+char *getSetupFilename()
+{
+ static char *filename = NULL;
+
+ if (filename != NULL)
+ free(filename);
+
+ filename = getPath2(getSetupDir(), SETUP_FILENAME);
+
+ return filename;
+}
+
+static char *getSetupArtworkDir(TreeInfo *ti)
+{
+ static char *artwork_dir = NULL;
+
+ if (artwork_dir != NULL)
+ free(artwork_dir);
+
+ artwork_dir = getPath2(ti->basepath, ti->fullpath);
+
+ return artwork_dir;
+}
+
+static char *getCorrectedImageBasename(char *basename)
+{
+ char *result = basename;
+
+#if defined(PLATFORM_MSDOS)
+ if (program.filename_prefix != NULL)
+ {
+ int prefix_len = strlen(program.filename_prefix);
+
+ if (strncmp(basename, program.filename_prefix, prefix_len) == 0)
+ result = &basename[prefix_len];
+ }
+#endif
+
+ return result;
+}
+
+static boolean fileExists(char *filename)
+{
+#if 0
+ printf("checking file '%s'\n", filename);
+#endif
+
+ return (access(filename, F_OK) == 0);
+}
+
+char *getCustomImageFilename(char *basename)
+{
+ static char *filename = NULL;
+
+ if (filename != NULL)
+ free(filename);
+
+ basename = getCorrectedImageBasename(basename);
+
+ /* 1st try: look for special artwork in current level series directory */
+ filename = getPath3(getCurrentLevelDir(), GRAPHICS_DIRECTORY, basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 2nd try: look for special artwork in private artwork directory */
+ filename = getPath2(getUserGraphicsDir(), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 3rd try: look for special artwork in configured artwork directory */
+ filename = getPath2(getSetupArtworkDir(artwork.gfx_current), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 4th try: look for default artwork in new default artwork directory */
+ filename = getPath2(getDefaultGraphicsDir(GRAPHICS_SUBDIR), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 5th try: look for default artwork in old default artwork directory */
+ filename = getPath2(options.graphics_directory, basename);
+ if (fileExists(filename))
+ return filename;
+
+ return NULL; /* cannot find image file */
+}
+
+char *getCustomSoundFilename(char *basename)
+{
+ static char *filename = NULL;
+
+ if (filename != NULL)
+ free(filename);
+
+ /* 1st try: look for special artwork in current level series directory */
+ filename = getPath3(getCurrentLevelDir(), SOUNDS_DIRECTORY, basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 2nd try: look for special artwork in private artwork directory */
+ filename = getPath2(getUserSoundsDir(), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 3rd try: look for special artwork in configured artwork directory */
+ filename = getPath2(getSetupArtworkDir(artwork.snd_current), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 4th try: look for default artwork in new default artwork directory */
+ filename = getPath2(getDefaultSoundsDir(SOUNDS_SUBDIR), basename);
+ if (fileExists(filename))
+ return filename;
+
+ /* 5th try: look for default artwork in old default artwork directory */
+ filename = getPath2(options.sounds_directory, basename);
+ if (fileExists(filename))
+ return filename;
+
+ return NULL; /* cannot find image file */
+}
+
+char *getCustomSoundConfigFilename()
+{
+ return getCustomSoundFilename(SOUNDSINFO_FILENAME);
+}
+
+char *getCustomMusicDirectory(void)
+{
+ static char *directory = NULL;
+
+ if (directory != NULL)
+ free(directory);
+
+ /* 1st try: look for special artwork in current level series directory */
+ directory = getPath2(getCurrentLevelDir(), MUSIC_DIRECTORY);
+ if (fileExists(directory))
+ return directory;
+
+ /* 2nd try: look for special artwork in private artwork directory */
+ directory = getStringCopy(getUserMusicDir());
+ if (fileExists(directory))
+ return directory;
+
+ /* 3rd try: look for special artwork in configured artwork directory */
+ directory = getStringCopy(getSetupArtworkDir(artwork.mus_current));
+ if (fileExists(directory))
+ return directory;
+
+ /* 4th try: look for default artwork in new default artwork directory */
+ directory = getStringCopy(getDefaultMusicDir(MUSIC_SUBDIR));
+ if (fileExists(directory))
+ return directory;
+
+ /* 5th try: look for default artwork in old default artwork directory */
+ directory = getStringCopy(options.music_directory);
+ if (fileExists(directory))
+ return directory;
+
+ return NULL; /* cannot find image file */
+}
+