Fix the "ls -l" FTP LIST format parser to understand correctly

net/ftp/ftp_directory_listing_parsers.cc

 // Copyright (c) 2009 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_parsers.h"
 
 #include "base/string_util.h"
 
 namespace {
 
@@ skipping 218 matching lines @@
   return true;
 }
 
 }  // namespace
 
 namespace net {
 
 FtpDirectoryListingParser::~FtpDirectoryListingParser() {
 }
 
-FtpLsDirectoryListingParser::FtpLsDirectoryListingParser() {
+FtpLsDirectoryListingParser::FtpLsDirectoryListingParser()
+    : received_nonempty_line_(false) {
 }
 
 bool FtpLsDirectoryListingParser::ConsumeLine(const string16& line) {
+  // Allow empty lines only at the beginning of the listing. For example VMS
+  // systems in Unix emulation mode add an empty line before the first listing
+  // entry.
+  if (line.empty() && !received_nonempty_line_)
+    return true;
+  received_nonempty_line_ = true;
+
   std::vector<string16> columns;
   SplitString(CollapseWhitespace(line, false), ' ', &columns);
   if (columns.size() == 11) {
     // Check if it is a symlink.
     if (columns[9] != ASCIIToUTF16("->"))
       return false;
 
     // Drop the symlink target from columns, we don't use it.
     columns.resize(9);
   }
@@ skipping 164 matching lines @@
   if (entry.type != FtpDirectoryListingEntry::FILE)
     entry.size = -1;
   if (!VmsDateListingToTime(columns, &entry.last_modified))
     return false;
 
   entries_.push(entry);
   return true;
 }
 
 }  // namespace net