Extract BookmarksFileImporter from Firefox2Importer.

chrome/browser/bookmarks/bookmark_html_reader.h

+// Copyright 2013 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.
+
+#ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_READER_H_
+#define CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_READER_H_
+
+#include <string>
+#include <vector>
+
+#include "base/callback_forward.h"
+#include "base/string16.h"
+#include "base/time.h"

[tfarina, 2013/05/10 19:58:30]

you can also forward declare this

[Avi (use Gerrit), 2013/05/10 20:29:37]

Done.

+#include "googleurl/src/gurl.h"

[tfarina, 2013/05/10 19:58:30]

can you forward declare this or the base::Callback doesn't allow you?

[Avi (use Gerrit), 2013/05/10 20:29:37]

Done.

+
+struct ImportedBookmarkEntry;
+
+namespace base {
+class FilePath;
+}
+
+namespace history {
+struct ImportedFaviconUsage;
+}
+
+namespace bookmark_html_reader {
+
+// Imports the bookmarks from the specified file.
+//
+// |cancellation_callback| is polled to query if the import should be cancelled;
+// if it returns |true| at any time the import will be cancelled. If
+// |cancellation_callback| is NULL the import will run to completion.
+//
+// |valid_url_callback| is called to determine if a specified URL is valid for
+// import; it returns |true| if it is. If |valid_url_callback| is NULL, all
+// URLs are considered to be valid.
+//
+// |file_path| is the path of the file on disk to import.
+//
+// |bookmarks| is a pointer to a vector, which is filled with the imported
+// bookmarks. It may not be NULL.
+//
+// |favicons| is a pointer to a vector, which is filled with the favicons of
+// imported bookmarks. It may be NULL, in which case favicons are not imported.
+void ImportBookmarksFile(
+    base::Callback<bool(void)>* cancellation_callback,
+    base::Callback<bool(const GURL&)>* valid_url_callback,
+    const base::FilePath& file_path,
+    std::vector<ImportedBookmarkEntry>* bookmarks,
+    std::vector<history::ImportedFaviconUsage>* favicons);
+
+namespace exposed_for_testing {
+
+// The file format that BookmarkHTMLReader parses starts with a heading
+// tag, which contains its title. All bookmarks and sub-folders follow,
+// bracketed by a <DL> tag:
+//   <DT><H3 PERSONAL_TOOLBAR_FOLDER="true" ...>title</H3>
+//   <DL><p>
+//      ... container ...
+//   </DL><p>
+// And a bookmark is presented by a <A> tag:
+//   <DT><A HREF="url" SHORTCUTURL="shortcut" ADD_DATE="11213014"...>name</A>
+// Reference: http://kb.mozillazine.org/Bookmarks.html
+
+bool ParseCharsetFromLine(const std::string& line,
+                          std::string* charset);
+bool ParseFolderNameFromLine(const std::string& line,
+                             const std::string& charset,
+                             base::string16* folder_name,
+                             bool* is_toolbar_folder,
+                             base::Time* add_date);
+// See above, this will also put the data: URL of the favicon into |*favicon|
+// if there is a favicon given. |post_data| is set for POST base keywords to
+// the contents of the actual POST (with %s for the search term).
+bool ParseBookmarkFromLine(const std::string& line,
+                           const std::string& charset,
+                           base::string16* title,
+                           GURL* url,
+                           GURL* favicon,
+                           base::string16* shortcut,
+                           base::Time* add_date,
+                           base::string16* post_data);
+// Save bookmarks imported from browsers with Firefox 2 compatible bookmark
+// systems such as Epiphany. This bookmark format is the same as that of the
+// basic Firefox 2 bookmark, but it misses additional properties and uses
+// lower-case tag:
+//   ...<h1>Bookmarks</h1><dl>
+//   <dt><a href="url">name</a></dt>
+//   <dt><a href="url">name</a></dt>
+//   </dl>
+bool ParseMinimumBookmarkFromLine(const std::string& line,
+                                  const std::string& charset,
+                                  base::string16* title,
+                                  GURL* url);
+
+}  // namespace exposed_for_testing
+
+}  // namespace bookmark_html_reader
+
+#endif  // CHROME_BROWSER_BOOKMARKS_BOOKMARK_HTML_READER_H_