108 lines
2.9 KiB
C++
108 lines
2.9 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $NoKeywords: $
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//
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// A string class that keeps all its memory on the stack and performs no
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// memory allocation
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//=============================================================================//
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#ifndef STACKSTRING_H
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#define STACKSTRING_H
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#ifdef _WIN32
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#pragma once
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#endif
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template< size_t cubSize >
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class CStackString
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{
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public:
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class CStackString() { Reset(); }
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class CStackString( const char *pchRHS ) { Set( pchRHS ); }
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void Reset() { m_rchBuffer[0] = 0; m_pchEnd = m_rchBuffer; }
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void Set( const char *pchValue );
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const char *Get() const { return m_rchBuffer; }
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static size_t GetCubSize() { return cubSize; }
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size_t Length() const { return m_pchEnd - &m_rchBuffer[0]; }
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CStackString & operator=( const char *pchValue ) { Set( pchValue ); return *this; }
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CStackString & operator+=( const char *pchValue ) { Append( pchValue ); return *this; }
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operator const char*() const { return m_rchBuffer; }
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void Format( PRINTF_FORMAT_STRING const char *pchFormat, ... );
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void AppendFormat( PRINTF_FORMAT_STRING const char *pchFormat, ... );
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void AppendFormatV( const char *pchFormat, va_list marker );
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void Append( const char *pchValue );
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void SetIndent( uint32 unCount, char chIndent = '\t' );
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private:
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char m_rchBuffer[ cubSize ];
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char *m_pchEnd;
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};
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typedef CStackString<256> CStackString256;
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typedef CStackString<512> CStackString512;
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typedef CStackString<1024> CStackString1024;
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typedef CStackString<8192> CStackStringMax;
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template< size_t cubSize >
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void CStackString<cubSize>::Set( const char *pchValue )
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{
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V_strcpy_safe( m_rchBuffer, pchValue );
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m_pchEnd = &m_rchBuffer[Q_strlen(m_rchBuffer)];
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}
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template< size_t cubSize >
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void CStackString<cubSize>::AppendFormatV( const char *pchFormat, va_list marker )
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{
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size_t cubPrinted = Q_vsnprintf( m_pchEnd, GetCubSize() - Length(), pchFormat, marker );
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m_pchEnd += cubPrinted;
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}
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template< size_t cubSize >
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void CStackString<cubSize>::Format( PRINTF_FORMAT_STRING const char *pchFormat, ... )
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{
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va_list marker;
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va_start( marker, pchFormat );
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size_t cubPrinted = Q_vsnprintf( m_rchBuffer, GetCubSize(), pchFormat, marker );
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m_pchEnd = m_rchBuffer + cubPrinted;
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va_end( marker );
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}
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template< size_t cubSize >
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void CStackString<cubSize>::AppendFormat( PRINTF_FORMAT_STRING const char *pchFormat, ... )
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{
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va_list marker;
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va_start( marker, pchFormat );
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AppendFormatV( pchFormat, marker );
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va_end( marker );
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}
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template< size_t cubSize >
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void CStackString<cubSize>::Append( const char *pchValue )
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{
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Q_strcat( m_rchBuffer, pchValue, GetCubSize() );
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m_pchEnd = m_rchBuffer + Q_strlen(m_rchBuffer);
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}
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template< size_t cubSize >
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void CStackString<cubSize>::SetIndent( uint32 unCount, char chIndent )
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{
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Reset();
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for ( uint32 x = 0; x < unCount && x < (GetCubSize()-1); x++ )
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{
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*m_pchEnd = chIndent;
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m_pchEnd++;
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}
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*m_pchEnd = '\0';
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}
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#endif
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