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authorMark Adler <madler@alumni.caltech.edu>2011-09-09 23:24:02 -0700
committerMark Adler <madler@alumni.caltech.edu>2011-09-09 23:24:02 -0700
commit79fbcdc939b5d515218187a0d5f2526fb632075a (patch)
treedc82b3a452568093ab8a9f365126ba56a419eea1 /contrib/dotzlib
parent7a6955760ba950eb82f57929f8f6c9847c65f0af (diff)
downloadzlib-1.2.2.tar.gz
zlib-1.2.2.tar.bz2
zlib-1.2.2.zip
zlib 1.2.2v1.2.2
Diffstat (limited to 'contrib/dotzlib')
-rw-r--r--contrib/dotzlib/DotZLib.build33
-rw-r--r--contrib/dotzlib/DotZLib.chmbin0 -> 72728 bytes
-rw-r--r--contrib/dotzlib/DotZLib.sln21
-rw-r--r--contrib/dotzlib/DotZLib/AssemblyInfo.cs58
-rw-r--r--contrib/dotzlib/DotZLib/ChecksumImpl.cs202
-rw-r--r--contrib/dotzlib/DotZLib/CircularBuffer.cs83
-rw-r--r--contrib/dotzlib/DotZLib/CodecBase.cs198
-rw-r--r--contrib/dotzlib/DotZLib/Deflater.cs106
-rw-r--r--contrib/dotzlib/DotZLib/DotZLib.cs288
-rw-r--r--contrib/dotzlib/DotZLib/DotZLib.csproj141
-rw-r--r--contrib/dotzlib/DotZLib/GZipStream.cs301
-rw-r--r--contrib/dotzlib/DotZLib/Inflater.cs105
-rw-r--r--contrib/dotzlib/DotZLib/UnitTests.cs274
-rw-r--r--contrib/dotzlib/LICENSE_1_0.txt23
-rw-r--r--contrib/dotzlib/readme.txt58
15 files changed, 1891 insertions, 0 deletions
diff --git a/contrib/dotzlib/DotZLib.build b/contrib/dotzlib/DotZLib.build
new file mode 100644
index 0000000..ed19cc9
--- /dev/null
+++ b/contrib/dotzlib/DotZLib.build
@@ -0,0 +1,33 @@
1<?xml version="1.0" encoding="utf-8" ?>
2<project name="DotZLib" default="build" basedir="./DotZLib">
3 <description>A .Net wrapper library around ZLib1.dll</description>
4
5 <property name="nunit.location" value="c:/program files/NUnit V2.1/bin" />
6 <property name="build.root" value="bin" />
7
8 <property name="debug" value="true" />
9 <property name="nunit" value="true" />
10
11 <property name="build.folder" value="${build.root}/debug/" if="${debug}" />
12 <property name="build.folder" value="${build.root}/release/" unless="${debug}" />
13
14 <target name="clean" description="Remove all generated files">
15 <delete dir="${build.root}" failonerror="false" />
16 </target>
17
18 <target name="build" description="compiles the source code">
19
20 <mkdir dir="${build.folder}" />
21 <csc target="library" output="${build.folder}DotZLib.dll" debug="${debug}">
22 <references basedir="${nunit.location}">
23 <includes if="${nunit}" name="nunit.framework.dll" />
24 </references>
25 <sources>
26 <includes name="*.cs" />
27 <excludes name="UnitTests.cs" unless="${nunit}" />
28 </sources>
29 <arg value="/d:nunit" if="${nunit}" />
30 </csc>
31 </target>
32
33</project> \ No newline at end of file
diff --git a/contrib/dotzlib/DotZLib.chm b/contrib/dotzlib/DotZLib.chm
new file mode 100644
index 0000000..0bc7df7
--- /dev/null
+++ b/contrib/dotzlib/DotZLib.chm
Binary files differ
diff --git a/contrib/dotzlib/DotZLib.sln b/contrib/dotzlib/DotZLib.sln
new file mode 100644
index 0000000..ac45ca0
--- /dev/null
+++ b/contrib/dotzlib/DotZLib.sln
@@ -0,0 +1,21 @@
1Microsoft Visual Studio Solution File, Format Version 8.00
2Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DotZLib", "DotZLib\DotZLib.csproj", "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
3 ProjectSection(ProjectDependencies) = postProject
4 EndProjectSection
5EndProject
6Global
7 GlobalSection(SolutionConfiguration) = preSolution
8 Debug = Debug
9 Release = Release
10 EndGlobalSection
11 GlobalSection(ProjectConfiguration) = postSolution
12 {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.ActiveCfg = Debug|.NET
13 {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Debug.Build.0 = Debug|.NET
14 {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.ActiveCfg = Release|.NET
15 {BB1EE0B1-1808-46CB-B786-949D91117FC5}.Release.Build.0 = Release|.NET
16 EndGlobalSection
17 GlobalSection(ExtensibilityGlobals) = postSolution
18 EndGlobalSection
19 GlobalSection(ExtensibilityAddIns) = postSolution
20 EndGlobalSection
21EndGlobal
diff --git a/contrib/dotzlib/DotZLib/AssemblyInfo.cs b/contrib/dotzlib/DotZLib/AssemblyInfo.cs
new file mode 100644
index 0000000..6fc0fdc
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/AssemblyInfo.cs
@@ -0,0 +1,58 @@
1using System.Reflection;
2using System.Runtime.CompilerServices;
3
4//
5// General Information about an assembly is controlled through the following
6// set of attributes. Change these attribute values to modify the information
7// associated with an assembly.
8//
9[assembly: AssemblyTitle("DotZLib")]
10[assembly: AssemblyDescription(".Net bindings for ZLib compression dll 1.2.x")]
11[assembly: AssemblyConfiguration("")]
12[assembly: AssemblyCompany("Henrik Ravn")]
13[assembly: AssemblyProduct("")]
14[assembly: AssemblyCopyright("(c) 2004 by Henrik Ravn")]
15[assembly: AssemblyTrademark("")]
16[assembly: AssemblyCulture("")]
17
18//
19// Version information for an assembly consists of the following four values:
20//
21// Major Version
22// Minor Version
23// Build Number
24// Revision
25//
26// You can specify all the values or you can default the Revision and Build Numbers
27// by using the '*' as shown below:
28
29[assembly: AssemblyVersion("1.0.*")]
30
31//
32// In order to sign your assembly you must specify a key to use. Refer to the
33// Microsoft .NET Framework documentation for more information on assembly signing.
34//
35// Use the attributes below to control which key is used for signing.
36//
37// Notes:
38// (*) If no key is specified, the assembly is not signed.
39// (*) KeyName refers to a key that has been installed in the Crypto Service
40// Provider (CSP) on your machine. KeyFile refers to a file which contains
41// a key.
