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/*************************************************************************
** PDFToSVG.hpp **
** **
** This file is part of dvisvgm -- a fast DVI to SVG converter **
** Copyright (C) 2005-2022 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/>. **
*************************************************************************/
#ifndef PDFTOSVG_HPP
#define PDFTOSVG_HPP
#include <fstream>
#include "ImageToSVG.hpp"
class PsSpecialHandler;
class PDFToSVG : public ImageToSVG {
public:
PDFToSVG (const std::string &fname, SVGOutputBase &out) : ImageToSVG(fname, out) {}
bool isSinglePageFormat() const override {return false;}
/** Returns the total number of pages in the PDF file. */
int totalPageCount() const override {
if (_totalPageCount < 0) {
_totalPageCount = psInterpreter().pdfPageCount(filename());
if (_totalPageCount < 1)
throw MessageException("can't retrieve number of pages from file " + filename());
}
return _totalPageCount;
}
protected:
bool imageIsValid () const override {
std::ifstream ifs(filename());
if (ifs) {
char buf[16];
ifs.getline(buf, 16);
return std::strncmp(buf, "%PDF-1.", 7) == 0;
}
return false;
}
std::string imageFormat () const override {return "PDF";}
BoundingBox imageBBox () const override {return BoundingBox();}
std::string psSpecialCmd () const override {return "pdffile=";}
private:
mutable int _totalPageCount = -1;
};
#endif
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