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// Copyright (C) 2007-2013 David Barton (davebarton@cityinthesky.co.uk)
// <http://www.cityinthesky.co.uk/>
// Copyright (C) 2007 Matthew Flaschen (matthew.flaschen@gatech.edu)
// Updated to allow conversion of all pages at once.
// 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 2 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/>.
// Definitely works with Cairo v1.2.6 and Poppler 0.5.4
#include <assert.h>
#include <stdlib.h>
#include <glib.h>
#include <poppler.h>
#include <poppler-document.h>
#include <poppler-page.h>
#include <cairo.h>
#include <cairo-svg.h>
#include <stdio.h>
#include <string.h>
// Begin theft from ePDFview (Copyright (C) 2006 Emma's Software) under the GPL
gchar *getAbsoluteFileName(const gchar *fileName)
{
gchar *absoluteFileName = NULL;
if (g_path_is_absolute(fileName)) {
absoluteFileName = g_strdup(fileName);
}
else {
gchar *currentDir = g_get_current_dir();
absoluteFileName = g_build_filename(currentDir, fileName, NULL);
g_free(currentDir);
}
return absoluteFileName;
}
// End theft from ePDFview
int convertPage(PopplerPage *page, const char* svgFilename)
{
// Poppler stuff
double width, height;
// Cairo stuff
cairo_surface_t *surface;
cairo_t *drawcontext;
if (page == NULL) {
fprintf(stderr, "Page does not exist\n");
return -1;
}
poppler_page_get_size (page, &width, &height);
// Open the SVG file
surface = cairo_svg_surface_create(svgFilename, width, height);
cairo_svg_surface_set_document_unit(surface, CAIRO_SVG_UNIT_PT);
drawcontext = cairo_create(surface);
// Render the PDF file into the SVG file
poppler_page_render_for_printing(page, drawcontext);
cairo_show_page(drawcontext);
// Close the SVG file
cairo_destroy(drawcontext);
cairo_surface_destroy(surface);
// Close the PDF file
g_object_unref(page);
return 0;
}
int main(int argn, char *args[])
{
// Poppler stuff
PopplerDocument *pdffile;
PopplerPage *page;
// Initialise the GType library
g_type_init ();
// Get command line arguments
if ((argn < 3)||(argn > 4)) {
printf("Usage: pdf2svg <in file.pdf> <out file.svg> [<page no>]\n");
return -2;
}
gchar *absoluteFileName = getAbsoluteFileName(args[1]);
gchar *filename_uri = g_filename_to_uri(absoluteFileName, NULL, NULL);
gchar *pageLabel = NULL;
char* svgFilename = args[2];
g_free(absoluteFileName);
if (argn == 4) {
// Get page number
pageLabel = g_strdup(args[3]);
}
// Open the PDF file
pdffile = poppler_document_new_from_file(filename_uri, NULL, NULL);
g_free(filename_uri);
if (pdffile == NULL) {
fprintf(stderr, "Unable to open file\n");
return -3;
}
int conversionErrors = 0;
// Get the page
if(pageLabel == NULL) {
page = poppler_document_get_page(pdffile, 0);
conversionErrors = convertPage(page, svgFilename);
}
else {
if(strcmp(pageLabel, "all") == 0) {
int curError;
int pageCount = poppler_document_get_n_pages(pdffile);
if(pageCount > 9999999) {
fprintf(stderr, "Too many pages (>9,999,999)\n");
return -5;
}
size_t svgFilenameBufLen = strlen(svgFilename) + 1;
char *svgFilenameBuffer = (char*)malloc(svgFilenameBufLen);
assert(svgFilenameBuffer != NULL);
int pageInd;
for(pageInd = 0; pageInd < pageCount; pageInd++) {
while (1) {
size_t _wr_len = snprintf(svgFilenameBuffer, svgFilenameBufLen, svgFilename, pageInd + 1);
if (_wr_len >= svgFilenameBufLen) {
svgFilenameBufLen = _wr_len + 1;
svgFilenameBuffer = (char*)realloc(svgFilenameBuffer, svgFilenameBufLen);
assert(svgFilenameBuffer != NULL);
continue;
}
break;
}
page = poppler_document_get_page(pdffile, pageInd);
curError = convertPage(page, svgFilenameBuffer);
if(curError != 0)
conversionErrors = -1;
}
free(svgFilenameBuffer);
}
else {
page = poppler_document_get_page_by_label(pdffile, pageLabel);
conversionErrors = convertPage(page, svgFilename);
g_free(pageLabel);
}
}
g_object_unref(pdffile);
if(conversionErrors != 0) {
return -4;
}
else {
return 0;
}
}
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