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https://github.com/tfussell/xlnt.git
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387 lines
12 KiB
C++
387 lines
12 KiB
C++
// Copyright (c) 2014-2016 Thomas Fussell
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// Copyright (c) 2010-2015 openpyxl
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, WRISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE
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//
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// @license: http://www.opensource.org/licenses/mit-license.php
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// @author: see AUTHORS file
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#include <algorithm>
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#include <iterator>
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#include <pugixml.hpp>
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#include <detail/constants.hpp>
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#include <detail/excel_serializer.hpp>
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#include <detail/manifest_serializer.hpp>
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#include <detail/relationship_serializer.hpp>
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#include <detail/shared_strings_serializer.hpp>
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#include <detail/style_serializer.hpp>
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#include <detail/stylesheet.hpp>
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#include <detail/theme_serializer.hpp>
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#include <detail/workbook_impl.hpp>
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#include <detail/workbook_serializer.hpp>
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#include <detail/worksheet_serializer.hpp>
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#include <xlnt/cell/text.hpp>
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#include <xlnt/packaging/document_properties.hpp>
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#include <xlnt/packaging/manifest.hpp>
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#include <xlnt/styles/format.hpp>
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#include <xlnt/styles/style.hpp>
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#include <xlnt/utils/exceptions.hpp>
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#include <xlnt/workbook/workbook.hpp>
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#include <xlnt/workbook/worksheet_iterator.hpp>
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#include <xlnt/worksheet/range_iterator.hpp>
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#include <xlnt/worksheet/worksheet.hpp>
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namespace {
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std::string::size_type find_string_in_string(const std::string &string, const std::string &substring)
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{
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std::string::size_type possible_match_index = string.find(substring.at(0));
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while (possible_match_index != std::string::npos)
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{
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if (string.substr(possible_match_index, substring.size()) == substring)
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{
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return possible_match_index;
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}
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possible_match_index = string.find(substring.at(0), possible_match_index + 1);
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}
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return possible_match_index;
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}
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bool load_workbook(xlnt::zip_file &archive, bool guess_types, bool data_only, xlnt::workbook &wb, xlnt::detail::stylesheet &stylesheet)
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{
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wb.set_guess_types(guess_types);
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wb.set_data_only(data_only);
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if(!archive.has_file(xlnt::constants::ArcContentTypes()))
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{
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throw xlnt::invalid_file_exception("missing [Content Types].xml");
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}
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xlnt::manifest_serializer ms(wb.get_manifest());
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pugi::xml_document manifest_xml;
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manifest_xml.load(archive.read(xlnt::constants::ArcContentTypes()).c_str());
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ms.read_manifest(manifest_xml);
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if (ms.determine_document_type() != "excel")
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{
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throw xlnt::invalid_file_exception("package is not an OOXML SpreadsheetML");
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}
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wb.clear();
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if(archive.has_file(xlnt::constants::ArcCore()))
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{
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xlnt::workbook_serializer workbook_serializer_(wb);
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pugi::xml_document core_properties_xml;
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core_properties_xml.load(archive.read(xlnt::constants::ArcCore()).c_str());
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workbook_serializer_.read_properties_core(core_properties_xml);
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}
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if(archive.has_file(xlnt::constants::ArcApp()))
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{
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xlnt::workbook_serializer workbook_serializer_(wb);
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pugi::xml_document app_properties_xml;
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app_properties_xml.load(archive.read(xlnt::constants::ArcApp()).c_str());
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workbook_serializer_.read_properties_app(app_properties_xml);
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}
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xlnt::relationship_serializer relationship_serializer_(archive);
