+ // modifier keys
+ { KSYM_Shift_L, "XK_Shift_L", "left shift" },
+ { KSYM_Shift_R, "XK_Shift_R", "right shift" },
+ { KSYM_Control_L, "XK_Control_L", "left control" },
+ { KSYM_Control_R, "XK_Control_R", "right control" },
+ { KSYM_Meta_L, "XK_Meta_L", "left meta" },
+ { KSYM_Meta_R, "XK_Meta_R", "right meta" },
+ { KSYM_Alt_L, "XK_Alt_L", "left alt" },
+ { KSYM_Alt_R, "XK_Alt_R", "right alt" },
+ { KSYM_Mode_switch, "XK_Mode_switch", "mode switch" }, // Alt-R
+ { KSYM_Multi_key, "XK_Multi_key", "multi key" }, // Ctrl-R
+
+ // some special keys
+ { KSYM_BackSpace, "XK_BackSpace", "backspace" },
+ { KSYM_Delete, "XK_Delete", "delete" },
+ { KSYM_Insert, "XK_Insert", "insert" },
+ { KSYM_Tab, "XK_Tab", "tab" },
+ { KSYM_Home, "XK_Home", "home" },
+ { KSYM_End, "XK_End", "end" },
+ { KSYM_Page_Up, "XK_Page_Up", "page up" },
+ { KSYM_Page_Down, "XK_Page_Down", "page down" },
+
+ { KSYM_Select, "XK_Select", "select" },
+ { KSYM_Menu, "XK_Menu", "menu" }, // menu key
+ { KSYM_Back, "XK_Back", "back" }, // back key
+ { KSYM_PlayPause, "XK_PlayPause", "play/pause" },
+#if defined(PLATFORM_ANDROID)
+ { KSYM_Rewind, "XK_Rewind", "rewind" },
+ { KSYM_FastForward, "XK_FastForward", "fast forward" },
+#endif
+
+ // ASCII 0x20 to 0x40 keys (except numbers)
+ { KSYM_space, "XK_space", "space" },
+ { KSYM_exclam, "XK_exclam", "!" },
+ { KSYM_quotedbl, "XK_quotedbl", "\"" },
+ { KSYM_numbersign, "XK_numbersign", "#" },
+ { KSYM_dollar, "XK_dollar", "$" },
+ { KSYM_percent, "XK_percent", "%" },
+ { KSYM_ampersand, "XK_ampersand", "&" },
+ { KSYM_apostrophe, "XK_apostrophe", "'" },
+ { KSYM_parenleft, "XK_parenleft", "(" },
+ { KSYM_parenright, "XK_parenright", ")" },
+ { KSYM_asterisk, "XK_asterisk", "*" },
+ { KSYM_plus, "XK_plus", "+" },
+ { KSYM_comma, "XK_comma", "," },
+ { KSYM_minus, "XK_minus", "-" },
+ { KSYM_period, "XK_period", "." },
+ { KSYM_slash, "XK_slash", "/" },
+ { KSYM_colon, "XK_colon", ":" },
+ { KSYM_semicolon, "XK_semicolon", ";" },
+ { KSYM_less, "XK_less", "<" },
+ { KSYM_equal, "XK_equal", "=" },
+ { KSYM_greater, "XK_greater", ">" },
+ { KSYM_question, "XK_question", "?" },
+ { KSYM_at, "XK_at", "@" },
+
+ // more ASCII keys
+ { KSYM_bracketleft, "XK_bracketleft", "[" },
+ { KSYM_backslash, "XK_backslash", "\\" },
+ { KSYM_bracketright,"XK_bracketright", "]" },
+ { KSYM_asciicircum, "XK_asciicircum", "^" },
+ { KSYM_underscore, "XK_underscore", "_" },
+ { KSYM_grave, "XK_grave", "grave" },
+ { KSYM_quoteleft, "XK_quoteleft", "quote left" },
+ { KSYM_braceleft, "XK_braceleft", "brace left" },
+ { KSYM_bar, "XK_bar", "bar" },
+ { KSYM_braceright, "XK_braceright", "brace right" },
+ { KSYM_asciitilde, "XK_asciitilde", "~" },
+
+ // special (non-ASCII) keys
+ { KSYM_degree, "XK_degree", "degree" },
+ { KSYM_Adiaeresis, "XK_Adiaeresis", "A umlaut" },
+ { KSYM_Odiaeresis, "XK_Odiaeresis", "O umlaut" },
