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Diffstat (limited to 'Build/source/texk/dvipdf-x/xsrc/xbb.c')
-rw-r--r--Build/source/texk/dvipdf-x/xsrc/xbb.c511
1 files changed, 0 insertions, 511 deletions
diff --git a/Build/source/texk/dvipdf-x/xsrc/xbb.c b/Build/source/texk/dvipdf-x/xsrc/xbb.c
deleted file mode 100644
index f447d3a0170..00000000000
--- a/Build/source/texk/dvipdf-x/xsrc/xbb.c
+++ /dev/null
@@ -1,511 +0,0 @@
-/*
-
- This is extractbb, a bounding box extraction program.
-
- Copyright (C) 2008-2012 by Jin-Hwan Cho <chofchof@ktug.or.kr>
-
- 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, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-#include <stdio.h>
-#include <time.h>
-#include <string.h>
-#include "system.h"
-#include "mem.h"
-#include "error.h"
-#include "mfileio.h"
-#include "numbers.h"
-#include "pdfobj.h"
-#include "pdfparse.h"
-
-#include "config.h"
-
-#ifdef HAVE_LIBPNG
-#include <png.h>
-#endif
-
-#include "xbb.h"
-
-#define XBB_PROGRAM "extractbb"
-#define XBB_VERSION "Version 0.2"
-
-static int xbb_output_mode = XBB_OUTPUT;
-
-static void usage(void)
-{
- fprintf (stderr, "%s, version %s, Copyright (C) 2008 by Jin-Hwan Cho\n",
- XBB_PROGRAM, XBB_VERSION);
- fprintf (stderr, "A bounding box extraction utility from PDF, PNG, and JPG.\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");
- fprintf (stderr, "\nUsage: %s [-v] [-b] [-m|-x] [files]\n", XBB_PROGRAM);
- fprintf (stderr, "\t-b\tWrite output file in binary mode\n");
- if(xbb_output_mode == EBB_OUTPUT) {
- fprintf (stderr, "\t-m\tOutput .bb file used in DVIPDFM (default)\n");
- fprintf (stderr, "\t-x\tOutput .xbb file used in DVIPDFMx\n");
- } else {
- fprintf (stderr, "\t-m\tOutput .bb file used in DVIPDFM\n");
- fprintf (stderr, "\t-x\tOutput .xbb file used in DVIPDFMx (default)\n");
- }
- fprintf (stderr, "\t-v\tVerbose\n");
- exit(1);
-}
-
-static char verbose = 0;
-
-static void do_time(FILE *file)
-{
- time_t current_time;
- struct tm *bd_time;
-
- time(&current_time);
- bd_time = localtime(&current_time);
- fprintf(file, "%%%%CreationDate: %s\n", asctime(bd_time));
-}
-
-const char *extensions[] = {
- ".jpeg", ".JPEG", ".jpg", ".JPG", ".pdf", ".PDF", ".png", ".PNG"
-};
-
-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])) {
- fprintf(stderr, "Warning: %s: Filename does not end in a recognizeable extension.\n", name);
- result = NEW(strlen(name)+3, char);
- strcpy(result, name);
- } else { /* Remove extension */
- result = NEW(strlen(name)+3-strlen(extensions[i])+1, char);
- strncpy(result, name, strlen(name)-strlen(extensions[i]));
- result[strlen(name)-strlen(extensions[i])] = 0;
- }
- strcat(result, (xbb_output_mode == XBB_OUTPUT ? ".xbb" : ".bb"));
- return result;
-}
-
-static const char *xbb_file_mode = FOPEN_W_MODE;
-
-static void write_xbb(char *fname, int bbllx, int bblly, int bburx, int bbury)
-{
- char *outname;
- FILE *fp;
-
- outname = make_xbb_filename(fname);
- if ((fp = MFOPEN(outname, xbb_file_mode)) == NULL) {
- fprintf(stderr, "Unable to open output file: %s\n", outname);