42// (*) If the KeyFile and the KeyName values are both specified, the
43// following processing occurs:
44// (1) If the KeyName can be found in the CSP, that key is used.
45// (2) If the KeyName does not exist and the KeyFile does exist, the key
46// in the KeyFile is installed into the CSP and used.
47// (*) In order to create a KeyFile, you can use the sn.exe (Strong Name) utility.
48// When specifying the KeyFile, the location of the KeyFile should be
49// relative to the project output directory which is
50// %Project Directory%\obj\<configuration>. For example, if your KeyFile is
51// located in the project directory, you would specify the AssemblyKeyFile
52// attribute as [assembly: AssemblyKeyFile("..\\..\\mykey.snk")]
53// (*) Delay Signing is an advanced option - see the Microsoft .NET Framework
54// documentation for more information on this.
55//
56[assembly: AssemblyDelaySign(false)]
57[assembly: AssemblyKeyFile("")]
58[assembly: AssemblyKeyName("")]
diff --git a/contrib/dotzlib/DotZLib/ChecksumImpl.cs b/contrib/dotzlib/DotZLib/ChecksumImpl.cs
new file mode 100644
index 0000000..dfe7e90
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/ChecksumImpl.cs
@@ -0,0 +1,202 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Runtime.InteropServices;
10using System.Text;
11
12
13namespace DotZLib
14{
15 #region ChecksumGeneratorBase
16 /// <summary>
17 /// Implements the common functionality needed for all <see cref="ChecksumGenerator"/>s
18 /// </summary>
19 /// <example></example>
20 public abstract class ChecksumGeneratorBase : ChecksumGenerator
21 {
22 /// <summary>
23 /// The value of the current checksum
24 /// </summary>
25 protected uint _current;
26
27 /// <summary>
28 /// Initializes a new instance of the checksum generator base - the current checksum is
29 /// set to zero
30 /// </summary>
31 public ChecksumGeneratorBase()
32 {
33 _current = 0;
34 }
35
36 /// <summary>
37 /// Initializes a new instance of the checksum generator basewith a specified value
38 /// </summary>
39 /// <param name="initialValue">The value to set the current checksum to</param>
40 public ChecksumGeneratorBase(uint initialValue)
41 {
42 _current = initialValue;
43 }
44
45 /// <summary>
46 /// Resets the current checksum to zero
47 /// </summary>
48 public void Reset() { _current = 0; }
49
50 /// <summary>
51 /// Gets the current checksum value
52 /// </summary>
53 public uint Value { get { return _current; } }
54
55 /// <summary>
56 /// Updates the current checksum with part of an array of bytes
57 /// </summary>
58 /// <param name="data">The data to update the checksum with</param>
59 /// <param name="offset">Where in <c>data</c> to start updating</param>
60 /// <param name="count">The number of bytes from <c>data</c> to use</param>
61 /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
62 /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
63 /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
64 /// <remarks>All the other <c>Update</c> methods are implmeneted in terms of this one.
65 /// This is therefore the only method a derived class has to implement</remarks>
66 public abstract void Update(byte[] data, int offset, int count);
67
68 /// <summary>
69 /// Updates the current checksum with an array of bytes.
70 /// </summary>
71 /// <param name="data">The data to update the checksum with</param>
72 public void Update(byte[] data)
73 {
74 Update(data, 0, data.Length);
75 }
76
77 /// <summary>
78 /// Updates the current checksum with the data from a string
79 /// </summary>
80 /// <param name="data">The string to update the checksum with</param>
81 /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
82 public void Update(string data)
83 {
84 Update(Encoding.UTF8.GetBytes(data));
85 }
86
87 /// <summary>
88 /// Updates the current checksum with the data from a string, using a specific encoding
89 /// </summary>
90 /// <param name="data">The string to update the checksum with</param>
91 /// <param name="encoding">The encoding to use</param>
92 public void Update(string data, Encoding encoding)
93 {
94 Update(encoding.GetBytes(data));
95 }
96
97 }
98 #endregion
99
100 #region CRC32
101 /// <summary>
102 /// Implements a CRC32 checksum generator
103 /// </summary>
104 public sealed class CRC32Checksum : ChecksumGeneratorBase
105 {
106 #region DLL imports
107
108 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
109 private static extern uint crc32(uint crc, int data, uint length);
110
111 #endregion
112
113 /// <summary>
114 /// Initializes a new instance of the CRC32 checksum generator
115 /// </summary>
116 public CRC32Checksum() : base() {}
117
118 /// <summary>
119 /// Initializes a new instance of the CRC32 checksum generator with a specified value
120 /// </summary>
121 /// <param name="initialValue">The value to set the current checksum to</param>
122 public CRC32Checksum(uint initialValue) : base(initialValue) {}
123
124 /// <summary>
125 /// Updates the current checksum with part of an array of bytes
126 /// </summary>
127 /// <param name="data">The data to update the checksum with</param>
128 /// <param name="offset">Where in <c>data</c> to start updating</param>
129 /// <param name="count">The number of bytes from <c>data</c> to use</param>
130 /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
131 /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
132 /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
133 public override void Update(byte[] data, int offset, int count)
134 {
135 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
136 if ((offset+count) > data.Length) throw new ArgumentException();
137 GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
138 try
139 {
140 _current = crc32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
141 }
142 finally
143 {
144 hData.Free();
145 }
146 }
147
148 }
149 #endregion
150
151 #region Adler
152 /// <summary>
153 /// Implements a checksum generator that computes the Adler checksum on data
154 /// </summary>
155 public sealed class AdlerChecksum : ChecksumGeneratorBase
156 {
157 #region DLL imports
158
159 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
160 private static extern uint adler32(uint adler, int data, uint length);