+ { KSYM_Udiaeresis, "XK_Udiaeresis", "U umlaut" },
+ { KSYM_adiaeresis, "XK_adiaeresis", "a umlaut" },
+ { KSYM_odiaeresis, "XK_odiaeresis", "o umlaut" },
+ { KSYM_udiaeresis, "XK_udiaeresis", "u umlaut" },
+ { KSYM_ssharp, "XK_ssharp", "sharp s" },
+
+ // special (non-ASCII) keys (UTF-8, for reverse mapping only)
+ { KSYM_degree, "XK_degree", "\xc2\xb0" },
+ { KSYM_Adiaeresis, "XK_Adiaeresis", "\xc3\x84" },
+ { KSYM_Odiaeresis, "XK_Odiaeresis", "\xc3\x96" },
+ { KSYM_Udiaeresis, "XK_Udiaeresis", "\xc3\x9c" },
+ { KSYM_adiaeresis, "XK_adiaeresis", "\xc3\xa4" },
+ { KSYM_odiaeresis, "XK_odiaeresis", "\xc3\xb6" },
+ { KSYM_udiaeresis, "XK_udiaeresis", "\xc3\xbc" },
+ { KSYM_ssharp, "XK_ssharp", "\xc3\x9f" },
+
+ // other keys (for reverse mapping only)
+ { KSYM_space, "XK_space", " " },
+
+ // keypad keys are not in numerical order in SDL2
+ { KSYM_KP_0, "XK_KP_0", "keypad 0" },
+ { KSYM_KP_1, "XK_KP_1", "keypad 1" },
+ { KSYM_KP_2, "XK_KP_2", "keypad 2" },
+ { KSYM_KP_3, "XK_KP_3", "keypad 3" },
+ { KSYM_KP_4, "XK_KP_4", "keypad 4" },
+ { KSYM_KP_5, "XK_KP_5", "keypad 5" },
+ { KSYM_KP_6, "XK_KP_6", "keypad 6" },
+ { KSYM_KP_7, "XK_KP_7", "keypad 7" },
+ { KSYM_KP_8, "XK_KP_8", "keypad 8" },
+ { KSYM_KP_9, "XK_KP_9", "keypad 9" },
+
+ // end-of-array identifier
+ { 0, NULL, NULL }
+ };
+
+ int i;
+
+ if (mode == TRANSLATE_KEYSYM_TO_KEYNAME)
+ {
+ static char name_buffer[30];
+ Key key = *keysym;
+
+ if (key >= KSYM_A && key <= KSYM_Z)
+ sprintf(name_buffer, "%c", 'A' + (char)(key - KSYM_A));
+ else if (key >= KSYM_a && key <= KSYM_z)
+ sprintf(name_buffer, "%c", 'a' + (char)(key - KSYM_a));
+ else if (key >= KSYM_0 && key <= KSYM_9)
+ sprintf(name_buffer, "%c", '0' + (char)(key - KSYM_0));
+ else if (key >= KSYM_FKEY_FIRST && key <= KSYM_FKEY_LAST)
+ sprintf(name_buffer, "F%d", (int)(key - KSYM_FKEY_FIRST + 1));
+ else if (key == KSYM_UNDEFINED)
+ strcpy(name_buffer, "(undefined)");
+ else
+ {
+ i = 0;
+
+ do
+ {
+ if (key == translate_key[i].key)
+ {
+ strcpy(name_buffer, translate_key[i].name);
+ break;
+ }
+ }
+ while (translate_key[++i].name);
+
+ if (!translate_key[i].name)
+ strcpy(name_buffer, "(unknown)");
+ }
+
+ *name = name_buffer;
+ }
+ else if (mode == TRANSLATE_KEYSYM_TO_X11KEYNAME)
+ {
+ static char name_buffer[30];
+ Key key = *keysym;
+
+ if (key >= KSYM_A && key <= KSYM_Z)
+ sprintf(name_buffer, "XK_%c", 'A' + (char)(key - KSYM_A));
+ else if (key >= KSYM_a && key <= KSYM_z)
+ sprintf(name_buffer, "XK_%c", 'a' + (char)(key - KSYM_a));
+ else if (key >= KSYM_0 && key <= KSYM_9)
+ sprintf(name_buffer, "XK_%c", '0' + (char)(key - KSYM_0));
+ else if (key >= KSYM_FKEY_FIRST && key <= KSYM_FKEY_LAST)
+ sprintf(name_buffer, "XK_F%d", (int)(key - KSYM_FKEY_FIRST + 1));
+ else if (key == KSYM_UNDEFINED)
+ strcpy(name_buffer, "[undefined]");
+ else
+ {
+ i = 0;
+
+ do
+ {
+ if (key == translate_key[i].key)
+ {
+ strcpy(name_buffer, translate_key[i].x11name);
