ExpatXMLParser.cc

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00001 /*
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00006  * 
00007  * Intel Open Source License 
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00009  * Copyright (c) 2006 Intel Corporation. All rights reserved. 
00010  * 
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00024  *   this software without specific prior written permission.
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00038 
00039 #include "config.h"
00040 
00041 #ifdef LIBEXPAT_ENABLED
00042 
00043 #include "ExpatXMLParser.h"
00044 #include "XMLDocument.h"
00045 #include "XMLObject.h"
00046 
00047 namespace oasys {
00048 
00049 //----------------------------------------------------------------------
00050 ExpatXMLParser::ExpatXMLParser(const char* logpath)
00051     : Logger("ExpatXMLParser", logpath)
00052 {
00053 }
00054     
00055 //----------------------------------------------------------------------
00056 ExpatXMLParser::~ExpatXMLParser()
00057 {
00058 }
00059 
00060 //----------------------------------------------------------------------
00061 bool
00062 ExpatXMLParser::parse(XMLDocument* doc, const std::string& data)
00063 {
00064     XML_Parser p = XML_ParserCreate(NULL);
00065 
00066     // set up the expat handlers
00067     XML_SetUserData(p, this);
00068     XML_SetElementHandler(p, start_element, end_element);
00069     XML_SetCharacterDataHandler(p, character_data);
00070 
00071     // cache the document and null out the object
00072     doc_ = doc;
00073     cur_ = NULL;
00074 
00075     if (XML_Parse(p, data.c_str(), data.length(), true) != XML_STATUS_OK) {
00076         log_err("parse error at line %d:\n%s",
00077                 XML_GetCurrentLineNumber(p),
00078                 XML_ErrorString(XML_GetErrorCode(p)));
00079         return false;
00080     }
00081 
00082     return true;
00083 }
00084 
00085 //----------------------------------------------------------------------
00086 void XMLCALL
00087 ExpatXMLParser::start_element(void* data,
00088                               const char* element,
00089                               const char** attr)
00090 {
00091     ExpatXMLParser* this2 = (ExpatXMLParser*)data;
00092 
00093     XMLObject* new_object = new XMLObject(element);
00094     if (this2->cur_ == NULL) {
00095         this2->doc_->set_root(new_object);
00096     } else {
00097         this2->cur_->add_element(new_object);
00098     }
00099 
00100     this2->cur_ = new_object;
00101     while (attr[0] != NULL) {
00102         ASSERT(attr[1] != NULL);
00103         this2->cur_->add_attr(attr[0], attr[1]);
00104         attr += 2;
00105     }
00106 }
00107 
00108 //----------------------------------------------------------------------
00109 void XMLCALL
00110 ExpatXMLParser::end_element(void* data,
00111                             const char* element)
00112 {
00113     ExpatXMLParser* this2 = (ExpatXMLParser*)data;
00114     ASSERT(this2->cur_->tag() == element);
00115     this2->cur_ = this2->cur_->parent();
00116 }
00117 
00118 //----------------------------------------------------------------------
00119 void XMLCALL
00120 ExpatXMLParser::character_data(void* data,
00121                                const XML_Char* s,
00122                                int len)
00123 {
00124     ExpatXMLParser* this2 = (ExpatXMLParser*)data;
00125     ASSERT(this2->cur_ != NULL);
00126     this2->cur_->add_text(s, len);
00127 }
00128 
00129 } // namespace oasys
00130 
00131 #endif /* LIBEXPAT_ENABLED */

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