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/*************************************************************************
** CMap.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2021 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 <algorithm>
#include <sstream>
#include "CMap.hpp"
#include "CMapManager.hpp"
#include "FileFinder.hpp"
#include "Unicode.hpp"
using namespace std;
const char* CMap::path () const {
return FileFinder::instance().lookup(name(), "cmap", false);
}
const FontEncoding* CMap::findCompatibleBaseFontMap (const PhysicalFont *font, CharMapID &charmapID) const {
return CMapManager::instance().findCompatibleBaseFontMap(font, this, charmapID);
}
//////////////////////////////////////////////////////////////////////
void SegmentedCMap::addCIDRange (uint32_t first, uint32_t last, uint32_t cid) {
if (uint32_t cp = Unicode::fromSurrogate(first)) // is 'first' a surrogate?
first = cp;
if (uint32_t cp = Unicode::fromSurrogate(last)) // is 'last' a surrogate?
last = cp;
_cidranges.addRange(first, last, cid);
}
void SegmentedCMap::addBFRange (uint32_t first, uint32_t last, uint32_t chrcode) {
if (uint32_t cp = Unicode::fromSurrogate(chrcode)) // is 'chrcode' a surrogate?
chrcode = cp;
_bfranges.addRange(first, last, chrcode);
}
/** Returns the RO (Registry-Ordering) string of the CMap. */
string SegmentedCMap::getROString() const {
if (_registry.empty() || _ordering.empty())
return "";
return _registry + "-" + _ordering;
}
bool SegmentedCMap::mapsToUnicode () const {
vector<string> encstrings = {"UTF8", "UTF16", "UCS2", "UCS4", "UCS32"};
for (const string &encstr : encstrings) {
size_t pos = _filename.find(encstr);
if (pos != string::npos && (pos == 0 || _filename[pos-1] == '-'))
return true;
}
return false;
}
/** Returns the CID for a given character code. */
uint32_t SegmentedCMap::cid (uint32_t c) const {
if (_cidranges.valueExists(c))
return _cidranges.valueAt(c);
if (_basemap)
return _basemap->cid(c);
return 0;
}
/** Returns the character code of a base font for a given CID. */
uint32_t SegmentedCMap::bfcode (uint32_t cid) const {
if (_bfranges.valueExists(cid))
return _bfranges.valueAt(cid);
if (_basemap)
return _basemap->bfcode(cid);
return 0;
}
void SegmentedCMap::write (ostream &os) const {
_cidranges.write(os);
}
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