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/*************************************************************************
** EPSToSVG.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 <fstream>
#include <sstream>
#include "EPSFile.h"
#include "EPSToSVG.h"
#include "Message.h"
#include "MessageException.h"
#include "PsSpecialHandler.h"
#include "SVGOutput.h"
#include "System.h"
using namespace std;
void EPSToSVG::convert () {
#ifndef HAVE_LIBGS
if (!Ghostscript().available())
throw MessageException("Ghostscript is required to process the EPS file");
#endif
EPSFile epsfile(_fname);
if (!epsfile.hasValidHeader())
throw PSException("invalid EPS file");
BoundingBox bbox;
epsfile.bbox(bbox);
if (bbox.width() == 0 || bbox.height() == 0)
Message::wstream(true) << "bounding box of file " << _fname << " is empty\n";
Message::mstream(false, Message::MC_PAGE_NUMBER) << "processing file " << _fname << '\n';
Message::mstream().indent(1);
_svg.newPage(1);
// create a psfile special and forward it to the PsSpecialHandler
stringstream ss;
ss << "\"" << _fname << "\" "
"llx=" << bbox.minX() << " "
"lly=" << bbox.minY() << " "
"urx=" << bbox.maxX() << " "
"ury=" << bbox.maxY();
try {
PsSpecialHandler pshandler;
pshandler.process("psfile=", ss, this);
}
catch (...) {
progress(0); // remove progress message
throw;
}
progress(0);
// output SVG file
_svg.setBBox(_bbox);
_svg.appendToDoc(new XMLCommentNode(" This file was generated by dvisvgm " VERSION " "));
_svg.write(_out.getPageStream(1, 1));
string svgfname = _out.filename(1, 1);
const double bp2pt = 72.27/72;
const double bp2mm = 25.4/72;
Message::mstream(false, Message::MC_PAGE_SIZE) << "graphic size: " << XMLString(bbox.width()*bp2pt) << "pt"
" x " << XMLString(bbox.height()*bp2pt) << "pt"
" (" << XMLString(bbox.width()*bp2mm) << "mm"
" x " << XMLString(bbox.height()*bp2mm) << "mm)\n";
Message::mstream(false, Message::MC_PAGE_WRITTEN) << "graphic written to " << (svgfname.empty() ? "<stdout>" : svgfname) << '\n';
}
string EPSToSVG::getSVGFilename (unsigned pageno) const {
if (pageno == 1)
return _out.filename(1, 1);
return "";
}
void EPSToSVG::progress (const char *id) {
static double time=0;
static bool draw=false; // show progress indicator?
static size_t count=0;
count++;
// don't show the progress indicator before the given time has elapsed
if (!draw && System::time()-time > PROGRESSBAR_DELAY) {
draw = true;
Terminal::cursor(false);
Message::mstream(false) << "\n";
}
if (draw && ((System::time() - time > 0.05) || id == 0)) {
const size_t DIGITS=6;
Message::mstream(false, Message::MC_PROGRESS)
<< string(DIGITS-min(DIGITS, static_cast<size_t>(log10(count))), ' ')
<< count << " PostScript instructions processed\r";
// overprint indicator when finished
if (id == 0) {
Message::estream().clearline();
Terminal::cursor(true);
}
time = System::time();
}
}
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