net/ftp/ftp_directory_listing_parser_os2.cc

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "net/ftp/ftp_directory_listing_parser_os2.h"
   6
   7 #include <vector>
   8
   9 #include "base/strings/string_number_conversions.h"
  10 #include "base/strings/string_split.h"
  11 #include "base/strings/string_util.h"
  12 #include "base/strings/utf_string_conversions.h"
  13 #include "base/time/time.h"
  14 #include "net/ftp/ftp_directory_listing_parser.h"
  15 #include "net/ftp/ftp_util.h"
  16
  17 namespace net {
  18
  19 bool ParseFtpDirectoryListingOS2(
  20     const std::vector<base::string16>& lines,
  21     std::vector<FtpDirectoryListingEntry>* entries) {
  22   for (size_t i = 0; i < lines.size(); i++) {
  23     if (lines[i].empty())
  24       continue;
  25
  26     std::vector<base::string16> columns = base::SplitString(
  27         base::CollapseWhitespace(lines[i], false), base::ASCIIToUTF16(" "),
  28         base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
  29
  30     // Every line of the listing consists of the following:
  31     //
  32     //   1. size in bytes (0 for directories)
  33     //   2. type (A for files, DIR for directories)
  34     //   3. date
  35     //   4. time
  36     //   5. filename (may be empty or contain spaces)
  37     //
  38     // For now, make sure we have 1-4, and handle 5 later.
  39     if (columns.size() < 4)
  40       return false;
  41
  42     FtpDirectoryListingEntry entry;
  43     if (!base::StringToInt64(columns[0], &entry.size))
  44       return false;
  45     if (base::EqualsASCII(columns[1], "DIR")) {
  46       if (entry.size != 0)
  47         return false;
  48       entry.type = FtpDirectoryListingEntry::DIRECTORY;
  49       entry.size = -1;
  50     } else if (base::EqualsASCII(columns[1], "A")) {
  51       entry.type = FtpDirectoryListingEntry::FILE;
  52       if (entry.size < 0)
  53         return false;
  54     } else {
  55       return false;
  56     }
  57
  58     if (!FtpUtil::WindowsDateListingToTime(columns[2],
  59                                            columns[3],
  60                                            &entry.last_modified)) {
  61       return false;
  62     }
  63
  64     entry.name = FtpUtil::GetStringPartAfterColumns(lines[i], 4);
  65     if (entry.name.empty()) {
  66       // Some FTP servers send listing entries with empty names.
  67       // It's not obvious how to display such an entry, so ignore them.
  68       // We don't want to make the parsing fail at this point though.
  69       // Other entries can still be useful.
  70       continue;
  71     }
  72
  73     entries->push_back(entry);
  74   }
  75
  76   return true;
  77 }
  78
  79 }  // namespace net