gvsig-raster / libjni-potrace / trunk / libjni-potrace / resources / potrace-1.8 / src / main.c @ 1780
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/* Copyright (C) 2001-2007 Peter Selinger.
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This file is part of Potrace. It is free software and it is covered
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by the GNU General Public License. See the file COPYING for details. */
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/* $Id: main.c 147 2007-04-09 00:44:09Z selinger $ */
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <getopt.h> |
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#include <math.h> |
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#include "main.h" |
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#include "potracelib.h" |
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#include "backend_pdf.h" |
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#include "backend_eps.h" |
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#include "backend_pgm.h" |
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#include "backend_svg.h" |
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#include "backend_gimp.h" |
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#include "backend_xfig.h" |
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#include "potracelib.h" |
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#include "bitmap_io.h" |
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#include "bitmap.h" |
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#include "platform.h" |
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#include "auxiliary.h" |
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#ifdef HAVE_CONFIG_H
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#include "config.h" |
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846 |
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#endif
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#define UNDEF ((double)(1e30)) /* a value to represent "undefined" */ |
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#define INFTY ((double)(1e30)) /* a value to represent +infinity */ |
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struct info_s info;
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#define COL0 "\033[G" /* reset cursor to column 0 */ |
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/* ---------------------------------------------------------------------- */
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/* callback function for progress bar */
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struct simple_progress_s {
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char name[22]; /* filename for status bar */ |
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double dnext; /* threshold value for next tick */ |
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}; |
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typedef struct simple_progress_s simple_progress_t; |
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/* print a simple progress bar. This is a callback function that is
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potentially called often; thus, it has been optimized for the
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typical case, which is when the progress bar does not need updating. */
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static void simple_progress(double d, void *data) { |
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simple_progress_t *p = (simple_progress_t *)data; |
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static char b[] = "========================================"; |
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int tick; /* number of visible tickmarks, 0..40 */ |
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int perc; /* visible percentage, 0..100 */ |
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/* note: the 0.01 and 0.025 ensure that we always end on 40
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tickmarks and 100%, despite any rounding errors. The 0.995
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ensures that tick always increases when d >= p->dnext. */
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if (d >= p->dnext) {
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tick = (int) floor(d*40+0.01); |
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perc = (int) floor(d*100+0.025); |
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fprintf(stderr, "%-21s |%-40s| %d%% "COL0"", p->name, b+40-tick, perc); |
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p->dnext = (tick+0.995) / 40.0; |
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} |
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} |
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/* Initialize parameters for simple progress bar. The caller passes an
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allocated simple_progress_t structure to avoid having to malloc it
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here and free it later. */
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static inline void init_progress(potrace_progress_t *prog, simple_progress_t *p, const char *filename, int count) { |
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const char *q, *s; |
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int len;
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/* initialize callback function's data */
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p->dnext = 0;
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if (count != 0) { |
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sprintf(p->name, " (p.%d):", count+1); |
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} else {
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s = filename; |
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if ((q = strrchr(s, '/')) != NULL) { |
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s = q+1;
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} |
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len = strlen(s); |
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strncpy(p->name, s, 21);
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p->name[20] = 0; |
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if (len > 20) { |
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p->name[17] = '.'; |
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p->name[18] = '.'; |
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p->name[19] = '.'; |
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} |
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strcat(p->name, ":");
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} |
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/* initialize progress parameters */
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prog->callback = &simple_progress; |
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prog->data = (void *)p;
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prog->min = 0.0; |
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prog->max = 1.0; |
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prog->epsilon = 0.0; |
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/* draw first progress bar */
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simple_progress(0.0, prog->data); |
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return;
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} |
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/* ---------------------------------------------------------------------- */
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/* some data structures for option processing */
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struct pageformat_s {
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char *name;
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int w, h;
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}; |
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typedef struct pageformat_s pageformat_t; |
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/* dimensions of the various page formats, in postscript points */
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static pageformat_t pageformat[] = {
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{ "a4", 595, 842 }, |
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{ "a3", 842, 1191 }, |
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{ "a5", 421, 595 }, |
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{ "b5", 516, 729 }, |
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{ "letter", 612, 792 }, |
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{ "legal", 612, 1008 }, |
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{ "tabloid", 792, 1224 }, |
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{ "statement", 396, 612 }, |
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{ "executive", 540, 720 }, |
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{ "folio", 612, 936 }, |
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{ "quarto", 610, 780 }, |
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{ "10x14", 720, 1008 }, |
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{ NULL, 0, 0 }, |
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}; |
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struct turnpolicy_s {
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char *name;
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int n;
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}; |
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typedef struct turnpolicy_s turnpolicy_t; |
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/* names of turn policies */
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static turnpolicy_t turnpolicy[] = {
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{"black", POTRACE_TURNPOLICY_BLACK},
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{"white", POTRACE_TURNPOLICY_WHITE},
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{"left", POTRACE_TURNPOLICY_LEFT},
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{"right", POTRACE_TURNPOLICY_RIGHT},
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{"minority", POTRACE_TURNPOLICY_MINORITY},
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{"majority", POTRACE_TURNPOLICY_MAJORITY},
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{"random", POTRACE_TURNPOLICY_RANDOM},
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{NULL, 0}, |
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}; |
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/* backends and their characteristics */
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struct backend_s {
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char *name; /* name of this backend */ |
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char *ext; /* file extension */ |
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int fixed; /* fixed page size backend? */ |
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int pixel; /* pixel-based backend? */ |
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int multi; /* multi-page backend? */ |
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int (*init_f)(FILE *fout); /* initialization function */ |
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int (*page_f)(FILE *fout, potrace_path_t *plist, imginfo_t *imginfo);
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/* per-bitmap function */
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int (*term_f)(FILE *fout); /* finalization function */ |
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int opticurve; /* opticurve capable (true Bezier curves?) */ |
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}; |
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typedef struct backend_s backend_t; |
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static backend_t backend[] = {
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{"eps", ".eps", 0, 0, 0, NULL, page_eps, NULL, 1}, |
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{"postscript", ".ps", 1, 0, 1, init_ps, page_ps, term_ps, 1}, |
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{"ps", ".ps", 1, 0, 1, init_ps, page_ps, term_ps, 1}, |
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{"pdf", ".pdf", 0, 0, 1, init_pdf,page_pdf, term_pdf, 1}, |
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{"svg", ".svg", 0, 0, 0, NULL, page_svg, NULL, 1}, |
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{"pgm", ".pgm", 0, 1, 1, NULL, page_pgm, NULL, 1}, |
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{"gimppath", ".gimppath", 0, 1, 0, NULL, page_gimp, NULL, 1}, |
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{"xfig", ".fig", 1, 0, 0, NULL, page_xfig, NULL, 0}, |
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{NULL, NULL, 0, 0, 0, NULL, NULL, NULL}, |
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}; |
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/* look up a backend by name. If found, return 0 and set *bp. If not
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found leave *bp unchanged and return 1, or 2 on ambiguous
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prefix. */
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static int backend_lookup(char *name, backend_t **bp) { |
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int i;
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int m=0; /* prefix matches */ |
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backend_t *b = NULL;
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for (i=0; backend[i].name; i++) { |
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if (strcasecmp(backend[i].name, name)==0) { |
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*bp = &backend[i]; |
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return 0; |
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} else if (strncasecmp(backend[i].name, name, strlen(name))==0) { |
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m++; |
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b = &backend[i]; |
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} |
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} |
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/* if there was no exact match, and exactly one prefix match, use that */
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if (m==1) { |
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*bp = b; |
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return 0; |
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} else if (m) { |
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return 2; |
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} else {
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return 1; |
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} |
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} |
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/* list all available backends by name, in a comma separated list.
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Assume the cursor starts in column j, and break lines at length
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linelen. Do not output any trailing punctuation. Return the column
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the cursor is in. */
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static int backend_list(FILE *fout, int j, int linelen) { |
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int i;
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for (i=0; backend[i].name; i++) { |
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if (j + (int)strlen(backend[i].name) > linelen) { |
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fprintf(fout, "\n");
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j = 0;
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} |
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j += fprintf(fout, "%s", backend[i].name);
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if (backend[i+1].name) { |
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j += fprintf(fout, ", ");
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} |
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} |
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return j;
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} |
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/* ---------------------------------------------------------------------- */
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/* some info functions */
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static void license(FILE *f) { |
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fprintf(f, |
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"This program is free software; you can redistribute it and/or modify\n"
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"it under the terms of the GNU General Public License as published by\n"
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"the Free Software Foundation; either version 2 of the License, or\n"
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"(at your option) any later version.\n"
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"\n"
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"This program is distributed in the hope that it will be useful,\n"
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"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
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"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
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"GNU General Public License for more details.\n"
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"\n"
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"You should have received a copy of the GNU General Public License\n"
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"along with this program; if not, write to the Free Software\n"
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"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.\n"
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); |
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} |
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static void show_defaults(FILE *f) { |
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fprintf(f, "This version of Potrace was compiled with the following defaults:\n");
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fprintf(f, "Default unit: "DEFAULT_DIM_NAME"\n"); |
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fprintf(f, "Default page size: "DEFAULT_PAPERFORMAT"\n"); |
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} |
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static void usage(FILE *f) { |
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int j;
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fprintf(f, "Usage: "POTRACE" [options] [file...]\n"); |
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fprintf(f, "General options:\n");
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fprintf(f, " -h, --help - print this help message and exit\n");
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fprintf(f, " -v, --version - print version info and exit\n");
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fprintf(f, " -l, --license - print license info and exit\n");
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fprintf(f, " -V, --show-defaults - print compiled-in defaults and exit\n");
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fprintf(f, " --progress - show progress bar\n");
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fprintf(f, "Input/output options:\n");
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fprintf(f, " -o, --output <file> - output to file\n");
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fprintf(f, "Backend selection:\n");
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fprintf(f, " -e, --eps - EPS backend (encapsulated postscript) (default)\n");
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fprintf(f, " -p, --postscript - Postscript backend\n");
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fprintf(f, " -s, --svg - SVG backend (scalable vector graphics)\n");
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fprintf(f, " -g, --pgm - PGM backend (portable greymap)\n");
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fprintf(f, " -b, --backend <name> - select backend by name\n");
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fprintf(f, "Algorithm options:\n");
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fprintf(f, " -z, --turnpolicy <policy> - how to resolve ambiguities in path decomposition\n");
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fprintf(f, " -t, --turdsize <n> - suppress speckles of up to this size (default 2)\n");
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fprintf(f, " -a, --alphamax <n> - corner threshold parameter (default 1)\n");
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fprintf(f, " -n, --longcurve - turn off curve optimization\n");