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auto root_relationships = relationship_serializer_.read_relationships("");
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for (const auto &relationship : root_relationships)
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{
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wb.create_root_relationship(relationship.get_id(), relationship.get_target_uri(), relationship.get_type());
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}
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auto workbook_relationships = relationship_serializer_.read_relationships(xlnt::constants::ArcWorkbook());
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for (const auto &relationship : workbook_relationships)
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{
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wb.create_relationship(relationship.get_id(), relationship.get_target_uri(), relationship.get_type());
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}
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pugi::xml_document xml;
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xml.load(archive.read(xlnt::constants::ArcWorkbook()).c_str());
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auto root_node = xml.child("workbook");
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auto workbook_pr_node = root_node.child("workbookPr");
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wb.get_properties().excel_base_date =
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(workbook_pr_node.attribute("date1904") && workbook_pr_node.attribute("date1904").value() != std::string("0"))
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? xlnt::calendar::mac_1904
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: xlnt::calendar::windows_1900;
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if(archive.has_file(xlnt::constants::ArcSharedString()))
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{
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std::vector<xlnt::text> shared_strings;
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pugi::xml_document shared_strings_xml;
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shared_strings_xml.load(archive.read(xlnt::constants::ArcSharedString()).c_str());
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xlnt::shared_strings_serializer::read_shared_strings(shared_strings_xml, shared_strings);
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for (auto &shared_string : shared_strings)
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{
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wb.add_shared_string(shared_string, true);
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}
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}
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xlnt::style_serializer style_serializer(stylesheet);
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pugi::xml_document style_xml;
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style_xml.load(archive.read(xlnt::constants::ArcStyles()).c_str());
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style_serializer.read_stylesheet(style_xml);
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auto sheets_node = root_node.child("sheets");
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for (auto sheet_node : sheets_node.children())
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{
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auto rel = wb.get_relationship(sheet_node.attribute("r:id").value());
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auto ws = wb.create_sheet(sheet_node.attribute("name").value(), rel);
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//TODO: this is really bad
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auto ws_filename = (rel.get_target_uri().substr(0, 3) != "xl/" ? "xl/" : "") + rel.get_target_uri();
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auto sheet_type = wb.get_manifest().get_override_type(ws_filename);
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if(rel.get_type() != xlnt::relationship::type::worksheet)
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{
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continue;
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}
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xlnt::worksheet_serializer worksheet_serializer(ws);
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pugi::xml_document worksheet_xml;
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worksheet_xml.load(archive.read(ws_filename).c_str());
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worksheet_serializer.read_worksheet(worksheet_xml, stylesheet);
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}
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if (archive.has_file("docProps/thumbnail.jpeg"))
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{
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auto thumbnail_data = archive.read("docProps/thumbnail.jpeg");
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wb.set_thumbnail(std::vector<std::uint8_t>(thumbnail_data.begin(), thumbnail_data.end()));
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}
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return true;
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}
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} // namespace
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namespace xlnt {
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const std::string excel_serializer::central_directory_signature()
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{
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return "\x50\x4b\x05\x06";
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}
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std::string excel_serializer::repair_central_directory(const std::string &original)
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{
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auto pos = find_string_in_string(original, central_directory_signature());
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if (pos != std::string::npos)
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{
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return original.substr(0, pos + 22);
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}
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return original;
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}
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bool excel_serializer::load_stream_workbook(std::istream &stream, bool guess_types, bool data_only)
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{
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std::vector<std::uint8_t> bytes;
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//TODO: inefficient?
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while (stream.good())
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{
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bytes.push_back(static_cast<std::uint8_t>(stream.get()));
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}
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return load_virtual_workbook(bytes, guess_types, data_only);
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}
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bool excel_serializer::load_workbook(const std::string &filename, bool guess_types, bool data_only)
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{
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try
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{
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archive_.load(filename);
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}
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catch (std::runtime_error)
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{
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throw invalid_file_exception(filename);
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}
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return ::load_workbook(archive_, guess_types, data_only, workbook_, get_stylesheet());
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}
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bool excel_serializer::load_virtual_workbook(const std::vector<std::uint8_t> &bytes, bool guess_types, bool data_only)
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{
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archive_.load(bytes);
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return ::load_workbook(archive_, guess_types, data_only, workbook_, get_stylesheet());
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}
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excel_serializer::excel_serializer(workbook &wb) : workbook_(wb)
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{
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}
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void excel_serializer::write_data(bool /*as_template*/)
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{
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relationship_serializer relationship_serializer_(archive_);
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relationship_serializer_.write_relationships(workbook_.get_root_relationships(), "");
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relationship_serializer_.write_relationships(workbook_.get_relationships(), constants::ArcWorkbook());
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pugi::xml_document properties_app_xml;
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workbook_serializer workbook_serializer_(workbook_);
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workbook_serializer_.write_properties_app(properties_app_xml);
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{
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std::ostringstream ss;
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properties_app_xml.save(ss);
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archive_.writestr(constants::ArcApp(), ss.str());
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}
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pugi::xml_document properties_core_xml;
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workbook_serializer_.write_properties_core(properties_core_xml);
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{
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std::ostringstream ss;
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properties_core_xml.save(ss);
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archive_.writestr(constants::ArcCore(), ss.str());
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}
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pugi::xml_document theme_xml;
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theme_serializer theme_serializer_;
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theme_serializer_.write_theme(workbook_.get_loaded_theme(), theme_xml);
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{
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std::ostringstream ss;
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theme_xml.save(ss);
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archive_.writestr(constants::ArcTheme(), ss.str());
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}
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if (!workbook_.get_shared_strings().empty())
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{
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const auto &strings = workbook_.get_shared_strings();
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pugi::xml_document shared_strings_xml;
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shared_strings_serializer::write_shared_strings(strings, shared_strings_xml);
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std::ostringstream ss;
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shared_strings_xml.save(ss);
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archive_.writestr(constants::ArcSharedString(), ss.str());
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}
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pugi::xml_document workbook_xml;
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workbook_serializer_.write_workbook(workbook_xml);
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{
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std::ostringstream ss;
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workbook_xml.save(ss);
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archive_.writestr(constants::ArcWorkbook(), ss.str());
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}
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style_serializer style_serializer(workbook_.d_->stylesheet_);
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pugi::xml_document style_xml;
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style_serializer.write_stylesheet(style_xml);
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{
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std::ostringstream ss;
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style_xml.save(ss);
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archive_.writestr(constants::ArcStyles(), ss.str());
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}
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manifest_serializer manifest_serializer_(workbook_.get_manifest());
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pugi::xml_document manifest_xml;
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manifest_serializer_.write_manifest(manifest_xml);
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{
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std::ostringstream ss;
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manifest_xml.save(ss);
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archive_.writestr(constants::ArcContentTypes(), ss.str());
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}
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write_worksheets();
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if(!workbook_.get_thumbnail().empty())
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{
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const auto &thumbnail = workbook_.get_thumbnail();
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archive_.writestr("docProps/thumbnail.jpeg", std::string(thumbnail.begin(), thumbnail.end()));
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}
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}
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void excel_serializer::write_worksheets()
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{
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std::size_t index = 0;
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for (auto ws : workbook_)
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{
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for (auto relationship : workbook_.get_relationships())
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{
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if (relationship.get_type() == relationship::type::worksheet &&
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workbook::index_from_ws_filename(relationship.get_target_uri()) == index)
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{
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worksheet_serializer serializer_(ws);
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std::string ws_filename = (relationship.get_target_uri().substr(0, 3) != "xl/" ? "xl/" : "") + relationship.get_target_uri();
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std::ostringstream ss;
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pugi::xml_document worksheet_xml;
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serializer_.write_worksheet(worksheet_xml);
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worksheet_xml.save(ss);
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archive_.writestr(ws_filename, ss.str());
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break;
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}
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}
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index++;
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}
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}
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void excel_serializer::write_external_links()
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{
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}
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bool excel_serializer::save_stream_workbook(std::ostream &stream, bool as_template)
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{
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write_data(as_template);
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archive_.save(stream);
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return true;
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}
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bool excel_serializer::save_workbook(const std::string &filename, bool as_template)
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{
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write_data(as_template);
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archive_.save(filename);
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return true;
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}
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bool excel_serializer::save_virtual_workbook(std::vector<std::uint8_t> &bytes, bool as_template)
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{
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write_data(as_template);
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archive_.save(bytes);
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return true;
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}
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detail::stylesheet &excel_serializer::get_stylesheet()
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{
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return workbook_.d_->stylesheet_;
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}
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} // namespace xlnt
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