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Diffstat (limited to 'Build/source/libs/potrace/potrace-src/src/backend_eps.c')
-rw-r--r--Build/source/libs/potrace/potrace-src/src/backend_eps.c64
1 files changed, 36 insertions, 28 deletions
diff --git a/Build/source/libs/potrace/potrace-src/src/backend_eps.c b/Build/source/libs/potrace/potrace-src/src/backend_eps.c
index d992a1a2cf8..8cfb91ef218 100644
--- a/Build/source/libs/potrace/potrace-src/src/backend_eps.c
+++ b/Build/source/libs/potrace/potrace-src/src/backend_eps.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001-2015 Peter Selinger.
+/* Copyright (C) 2001-2017 Peter Selinger.
This file is part of Potrace. It is free software and it is covered
by the GNU General Public License. See the file COPYING for details. */
@@ -38,6 +38,8 @@ typedef int color_t;
#define green 0x008000
#define blue 0x0000ff
+#define TRY(x) if (x) goto try_error
+
/* ---------------------------------------------------------------------- */
/* functions for interfacing with compression backend */
@@ -47,7 +49,7 @@ typedef int color_t;
/* print the token to f, but filtered through a compression
filter in case filter!=0 */
-static int (*xship)(FILE *f, int filter, char *s, int len);
+static int (*xship)(FILE *f, int filter, const char *s, int len);
static FILE *xship_file;
/* ship postscript code, filtered */
@@ -67,7 +69,7 @@ static int ship(const char *fmt, ...) {
}
/* ship a postscript comment, unfiltered */
-static int shipcom(char *fmt, ...) {
+static int shipcom(const char *fmt, ...) {
static char buf[4096];
va_list args;
@@ -153,7 +155,7 @@ static void eps_curveto(dpoint_t p1, dpoint_t p2, dpoint_t p3) {
}
/* this procedure returns a statically allocated string */
-static char *eps_colorstring(const color_t col) {
+static const char *eps_colorstring(const color_t col) {
double r, g, b;
static char buf[100];
@@ -399,7 +401,7 @@ static void eps_L(privcurve_t *curve, const color_t col) {
/* postscript macros */
/* special macros for size-optimized rendering of Bezier curves */
-static char *optimacros =
+static const char *optimacros =
"/D{bind def}def\n"
"/R{roll}D\n"
"/K{copy}D\n"
@@ -427,7 +429,7 @@ static char *optimacros =
"/w{%s z fill}D\n";
/* special macros for debug output */
-static char *debugmacros =
+static const char *debugmacros =
"/unit { %f } def\n"
"/box { newpath 0 0 moveto 0 1 lineto 1 1 lineto 1 0 lineto closepath } def\n"
"/circ { newpath 0 0 1 0 360 arc closepath } def\n"
@@ -451,7 +453,7 @@ static int render0(potrace_path_t *plist) {
if (info.longcoding) {
eps_setcolor(info.color);
list_forall (p, plist) {
- eps_path(p->priv->fcurve);
+ TRY(eps_path(p->priv->fcurve));
ship("closepath\n");
if (p->next == NULL || p->next->sign == '+') {
ship("fill\n");
@@ -459,7 +461,7 @@ static int render0(potrace_path_t *plist) {
}
} else {
list_forall (p, plist) {
- eps_path(p->priv->fcurve);
+ TRY(eps_path(p->priv->fcurve));
if (p->next == NULL || p->next->sign == '+') {
ship("b\n");
} else {
@@ -468,6 +470,9 @@ static int render0(potrace_path_t *plist) {
}
}
return 0;
+
+ try_error:
+ return 1;
}
/* Opaque output: alternating black and white */
@@ -476,18 +481,21 @@ static int render0_opaque(potrace_path_t *plist) {
if (info.longcoding) {
list_forall (p, plist) {
- eps_path(p->priv->fcurve);
+ TRY(eps_path(p->priv->fcurve));
ship("closepath\n");
eps_setcolor(p->sign=='+' ? info.color : info.fillcolor);
ship("fill\n");
}
} else {
list_forall (p, plist) {
- eps_path(p->priv->fcurve);
+ TRY(eps_path(p->priv->fcurve));
ship(p->sign=='+' ? "b\n" : "w\n");
}
}
return 0;
+
+ try_error:
+ return 1;
}
/* Debug output type 1 (show optimal polygon) */
@@ -559,7 +567,7 @@ static int render2(potrace_path_t *plist) {
/* output the path */
eps_linewidth(.1);
eps_setcolor(blue);
- eps_path(&p->priv->curve);
+ TRY(eps_path(&p->priv->curve));
ship("closepath\n");
ship("stroke\n");
@@ -568,7 +576,7 @@ static int render2(potrace_path_t *plist) {
/* output opticurve */
eps_linewidth(.05);
eps_setcolor(red);
- eps_path(&p->priv->ocurve);
+ TRY(eps_path(&p->priv->ocurve));
ship("closepath\n");
ship("stroke\n");
@@ -580,6 +588,9 @@ static int render2(potrace_path_t *plist) {
}
}
return 0;
+
+ try_error:
+ return 1;
}
/* Free-style debug output */
@@ -618,7 +629,7 @@ static int render_debug(potrace_path_t *plist) {
/* output the path */
eps_linewidth(.1);
eps_setcolor(blue);
- eps_path(&p->priv->curve);
+ TRY(eps_path(&p->priv->curve));
ship("closepath\n");
ship("stroke\n");
@@ -630,7 +641,7 @@ static int render_debug(potrace_path_t *plist) {
/* output opticurve */
eps_linewidth(.05);
eps_setcolor(red);
- eps_path(&p->priv->ocurve);
+ TRY(eps_path(&p->priv->ocurve));
ship("closepath\n");
ship("stroke\n");
@@ -648,6 +659,9 @@ static int render_debug(potrace_path_t *plist) {
}
}
return 0;
+
+ try_error:
+ return 1;
}
/* select the appropriate rendering function from above */
@@ -686,7 +700,7 @@ static int eps_init(imginfo_t *imginfo) {
char *c0, *c1;
shipcom("%%!PS-Adobe-3.0 EPSF-3.0\n");
- shipcom("%%%%Creator: "POTRACE" "VERSION", written by Peter Selinger 2001-2015\n");
+ shipcom("%%%%Creator: " POTRACE " " VERSION ", written by Peter Selinger 2001-2017\n");
shipcom("%%%%LanguageLevel: %d\n", info.pslevel);
shipcom("%%%%BoundingBox: 0 0 %.0f %.0f\n",
ceil(imginfo->trans.bb[0]+imginfo->lmar+imginfo->rmar),
@@ -725,28 +739,22 @@ static int eps_init(imginfo_t *imginfo) {
return 0;
}
-static int eps_term(void) {
+static void eps_term(void) {
ship("restore\n");
shipcom("%%%%EOF\n");
- return 0;
}
/* public interface for EPS */
int page_eps(FILE *fout, potrace_path_t *plist, imginfo_t *imginfo) {
- int r;
-
eps_callbacks(fout);
- eps_init(imginfo);
-
- r = eps_render(plist);
- if (r) {
- return r;
- }
-
+ TRY(eps_init(imginfo));
+ TRY(eps_render(plist));
eps_term();
-
return 0;
+
+ try_error:
+ return 1;
}
/* ---------------------------------------------------------------------- */
@@ -761,7 +769,7 @@ int init_ps(FILE *fout) {
eps_callbacks(fout);
shipcom("%%!PS-Adobe-3.0\n");
- shipcom("%%%%Creator: "POTRACE" "VERSION", written by Peter Selinger 2001-2015\n");
+ shipcom("%%%%Creator: " POTRACE " " VERSION ", written by Peter Selinger 2001-2017\n");
shipcom("%%%%LanguageLevel: %d\n", info.pslevel);
shipcom("%%%%BoundingBox: 0 0 %d %d\n", info.paperwidth, info.paperheight);
shipcom("%%%%Pages: (atend)\n");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 17:04:30 +0000