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fprintf(f, " -O, --opttolerance <n> - curve optimization tolerance (default 0.2)\n");
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fprintf(f, " -u, --unit <n> - quantize output to 1/unit pixels (default 10)\n");
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fprintf(f, " -d, --debug <n> - produce debugging output of type n (n=1,2,3)\n");
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fprintf(f, "Scaling and placement options:\n");
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fprintf(f, " -W, --width <dim> - width of output image\n");
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fprintf(f, " -H, --height <dim> - height of output image\n");
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fprintf(f, " -r, --resolution <n>[x<n>] - resolution (in dpi)\n");
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fprintf(f, " -x, --scale <n>[x<n>] - scaling factor (pgm backend)\n");
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fprintf(f, " -S, --stretch <n> - yresolution/xresolution\n");
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fprintf(f, " -A, --rotate <angle> - rotate counterclockwise by angle\n");
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fprintf(f, " -M, --margin <dim> - margin\n");
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fprintf(f, " -L, --leftmargin <dim> - left margin\n");
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fprintf(f, " -R, --rightmargin <dim> - right margin\n");
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fprintf(f, " -T, --topmargin <dim> - top margin\n");
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fprintf(f, " -B, --bottommargin <dim> - bottom margin\n");
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fprintf(f, "Output options, supported by some backends:\n");
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fprintf(f, " -C, --color #rrggbb - set line color (default black)\n");
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fprintf(f, " --fillcolor #rrggbb - set fill color (default transparent)\n");
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fprintf(f, " --opaque - make white shapes opaque\n");
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fprintf(f, " --group - group related paths together\n");
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fprintf(f, "Postscript/EPS options:\n");
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fprintf(f, " -P, --pagesize <format> - page size (default is "DEFAULT_PAPERFORMAT")\n"); |
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fprintf(f, " -c, --cleartext - do not compress the output\n");
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fprintf(f, " -2, --level2 - use postscript level 2 compression (default)\n");
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#ifdef HAVE_ZLIB
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fprintf(f, " -3, --level3 - use postscript level 3 compression\n");
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#endif
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fprintf(f, " -q, --longcoding - do not optimize for file size\n");
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fprintf(f, "PGM options:\n");
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fprintf(f, " -G, --gamma <n> - gamma value for anti-aliasing (default 2.2)\n");
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fprintf(f, "Frontend options:\n");
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fprintf(f, " -k, --blacklevel <n> - black/white cutoff in input file (default 0.5)\n");
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fprintf(f, " -i, --invert - invert bitmap\n");
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fprintf(f, "\n");
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fprintf(f, "Dimensions can have optional units, e.g. 6.5in, 15cm, 100pt.\n");
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fprintf(f, "Default is "DEFAULT_DIM_NAME" (or pixels for pgm and gimppath backends).\n"); |
317 |
fprintf(f, "Possible input file formats are: pnm (pbm, pgm, ppm), bmp.\n");
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j = fprintf(f, "Backends are: ");
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backend_list(f, j, 70);
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fprintf(f, ".\n");
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} |
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/* ---------------------------------------------------------------------- */
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/* auxiliary functions for parameter parsing */
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/* parse a dimension of the kind "1.5in", "7cm", etc. Return result in
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postscript points (=1/72 in). If endptr!=NULL, store pointer to
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next character in *endptr in the manner of strtod(3). */
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static dim_t parse_dimension(char *s, char **endptr) { |
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char *p;
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dim_t res; |
332 |
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res.x = strtod(s, &p); |
334 |
res.d = 0;
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if (p!=s) {
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if (!strncasecmp(p, "in", 2)) { |
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res.d = DIM_IN; |
338 |
p += 2;
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} else if (!strncasecmp(p, "cm", 2)) { |
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res.d = DIM_CM; |
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p += 2;
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} else if (!strncasecmp(p, "mm", 2)) { |
343 |
res.d = DIM_MM; |
344 |
p += 2;
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} else if (!strncasecmp(p, "pt", 2)) { |
346 |
res.d = DIM_PT; |
347 |
p += 2;
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} |
349 |
} |
350 |
if (endptr!=NULL) { |
351 |
*endptr = p; |
