||
if addNBSP && !*isOpen {
|
||||
out.WriteString(" ")
|
||||
}
|
||||
|
||||
out.WriteByte('&')
|
||||
if *isOpen {
|
||||
out.WriteByte('l')
|
||||
} else {
|
||||
out.WriteByte('r')
|
||||
}
|
||||
out.WriteByte(quote)
|
||||
out.WriteString("quo;")
|
||||
|
||||
if addNBSP && *isOpen {
|
||||
out.WriteString(" ")
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 {
|
||||
t1 := tolower(text[1])
|
||||
|
||||
if t1 == '\'' {
|
||||
nextChar := byte(0)
|
||||
if len(text) >= 3 {
|
||||
nextChar = text[2]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
|
||||
out.WriteString("’")
|
||||
return 0
|
||||
}
|
||||
|
||||
if len(text) >= 3 {
|
||||
t2 := tolower(text[2])
|
||||
|
||||
if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
|
||||
(len(text) < 4 || wordBoundary(text[3])) {
|
||||
out.WriteString("’")
|
||||
return 0
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
nextChar := byte(0)
|
||||
if len(text) > 1 {
|
||||
nextChar = text[1]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) {
|
||||
return 0
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 {
|
||||
t1 := tolower(text[1])
|
||||
t2 := tolower(text[2])
|
||||
|
||||
if t1 == 'c' && t2 == ')' {
|
||||
out.WriteString("©")
|
||||
return 2
|
||||
}
|
||||
|
||||
if t1 == 'r' && t2 == ')' {
|
||||
out.WriteString("®")
|
||||
return 2
|
||||
}
|
||||
|
||||
if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
|
||||
out.WriteString("™")
|
||||
return 3
|
||||
}
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 {
|
||||
if text[1] == '-' {
|
||||
out.WriteString("—")
|
||||
return 1
|
||||
}
|
||||
|
||||
if wordBoundary(previousChar) && wordBoundary(text[1]) {
|
||||
out.WriteString("–")
|
||||
return 0
|
||||
}
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
|
||||
out.WriteString("—")
|
||||
return 2
|
||||
}
|
||||
if len(text) >= 2 && text[1] == '-' {
|
||||
out.WriteString("–")
|
||||
return 1
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int {
|
||||
if bytes.HasPrefix(text, []byte(""")) {
|
||||
nextChar := byte(0)
|
||||
if len(text) >= 7 {
|
||||
nextChar = text[6]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) {
|
||||
return 5
|
||||
}
|
||||
}
|
||||
|
||||
if bytes.HasPrefix(text, []byte("�")) {
|
||||
return 3
|
||||
}
|
||||
|
||||
out.WriteByte('&')
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int {
|
||||
var quote byte = 'd'
|
||||
if angledQuotes {
|
||||
quote = 'a'
|
||||
}
|
||||
|
||||
return func(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartAmpVariant(out, previousChar, text, quote, addNBSP)
|
||||
}
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
|
||||
out.WriteString("…")
|
||||
return 2
|
||||
}
|
||||
|
||||
if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
|
||||
out.WriteString("…")
|
||||
return 4
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if len(text) >= 2 && text[1] == '`' {
|
||||
nextChar := byte(0)
|
||||
if len(text) >= 3 {
|
||||
nextChar = text[2]
|
||||
}
|
||||
if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
|
||||
return 1
|
||||
}
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
|
||||
// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
|
||||
// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
|
||||
// and avoid changing dates like 1/23/2005 into fractions.
|
||||
numEnd := 0
|
||||
for len(text) > numEnd && isdigit(text[numEnd]) {
|
||||
numEnd++
|
||||
}
|
||||
if numEnd == 0 {
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
denStart := numEnd + 1
|
||||
if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
|
||||
denStart = numEnd + 3
|
||||
} else if len(text) < numEnd+2 || text[numEnd] != '/' {
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
denEnd := denStart
|
||||
for len(text) > denEnd && isdigit(text[denEnd]) {
|
||||
denEnd++
|
||||
}
|
||||
if denEnd == denStart {
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
|
||||
out.WriteString("<sup>")
|
||||
out.Write(text[:numEnd])
|
||||
out.WriteString("</sup>⁄<sub>")
|
||||
out.Write(text[denStart:denEnd])
|
||||
out.WriteString("</sub>")
|
||||
return denEnd - 1
|
||||
}
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
|
||||
if text[0] == '1' && text[1] == '/' && text[2] == '2' {
|
||||
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
|
||||
out.WriteString("½")
|
||||
return 2
|
||||
}
|
||||
}
|
||||
|
||||
if text[0] == '1' && text[1] == '/' && text[2] == '4' {
|
||||
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
|
||||
out.WriteString("¼")
|
||||
return 2
|
||||
}
|
||||
}
|
||||
|
||||
if text[0] == '3' && text[1] == '/' && text[2] == '4' {
|
||||
if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
|
||||
out.WriteString("¾")
|
||||
return 2
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
out.WriteByte(text[0])
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int {
|
||||
nextChar := byte(0)
|
||||
if len(text) > 1 {
|
||||
nextChar = text[1]
|
||||
}
|
||||
if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) {
|
||||
out.WriteString(""")
|
||||
}
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartDoubleQuoteVariant(out, previousChar, text, 'd')
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
return r.smartDoubleQuoteVariant(out, previousChar, text, 'a')
|
||||
}
|
||||
|
||||
func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int {
|
||||
i := 0
|
||||
|
||||
for i < len(text) && text[i] != '>' {
|
||||
i++
|
||||
}
|
||||
|
||||
out.Write(text[:i+1])
|
||||
return i
|
||||
}
|
||||
|
||||
type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int
|
||||
|
||||
// NewSmartypantsRenderer constructs a Smartypants renderer object.
