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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
commit | 940b4d1848e8c70ab7642901a68594e8016caffc (patch) | |
tree | eb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /shell/source/all/xml_parser.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip |
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'shell/source/all/xml_parser.cxx')
-rw-r--r-- | shell/source/all/xml_parser.cxx | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/shell/source/all/xml_parser.cxx b/shell/source/all/xml_parser.cxx new file mode 100644 index 000000000..b067c6231 --- /dev/null +++ b/shell/source/all/xml_parser.cxx @@ -0,0 +1,192 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + + +#include <xml_parser.hxx> +#include <i_xml_parser_event_handler.hxx> + +#ifdef _WIN32 +#include <utilities.hxx> +#else +#define UTF8ToWString(s) s +#endif + +#include <assert.h> + +namespace /* private */ +{ + + /* Extracts the local part of tag without + namespace decoration e.g. meta:creator -> creator */ + const XML_Char COLON = ':'; + + 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; + } + + xml_parser* get_parser_instance(void* data) + { + return static_cast<xml_parser*>(XML_GetUserData( + static_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() : + document_handler_(nullptr), + xml_parser_(XML_ParserCreate(nullptr)) +{ + 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 != nullptr); + + xml_parser* pImpl = get_parser_instance(UserData); + + i_xml_parser_event_handler* pDocHdl = pImpl->get_document_handler(); + if (!pDocHdl) + return; + + xml_tag_attribute_container_t attributes; + + int i = 0; + + while(atts[i]) + { + attributes[UTF8ToWString(reinterpret_cast<const char*>(get_local_name(atts[i])))] = UTF8ToWString(reinterpret_cast<const char*>(atts[i+1])); + i += 2; // skip to next pair + } + + pDocHdl->start_element( + UTF8ToWString(reinterpret_cast<const char*>(name)), UTF8ToWString(reinterpret_cast<const char*>(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(UTF8ToWString(reinterpret_cast<const char*>(name)), UTF8ToWString(reinterpret_cast<const char*>(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(UTF8ToWString(std::string(reinterpret_cast<const char*>(s), len))); + else + pDocHdl->characters(UTF8ToWString(std::string(reinterpret_cast<const char*>(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(UTF8ToWString(reinterpret_cast<const char*>(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 (XML_STATUS_ERROR == + XML_Parse(xml_parser_, XmlData, static_cast<int>(Length), IsFinal)) + { + throw xml_parser_exception( + XML_ErrorString(XML_GetErrorCode(xml_parser_))); + } +} + +void xml_parser::set_document_handler( + i_xml_parser_event_handler* event_handler) +{ + document_handler_ = event_handler; +} + + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |