FTP: add directory listing parser for OS/2 format.

net/ftp/ftp_directory_listing_parser_os2.cc

+// 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 "net/ftp/ftp_directory_listing_parser_os2.h"
+
+#include <vector>
+
+#include "base/string_number_conversions.h"
+#include "base/string_split.h"
+#include "base/string_util.h"
+#include "base/time.h"
+#include "net/ftp/ftp_directory_listing_parser.h"
+#include "net/ftp/ftp_util.h"
+
+namespace net {
+
+bool ParseFtpDirectoryListingOS2(
+    const std::vector<string16>& lines,
+    std::vector<FtpDirectoryListingEntry>* entries) {
+  for (size_t i = 0; i < lines.size(); i++) {
+    if (lines[i].empty())
+      continue;
+
+    std::vector<string16> columns;
+    base::SplitString(CollapseWhitespace(lines[i], false), ' ', &columns);
+
+    // Every line of the listing consists of the following:
+    //
+    //   1. size in bytes (0 for directories)
+    //   2. type (A for files, DIR for directories)
+    //   3. date
+    //   4. time
+    //   5. filename (may be empty or contain spaces)
+    //
+    // For now, make sure we have 1-4, and handle 5 later.
+    if (columns.size() < 4)
+      return false;
+
+    FtpDirectoryListingEntry entry;
+    if (!base::StringToInt64(columns[0], &entry.size))
+      return false;
+    if (EqualsASCII(columns[1], "DIR")) {
+      if (entry.size != 0)
+        return false;
+      entry.type = FtpDirectoryListingEntry::DIRECTORY;
+      entry.size = -1;
+    } else if (EqualsASCII(columns[1], "A")) {
+      entry.type = FtpDirectoryListingEntry::FILE;
+      if (entry.size < 0)
+        return false;
+    } else {
+      return false;
+    }
+
+    if (!FtpUtil::WindowsDateListingToTime(columns[2],
+                                           columns[3],
+                                           &entry.last_modified)) {
+      return false;
+    }
+
+    entry.name = FtpUtil::GetStringPartAfterColumns(lines[i], 4);
+    if (entry.name.empty()) {
+      // Some FTP servers send listing entries with empty names.
+      // It's not obvious how to display such an entry, so ignore them.
+      // We don't want to make the parsing fail at this point though.
+      // Other entries can still be useful.
+      continue;
+    }
+
+    entries->push_back(entry);
+  }
+
+  return true;
+}
+
+}  // namespace net