|
||||
func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer {
|
||||
var (
|
||||
r SPRenderer
|
||||
|
||||
smartAmpAngled = r.smartAmp(true, false)
|
||||
smartAmpAngledNBSP = r.smartAmp(true, true)
|
||||
smartAmpRegular = r.smartAmp(false, false)
|
||||
smartAmpRegularNBSP = r.smartAmp(false, true)
|
||||
|
||||
addNBSP = flags&SmartypantsQuotesNBSP != 0
|
||||
)
|
||||
|
||||
if flags&SmartypantsAngledQuotes == 0 {
|
||||
r.callbacks['"'] = r.smartDoubleQuote
|
||||
if !addNBSP {
|
||||
r.callbacks['&'] = smartAmpRegular
|
||||
} else {
|
||||
r.callbacks['&'] = smartAmpRegularNBSP
|
||||
}
|
||||
} else {
|
||||
r.callbacks['"'] = r.smartAngledDoubleQuote
|
||||
if !addNBSP {
|
||||
r.callbacks['&'] = smartAmpAngled
|
||||
} else {
|
||||
r.callbacks['&'] = smartAmpAngledNBSP
|
||||
}
|
||||
}
|
||||
r.callbacks['\''] = r.smartSingleQuote
|
||||
r.callbacks['('] = r.smartParens
|
||||
if flags&SmartypantsDashes != 0 {
|
||||
if flags&SmartypantsLatexDashes == 0 {
|
||||
r.callbacks['-'] = r.smartDash
|
||||
} else {
|
||||
r.callbacks['-'] = r.smartDashLatex
|
||||
}
|
||||
}
|
||||
r.callbacks['.'] = r.smartPeriod
|
||||
if flags&SmartypantsFractions == 0 {
|
||||
r.callbacks['1'] = r.smartNumber
|
||||
r.callbacks['3'] = r.smartNumber
|
||||
} else {
|
||||
for ch := '1'; ch <= '9'; ch++ {
|
||||
r.callbacks[ch] = r.smartNumberGeneric
|
||||
}
|
||||
}
|
||||
r.callbacks['<'] = r.smartLeftAngle
|
||||
r.callbacks['`'] = r.smartBacktick
|
||||
return &r
|
||||
}
|
||||
|
||||
// Process is the entry point of the Smartypants renderer.
|
||||
func (r *SPRenderer) Process(w io.Writer, text []byte) {
|
||||
mark := 0
|
||||
for i := 0; i < len(text); i++ {
|
||||
if action := r.callbacks[text[i]]; action != nil {
|
||||
if i > mark {
|
||||
w.Write(text[mark:i])
|
||||
}
|
||||
previousChar := byte(0)
|
||||
if i > 0 {
|
||||
previousChar = text[i-1]
|
||||
}
|
||||
var tmp bytes.Buffer
|
||||
i += action(&tmp, previousChar, text[i:])
|
||||
w.Write(tmp.Bytes())
|
||||
mark = i + 1
|
||||
}
|
||||
}
|
||||
if mark < len(text) {
|
||||
w.Write(text[mark:])
|
||||
}
|
||||
}
|
||||
|
|
@ -1,12 +0,0 @@
|
|||
# Documentation generation
|
||||
|
||||
- [Man page docs](./man_docs.md)
|
||||
- [Markdown docs](./md_docs.md)
|
||||
- [Rest docs](./rest_docs.md)
|
||||
- [Yaml docs](./yaml_docs.md)
|
||||
|
||||
## Options
|
||||
### `DisableAutoGenTag`
|
||||
You may set `cmd.DisableAutoGenTag = true`
|
||||
to _entirely_ remove the auto generated string "Auto generated by spf13/cobra..."
|
||||
from any documentation source.
|
||||
|
|
@ -1,245 +0,0 @@
|
|||
// Copyright 2015 Red Hat Inc. All rights reserved.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package doc
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/cpuguy83/go-md2man/v2/md2man"
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/pflag"
|
||||
)
|
||||
|
||||
// GenManTree will generate a man page for this command and all descendants
|
||||
// in the directory given. The header may be nil. This function may not work
|
||||
// correctly if your command names have `-` in them. If you have `cmd` with two
|
||||
// subcmds, `sub` and `sub-third`, and `sub` has a subcommand called `third`
|
||||
// it is undefined which help output will be in the file `cmd-sub-third.1`.
|
||||
func GenManTree(cmd *cobra.Command, header *GenManHeader, dir string) error {
|
||||
return GenManTreeFromOpts(cmd, GenManTreeOptions{
|
||||
Header: header,
|
||||
Path: dir,
|
||||
CommandSeparator: "-",
|
||||
})
|
||||
}
|
||||
|
||||
// GenManTreeFromOpts generates a man page for the command and all descendants.
|
||||
// The pages are written to the opts.Path directory.
|
||||
func GenManTreeFromOpts(cmd *cobra.Command, opts GenManTreeOptions) error {
|
||||
header := opts.Header
|
||||
if header == nil {
|
||||
header = &GenManHeader{}
|
||||
}
|
||||
for _, c := range cmd.Commands() {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
if err := GenManTreeFromOpts(c, opts); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
section := "1"
|
||||
if header.Section != "" {
|
||||
section = header.Section
|
||||
}
|
||||
|
||||
separator := "_"
|
||||
if opts.CommandSeparator != "" {
|
||||
separator = opts.CommandSeparator
|
||||
}
|
||||
basename := strings.Replace(cmd.CommandPath(), " ", separator, -1)
|
||||
filename := filepath.Join(opts.Path, basename+"."+section)
|
||||
f, err := os.Create(filename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
headerCopy := *header
|
||||
return GenMan(cmd, &headerCopy, f)
|
||||
}
|
||||
|
||||
// GenManTreeOptions is the options for generating the man pages.
|
||||
// Used only in GenManTreeFromOpts.
|
||||
type GenManTreeOptions struct {
|
||||
Header *GenManHeader
|
||||
Path string
|
||||
CommandSeparator string
|
||||
}
|
||||
|
||||
// GenManHeader is a lot like the .TH header at the start of man pages. These
|
||||
// include the title, section, date, source, and manual. We will use the
|
||||
// current time if Date is unset and will use "Auto generated by spf13/cobra"
|
||||
// if the Source is unset.
|
||||
type GenManHeader struct {
|
||||
Title string
|
||||
Section string
|
||||
Date *time.Time
|
||||
date string
|
||||
Source string
|
||||
Manual string
|
||||
}
|
||||
|
||||
// GenMan will generate a man page for the given command and write it to
|
||||
// w. The header argument may be nil, however obviously w may not.