+ break;
+ }
+ }
+ while (translate_key[++i].x11name);
+
+ if (!translate_key[i].x11name)
+ sprintf(name_buffer, "0x%04x", (unsigned int)key);
+ }
+
+ *x11name = name_buffer;
+ }
+ else if (mode == TRANSLATE_KEYNAME_TO_KEYSYM)
+ {
+ Key key = KSYM_UNDEFINED;
+ char *name_ptr = *name;
+
+ if (strlen(*name) == 1)
+ {
+ char c = name_ptr[0];
+
+ if (c >= 'A' && c <= 'Z')
+ key = KSYM_A + (Key)(c - 'A');
+ else if (c >= 'a' && c <= 'z')
+ key = KSYM_a + (Key)(c - 'a');
+ else if (c >= '0' && c <= '9')
+ key = KSYM_0 + (Key)(c - '0');
+ }
+
+ if (key == KSYM_UNDEFINED)
+ {
+ i = 0;
+
+ do
+ {
+ if (strEqual(translate_key[i].name, *name))
+ {
+ key = translate_key[i].key;
+ break;
+ }
+ }
+ while (translate_key[++i].x11name);
+ }
+
+ if (key == KSYM_UNDEFINED)
+ Warn("getKeyFromKeyName(): not completely implemented");
+
+ *keysym = key;
+ }
+ else if (mode == TRANSLATE_X11KEYNAME_TO_KEYSYM)
+ {
+ Key key = KSYM_UNDEFINED;
+ char *name_ptr = *x11name;
+
+ if (strPrefix(name_ptr, "XK_") && strlen(name_ptr) == 4)
+ {
+ char c = name_ptr[3];
+
+ if (c >= 'A' && c <= 'Z')
+ key = KSYM_A + (Key)(c - 'A');
+ else if (c >= 'a' && c <= 'z')
+ key = KSYM_a + (Key)(c - 'a');
+ else if (c >= '0' && c <= '9')
+ key = KSYM_0 + (Key)(c - '0');
+ }
+ else if (strPrefix(name_ptr, "XK_F") && strlen(name_ptr) <= 6)
+ {
+ char c1 = name_ptr[4];
+ char c2 = name_ptr[5];
+ int d = 0;
+
+ if ((c1 >= '0' && c1 <= '9') &&
+ ((c2 >= '0' && c1 <= '9') || c2 == '\0'))
+ d = atoi(&name_ptr[4]);
+
+ if (d >= 1 && d <= KSYM_NUM_FKEYS)
+ key = KSYM_F1 + (Key)(d - 1);
+ }
+ else if (strPrefix(name_ptr, "XK_"))
+ {
+ i = 0;
+
+ do
+ {
+ if (strEqual(name_ptr, translate_key[i].x11name))
+ {
+ key = translate_key[i].key;
+ break;
+ }
+ }
+ while (translate_key[++i].x11name);
+ }
+ else if (strPrefix(name_ptr, "0x"))
+ {
+ unsigned int value = 0;
+
+ name_ptr += 2;
+
+ while (name_ptr)
+ {
+ char c = *name_ptr++;
+ int d = -1;
+
+ if (c >= '0' && c <= '9')
+ d = (int)(c - '0');
+ else if (c >= 'a' && c <= 'f')
+ d = (int)(c - 'a' + 10);
+ else if (c >= 'A' && c <= 'F')
+ d = (int)(c - 'A' + 10);
+
+ if (d == -1)
+ {
+ value = -1;
+ break;
+ }
+
+ value = value * 16 + d;
+ }
+
+ if (value != -1)
+ key = (Key)value;
+ }
+
+ *keysym = key;
+ }
+}
+
+char *getKeyNameFromKey(Key key)
+{
+ char *name;
+
+ translate_keyname(&key, NULL, &name, TRANSLATE_KEYSYM_TO_KEYNAME);
+ return name;
+}
+
+char *getX11KeyNameFromKey(Key key)
+{
+ char *x11name;
+
+ translate_keyname(&key, &x11name, NULL, TRANSLATE_KEYSYM_TO_X11KEYNAME);
+ return x11name;
+}
+
+Key getKeyFromKeyName(char *name)
+{
+ Key key;
+
+ translate_keyname(&key, NULL, &name, TRANSLATE_KEYNAME_TO_KEYSYM);
+ return key;
+}
+
+Key getKeyFromX11KeyName(char *x11name)
+{
+ Key key;
+
+ translate_keyname(&key, &x11name, NULL, TRANSLATE_X11KEYNAME_TO_KEYSYM);
+ return key;
+}
+
+char getCharFromKey(Key key)
+{