161
162 #endregion
163
164 /// <summary>
165 /// Initializes a new instance of the Adler checksum generator
166 /// </summary>
167 public AdlerChecksum() : base() {}
168
169 /// <summary>
170 /// Initializes a new instance of the Adler checksum generator with a specified value
171 /// </summary>
172 /// <param name="initialValue">The value to set the current checksum to</param>
173 public AdlerChecksum(uint initialValue) : base(initialValue) {}
174
175 /// <summary>
176 /// Updates the current checksum with part of an array of bytes
177 /// </summary>
178 /// <param name="data">The data to update the checksum with</param>
179 /// <param name="offset">Where in <c>data</c> to start updating</param>
180 /// <param name="count">The number of bytes from <c>data</c> to use</param>
181 /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
182 /// <exception cref="NullReferenceException"><c>data</c> is a null reference</exception>
183 /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
184 public override void Update(byte[] data, int offset, int count)
185 {
186 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
187 if ((offset+count) > data.Length) throw new ArgumentException();
188 GCHandle hData = GCHandle.Alloc(data, GCHandleType.Pinned);
189 try
190 {
191 _current = adler32(_current, hData.AddrOfPinnedObject().ToInt32()+offset, (uint)count);
192 }
193 finally
194 {
195 hData.Free();
196 }
197 }
198
199 }
200 #endregion
201
202} \ No newline at end of file
diff --git a/contrib/dotzlib/DotZLib/CircularBuffer.cs b/contrib/dotzlib/DotZLib/CircularBuffer.cs
new file mode 100644
index 0000000..16997e9
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/CircularBuffer.cs
@@ -0,0 +1,83 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Diagnostics;
10
11namespace DotZLib
12{
13
14 /// <summary>
15 /// This class implements a circular buffer
16 /// </summary>
17 internal class CircularBuffer
18 {
19 #region Private data
20 private int _capacity;
21 private int _head;
22 private int _tail;
23 private int _size;
24 private byte[] _buffer;
25 #endregion
26
27 public CircularBuffer(int capacity)
28 {
29 Debug.Assert( capacity > 0 );
30 _buffer = new byte[capacity];
31 _capacity = capacity;
32 _head = 0;
33 _tail = 0;
34 _size = 0;
35 }
36
37 public int Size { get { return _size; } }
38
39 public int Put(byte[] source, int offset, int count)
40 {
41 Debug.Assert( count > 0 );
42 int trueCount = Math.Min(count, _capacity - Size);
43 for (int i = 0; i < trueCount; ++i)
44 _buffer[(_tail+i) % _capacity] = source[offset+i];
45 _tail += trueCount;
46 _tail %= _capacity;
47 _size += trueCount;
48 return trueCount;
49 }
50
51 public bool Put(byte b)
52 {
53 if (Size == _capacity) // no room
54 return false;
55 _buffer[_tail++] = b;
56 _tail %= _capacity;
57 ++_size;
58 return true;
59 }
60
61 public int Get(byte[] destination, int offset, int count)
62 {
63 int trueCount = Math.Min(count,Size);
64 for (int i = 0; i < trueCount; ++i)
65 destination[offset + i] = _buffer[(_head+i) % _capacity];
66 _head += trueCount;
67 _head %= _capacity;
68 _size -= trueCount;
69 return trueCount;
70 }
71
72 public int Get()
73 {
74 if (Size == 0)
75 return -1;
76
77 int result = (int)_buffer[_head++ % _capacity];
78 --_size;
79 return result;
80 }
81
82 }
83}
diff --git a/contrib/dotzlib/DotZLib/CodecBase.cs b/contrib/dotzlib/DotZLib/CodecBase.cs
new file mode 100644
index 0000000..954db7d
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/CodecBase.cs
@@ -0,0 +1,198 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Runtime.InteropServices;
10
11namespace DotZLib
12{
13 /// <summary>
14 /// Implements the common functionality needed for all <see cref="Codec"/>s
15 /// </summary>
16 public abstract class CodecBase : Codec, IDisposable
17 {
18
19 #region Data members
20
21 /// <summary>
22 /// Instance of the internal zlib buffer structure that is
23 /// passed to all functions in the zlib dll
24 /// </summary>
25 internal ZStream _ztream = new ZStream();
26
27 /// <summary>
28 /// True if the object instance has been disposed, false otherwise
29 /// </summary>
30 protected bool _isDisposed = false;
31
32 /// <summary>
33 /// The size of the internal buffers
34 /// </summary>
35 protected const int kBufferSize = 16384;
36
37 private byte[] _outBuffer = new byte[kBufferSize];
38 private byte[] _inBuffer = new byte[kBufferSize];
39
40 private GCHandle _hInput;
41 private GCHandle _hOutput;
42
43 private uint _checksum = 0;
44
45 #endregion
46
47 /// <summary>
48 /// Initializes a new instance of the <c>CodeBase</c> class.
49 /// </summary>
50 public CodecBase()
51 {
52 try
53 {
54 _hInput = GCHandle.Alloc(_inBuffer, GCHandleType.Pinned);
55 _hOutput = GCHandle.Alloc(_outBuffer, GCHandleType.Pinned);
56 }
57 catch (Exception)
58 {
59 CleanUp(false);
60 throw;
61 }
62 }
63
64
65 #region Codec Members
66
67 /// <summary>
68 /// Occurs when more processed data are available.
69 /// </summary>
70 public event DataAvailableHandler DataAvailable;
71
72 /// <summary>
73 /// Fires the <see cref="DataAvailable"/> event
74 /// </summary>
75 protected void OnDataAvailable()
76 {
77 if (_ztream.total_out > 0)
78 {
79 if (DataAvailable != null)
80 DataAvailable( _outBuffer, 0, (int)_ztream.total_out);
81 resetOutput();
82 }
83 }
84
85 /// <summary>
86 /// Adds more data to the codec to be processed.
87 /// </summary>
88 /// <param name="data">Byte array containing the data to be added to the codec</param>
89 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
90 public void Add(byte[] data)
91 {
92 Add(data,0,data.Length);
93 }
94
95 /// <summary>
96 /// Adds more data to the codec to be processed.
97 /// </summary>
98 /// <param name="data">Byte array containing the data to be added to the codec</param>
99 /// <param name="offset">The index of the first byte to add from <c>data</c></param>
100 /// <param name="count">The number of bytes to add</param>
101 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
102 /// <remarks>This must be implemented by a derived class</remarks>
103 public abstract void Add(byte[] data, int offset, int count);
104
105 /// <summary>
106 /// Finishes up any pending data that needs to be processed and handled.
107 /// </summary>
108 /// <remarks>This must be implemented by a derived class</remarks>
109 public abstract void Finish();
110
111 /// <summary>
112 /// Gets the checksum of the data that has been added so far
113 /// </summary>
114 public uint Checksum { get { return _checksum; } }
115
116 #endregion
117
118 #region Destructor & IDisposable stuff
119
120 /// <summary>
121 /// Destroys this instance
122 /// </summary>
123 ~CodecBase()
124 {
125 CleanUp(false);
126 }
127
128 /// <summary>
129 /// Releases any unmanaged resources and calls the <see cref="CleanUp()"/> method of the derived class
130 /// </summary>
131 public void Dispose()
132 {
133 CleanUp(true);
134 }
135
136 /// <summary>
137 /// Performs any codec specific cleanup
138 /// </summary>
139 /// <remarks>This must be implemented by a derived class</remarks>
140 protected abstract void CleanUp();
141
142 // performs the release of the handles and calls the dereived CleanUp()
143 private void CleanUp(bool isDisposing)
144 {
145 if (!_isDisposed)
146 {
147 CleanUp();
148 if (_hInput.IsAllocated)
149 _hInput.Free();
150 if (_hOutput.IsAllocated)
151 _hOutput.Free();
152
153 _isDisposed = true;
154 }
155 }
156
157
158 #endregion
159
160 #region Helper methods
161
162 /// <summary>
163 /// Copies a number of bytes to the internal codec buffer - ready for proccesing
164 /// </summary>
165 /// <param name="data">The byte array that contains the data to copy</param>
166 /// <param name="startIndex">The index of the first byte to copy</param>
167 /// <param name="count">The number of bytes to copy from <c>data</c></param>
168 protected void copyInput(byte[] data, int startIndex, int count)
169 {
170 Array.Copy(data, startIndex, _inBuffer,0, count);
171 _ztream.next_in = _hInput.AddrOfPinnedObject();
172 _ztream.total_in = 0;
173 _ztream.avail_in = (uint)count;
174
175 }
176
177 /// <summary>
178 /// Resets the internal output buffers to a known state - ready for processing
179 /// </summary>
180 protected void resetOutput()
181 {
182 _ztream.total_out = 0;
183 _ztream.avail_out = kBufferSize;
184 _ztream.next_out = _hOutput.AddrOfPinnedObject();
185 }
186
187 /// <summary>
188 /// Updates the running checksum property
189 /// </summary>
190 /// <param name="newSum">The new checksum value</param>
191 protected void setChecksum(uint newSum)
192 {
193 _checksum = newSum;
194 }
195 #endregion
196
197 }
198}
diff --git a/contrib/dotzlib/DotZLib/Deflater.cs b/contrib/dotzlib/DotZLib/Deflater.cs
new file mode 100644
index 0000000..d7b8dcc
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/Deflater.cs
@@ -0,0 +1,106 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Diagnostics;
10using System.Runtime.InteropServices;
11
12namespace DotZLib
13{
14
15 /// <summary>
16 /// Implements a data compressor, using the deflate algorithm in the ZLib dll
17 /// </summary>
18 public sealed class Deflater : CodecBase
19 {
20 #region Dll imports
21 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
22 private static extern int deflateInit_(ref ZStream sz, int level, string vs, int size);
23
24 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
25 private static extern int deflate(ref ZStream sz, int flush);
26
27 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
28 private static extern int deflateReset(ref ZStream sz);
29
30 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
31 private static extern int deflateEnd(ref ZStream sz);
32 #endregion
33
34 /// <summary>
35 /// Constructs an new instance of the <c>Deflater</c>
36 /// </summary>
37 /// <param name="level">The compression level to use for this <c>Deflater</c></param>
38 public Deflater(CompressLevel level) : base()
39 {
40 int retval = deflateInit_(ref _ztream, (int)level, Info.Version, Marshal.SizeOf(_ztream));
41 if (retval != 0)
42 throw new ZLibException(retval, "Could not initialize deflater");
43
44 resetOutput();
45 }
46
47 /// <summary>
48 /// Adds more data to the codec to be processed.
49 /// </summary>
50 /// <param name="data">Byte array containing the data to be added to the codec</param>
51 /// <param name="offset">The index of the first byte to add from <c>data</c></param>
52 /// <param name="count">The number of bytes to add</param>
53 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
54 public override void Add(byte[] data, int offset, int count)
55 {
56 if (data == null) throw new ArgumentNullException();
57 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
58 if ((offset+count) > data.Length) throw new ArgumentException();
59
60 int total = count;
61 int inputIndex = offset;
62 int err = 0;
63
64 while (err >= 0 && inputIndex < total)
65 {
66 copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
67 while (err >= 0 && _ztream.avail_in > 0)
68 {
69 err = deflate(ref _ztream, (int)FlushTypes.None);
70 if (err == 0)
71 while (_ztream.avail_out == 0)
72 {
73 OnDataAvailable();
74 err = deflate(ref _ztream, (int)FlushTypes.None);
75 }
76 inputIndex += (int)_ztream.total_in;
77 }
78 }
79 setChecksum( _ztream.adler );
80 }
81
82
83 /// <summary>
84 /// Finishes up any pending data that needs to be processed and handled.
85 /// </summary>
86 public override void Finish()
87 {
88 int err;
89 do
90 {
91 err = deflate(ref _ztream, (int)FlushTypes.Finish);
92 OnDataAvailable();
93 }
94 while (err == 0);
95 setChecksum( _ztream.adler );
96 deflateReset(ref _ztream);
97 resetOutput();
98 }
99
100 /// <summary>
101 /// Closes the internal zlib deflate stream
102 /// </summary>
103 protected override void CleanUp() { deflateEnd(ref _ztream); }
104
105 }
106}
diff --git a/contrib/dotzlib/DotZLib/DotZLib.cs b/contrib/dotzlib/DotZLib/DotZLib.cs
new file mode 100644
index 0000000..410deb0
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/DotZLib.cs
@@ -0,0 +1,288 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.IO;
10using System.Runtime.InteropServices;
11using System.Text;
12
13
14namespace DotZLib
15{
16
17 #region Internal types
18
19 /// <summary>
20 /// Defines constants for the various flush types used with zlib
21 /// </summary>
22 internal enum FlushTypes
23 {
24 None, Partial, Sync, Full, Finish, Block
25 }
26
27 #region ZStream structure
28 // internal mapping of the zlib zstream structure for marshalling
29 [StructLayoutAttribute(LayoutKind.Sequential, Pack=4, Size=0, CharSet=CharSet.Ansi)]
30 internal struct ZStream
31 {
32 public IntPtr next_in;
33 public uint avail_in;
34 public uint total_in;
35
36 public IntPtr next_out;
37 public uint avail_out;
38 public uint total_out;
39
40 [MarshalAs(UnmanagedType.LPStr)]
41 string msg;
42 uint state;
43
44 uint zalloc;
45 uint zfree;
46 uint opaque;
47
48 int data_type;
49 public uint adler;
50 uint reserved;
51 }
52
53 #endregion
54
55 #endregion
56
57 #region Public enums
58 /// <summary>
59 /// Defines constants for the available compression levels in zlib
60 /// </summary>
61 public enum CompressLevel : int
62 {
63 /// <summary>
64 /// The default compression level with a reasonable compromise between compression and speed
65 /// </summary>
66 Default = -1,
67 /// <summary>
68 /// No compression at all. The data are passed straight through.
69 /// </summary>
70 None = 0,
71 /// <summary>
72 /// The maximum compression rate available.
73 /// </summary>
74 Best = 9,
75 /// <summary>
76 /// The fastest available compression level.
