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-rw-r--r--Build/source/texk/dvisvgm/dvisvgm-src/src/PDFToSVG.cpp92
1 files changed, 92 insertions, 0 deletions
diff --git a/Build/source/texk/dvisvgm/dvisvgm-src/src/PDFToSVG.cpp b/Build/source/texk/dvisvgm/dvisvgm-src/src/PDFToSVG.cpp
new file mode 100644
index 00000000000..b0e3df58ba8
--- /dev/null
+++ b/Build/source/texk/dvisvgm/dvisvgm-src/src/PDFToSVG.cpp
@@ -0,0 +1,92 @@
+/*************************************************************************
+** PDFToSVG.cpp **
+** **
+** This file is part of dvisvgm -- a fast DVI to SVG converter **
+** Copyright (C) 2005-2023 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 <cstdlib>
+#include "Message.hpp"
+#include "PDFToSVG.hpp"
+
+using namespace std;
+
+
+PDFToSVG::PDFToSVG (const string &fname, SVGOutputBase &out) : ImageToSVG(fname, out) {
+ _useGS = (gsVersion() > 0 && gsVersion() < 10010);
+ if (const char *pdfproc = getenv("DVISVGM_PDF_PROC")) {
+ if (strcmp(pdfproc, "gs") == 0)
+ _useGS = true;
+ else if (strcmp(pdfproc, "mutool") == 0)
+ _useGS = false;
+ }
+ if (!_useGS)
+ _pdfHandler.assignSVGTree(_svg);
+}
+
+
+void PDFToSVG::checkGSAndFileFormat () {
+ if (_useGS)
+ ImageToSVG::checkGSAndFileFormat();
+ else {
+ if (!PDFHandler::available()) {
+ ostringstream oss;
+ if (gsVersion() > 0) {
+ oss << "To process PDF files, either Ghostscript < 10.1 or mutool is required.\n";
+ oss << "The installed Ghostscript version " << Ghostscript().revisionstr() << " isn't supported.\n";
+ throw MessageException(oss.str());
+ }
+ }
+ }
+ if (!imageIsValid())
+ throw MessageException("invalid "+imageFormat()+" file");
+}
+
+
+/** Returns the total number of pages in the PDF file. */
+int PDFToSVG::totalPageCount () const {
+ if (_totalPageCount < 0) {
+ _totalPageCount = psInterpreter().pdfPageCount(filename());
+ if (_totalPageCount < 1)
+ throw MessageException("can't retrieve number of pages from file " + filename());
+ }
+ return _totalPageCount;
+}
+
+
+bool PDFToSVG::imageIsValid () const {
+ ifstream ifs(filename());
+ if (ifs) {
+ char buf[16];
+ ifs.getline(buf, 16);
+ return std::strncmp(buf, "%PDF-1.", 7) == 0;
+ }
+ return false;
+}
+
+
+void PDFToSVG::convert (int pageno) {
+ if (_useGS)
+ ImageToSVG::convert(pageno);
+ else {
+ Message::mstream().indent(0);
+ Message::mstream(false, Message::MC_PAGE_NUMBER) << "processing PDF file\n";
+ Message::mstream().indent(1);
+ _pdfHandler.convert(filename(), pageno);
+ embed(_pdfHandler.bbox());
+ writeSVG(pageno);
+ }
+} \ No newline at end of file