// edtFTPnet
//
// Copyright (C) 2004 Enterprise Distributed Technologies Ltd
//
// www.enterprisedt.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Bug fixes, suggestions and comments should posted on
// http://www.enterprisedt.com/forums/index.php
//
// Change Log:
//
// $Log: WindowsFileParser.cs,v $
// Revision 1.16 2009-03-03 05:36:49 bruceb
// net/cf fix
//
// Revision 1.15 2009-02-05 05:22:21 bruceb
// fix hh -> HH bug
//
// Revision 1.14 2008-08-26 00:15:55 bruceb
// return null rather than throw exception
//
// Revision 1.13 2008-07-15 05:42:57 bruceb
// refactor parsing code
//
// Revision 1.12 2007-05-23 00:29:36 hans
// Added TimeIncludesSeconds property.
//
// Revision 1.11 2007-05-15 01:05:46 bruceb
// extra data format
//
// Revision 1.10 2006/11/17 15:38:42 bruceb
// rename Logger to string
//
// Revision 1.9 2006/06/28 22:19:10 hans
// Tidied up imports
//
// Revision 1.7 2006/06/22 12:37:38 bruceb
// use string.split
//
// Revision 1.6 2005/02/07 17:19:34 bruceb
// support for setting the CultureInfo
//
// Revision 1.5 2004/11/06 11:10:02 bruceb
// tidied namespaces, changed IOException to SystemException
//
// Revision 1.4 2004/11/05 20:00:28 bruceb
// cleaned up namespaces
//
// Revision 1.3 2004/10/29 09:41:44 bruceb
// removed /// in file header
//
//
//
using System;
using System.Globalization;
using EnterpriseDT.Util;
using EnterpriseDT.Util.Debug;
namespace EnterpriseDT.Net.Ftp{
/// <summary>
/// Represents a remote Windows file parser
/// </summary>
/// <author> Bruce Blackshaw
/// </author>
/// <version> $Revision: 1.16 $
/// </version>
public class WindowsFileParser:FTPFileParser
{
/// <summary> Logging object</summary>
private Logger log;
/// <summary>Date format</summary>
private static readonly string format1 = "MM'-'dd'-'yy hh':'mmtt";
/// <summary>Date format</summary>
private static readonly string format2 = "MM'-'dd'-'yy HH':'mm";
/// <summary>array of formats</summary>
private string[] formats = {format1,format2};
/// <summary> Directory field</summary>
private const string DIR = "<DIR>";
/// <summary>Splitter token</summary>
private char[] sep = {' '};
/// <summary> Number of expected fields</summary>
private const int MIN_EXPECTED_FIELD_COUNT = 4;
/// <summary> Default constructor</summary>
public WindowsFileParser()
{
log = Logger.GetLogger("WindowsFileParser");
}
/// <summary>
/// Get flag indicating whether or not the most recent parse returned seconds.
/// </summary>
public override bool TimeIncludesSeconds
{
get { return false; }
}
public override string ToString()
{
return "Windows";
}
/// <summary>
/// Test for valid format for this parser
/// </summary>
/// <param name="listing">listing to test</param>
/// <returns>true if valid</returns>
public override bool IsValidFormat(string[] listing)
{
int count = Math.Min(listing.Length, 10);
bool dateStart = false;
bool timeColon = false;
bool dirOrFile = false;
for (int i = 0; i < count; i++)
{
if (listing[i].Trim().Length == 0)
continue;
string[] fields = StringSplitter.Split(listing[i]);
if (fields.Length < MIN_EXPECTED_FIELD_COUNT)
continue;
// first & last chars are digits of first field
if (Char.IsDigit(fields[0][0]) && Char.IsDigit(fields[0][fields[0].Length-1]))
dateStart = true;
if (fields[1].IndexOf(':') > 0)
timeColon = true;
if (fields[2].ToUpper() == DIR || Char.IsDigit(fields[2][0]))
dirOrFile = true;
}
if (dateStart && timeColon && dirOrFile)
return true;
log.Debug("Not in Windows format");
return false;
}
/// <summary> Parse server supplied string. Should be in
/// form
/// <![CDATA[
/// 05-17-03 02:47PM 70776 ftp.jar
/// 08-28-03 10:08PM <DIR> EDT SSLTest
/// ]]>
/// </summary>
/// <param name="raw">
/// raw string to parse
/// </param>
public override FTPFile Parse(string raw)
{
string[] fields = StringSplitter.Split(raw);
if (fields.Length < MIN_EXPECTED_FIELD_COUNT)
return null;
// first two fields are date time
string lastModifiedStr = fields[0] + " " + fields[1];
DateTime lastModified = DateTime.MinValue;
try
{
lastModified = DateTime.ParseExact(lastModifiedStr, formats,
ParsingCulture.DateTimeFormat, DateTimeStyles.None);
}
catch (FormatException)
{
log.Warn("Failed to parse date string '" + lastModifiedStr + "'");
}
// dir flag
bool isDir = false;
long size = 0L;
if (fields[2].ToUpper().Equals(DIR.ToUpper()))
isDir = true;
else
{
try
{
size = Int64.Parse(fields[2]);
}
catch (FormatException)
{
log.Warn("Failed to parse size: " + fields[2]);
}
}
// we've got to find the starting point of the name. We
// do this by finding the pos of all the date/time fields, then
// the name - to ensure we don't get tricked up by a date or dir the
// same as the filename, for example
int pos = 0;
bool ok = true;
for (int i = 0; i < 3; i++)
{
pos = raw.IndexOf(fields[i], pos);
if (pos < 0)
{
ok = false;
break;
}
else {
pos += fields[i].Length;
}
}
string name = null;
if (ok)
{
name = raw.Substring(pos).Trim();
}
else
{
log.Warn("Failed to retrieve name: " + raw);
}
return new FTPFile(FTPFile.WINDOWS, raw, name, size, isDir, ref lastModified);
}
}
}
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