1 files changed, 62 insertions, 0 deletions
diff --git a/webkit/fileapi/file_system_util.cc b/webkit/fileapi/file_system_util.cc
new file mode 100644
index 0000000..07aa5a6
--- /dev/null
+++ b/webkit/fileapi/file_system_util.cc
@@ -0,0 +1,62 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "webkit/fileapi/file_system_util.h"
+
+#include "build/build_config.h"
+
+#include "base/file_path.h"
+#include "base/sys_string_conversions.h"
+#include "googleurl/src/gurl.h"
+#include "net/base/escape.h"
+#include "webkit/fileapi/file_system_types.h"
+
+namespace fileapi {
+
+static const char kPersistentDir[] = "/persistent/";
+static const char kTemporaryDir[] = "/temporary/";
+
+bool CrackFileSystemURL(const GURL& url, GURL* origin_url, FileSystemType* type,
+                        FilePath* file_path) {
+  *origin_url = GURL();
+  *type = kFileSystemTypeUnknown;
+  *file_path = FilePath();
+
+  if (url.scheme() != "filesystem")
+    return false;
+
+  GURL bare_url(url.path());
+  *origin_url = bare_url.GetOrigin();
+
+  // The input URL was malformed, bail out early.
+  if (origin_url->is_empty() || bare_url.path().empty())
+    return false;
+
+  std::string path = UnescapeURLComponent(bare_url.path(),
+      UnescapeRule::SPACES | UnescapeRule::URL_SPECIAL_CHARS);
+  if (path.compare(0, strlen(kPersistentDir), kPersistentDir) == 0) {
+    *type = kFileSystemTypePersistent;
+    path = path.substr(strlen(kPersistentDir));
+  } else if (path.compare(0, strlen(kTemporaryDir), kTemporaryDir) == 0) {
+    *type = kFileSystemTypeTemporary;
+    path = path.substr(strlen(kTemporaryDir));
+  } else {
+    return false;
+  }
+
+  // Ensure the path is relative.
+  while (!path.empty() && path[0] == '/')
+    path.erase(0, 1);
+
+#if defined(OS_WIN)
+  const FilePath::StringType& sys_path = base::SysUTF8ToWide(path);
+#elif defined(OS_POSIX)
+  const FilePath::StringType& sys_path = path;
+#endif
+
+  *file_path = FilePath(sys_path);
+  return true;
+}
+
+}  // namespace fileapi