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/******************************************************************************
* $Id: trstring.cpp 22205 2011-04-18 21:17:30Z rouault $
*
* Project: GML Reader
* Purpose: Functions for translating back and forth between XMLCh and char.
* We assume that XMLCh is a simple numeric type that we can
* correspond 1:1 with char values, but that it likely is larger
* than a char.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2002, Frank Warmerdam
*
* 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.
****************************************************************************/
#ifdef HAVE_XERCES
#include "gmlreaderp.h"
#include "cpl_vsi.h"
#include "cpl_conv.h"
#include "cpl_string.h"
/************************************************************************/
/* tr_isascii() */
/************************************************************************/
static int tr_isascii( const char * pszCString )
{
while( *pszCString != '\0' )
{
if( *((unsigned char *) pszCString) > 127 )
return FALSE;
pszCString++;
}
return TRUE;
}
/************************************************************************/
/* tr_strcmp() */
/************************************************************************/
int tr_strcmp( const char *pszCString, const XMLCh *panXMLString )
{
int i = 0;
/* -------------------------------------------------------------------- */
/* Fast (ASCII) comparison case. */
/* -------------------------------------------------------------------- */
if( tr_isascii( pszCString ) )
{
while( pszCString[i] != 0 && panXMLString[i] != 0
&& pszCString[i] == panXMLString[i] ) {}
if( pszCString[i] == 0 && panXMLString[i] == 0 )
return 0;
else if( pszCString[i] < panXMLString[i] )
return -1;
else
return 1;
}
/* -------------------------------------------------------------------- */
/* Translated UTF8 to XMLCh for comparison. */
/* -------------------------------------------------------------------- */
XMLCh *panFirst = (XMLCh *) CPLCalloc(strlen(pszCString)+1,sizeof(XMLCh));
tr_strcpy( panFirst, pszCString );
while( panFirst[i] != 0 && panXMLString[i] != 0
&& panFirst[i] == panXMLString[i] ) {}
if( panFirst[i] == 0 && panXMLString[i] == 0 )
{
CPLFree( panFirst );
return 0;
}
else if( panFirst[i] < panXMLString[i] )
{
CPLFree( panFirst );
return -1;
}
else
{
CPLFree( panFirst );
return 1;
}
}
/************************************************************************/
/* tr_strcpy(const char*,const XMLCh*) */
/************************************************************************/
void tr_strcpy( XMLCh *panXMLString, const char *pszCString )
{
/* -------------------------------------------------------------------- */
/* Simple (ASCII) case. */
/* -------------------------------------------------------------------- */
if( tr_isascii( pszCString ) )
{
while( *pszCString != 0 )
*(panXMLString++) = *(pszCString++);
*panXMLString = 0;
return;
}
/* -------------------------------------------------------------------- */
/* Otherwise we need to do a full UTC2 to UTF-8 conversion. */
/* -------------------------------------------------------------------- */
int i;
wchar_t *pwszUTF16;
pwszUTF16 = CPLRecodeToWChar( pszCString, CPL_ENC_UTF8, "WCHAR_T" );
for( i = 0; pwszUTF16[i] != 0; i++ )
panXMLString[i] = pwszUTF16[i];
panXMLString[i] = 0;
CPLFree( pwszUTF16 );
}
/************************************************************************/
/* tr_strcpy(const XMLCh*,const char*) */
/************************************************************************/
void tr_strcpy( char *pszCString, const XMLCh *panXMLString )
{
int bSimpleASCII = TRUE;
const XMLCh *panXMLStringOriginal = panXMLString;
char *pszCStringOriginal = pszCString;
while( *panXMLString != 0 )
{
if( *panXMLString > 127 )
bSimpleASCII = FALSE;
*(pszCString++) = (char) *(panXMLString++);
}
*pszCString = 0;
if( bSimpleASCII )
return;
panXMLString = panXMLStringOriginal;
pszCString = pszCStringOriginal;
/* -------------------------------------------------------------------- */
/* The simple translation was wrong, because the source is not */
/* all simple ASCII characters. Redo using the more expensive */
/* recoding API. */
/* -------------------------------------------------------------------- */
int i;
wchar_t *pwszSource = (wchar_t *) CPLCalloc(sizeof(wchar_t),
tr_strlen(panXMLStringOriginal)+1 );
for( i = 0; panXMLString[i] != 0; i++ )
pwszSource[i] = panXMLString[i];
pwszSource[i] = 0;
char *pszResult = CPLRecodeFromWChar( pwszSource,
"WCHAR_T", CPL_ENC_UTF8 );
strcpy( pszCString, pszResult );
CPLFree( pwszSource );
CPLFree( pszResult );
}
/************************************************************************/
/* tr_strlen() */
/************************************************************************/
int tr_strlen( const XMLCh *panXMLString )
{
int nLength = 0;
while( *(panXMLString++) != 0 )
nLength++;
return nLength;
}
/************************************************************************/
/* tr_strdup() */
/************************************************************************/
char *tr_strdup( const XMLCh *panXMLString )
{
/* -------------------------------------------------------------------- */
/* Compute maximum length. */
/* -------------------------------------------------------------------- */
int i, nMaxLen = 1;
for( i = 0; panXMLString[i] != 0; i++ )
{
if( panXMLString[i] < 128 )
nMaxLen++;
else if( panXMLString[i] < 0x7ff )
nMaxLen += 2;
else
nMaxLen += 4;
}
/* -------------------------------------------------------------------- */
/* Do the translation. */
/* -------------------------------------------------------------------- */
char *pszResult = (char *) CPLMalloc(nMaxLen);
tr_strcpy( pszResult, panXMLString );
return pszResult;
}
#endif // HAVE_XERCES
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