Split FTP LIST parsing code into individual files for each listing style.

net/ftp/ftp_directory_listing_parsers.h

-// 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.
-
-#ifndef NET_FTP_FTP_DIRECTORY_LISTING_PARSERS_H_
-#define NET_FTP_FTP_DIRECTORY_LISTING_PARSERS_H_
-
-#include <queue>
-
-#include "base/basictypes.h"
-#include "base/string16.h"
-#include "base/time.h"
-#include "net/ftp/ftp_server_type_histograms.h"
-
-namespace net {
-
-struct FtpDirectoryListingEntry {
-  enum Type {
-    FILE,
-    DIRECTORY,
-    SYMLINK,
-  };
-
-  Type type;
-  string16 name;
-  int64 size;  // File size, in bytes. -1 if not applicable.
-
-  // Last modified time, in local time zone.
-  base::Time last_modified;
-};
-
-class FtpDirectoryListingParser {
- public:
-  virtual ~FtpDirectoryListingParser();
-
-  virtual FtpServerType GetServerType() const = 0;
-
-  // Adds |line| to the internal parsing buffer. Returns true on success.
-  virtual bool ConsumeLine(const string16& line) = 0;
-
-  // Called after all input has been consumed. Returns true if the parser
-  // recognizes all received data as a valid listing.
-  virtual bool OnEndOfInput() = 0;
-
-  // Returns true if there is at least one FtpDirectoryListingEntry available.
-  virtual bool EntryAvailable() const = 0;
-
-  // Returns the next entry. It is an error to call this function unless
-  // EntryAvailable returns true.
-  virtual FtpDirectoryListingEntry PopEntry() = 0;
-};
-
-// Parser for "ls -l"-style directory listing.
-class FtpLsDirectoryListingParser : public FtpDirectoryListingParser {
- public:
-  FtpLsDirectoryListingParser();
-
-  // FtpDirectoryListingParser methods:
-  virtual FtpServerType GetServerType() const { return SERVER_LS; }
-  virtual bool ConsumeLine(const string16& line);
-  virtual bool OnEndOfInput();
-  virtual bool EntryAvailable() const;
-  virtual FtpDirectoryListingEntry PopEntry();
-
- private:
-  bool received_nonempty_line_;
-
-  std::queue<FtpDirectoryListingEntry> entries_;
-
-  DISALLOW_COPY_AND_ASSIGN(FtpLsDirectoryListingParser);
-};
-
-class FtpWindowsDirectoryListingParser : public FtpDirectoryListingParser {
- public:
-  FtpWindowsDirectoryListingParser();
-
-  // FtpDirectoryListingParser methods:
-  virtual FtpServerType GetServerType() const { return SERVER_WINDOWS; }
-  virtual bool ConsumeLine(const string16& line);
-  virtual bool OnEndOfInput();
-  virtual bool EntryAvailable() const;
-  virtual FtpDirectoryListingEntry PopEntry();
-
- private:
-  std::queue<FtpDirectoryListingEntry> entries_;
-
-  DISALLOW_COPY_AND_ASSIGN(FtpWindowsDirectoryListingParser);
-};
-
-// Parser for VMS-style directory listing (including variants).
-class FtpVmsDirectoryListingParser : public FtpDirectoryListingParser {
- public:
-  FtpVmsDirectoryListingParser();
-
-  // FtpDirectoryListingParser methods:
-  virtual FtpServerType GetServerType() const { return SERVER_VMS; }
-  virtual bool ConsumeLine(const string16& line);
-  virtual bool OnEndOfInput();
-  virtual bool EntryAvailable() const;
-  virtual FtpDirectoryListingEntry PopEntry();
-
- private:
-  // Consumes listing line which is expected to be a directory listing entry
-  // (and not a comment etc). Returns true on success.
-  bool ConsumeEntryLine(const string16& line);
-
-  enum State {
-    STATE_INITIAL,
-
-    // Indicates that we have received the header, like this:
-    // Directory SYS$SYSDEVICE:[ANONYMOUS]
-    STATE_RECEIVED_HEADER,
-
-    // Indicates that we have received the first listing entry, like this:
-    // MADGOAT.DIR;1              2   9-MAY-2001 22:23:44.85
-    STATE_ENTRIES,
-
-    // Indicates that we have received the last listing entry.
-    STATE_RECEIVED_LAST_ENTRY,
-
-    // Indicates that we have successfully received all parts of the listing.
-    STATE_END,
-  } state_;
-
-  // VMS can use two physical lines if the filename is long. The first line will
-  // contain the filename, and the second line everything else. Store the
-  // filename until we receive the next line.
-  string16 last_filename_;
-  bool last_is_directory_;
-
-  std::queue<FtpDirectoryListingEntry> entries_;
-
-  DISALLOW_COPY_AND_ASSIGN(FtpVmsDirectoryListingParser);
-};
-
-}  // namespace net
-
-#endif  // NET_FTP_FTP_DIRECTORY_LISTING_PARSERS_H_