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/*************************************************************************
** PdfSpecialHandler.cpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2016 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 <config.h>
#include <cstring>
#include "InputReader.h"
#include "MapLine.h"
#include "PdfSpecialHandler.h"
#include "FontMap.h"
#include "Message.h"
using namespace std;
PdfSpecialHandler::PdfSpecialHandler () : _maplineProcessed(false)
{
}
bool PdfSpecialHandler::process (const char *prefix, istream &is, SpecialActions *actions) {
if (!actions)
return true;
StreamInputReader ir(is);
ir.skipSpace();
string cmd = ir.getWord();
ir.skipSpace();
if (cmd == "mapline" || cmd == "mapfile") {
// read mode selector ('+', '-', or '=')
char modechar = '+'; // default mode (append if new, do not replace existing mapping)
if (strchr("=+-", ir.peek())) // leading modifier given?
modechar = char(ir.get());
else if (!_maplineProcessed) { // no modifier given?
// remove default map entries if this is the first mapline/mapfile special called
FontMap::instance().clear();
}
if (cmd == "mapline") {
try {
MapLine mapline(is);
FontMap::instance().apply(mapline, modechar);
}
catch (const MapLineException &ex) {
Message::wstream(true) << "pdf:mapline: " << ex.what() << '\n';
}
}
else { // mapfile
string fname = ir.getString();
if (!FontMap::instance().read(fname, modechar))
Message::wstream(true) << "can't open map file " << fname << '\n';
}
_maplineProcessed = true;
}
return true;
}
const char** PdfSpecialHandler::prefixes () const {
static const char *pfx[] = {"pdf:", 0};
return pfx;
}
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