- RELEASE(outname);
- return;
- }
- if (verbose) {
- fprintf(stderr, "Writing to %s: ", outname);
- fprintf(stderr, "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, XBB_VERSION);
- fprintf(fp,"%%%%BoundingBox: %d %d %d %d\n", bbllx, bblly, bburx, bbury);
- do_time(fp);
- RELEASE(outname);
- MFCLOSE(fp);
-}
-
-typedef enum {
- JM_SOF0 = 0xc0, JM_SOF1 = 0xc1, JM_SOF2 = 0xc2, JM_SOF3 = 0xc3,
- JM_SOF5 = 0xc5, JM_DHT = 0xc4, JM_SOF6 = 0xc6, JM_SOF7 = 0xc7,
- JM_SOF9 = 0xc9, JM_SOF10 = 0xca, JM_SOF11 = 0xcb, JM_DAC = 0xcc,
- JM_SOF13 = 0xcd, JM_SOF14 = 0xce, JM_SOF15 = 0xcf,
-
- JM_RST0 = 0xd0, JM_RST1 = 0xd1, JM_RST2 = 0xd2, JM_RST3 = 0xd3,
- JM_RST4 = 0xd4, JM_RST5 = 0xd5, JM_RST6 = 0xd6, JM_RST7 = 0xd7,
-
- JM_SOI = 0xd8, JM_EOI = 0xd9, JM_SOS = 0xda, JM_DQT = 0xdb,
- JM_DNL = 0xdc, JM_DRI = 0xdd, JM_DHP = 0xde, JM_EXP = 0xdf,
-
- JM_APP0 = 0xe0, JM_APP2 = 0xe2, JM_APP14 = 0xee, JM_APP15 = 0xef,
-
- JM_COM = 0xfe
-} JPEG_marker;
-
-static JPEG_marker JPEG_get_marker (FILE *fp)
-{
- int c = fgetc(fp);
- if (c != 255) return -1;
- for (;;) {
- c = fgetc(fp);
- if (c < 0) return -1;
- else if (c > 0 && c < 255) return c;
- }
- return -1;
-}
-
-static int check_for_jpeg (FILE *fp)
-{
- unsigned char jpeg_sig[2];
- rewind(fp);
- if (fread(jpeg_sig, sizeof(unsigned char), 2, fp) != 2) return 0;
- else if (jpeg_sig[0] != 0xff || jpeg_sig[1] != JM_SOI) return 0;
- return 1;
-}
-
-static int jpeg_get_info (FILE *fp, int *width, int *height)
-{
- JPEG_marker marker;
- unsigned short length;
- int count;
- float xdensity = 1.0, ydensity = 1.0;
- char app_sig[128];
-
- if (!check_for_jpeg(fp)) {
- rewind(fp);
- return -1;
- }
- rewind(fp);
- count = 0;
- while ((marker = JPEG_get_marker(fp)) >= 0) {
- if (marker == JM_SOI || (marker >= JM_RST0 && marker <= JM_RST7)) {
- count++; continue;
- }
- length = get_unsigned_pair(fp) - 2;
- switch (marker) {
- case JM_SOF0: case JM_SOF1: case JM_SOF2: case JM_SOF3:
- case JM_SOF5: case JM_SOF6: case JM_SOF7: case JM_SOF9:
- case JM_SOF10: case JM_SOF11: case JM_SOF13: case JM_SOF14:
- case JM_SOF15:
- get_unsigned_byte(fp);
- if (xbb_output_mode != XBB_OUTPUT) { /* EBB_OUTPUT */
- xdensity = ydensity = 72.0 / 100.0;
- }
- *height = (int)(get_unsigned_pair(fp) * ydensity + 0.5);
- *width = (int)(get_unsigned_pair(fp) * xdensity + 0.5);
- return 0;
- case JM_APP0:
- if (length > 5) {
- if (fread(app_sig, sizeof(char), 5, fp) != 5) return -1;
- length -= 5;
- if (!memcmp(app_sig, "JFIF\000", 5)) {
- int units, xden, yden;
- get_unsigned_pair(fp);
- units = (int)get_unsigned_byte(fp);
- xden = (int)get_unsigned_pair(fp);
- yden = (int)get_unsigned_pair(fp);
- switch (units) {
- case 1: /* pixels per inch */
- xdensity = 72.0 / xden;
- ydensity = 72.0 / yden;
- break;
- case 2: /* pixels per centimeter */
- xdensity = 72.0 / 2.54 / xden;
- ydensity = 72.0 / 2.54 / yden;
- break;
- default:
- break;
- }
- length -= 7;
- }
- }
- seek_relative(fp, length);
- break;
- default:
- seek_relative(fp, length);
- break;
- }
- count++;
- }
- return -1;
-}
-
-static void do_jpeg (FILE *fp, char *filename)
