1 DirectoryListParser
2 using System;
3 using System.IO;
4 using System.Net;
5 using System.Text.RegularExpressions;
6 using System.Collections;
7 using System.Collections.Generic;
8
9 namespace WindowsApplicationFTP
10 {
11 public struct FileStruct
12 {
13 public string Flags;
14 public string Owner;
15 public bool IsDirectory;
16 public string CreateTime;
17 public string Name;
18 }
19
20 public enum FileListStyle
21 {
22 UnixStyle,
23 WindowsStyle,
24 Unknown
25 }
26
27 public class DirectoryListParser
28 {
29 private List<FileStruct> _myListArray;
30
31 public FileStruct[] FullListing
32 {
33 get
34 {
35 return _myListArray.ToArray();
36 }
37 }
38
39 public FileStruct[] FileList
40 {
41 get
42 {
43 List<FileStruct> _fileList = new List<FileStruct>();
44 foreach(FileStruct thisstruct in _myListArray)
45 {
46 if(!thisstruct.IsDirectory)
47 {
48 _fileList.Add(thisstruct);
49 }
50 }
51 return _fileList.ToArray();
52 }
53 }
54
55 public FileStruct[] DirectoryList
56 {
57 get
58 {
59 List<FileStruct> _dirList = new List<FileStruct>();
60 foreach(FileStruct thisstruct in _myListArray)
61 {
62 if(thisstruct.IsDirectory)
63 {
64 _dirList.Add(thisstruct);
65 }
66 }
67 return _dirList.ToArray();
68 }
69 }
70
71 public DirectoryListParser(string responseString)
72 {
73 _myListArray = GetList(responseString);
74 }
75
76 private List<FileStruct> GetList(string datastring)
77 {
78 List<FileStruct> myListArray = new List<FileStruct>();
79 string[] dataRecords = datastring.Split('\n');
80 FileListStyle _directoryListStyle = GuessFileListStyle(dataRecords);
81 foreach (string s in dataRecords)
82 {
83 if (_directoryListStyle != FileListStyle.Unknown && s != "")
84 {
85 FileStruct f = new FileStruct();
86 f.Name = "..";
87 switch (_directoryListStyle)
88 {
89 case FileListStyle.UnixStyle:
90 f = ParseFileStructFromUnixStyleRecord(s);
91 break;
92 case FileListStyle.WindowsStyle:
93 f = ParseFileStructFromWindowsStyleRecord(s);
94 break;
95 }
96 if (f.Name != "" && f.Name != "." && f.Name != "..")
97 {
98 myListArray.Add(f);
99 }
100 }
101 }
102 return myListArray;
103 }
104
105 private FileStruct ParseFileStructFromWindowsStyleRecord(string Record)
106 {
107 ///Assuming the record style as
108 /// 02-03-04 07:46PM <DIR> Append
109 FileStruct f = new FileStruct();
110 string processstr = Record.Trim();
111 string dateStr = processstr.Substring(0,8);
112 processstr = (processstr.Substring(8, processstr.Length - 8)).Trim();
113 string timeStr = processstr.Substring(0, 7);
114 processstr = (processstr.Substring(7, processstr.Length - 7)).Trim();
115 f.CreateTime = dateStr + " " + timeStr;
116 if (processstr.Substring(0,5) == "<DIR>")
117 {
118 f.IsDirectory = true;
119 processstr = (processstr.Substring(5, processstr.Length - 5)).Trim();
120 }
121 else
122 {
123 string[] strs = processstr.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
124 processstr = strs[1];
125 f.IsDirectory = false;
126 }
127 f.Name = processstr; //Rest is name
128 return f;
129 }
130
131 public FileListStyle GuessFileListStyle(string[] recordList)
132 {
133 foreach (string s in recordList)
134 {
135 if(s.Length > 10
136 && Regex.IsMatch(s.Substring(0,10),"(-|d)((-|r)(-|w)(-|x)){3}"))
137 {
138 return FileListStyle.UnixStyle;
139 }
140 else if (s.Length > 8
141 && Regex.IsMatch(s.Substring(0, 8), "[0-9]{2}-[0-9]{2}-[0-9]{2}"))
142 {
143 return FileListStyle.WindowsStyle;
144 }
145 }
146 return FileListStyle.Unknown;
147 }
148
149 private FileStruct ParseFileStructFromUnixStyleRecord(string record)
150 {
151 ///Assuming record style as
152 /// dr-xr-xr-x 1 owner group 0 Nov 25 2002 bussys
153 FileStruct f = new FileStruct();
154 if (record[0] == '-' || record[0] == 'd')
155 {// its a valid file record
156 string processstr = record.Trim();
157 f.Flags = processstr.Substring(0, 9);
158 f.IsDirectory = (f.Flags[0] == 'd');
159 processstr = (processstr.Substring(11)).Trim();
160 _cutSubstringFromStringWithTrim(ref processstr, ' ', 0); //skip one part
161 f.Owner = _cutSubstringFromStringWithTrim(ref processstr, ' ', 0);
162 f.CreateTime = getCreateTimeString(record);
163 int fileNameIndex = record.IndexOf(f.CreateTime)+f.CreateTime.Length;
164 f.Name = record.Substring(fileNameIndex).Trim(); //Rest of the part is name
165 }
166 else
167 {
168 f.Name = "";
169 }
170 return f;
171 }
172
173 private string getCreateTimeString(string record)
174 {
175 //Does just basic datetime string validation for demo, not an accurate check
176 //on date and time fields
177 string month = "(jan|feb|mar|apr|may|jun|jul|aug|sep|oct|nov|dec)";
178 string space = @"(\040)+";
179 string day = "([0-9]|[1-3][0-9])";
180 string year = "[1-2][0-9]{3}";
181 string time = "[0-9]{1,2}:[0-9]{2}";
182 Regex dateTimeRegex = new Regex(month+space+day+space+"("+year+"|"+time+")", RegexOptions.IgnoreCase);
183 Match match = dateTimeRegex.Match(record);
184 return match.Value;
185 }
186
187 private string _cutSubstringFromStringWithTrim(ref string s, char c, int startIndex)
188 {
189 int pos1 = s.IndexOf(c, startIndex);
190 string retString = s.Substring(0,pos1);
191 s = (s.Substring(pos1)).Trim();
192 return retString;
193 }
194
195 }
196 }
from : http://www.cnblogs.com/lidaohang/archive/2010/06/25/1764864.html
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