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/*
* PDF cleaning tool: general purpose pdf syntax washer.
*
* Rewrite PDF with pretty printed objects.
* Garbage collect unreachable objects.
* Inflate compressed streams.
* Create subset documents.
*
* TODO: linearize document for fast web view
*/
#include "mupdf/fitz.h"
#include "mupdf/pdf.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
static void usage(void)
{
fprintf(stderr,
"usage: mutool clean [options] input.pdf [output.pdf] [pages]\n"
"\t-p -\tpassword\n"
"\t-g\tgarbage collect unused objects\n"
"\t-gg\tin addition to -g compact xref table\n"
"\t-ggg\tin addition to -gg merge duplicate objects\n"
"\t-gggg\tin addition to -ggg check streams for duplication\n"
"\t-l\tlinearize PDF\n"
"\t-a\tascii hex encode binary streams\n"
"\t-d\tdecompress streams\n"
"\t-z\tdeflate uncompressed streams\n"
"\t-f\tcompress font streams\n"
"\t-i\tcompress image streams\n"
"\t-s\tclean content streams\n"
"\tpages\tcomma separated list of page numbers and ranges\n"
);
exit(1);
}
int pdfclean_main(int argc, char **argv)
{
char *infile;
char *outfile = "out.pdf";
char *password = "";
int c;
pdf_write_options opts = { 0 };
int errors = 0;
fz_context *ctx;
opts.continue_on_error = 1;
opts.errors = &errors;
while ((c = fz_getopt(argc, argv, "adfgilp:sz")) != -1)
{
switch (c)
{
case 'p': password = fz_optarg; break;
case 'd': opts.do_decompress += 1; break;
case 'z': opts.do_compress += 1; break;
case 'f': opts.do_compress_fonts += 1; break;
case 'i': opts.do_compress_images += 1; break;
case 'a': opts.do_ascii += 1; break;
case 'g': opts.do_garbage += 1; break;
case 'l': opts.do_linear += 1; break;
case 's': opts.do_clean += 1; break;
default: usage(); break;
}
}
if ((opts.do_ascii || opts.do_decompress) && !opts.do_compress)
opts.do_pretty = 1;
if (argc - fz_optind < 1)
usage();
infile = argv[fz_optind++];
if (argc - fz_optind > 0 &&
(strstr(argv[fz_optind], ".pdf") || strstr(argv[fz_optind], ".PDF")))
{
outfile = argv[fz_optind++];
}
ctx = fz_new_context(NULL, NULL, FZ_STORE_UNLIMITED);
if (!ctx)
{
fprintf(stderr, "cannot initialise context\n");
exit(1);
}
fz_try(ctx)
{
pdf_clean_file(ctx, infile, outfile, password, &opts, &argv[fz_optind], argc - fz_optind);
}
fz_catch(ctx)
{
errors++;
}
fz_drop_context(ctx);
return errors != 0;
}
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