352 |
} |
353 |
return res;
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} |
355 |
|
356 |
/* parse a pair of dimensions, such as "8.5x11in", "30mmx4cm" */
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357 |
static void parse_dimensions(char *s, char **endptr, dim_t *dxp, dim_t *dyp) { |
358 |
char *p, *q;
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359 |
dim_t dx, dy; |
360 |
|
361 |
dx = parse_dimension(s, &p); |
362 |
if (p==s) {
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goto fail;
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} |
365 |
if (*p != 'x') { |
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goto fail;
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367 |
} |
368 |
p++; |
369 |
dy = parse_dimension(p, &q); |
370 |
if (q==p) {
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goto fail;
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372 |
} |
373 |
if (dx.d && !dy.d) {
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374 |
dy.d = dx.d; |
375 |
} else if (!dx.d && dy.d) { |
376 |
dx.d = dy.d; |
377 |
} |
378 |
*dxp = dx; |
379 |
*dyp = dy; |
380 |
if (endptr != NULL) { |
381 |
*endptr = q; |
382 |
} |
383 |
return;
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384 |
|
385 |
fail:
|
386 |
dx.x = dx.d = dy.x = dy.d = 0;
|
387 |
*dxp = dx; |
388 |
*dyp = dy; |
389 |
if (endptr != NULL) { |
390 |
*endptr = s; |
391 |
} |
392 |
return;
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393 |
} |
394 |
|
395 |
static inline double double_of_dim(dim_t d, double def) { |
396 |
if (d.d) {
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397 |
return d.x * d.d;
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398 |
} else {
|
399 |
return d.x * def;
|
400 |
} |
401 |
} |
402 |
|
403 |
static int parse_color(char *s) { |
404 |
int i, d;
|
405 |
int col = 0; |
406 |
|
407 |
if (s[0] != '#' || strlen(s) != 7) { |
408 |
return -1; |
409 |
} |
410 |
for (i=0; i<6; i++) { |
411 |
d = s[6-i];
|
412 |
if (d >= '0' && d <= '9') { |
413 |
col |= (d-'0') << (4*i); |
414 |
} else if (d >= 'a' && d <= 'f') { |
415 |
col |= (d-'a'+10) << (4*i); |
416 |
} else if (d >= 'A' && d <= 'F') { |
417 |
col |= (d-'A'+10) << (4*i); |
418 |
} else {
|
419 |
return -1; |
420 |
} |
421 |
} |
422 |
return col;
|
423 |
} |
424 |
|
425 |
/* ---------------------------------------------------------------------- */
|
426 |
/* option processing */
|
427 |
|
428 |
/* codes for options that don't have short form */
|
429 |
#define OPT_GROUP 300 |
430 |
#define OPT_OPAQUE 301 |
431 |
#define OPT_FILLCOLOR 302 |
432 |
#define OPT_PROGRESS 303 |
433 |
|
434 |
static struct option longopts[] = { |
435 |
{"help", 0, 0, 'h'}, |
436 |
{"version", 0, 0, 'v'}, |
437 |
{"license", 0, 0, 'l'}, |
438 |
{"show-defaults", 0, 0, 'V'}, |
439 |
{"progress", 0, 0, OPT_PROGRESS}, |
440 |
{"width", 1, 0, 'W'}, |
441 |
{"height", 1, 0, 'H'}, |
442 |
{"resolution", 1, 0, 'r'}, |
443 |
{"scale", 1, 0, 'x'}, |
444 |
{"stretch", 1, 0, 'S'}, |
445 |
{"margin", 1, 0, 'M'}, |
446 |
{"leftmargin", 1, 0, 'L'}, |
447 |
{"rightmargin", 1, 0, 'R'}, |
448 |
{"topmargin", 1, 0, 'T'}, |
449 |
{"bottommargin", 1, 0, 'B'}, |
450 |
{"rotate", 1, 0, 'A'}, |
451 |
{"pagesize", 1, 0, 'P'}, |
452 |
{"turdsize", 1, 0, 't'}, |
453 |
{"unit", 1, 0, 'u'}, |
454 |
{"cleartext", 0, 0, 'c'}, |
455 |
{"level2", 0, 0, '2'}, |
456 |
{"level3", 0, 0, '3'}, |
457 |
{"eps", 0, 0, 'e'}, |
458 |
{"postscript", 0, 0, 'p'}, |
459 |
{"svg", 0, 0, 's'}, |
460 |
{"pgm", 0, 0, 'g'}, |
461 |
{"backend", 1, 0, 'b'}, |
462 |
{"debug", 1, 0, 'd'}, |
463 |
{"color", 1, 0, 'C'}, |
464 |
{"fillcolor", 1, 0, OPT_FILLCOLOR}, |
465 |
{"turnpolicy", 1, 0, 'z'}, |
466 |
{"gamma", 1, 0, 'G'}, |
467 |
{"longcurve", 0, 0, 'n'}, |
468 |
{"longcoding", 0, 0, 'q'}, |
469 |
{"alphamax", 1, 0, 'a'}, |
470 |
{"opttolerance", 1, 0, 'O'}, |
471 |
{"output", 1, 0, 'o'}, |
472 |
{"blacklevel", 1, 0, 'k'}, |
473 |
{"invert", 0, 0, 'i'}, |
474 |
{"opaque", 0, 0, OPT_OPAQUE}, |
475 |
{"group", 0, 0, OPT_GROUP}, |
476 |
|
477 |
{0, 0, 0, 0} |
478 |
}; |
479 |
|
480 |
static char *shortopts = "hvlVW:H:r:x:S:M:L:R:T:B:A:P:t:u:c23epsgb:d:C:z:G:nqa:O:o:k:i"; |
481 |
|
482 |
static void dopts(int ac, char *av[]) { |
483 |
int c;
|
484 |
char *p;
|
485 |
int i, j, r;
|
486 |
dim_t dim, dimx, dimy; |
487 |
int matches, bestmatch;
|
488 |
|
489 |
/* defaults */
|
490 |
backend_lookup("eps", &info.backend);
|
491 |
info.debug = 0;
|
492 |
info.width_d.x = UNDEF; |
493 |
info.height_d.x = UNDEF; |
494 |
info.rx = UNDEF; |
495 |
info.ry = UNDEF; |
496 |
info.sx = UNDEF; |
497 |
info.sy = UNDEF; |
498 |
info.stretch = 1;
|
499 |
info.lmar_d.x = UNDEF; |
500 |
info.rmar_d.x = UNDEF; |
501 |
info.tmar_d.x = UNDEF; |
502 |
info.bmar_d.x = UNDEF; |
503 |
info.angle = 0;
|
504 |
info.paperwidth = DEFAULT_PAPERWIDTH; |
505 |
info.paperheight = DEFAULT_PAPERHEIGHT; |
506 |
info.unit = 10;
|
507 |
info.compress = 1;
|
508 |
info.pslevel = 2;
|
509 |
info.color = 0x000000;
|
510 |
info.gamma = 2.2; |
511 |
info.param = potrace_param_default(); |
512 |
if (!info.param) {
|
513 |
fprintf(stderr, ""POTRACE": %s\n", strerror(errno)); |
514 |
exit(1);
|
515 |
} |
516 |
info.longcoding = 0;
|
517 |
info.outfile = NULL;
|
518 |
info.blacklevel = 0.5; |
519 |
info.invert = 0;
|
520 |
info.opaque = 0;
|
521 |
info.group = 0;
|
522 |
info.fillcolor = 0xffffff;
|
523 |
info.progress = 0;
|
524 |
|
525 |
while ((c = getopt_long(ac, av, shortopts, longopts, NULL)) != -1) { |
526 |
switch (c) {
|
527 |
case 'h': |
528 |
fprintf(stdout, ""POTRACE" "VERSION". Transforms bitmaps into vector graphics.\n\n"); |
529 |
usage(stdout); |
530 |
exit(0);
|
531 |
break;
|
532 |
case 'v': |
533 |
fprintf(stdout, ""POTRACE" "VERSION". Copyright (C) 2001-2007 Peter Selinger.\n"); |
534 |
fprintf(stdout, "Library version: %s\n", potrace_version());
|
535 |
exit(0);
|
536 |
break;
|
537 |
case 'l': |
538 |
fprintf(stdout, ""POTRACE" "VERSION". Copyright (C) 2001-2007 Peter Selinger.\n\n"); |
539 |
license(stdout); |
540 |
exit(0);
|
541 |
break;
|
542 |
case 'V': |
543 |
fprintf(stdout, ""POTRACE" "VERSION". Copyright (C) 2001-2007 Peter Selinger.\n"); |
544 |
show_defaults(stdout); |
545 |
exit(0);
|
546 |
break;
|
547 |
case OPT_PROGRESS:
|
548 |
info.progress = 1;
|
549 |
break;
|
550 |
case 'W': |
551 |
info.width_d = parse_dimension(optarg, &p); |
552 |
if (*p) {
|
553 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
554 |
exit(1);
|
555 |
} |
556 |
break;
|
557 |
case 'H': |
558 |
info.height_d = parse_dimension(optarg, &p); |
559 |
if (*p) {
|
560 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
561 |
exit(1);
|
562 |
} |
563 |
break;
|
564 |
case 'r': |
565 |
parse_dimensions(optarg, &p, &dimx, &dimy); |
566 |
if (*p == 0 && dimx.d == 0 && dimy.d == 0) { |
567 |
info.rx = dimx.x; |
568 |
info.ry = dimy.x; |
569 |
break;
|
570 |
} |
571 |
dim = parse_dimension(optarg, &p); |
572 |
if (*p == 0 && dim.d == 0) { |
573 |
info.rx = info.ry = dim.x; |
574 |
break;
|
575 |
} |
576 |
fprintf(stderr, ""POTRACE": invalid resolution -- %s\n", optarg); |
577 |
exit(1);
|
578 |
break;
|
579 |
case 'x': |
580 |
parse_dimensions(optarg, &p, &dimx, &dimy); |
581 |
if (*p == 0 && dimx.d == 0 && dimy.d == 0) { |
582 |
info.sx = dimx.x; |
583 |
info.sy = dimy.x; |
584 |
break;
|
585 |
} |
586 |
dim = parse_dimension(optarg, &p); |
587 |
if (*p == 0 && dim.d == 0) { |
588 |
info.sx = info.sy = dim.x; |
589 |
break;
|
590 |
} |
591 |
fprintf(stderr, ""POTRACE": invalid scaling factor -- %s\n", optarg); |
592 |
exit(1);
|
593 |
break;
|
594 |
case 'S': |
595 |
info.stretch = atof(optarg); |
596 |
break;
|
597 |
case 'M': |
598 |
info.lmar_d = parse_dimension(optarg, &p); |
599 |
if (*p) {
|
600 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
601 |
exit(1);
|
602 |
} |
603 |
info.rmar_d = info.tmar_d = info.bmar_d = info.lmar_d; |
604 |
break;
|
605 |
case 'L': |
606 |
info.lmar_d = parse_dimension(optarg, &p); |
607 |
if (*p) {
|
608 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
609 |
exit(1);
|
610 |
} |
611 |
break;
|
612 |
case 'R': |
613 |
info.rmar_d = parse_dimension(optarg, &p); |
614 |
if (*p) {
|
615 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
616 |
exit(1);
|
617 |
} |
618 |
break;
|
619 |
case 'T': |
620 |
info.tmar_d = parse_dimension(optarg, &p); |
621 |
if (*p) {
|
622 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
623 |
exit(1);
|
624 |
} |
625 |
break;
|
626 |
case 'B': |
627 |
info.bmar_d = parse_dimension(optarg, &p); |
628 |
if (*p) {
|
629 |
fprintf(stderr, ""POTRACE": invalid dimension -- %s\n", optarg); |
630 |
exit(1);
|
631 |
} |
632 |
break;
|
633 |
case 'A': |
634 |
info.angle = strtod(optarg, &p); |
635 |
if (*p) {
|
636 |
fprintf(stderr, ""POTRACE": invalid angle -- %s\n", optarg); |
637 |
exit(1);
|
638 |
} |
639 |
break;
|
640 |
case 'P': |
641 |
matches = 0;
|
642 |
bestmatch = 0;
|
643 |
for (i=0; pageformat[i].name!=NULL; i++) { |
644 |
if (strcasecmp(pageformat[i].name, optarg)==0) { |
645 |
matches = 1;
|
646 |
bestmatch = i; |
647 |
break;
|
648 |
} else if (strncasecmp(pageformat[i].name, optarg, strlen(optarg))==0) { |
649 |
/* don't allow partial match on "10x14" */
|
650 |
if (optarg[0] != '1') { |
651 |
matches++; |
652 |
bestmatch = i; |
653 |
} |
654 |
} |
655 |
} |
656 |
if (matches == 1) { |
657 |
info.paperwidth = pageformat[bestmatch].w; |
658 |
info.paperheight = pageformat[bestmatch].h; |
659 |
break;
|
660 |
} |
661 |
parse_dimensions(optarg, &p, &dimx, &dimy); |
662 |
if (*p == 0) { |
663 |
info.paperwidth = (int)rint(double_of_dim(dimx, DEFAULT_DIM));
|
664 |
info.paperheight = (int)rint(double_of_dim(dimy, DEFAULT_DIM));
|
665 |
break;
|
666 |
} |
667 |
if (matches == 0) { |
668 |
fprintf(stderr, ""POTRACE": unrecognized page format -- %s\n", optarg); |
669 |
} else {
|
670 |
fprintf(stderr, ""POTRACE": ambiguous page format -- %s\n", optarg); |
671 |
} |
672 |
j = fprintf(stderr, "Use one of: ");
|
673 |
for (i=0; pageformat[i].name!=NULL; i++) { |
674 |
if (j + strlen(pageformat[i].name) > 75) { |
675 |
fprintf(stderr, "\n");
|
676 |
j = 0;
|
677 |
} |
678 |
j += fprintf(stderr, "%s, ", pageformat[i].name);
|
679 |
} |
680 |
fprintf(stderr, "or specify <dim>x<dim>.\n");
|
681 |
exit(1);
|
682 |
break;
|
683 |
case 't': |
684 |
info.param->turdsize = atoi(optarg); |
685 |
break;
|
686 |
case 'u': |
687 |
info.unit = strtod(optarg, &p); |
688 |
if (*p) {
|
689 |
fprintf(stderr, ""POTRACE": invalid unit -- %s\n", optarg); |
690 |
exit(1);
|
691 |
} |
692 |
break;
|
693 |
case 'c': |
694 |
info.pslevel = 2;
|
695 |
info.compress = 0;
|
696 |
break;
|
697 |
case '2': |
698 |
info.pslevel = 2;
|
699 |
info.compress = 1;
|
700 |
break;
|
701 |
case '3': |
702 |
#ifdef HAVE_ZLIB
|
703 |
info.pslevel = 3;
|
704 |
info.compress = 1;
|
705 |
#else
|
706 |
fprintf(stderr, ""POTRACE": option -3 not supported, using -2 instead.\n"); |
707 |
info.pslevel = 2;
|
708 |
info.compress = 1;
|
709 |
#endif
|
710 |
break;
|
711 |
case 'e': |
712 |
backend_lookup("eps", &info.backend);
|
713 |
break;
|
714 |
case 'p': |
715 |
backend_lookup("postscript", &info.backend);
|
716 |
break;
|
717 |
case 's': |
718 |
backend_lookup("svg", &info.backend);
|
719 |
break;
|
720 |
case 'g': |
721 |
backend_lookup("pgm", &info.backend);
|
722 |
break;
|
723 |
case 'b': |
724 |
r = backend_lookup(optarg, &info.backend); |
725 |
if (r==1 || r==2) { |
726 |
if (r==1) { |
727 |
fprintf(stderr, ""POTRACE": unrecognized backend -- %s\n", optarg); |
728 |
} else {
|
729 |
fprintf(stderr, ""POTRACE": ambiguous backend -- %s\n", optarg); |
730 |
} |
731 |
j = fprintf(stderr, "Use one of: ");
|
732 |
backend_list(stderr, j, 70);
|
733 |
fprintf(stderr, ".\n");
|
734 |
exit(1);
|
735 |
} |
736 |
break;
|
737 |
case 'd': |
738 |
info.debug = atoi(optarg); |
739 |
break;
|
740 |
case 'C': |
741 |
info.color = parse_color(optarg); |
742 |
if (info.color == -1) { |
743 |
fprintf(stderr, ""POTRACE": invalid color -- %s\n", optarg); |
744 |
exit(1);
|
745 |
} |
746 |
break;
|
747 |
case OPT_FILLCOLOR:
|
748 |
info.fillcolor = parse_color(optarg); |
749 |
if (info.fillcolor == -1) { |
750 |
fprintf(stderr, ""POTRACE": invalid color -- %s\n", optarg); |
751 |
exit(1);
|
752 |
} |
753 |
info.opaque = 1;
|
754 |
break;
|
755 |
case 'z': |
756 |
matches = 0;
|
757 |
bestmatch = 0;
|
758 |
