1 files changed, 129 insertions, 0 deletions
diff --git a/android/utils/path.c b/android/utils/path.c
index 9dd238e..b15b6de 100644
--- a/android/utils/path.c
+++ b/android/utils/path.c
@@ -101,6 +101,111 @@ path_parent( const char*  path, int  levels )
     return result;
 }
 
+static char*
+substring_dup( const char*  start, const char*  end )
+{
+    int    len    = end - start;
+    char*  result = android_alloc(len+1);
+    memcpy(result, start, len);
+    result[len] = 0;
+    return result;
+}
+
+int
+path_split( const char*  path, char* *pdirname, char* *pbasename )
+{
+    const char*  end = path + strlen(path);
+    const char*  last;
+    char*        basename;
+
+    /* prepare for errors */
+    if (pdirname)
+        *pdirname = NULL;
+    if (pbasename)
+        *pbasename = NULL;
+
+    /* handle empty path case */
+    if (end == path) {
+        return -1;
+    }
+
+    /* strip trailing path separators */
+    while (end > path && ispathsep(end[-1]))
+        end -= 1;
+
+    /* handle "/" and degenerate cases like "////" */
+    if (end == path) {
+        return -1;
+    }
+
+    /* find last separator */
+    last = end;
+    while (last > path && !ispathsep(last[-1]))
+        last -= 1;
+
+    /* handle cases where there is no path separator */
+    if (last == path) {
+        if (pdirname)
+            *pdirname  = ASTRDUP(".");
+        if (pbasename)
+            *pbasename = substring_dup(path,end);
+        return 0;
+    }
+
+    /* handle "/foo" */
+    if (last == path+1) {
+        if (pdirname)
+            *pdirname  = ASTRDUP("/");
+        if (pbasename)
+            *pbasename = substring_dup(path+1,end);
+        return 0;
+    }
+
+    /* compute basename */
+    basename = substring_dup(last,end);
+    if (strcmp(basename, ".") == 0 || strcmp(basename, "..") == 0) {
+        AFREE(basename);
+        return -1;
+    }
+
+    if (pbasename)
+        *pbasename = basename;
+    else {
+        AFREE(basename);
+    }
+
+    /* compute dirname */
+    if (pdirname != NULL)
+        *pdirname = substring_dup(path,last-1);
+
+    return 0;
+}
+
+char*
+path_basename( const char*  path )
+{
+    char*  basename;
+
+    if (path_split(path, NULL, &basename) < 0)
+        return NULL;
+
+    return basename;
+}
+
+char*
+path_dirname( const char*  path )
+{
+    char*  dirname;
+
+    if (path_split(path, &dirname, NULL) < 0)
+        return NULL;
+
+    return dirname;
+}
+
+
+
+
 
 /** MISC FILE AND DIRECTORY HANDLING
  **/
@@ -290,6 +395,30 @@ path_get_size( const char*  path, uint64_t  *psize )
 }
 
 
+ABool
+path_is_absolute( const char*  path )
+{
+#ifdef _WIN32
+    if (path == NULL)
+        return 0;
+
+    if (path[0] == '/' || path[0] == '\\')
+        return 1;
+
+    /* 'C:' is always considered to be absolute
+     * even if used with a relative path like C:foo which
+     * is different from C:\foo
+     */
+    if (path[0] != 0 && path[1] == ':')
+        return 1;
+
+    return 0;
+#else
+    return (path != NULL && path[0] == '/');
+#endif
+}
+
+
 /** OTHER FILE UTILITIES
  **
  **  path_empty_file() creates an empty file at a given path location.