/* 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 . */ #ifdef HAVE_CONFIG_H #include #endif #include #include #include #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 long Include_Page = 1; static void show_version(void) { fprintf (stdout, "\nThis is " XBB_PROGRAM " Version " VERSION "\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 " [-p page] [-q|-v] [-O] [-m|-x] FILE...\n"); fprintf (stdout, " " XBB_PROGRAM " --help|--version\n"); fprintf (stdout, "Extract bounding box from PDF, PNG, or JPEG file; default output below.\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, " -p page\tSpecify a PDF page to extract bounding box\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) { int 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) { uint32_t 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 = Include_Page; 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 'q': verbose = 0; break; case 'v': verbose = 1; break; case 'h': show_usage(); exit (0); case 'p': argc--; argv++; Include_Page = atol (argv[0]); if (Include_Page == 0) Include_Page = 1; break; 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; }