for (i=0; turnpolicy[i].name!=NULL; i++) { |
759 |
if (strcasecmp(turnpolicy[i].name, optarg)==0) { |
760 |
matches = 1;
|
761 |
bestmatch = i; |
762 |
break;
|
763 |
} else if (strncasecmp(turnpolicy[i].name, optarg, strlen(optarg))==0) { |
764 |
matches++; |
765 |
bestmatch = i; |
766 |
} |
767 |
} |
768 |
if (matches == 1) { |
769 |
info.param->turnpolicy = turnpolicy[bestmatch].n; |
770 |
break;
|
771 |
} |
772 |
if (matches == 0) { |
773 |
fprintf(stderr, ""POTRACE": unrecognized turnpolicy -- %s\n", optarg); |
774 |
} else {
|
775 |
fprintf(stderr, ""POTRACE": ambiguous turnpolicy -- %s\n", optarg); |
776 |
} |
777 |
j = fprintf(stderr, "Use one of: ");
|
778 |
for (i=0; turnpolicy[i].name!=NULL; i++) { |
779 |
if (j + strlen(turnpolicy[i].name) > 75) { |
780 |
fprintf(stderr, "\n");
|
781 |
j = 0;
|
782 |
} |
783 |
j += fprintf(stderr, "%s%s", turnpolicy[i].name, turnpolicy[i+1].name ? ", " : ""); |
784 |
} |
785 |
fprintf(stderr, ".\n");
|
786 |
exit(1);
|
787 |
break;
|
788 |
case 'G': |
789 |
info.gamma = atof(optarg); |
790 |
break;
|
791 |
case 'n': |
792 |
info.param->opticurve = 0;
|
793 |
break;
|
794 |
case 'q': |
795 |
info.longcoding = 1;
|
796 |
break;
|
797 |
case 'a': |
798 |
info.param->alphamax = strtod(optarg, &p); |
799 |
if (*p) {
|
800 |
fprintf(stderr, ""POTRACE": invalid alphamax -- %s\n", optarg); |
801 |
exit(1);
|
802 |
} |
803 |
break;
|
804 |
case 'O': |
805 |
info.param->opttolerance = strtod(optarg, &p); |
806 |
if (*p) {
|
807 |
fprintf(stderr, ""POTRACE": invalid opttolerance -- %s\n", optarg); |
808 |
exit(1);
|
809 |
} |
810 |
break;
|
811 |
case 'o': |
812 |
free(info.outfile); |
813 |
info.outfile = strdup(optarg); |
814 |
break;
|
815 |
case 'k': |
816 |
info.blacklevel = strtod(optarg, &p); |
817 |
if (*p) {
|
818 |
fprintf(stderr, ""POTRACE": invalid blacklevel -- %s\n", optarg); |
819 |
exit(1);
|
820 |
} |
821 |
break;
|
822 |
case 'i': |
823 |
info.invert = 1;
|
824 |
break;
|
825 |
case OPT_OPAQUE:
|
826 |
info.opaque = 1;
|
827 |
break;
|
828 |
case OPT_GROUP:
|
829 |
info.group = 1;
|
830 |
break;
|
831 |
case '?': |
832 |
fprintf(stderr, "Try --help for more info\n");
|
833 |
exit(1);
|
834 |
break;
|
835 |
default:
|
836 |
fprintf(stderr, ""POTRACE": Unimplemented option -- %c\n", c); |
837 |
exit(1);
|
838 |
} |
839 |
} |
840 |
info.infiles = &av[optind]; |
841 |
info.infilecount = ac-optind; |
842 |
} |
843 |
|
844 |
/* ---------------------------------------------------------------------- */
|
845 |
/* calculations with bitmap dimensions, positioning etc */
|
846 |
|
847 |
/* consider a rectangle spanned by the vectors (w,0) and (0,h). Rotate
|
848 |
it counterclockwise by angle alpha. Then set the rect_t structure
|
849 |
to the resulting rectangle, setting its bounding box, origin,
|
850 |
x-basis and y-basis. */
|
851 |
|
852 |
static void rotate_dim(double alpha, double w, double h, rect_t *r) { |
853 |
double s, c, x0, x1, y0, y1;
|
854 |
|
855 |
s = sin(alpha/180*M_PI);
|
856 |
c = cos(alpha/180*M_PI);
|
857 |
|
858 |
/* apply the transformation matrix to the basis vectors */
|
859 |
x0 = c*w; |
860 |
x1 = s*w; |
861 |
y0 = -s*h; |
862 |
y1 = c*h; |
863 |
|
864 |
/* determine bounding box and origin relative to bounding box */
|
865 |
r->bb[0] = fabs(x0) + fabs(y0);
|
866 |
r->bb[1] = fabs(x1) + fabs(y1);
|
867 |
r->orig[0] = - min(x0,0) - min(y0,0); |
868 |
r->orig[1] = - min(x1,0) - min(y1,0); |
869 |
} |
870 |
|
871 |
/* determine the dimensions of the output based on command line and
|
872 |
image dimensions */
|
873 |
static void calc_dimensions(imginfo_t *imginfo) { |
874 |
double dim_def;
|
875 |
double maxwidth, maxheight, sc;
|
876 |
rect_t r; |
877 |
|
878 |
/* we take care of a special case: if one of the image dimensions is
|
879 |
0, we change it to 1. Such an image is empty anyway, so there
|
880 |
will be 0 paths in it. Changing the dimensions avoids division by
|
881 |
0 error in calculating scaling factors, bounding boxes and
|
882 |
such. This doesn't quite do the right thing in all cases, but it
|
883 |
is better than causing overflow errors or "nan" output in
|
884 |
backends. Human users don't tend to process images of size 0
|
885 |
anyway; they might occur in some pipelines. */
|
886 |
if (imginfo->pixwidth == 0) { |
887 |
imginfo->pixwidth = 1;
|
888 |
} |
889 |
if (imginfo->pixheight == 0) { |
890 |
imginfo->pixheight = 1;
|
891 |
} |
892 |
|
893 |
/* set the default dimension for width, height, margins */
|
894 |
if (info.backend->pixel) {
|
895 |
dim_def = DIM_PT; |
896 |
} else {
|
897 |
dim_def = DEFAULT_DIM; |
898 |
} |
899 |
|
900 |
/* apply default dimension to width, height, margins */
|
901 |
imginfo->width = info.width_d.x == UNDEF ? UNDEF : double_of_dim(info.width_d, dim_def); |
902 |
imginfo->height = info.height_d.x == UNDEF ? UNDEF : double_of_dim(info.height_d, dim_def); |
903 |
imginfo->lmar = info.lmar_d.x == UNDEF ? UNDEF : double_of_dim(info.lmar_d, dim_def); |
904 |
imginfo->rmar = info.rmar_d.x == UNDEF ? UNDEF : double_of_dim(info.rmar_d, dim_def); |
905 |
imginfo->tmar = info.tmar_d.x == UNDEF ? UNDEF : double_of_dim(info.tmar_d, dim_def); |
906 |
imginfo->bmar = info.bmar_d.x == UNDEF ? UNDEF : double_of_dim(info.bmar_d, dim_def); |
907 |
|
908 |
/* determine width and height from desired resolution / scaling
|
909 |
factor, if given */
|
910 |
if (info.backend->pixel) {
|
911 |
if (imginfo->width == UNDEF && info.sx != UNDEF) {
|
912 |
imginfo->width = imginfo->pixwidth * info.sx; |
913 |
} |
914 |
if (imginfo->height == UNDEF && info.sy != UNDEF) {
|
915 |
imginfo->height = imginfo->pixheight * info.sy; |
916 |
} |
917 |
} else {
|
918 |
if (imginfo->width == UNDEF && info.rx != UNDEF) {
|
919 |
imginfo->width = imginfo->pixwidth / info.rx * 72;
|
920 |
} |
921 |
if (imginfo->height == UNDEF && info.ry != UNDEF) {
|
922 |
imginfo->height = imginfo->pixheight / info.ry * 72;
|
923 |
} |
924 |
} |
925 |
|
926 |
/* if one of width/height is specified, determine the other */
|
927 |
if (imginfo->width == UNDEF && imginfo->height != UNDEF) {
|
928 |
imginfo->width = imginfo->height / imginfo->pixheight * imginfo->pixwidth / info.stretch; |
929 |