77 /// </summary>
78 Fastest = 1
79 }
80 #endregion
81
82 #region Exception classes
83 /// <summary>
84 /// The exception that is thrown when an error occurs on the zlib dll
85 /// </summary>
86 public class ZLibException : ApplicationException
87 {
88 /// <summary>
89 /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
90 /// error message and error code
91 /// </summary>
92 /// <param name="errorCode">The zlib error code that caused the exception</param>
93 /// <param name="msg">A message that (hopefully) describes the error</param>
94 public ZLibException(int errorCode, string msg) : base(String.Format("ZLib error {0} {1}", errorCode, msg))
95 {
96 }
97
98 /// <summary>
99 /// Initializes a new instance of the <see cref="ZLibException"/> class with a specified
100 /// error code
101 /// </summary>
102 /// <param name="errorCode">The zlib error code that caused the exception</param>
103 public ZLibException(int errorCode) : base(String.Format("ZLib error {0}", errorCode))
104 {
105 }
106 }
107 #endregion
108
109 #region Interfaces
110
111 /// <summary>
112 /// Declares methods and properties that enables a running checksum to be calculated
113 /// </summary>
114 public interface ChecksumGenerator
115 {
116 /// <summary>
117 /// Gets the current value of the checksum
118 /// </summary>
119 uint Value { get; }
120
121 /// <summary>
122 /// Clears the current checksum to 0
123 /// </summary>
124 void Reset();
125
126 /// <summary>
127 /// Updates the current checksum with an array of bytes
128 /// </summary>
129 /// <param name="data">The data to update the checksum with</param>
130 void Update(byte[] data);
131
132 /// <summary>
133 /// Updates the current checksum with part of an array of bytes
134 /// </summary>
135 /// <param name="data">The data to update the checksum with</param>
136 /// <param name="offset">Where in <c>data</c> to start updating</param>
137 /// <param name="count">The number of bytes from <c>data</c> to use</param>
138 /// <exception cref="ArgumentException">The sum of offset and count is larger than the length of <c>data</c></exception>
139 /// <exception cref="ArgumentNullException"><c>data</c> is a null reference</exception>
140 /// <exception cref="ArgumentOutOfRangeException">Offset or count is negative.</exception>
141 void Update(byte[] data, int offset, int count);
142
143 /// <summary>
144 /// Updates the current checksum with the data from a string
145 /// </summary>
146 /// <param name="data">The string to update the checksum with</param>
147 /// <remarks>The characters in the string are converted by the UTF-8 encoding</remarks>
148 void Update(string data);
149
150 /// <summary>
151 /// Updates the current checksum with the data from a string, using a specific encoding
152 /// </summary>
153 /// <param name="data">The string to update the checksum with</param>
154 /// <param name="encoding">The encoding to use</param>
155 void Update(string data, Encoding encoding);
156 }
157
158
159 /// <summary>
160 /// Represents the method that will be called from a codec when new data
161 /// are available.
162 /// </summary>
163 /// <paramref name="data">The byte array containing the processed data</paramref>
164 /// <paramref name="startIndex">The index of the first processed byte in <c>data</c></paramref>
165 /// <paramref name="count">The number of processed bytes available</paramref>
166 /// <remarks>On return from this method, the data may be overwritten, so grab it while you can.
167 /// You cannot assume that startIndex will be zero.
168 /// </remarks>
169 public delegate void DataAvailableHandler(byte[] data, int startIndex, int count);
170
171 /// <summary>
172 /// Declares methods and events for implementing compressors/decompressors
173 /// </summary>
174 public interface Codec
175 {
176 /// <summary>
177 /// Occurs when more processed data are available.
178 /// </summary>
179 event DataAvailableHandler DataAvailable;
180
181 /// <summary>
182 /// Adds more data to the codec to be processed.
183 /// </summary>
184 /// <param name="data">Byte array containing the data to be added to the codec</param>
185 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
186 void Add(byte[] data);
187
188 /// <summary>
189 /// Adds more data to the codec to be processed.
190 /// </summary>
191 /// <param name="data">Byte array containing the data to be added to the codec</param>
192 /// <param name="offset">The index of the first byte to add from <c>data</c></param>
193 /// <param name="count">The number of bytes to add</param>
194 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
195 void Add(byte[] data, int offset, int count);
196
197 /// <summary>
198 /// Finishes up any pending data that needs to be processed and handled.
199 /// </summary>
200 void Finish();
201
202 /// <summary>
203 /// Gets the checksum of the data that has been added so far
204 /// </summary>
205 uint Checksum { get; }
206
207
208 }
209
210 #endregion
211
212 #region Classes
213 /// <summary>
214 /// Encapsulates general information about the ZLib library
215 /// </summary>
216 public class Info
217 {
218 #region DLL imports
219 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
220 private static extern uint zlibCompileFlags();
221
222 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
223 private static extern string zlibVersion();
224 #endregion
225
226 #region Private stuff
227 private uint _flags;
228
229 // helper function that unpacks a bitsize mask
230 private static int bitSize(uint bits)
231 {
232 switch (bits)
233 {
234 case 0: return 16;
235 case 1: return 32;
236 case 2: return 64;
237 }
238 return -1;
239 }
240 #endregion
241
242 /// <summary>
243 /// Constructs an instance of the <c>Info</c> class.
244 /// </summary>
245 public Info()
246 {
247 _flags = zlibCompileFlags();
248 }
249
250 /// <summary>
251 /// True if the library is compiled with debug info
252 /// </summary>
253 public bool HasDebugInfo { get { return 0 != (_flags & 0x100); } }
254
255 /// <summary>
256 /// True if the library is compiled with assembly optimizations
257 /// </summary>
258 public bool UsesAssemblyCode { get { return 0 != (_flags & 0x200); } }
259
260 /// <summary>
261 /// Gets the size of the unsigned int that was compiled into Zlib
262 /// </summary>
263 public int SizeOfUInt { get { return bitSize(_flags & 3); } }
264
265 /// <summary>
266 /// Gets the size of the unsigned long that was compiled into Zlib
267 /// </summary>
268 public int SizeOfULong { get { return bitSize((_flags >> 2) & 3); } }
269
270 /// <summary>
271 /// Gets the size of the pointers that were compiled into Zlib
272 /// </summary>
273 public int SizeOfPointer { get { return bitSize((_flags >> 4) & 3); } }
274
275 /// <summary>
276 /// Gets the size of the z_off_t type that was compiled into Zlib
277 /// </summary>
278 public int SizeOfOffset { get { return bitSize((_flags >> 6) & 3); } }
279
280 /// <summary>
281 /// Gets the version of ZLib as a string, e.g. "1.2.1"
282 /// </summary>
283 public static string Version { get { return zlibVersion(); } }
284 }
285
286 #endregion
287
288}
diff --git a/contrib/dotzlib/DotZLib/DotZLib.csproj b/contrib/dotzlib/DotZLib/DotZLib.csproj
new file mode 100644
index 0000000..71eeb85
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/DotZLib.csproj
@@ -0,0 +1,141 @@
1<VisualStudioProject>
2 <CSHARP
3 ProjectType = "Local"
4 ProductVersion = "7.10.3077"
5 SchemaVersion = "2.0"
6 ProjectGuid = "{BB1EE0B1-1808-46CB-B786-949D91117FC5}"
7 >
8 <Build>
9 <Settings
10 ApplicationIcon = ""
11 AssemblyKeyContainerName = ""
12 AssemblyName = "DotZLib"
13 AssemblyOriginatorKeyFile = ""
14 DefaultClientScript = "JScript"
15 DefaultHTMLPageLayout = "Grid"
16 DefaultTargetSchema = "IE50"
17 DelaySign = "false"
18 OutputType = "Library"
19 PreBuildEvent = ""
20 PostBuildEvent = ""
21 RootNamespace = "DotZLib"
22 RunPostBuildEvent = "OnBuildSuccess"
23 StartupObject = ""
24 >
25 <Config
26 Name = "Debug"
27 AllowUnsafeBlocks = "false"
28 BaseAddress = "285212672"
29 CheckForOverflowUnderflow = "false"
30 ConfigurationOverrideFile = ""
31 DefineConstants = "DEBUG;TRACE"
32 DocumentationFile = "docs\DotZLib.xml"
33 DebugSymbols = "true"
34 FileAlignment = "4096"
35 IncrementalBuild = "false"
36 NoStdLib = "false"
37 NoWarn = "1591"
38 Optimize = "false"
39 OutputPath = "bin\Debug\"
40 RegisterForComInterop = "false"
41 RemoveIntegerChecks = "false"
42 TreatWarningsAsErrors = "false"
43 WarningLevel = "4"
44 />
45 <Config
46 Name = "Release"
47 AllowUnsafeBlocks = "false"
48 BaseAddress = "285212672"
49 CheckForOverflowUnderflow = "false"
50 ConfigurationOverrideFile = ""
51 DefineConstants = "TRACE"
52 DocumentationFile = "docs\DotZLib.xml"
53 DebugSymbols = "false"
54 FileAlignment = "4096"
55 IncrementalBuild = "false"
56 NoStdLib = "false"
57 NoWarn = ""
58 Optimize = "true"
59 OutputPath = "bin\Release\"
60 RegisterForComInterop = "false"
61 RemoveIntegerChecks = "false"
62 TreatWarningsAsErrors = "false"
63 WarningLevel = "4"
64 />
65 </Settings>
66 <References>
67 <Reference
68 Name = "System"
69 AssemblyName = "System"
70 HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.dll"
71 />
72 <Reference
73 Name = "System.Data"
74 AssemblyName = "System.Data"
75 HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.Data.dll"
76 />
77 <Reference
78 Name = "System.XML"
79 AssemblyName = "System.Xml"
80 HintPath = "C:\WINNT\Microsoft.NET\Framework\v1.1.4322\System.XML.dll"
81 />
82 <Reference
83 Name = "nunit.framework"
84 AssemblyName = "nunit.framework"
85 HintPath = "E:\apps\NUnit V2.1\\bin\nunit.framework.dll"
86 AssemblyFolderKey = "hklm\dn\nunit.framework"
87 />
88 </References>
89 </Build>
90 <Files>
91 <Include>
92 <File
93 RelPath = "AssemblyInfo.cs"
94 SubType = "Code"
95 BuildAction = "Compile"
96 />
97 <File
98 RelPath = "ChecksumImpl.cs"
99 SubType = "Code"
100 BuildAction = "Compile"
101 />
102 <File
103 RelPath = "CircularBuffer.cs"
104 SubType = "Code"
105 BuildAction = "Compile"
106 />
107 <File
108 RelPath = "CodecBase.cs"
109 SubType = "Code"
110 BuildAction = "Compile"
111 />
112 <File
113 RelPath = "Deflater.cs"
114 SubType = "Code"
115 BuildAction = "Compile"
116 />
117 <File
118 RelPath = "DotZLib.cs"
119 SubType = "Code"
120 BuildAction = "Compile"
121 />
122 <File
123 RelPath = "GZipStream.cs"
124 SubType = "Code"
125 BuildAction = "Compile"
126 />
127 <File
128 RelPath = "Inflater.cs"
129 SubType = "Code"
130 BuildAction = "Compile"
131 />
132 <File
133 RelPath = "UnitTests.cs"
134 SubType = "Code"
135 BuildAction = "Compile"
136 />
137 </Include>
138 </Files>
139 </CSHARP>
140</VisualStudioProject>
141
diff --git a/contrib/dotzlib/DotZLib/GZipStream.cs b/contrib/dotzlib/DotZLib/GZipStream.cs
new file mode 100644
index 0000000..f861675
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/GZipStream.cs
@@ -0,0 +1,301 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.IO;
10using System.Runtime.InteropServices;
11
12namespace DotZLib
13{
14 /// <summary>
15 /// Implements a compressed <see cref="Stream"/>, in GZip (.gz) format.
16 /// </summary>
17 public class GZipStream : Stream, IDisposable
18 {
19 #region Dll Imports
20 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
21 private static extern IntPtr gzopen(string name, string mode);
22
23 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
24 private static extern int gzclose(IntPtr gzFile);
25
26 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
27 private static extern int gzwrite(IntPtr gzFile, int data, int length);
28
29 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
30 private static extern int gzread(IntPtr gzFile, int data, int length);
31
32 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
33 private static extern int gzgetc(IntPtr gzFile);
34
35 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
36 private static extern int gzputc(IntPtr gzFile, int c);
37
38 #endregion
39
40 #region Private data
41 private IntPtr _gzFile;
42 private bool _isDisposed = false;
43 private bool _isWriting;
44 #endregion
45
46 #region Constructors
47 /// <summary>
48 /// Creates a new file as a writeable GZipStream
49 /// </summary>
50 /// <param name="fileName">The name of the compressed file to create</param>
51 /// <param name="level">The compression level to use when adding data</param>
52 /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
53 public GZipStream(string fileName, CompressLevel level)
54 {
55 _isWriting = true;
56 _gzFile = gzopen(fileName, String.Format("wb{0}", (int)level));
57 if (_gzFile == IntPtr.Zero)
58 throw new ZLibException(-1, "Could not open " + fileName);
59 }
60
61 /// <summary>
62 /// Opens an existing file as a readable GZipStream
63 /// </summary>
64 /// <param name="fileName">The name of the file to open</param>
65 /// <exception cref="ZLibException">If an error occurred in the internal zlib function</exception>
66 public GZipStream(string fileName)
67 {
68 _isWriting = false;
69 _gzFile = gzopen(fileName, "rb");
70 if (_gzFile == IntPtr.Zero)
71 throw new ZLibException(-1, "Could not open " + fileName);
72
73 }
74 #endregion
75
76 #region Access properties
77 /// <summary>
78 /// Returns true of this stream can be read from, false otherwise
79 /// </summary>
80 public override bool CanRead
81 {
82 get
83 {
84 return !_isWriting;
85 }
86 }
87
88
89 /// <summary>
90 /// Returns false.
91 /// </summary>
92 public override bool CanSeek
93 {
94 get
95 {
96 return false;
97 }
98 }
99
100 /// <summary>
101 /// Returns true if this tsream is writeable, false otherwise
102 /// </summary>
103 public override bool CanWrite
104 {
105 get
106 {
107 return _isWriting;
108 }
109 }
110 #endregion
111
112 #region Destructor & IDispose stuff
113
114 /// <summary>
115 /// Destroys this instance
116 /// </summary>
117 ~GZipStream()
118 {
119 cleanUp(false);
120 }
121
122 /// <summary>
123 /// Closes the external file handle
124 /// </summary>
125 public void Dispose()
126 {
127 cleanUp(true);
128 }
129
130 // Does the actual closing of the file handle.
131 private void cleanUp(bool isDisposing)
132 {
133 if (!_isDisposed)
134 {
135 gzclose(_gzFile);
136 _isDisposed = true;
137 }
138 }
139 #endregion
140
141 #region Basic reading and writing
142 /// <summary>
143 /// Attempts to read a number of bytes from the stream.
144 /// </summary>
145 /// <param name="buffer">The destination data buffer</param>
146 /// <param name="offset">The index of the first destination byte in <c>buffer</c></param>
147 /// <param name="count">The number of bytes requested</param>
148 /// <returns>The number of bytes read</returns>
149 /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
150 /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
151 /// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is &gt; buffer.Length</exception>
152 /// <exception cref="NotSupportedException">If this stream is not readable.</exception>
153 /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
154 public override int Read(byte[] buffer, int offset, int count)
155 {
156 if (!CanRead) throw new NotSupportedException();
157 if (buffer == null) throw new ArgumentNullException();
158 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
159 if ((offset+count) > buffer.Length) throw new ArgumentException();
160 if (_isDisposed) throw new ObjectDisposedException("GZipStream");
161
162 GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
163 int result;
164 try
165 {
166 result = gzread(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
167 if (result < 0)
168 throw new IOException();
169 }
170 finally
171 {
172 h.Free();
173 }
174 return result;
175 }
176
177 /// <summary>
178 /// Attempts to read a single byte from the stream.
179 /// </summary>
180 /// <returns>The byte that was read, or -1 in case of error or End-Of-File</returns>
181 public override int ReadByte()
182 {
183 if (!CanRead) throw new NotSupportedException();
184 if (_isDisposed) throw new ObjectDisposedException("GZipStream");
185 return gzgetc(_gzFile);
186 }
187
188 /// <summary>
189 /// Writes a number of bytes to the stream
190 /// </summary>
191 /// <param name="buffer"></param>
192 /// <param name="offset"></param>
193 /// <param name="count"></param>
194 /// <exception cref="ArgumentNullException">If <c>buffer</c> is null</exception>
195 /// <exception cref="ArgumentOutOfRangeException">If <c>count</c> or <c>offset</c> are negative</exception>
196 /// <exception cref="ArgumentException">If <c>offset</c> + <c>count</c> is &gt; buffer.Length</exception>
197 /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
198 /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
199 public override void Write(byte[] buffer, int offset, int count)
200 {
201 if (!CanWrite) throw new NotSupportedException();
202 if (buffer == null) throw new ArgumentNullException();
203 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
204 if ((offset+count) > buffer.Length) throw new ArgumentException();
205 if (_isDisposed) throw new ObjectDisposedException("GZipStream");
206
207 GCHandle h = GCHandle.Alloc(buffer, GCHandleType.Pinned);
208 try
209 {
210 int result = gzwrite(_gzFile, h.AddrOfPinnedObject().ToInt32() + offset, count);
211 if (result < 0)
212 throw new IOException();
213 }
214 finally
215 {
216 h.Free();
217 }
218 }
219
220 /// <summary>
221 /// Writes a single byte to the stream
222 /// </summary>
223 /// <param name="value">The byte to add to the stream.</param>
224 /// <exception cref="NotSupportedException">If this stream is not writeable.</exception>
225 /// <exception cref="ObjectDisposedException">If this stream has been disposed.</exception>
226 public override void WriteByte(byte value)
227 {
228 if (!CanWrite) throw new NotSupportedException();
229 if (_isDisposed) throw new ObjectDisposedException("GZipStream");
230
231 int result = gzputc(_gzFile, (int)value);
232 if (result < 0)
233 throw new IOException();
234 }
235 #endregion
236
237 #region Position & length stuff
238 /// <summary>
239 /// Not supported.
240 /// </summary>
241 /// <param name="value"></param>
242 /// <exception cref="NotSupportedException">Always thrown</exception>
243 public override void SetLength(long value)
244 {
245 throw new NotSupportedException();
246 }
247
248 /// <summary>
249 /// Not suppported.
250 /// </summary>
251 /// <param name="offset"></param>
252 /// <param name="origin"></param>
253 /// <returns></returns>
254 /// <exception cref="NotSupportedException">Always thrown</exception>
255 public override long Seek(long offset, SeekOrigin origin)
256 {
257 throw new NotSupportedException();
258 }
259
260 /// <summary>
261 /// Flushes the <c>GZipStream</c>.
262 /// </summary>
263 /// <remarks>In this implementation, this method does nothing. This is because excessive
264 /// flushing may degrade the achievable compression rates.</remarks>
265 public override void Flush()
266 {
267 // left empty on purpose
268 }
269
270 /// <summary>
271 /// Gets/sets the current position in the <c>GZipStream</c>. Not suppported.
272 /// </summary>
273 /// <remarks>In this implementation this property is not supported</remarks>
274 /// <exception cref="NotSupportedException">Always thrown</exception>
275 public override long Position
276 {
277 get
278 {
279 throw new NotSupportedException();
280 }
281 set
282 {
283 throw new NotSupportedException();
284 }
285 }
286
287 /// <summary>
288 /// Gets the size of the stream. Not suppported.
