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