} else if (imginfo->width != UNDEF && imginfo->height == UNDEF) { |
930 |
imginfo->height = imginfo->width / imginfo->pixwidth * imginfo->pixheight * info.stretch; |
931 |
} |
932 |
|
933 |
/* if width and height are still variable, figure them out */
|
934 |
if (imginfo->width == UNDEF && imginfo->height == UNDEF) {
|
935 |
|
936 |
if (info.backend->fixed) {
|
937 |
|
938 |
/* in fixed-size backends, try to squeeze it between margins */
|
939 |
maxwidth = UNDEF; |
940 |
maxheight = UNDEF; |
941 |
|
942 |
if (imginfo->lmar != UNDEF && imginfo->rmar != UNDEF) {
|
943 |
maxwidth = info.paperwidth - imginfo->lmar - imginfo->rmar; |
944 |
} |
945 |
if (imginfo->bmar != UNDEF && imginfo->tmar != UNDEF) {
|
946 |
maxheight = info.paperheight - imginfo->bmar - imginfo->tmar; |
947 |
} |
948 |
if (maxwidth == UNDEF && maxheight == UNDEF) {
|
949 |
maxwidth = max(info.paperwidth - 144, info.paperwidth * 0.75); |
950 |
maxheight = max(info.paperheight - 144, info.paperheight * 0.75); |
951 |
} |
952 |
|
953 |
rotate_dim(info.angle, imginfo->pixwidth, imginfo->pixheight * info.stretch, &r); |
954 |
|
955 |
sc = min(maxwidth == UNDEF ? INFTY : maxwidth / r.bb[0], maxheight == UNDEF ? INFTY : maxheight / r.bb[1]); |
956 |
imginfo->width = imginfo->pixwidth * sc; |
957 |
imginfo->height = imginfo->pixheight * info.stretch * sc; |
958 |
|
959 |
} else if (info.backend->pixel) { |
960 |
|
961 |
/* in pixel-based backends, assume default scaling factor of 1 */
|
962 |
|
963 |
imginfo->width = imginfo->pixwidth; |
964 |
imginfo->height = imginfo->pixheight * info.stretch; |
965 |
} else {
|
966 |
|
967 |
/* otherwise, choose a default size based on the default paper format */
|
968 |
|
969 |
maxwidth = max(info.paperwidth - 144, info.paperwidth * 0.75); |
970 |
maxheight = max(info.paperheight - 144, info.paperheight * 0.75); |
971 |
|
972 |
sc = min(maxwidth / imginfo->pixwidth, maxheight / imginfo->pixheight / info.stretch); |
973 |
imginfo->width = imginfo->pixwidth * sc; |
974 |
imginfo->height = imginfo->pixheight * info.stretch * sc; |
975 |
} |
976 |
} |
977 |
|
978 |
/* calculate coordinate system */
|
979 |
rotate_dim(info.angle, imginfo->width, imginfo->height, &imginfo->trans); |
980 |
|
981 |
/* adjust margins */
|
982 |
if (info.backend->fixed) {
|
983 |
if (imginfo->lmar == UNDEF && imginfo->rmar == UNDEF) {
|
984 |
imginfo->lmar = (info.paperwidth-imginfo->trans.bb[0])/2; |
985 |
} else if (imginfo->lmar == UNDEF) { |
986 |
imginfo->lmar = (info.paperwidth-imginfo->trans.bb[0]-imginfo->rmar);
|
987 |
} else if (imginfo->lmar != UNDEF && imginfo->rmar != UNDEF) { |
988 |
imginfo->lmar += (info.paperwidth-imginfo->trans.bb[0]-imginfo->lmar-imginfo->rmar)/2; |
989 |
} |
990 |
if (imginfo->bmar == UNDEF && imginfo->tmar == UNDEF) {
|
991 |
imginfo->bmar = (info.paperheight-imginfo->trans.bb[1])/2; |
992 |
} else if (imginfo->bmar == UNDEF) { |
993 |
imginfo->bmar = (info.paperheight-imginfo->trans.bb[1]-imginfo->tmar);
|
994 |
} else if (imginfo->bmar != UNDEF && imginfo->tmar != UNDEF) { |
995 |
imginfo->bmar += (info.paperheight-imginfo->trans.bb[1]-imginfo->bmar-imginfo->tmar)/2; |
996 |
} |
997 |
} else {
|
998 |
if (imginfo->lmar == UNDEF) {
|
999 |
imginfo->lmar = 0;
|
1000 |
} |
1001 |
if (imginfo->rmar == UNDEF) {
|
1002 |
imginfo->rmar = 0;
|
1003 |
} |
1004 |
if (imginfo->bmar == UNDEF) {
|
1005 |
imginfo->bmar = 0;
|
1006 |
} |
1007 |
if (imginfo->tmar == UNDEF) {
|
1008 |
imginfo->tmar = 0;
|
1009 |
} |
1010 |
} |
1011 |
} |
1012 |
|
1013 |
/* ---------------------------------------------------------------------- */
|
1014 |
/* auxiliary functions for file handling */
|
1015 |
|
1016 |
/* open a file for reading. Return stdin if filename is NULL or "-" */
|
1017 |
static FILE *my_fopen_read(char *filename) { |
1018 |
if (filename == NULL || strcmp(filename, "-") == 0) { |
1019 |
return stdin;
|
1020 |
} |
1021 |
return fopen(filename, "rb"); |
1022 |
} |
1023 |
|
1024 |
/* open a file for writing. Return stdout if filename is NULL or "-" */
|
1025 |
static FILE *my_fopen_write(char *filename) { |
1026 |
if (filename == NULL || strcmp(filename, "-") == 0) { |
1027 |
return stdout;
|
1028 |
} |
1029 |
return fopen(filename, "wb"); |
1030 |
} |
1031 |
|
1032 |
/* close a file, but do nothing is filename is NULL or "-" */
|
1033 |
static void my_fclose(FILE *f, char *filename) { |
1034 |
if (filename == NULL || strcmp(filename, "-") == 0) { |
1035 |
return;
|
1036 |
} |
1037 |
fclose(f); |
1038 |
} |
1039 |
|
1040 |
/* make output filename from input filename. Return an allocated value. */
|
1041 |
static char *make_outfilename(char *infile, char *ext) { |
1042 |
char *outfile;
|
1043 |
char *p;
|
1044 |
|
1045 |
if (strcmp(infile, "-") == 0) { |
1046 |
return strdup("-"); |
1047 |
} |
1048 |
|
1049 |
outfile = (char *) malloc(strlen(infile)+strlen(ext)+5); |
1050 |
if (!outfile) {
|
1051 |
return NULL; |
1052 |
} |
1053 |
strcpy(outfile, infile); |
1054 |
p = strrchr(outfile, '.');
|
1055 |
if (p) {
|
1056 |
*p = 0;
|
1057 |
} |
1058 |
strcat(outfile, ext); |
1059 |
|
1060 |
/* check that input and output filenames are different */
|
1061 |
if (strcmp(infile, outfile) == 0) { |
1062 |
strcpy(outfile, infile); |
1063 |
strcat(outfile, "-out");
|
1064 |
} |
1065 |
|
1066 |
return outfile;
|
1067 |
} |
1068 |
|
1069 |
/* ---------------------------------------------------------------------- */
|
1070 |
/* Process one infile */
|
1071 |
|
1072 |
/* Process one or more bitmaps from fin, and write the results to fout
|
1073 |
using the page_f function of the appropriate backend. */
|
1074 |
|
1075 |
static void process_file(backend_t *b, const char *infile, const char *outfile, FILE *fin, FILE *fout) { |
1076 |
int r;
|
1077 |
potrace_bitmap_t *bm = NULL;
|
1078 |
imginfo_t imginfo; |
1079 |
int eof_flag = 0; /* to indicate premature eof */ |
1080 |
int count; /* number of bitmaps successfully processed, this file */ |
1081 |
potrace_state_t *st; |
1082 |
simple_progress_t progress_data; |
1083 |
|
1084 |
for (count=0; ; count++) { |
1085 |
/* read a bitmap */
|
1086 |
r = bm_read(fin, info.blacklevel, &bm); |
1087 |
switch (r) {
|
1088 |
case -1: /* system error */ |
1089 |
