1 files changed, 70 insertions, 0 deletions
diff --git a/vcl/source/font/FeatureParser.cxx b/vcl/source/font/FeatureParser.cxx
new file mode 100644
index 000000000..5182cea7a
--- /dev/null
+++ b/vcl/source/font/FeatureParser.cxx
@@ -0,0 +1,70 @@
+/* -*- 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/.
+ *
+ */
+
+#include <vcl/font/FeatureParser.hxx>
+#include <vcl/font/Feature.hxx>
+#include <o3tl/string_view.hxx>
+
+namespace vcl::font
+{
+OUString trimFontNameFeatures(OUString const& rFontName)
+{
+    const sal_Int32 nPrefixIdx{ rFontName.indexOf(vcl::font::FeaturePrefix) };
+
+    if (nPrefixIdx < 0)
+        return rFontName;
+
+    return rFontName.copy(0, nPrefixIdx);
+}
+
+FeatureParser::FeatureParser(std::u16string_view rFontName)
+{
+    size_t nPrefixIdx{ rFontName.find(vcl::font::FeaturePrefix) };
+
+    if (nPrefixIdx == std::u16string_view::npos)
+        return;
+
+    std::u16string_view sName(rFontName.substr(++nPrefixIdx));
+    sal_Int32 nIndex = 0;
+    do
+    {
+        std::u16string_view sToken = o3tl::getToken(sName, 0, vcl::font::FeatureSeparator, nIndex);
+
+        sal_Int32 nInnerIdx{ 0 };
+        std::u16string_view sID = o3tl::getToken(sToken, 0, '=', nInnerIdx);
+
+        if (sID == u"lang")
+        {
+            m_sLanguage = o3tl::getToken(sToken, 0, '=', nInnerIdx);
+        }
+        else
+        {
+            OString sFeature = OUStringToOString(sToken, RTL_TEXTENCODING_ASCII_US);
+            FeatureSetting aFeature(sFeature);
+            if (aFeature.m_nTag != 0)
+                m_aFeatures.push_back(aFeature);
+        }
+    } while (nIndex >= 0);
+}
+
+std::unordered_map<uint32_t, uint32_t> FeatureParser::getFeaturesMap() const
+{
+    std::unordered_map<uint32_t, uint32_t> aResultMap;
+    for (auto const& rFeat : m_aFeatures)
+    {
+        if (rFeat.m_nValue != 0)
+            aResultMap.emplace(rFeat.m_nTag, rFeat.m_nValue);
+    }
+    return aResultMap;
+}
+
+} // end vcl::font namespace
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */