1 files changed, 89 insertions, 0 deletions
diff --git a/dviware/dvisvgm/src/FontEncoding.cpp b/dviware/dvisvgm/src/FontEncoding.cpp
new file mode 100644
index 0000000000..3b038b63c6
--- /dev/null
+++ b/dviware/dvisvgm/src/FontEncoding.cpp
@@ -0,0 +1,89 @@
+/*************************************************************************
+** FontEncoding.cpp                                                     **
+**                                                                      **
+** This file is part of dvisvgm -- a fast DVI to SVG converter          **
+** Copyright (C) 2005-2019 Martin Gieseking <martin.gieseking@uos.de>   **
+**                                                                      **
+** This program is free software; you can redistribute it and/or        **
+** modify it under the terms of the GNU General Public License as       **
+** published by the Free Software Foundation; either version 3 of       **
+** the License, or (at your option) any later version.                  **
+**                                                                      **
+** This program 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 General Public License for more details.                         **
+**                                                                      **
+** You should have received a copy of the GNU General Public License    **
+** along with this program; if not, see <http://www.gnu.org/licenses/>. **
+*************************************************************************/
+
+#include "CMap.hpp"
+#include "CMapManager.hpp"
+#include "EncFile.hpp"
+#include "FileFinder.hpp"
+#include "FontEncoding.hpp"
+#include "utility.hpp"
+
+using namespace std;
+
+/** Returns the encoding object for a given encoding name.
+ * @param[in] encname name of the encoding to lookup
+ * @return pointer to encoding object, or 0 if there is no encoding defined */
+FontEncoding* FontEncoding::encoding (const string &encname) {
+	if (encname.empty())
+		return nullptr;
+
+	using EncodingMap = unordered_map<string, unique_ptr<EncFile>>;
+	static EncodingMap encmap;
+	// initially, try to find an .enc file with the given name
+	auto it = encmap.find(encname);
+	if (it != encmap.end())
+		return it->second.get();
+	if (FileFinder::instance().lookup(encname + ".enc", false)) {
+		auto state = encmap.emplace(encname, util::make_unique<EncFile>(encname));
+		return state.first->second.get();
+	}
+	// no .enc file found => try to find a CMap
+	if (CMap *cmap = CMapManager::instance().lookup(encname))
+		return cmap;
+	return nullptr;
+}
+
+/////////////////////////////////////////////////////////////////////////
+
+Character FontEncodingPair::decode (uint32_t c) const {
+	if (_enc1) {
+		Character chr = _enc1->decode(c);
+		if (_enc2 && chr.type() != Character::NAME)
+			chr = _enc2->decode(chr.number());
+		return chr;
+	}
+	return Character(Character::INDEX, 0);
+}
+
+
+bool FontEncodingPair::mapsToCharIndex () const {
+	if (_enc2)
+		return _enc2->mapsToCharIndex();
+	if (_enc1)
+		return _enc1->mapsToCharIndex();
+	return false;
+}
+
+
+const FontEncoding* FontEncodingPair::findCompatibleBaseFontMap (const PhysicalFont *font, CharMapID &charmapID) const {
+	if (_enc2)
+		return _enc2->findCompatibleBaseFontMap(font, charmapID);
+	if (_enc1)
+		return _enc1->findCompatibleBaseFontMap(font, charmapID);
+	return nullptr;
+}
+
+
+void FontEncodingPair::assign (const FontEncoding *enc) {
+	if (!_enc1)
+		_enc1 = enc;
+	else
+		_enc2 = enc;
+}