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/*
FALCON - The Falcon Programming Language
FILE: autocstring.cpp
Utility to convert falcon items and strings into C Strings.
-------------------------------------------------------------------
Author: Giancarlo Niccolai
Begin: sab ago 4 2007
-------------------------------------------------------------------
(C) Copyright 2004: the FALCON developers (see list in AUTHORS file)
See LICENSE file for licensing details.
*/
/** \file
Utility to convert falcon items and strings into C Strings.
*/
#include <falcon/autocstring.h>
#include <falcon/item.h>
#include <falcon/vm.h>
namespace Falcon {
AutoCString::AutoCString():
m_len(0)
{
m_pData = m_buffer;
m_buffer[3] = '\0';
}
AutoCString::AutoCString( const Item &itm ):
m_pData(0)
{
set(itm);
}
AutoCString::AutoCString( const String &str ):
m_pData(0)
{
set(str);
}
void AutoCString::init_vm_and_format( VMachine *vm, const Item &itm, const String &fmt )
{
String *str;
String tempStr;
str = &tempStr;
vm->itemToString( tempStr, &itm, fmt );
if ( (m_len = str->toCString( m_buffer+3, AutoCString_BUF_SPACE-3 ) ) != String::npos )
{
m_pData = m_buffer;
return;
}
Falcon::uint32 len = str->length() * 4 + 4;
m_pData = (char *) memAlloc( len+3 );
m_len = str->toCString( m_pData+3, len );
}
const char* AutoCString::bom_str()
{
m_pData[0] = (char)0xEF;
m_pData[1] = (char)0xBB;
m_pData[2] = (char)0xBF;
return m_pData;
}
AutoCString::~AutoCString()
{
if ( m_pData != 0 && m_pData != m_buffer )
memFree( m_pData );
}
void AutoCString::set( const Falcon::String &str )
{
// remove m_pData
if( m_pData != 0 && m_pData != m_buffer )
memFree( m_pData );
if ( (m_len = str.toCString( m_buffer+3, AutoCString_BUF_SPACE-3 ) ) != String::npos )
{
m_pData = m_buffer;
return;
}
Falcon::uint32 len = str.length() * 4 + 4;
m_pData = (char *) memAlloc( len+3 );
m_len = str.toCString( m_pData+3, len );
}
void AutoCString::set( const Falcon::Item &itm )
{
// remove m_pData
if( m_pData != 0 && m_pData != m_buffer )
memFree( m_pData );
String *str;
String tempStr;
if ( itm.isString() )
{
str = itm.asString();
}
else {
str = &tempStr;
itm.toString( tempStr );
}
//if the size is large, we already know we can't try the conversion
if ( (m_len = str->toCString( m_buffer+3, AutoCString_BUF_SPACE ) ) != String::npos )
{
m_pData = m_buffer;
return;
}
Falcon::uint32 len = str->length() * 4 + 4;
m_pData = (char *) memAlloc( len+3 );
m_len = str->toCString( m_pData+3, len );
}
void AutoCString::set( Falcon::VMachine *vm, const Falcon::Item &itm )
{
// remove m_pData
if( m_pData != 0 && m_pData != m_buffer )
memFree( m_pData );
init_vm_and_format( vm, itm, "" );
}
void AutoCString::set( Falcon::VMachine *vm, const Falcon::Item &itm, const Falcon::String &fmt )
{
// remove m_pData
if( m_pData != 0 && m_pData != m_buffer )
memFree( m_pData );
init_vm_and_format( vm, itm, fmt );
}
}
/* end of autocstring.cpp */
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