diff options
Diffstat (limited to 'libXpm/src/CrBufFrI.c')
| -rw-r--r-- | libXpm/src/CrBufFrI.c | 900 |
1 files changed, 449 insertions, 451 deletions
diff --git a/libXpm/src/CrBufFrI.c b/libXpm/src/CrBufFrI.c index a53b1177b..b191037dc 100644 --- a/libXpm/src/CrBufFrI.c +++ b/libXpm/src/CrBufFrI.c @@ -1,451 +1,449 @@ -/* - * Copyright (C) 1989-95 GROUPE BULL - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to - * deal in the Software without restriction, including without limitation the - * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or - * sell copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - * - * Except as contained in this notice, the name of GROUPE BULL shall not be - * used in advertising or otherwise to promote the sale, use or other dealings - * in this Software without prior written authorization from GROUPE BULL. - */ - -/*****************************************************************************\ -* CrBufFrI.c: * -* * -* XPM library * -* Scan an image and possibly its mask and create an XPM buffer * -* * -* Developed by Arnaud Le Hors * -\*****************************************************************************/ - -/* October 2004, source code review by Thomas Biege <thomas@suse.de> */ - -/* $XFree86$ */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "XpmI.h" - -LFUNC(WriteColors, int, (char **dataptr, unsigned int *data_size, - unsigned int *used_size, XpmColor *colors, - unsigned int ncolors, unsigned int cpp)); - -LFUNC(WritePixels, void, (char *dataptr, unsigned int data_size, - unsigned int *used_size, - unsigned int width, unsigned int height, - unsigned int cpp, unsigned int *pixels, - XpmColor *colors)); - -LFUNC(WriteExtensions, void, (char *dataptr, unsigned int data_size, - unsigned int *used_size, - XpmExtension *ext, unsigned int num)); - -LFUNC(ExtensionsSize, unsigned int, (XpmExtension *ext, unsigned int num)); -LFUNC(CommentsSize, int, (XpmInfo *info)); - -int -XpmCreateBufferFromImage( - Display *display, - char **buffer_return, - XImage *image, - XImage *shapeimage, - XpmAttributes *attributes) -{ - XpmImage xpmimage; - XpmInfo info; - int ErrorStatus; - - /* initialize return value */ - if (buffer_return) - *buffer_return = NULL; - - /* create an XpmImage from the image */ - ErrorStatus = XpmCreateXpmImageFromImage(display, image, shapeimage, - &xpmimage, attributes); - if (ErrorStatus != XpmSuccess) - return (ErrorStatus); - - /* create the buffer from the XpmImage */ - if (attributes) { - xpmSetInfo(&info, attributes); - ErrorStatus = - XpmCreateBufferFromXpmImage(buffer_return, &xpmimage, &info); - } else - ErrorStatus = - XpmCreateBufferFromXpmImage(buffer_return, &xpmimage, NULL); - - /* free the XpmImage */ - XpmFreeXpmImage(&xpmimage); - - return (ErrorStatus); -} - - -#undef RETURN -#define RETURN(status) \ -do \ -{ \ - ErrorStatus = status; \ - goto error; \ -}while(0) - -int -XpmCreateBufferFromXpmImage( - char **buffer_return, - XpmImage *image, - XpmInfo *info) -{ - /* calculation variables */ - int ErrorStatus; - char buf[BUFSIZ]; - unsigned int cmts, extensions, ext_size = 0; - unsigned int l, cmt_size = 0; - char *ptr = NULL, *p; - unsigned int ptr_size, used_size, tmp; - - *buffer_return = NULL; - - cmts = info && (info->valuemask & XpmComments); - extensions = info && (info->valuemask & XpmExtensions) - && info->nextensions; - - /* compute the extensions and comments size */ - if (extensions) - ext_size = ExtensionsSize(info->extensions, info->nextensions); - if (cmts) - cmt_size = CommentsSize(info); - - /* write the header line */ -#ifndef VOID_SPRINTF - used_size = -#endif - sprintf(buf, "/* XPM */\nstatic char * image_name[] = {\n"); -#ifdef VOID_SPRINTF - used_size = strlen(buf); -#endif - ptr_size = used_size + ext_size + cmt_size + 1; /* ptr_size can't be 0 */ - if(ptr_size <= used_size || - ptr_size <= ext_size || - ptr_size <= cmt_size) - { - return XpmNoMemory; - } - ptr = (char *) XpmMalloc(ptr_size); - if (!ptr) - return XpmNoMemory; - strcpy(ptr, buf); - - /* write the values line */ - if (cmts && info->hints_cmt) { -#ifndef VOID_SPRINTF - used_size += -#endif - snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->hints_cmt); -#ifdef VOID_SPRINTF - used_size += strlen(info->hints_cmt) + 5; -#endif - } -#ifndef VOID_SPRINTF - l = -#endif - sprintf(buf, "\"%d %d %d %d", image->width, image->height, - image->ncolors, image->cpp); -#ifdef VOID_SPRINTF - l = strlen(buf); -#endif - - if (info && (info->valuemask & XpmHotspot)) { -#ifndef VOID_SPRINTF - l += -#endif - snprintf(buf + l, sizeof(buf)-l, " %d %d", info->x_hotspot, info->y_hotspot); -#ifdef VOID_SPRINTF - l = strlen(buf); -#endif - } - if (extensions) { -#ifndef VOID_SPRINTF - l += -#endif - sprintf(buf + l, " XPMEXT"); -#ifdef VOID_SPRINTF - l = strlen(buf); -#endif - } -#ifndef VOID_SPRINTF - l += -#endif - sprintf(buf + l, "\",\n"); -#ifdef VOID_SPRINTF - l = strlen(buf); -#endif - ptr_size += l; - if(ptr_size <= l) - RETURN(XpmNoMemory); - p = (char *) XpmRealloc(ptr, ptr_size); - if (!p) - RETURN(XpmNoMemory); - ptr = p; - strcpy(ptr + used_size, buf); - used_size += l; - - /* write colors */ - if (cmts && info->colors_cmt) { -#ifndef VOID_SPRINTF - used_size += -#endif - snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->colors_cmt); -#ifdef VOID_SPRINTF - used_size += strlen(info->colors_cmt) + 5; -#endif - } - ErrorStatus = WriteColors(&ptr, &ptr_size, &used_size, - image->colorTable, image->ncolors, image->cpp); - - if (ErrorStatus != XpmSuccess) - RETURN(ErrorStatus); - - /* - * now we know the exact size we need, realloc the data - * 4 = 1 (for '"') + 3 (for '",\n') - * 1 = - 2 (because the last line does not end with ',\n') + 3 (for '};\n') - */ - if(image->width > UINT_MAX / image->cpp || - (tmp = image->width * image->cpp + 4) <= 4 || - image->height > UINT_MAX / tmp || - (tmp = image->height * tmp + 1) <= 1 || - (ptr_size += tmp) <= tmp) - RETURN(XpmNoMemory); - - p = (char *) XpmRealloc(ptr, ptr_size); - if (!p) - RETURN(XpmNoMemory); - ptr = p; - - /* print pixels */ - if (cmts && info->pixels_cmt) { -#ifndef VOID_SPRINTF - used_size += -#endif - snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->pixels_cmt); -#ifdef VOID_SPRINTF - used_size += strlen(info->pixels_cmt) + 5; -#endif - } - WritePixels(ptr + used_size, ptr_size - used_size, &used_size, image->width, image->height, - image->cpp, image->data, image->colorTable); - - /* print extensions */ - if (extensions) - WriteExtensions(ptr + used_size, ptr_size-used_size, &used_size, - info->extensions, info->nextensions); - - /* close the array */ - strcpy(ptr + used_size, "};\n"); - - *buffer_return = ptr; - - return (XpmSuccess); - -/* exit point in case of error, free only locally allocated variables */ -error: - if (ptr) - XpmFree(ptr); - return (ErrorStatus); -} - - -static int -WriteColors( - char **dataptr, - unsigned int *data_size, - unsigned int *used_size, - XpmColor *colors, - unsigned int ncolors, - unsigned int cpp) -{ - char buf[BUFSIZ] = {0}; - unsigned int a, key, l; - char *s, *s2; - char **defaults; - - *buf = '"'; - for (a = 0; a < ncolors; a++, colors++) { - - defaults = (char **) colors; - s = buf + 1; - if(cpp > (sizeof(buf) - (s-buf))) - return(XpmNoMemory); - strncpy(s, *defaults++, cpp); - s += cpp; - - for (key = 1; key <= NKEYS; key++, defaults++) { - if ((s2 = *defaults)) { -#ifndef VOID_SPRINTF - s += -#endif - /* assume C99 compliance */ - snprintf(s, sizeof(buf) - (s-buf), "\t%s %s", xpmColorKeys[key - 1], s2); -#ifdef VOID_SPRINTF - s += strlen(s); -#endif - /* now let's check if s points out-of-bounds */ - if((s-buf) > sizeof(buf)) - return(XpmNoMemory); - } - } - if(sizeof(buf) - (s-buf) < 4) - return(XpmNoMemory); - strcpy(s, "\",\n"); - l = s + 3 - buf; - if( *data_size >= UINT_MAX-l || - *data_size + l <= *used_size || - (*data_size + l - *used_size) <= sizeof(buf)) - return(XpmNoMemory); - s = (char *) XpmRealloc(*dataptr, *data_size + l); - if (!s) - return (XpmNoMemory); - *data_size += l; - strcpy(s + *used_size, buf); - *used_size += l; - *dataptr = s; - } - return (XpmSuccess); -} - -static void -WritePixels( - char *dataptr, - unsigned int data_size, - unsigned int *used_size, - unsigned int width, - unsigned int height, - unsigned int cpp, - unsigned int *pixels, - XpmColor *colors) -{ - char *s = dataptr; - unsigned int x, y, h; - - if(height <= 1) - return; - - h = height - 1; - for (y = 0; y < h; y++) { - *s++ = '"'; - for (x = 0; x < width; x++, pixels++) { - if(cpp >= (data_size - (s-dataptr))) - return; - strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? :-\ */ - s += cpp; - } - if((data_size - (s-dataptr)) < 4) - return; - strcpy(s, "\",\n"); - s += 3; - } - /* duplicate some code to avoid a test in the loop */ - *s++ = '"'; - for (x = 0; x < width; x++, pixels++) { - if(cpp >= (data_size - (s-dataptr))) - return; - strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? */ - s += cpp; - } - *s++ = '"'; - *used_size += s - dataptr; -} - -static unsigned int -ExtensionsSize( - XpmExtension *ext, - unsigned int num) -{ - unsigned int x, y, a, size; - char **line; - - size = 0; - if(num == 0) - return(0); /* ok? */ - for (x = 0; x < num; x++, ext++) { - /* 11 = 10 (for ',\n"XPMEXT ') + 1 (for '"') */ - size += strlen(ext->name) + 11; - a = ext->nlines; /* how can we trust ext->nlines to be not out-of-bounds? */ - for (y = 0, line = ext->lines; y < a; y++, line++) - /* 4 = 3 (for ',\n"') + 1 (for '"') */ - size += strlen(*line) + 4; - } - /* 13 is for ',\n"XPMENDEXT"' */ - if(size > UINT_MAX - 13) /* unlikely */ - return(0); - return size + 13; -} - -static void -WriteExtensions( - char *dataptr, - unsigned int data_size, - unsigned int *used_size, - XpmExtension *ext, - unsigned int num) -{ - unsigned int x, y, a; - char **line; - char *s = dataptr; - - for (x = 0; x < num; x++, ext++) { -#ifndef VOID_SPRINTF - s += -#endif - snprintf(s, data_size - (s-dataptr), ",\n\"XPMEXT %s\"", ext->name); -#ifdef VOID_SPRINTF - s += strlen(ext->name) + 11; -#endif - a = ext->nlines; - for (y = 0, line = ext->lines; y < a; y++, line++) { -#ifndef VOID_SPRINTF - s += -#endif - snprintf(s, data_size - (s-dataptr), ",\n\"%s\"", *line); -#ifdef VOID_SPRINTF - s += strlen(*line) + 4; -#endif - } - } - strncpy(s, ",\n\"XPMENDEXT\"", data_size - (s-dataptr)-1); - *used_size += s - dataptr + 13; -} - -static int -CommentsSize(XpmInfo *info) -{ - int size = 0; - - /* 5 = 2 (for "/_*") + 3 (for "*_/\n") */ - /* wrap possible but *very* unlikely */ - if (info->hints_cmt) - size += 5 + strlen(info->hints_cmt); - - if (info->colors_cmt) - size += 5 + strlen(info->colors_cmt); - - if (info->pixels_cmt) - size += 5 + strlen(info->pixels_cmt); - - return size; -} +/*
+ * Copyright (C) 1989-95 GROUPE BULL
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * GROUPE BULL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of GROUPE BULL shall not be
+ * used in advertising or otherwise to promote the sale, use or other dealings
+ * in this Software without prior written authorization from GROUPE BULL.
+ */
+
+/*****************************************************************************\
+* CrBufFrI.c: *
+* *
+* XPM library *
+* Scan an image and possibly its mask and create an XPM buffer *
+* *
+* Developed by Arnaud Le Hors *
+\*****************************************************************************/
+
+/* October 2004, source code review by Thomas Biege <thomas@suse.de> */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "XpmI.h"
+
+LFUNC(WriteColors, int, (char **dataptr, unsigned int *data_size,
+ unsigned int *used_size, XpmColor *colors,
+ unsigned int ncolors, unsigned int cpp));
+
+LFUNC(WritePixels, void, (char *dataptr, unsigned int data_size,
+ unsigned int *used_size,
+ unsigned int width, unsigned int height,
+ unsigned int cpp, unsigned int *pixels,
+ XpmColor *colors));
+
+LFUNC(WriteExtensions, void, (char *dataptr, unsigned int data_size,
+ unsigned int *used_size,
+ XpmExtension *ext, unsigned int num));
+
+LFUNC(ExtensionsSize, unsigned int, (XpmExtension *ext, unsigned int num));
+LFUNC(CommentsSize, int, (XpmInfo *info));
+
+int
+XpmCreateBufferFromImage(
+ Display *display,
+ char **buffer_return,
+ XImage *image,
+ XImage *shapeimage,
+ XpmAttributes *attributes)
+{
+ XpmImage xpmimage;
+ XpmInfo info;
+ int ErrorStatus;
+
+ /* initialize return value */
+ if (buffer_return)
+ *buffer_return = NULL;
+
+ /* create an XpmImage from the image */
+ ErrorStatus = XpmCreateXpmImageFromImage(display, image, shapeimage,
+ &xpmimage, attributes);
+ if (ErrorStatus != XpmSuccess)
+ return (ErrorStatus);
+
+ /* create the buffer from the XpmImage */
+ if (attributes) {
+ xpmSetInfo(&info, attributes);
+ ErrorStatus =
+ XpmCreateBufferFromXpmImage(buffer_return, &xpmimage, &info);
+ } else
+ ErrorStatus =
+ XpmCreateBufferFromXpmImage(buffer_return, &xpmimage, NULL);
+
+ /* free the XpmImage */
+ XpmFreeXpmImage(&xpmimage);
+
+ return (ErrorStatus);
+}
+
+
+#undef RETURN
+#define RETURN(status) \
+do \
+{ \
+ ErrorStatus = status; \
+ goto error; \
+}while(0)
+
+int
+XpmCreateBufferFromXpmImage(
+ char **buffer_return,
+ XpmImage *image,
+ XpmInfo *info)
+{
+ /* calculation variables */
+ int ErrorStatus;
+ char buf[BUFSIZ];
+ unsigned int cmts, extensions, ext_size = 0;
+ unsigned int l, cmt_size = 0;
+ char *ptr = NULL, *p;
+ unsigned int ptr_size, used_size, tmp;
+
+ *buffer_return = NULL;
+
+ cmts = info && (info->valuemask & XpmComments);
+ extensions = info && (info->valuemask & XpmExtensions)
+ && info->nextensions;
+
+ /* compute the extensions and comments size */
+ if (extensions)
+ ext_size = ExtensionsSize(info->extensions, info->nextensions);
+ if (cmts)
+ cmt_size = CommentsSize(info);
+
+ /* write the header line */
+#ifndef VOID_SPRINTF
+ used_size =
+#endif
+ sprintf(buf, "/* XPM */\nstatic char * image_name[] = {\n");
+#ifdef VOID_SPRINTF
+ used_size = strlen(buf);
+#endif
+ ptr_size = used_size + ext_size + cmt_size + 1; /* ptr_size can't be 0 */
+ if(ptr_size <= used_size ||
+ ptr_size <= ext_size ||
+ ptr_size <= cmt_size)
+ {
+ return XpmNoMemory;
+ }
+ ptr = (char *) XpmMalloc(ptr_size);
+ if (!ptr)
+ return XpmNoMemory;
+ strcpy(ptr, buf);
+
+ /* write the values line */
+ if (cmts && info->hints_cmt) {
+#ifndef VOID_SPRINTF
+ used_size +=
+#endif
+ snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->hints_cmt);
+#ifdef VOID_SPRINTF
+ used_size += strlen(info->hints_cmt) + 5;
+#endif
+ }
+#ifndef VOID_SPRINTF
+ l =
+#endif
+ sprintf(buf, "\"%d %d %d %d", image->width, image->height,
+ image->ncolors, image->cpp);
+#ifdef VOID_SPRINTF
+ l = strlen(buf);
+#endif
+
+ if (info && (info->valuemask & XpmHotspot)) {
+#ifndef VOID_SPRINTF
+ l +=
+#endif
+ snprintf(buf + l, sizeof(buf)-l, " %d %d", info->x_hotspot, info->y_hotspot);
+#ifdef VOID_SPRINTF
+ l = strlen(buf);
+#endif
+ }
+ if (extensions) {
+#ifndef VOID_SPRINTF
+ l +=
+#endif
+ sprintf(buf + l, " XPMEXT");
+#ifdef VOID_SPRINTF
+ l = strlen(buf);
+#endif
+ }
+#ifndef VOID_SPRINTF
+ l +=
+#endif
+ sprintf(buf + l, "\",\n");
+#ifdef VOID_SPRINTF
+ l = strlen(buf);
+#endif
+ ptr_size += l;
+ if(ptr_size <= l)
+ RETURN(XpmNoMemory);
+ p = (char *) XpmRealloc(ptr, ptr_size);
+ if (!p)
+ RETURN(XpmNoMemory);
+ ptr = p;
+ strcpy(ptr + used_size, buf);
+ used_size += l;
+
+ /* write colors */
+ if (cmts && info->colors_cmt) {
+#ifndef VOID_SPRINTF
+ used_size +=
+#endif
+ snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->colors_cmt);
+#ifdef VOID_SPRINTF
+ used_size += strlen(info->colors_cmt) + 5;
+#endif
+ }
+ ErrorStatus = WriteColors(&ptr, &ptr_size, &used_size,
+ image->colorTable, image->ncolors, image->cpp);
+
+ if (ErrorStatus != XpmSuccess)
+ RETURN(ErrorStatus);
+
+ /*
+ * now we know the exact size we need, realloc the data
+ * 4 = 1 (for '"') + 3 (for '",\n')
+ * 1 = - 2 (because the last line does not end with ',\n') + 3 (for '};\n')
+ */
+ if(image->width > UINT_MAX / image->cpp ||
+ (tmp = image->width * image->cpp + 4) <= 4 ||
+ image->height > UINT_MAX / tmp ||
+ (tmp = image->height * tmp + 1) <= 1 ||
+ (ptr_size += tmp) <= tmp)
+ RETURN(XpmNoMemory);
+
+ p = (char *) XpmRealloc(ptr, ptr_size);
+ if (!p)
+ RETURN(XpmNoMemory);
+ ptr = p;
+
+ /* print pixels */
+ if (cmts && info->pixels_cmt) {
+#ifndef VOID_SPRINTF
+ used_size +=
+#endif
+ snprintf(ptr + used_size, ptr_size-used_size, "/*%s*/\n", info->pixels_cmt);
+#ifdef VOID_SPRINTF
+ used_size += strlen(info->pixels_cmt) + 5;
+#endif
+ }
+ WritePixels(ptr + used_size, ptr_size - used_size, &used_size, image->width, image->height,
+ image->cpp, image->data, image->colorTable);
+
+ /* print extensions */
+ if (extensions)
+ WriteExtensions(ptr + used_size, ptr_size-used_size, &used_size,
+ info->extensions, info->nextensions);
+
+ /* close the array */
+ strcpy(ptr + used_size, "};\n");
+
+ *buffer_return = ptr;
+
+ return (XpmSuccess);
+
+/* exit point in case of error, free only locally allocated variables */
+error:
+ if (ptr)
+ XpmFree(ptr);
+ return (ErrorStatus);
+}
+
+
+static int
+WriteColors(
+ char **dataptr,
+ unsigned int *data_size,
+ unsigned int *used_size,
+ XpmColor *colors,
+ unsigned int ncolors,
+ unsigned int cpp)
+{
+ char buf[BUFSIZ] = {0};
+ unsigned int a, key, l;
+ char *s, *s2;
+ char **defaults;
+
+ *buf = '"';
+ for (a = 0; a < ncolors; a++, colors++) {
+
+ defaults = (char **) colors;
+ s = buf + 1;
+ if(cpp > (sizeof(buf) - (s-buf)))
+ return(XpmNoMemory);
+ strncpy(s, *defaults++, cpp);
+ s += cpp;
+
+ for (key = 1; key <= NKEYS; key++, defaults++) {
+ if ((s2 = *defaults)) {
+#ifndef VOID_SPRINTF
+ s +=
+#endif
+ /* assume C99 compliance */
+ snprintf(s, sizeof(buf) - (s-buf), "\t%s %s", xpmColorKeys[key - 1], s2);
+#ifdef VOID_SPRINTF
+ s += strlen(s);
+#endif
+ /* now let's check if s points out-of-bounds */
+ if((s-buf) > sizeof(buf))
+ return(XpmNoMemory);
+ }
+ }
+ if(sizeof(buf) - (s-buf) < 4)
+ return(XpmNoMemory);
+ strcpy(s, "\",\n");
+ l = s + 3 - buf;
+ if( *data_size >= UINT_MAX-l ||
+ *data_size + l <= *used_size ||
+ (*data_size + l - *used_size) <= sizeof(buf))
+ return(XpmNoMemory);
+ s = (char *) XpmRealloc(*dataptr, *data_size + l);
+ if (!s)
+ return (XpmNoMemory);
+ *data_size += l;
+ strcpy(s + *used_size, buf);
+ *used_size += l;
+ *dataptr = s;
+ }
+ return (XpmSuccess);
+}
+
+static void
+WritePixels(
+ char *dataptr,
+ unsigned int data_size,
+ unsigned int *used_size,
+ unsigned int width,
+ unsigned int height,
+ unsigned int cpp,
+ unsigned int *pixels,
+ XpmColor *colors)
+{
+ char *s = dataptr;
+ unsigned int x, y, h;
+
+ if(height <= 1)
+ return;
+
+ h = height - 1;
+ for (y = 0; y < h; y++) {
+ *s++ = '"';
+ for (x = 0; x < width; x++, pixels++) {
+ if(cpp >= (data_size - (s-dataptr)))
+ return;
+ strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? :-\ */
+ s += cpp;
+ }
+ if((data_size - (s-dataptr)) < 4)
+ return;
+ strcpy(s, "\",\n");
+ s += 3;
+ }
+ /* duplicate some code to avoid a test in the loop */
+ *s++ = '"';
+ for (x = 0; x < width; x++, pixels++) {
+ if(cpp >= (data_size - (s-dataptr)))
+ return;
+ strncpy(s, colors[*pixels].string, cpp); /* how can we trust *pixels? */
+ s += cpp;
+ }
+ *s++ = '"';
+ *used_size += s - dataptr;
+}
+
+static unsigned int
+ExtensionsSize(
+ XpmExtension *ext,
+ unsigned int num)
+{
+ unsigned int x, y, a, size;
+ char **line;
+
+ size = 0;
+ if(num == 0)
+ return(0); /* ok? */
+ for (x = 0; x < num; x++, ext++) {
+ /* 11 = 10 (for ',\n"XPMEXT ') + 1 (for '"') */
+ size += strlen(ext->name) + 11;
+ a = ext->nlines; /* how can we trust ext->nlines to be not out-of-bounds? */
+ for (y = 0, line = ext->lines; y < a; y++, line++)
+ /* 4 = 3 (for ',\n"') + 1 (for '"') */
+ size += strlen(*line) + 4;
+ }
+ /* 13 is for ',\n"XPMENDEXT"' */
+ if(size > UINT_MAX - 13) /* unlikely */
+ return(0);
+ return size + 13;
+}
+
+static void
+WriteExtensions(
+ char *dataptr,
+ unsigned int data_size,
+ unsigned int *used_size,
+ XpmExtension *ext,
+ unsigned int num)
+{
+ unsigned int x, y, a;
+ char **line;
+ char *s = dataptr;
+
+ for (x = 0; x < num; x++, ext++) {
+#ifndef VOID_SPRINTF
+ s +=
+#endif
+ snprintf(s, data_size - (s-dataptr), ",\n\"XPMEXT %s\"", ext->name);
+#ifdef VOID_SPRINTF
+ s += strlen(ext->name) + 11;
+#endif
+ a = ext->nlines;
+ for (y = 0, line = ext->lines; y < a; y++, line++) {
+#ifndef VOID_SPRINTF
+ s +=
+#endif
+ snprintf(s, data_size - (s-dataptr), ",\n\"%s\"", *line);
+#ifdef VOID_SPRINTF
+ s += strlen(*line) + 4;
+#endif
+ }
+ }
+ strncpy(s, ",\n\"XPMENDEXT\"", data_size - (s-dataptr)-1);
+ *used_size += s - dataptr + 13;
+}
+
+static int
+CommentsSize(XpmInfo *info)
+{
+ int size = 0;
+
+ /* 5 = 2 (for "/_*") + 3 (for "*_/\n") */
+ /* wrap possible but *very* unlikely */
+ if (info->hints_cmt)
+ size += 5 + strlen(info->hints_cmt);
+
+ if (info->colors_cmt)
+ size += 5 + strlen(info->colors_cmt);
+
+ if (info->pixels_cmt)
+ size += 5 + strlen(info->pixels_cmt);
+
+ return size;
+}
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