|
||||
func GenMan(cmd *cobra.Command, header *GenManHeader, w io.Writer) error {
|
||||
if header == nil {
|
||||
header = &GenManHeader{}
|
||||
}
|
||||
if err := fillHeader(header, cmd.CommandPath(), cmd.DisableAutoGenTag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
b := genMan(cmd, header)
|
||||
_, err := w.Write(md2man.Render(b))
|
||||
return err
|
||||
}
|
||||
|
||||
func fillHeader(header *GenManHeader, name string, disableAutoGen bool) error {
|
||||
if header.Title == "" {
|
||||
header.Title = strings.ToUpper(strings.Replace(name, " ", "\\-", -1))
|
||||
}
|
||||
if header.Section == "" {
|
||||
header.Section = "1"
|
||||
}
|
||||
if header.Date == nil {
|
||||
now := time.Now()
|
||||
if epoch := os.Getenv("SOURCE_DATE_EPOCH"); epoch != "" {
|
||||
unixEpoch, err := strconv.ParseInt(epoch, 10, 64)
|
||||
if err != nil {
|
||||
return fmt.Errorf("invalid SOURCE_DATE_EPOCH: %v", err)
|
||||
}
|
||||
now = time.Unix(unixEpoch, 0)
|
||||
}
|
||||
header.Date = &now
|
||||
}
|
||||
header.date = (*header.Date).Format("Jan 2006")
|
||||
if header.Source == "" && !disableAutoGen {
|
||||
header.Source = "Auto generated by spf13/cobra"
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func manPreamble(buf io.StringWriter, header *GenManHeader, cmd *cobra.Command, dashedName string) {
|
||||
description := cmd.Long
|
||||
if len(description) == 0 {
|
||||
description = cmd.Short
|
||||
}
|
||||
|
||||
cobra.WriteStringAndCheck(buf, fmt.Sprintf(`%% "%s" "%s" "%s" "%s" "%s"
|
||||
# NAME
|
||||
`, header.Title, header.Section, header.date, header.Source, header.Manual))
|
||||
cobra.WriteStringAndCheck(buf, fmt.Sprintf("%s \\- %s\n\n", dashedName, cmd.Short))
|
||||
cobra.WriteStringAndCheck(buf, "# SYNOPSIS\n")
|
||||
cobra.WriteStringAndCheck(buf, fmt.Sprintf("**%s**\n\n", cmd.UseLine()))
|
||||
cobra.WriteStringAndCheck(buf, "# DESCRIPTION\n")
|
||||
cobra.WriteStringAndCheck(buf, description+"\n\n")
|
||||
}
|
||||
|
||||
func manPrintFlags(buf io.StringWriter, flags *pflag.FlagSet) {
|
||||
flags.VisitAll(func(flag *pflag.Flag) {
|
||||
if len(flag.Deprecated) > 0 || flag.Hidden {
|
||||
return
|
||||
}
|
||||
format := ""
|
||||
if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 {
|
||||
format = fmt.Sprintf("**-%s**, **--%s**", flag.Shorthand, flag.Name)
|
||||
} else {
|
||||
format = fmt.Sprintf("**--%s**", flag.Name)
|
||||
}
|
||||
if len(flag.NoOptDefVal) > 0 {
|
||||
format += "["
|
||||
}
|
||||
if flag.Value.Type() == "string" {
|
||||
// put quotes on the value
|
||||
format += "=%q"
|
||||
} else {
|
||||
format += "=%s"
|
||||
}
|
||||
if len(flag.NoOptDefVal) > 0 {
|
||||
format += "]"
|
||||
}
|
||||
format += "\n\t%s\n\n"
|
||||
cobra.WriteStringAndCheck(buf, fmt.Sprintf(format, flag.DefValue, flag.Usage))
|
||||
})
|
||||
}
|
||||
|
||||
func manPrintOptions(buf io.StringWriter, command *cobra.Command) {
|
||||
flags := command.NonInheritedFlags()
|
||||
if flags.HasAvailableFlags() {
|
||||
cobra.WriteStringAndCheck(buf, "# OPTIONS\n")
|
||||
manPrintFlags(buf, flags)
|
||||
cobra.WriteStringAndCheck(buf, "\n")
|
||||
}
|
||||
flags = command.InheritedFlags()
|
||||
if flags.HasAvailableFlags() {
|
||||
cobra.WriteStringAndCheck(buf, "# OPTIONS INHERITED FROM PARENT COMMANDS\n")
|
||||
manPrintFlags(buf, flags)
|
||||
cobra.WriteStringAndCheck(buf, "\n")
|
||||
}
|
||||
}
|
||||
|
||||
func genMan(cmd *cobra.Command, header *GenManHeader) []byte {
|
||||
cmd.InitDefaultHelpCmd()
|
||||
cmd.InitDefaultHelpFlag()
|
||||
|
||||
// something like `rootcmd-subcmd1-subcmd2`
|
||||
dashCommandName := strings.Replace(cmd.CommandPath(), " ", "-", -1)
|
||||
|
||||
buf := new(bytes.Buffer)
|
||||
|
||||
manPreamble(buf, header, cmd, dashCommandName)
|
||||
manPrintOptions(buf, cmd)
|
||||
if len(cmd.Example) > 0 {
|
||||
buf.WriteString("# EXAMPLE\n")
|
||||
buf.WriteString(fmt.Sprintf("```\n%s\n```\n", cmd.Example))
|
||||
}
|
||||
if hasSeeAlso(cmd) {
|
||||
buf.WriteString("# SEE ALSO\n")
|
||||
seealsos := make([]string, 0)
|
||||
if cmd.HasParent() {
|
||||
parentPath := cmd.Parent().CommandPath()
|
||||
dashParentPath := strings.Replace(parentPath, " ", "-", -1)
|
||||
seealso := fmt.Sprintf("**%s(%s)**", dashParentPath, header.Section)
|
||||
seealsos = append(seealsos, seealso)
|
||||
cmd.VisitParents(func(c *cobra.Command) {
|
||||
if c.DisableAutoGenTag {
|
||||
cmd.DisableAutoGenTag = c.DisableAutoGenTag
|
||||
}
|
||||
})
|
||||
}
|
||||
children := cmd.Commands()
|
||||
sort.Sort(byName(children))
|
||||
for _, c := range children {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
seealso := fmt.Sprintf("**%s-%s(%s)**", dashCommandName, c.Name(), header.Section)
|
||||
seealsos = append(seealsos, seealso)
|
||||
}
|
||||