fprintf(stderr, ""POTRACE": %s: %s\n", infile, strerror(errno)); |
1090 |
exit(2);
|
1091 |
case -2: /* corrupt file format */ |
1092 |
fprintf(stderr, ""POTRACE": %s: file format error: %s\n", infile, bm_read_error); |
1093 |
exit(2);
|
1094 |
case -3: /* empty file */ |
1095 |
if (count>0) { /* end of file */ |
1096 |
return;
|
1097 |
} |
1098 |
fprintf(stderr, ""POTRACE": %s: empty file\n", infile); |
1099 |
exit(2);
|
1100 |
case -4: /* wrong magic */ |
1101 |
if (count>0) { |
1102 |
fprintf(stderr, ""POTRACE": %s: warning: junk at end of file\n", infile); |
1103 |
return;
|
1104 |
} |
1105 |
fprintf(stderr, ""POTRACE": %s: file format not recognized\n", infile); |
1106 |
fprintf(stderr, "Possible input file formats are: pnm (pbm, pgm, ppm), bmp.\n");
|
1107 |
exit(2);
|
1108 |
case 1: /* unexpected end of file */ |
1109 |
fprintf(stderr, ""POTRACE": warning: %s: premature end of file\n", infile); |
1110 |
eof_flag = 1;
|
1111 |
break;
|
1112 |
} |
1113 |
|
1114 |
/* prepare progress bar, if requested */
|
1115 |
if (info.progress) {
|
1116 |
init_progress(&info.param->progress, &progress_data, infile, count); |
1117 |
} else {
|
1118 |
info.param->progress.callback = NULL;
|
1119 |
} |
1120 |
|
1121 |
if (info.invert) {
|
1122 |
bm_invert(bm); |
1123 |
} |
1124 |
|
1125 |
/* process the image */
|
1126 |
st = potrace_trace(info.param, bm); |
1127 |
if (!st || st->status != POTRACE_STATUS_OK) {
|
1128 |
fprintf(stderr, ""POTRACE": %s: %s\n", infile, strerror(errno)); |
1129 |
exit(2);
|
1130 |
} |
1131 |
|
1132 |
/* calculate image dimensions */
|
1133 |
imginfo.pixwidth = bm->w; |
1134 |
imginfo.pixheight = bm->h; |
1135 |
calc_dimensions(&imginfo); |
1136 |
|
1137 |
bm_free(bm); |
1138 |
|
1139 |
r = b->page_f(fout, st->plist, &imginfo); |
1140 |
if (r) {
|
1141 |
fprintf(stderr, ""POTRACE": %s: %s\n", outfile, strerror(errno)); |
1142 |
exit(2);
|
1143 |
} |
1144 |
|
1145 |
potrace_state_free(st); |
1146 |
|
1147 |
if (info.progress) {
|
1148 |
fprintf(stderr, "\n");
|
1149 |
} |
1150 |
|
1151 |
if (eof_flag || !b->multi) {
|
1152 |
return;
|
1153 |
} |
1154 |
} |
1155 |
/* not reached */
|
1156 |
} |
1157 |
|
1158 |
/* ---------------------------------------------------------------------- */
|
1159 |
/* main: handle file i/o */
|
1160 |
|
1161 |
#define TRY(x) if (x) goto try_error |
1162 |
|
1163 |
int main(int ac, char *av[]) { |
1164 |
backend_t *b; /* backend info */
|
1165 |
FILE *fin, *fout; |
1166 |
int i;
|
1167 |
char *outfile;
|
1168 |
|
1169 |
/* platform-specific initializations, e.g., set file i/o to binary */
|
1170 |
platform_init(); |
1171 |
|
1172 |
/* process options */
|
1173 |
dopts(ac, av); |
1174 |
|
1175 |
b = info.backend; |
1176 |
if (b==NULL) { |
1177 |
fprintf(stderr, ""POTRACE": internal error: selected backend not found\n"); |
1178 |
exit(1);
|
1179 |
} |
1180 |
|
1181 |
/* fix some parameters */
|
1182 |
/* if backend cannot handle opticurve, disable it */
|
1183 |
if (b->opticurve == 0) { |
1184 |
info.param->opticurve = 0;
|
1185 |
} |
1186 |
|
1187 |
/* there are several ways to call us:
|
1188 |
potrace -- stdin to stdout
|
1189 |
potrace -o outfile -- stdin to outfile
|
1190 |
potrace file... -- encode each file and generate outfile names
|
1191 |
potrace -o outfile file... -- concatenate files and write to outfile
|
1192 |
|
1193 |
The latter form is only allowed one file for single-page
|
1194 |
backends. For multi-page backends, each file must contain 0 or
|
1195 |
more complete bitmaps.
|
1196 |
*/
|
1197 |
|
1198 |
if (info.infilecount == 0) { /* read from stdin */ |
1199 |
|
1200 |
fout = my_fopen_write(info.outfile); |
1201 |
if (!fout) {
|
1202 |
fprintf(stderr, ""POTRACE": %s: %s\n", info.outfile ? info.outfile : "stdout", strerror(errno)); |
1203 |
exit(2);
|
1204 |
} |
1205 |
if (b->init_f) {
|
1206 |
TRY(b->init_f(fout)); |
1207 |
} |
1208 |
process_file(b, "stdin", info.outfile ? info.outfile : "stdout", stdin, fout); |
1209 |
if (b->term_f) {
|
1210 |
TRY(b->term_f(fout)); |
1211 |
} |
1212 |
my_fclose(fout, info.outfile); |
1213 |
return 0; |
1214 |
|
1215 |
} else if (!info.outfile) { /* infiles -> multiple outfiles */ |
1216 |
|
1217 |
for (i=0; i<info.infilecount; i++) { |
1218 |
outfile = make_outfilename(info.infiles[i], b->ext); |
1219 |
if (!outfile) {
|
1220 |
fprintf(stderr, ""POTRACE": %s\n", strerror(errno)); |
1221 |
exit(2);
|
1222 |
} |
1223 |
fin = my_fopen_read(info.infiles[i]); |
1224 |
if (!fin) {
|
1225 |
fprintf(stderr, ""POTRACE": %s: %s\n", info.infiles[i], strerror(errno)); |
1226 |
exit(2);
|
1227 |
} |
1228 |
fout = my_fopen_write(outfile); |
1229 |
if (!fout) {
|
1230 |
fprintf(stderr, ""POTRACE": %s: %s\n", outfile, strerror(errno)); |
1231 |
exit(2);
|
1232 |
} |
1233 |
if (b->init_f) {
|
1234 |
TRY(b->init_f(fout)); |
1235 |
} |
1236 |
process_file(b, info.infiles[i], outfile, fin, fout); |
1237 |
if (b->term_f) {
|
1238 |
TRY(b->term_f(fout)); |
1239 |
} |
1240 |
my_fclose(fin, info.infiles[i]); |
1241 |
my_fclose(fout, outfile); |
1242 |
free(outfile); |
1243 |
} |
1244 |
return 0; |
1245 |
|
1246 |
} else { /* infiles to outfile */ |
1247 |
|
1248 |
if (!b->multi && info.infilecount >= 2) { |
1249 |
fprintf(stderr, ""POTRACE": cannot use multiple input files with -o in %s mode\n", b->name); |
1250 |
exit(1);
|
1251 |
} |
1252 |
|
1253 |
fout = my_fopen_write(info.outfile); |
1254 |
if (!fout) {
|
1255 |
fprintf(stderr, ""POTRACE": %s: %s\n", info.outfile, strerror(errno)); |
1256 |
exit(2);
|
1257 |
} |
1258 |
if (b->init_f) {
|
1259 |
TRY(b->init_f(fout)); |
1260 |
} |
1261 |
for (i=0; i<info.infilecount; i++) { |
1262 |
fin = my_fopen_read(info.infiles[i]); |
1263 |
if (!fin) {
|
1264 |
fprintf(stderr, ""POTRACE": %s: %s\n", info.infiles[i], strerror(errno)); |
1265 |
exit(2);
|
1266 |
} |
1267 |
process_file(b, info.infiles[i], info.outfile, fin, fout); |
1268 |
my_fclose(fin, info.infiles[i]); |
1269 |
} |
1270 |
if (b->term_f) {
|
1271 |
TRY(b->term_f(fout)); |
1272 |
} |
1273 |
my_fclose(fout, info.outfile); |
1274 |
return 0; |
1275 |
|
1276 |
} |
1277 |
|
1278 |
/* not reached */
|
1279 |
|
1280 |
try_error:
|
1281 |
fprintf(stderr, ""POTRACE": %s\n", strerror(errno)); |
1282 |
exit(2);
|
1283 |
} |