+ static struct
+ {
+ Key key;
+ byte key_char;
+ } translate_key_char[] =
+ {
+ // special (non-ASCII) keys (ISO-8859-1)
+ { KSYM_degree, CHAR_BYTE_DEGREE },
+ { KSYM_Adiaeresis, CHAR_BYTE_UMLAUT_A },
+ { KSYM_Odiaeresis, CHAR_BYTE_UMLAUT_O },
+ { KSYM_Udiaeresis, CHAR_BYTE_UMLAUT_U },
+ { KSYM_adiaeresis, CHAR_BYTE_UMLAUT_a },
+ { KSYM_odiaeresis, CHAR_BYTE_UMLAUT_o },
+ { KSYM_udiaeresis, CHAR_BYTE_UMLAUT_u },
+ { KSYM_ssharp, CHAR_BYTE_SHARP_S },
+
+ // end-of-array identifier
+ { 0, 0 }
+ };
+
+ char *keyname = getKeyNameFromKey(key);
+ char c = 0;
+
+ if (strlen(keyname) == 1)
+ c = keyname[0];
+ else if (strEqual(keyname, "space"))
+ c = ' ';
+ else
+ {
+ int i = 0;
+
+ do
+ {
+ if (key == translate_key_char[i].key)
+ {
+ c = translate_key_char[i].key_char;
+
+ break;
+ }
+ }
+ while (translate_key_char[++i].key_char);
+ }
+
+ return c;
+}
+
+char getValidConfigValueChar(char c)
+{
+ if (c == '#' || // used to mark comments
+ c == '\\') // used to mark continued lines
+ c = 0;
+
+ return c;
+}
+
+
+// ----------------------------------------------------------------------------
+// functions to translate string identifiers to integer or boolean value
+// ----------------------------------------------------------------------------
+
+int get_integer_from_string(char *s)
+{
+ // check for the most common case first
+ if (s[0] >= '0' && s[0] <= '9')
+ return atoi(s);
+
+ char *s_lower = getStringToLower(s);
+ int result = -1;
+
+ if (strEqual(s_lower, "false") ||
+ strEqual(s_lower, "no") ||
+ strEqual(s_lower, "off"))
+ result = 0;
+ else if (strEqual(s_lower, "true") ||
+ strEqual(s_lower, "yes") ||
+ strEqual(s_lower, "on"))
+ result = 1;
+ else
+ result = atoi(s);
+
+ free(s_lower);
+
+ return result;
+}
+
+boolean get_boolean_from_string(char *s)
+{
+ char *s_lower = getStringToLower(s);
+ boolean result = FALSE;
+
+ if (strEqual(s_lower, "true") ||
+ strEqual(s_lower, "yes") ||
+ strEqual(s_lower, "on") ||
+ get_integer_from_string(s) == 1)
+ result = TRUE;
+
+ free(s_lower);
+
+ return result;
+}
+
+int get_switch3_from_string(char *s)
+{
+ char *s_lower = getStringToLower(s);
+ int result = FALSE;
+
+ if (strEqual(s_lower, "true") ||
+ strEqual(s_lower, "yes") ||
+ strEqual(s_lower, "on") ||
+ get_integer_from_string(s) == 1)
+ result = TRUE;
+ else if (strEqual(s_lower, "auto"))
+ result = AUTO;
+
+ free(s_lower);
+
+ return result;
+}
+
+int get_player_nr_from_string(char *s)
+{
+ static char *player_text[] =
+ {
+ "player_1",
+ "player_2",
+ "player_3",
+ "player_4",
+
+ NULL
+ };
+
+ char *s_lower = getStringToLower(s);
+ int result = 0;
+ int i;
+
+ for (i = 0; player_text[i] != NULL; i++)
+ if (strEqual(s_lower, player_text[i]))
+ result = i;
+
+ free(s_lower);
+
+ return result;
+}
+
+
+// ----------------------------------------------------------------------------
+// functions for generic lists
+// ----------------------------------------------------------------------------
+
+ListNode *newListNode(void)
+{
+ return checked_calloc(sizeof(ListNode));
+}
+
+void addNodeToList(ListNode **node_first, char *key, void *content)
+{
+ ListNode *node_new = newListNode();
+
+ node_new->key = getStringCopy(key);
+ node_new->content = content;
+ node_new->next = *node_first;
+
+ if (*node_first)
+ (*node_first)->prev = node_new;
+
+ *node_first = node_new;
+}
+
+void deleteNodeFromList(ListNode **node_first, char *key,
+ void (*destructor_function)(void *))
+{
+ if (node_first == NULL || *node_first == NULL)
+ return;
+
+ if (strEqual((*node_first)->key, key))
+ {
+ // after first recursion, (*node_first)->prev->next == *node_first,
+ // so *node_first would be overwritten with (*node_first)->next
+ // => use a copy of *node_first (and later of (*node_first)->next)
+ ListNode *node = *node_first;
+ ListNode *node_next = node->next;
+
+ checked_free(node->key);
+
+ if (destructor_function)
+ destructor_function(node->content);
+
+ if (node->prev)
+ node->prev->next = node->next;
+
+ if (node->next)
+ node->next->prev = node->prev;
+
+ checked_free(node);
+
+ // after removing node, set list pointer to next valid list node
+ // (this is important if the first node of the list was deleted)
+ *node_first = node_next;
+ }
+ else
+ {
+ deleteNodeFromList(&(*node_first)->next, key, destructor_function);
+ }
+}
+
+ListNode *getNodeFromKey(ListNode *node_first, char *key)
+{
+ if (node_first == NULL)
+ return NULL;
+
+ if (strEqual(node_first->key, key))
+ return node_first;
+ else
+ return getNodeFromKey(node_first->next, key);
+}
+
+int getNumNodes(ListNode *node_first)
+{
+ return (node_first ? 1 + getNumNodes(node_first->next) : 0);
+}
+
+#if 0
+static void dumpList(ListNode *node_first)
+{
+ ListNode *node = node_first;
+
+ while (node)
+ {
+ Debug("internal:dumpList", "['%s' (%d)]", node->key,
+ ((struct ListNodeInfo *)node->content)->num_references);
+ node = node->next;
+ }
+
+ Debug("internal:dumpList", "[%d nodes]", getNumNodes(node_first));
+}
+#endif
+
+
+// ----------------------------------------------------------------------------
+// functions for file handling
+// ----------------------------------------------------------------------------
+
+#define MAX_BUFFER_SIZE 4096
+
+File *openFile(char *filename, char *mode)
+{
+ File *file = checked_calloc(sizeof(File));
+
+ file->file = fopen(filename, mode);
+
+ if (file->file != NULL)
+ {
+ file->filename = getStringCopy(filename);
+
+ return file;
+ }
+
+#if defined(PLATFORM_ANDROID)
+ file->asset_file = SDL_RWFromFile(filename, mode);
+
+ if (file->asset_file != NULL)
+ {
+ file->file_is_asset = TRUE;
+ file->filename = getStringCopy(filename);
+
+ return file;
+ }
+#endif
+
+ checked_free(file);
+
+ return NULL;
+}
+
+int closeFile(File *file)
+{
+ if (file == NULL)
+ return -1;
+