buf.WriteString(strings.Join(seealsos, ", ") + "\n")
|
||||
}
|
||||
if !cmd.DisableAutoGenTag {
|
||||
buf.WriteString(fmt.Sprintf("# HISTORY\n%s Auto generated by spf13/cobra\n", header.Date.Format("2-Jan-2006")))
|
||||
}
|
||||
return buf.Bytes()
|
||||
}
|
||||
|
|
@ -1,31 +0,0 @@
|
|||
# Generating Man Pages For Your Own cobra.Command
|
||||
|
||||
Generating man pages from a cobra command is incredibly easy. An example is as follows:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
cmd := &cobra.Command{
|
||||
Use: "test",
|
||||
Short: "my test program",
|
||||
}
|
||||
header := &doc.GenManHeader{
|
||||
Title: "MINE",
|
||||
Section: "3",
|
||||
}
|
||||
err := doc.GenManTree(cmd, header, "/tmp")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
That will get you a man page `/tmp/test.3`
|
||||
|
|
@ -1,155 +0,0 @@
|
|||
//Copyright 2015 Red Hat Inc. All rights reserved.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package doc
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
)
|
||||
|
||||
func printOptions(buf *bytes.Buffer, cmd *cobra.Command, name string) error {
|
||||
flags := cmd.NonInheritedFlags()
|
||||
flags.SetOutput(buf)
|
||||
if flags.HasAvailableFlags() {
|
||||
buf.WriteString("### Options\n\n```\n")
|
||||
flags.PrintDefaults()
|
||||
buf.WriteString("```\n\n")
|
||||
}
|
||||
|
||||
parentFlags := cmd.InheritedFlags()
|
||||
parentFlags.SetOutput(buf)
|
||||
if parentFlags.HasAvailableFlags() {
|
||||
buf.WriteString("### Options inherited from parent commands\n\n```\n")
|
||||
parentFlags.PrintDefaults()
|
||||
buf.WriteString("```\n\n")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// GenMarkdown creates markdown output.
|
||||
func GenMarkdown(cmd *cobra.Command, w io.Writer) error {
|
||||
return GenMarkdownCustom(cmd, w, func(s string) string { return s })
|
||||
}
|
||||
|
||||
// GenMarkdownCustom creates custom markdown output.
|
||||
func GenMarkdownCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) string) error {
|
||||
cmd.InitDefaultHelpCmd()
|
||||
cmd.InitDefaultHelpFlag()
|
||||
|
||||
buf := new(bytes.Buffer)
|
||||
name := cmd.CommandPath()
|
||||
|
||||
buf.WriteString("## " + name + "\n\n")
|
||||
buf.WriteString(cmd.Short + "\n\n")
|
||||
if len(cmd.Long) > 0 {
|
||||
buf.WriteString("### Synopsis\n\n")
|
||||
buf.WriteString(cmd.Long + "\n\n")
|
||||
}
|
||||
|
||||
if cmd.Runnable() {
|
||||
buf.WriteString(fmt.Sprintf("```\n%s\n```\n\n", cmd.UseLine()))
|
||||
}
|
||||
|
||||
if len(cmd.Example) > 0 {
|
||||
buf.WriteString("### Examples\n\n")
|
||||
buf.WriteString(fmt.Sprintf("```\n%s\n```\n\n", cmd.Example))
|
||||
}
|
||||
|
||||
if err := printOptions(buf, cmd, name); err != nil {
|
||||
return err
|
||||
}
|
||||
if hasSeeAlso(cmd) {
|
||||
buf.WriteString("### SEE ALSO\n\n")
|
||||
if cmd.HasParent() {
|
||||
parent := cmd.Parent()
|
||||
pname := parent.CommandPath()
|
||||
link := pname + ".md"
|
||||
link = strings.Replace(link, " ", "_", -1)
|
||||
buf.WriteString(fmt.Sprintf("* [%s](%s)\t - %s\n", pname, linkHandler(link), parent.Short))
|
||||
cmd.VisitParents(func(c *cobra.Command) {
|
||||
if c.DisableAutoGenTag {
|
||||
cmd.DisableAutoGenTag = c.DisableAutoGenTag
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
children := cmd.Commands()
|
||||
sort.Sort(byName(children))
|
||||
|
||||
for _, child := range children {
|
||||
if !child.IsAvailableCommand() || child.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
cname := name + " " + child.Name()
|
||||
link := cname + ".md"
|
||||
link = strings.Replace(link, " ", "_", -1)
|
||||
buf.WriteString(fmt.Sprintf("* [%s](%s)\t - %s\n", cname, linkHandler(link), child.Short))
|
||||
}
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
if !cmd.DisableAutoGenTag {
|
||||
buf.WriteString("###### Auto generated by spf13/cobra on " + time.Now().Format("2-Jan-2006") + "\n")
|
||||
}
|
||||
_, err := buf.WriteTo(w)
|
||||
return err
|
||||
}
|
||||
|
||||
// GenMarkdownTree will generate a markdown page for this command and all
|
||||
// descendants in the directory given. The header may be nil.
|
||||
// This function may not work correctly if your command names have `-` in them.
|
||||
// If you have `cmd` with two subcmds, `sub` and `sub-third`,
|
||||
// and `sub` has a subcommand called `third`, it is undefined which
|
||||
// help output will be in the file `cmd-sub-third.1`.
|
||||
func GenMarkdownTree(cmd *cobra.Command, dir string) error {
|
||||
identity := func(s string) string { return s }
|
||||
emptyStr := func(s string) string { return "" }
|
||||
return GenMarkdownTreeCustom(cmd, dir, emptyStr, identity)
|
||||
}
|
||||
|
||||
// GenMarkdownTreeCustom is the the same as GenMarkdownTree, but
|
||||
// with custom filePrepender and linkHandler.
