105 lines
2.5 KiB
C++
105 lines
2.5 KiB
C++
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Pool of all per-level strings. Allocates memory for strings,
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// consolodating duplicates. The memory is freed on behalf of clients
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// at level transition. Strings are of type string_t.
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef GAMESTRINGPOOL_H
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#define GAMESTRINGPOOL_H
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#if defined( _WIN32 )
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#pragma once
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#endif
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class IGameSystem;
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//-----------------------------------------------------------------------------
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// String allocation
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//-----------------------------------------------------------------------------
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string_t AllocPooledString( const char *pszValue );
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string_t FindPooledString( const char *pszValue );
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#define AssertIsValidString( s ) AssertMsg( s == NULL_STRING || s == FindPooledString( STRING(s) ), "Invalid string " #s );
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//-----------------------------------------------------------------------------
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// String system accessor
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//-----------------------------------------------------------------------------
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IGameSystem *GameStringSystem();
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//-----------------------------------------------------------------------------
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class CGameString
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{
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public:
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CGameString() :
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m_iszString( NULL_STRING ), m_pszString( NULL ), m_iSerial( 0 )
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{
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}
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CGameString( const char *pszString, bool bCopy = false ) :
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m_iszString( NULL_STRING ), m_pszString( NULL ), m_iSerial( 0 )
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{
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Set( pszString, bCopy );
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}
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~CGameString()
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{
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if ( m_bCopy )
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free( (void *)m_pszString );
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}
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void Set( const char *pszString, bool bCopy = false )
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{
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if ( m_bCopy && m_pszString )
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free( (void *)m_pszString );
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m_iszString = NULL_STRING;
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m_pszString = ( !bCopy ) ? pszString : strdup( pszString );
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}
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string_t Get() const
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{
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if ( m_iszString == NULL_STRING || m_iSerial != gm_iSerialNumber )
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{
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if ( !m_pszString )
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return NULL_STRING;
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m_iszString = AllocPooledString( m_pszString );
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m_iSerial = gm_iSerialNumber;
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}
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return m_iszString;
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}
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operator const char *() const
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{
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return ( m_pszString ) ? m_pszString : "";
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}
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#ifndef NO_STRING_T
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operator string_t() const
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{
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return Get();
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}
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#endif
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static void IncrementSerialNumber()
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{
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gm_iSerialNumber++;
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}
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private:
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mutable string_t m_iszString;
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const char *m_pszString;
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mutable int m_iSerial;
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bool m_bCopy;
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static int gm_iSerialNumber;
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};
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#endif // GAMESTRINGPOOL_H
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