+ int result = 0;
+
+#if defined(PLATFORM_ANDROID)
+ if (file->asset_file)
+ result = SDL_RWclose(file->asset_file);
+#endif
+
+ if (file->file)
+ result = fclose(file->file);
+
+ checked_free(file->filename);
+ checked_free(file);
+
+ return result;
+}
+
+int checkEndOfFile(File *file)
+{
+#if defined(PLATFORM_ANDROID)
+ if (file->file_is_asset)
+ return file->end_of_file;
+#endif
+
+ return feof(file->file);
+}
+
+size_t readFile(File *file, void *buffer, size_t item_size, size_t num_items)
+{
+#if defined(PLATFORM_ANDROID)
+ if (file->file_is_asset)
+ {
+ if (file->end_of_file)
+ return 0;
+
+ size_t num_items_read =
+ SDL_RWread(file->asset_file, buffer, item_size, num_items);
+
+ if (num_items_read < num_items)
+ file->end_of_file = TRUE;
+
+ return num_items_read;
+ }
+#endif
+
+ return fread(buffer, item_size, num_items, file->file);
+}
+
+size_t writeFile(File *file, void *buffer, size_t item_size, size_t num_items)
+{
+ return fwrite(buffer, item_size, num_items, file->file);
+}
+
+int seekFile(File *file, long offset, int whence)
+{
+#if defined(PLATFORM_ANDROID)
+ if (file->file_is_asset)
+ {
+ int sdl_whence = (whence == SEEK_SET ? RW_SEEK_SET :
+ whence == SEEK_CUR ? RW_SEEK_CUR :
+ whence == SEEK_END ? RW_SEEK_END : 0);
+
+ return (SDL_RWseek(file->asset_file, offset, sdl_whence) == -1 ? -1 : 0);
+ }
+#endif
+
+ return fseek(file->file, offset, whence);
+}
+
+int getByteFromFile(File *file)
+{
+#if defined(PLATFORM_ANDROID)
+ if (file->file_is_asset)
+ {
+ if (file->end_of_file)
+ return EOF;
+
+ byte c;
+ size_t num_bytes_read = SDL_RWread(file->asset_file, &c, 1, 1);
+
+ if (num_bytes_read < 1)
+ file->end_of_file = TRUE;
+
+ return (file->end_of_file ? EOF : (int)c);
+ }
+#endif
+
+ return fgetc(file->file);
+}
+
+char *getStringFromFile(File *file, char *line, int size)
+{
+#if defined(PLATFORM_ANDROID)
+ if (file->file_is_asset)
+ {
+ if (file->end_of_file)
+ return NULL;
+
+ char *line_ptr = line;
+ int num_bytes_read = 0;
+
+ while (num_bytes_read < size - 1 &&
+ SDL_RWread(file->asset_file, line_ptr, 1, 1) == 1 &&
+ *line_ptr++ != '\n')
+ num_bytes_read++;
+
+ *line_ptr = '\0';
+
+ if (strlen(line) == 0)
+ {
+ file->end_of_file = TRUE;
+
+ return NULL;
+ }
+
+ return line;
+ }
+#endif
+
+ return fgets(line, size, file->file);
+}
+
+int copyFile(char *filename_from, char *filename_to)
+{
+ File *file_from, *file_to;
+
+ if ((file_from = openFile(filename_from, MODE_READ)) == NULL)
+ {
+ return -1;
+ }
+
+ if ((file_to = openFile(filename_to, MODE_WRITE)) == NULL)
+ {
+ closeFile(file_from);
+
+ return -1;
+ }
+
+ while (!checkEndOfFile(file_from))
+ {
+ byte buffer[MAX_BUFFER_SIZE];
+ size_t bytes_read = readFile(file_from, buffer, 1, MAX_BUFFER_SIZE);
+
+ writeFile(file_to, buffer, 1, bytes_read);
+ }
+
+ closeFile(file_from);
+ closeFile(file_to);
+
+ return 0;
+}
+
+boolean touchFile(char *filename)
+{
+ FILE *file;