-{
- int width, height;
-
- if (jpeg_get_info(fp, &width, &height) < 0) {
- fprintf (stderr, "%s does not look like a JPEG file...\n", filename);
- return;
- }
- write_xbb(filename, 0, 0, width, height);
- return;
-}
-
-#ifdef HAVE_LIBPNG
-static int check_for_png (FILE *png_file)
-{
- unsigned char sigbytes[4];
- rewind (png_file);
- if (fread(sigbytes, 1, sizeof(sigbytes), png_file) != sizeof(sigbytes) ||
- (png_sig_cmp (sigbytes, 0, sizeof(sigbytes)))) return 0;
- else return 1;
-}
-
-static int png_get_info(FILE *png_file, int *width, int *height)
-{
- png_structp png_ptr;
- png_infop png_info_ptr;
- png_uint_32 xppm, yppm;
-
- rewind(png_file);
-
- png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
- if (png_ptr == NULL || (png_info_ptr = png_create_info_struct(png_ptr)) == NULL) {
- if (png_ptr) png_destroy_read_struct(&png_ptr, NULL, NULL);
- return -1;
- }
- png_init_io(png_ptr, png_file);
- png_read_info(png_ptr, png_info_ptr);
-
- *width = (int)png_get_image_width(png_ptr, png_info_ptr);
- *height = (int)png_get_image_height(png_ptr, png_info_ptr);
-
- if (xbb_output_mode == XBB_OUTPUT) {
- xppm = png_get_x_pixels_per_meter(png_ptr, png_info_ptr);
- yppm = png_get_y_pixels_per_meter(png_ptr, png_info_ptr);
- if (xppm > 0)
- *width = (int)(*width * 72.0 / 0.0254 / xppm + 0.5);
- if (yppm > 0)
- *height = (int)(*height * 72.0 / 0.0254 / yppm + 0.5);
- } else { /* EBB_OUTPUT */
- *width = (int)(*width * 72.0 / 100.0 + 0.5);
- *height = (int)(*height * 72.0 / 100.0 + 0.5);
- }
- return 0;
-}
-
-static void do_png (FILE *fp, char *filename)
-{
- int width, height;
-
- if (png_get_info(fp, &width, &height) < 0) {
- fprintf (stderr, "%s does not look like a PNG file...\n", filename);
- return;
- }
- write_xbb(filename, 0, 0, width, height);
- return;
-}
-#endif /* HAVE_LIBPNG */
-
-static int rect_equal (pdf_obj *rect1, pdf_obj *rect2)
-{
- int i;
- if (!rect1 || !rect2) return 0;
- for (i = 0; i < 4; i++) {
- if (pdf_number_value(pdf_get_array(rect1, i)) != pdf_number_value(pdf_get_array(rect2, i))) return 0;
- }
- return 1;
-}
-
-static int pdf_get_info (FILE *image_file, char *filename, int *llx, int *lly, int *urx, int *ury)
-{
- pdf_obj *page_tree;
- pdf_obj *bbox;
- pdf_file *pf;
-
- page_tree = NULL;
- {
- pdf_obj *trailer, *catalog;
-
- pf = pdf_open(filename, image_file);
- if (!pf)
- return -1;
-
- trailer = pdf_file_get_trailer(pf);
-
- if (pdf_lookup_dict(trailer, "Encrypt")) {
- WARN("This PDF document is encrypted.");
- pdf_release_obj(trailer);
- pdf_close(pf);
- return -1;
- }
- catalog = pdf_deref_obj(pdf_lookup_dict(trailer, "Root"));
- if (!catalog) {
- WARN("Catalog isn't where I expect it.");
- pdf_close(pf);
- return -1;
- }
- pdf_release_obj(trailer);
- page_tree = pdf_deref_obj(pdf_lookup_dict(catalog, "Pages"));
- pdf_release_obj(catalog);
- }
- if (!page_tree) {
- WARN("Page tree not found.");
- pdf_close(pf);
- return -1;
- }
- {
- pdf_obj *kids_ref, *kids;
- pdf_obj *crop_box;
- pdf_obj *tmp;
-
- tmp = pdf_lookup_dict(page_tree, "MediaBox");
- bbox = tmp ? pdf_deref_obj(tmp) : NULL;
