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/* This is extractbb, a bounding box extraction program.
Copyright (C) 2008-2014 by Jin-Hwan Cho and Matthias Franz
and the dvipdfmx project team.
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/>.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <time.h>
#include <string.h>
#include "numbers.h"
#include "system.h"
#include "mem.h"
#include "error.h"
#include "mfileio.h"
#include "pdfobj.h"
#include "pdfdoc.h"
#include "pdfparse.h"
#include "bmpimage.h"
#include "jpegimage.h"
#include "jp2image.h"
#include "pngimage.h"
#include "dvipdfmx.h"
#include "pdflimits.h"
#define XBB_PROGRAM "extractbb"
static void show_version(void)
{
fprintf (stdout, "\nThis is " XBB_PROGRAM " Version " VERSION "\n");
fprintf (stdout, "A bounding box extraction utility from PDF, PNG, and JPEG.\n");
fprintf (stdout, "\nCopyright (C) 2008-2014 by Jin-Hwan Cho and Matthias Franz\n");
fprintf (stdout, "\nThis is free software; you can redistribute it and/or modify\n");
fprintf (stdout, "it under the terms of the GNU General Public License as published by\n");
fprintf (stdout, "the Free Software Foundation; either version 2 of the License, or\n");
fprintf (stdout, "(at your option) any later version.\n");
}
static void show_usage(void)
{
fprintf (stdout, "\nUsage: " XBB_PROGRAM " [-q|-v] [-O] [-m|-x] file...\n");
fprintf (stdout, " " XBB_PROGRAM " --help|--version\n");
fprintf (stdout, "\nOptions:\n");
fprintf (stdout, " -h | --help\tShow this help message and exit\n");
fprintf (stdout, " --version\tOutput version information and exit\n");
fprintf (stdout, " -q\t\tBe quiet\n");
fprintf (stdout, " -v\t\tBe verbose\n");
fprintf (stdout, " -O\t\tWrite output to stdout\n");
fprintf (stdout, " -m\t\tOutput .bb file used in DVIPDFM%s\n", compat_mode ? " (default)" : "");
fprintf (stdout, " -x\t\tOutput .xbb file used in DVIPDFMx%s\n", compat_mode ? "" : " (default)");
}
static void usage(void)
{
fprintf(stdout, "\nTry \"" XBB_PROGRAM " --help\" for more information.\n");
exit(1);
}
static char verbose = 0;
static void do_time(FILE *file)
{
time_t current_time;
struct tm *bd_time;
time(¤t_time);
bd_time = localtime(¤t_time);
fprintf(file, "%%%%CreationDate: %s\n", asctime(bd_time));
}
const char *extensions[] = {
".ai", ".AI", ".bmp", ".BMP", ".jpeg", ".JPEG", ".jpg", ".JPG",
".jp2", ".JP2", ".jpf", ".JPF", ".pdf", ".PDF", ".png", ".PNG"
};
static int xbb_to_file = 1;
static char *make_xbb_filename(const char *name)
{
int i;
char *result;
for (i = 0; i < sizeof(extensions) / sizeof(extensions[0]); i++) {
if (strlen(extensions[i]) < strlen(name) &&
strncmp(name+strlen(name)-strlen(extensions[i]), extensions[i], strlen(extensions[i])) == 0)
break;
}
if (i == sizeof(extensions) / sizeof(extensions[0])) {
WARN("%s: Filename does not end in a recognizable extension.\n", name);
result = NEW(strlen(name)+5, char); /* 5 = ".xbb" + trailing 0 */
strcpy(result, name);
} else { /* Remove extension */
result = NEW(strlen(name)-strlen(extensions[i])+5, char); /* 5 = ".xbb" + trailing 0 */
strncpy(result, name, strlen(name)-strlen(extensions[i]));
result[strlen(name)-strlen(extensions[i])] = 0;
}
strcat(result, (compat_mode ? ".bb" : ".xbb"));
return result;
}
static void write_xbb(char *fname,
double bbllx_f, double bblly_f,
double bburx_f, double bbury_f,
int pdf_version, long pagecount)
{
char *outname = NULL;
FILE *fp = NULL;
long bbllx = ROUND(bbllx_f, 1.0), bblly = ROUND(bblly_f, 1.0);
long bburx = ROUND(bburx_f, 1.0), bbury = ROUND(bbury_f, 1.0);
if (xbb_to_file) {
outname = make_xbb_filename(fname);
if (!kpse_out_name_ok(outname) || !(fp = MFOPEN(outname, FOPEN_W_MODE))) {
ERROR("Unable to open output file: %s\n", outname);
}
} else {
fp = stdout;
#ifdef WIN32
setmode(fileno(fp), _O_BINARY);
#endif
}
if (verbose) {
MESG("Writing to %s: ", xbb_to_file ? outname : "stdout");
MESG("Bounding box: %d %d %d %d\n", bbllx, bblly, bburx, bbury);
}
fprintf(fp, "%%%%Title: %s\n", fname);
fprintf(fp, "%%%%Creator: %s %s\n", XBB_PROGRAM, VERSION);
fprintf(fp, "%%%%BoundingBox: %ld %ld %ld %ld\n", bbllx, bblly, bburx, bbury);
if (!compat_mode) {
/* Note:
* According to Adobe Technical Note #5644, the arguments to
* "%%HiResBoundingBox:" must be of type real. And according
* to the PostScript Language Reference, a real number must
* be written with a decimal point (or an exponent). Hence
* it seems illegal to replace "0.0" by "0".
*/
fprintf(fp, "%%%%HiResBoundingBox: %f %f %f %f\n",
bbllx_f, bblly_f, bburx_f, bbury_f);
if (pdf_version >= 0) {
fprintf(fp, "%%%%PDFVersion: 1.%d\n", pdf_version);
fprintf(fp, "%%%%Pages: %ld\n", pagecount);
}
}
do_time(fp);
if (xbb_to_file) {
RELEASE(outname);
MFCLOSE(fp);
}
}
static void do_bmp (FILE *fp, char *filename)
{
int width, height;
double xdensity, ydensity;
if (bmp_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
WARN("%s does not look like a BMP file...\n", filename);
return;
}
write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
return;
}
static void do_jpeg (FILE *fp, char *filename)
{
long width, height;
double xdensity, ydensity;
if (jpeg_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
WARN("%s does not look like a JPEG file...\n", filename);
return;
}
write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
return;
}
static void do_jp2 (FILE *fp, char *filename)
{
int width, height;
double xdensity, ydensity;
if (jp2_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
WARN("%s does not look like a JP2/JPX file...\n", filename);
return;
}
write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
return;
}
#ifdef HAVE_LIBPNG
static void do_png (FILE *fp, char *filename)
{
long width, height;
double xdensity, ydensity;
if (png_get_bbox(fp, &width, &height, &xdensity, &ydensity) < 0) {
WARN("%s does not look like a PNG file...\n", filename);
return;
}
write_xbb(filename, 0, 0, xdensity*width, ydensity*height, -1, -1);
return;
}
#endif /* HAVE_LIBPNG */
static void do_pdf (FILE *fp, char *filename)
{
pdf_obj *page;
pdf_file *pf;
long page_no = 1;
long count;
pdf_rect bbox;
pf = pdf_open(filename, fp);
if (!pf) {
WARN("%s does not look like a PDF file...\n", filename);
return;
}
page = pdf_doc_get_page(pf, page_no, &count, &bbox, NULL);
pdf_close(pf);
if (!page)
return;
pdf_release_obj(page);
write_xbb(filename, bbox.llx, bbox.lly, bbox.urx, bbox.ury,
pdf_file_get_version(pf), count);
}
int extractbb (int argc, char *argv[])
{
pdf_files_init();
pdf_set_version(PDF_VERSION_MAX);
argc -= 1; argv += 1;
while (argc > 0 && *argv[0] == '-') {
char *flag;
for (flag = argv[0] + 1; *flag != 0; flag++) {
switch (*flag) {
case '-':
if (flag == argv[0] + 1) {
++flag;
if (!strcmp(flag, "help")) {
show_usage();
exit(0);
} else if (!strcmp(flag, "version")) {
show_version();
exit(0);
}
}
fprintf(stderr, "Unknown option \"%s\"", argv[0]);
usage();
case 'O':
xbb_to_file = 0;
break;
case 'b': /* Ignored for backward compatibility */
break;
case 'm':
compat_mode = 1;
break;
case 'x':
compat_mode = 0;
break;
case 'v':
verbose = 1;
break;
case 'h':
show_usage();
exit (0);
default:
fprintf (stderr, "Unknown option in \"%s\"", argv[0]);
usage();
}
}
argc -= 1; argv += 1;
}
if (argc == 0) {
fprintf (stderr, "Missing filename argument\n");
usage();
}
for (; argc > 0; argc--, argv++) {
FILE *infile = NULL;
char *kpse_file_name = NULL;
if (kpse_in_name_ok(argv[0])) {
infile = MFOPEN(argv[0], FOPEN_RBIN_MODE);
if (infile) {
kpse_file_name = xstrdup(argv[0]);
} else {
kpse_file_name = kpse_find_pict(argv[0]);
if (kpse_file_name && kpse_in_name_ok(kpse_file_name))
infile = MFOPEN(kpse_file_name, FOPEN_RBIN_MODE);
}
}
if (infile == NULL) {
WARN("Can't find file (%s), or it is forbidden to read ...skipping\n", argv[0]);
goto cont;
}
if (check_for_bmp(infile)) {
do_bmp(infile, kpse_file_name);
goto cont;
}
if (check_for_jpeg(infile)) {
do_jpeg(infile, kpse_file_name);
goto cont;
}
if (check_for_jp2(infile)) {
do_jp2(infile, kpse_file_name);
goto cont;
}
if (check_for_pdf(infile)) {
do_pdf(infile, kpse_file_name);
goto cont;
}
#ifdef HAVE_LIBPNG
if (check_for_png(infile)) {
do_png(infile, kpse_file_name);
goto cont;
}
#endif /* HAVE_LIBPNG */
WARN("Can't handle file type for file named %s\n", argv[0]);
cont:
if (kpse_file_name)
RELEASE(kpse_file_name);
if (infile)
MFCLOSE(infile);
}
pdf_files_close();
return 0;
}
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