vcl/source/font/FeatureParser.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  */
  10
  11 #include <vcl/font/FeatureParser.hxx>
  12 #include <vcl/font/Feature.hxx>
  13 #include <o3tl/string_view.hxx>
  14
  15 namespace vcl::font
  16 {
  17 OUString trimFontNameFeatures(OUString const& rFontName)
  18 {
  19     const sal_Int32 nPrefixIdx{ rFontName.indexOf(vcl::font::FeaturePrefix) };
  20
  21     if (nPrefixIdx < 0)
  22         return rFontName;
  23
  24     return rFontName.copy(0, nPrefixIdx);
  25 }
  26
  27 FeatureParser::FeatureParser(std::u16string_view rFontName)
  28 {
  29     size_t nPrefixIdx{ rFontName.find(vcl::font::FeaturePrefix) };
  30
  31     if (nPrefixIdx == std::u16string_view::npos)
  32         return;
  33
  34     std::u16string_view sName(rFontName.substr(++nPrefixIdx));
  35     sal_Int32 nIndex = 0;
  36     do
  37     {
  38         std::u16string_view sToken = o3tl::getToken(sName, 0, vcl::font::FeatureSeparator, nIndex);
  39
  40         sal_Int32 nInnerIdx{ 0 };
  41         std::u16string_view sID = o3tl::getToken(sToken, 0, '=', nInnerIdx);
  42
  43         if (sID == u"lang")
  44         {
  45             m_sLanguage = o3tl::getToken(sToken, 0, '=', nInnerIdx);
  46         }
  47         else
  48         {
  49             FeatureSetting aFeature(OUStringToOString(sToken, RTL_TEXTENCODING_ASCII_US));
  50             if (aFeature.m_nTag != 0)
  51                 m_aFeatures.push_back(aFeature);
  52         }
  53     } while (nIndex >= 0);
  54 }
  55
  56 std::unordered_map<uint32_t, int32_t> FeatureParser::getFeaturesMap() const
  57 {
  58     std::unordered_map<uint32_t, int32_t> aResultMap;
  59     for (auto const& rFeat : m_aFeatures)
  60         aResultMap.emplace(rFeat.m_nTag, rFeat.m_nValue);
  61     return aResultMap;
  62 }
  63
  64 } // end vcl::font namespace
  65
  66 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */