// @(#)root/xmlparser:$Id: TXMLParser.cxx 23637 2008-05-02 11:12:04Z rdm $ // Author: Jose Lo 12/1/2005 /************************************************************************* * Copyright (C) 1995-2005, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ ////////////////////////////////////////////////////////////////////////// // // // TXMLParser // // // // TXMLParser is an abstract class which interfaces with Libxml2. // // Libxml2 is the XML C parser and toolkit developed for the Gnome // // project. // // // // The libxml library provides two interfaces to the parser, a DOM // // style tree interface and a SAX style event based interface. // // // // TXMLParser is parent class of TSAXParser, which is a SAX interface // // of libxml. // // // ////////////////////////////////////////////////////////////////////////// /************************************************************************* This source is based on libxml++, a C++ wrapper for the libxml XML parser library. Copyright (C) 2000 by Ari Johnson. libxml++ are copyright (C) 2000 by Ari Johnson, and are covered by the GNU Lesser General Public License, which should be included with libxml++ as the file COPYING. *************************************************************************/ #include "Riostream.h" #include "TXMLParser.h" #include <libxml/parser.h> ClassImp(TXMLParser); //______________________________________________________________________________ TXMLParser::TXMLParser() : fContext(0), fValidate(kTRUE), fReplaceEntities(kFALSE), fParseCode(0) { // Initializes parser variables. } //______________________________________________________________________________ TXMLParser::~TXMLParser() { // Cleanup. ReleaseUnderlying(); fParseCode = 0; } //______________________________________________________________________________ void TXMLParser::SetValidate(Bool_t val) { // The parser will validate the xml file if val = true. fValidate = val; } //______________________________________________________________________________ void TXMLParser::SetReplaceEntities(Bool_t val) { // The parser will replace/expand entities. fReplaceEntities = val; } //______________________________________________________________________________ void TXMLParser::ReleaseUnderlying() { // To release any existing document. if (fContext) { fContext->_private = 0; xmlFreeParserCtxt(fContext); fContext = 0; } } //______________________________________________________________________________ void TXMLParser::OnValidateError(const TString& message) { // This function is called when an error from the parser has occured. // Message is the parse error. fValidateError += message; } //______________________________________________________________________________ void TXMLParser::OnValidateWarning(const TString& message) { // This fucntion is called when a warning from the parser has occured. // Message is the parse error. fValidateWarning += message; } //______________________________________________________________________________ const char *TXMLParser::GetParseCodeMessage(Int_t parseCode) const { // Returns the parse code message. switch (parseCode) { case -1: return "Attempt to parse a second file while a parse is in progress"; break; case -2: return "Parse context is not created"; break; case -3: return "An error occured while parsing file"; break; case -4: return "A fatal error occured while parsing file"; break; case -5: return "Document is not well-formed"; break; case -6: return "Document is not valid"; break; default: return "Parse code does not exist"; } } //______________________________________________________________________________ void TXMLParser::InitializeContext() { // Initialize parser parameters, such as, disactivate non-standards libxml1 // features, on/off validation, clear error and warning messages. fContext->linenumbers = 1; // TRUE - This is the default anyway. fContext->validate = fValidate ? 1 : 0; fContext->replaceEntities = fReplaceEntities ? 1 : 0; fContext->_private = this; fValidateError = ""; fValidateWarning = ""; } //______________________________________________________________________________ void TXMLParser::StopParser() { // Stops parsing. if (fContext) xmlStopParser(fContext); } //______________________________________________________________________________ void TXMLParser::SetParseCode(Int_t errorcode) { // Set the parse code: // 0: Parse succesfull // -1: Attempt to parse a second file while a parse is in progress // -2: Parse context is not created // -3: An error occured while parsing file // -4: A fatal error occured while parsing file // -5: Document is not well-formed fParseCode = errorcode; } //______________________________________________________________________________ void TXMLParser::SetStopOnError(Bool_t stop) { // Set parser stops in case of error: // stop = true, stops on error // stop = false, continue parsing on error... fStopError = stop; }