|
||||
func GenMarkdownTreeCustom(cmd *cobra.Command, dir string, filePrepender, linkHandler func(string) string) error {
|
||||
for _, c := range cmd.Commands() {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
if err := GenMarkdownTreeCustom(c, dir, filePrepender, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".md"
|
||||
filename := filepath.Join(dir, basename)
|
||||
f, err := os.Create(filename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
if _, err := io.WriteString(f, filePrepender(filename)); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := GenMarkdownCustom(cmd, f, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -1,115 +0,0 @@
|
|||
# Generating Markdown Docs For Your Own cobra.Command
|
||||
|
||||
Generating Markdown pages from a cobra command is incredibly easy. An example is as follows:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
cmd := &cobra.Command{
|
||||
Use: "test",
|
||||
Short: "my test program",
|
||||
}
|
||||
err := doc.GenMarkdownTree(cmd, "/tmp")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
That will get you a Markdown document `/tmp/test.md`
|
||||
|
||||
## Generate markdown docs for the entire command tree
|
||||
|
||||
This program can actually generate docs for the kubectl command in the kubernetes project
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
|
||||
"k8s.io/kubernetes/pkg/kubectl/cmd"
|
||||
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
|
||||
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
kubectl := cmd.NewKubectlCommand(cmdutil.NewFactory(nil), os.Stdin, ioutil.Discard, ioutil.Discard)
|
||||
err := doc.GenMarkdownTree(kubectl, "./")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
This will generate a whole series of files, one for each command in the tree, in the directory specified (in this case "./")
|
||||
|
||||
## Generate markdown docs for a single command
|
||||
|
||||
You may wish to have more control over the output, or only generate for a single command, instead of the entire command tree. If this is the case you may prefer to `GenMarkdown` instead of `GenMarkdownTree`
|
||||
|
||||
```go
|
||||
out := new(bytes.Buffer)
|
||||
err := doc.GenMarkdown(cmd, out)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
```
|
||||
|
||||
This will write the markdown doc for ONLY "cmd" into the out, buffer.
|
||||
|
||||
## Customize the output
|
||||
|
||||
Both `GenMarkdown` and `GenMarkdownTree` have alternate versions with callbacks to get some control of the output:
|
||||
|
||||
```go
|
||||
func GenMarkdownTreeCustom(cmd *Command, dir string, filePrepender, linkHandler func(string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
func GenMarkdownCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
The `filePrepender` will prepend the return value given the full filepath to the rendered Markdown file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/):
|
||||
|
||||
```go
|
||||
const fmTemplate = `---
|
||||
date: %s
|
||||
title: "%s"
|
||||
slug: %s
|
||||
url: %s
|
||||
---
|
||||
`
|
||||
|
||||
filePrepender := func(filename string) string {
|
||||
now := time.Now().Format(time.RFC3339)
|
||||
name := filepath.Base(filename)
|
||||
base := strings.TrimSuffix(name, path.Ext(name))
|
||||
url := "/commands/" + strings.ToLower(base) + "/"
|
||||
return fmt.Sprintf(fmTemplate, now, strings.Replace(base, "_", " ", -1), base, url)
|
||||
}
|
||||
```
|
||||
|
||||
The `linkHandler` can be used to customize the rendered internal links to the commands, given a filename:
|
||||
|
||||
```go
|
||||
linkHandler := func(name string) string {
|
||||
base := strings.TrimSuffix(name, path.Ext(name))
|
||||
return "/commands/" + strings.ToLower(base) + "/"
|
||||
}
|
||||
```
|
||||
|
|
@ -1,185 +0,0 @@
|
|||
//Copyright 2015 Red Hat Inc. All rights reserved.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package doc
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
"strings"
|
||||
"time"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
)
|
||||
|
||||
func printOptionsReST(buf *bytes.Buffer, cmd *cobra.Command, name string) error {
|
||||
flags := cmd.NonInheritedFlags()
|
||||
flags.SetOutput(buf)
|
||||
if flags.HasAvailableFlags() {
|
||||
buf.WriteString("Options\n")
|
||||
buf.WriteString("~~~~~~~\n\n::\n\n")
|
||||
flags.PrintDefaults()
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
|
||||
parentFlags := cmd.InheritedFlags()
|
||||
parentFlags.SetOutput(buf)
|
||||
if parentFlags.HasAvailableFlags() {
|
||||
buf.WriteString("Options inherited from parent commands\n")
|
||||
buf.WriteString("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\n::\n\n")
|
||||
parentFlags.PrintDefaults()
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// linkHandler for default ReST hyperlink markup
|
||||
func defaultLinkHandler(name, ref string) string {
|
||||
return fmt.Sprintf("`%s <%s.rst>`_", name, ref)
|
||||
}
|
||||
|
||||
// GenReST creates reStructured Text output.
|
||||
func GenReST(cmd *cobra.Command, w io.Writer) error {
|
||||
return GenReSTCustom(cmd, w, defaultLinkHandler)
|
||||
}
|
||||
|
||||
// GenReSTCustom creates custom reStructured Text output.
|
||||
func GenReSTCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string, string) string) error {
|
||||
cmd.InitDefaultHelpCmd()
|
||||
cmd.InitDefaultHelpFlag()
|
||||
|
||||
buf := new(bytes.Buffer)
|
||||
name := cmd.CommandPath()
|
||||
|
||||
short := cmd.Short
|
||||
long := cmd.Long
|
||||
if len(long) == 0 {
|
||||
long = short
|
||||
}
|
||||
ref := strings.Replace(name, " ", "_", -1)
|
||||
|
||||
buf.WriteString(".. _" + ref + ":\n\n")
|
||||
buf.WriteString(name + "\n")
|
||||
buf.WriteString(strings.Repeat("-", len(name)) + "\n\n")
|
||||
buf.WriteString(short + "\n\n")
|
||||
buf.WriteString("Synopsis\n")
|
||||
buf.WriteString("~~~~~~~~\n\n")
|
||||
buf.WriteString("\n" + long + "\n\n")
|
||||
|
||||
if cmd.Runnable() {
|
||||
buf.WriteString(fmt.Sprintf("::\n\n %s\n\n", cmd.UseLine()))
|
||||
}
|
||||
|
||||
if len(cmd.Example) > 0 {
|
||||
buf.WriteString("Examples\n")
|
||||
buf.WriteString("~~~~~~~~\n\n")
|
||||
buf.WriteString(fmt.Sprintf("::\n\n%s\n\n", indentString(cmd.Example, " ")))
|
||||
}
|
||||
|
||||
if err := printOptionsReST(buf, cmd, name); err != nil {
|
||||
return err
|
||||
}
|
||||
if hasSeeAlso(cmd) {
|
||||
buf.WriteString("SEE ALSO\n")
|
||||
buf.WriteString("~~~~~~~~\n\n")
|
||||
if cmd.HasParent() {
|
||||
parent := cmd.Parent()
|
||||
pname := parent.CommandPath()
|
||||
ref = strings.Replace(pname, " ", "_", -1)
|
||||
buf.WriteString(fmt.Sprintf("* %s \t - %s\n", linkHandler(pname, ref), parent.Short))
|
||||
cmd.VisitParents(func(c *cobra.Command) {
|
||||
if c.DisableAutoGenTag {
|
||||
cmd.DisableAutoGenTag = c.DisableAutoGenTag
|
||||
}
|
||||
})
|
||||
}
|
||||
|
||||
children := cmd.Commands()
|
||||
sort.Sort(byName(children))
|
||||
|
||||
for _, child := range children {
|
||||
if !child.IsAvailableCommand() || child.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
cname := name + " " + child.Name()
|
||||
ref = strings.Replace(cname, " ", "_", -1)
|
||||
buf.WriteString(fmt.Sprintf("* %s \t - %s\n", linkHandler(cname, ref), child.Short))
|
||||
}
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
if !cmd.DisableAutoGenTag {
|
||||
buf.WriteString("*Auto generated by spf13/cobra on " + time.Now().Format("2-Jan-2006") + "*\n")
|
||||
}
|
||||
_, err := buf.WriteTo(w)
|
||||
return err
|
||||
}
|
||||
|
||||
// GenReSTTree will generate a ReST page for this command and all
|
||||
// descendants in the directory given.
|
||||
// This function may not work correctly if your command names have `-` in them.
|
||||
// If you have `cmd` with two subcmds, `sub` and `sub-third`,
|
||||
// and `sub` has a subcommand called `third`, it is undefined which
|
||||
// help output will be in the file `cmd-sub-third.1`.
|
||||
func GenReSTTree(cmd *cobra.Command, dir string) error {
|
||||
emptyStr := func(s string) string { return "" }
|
||||
return GenReSTTreeCustom(cmd, dir, emptyStr, defaultLinkHandler)
|
||||
}
|
||||
|
||||
// GenReSTTreeCustom is the the same as GenReSTTree, but
|
||||
// with custom filePrepender and linkHandler.
|
||||
func GenReSTTreeCustom(cmd *cobra.Command, dir string, filePrepender func(string) string, linkHandler func(string, string) string) error {
|
||||
for _, c := range cmd.Commands() {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
if err := GenReSTTreeCustom(c, dir, filePrepender, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".rst"
|
||||
filename := filepath.Join(dir, basename)
|
||||
f, err := os.Create(filename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
if _, err := io.WriteString(f, filePrepender(filename)); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := GenReSTCustom(cmd, f, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// adapted from: https://github.com/kr/text/blob/main/indent.go
|
||||
func indentString(s, p string) string {
|
||||
var res []byte
|
||||
b := []byte(s)
|
||||
prefix := []byte(p)
|
||||
bol := true
|
||||
for _, c := range b {
|
||||
if bol && c != '\n' {
|
||||
res = append(res, prefix...)
|
||||
}
|
||||
res = append(res, c)
|
||||
bol = c == '\n'
|
||||
}
|
||||
return string(res)
|
||||
}
|
||||
|
|
@ -1,114 +0,0 @@
|
|||
# Generating ReStructured Text Docs For Your Own cobra.Command
|
||||
|
||||
Generating ReST pages from a cobra command is incredibly easy. An example is as follows:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
cmd := &cobra.Command{
|
||||
Use: "test",
|
||||
Short: "my test program",
|
||||
}
|
||||
err := doc.GenReSTTree(cmd, "/tmp")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
That will get you a ReST document `/tmp/test.rst`
|
||||
|
||||
## Generate ReST docs for the entire command tree
|
||||
|
||||
This program can actually generate docs for the kubectl command in the kubernetes project
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
|
||||
"k8s.io/kubernetes/pkg/kubectl/cmd"
|
||||
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
|
||||
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
kubectl := cmd.NewKubectlCommand(cmdutil.NewFactory(nil), os.Stdin, ioutil.Discard, ioutil.Discard)
|
||||
err := doc.GenReSTTree(kubectl, "./")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
This will generate a whole series of files, one for each command in the tree, in the directory specified (in this case "./")
|
||||
|
||||
## Generate ReST docs for a single command
|
||||
|
||||
You may wish to have more control over the output, or only generate for a single command, instead of the entire command tree. If this is the case you may prefer to `GenReST` instead of `GenReSTTree`
|
||||
|
||||
```go
|
||||
out := new(bytes.Buffer)
|
||||
err := doc.GenReST(cmd, out)
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
```
|
||||
|
||||
This will write the ReST doc for ONLY "cmd" into the out, buffer.
|
||||
|
||||
## Customize the output
|
||||
|
||||
Both `GenReST` and `GenReSTTree` have alternate versions with callbacks to get some control of the output:
|
||||
|
||||
```go
|
||||
func GenReSTTreeCustom(cmd *Command, dir string, filePrepender func(string) string, linkHandler func(string, string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
func GenReSTCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string, string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
The `filePrepender` will prepend the return value given the full filepath to the rendered ReST file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/):
|
||||
|
||||
```go
|
||||
const fmTemplate = `---
|
||||
date: %s
|
||||
title: "%s"
|
||||
slug: %s
|
||||
url: %s
|
||||
---
|
||||
`
|
||||
filePrepender := func(filename string) string {
|
||||
now := time.Now().Format(time.RFC3339)
|
||||
name := filepath.Base(filename)
|
||||
base := strings.TrimSuffix(name, path.Ext(name))
|
||||
url := "/commands/" + strings.ToLower(base) + "/"
|
||||
return fmt.Sprintf(fmTemplate, now, strings.Replace(base, "_", " ", -1), base, url)
|
||||
}
|
||||
```
|
||||
|
||||
The `linkHandler` can be used to customize the rendered links to the commands, given a command name and reference. This is useful while converting rst to html or while generating documentation with tools like Sphinx where `:ref:` is used:
|
||||
|
||||
```go
|
||||
// Sphinx cross-referencing format
|
||||
linkHandler := func(name, ref string) string {
|
||||
return fmt.Sprintf(":ref:`%s <%s>`", name, ref)
|
||||
}
|
||||
```
|
||||
|
|
@ -1,51 +0,0 @@
|
|||
// Copyright 2015 Red Hat Inc. All rights reserved.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package doc
|
||||
|
||||
import (
|
||||
"strings"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
)
|
||||
|
||||
// Test to see if we have a reason to print See Also information in docs
|
||||
// Basically this is a test for a parent command or a subcommand which is
|
||||
// both not deprecated and not the autogenerated help command.
