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/**
* Copyright (C) 2005 Gregoire Lejeune <gregoire.lejeune@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "xslt.h"
#include "parser.h"
extern VALUE cXSLT;
xmlDocPtr parse_xml( char* xml, int iXmlType ) {
xmlDocPtr tXMLDocument = NULL;
#ifdef USE_ERROR_HANDLER
VALUE error_arr = rb_cvar_get(cXSLT, rb_intern("@@errors"));
int iInitialNumberOfErrors = RARRAY(error_arr)->len;
#endif
/** Act: Parse XML */
if( iXmlType == RUBY_XSLT_XMLSRC_TYPE_STR ) {
tXMLDocument = xmlParseMemory( xml, strlen( xml ) );
} else if( iXmlType == RUBY_XSLT_XMLSRC_TYPE_FILE ) {
tXMLDocument = xmlParseFile( xml );
}
if( tXMLDocument == NULL ) {
rb_raise( eXSLTParsingError, "XML parsing error" );
return( NULL );
}
#ifdef USE_ERROR_HANDLER
if(RARRAY(error_arr)->len > iInitialNumberOfErrors) {
rb_raise( eXSLTTransformationError, "Stylesheet transformation error" );
}
#endif
return( tXMLDocument );
}
xsltStylesheetPtr parse_xsl( char* xsl, int iXslType ) {
xsltStylesheetPtr tParsedXslt = NULL;
xmlDocPtr tXSLDocument = NULL;
/** Rem: For encoding */
xmlCharEncodingHandlerPtr encoder = NULL;
const xmlChar *encoding = NULL;
#ifdef USE_ERROR_HANDLER
VALUE error_arr = rb_cvar_get(cXSLT, rb_intern("@@errors"));
int iInitialNumberOfErrors = RARRAY(error_arr)->len;
#endif
/** Act: Encoding support */
xmlInitCharEncodingHandlers( );
/** Act: Parse XSL */
if( iXslType == RUBY_XSLT_XSLSRC_TYPE_STR ) {
tXSLDocument = xmlParseMemory( xsl, strlen( xsl ) );
if( tXSLDocument == NULL ) {
rb_raise( eXSLTParsingError, "XSL parsing error" );
return( NULL );
}
tParsedXslt = xsltParseStylesheetDoc( tXSLDocument );
} else if( iXslType == RUBY_XSLT_XSLSRC_TYPE_FILE ) {
tParsedXslt = xsltParseStylesheetFile( BAD_CAST xsl );
}
if( tParsedXslt == NULL ) {
rb_raise( eXSLTParsingError, "XSL Stylesheet parsing error" );
return( NULL );
}
/** Act: Get encoding */
XSLT_GET_IMPORT_PTR( encoding, tParsedXslt, encoding )
encoder = xmlFindCharEncodingHandler((char *)encoding);
if( encoding != NULL ) {
encoder = xmlFindCharEncodingHandler((char *)encoding);
if( (encoder != NULL) && (xmlStrEqual((const xmlChar *)encoder->name, (const xmlChar *) "UTF-8")) ) {
encoder = NULL;
}
}
#ifdef USE_ERROR_HANDLER
if(RARRAY(error_arr)->len > iInitialNumberOfErrors) {
rb_raise( eXSLTTransformationError, "Stylesheet transformation error" );
}
#endif
return( tParsedXslt );
}
/**
* xOut = parser( char *xml, int iXmlType, char *xslt, int iXslType, char **pxParams );
*/
char* parse( xsltStylesheetPtr tParsedXslt, xmlDocPtr tXMLDocument, char **pxParams ) {
xmlDocPtr tXMLDocumentResult = NULL;
int iXMLDocumentResult;
xmlChar *tXMLDocumentResultString;
int tXMLDocumentResultLenght;
#ifdef USE_ERROR_HANDLER
VALUE error_arr = rb_cvar_get(cXSLT, rb_intern("@@errors"));
int iInitialNumberOfErrors = RARRAY(error_arr)->len;
#endif
tXMLDocumentResult = xsltApplyStylesheet( tParsedXslt, tXMLDocument, (const char**) pxParams );
if( tXMLDocumentResult == NULL ) {
rb_raise( eXSLTTransformationError, "Stylesheet transformation error" );
return( NULL );
}
iXMLDocumentResult = xsltSaveResultToString( &tXMLDocumentResultString, &tXMLDocumentResultLenght, tXMLDocumentResult, tParsedXslt );
xmlFreeDoc(tXMLDocumentResult);
#ifdef USE_ERROR_HANDLER
if(RARRAY(error_arr)->len > iInitialNumberOfErrors) {
rb_raise( eXSLTTransformationError, "Stylesheet transformation error" );
}
#endif
return((char*)tXMLDocumentResultString);
}
/**
* vOut = object_to_string( VALUE object );
*/
VALUE object_to_string( VALUE object ) {
VALUE vOut = Qnil;
switch( TYPE( object ) ) {
case T_STRING:
{
if( isFile( STR2CSTR( object ) ) == 0 ) {
vOut = object;
} else {
long iBufferLength;
long iCpt;
char *xBuffer;
FILE* fStream = fopen( STR2CSTR( object ), "r" );
if( fStream == NULL ) {
return( Qnil );
}
fseek( fStream, 0L, 2 );
iBufferLength = ftell( fStream );
xBuffer = (char *)malloc( (int)iBufferLength + 1 );
if( !xBuffer )
rb_raise( rb_eNoMemError, "Memory allocation error" );
xBuffer[iBufferLength] = 0;
fseek( fStream, 0L, 0 );
iCpt = fread( xBuffer, 1, (int)iBufferLength, fStream );
if( iCpt != iBufferLength ) {
free( (char *)xBuffer );
rb_raise( rb_eSystemCallError, "Read file error" );
}
vOut = rb_str_new2( xBuffer );
free( xBuffer );
fclose( fStream );
}
}
break;
case T_DATA:
case T_OBJECT:
{
if( strcmp( getRubyObjectName( object ), "XML::Smart::Dom" ) == 0 ||
strcmp( getRubyObjectName( object ), "XML::Simple::Dom" ) == 0 ) {
vOut = rb_funcall( object, rb_intern( "to_s" ), 0 );
} else if ( strcmp( getRubyObjectName( object ), "REXML::Document" ) == 0 ) {
vOut = rb_funcall( object, rb_intern( "to_s" ), 0 );
} else {
rb_raise( rb_eSystemCallError, "Can't read XML from object %s", getRubyObjectName( object ) );
}
}
break;
default:
rb_raise( rb_eArgError, "XML object #0x%x not supported", TYPE( object ) );
}
return( vOut );
}
/**
* bOut = objectIsFile( VALUE object );
*/
int objectIsFile( VALUE object ) {
int bOut = 0;
switch( TYPE( object ) ) {
case T_STRING:
{
if( isFile( STR2CSTR( object ) ) == 0 )
bOut = 0;
else
bOut = 1;
}
break;
case T_DATA:
case T_OBJECT:
default:
bOut = 0;
}
return( bOut );
}
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