- tmp = pdf_lookup_dict(page_tree, "CropBox");
- crop_box = tmp ? pdf_deref_obj(tmp) : NULL;
-
- while ((kids_ref = pdf_lookup_dict(page_tree, "Kids")) != NULL) {
- kids = pdf_deref_obj(kids_ref);
- pdf_release_obj(page_tree);
- page_tree = pdf_deref_obj(pdf_get_array(kids, 0));
- pdf_release_obj(kids);
-
- if ((tmp = pdf_deref_obj(pdf_lookup_dict(page_tree, "MediaBox")))) {
- if (bbox)
- pdf_release_obj(bbox);
- bbox = tmp;
- }
- if ((tmp = pdf_deref_obj(pdf_lookup_dict(page_tree, "BleedBox")))) {
- if (!rect_equal(tmp, bbox)) {
- if (bbox)
- pdf_release_obj(bbox);
- bbox = tmp;
- } else
- pdf_release_obj(tmp);
- }
- if ((tmp = pdf_deref_obj(pdf_lookup_dict(page_tree, "TrimBox")))) {
- if (!rect_equal(tmp, bbox)) {
- if (bbox)
- pdf_release_obj(bbox);
- bbox = tmp;
- } else
- pdf_release_obj(tmp);
- }
- if ((tmp = pdf_deref_obj(pdf_lookup_dict(page_tree, "ArtBox")))) {
- if (!rect_equal(tmp, bbox)) {
- if (bbox)
- pdf_release_obj(bbox);
- bbox = tmp;
- } else
- pdf_release_obj(tmp);
- }
- if ((tmp = pdf_deref_obj(pdf_lookup_dict(page_tree, "CropBox")))) {
- if (crop_box)
- pdf_release_obj(crop_box);
- crop_box = tmp;
- }
- }
- if (crop_box) {
- pdf_release_obj(bbox);
- bbox = crop_box;
- }
- }
- pdf_release_obj(page_tree);
-
- if (!bbox) {
- WARN("No BoundingBox information available.");
- pdf_close(pf);
- return -1;
- }
-
- *llx = (int)pdf_number_value(pdf_get_array(bbox, 0));
- *lly = (int)pdf_number_value(pdf_get_array(bbox, 1));
- *urx = (int)pdf_number_value(pdf_get_array(bbox, 2));
- *ury = (int)pdf_number_value(pdf_get_array(bbox, 3));
-
- pdf_release_obj(bbox);
-
- pdf_close(pf);
- return 0;
-}
-
-static void do_pdf (FILE *fp, char *filename)
-{
- int llx, lly, urx, ury;
-
- if (pdf_get_info(fp, filename, &llx, &lly, &urx, &ury) < 0) {
- fprintf (stderr, "%s does not look like a PDF file...\n", filename);
- return;
- }
- write_xbb(filename, llx, lly, urx, ury);
- return;
-}
-
-int extractbb (int argc, char *argv[], int mode)
-{
- xbb_output_mode = mode;
-
- pdf_files_init();
-
- pdf_set_version(5);
-
- kpse_set_program_name(argv[0], NULL);
-
- argc -= 1; argv += 1;
- if (argc == 0)
- usage();
-
- while (argc > 0 && *argv[0] == '-') {
- switch (*(argv[0]+1)) {
- case 'b':
- xbb_file_mode = FOPEN_WBIN_MODE;
- argc -= 1; argv += 1;
- break;
- case 'm':
- xbb_output_mode = EBB_OUTPUT;
- argc -= 1; argv += 1;
- break;
- case 'x':
- xbb_output_mode = XBB_OUTPUT;
- argc -= 1; argv += 1;
- break;
- case 'v':
- verbose = 1;
- argc -= 1; argv += 1;
- break;
- case 'h':
- usage();
- argc -= 1; argv += 1;
- break;
- default:
- usage();
- }
- }
- for (; argc > 0; argc--, argv++) {
- FILE *infile = NULL;
- char *kpse_file_name;
- if (!(kpse_file_name = kpse_find_pict(argv[0])) ||
- (infile = MFOPEN(kpse_file_name, FOPEN_RBIN_MODE)) == NULL) {
- fprintf(stderr, "Can't find file (%s)...skipping\n", argv[0]);
- goto cont;
- }
- if (check_for_jpeg(infile)) {
- do_jpeg(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 */
- fprintf(stderr, "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;
-}