|
||||
func hasSeeAlso(cmd *cobra.Command) bool {
|
||||
if cmd.HasParent() {
|
||||
return true
|
||||
}
|
||||
for _, c := range cmd.Commands() {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Temporary workaround for yaml lib generating incorrect yaml with long strings
|
||||
// that do not contain \n.
|
||||
func forceMultiLine(s string) string {
|
||||
if len(s) > 60 && !strings.Contains(s, "\n") {
|
||||
s = s + "\n"
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
type byName []*cobra.Command
|
||||
|
||||
func (s byName) Len() int { return len(s) }
|
||||
func (s byName) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
func (s byName) Less(i, j int) bool { return s[i].Name() < s[j].Name() }
|
||||
|
|
@ -1,174 +0,0 @@
|
|||
// Copyright 2016 French Ben. All rights reserved.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package doc
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
"strings"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/pflag"
|
||||
"gopkg.in/yaml.v2"
|
||||
)
|
||||
|
||||
type cmdOption struct {
|
||||
Name string
|
||||
Shorthand string `yaml:",omitempty"`
|
||||
DefaultValue string `yaml:"default_value,omitempty"`
|
||||
Usage string `yaml:",omitempty"`
|
||||
}
|
||||
|
||||
type cmdDoc struct {
|
||||
Name string
|
||||
Synopsis string `yaml:",omitempty"`
|
||||
Description string `yaml:",omitempty"`
|
||||
Usage string `yaml:",omitempty"`
|
||||
Options []cmdOption `yaml:",omitempty"`
|
||||
InheritedOptions []cmdOption `yaml:"inherited_options,omitempty"`
|
||||
Example string `yaml:",omitempty"`
|
||||
SeeAlso []string `yaml:"see_also,omitempty"`
|
||||
}
|
||||
|
||||
// GenYamlTree creates yaml structured ref files for this command and all descendants
|
||||
// in the directory given. This function may not work
|
||||
// correctly if your command names have `-` in them. If you have `cmd` with two
|
||||
// subcmds, `sub` and `sub-third`, and `sub` has a subcommand called `third`
|
||||
// it is undefined which help output will be in the file `cmd-sub-third.1`.
|
||||
func GenYamlTree(cmd *cobra.Command, dir string) error {
|
||||
identity := func(s string) string { return s }
|
||||
emptyStr := func(s string) string { return "" }
|
||||
return GenYamlTreeCustom(cmd, dir, emptyStr, identity)
|
||||
}
|
||||
|
||||
// GenYamlTreeCustom creates yaml structured ref files.
|
||||
func GenYamlTreeCustom(cmd *cobra.Command, dir string, filePrepender, linkHandler func(string) string) error {
|
||||
for _, c := range cmd.Commands() {
|
||||
if !c.IsAvailableCommand() || c.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
if err := GenYamlTreeCustom(c, dir, filePrepender, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
basename := strings.Replace(cmd.CommandPath(), " ", "_", -1) + ".yaml"
|
||||
filename := filepath.Join(dir, basename)
|
||||
f, err := os.Create(filename)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
if _, err := io.WriteString(f, filePrepender(filename)); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := GenYamlCustom(cmd, f, linkHandler); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// GenYaml creates yaml output.
|
||||
func GenYaml(cmd *cobra.Command, w io.Writer) error {
|
||||
return GenYamlCustom(cmd, w, func(s string) string { return s })
|
||||
}
|
||||
|
||||
// GenYamlCustom creates custom yaml output.
|
||||
func GenYamlCustom(cmd *cobra.Command, w io.Writer, linkHandler func(string) string) error {
|
||||
cmd.InitDefaultHelpCmd()
|
||||
cmd.InitDefaultHelpFlag()
|
||||
|
||||
yamlDoc := cmdDoc{}
|
||||
yamlDoc.Name = cmd.CommandPath()
|
||||
|
||||
yamlDoc.Synopsis = forceMultiLine(cmd.Short)
|
||||
yamlDoc.Description = forceMultiLine(cmd.Long)
|
||||
|
||||
if cmd.Runnable() {
|
||||
yamlDoc.Usage = cmd.UseLine()
|
||||
}
|
||||
|
||||
if len(cmd.Example) > 0 {
|
||||
yamlDoc.Example = cmd.Example
|
||||
}
|
||||
|
||||
flags := cmd.NonInheritedFlags()
|
||||
if flags.HasFlags() {
|
||||
yamlDoc.Options = genFlagResult(flags)
|
||||
}
|
||||
flags = cmd.InheritedFlags()
|
||||
if flags.HasFlags() {
|
||||
yamlDoc.InheritedOptions = genFlagResult(flags)
|
||||
}
|
||||
|
||||
if hasSeeAlso(cmd) {
|
||||
result := []string{}
|
||||
if cmd.HasParent() {
|
||||
parent := cmd.Parent()
|
||||
result = append(result, parent.CommandPath()+" - "+parent.Short)
|
||||
}
|
||||
children := cmd.Commands()
|
||||
sort.Sort(byName(children))
|
||||
for _, child := range children {
|
||||
if !child.IsAvailableCommand() || child.IsAdditionalHelpTopicCommand() {
|
||||
continue
|
||||
}
|
||||
result = append(result, child.Name()+" - "+child.Short)
|
||||
}
|
||||
yamlDoc.SeeAlso = result
|
||||
}
|
||||
|
||||
final, err := yaml.Marshal(&yamlDoc)
|
||||
if err != nil {
|
||||
fmt.Println(err)
|
||||
os.Exit(1)
|
||||
}
|
||||
|
||||
if _, err := w.Write(final); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func genFlagResult(flags *pflag.FlagSet) []cmdOption {
|
||||
var result []cmdOption
|
||||
|
||||
flags.VisitAll(func(flag *pflag.Flag) {
|
||||
// Todo, when we mark a shorthand is deprecated, but specify an empty message.