+
+ if (!(file = fopen(filename, MODE_WRITE)))
+ {
+ Warn("cannot touch file '%s'", filename);
+
+ return FALSE;
+ }
+
+ fclose(file);
+
+ return TRUE;
+}
+
+
+// ----------------------------------------------------------------------------
+// functions for directory handling
+// ----------------------------------------------------------------------------
+
+Directory *openDirectory(char *dir_name)
+{
+ Directory *dir = checked_calloc(sizeof(Directory));
+
+ dir->dir = opendir(dir_name);
+
+ if (dir->dir != NULL)
+ {
+ dir->filename = getStringCopy(dir_name);
+
+ return dir;
+ }
+
+#if defined(PLATFORM_ANDROID)
+ char *asset_toc_filename = getPath2(dir_name, ASSET_TOC_BASENAME);
+
+ dir->asset_toc_file = SDL_RWFromFile(asset_toc_filename, MODE_READ);
+
+ checked_free(asset_toc_filename);
+
+ if (dir->asset_toc_file != NULL)
+ {
+ dir->directory_is_asset = TRUE;
+ dir->filename = getStringCopy(dir_name);
+
+ return dir;
+ }
+#endif
+
+ checked_free(dir);
+
+ return NULL;
+}
+
+int closeDirectory(Directory *dir)
+{
+ if (dir == NULL)
+ return -1;
+
+ int result = 0;
+
+#if defined(PLATFORM_ANDROID)
+ if (dir->asset_toc_file)
+ result = SDL_RWclose(dir->asset_toc_file);
+#endif
+
+ if (dir->dir)
+ result = closedir(dir->dir);
+
+ if (dir->dir_entry)
+ freeDirectoryEntry(dir->dir_entry);
+
+ checked_free(dir->filename);
+ checked_free(dir);
+
+ return result;
+}
+
+DirectoryEntry *readDirectory(Directory *dir)
+{
+ if (dir->dir_entry)
+ freeDirectoryEntry(dir->dir_entry);
+
+ dir->dir_entry = NULL;
+
+#if defined(PLATFORM_ANDROID)
+ if (dir->directory_is_asset)
+ {
+ char line[MAX_LINE_LEN];
+ char *line_ptr = line;
+ int num_bytes_read = 0;
+
+ while (num_bytes_read < MAX_LINE_LEN - 1 &&
+ SDL_RWread(dir->asset_toc_file, line_ptr, 1, 1) == 1 &&
+ *line_ptr != '\n')
+ {
+ line_ptr++;
+ num_bytes_read++;
+ }
+
+ *line_ptr = '\0';
+
+ if (strlen(line) == 0)
+ return NULL;
+
+ dir->dir_entry = checked_calloc(sizeof(DirectoryEntry));
+
+ dir->dir_entry->is_directory = FALSE;
+ if (line[strlen(line) - 1] == '/')
+ {
+ dir->dir_entry->is_directory = TRUE;
+
+ line[strlen(line) - 1] = '\0';
+ }
+
+ dir->dir_entry->basename = getStringCopy(line);
+ dir->dir_entry->filename = getPath2(dir->filename, line);
+
+ return dir->dir_entry;
+ }
+#endif
+
+ struct dirent *dir_entry = readdir(dir->dir);
+
+ if (dir_entry == NULL)
+ return NULL;
+
+ dir->dir_entry = checked_calloc(sizeof(DirectoryEntry));
+
+ dir->dir_entry->basename = getStringCopy(dir_entry->d_name);
+ dir->dir_entry->filename = getPath2(dir->filename, dir_entry->d_name);
+
+ struct stat file_status;
+
+ dir->dir_entry->is_directory =
+ (stat(dir->dir_entry->filename, &file_status) == 0 &&
+ S_ISDIR(file_status.st_mode));
+
+ return dir->dir_entry;
+}
+
+void freeDirectoryEntry(DirectoryEntry *dir_entry)
+{
+ if (dir_entry == NULL)
+ return;
+
+ checked_free(dir_entry->basename);
+ checked_free(dir_entry->filename);
+ checked_free(dir_entry);
+}
+
+
+// ----------------------------------------------------------------------------
+// functions for checking files and filenames
+// ----------------------------------------------------------------------------
+
+boolean directoryExists(char *dir_name)
+{
+ if (dir_name == NULL)
+ return FALSE;
+
+ struct stat file_status;
+ boolean success = (stat(dir_name, &file_status) == 0 &&
+ S_ISDIR(file_status.st_mode));
+
+#if defined(PLATFORM_ANDROID)
+ if (!success)
+ {
+ // this might be an asset directory; check by trying to open toc file
+ char *asset_toc_filename = getPath2(dir_name, ASSET_TOC_BASENAME);
+ SDL_RWops *file = SDL_RWFromFile(asset_toc_filename, MODE_READ);
+
+ checked_free(asset_toc_filename);
+
+ success = (file != NULL);
+
+ if (success)
+ SDL_RWclose(file);
+ }
+#endif
+
+ return success;
+}
+
+boolean fileExists(char *filename)
+{
+ if (filename == NULL)
+ return FALSE;
+
+ boolean success = (access(filename, F_OK) == 0);
+
+#if defined(PLATFORM_ANDROID)
+ if (!success)
+ {
+ // this might be an asset file; check by trying to open it
+ SDL_RWops *file = SDL_RWFromFile(filename, MODE_READ);
+
+ success = (file != NULL);
+
+ if (success)
+ SDL_RWclose(file);
+ }
+#endif
+
+ return success;
+}
+
+#if 0
+static boolean fileHasPrefix(char *basename, char *prefix)
+{
+ static char *basename_lower = NULL;
+ int basename_length, prefix_length;
+
+ checked_free(basename_lower);
+
+ if (basename == NULL || prefix == NULL)
+ return FALSE;
+
+ basename_lower = getStringToLower(basename);
+ basename_length = strlen(basename_lower);
+ prefix_length = strlen(prefix);
+
+ if (basename_length > prefix_length + 1 &&
+ basename_lower[prefix_length] == '.' &&
+ strncmp(basename_lower, prefix, prefix_length) == 0)
+ return TRUE;
+
+ return FALSE;
+}
+#endif
+
+static boolean fileHasSuffix(char *basename, char *suffix)
+{
+ static char *basename_lower = NULL;
+ int basename_length, suffix_length;
+
+ checked_free(basename_lower);
+
+ if (basename == NULL || suffix == NULL)
+ return FALSE;
+
+ basename_lower = getStringToLower(basename);
+ basename_length = strlen(basename_lower);
+ suffix_length = strlen(suffix);
+
+ if (basename_length > suffix_length + 1 &&
+ basename_lower[basename_length - suffix_length - 1] == '.' &&
+ strEqual(&basename_lower[basename_length - suffix_length], suffix))
+ return TRUE;
+
+ return FALSE;
+}
+
+static boolean FileCouldBeArtwork(char *filename)
+{
+ char *basename = getBaseNamePtr(filename);
+
+ return (!strEqual(basename, ".") &&
+ !strEqual(basename, "..") &&
+ !fileHasSuffix(basename, "txt") &&
+ !fileHasSuffix(basename, "conf") &&
+ !directoryExists(filename));
+}
+
+boolean FileIsGraphic(char *filename)
+{
+ return FileCouldBeArtwork(filename);
+}
+
+boolean FileIsSound(char *filename)
+{
+ return FileCouldBeArtwork(filename);
+}