diff options
Diffstat (limited to 'Build/source/texk/dvipdf-x/xsrc/xbb.c')
-rw-r--r-- | Build/source/texk/dvipdf-x/xsrc/xbb.c | 511 |
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(¤t_time); - bd_time = localtime(¤t_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; -} |