|
||||
// The flag.ShorthandDeprecated is empty as the shorthand is deprecated.
|
||||
// Using len(flag.ShorthandDeprecated) > 0 can't handle this, others are ok.
|
||||
if !(len(flag.ShorthandDeprecated) > 0) && len(flag.Shorthand) > 0 {
|
||||
opt := cmdOption{
|
||||
flag.Name,
|
||||
flag.Shorthand,
|
||||
flag.DefValue,
|
||||
forceMultiLine(flag.Usage),
|
||||
}
|
||||
result = append(result, opt)
|
||||
} else {
|
||||
opt := cmdOption{
|
||||
Name: flag.Name,
|
||||
DefaultValue: forceMultiLine(flag.DefValue),
|
||||
Usage: forceMultiLine(flag.Usage),
|
||||
}
|
||||
result = append(result, opt)
|
||||
}
|
||||
})
|
||||
|
||||
return result
|
||||
}
|
||||
|
|
@ -1,112 +0,0 @@
|
|||
# Generating Yaml Docs For Your Own cobra.Command
|
||||
|
||||
Generating yaml files from a cobra command is incredibly easy. An example is as follows:
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/spf13/cobra"
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
cmd := &cobra.Command{
|
||||
Use: "test",
|
||||
Short: "my test program",
|
||||
}
|
||||
err := doc.GenYamlTree(cmd, "/tmp")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
That will get you a Yaml document `/tmp/test.yaml`
|
||||
|
||||
## Generate yaml docs for the entire command tree
|
||||
|
||||
This program can actually generate docs for the kubectl command in the kubernetes project
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
"log"
|
||||
"os"
|
||||
|
||||
"k8s.io/kubernetes/pkg/kubectl/cmd"
|
||||
cmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
|
||||
|
||||
"github.com/spf13/cobra/doc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
kubectl := cmd.NewKubectlCommand(cmdutil.NewFactory(nil), os.Stdin, ioutil.Discard, ioutil.Discard)
|
||||
err := doc.GenYamlTree(kubectl, "./")
|
||||
if err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
This will generate a whole series of files, one for each command in the tree, in the directory specified (in this case "./")
|
||||
|
||||
## Generate yaml docs for a single command
|
||||
|
||||
You may wish to have more control over the output, or only generate for a single command, instead of the entire command tree. If this is the case you may prefer to `GenYaml` instead of `GenYamlTree`
|
||||
|
||||
```go
|
||||
out := new(bytes.Buffer)
|
||||
doc.GenYaml(cmd, out)
|
||||
```
|
||||
|
||||
This will write the yaml doc for ONLY "cmd" into the out, buffer.
|
||||
|
||||
## Customize the output
|
||||
|
||||
Both `GenYaml` and `GenYamlTree` have alternate versions with callbacks to get some control of the output:
|
||||
|
||||
```go
|
||||
func GenYamlTreeCustom(cmd *Command, dir string, filePrepender, linkHandler func(string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
func GenYamlCustom(cmd *Command, out *bytes.Buffer, linkHandler func(string) string) error {
|
||||
//...
|
||||
}
|
||||
```
|
||||
|
||||
The `filePrepender` will prepend the return value given the full filepath to the rendered Yaml file. A common use case is to add front matter to use the generated documentation with [Hugo](http://gohugo.io/):
|
||||
|
||||
```go
|
||||
const fmTemplate = `---
|
||||
date: %s
|
||||
title: "%s"
|
||||
slug: %s
|
||||
url: %s
|
||||
---
|
||||
`
|
||||
|
||||
filePrepender := func(filename string) string {
|
||||
now := time.Now().Format(time.RFC3339)
|
||||
name := filepath.Base(filename)
|
||||
base := strings.TrimSuffix(name, path.Ext(name))
|
||||
url := "/commands/" + strings.ToLower(base) + "/"
|
||||
return fmt.Sprintf(fmTemplate, now, strings.Replace(base, "_", " ", -1), base, url)
|
||||
}
|
||||
```
|
||||
|
||||
The `linkHandler` can be used to customize the rendered internal links to the commands, given a filename:
|
||||
|
||||
```go
|
||||
linkHandler := func(name string) string {
|
||||
base := strings.TrimSuffix(name, path.Ext(name))
|
||||
return "/commands/" + strings.ToLower(base) + "/"
|
||||
}
|
||||
```
|
||||
|
|
@ -18,10 +18,6 @@ github.com/containerd/containerd/platforms
|
|||
# github.com/coreos/etcd v3.3.25+incompatible
|
||||
## explicit
|
||||
github.com/coreos/etcd/raft/raftpb
|
||||
# github.com/cpuguy83/go-md2man/v2 v2.0.1
|
||||
## explicit
|
||||
github.com/cpuguy83/go-md2man/v2
|
||||
github.com/cpuguy83/go-md2man/v2/md2man
|
||||
# github.com/creack/pty v1.1.11
|
||||
## explicit
|
||||
github.com/creack/pty
|
||||
|
|
@ -193,15 +189,12 @@ github.com/prometheus/common/model
|
|||
github.com/prometheus/procfs
|
||||
github.com/prometheus/procfs/internal/fs
|
||||
github.com/prometheus/procfs/internal/util
|
||||
# github.com/russross/blackfriday/v2 v2.1.0
|
||||
github.com/russross/blackfriday/v2
|
||||
# github.com/sirupsen/logrus v1.8.1
|
||||
## explicit
|
||||
github.com/sirupsen/logrus
|
||||
# github.com/spf13/cobra v1.1.3
|
||||
## explicit
|
||||
github.com/spf13/cobra
|
||||
github.com/spf13/cobra/doc
|
||||
# github.com/spf13/pflag v1.0.5
|
||||
## explicit
|
||||
github.com/spf13/pflag
|
||||
|
|
|
|||
Loading…
Reference in New Issue