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Diffstat (limited to 'shell/source/all/xml_parser.cxx')
| -rw-r--r-- | shell/source/all/xml_parser.cxx | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/shell/source/all/xml_parser.cxx b/shell/source/all/xml_parser.cxx new file mode 100644 index 000000000000..71665ce9fd0d --- /dev/null +++ b/shell/source/all/xml_parser.cxx @@ -0,0 +1,216 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_shell.hxx" + +#include "internal/xml_parser.hxx" +#include "internal/i_xml_parser_event_handler.hxx" + +#include <assert.h> + +namespace /* private */ +{ + + //###################################################### + /* Extracts the local part of tag without + namespace decoration e.g. meta:creator -> creator */ + const XML_Char COLON = (XML_Char)':'; + + const XML_Char* get_local_name(const XML_Char* rawname) + { + const XML_Char* p = rawname; + + // go to the end + while (*p) p++; + + // go back until the first ':' + while (*p != COLON && p > rawname) + p--; + + // if we are on a colon one step forward + if (*p == COLON) + p++; + + return p; + } + + //################################################ + inline xml_parser* get_parser_instance(void* data) + { + return reinterpret_cast<xml_parser*>(XML_GetUserData( + reinterpret_cast<XML_Parser>(data))); + } + + //################################################ + bool has_only_whitespaces(const XML_Char* s, int len) + { + const XML_Char* p = s; + for (int i = 0; i < len; i++) + if (*p++ != ' ') return false; + return true; + } +} + +//################################################### +xml_parser::xml_parser(const XML_Char* EncodingName) : + document_handler_(0), + xml_parser_(XML_ParserCreate(EncodingName)) +{ + init(); +} + +//################################################### +xml_parser::~xml_parser() +{ + XML_ParserFree(xml_parser_); +} + +//################################################### +/* Callback functions will be called by the parser on + different events */ + +//################################################### +extern "C" +{ + +static void xml_start_element_handler(void* UserData, const XML_Char* name, const XML_Char** atts) +{ + assert(UserData != NULL); + + xml_parser* pImpl = get_parser_instance(UserData); + + i_xml_parser_event_handler* pDocHdl = pImpl->get_document_handler(); + if (pDocHdl) + { + xml_tag_attribute_container_t attributes; + + int i = 0; + + while(atts[i]) + { + attributes[reinterpret_cast<const char_t*>(get_local_name(atts[i]))] = reinterpret_cast<const char_t*>(atts[i+1]); + i += 2; // skip to next pair + } + + pDocHdl->start_element( + reinterpret_cast<const char_t*>(name), reinterpret_cast<const char_t*>(get_local_name(name)), attributes); + } +} + +//################################################### +static void xml_end_element_handler(void* UserData, const XML_Char* name) +{ + assert(UserData); + + xml_parser* pImpl = get_parser_instance(UserData); + i_xml_parser_event_handler* pDocHdl = pImpl->get_document_handler(); + if (pDocHdl) + pDocHdl->end_element(reinterpret_cast<const char_t*>(name), reinterpret_cast<const char_t*>(get_local_name(name))); +} + +//################################################### +static void xml_character_data_handler(void* UserData, const XML_Char* s, int len) +{ + assert(UserData); + + xml_parser* pImpl = get_parser_instance(UserData); + i_xml_parser_event_handler* pDocHdl = pImpl->get_document_handler(); + if (pDocHdl) + { + if (has_only_whitespaces(s,len)) + pDocHdl->ignore_whitespace(string_t(reinterpret_cast<const char_t*>(s), len)); + else + pDocHdl->characters(string_t(reinterpret_cast<const char_t*>(s), len)); + } +} + +//################################################### +static void xml_comment_handler(void* UserData, const XML_Char* Data) +{ + assert(UserData); + + xml_parser* pImpl = get_parser_instance(UserData); + i_xml_parser_event_handler* pDocHdl = pImpl->get_document_handler(); + if (pDocHdl) + pDocHdl->comment(reinterpret_cast<const char_t*>(Data)); +} + +} // extern "C" + +//################################################### +void xml_parser::init() +{ + XML_SetUserData(xml_parser_, this); + + // we use the parser as handler argument, + // so we could use it if necessary, the + // UserData are usable anyway using + // XML_GetUserData(...) + XML_UseParserAsHandlerArg(xml_parser_); + + XML_SetElementHandler( + xml_parser_, + xml_start_element_handler, + xml_end_element_handler); + + XML_SetCharacterDataHandler( + xml_parser_, + xml_character_data_handler); + + XML_SetCommentHandler( + xml_parser_, + xml_comment_handler); +} + +//################################################### +void xml_parser::parse(const char* XmlData, size_t Length, bool IsFinal) +{ + if (0 == XML_Parse(xml_parser_, XmlData, Length, IsFinal)) + throw xml_parser_exception( + (char*)XML_ErrorString(XML_GetErrorCode(xml_parser_)), + (int)XML_GetErrorCode(xml_parser_), + XML_GetCurrentLineNumber(xml_parser_), + XML_GetCurrentColumnNumber(xml_parser_), + XML_GetCurrentByteIndex(xml_parser_)); +} + +//################################################### +void xml_parser::set_document_handler( + i_xml_parser_event_handler* event_handler) +{ + document_handler_ = event_handler; +} + +//################################################### +i_xml_parser_event_handler* xml_parser::get_document_handler() const +{ + return document_handler_; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |