src/utils/icons_utils.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include <stdlib.h>
   4 #include <unistd.h>
   5 #include <errno.h>
   6
   7 /* Default Pixmap path */
   8 #ifndef PIXMAP_PATH
   9 #define PIXMAP_PATH     "/usr/share/applets/pixmaps/"
  10 #define PIXMAP_DEFAULT  "/usr/share/applets/pixmaps/mail.png"
  11 #endif
  12
  13 static char *make_pixmap_path(char *dest, char *src, size_t n)
  14 {
  15         char *icon = NULL;
  16         char md5_str[16 * 2 + 1];
  17         char *p;
  18         size_t j;
  19
  20         /* PIXMAP_PATH + MD5_STR + '.png' + '\0' */
  21         const size_t i = strlen(PIXMAP_PATH) + (2 * 16) + 4 + 1;
  22
  23         if (dest) {
  24                 if (n < i) {
  25                         fprintf(stderr, "%s - Buffer too short! [%lu/%lu]\n",
  26                                 __func__, (unsigned long) n, (unsigned long) i);
  27                         return NULL;
  28                 }
  29                 icon = dest;
  30         } else {
  31                 icon = malloc(i);
  32                 if (!icon) {
  33                         fprintf(stderr, "%s - MALLOC %s\n", __func__, strerror(errno));
  34                         return NULL;
  35                 }
  36         }
  37
  38         memset(md5_str, 0, 16*2 +1);
  39         p = md5_str;
  40         for (j = 0; j < 16; j++) {
  41                 snprintf(p, 3, "%02x", (unsigned char) src[j]);
  42                 p += 2;
  43         }
  44         snprintf(icon, i, "%s%s.png", PIXMAP_PATH, md5_str);
  45 #if DEBUG
  46         fprintf(stderr, "%s - PIXMAP_PATH:\"%s\"\n", __func__, PIXMAP_PATH);
  47 #endif
  48         return icon;
  49 }
  50
  51 char *icon_get_path(char *filename)
  52 {
  53         char *icon = NULL;
  54
  55         icon = make_pixmap_path(NULL, filename, 0);
  56         if (icon) {
  57                 if (access(icon, F_OK | R_OK) != 0) {
  58 #if DEBUG
  59                         fprintf(stderr, "%s - ACCESS:%s %s\n", __func__, icon, strerror(errno));
  60 #endif
  61                         free(icon);
  62                         icon = PIXMAP_DEFAULT;
  63                 }
  64         }
  65
  66 #if DEBUG
  67         fprintf(stderr, "%s - icon:\"%s\"\n", __func__, icon);
  68 #endif
  69         return icon;
  70 }
  71
  72 void icon_free_path(char *icon)
  73 {
  74         if ((icon) && (icon != (char *) &PIXMAP_DEFAULT)) {
  75                 free(icon);
  76                 icon = NULL;
  77         }
  78 }