diff options
author | Mike Mazur | 2009-03-16 00:12:25 +0000 |
---|---|---|
committer | Mike Mazur | 2009-03-16 00:12:25 +0000 |
commit | f28886e26d32eaf97180d91dcd42fa045990bdd0 (patch) | |
tree | 69f36a36c809c9961758897d43c85413b1d4dd77 /OpenSim/Framework/Archive/TarArchiveReader.cs | |
parent | This patch improves MXP connect and disconnect functionality. (diff) | |
download | opensim-SC_OLD-f28886e26d32eaf97180d91dcd42fa045990bdd0.zip opensim-SC_OLD-f28886e26d32eaf97180d91dcd42fa045990bdd0.tar.gz opensim-SC_OLD-f28886e26d32eaf97180d91dcd42fa045990bdd0.tar.bz2 opensim-SC_OLD-f28886e26d32eaf97180d91dcd42fa045990bdd0.tar.xz |
Rename OpenSim.Framework.Archive to OpenSim.Framework.Serialization
Update using statements and prebuild.xml. Also trim trailing whitespace.
Diffstat (limited to 'OpenSim/Framework/Archive/TarArchiveReader.cs')
-rw-r--r-- | OpenSim/Framework/Archive/TarArchiveReader.cs | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/OpenSim/Framework/Archive/TarArchiveReader.cs b/OpenSim/Framework/Archive/TarArchiveReader.cs deleted file mode 100644 index eee65f5..0000000 --- a/OpenSim/Framework/Archive/TarArchiveReader.cs +++ /dev/null | |||
@@ -1,218 +0,0 @@ | |||
1 | /* | ||
2 | * Copyright (c) Contributors, http://opensimulator.org/ | ||
3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. | ||
4 | * | ||
5 | * Redistribution and use in source and binary forms, with or without | ||
6 | * modification, are permitted provided that the following conditions are met: | ||
7 | * * Redistributions of source code must retain the above copyright | ||
8 | * notice, this list of conditions and the following disclaimer. | ||
9 | * * Redistributions in binary form must reproduce the above copyright | ||
10 | * notice, this list of conditions and the following disclaimer in the | ||
11 | * documentation and/or other materials provided with the distribution. | ||
12 | * * Neither the name of the OpenSim Project nor the | ||
13 | * names of its contributors may be used to endorse or promote products | ||
14 | * derived from this software without specific prior written permission. | ||
15 | * | ||
16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY | ||
17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | ||
18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | ||
19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY | ||
20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | ||
21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | ||
22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | ||
23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | ||
24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | using System; | ||
29 | using System.IO; | ||
30 | using System.Reflection; | ||
31 | using System.Text; | ||
32 | using log4net; | ||
33 | |||
34 | namespace OpenSim.Framework.Archive | ||
35 | { | ||
36 | /// <summary> | ||
37 | /// Temporary code to do the bare minimum required to read a tar archive for our purposes | ||
38 | /// </summary> | ||
39 | public class TarArchiveReader | ||
40 | { | ||
41 | //private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); | ||
42 | |||
43 | public enum TarEntryType | ||
44 | { | ||
45 | TYPE_UNKNOWN = 0, | ||
46 | TYPE_NORMAL_FILE = 1, | ||
47 | TYPE_HARD_LINK = 2, | ||
48 | TYPE_SYMBOLIC_LINK = 3, | ||
49 | TYPE_CHAR_SPECIAL = 4, | ||
50 | TYPE_BLOCK_SPECIAL = 5, | ||
51 | TYPE_DIRECTORY = 6, | ||
52 | TYPE_FIFO = 7, | ||
53 | TYPE_CONTIGUOUS_FILE = 8, | ||
54 | } | ||
55 | |||
56 | protected static ASCIIEncoding m_asciiEncoding = new ASCIIEncoding(); | ||
57 | |||
58 | /// <summary> | ||
59 | /// Binary reader for the underlying stream | ||
60 | /// </summary> | ||
61 | protected BinaryReader m_br; | ||
62 | |||
63 | /// <summary> | ||
64 | /// Used to trim off null chars | ||
65 | /// </summary> | ||
66 | protected char[] m_nullCharArray = new char[] { '\0' }; | ||
67 | |||
68 | /// <summary> | ||
69 | /// Generate a tar reader which reads from the given stream. | ||
70 | /// </summary> | ||
71 | /// <param name="s"></param> | ||
72 | public TarArchiveReader(Stream s) | ||
73 | { | ||
74 | m_br = new BinaryReader(s); | ||
75 | } | ||
76 | |||
77 | /// <summary> | ||
78 | /// Read the next entry in the tar file. | ||
79 | /// </summary> | ||
80 | /// <param name="filePath"></param> | ||
81 | /// <returns>the data for the entry. Returns null if there are no more entries</returns> | ||
82 | public byte[] ReadEntry(out string filePath, out TarEntryType entryType) | ||
83 | { | ||
84 | filePath = String.Empty; | ||
85 | entryType = TarEntryType.TYPE_UNKNOWN; | ||
86 | TarHeader header = ReadHeader(); | ||
87 | |||
88 | if (null == header) | ||
89 | return null; | ||
90 | |||
91 | entryType = header.EntryType; | ||
92 | filePath = header.FilePath; | ||
93 | return ReadData(header.FileSize); | ||
94 | } | ||
95 | |||
96 | /// <summary> | ||
97 | /// Read the next 512 byte chunk of data as a tar header. | ||
98 | /// </summary> | ||
99 | /// <returns>A tar header struct. null if we have reached the end of the archive.</returns> | ||
100 | protected TarHeader ReadHeader() | ||
101 | { | ||
102 | byte[] header = m_br.ReadBytes(512); | ||
103 | |||
104 | // If we've reached the end of the archive we'll be in null block territory, which means | ||
105 | // the next byte will be 0 | ||
106 | if (header[0] == 0) | ||
107 | return null; | ||
108 | |||
109 | TarHeader tarHeader = new TarHeader(); | ||
110 | |||
111 | // If we're looking at a GNU tar long link then extract the long name and pull up the next header | ||
112 | if (header[156] == (byte)'L') | ||
113 | { | ||
114 | int longNameLength = ConvertOctalBytesToDecimal(header, 124, 11); | ||
115 | tarHeader.FilePath = m_asciiEncoding.GetString(ReadData(longNameLength)); | ||
116 | //m_log.DebugFormat("[TAR ARCHIVE READER]: Got long file name {0}", tarHeader.FilePath); | ||
117 | header = m_br.ReadBytes(512); | ||
118 | } | ||
119 | else | ||
120 | { | ||
121 | tarHeader.FilePath = m_asciiEncoding.GetString(header, 0, 100); | ||
122 | tarHeader.FilePath = tarHeader.FilePath.Trim(m_nullCharArray); | ||
123 | //m_log.DebugFormat("[TAR ARCHIVE READER]: Got short file name {0}", tarHeader.FilePath); | ||
124 | } | ||
125 | |||
126 | tarHeader.FileSize = ConvertOctalBytesToDecimal(header, 124, 11); | ||
127 | |||
128 | switch (header[156]) | ||
129 | { | ||
130 | case 0: | ||
131 | tarHeader.EntryType = TarEntryType.TYPE_NORMAL_FILE; | ||
132 | break; | ||
133 | case (byte)'0': | ||
134 | tarHeader.EntryType = TarEntryType.TYPE_NORMAL_FILE; | ||
135 | break; | ||
136 | case (byte)'1': | ||
137 | tarHeader.EntryType = TarEntryType.TYPE_HARD_LINK; | ||
138 | break; | ||
139 | case (byte)'2': | ||
140 | tarHeader.EntryType = TarEntryType.TYPE_SYMBOLIC_LINK; | ||
141 | break; | ||
142 | case (byte)'3': | ||
143 | tarHeader.EntryType = TarEntryType.TYPE_CHAR_SPECIAL; | ||
144 | break; | ||
145 | case (byte)'4': | ||
146 | tarHeader.EntryType = TarEntryType.TYPE_BLOCK_SPECIAL; | ||
147 | break; | ||
148 | case (byte)'5': | ||
149 | tarHeader.EntryType = TarEntryType.TYPE_DIRECTORY; | ||
150 | break; | ||
151 | case (byte)'6': | ||
152 | tarHeader.EntryType = TarEntryType.TYPE_FIFO; | ||
153 | break; | ||
154 | case (byte)'7': | ||
155 | tarHeader.EntryType = TarEntryType.TYPE_CONTIGUOUS_FILE; | ||
156 | break; | ||
157 | } | ||
158 | |||
159 | return tarHeader; | ||
160 | } | ||
161 | |||
162 | /// <summary> | ||
163 | /// Read data following a header | ||
164 | /// </summary> | ||
165 | /// <param name="fileSize"></param> | ||
166 | /// <returns></returns> | ||
167 | protected byte[] ReadData(int fileSize) | ||
168 | { | ||
169 | byte[] data = m_br.ReadBytes(fileSize); | ||
170 | |||
171 | //m_log.DebugFormat("[TAR ARCHIVE READER]: fileSize {0}", fileSize); | ||
172 | |||
173 | // Read the rest of the empty padding in the 512 byte block | ||
174 | if (fileSize % 512 != 0) | ||
175 | { | ||
176 | int paddingLeft = 512 - (fileSize % 512); | ||
177 | |||
178 | //m_log.DebugFormat("[TAR ARCHIVE READER]: Reading {0} padding bytes", paddingLeft); | ||
179 | |||
180 | m_br.ReadBytes(paddingLeft); | ||
181 | } | ||
182 | |||
183 | return data; | ||
184 | } | ||
185 | |||
186 | public void Close() | ||
187 | { | ||
188 | m_br.Close(); | ||
189 | } | ||
190 | |||
191 | /// <summary> | ||
192 | /// Convert octal bytes to a decimal representation | ||
193 | /// </summary> | ||
194 | /// <param name="bytes"></param> | ||
195 | /// <returns></returns> | ||
196 | public static int ConvertOctalBytesToDecimal(byte[] bytes, int startIndex, int count) | ||
197 | { | ||
198 | string oString = m_asciiEncoding.GetString(bytes, startIndex, count); | ||
199 | |||
200 | int d = 0; | ||
201 | |||
202 | foreach (char c in oString) | ||
203 | { | ||
204 | d <<= 3; | ||
205 | d |= c - '0'; | ||
206 | } | ||
207 | |||
208 | return d; | ||
209 | } | ||
210 | } | ||
211 | |||
212 | public class TarHeader | ||
213 | { | ||
214 | public string FilePath; | ||
215 | public int FileSize; | ||
216 | public TarArchiveReader.TarEntryType EntryType; | ||
217 | } | ||
218 | } | ||