289 /// </summary>
290 /// <remarks>In this implementation this property is not supported</remarks>
291 /// <exception cref="NotSupportedException">Always thrown</exception>
292 public override long Length
293 {
294 get
295 {
296 throw new NotSupportedException();
297 }
298 }
299 #endregion
300 }
301}
diff --git a/contrib/dotzlib/DotZLib/Inflater.cs b/contrib/dotzlib/DotZLib/Inflater.cs
new file mode 100644
index 0000000..4e60cda
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/Inflater.cs
@@ -0,0 +1,105 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Diagnostics;
10using System.Runtime.InteropServices;
11
12namespace DotZLib
13{
14
15 /// <summary>
16 /// Implements a data decompressor, using the inflate algorithm in the ZLib dll
17 /// </summary>
18 public class Inflater : CodecBase
19 {
20 #region Dll imports
21 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Ansi)]
22 private static extern int inflateInit_(ref ZStream sz, string vs, int size);
23
24 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
25 private static extern int inflate(ref ZStream sz, int flush);
26
27 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
28 private static extern int inflateReset(ref ZStream sz);
29
30 [DllImport("ZLIB1.dll", CallingConvention=CallingConvention.Cdecl)]
31 private static extern int inflateEnd(ref ZStream sz);
32 #endregion
33
34 /// <summary>
35 /// Constructs an new instance of the <c>Inflater</c>
36 /// </summary>
37 public Inflater() : base()
38 {
39 int retval = inflateInit_(ref _ztream, Info.Version, Marshal.SizeOf(_ztream));
40 if (retval != 0)
41 throw new ZLibException(retval, "Could not initialize inflater");
42
43 resetOutput();
44 }
45
46
47 /// <summary>
48 /// Adds more data to the codec to be processed.
49 /// </summary>
50 /// <param name="data">Byte array containing the data to be added to the codec</param>
51 /// <param name="offset">The index of the first byte to add from <c>data</c></param>
52 /// <param name="count">The number of bytes to add</param>
53 /// <remarks>Adding data may, or may not, raise the <c>DataAvailable</c> event</remarks>
54 public override void Add(byte[] data, int offset, int count)
55 {
56 if (data == null) throw new ArgumentNullException();
57 if (offset < 0 || count < 0) throw new ArgumentOutOfRangeException();
58 if ((offset+count) > data.Length) throw new ArgumentException();
59
60 int total = count;
61 int inputIndex = offset;
62 int err = 0;
63
64 while (err >= 0 && inputIndex < total)
65 {
66 copyInput(data, inputIndex, Math.Min(total - inputIndex, kBufferSize));
67 err = inflate(ref _ztream, (int)FlushTypes.None);
68 if (err == 0)
69 while (_ztream.avail_out == 0)
70 {
71 OnDataAvailable();
72 err = inflate(ref _ztream, (int)FlushTypes.None);
73 }
74
75 inputIndex += (int)_ztream.total_in;
76 }
77 setChecksum( _ztream.adler );
78 }
79
80
81 /// <summary>
82 /// Finishes up any pending data that needs to be processed and handled.
83 /// </summary>
84 public override void Finish()
85 {
86 int err;
87 do
88 {
89 err = inflate(ref _ztream, (int)FlushTypes.Finish);
90 OnDataAvailable();
91 }
92 while (err == 0);
93 setChecksum( _ztream.adler );
94 inflateReset(ref _ztream);
95 resetOutput();
96 }
97
98 /// <summary>
99 /// Closes the internal zlib inflate stream
100 /// </summary>
101 protected override void CleanUp() { inflateEnd(ref _ztream); }
102
103
104 }
105}
diff --git a/contrib/dotzlib/DotZLib/UnitTests.cs b/contrib/dotzlib/DotZLib/UnitTests.cs
new file mode 100644
index 0000000..2f374b6
--- /dev/null
+++ b/contrib/dotzlib/DotZLib/UnitTests.cs
@@ -0,0 +1,274 @@
1//
2// © Copyright Henrik Ravn 2004
3//
4// Use, modification and distribution are subject to the Boost Software License, Version 1.0.
5// (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6//
7
8using System;
9using System.Collections;
10using System.IO;
11
12// uncomment the define below to include unit tests
13//#define nunit
14#if nunit
15using NUnit.Framework;
16
17// Unit tests for the DotZLib class library
18// ----------------------------------------
19//
20// Use this with NUnit 2 from http://www.nunit.org
21//
22
23namespace DotZLibTests
24{
25 using DotZLib;
26
27 // helper methods
28 internal class Utils
29 {
30 public static bool byteArrEqual( byte[] lhs, byte[] rhs )
31 {
32 if (lhs.Length != rhs.Length)
33 return false;
34 for (int i = lhs.Length-1; i >= 0; --i)
35 if (lhs[i] != rhs[i])
36 return false;
37 return true;
38 }
39
40 }
41
42
43 [TestFixture]
44 public class CircBufferTests
45 {
46 #region Circular buffer tests
47 [Test]
48 public void SinglePutGet()
49 {
50 CircularBuffer buf = new CircularBuffer(10);
51 Assert.AreEqual( 0, buf.Size );
52 Assert.AreEqual( -1, buf.Get() );
53
54 Assert.IsTrue(buf.Put( 1 ));
55 Assert.AreEqual( 1, buf.Size );
56 Assert.AreEqual( 1, buf.Get() );
57 Assert.AreEqual( 0, buf.Size );
58 Assert.AreEqual( -1, buf.Get() );
59 }
60
61 [Test]
62 public void BlockPutGet()
63 {
64 CircularBuffer buf = new CircularBuffer(10);
65 byte[] arr = {1,2,3,4,5,6,7,8,9,10};
66 Assert.AreEqual( 10, buf.Put(arr,0,10) );
67 Assert.AreEqual( 10, buf.Size );
68 Assert.IsFalse( buf.Put(11) );
69 Assert.AreEqual( 1, buf.Get() );
70 Assert.IsTrue( buf.Put(11) );
71
72 byte[] arr2 = (byte[])arr.Clone();
73 Assert.AreEqual( 9, buf.Get(arr2,1,9) );
74 Assert.IsTrue( Utils.byteArrEqual(arr,arr2) );
75 }
76
77 #endregion
78 }
79
80 [TestFixture]
81 public class ChecksumTests
82 {
83 #region CRC32 Tests
84 [Test]
85 public void CRC32_Null()
86 {
87 CRC32Checksum crc32 = new CRC32Checksum();
88 Assert.AreEqual( 0, crc32.Value );
89
90 crc32 = new CRC32Checksum(1);
91 Assert.AreEqual( 1, crc32.Value );
92
93 crc32 = new CRC32Checksum(556);
94 Assert.AreEqual( 556, crc32.Value );
95 }
96
97 [Test]
98 public void CRC32_Data()
99 {
100 CRC32Checksum crc32 = new CRC32Checksum();
101 byte[] data = { 1,2,3,4,5,6,7 };
102 crc32.Update(data);
103 Assert.AreEqual( 0x70e46888, crc32.Value );
104
105 crc32 = new CRC32Checksum();
106 crc32.Update("penguin");
107 Assert.AreEqual( 0x0e5c1a120, crc32.Value );
108
109 crc32 = new CRC32Checksum(1);
110 crc32.Update("penguin");
111 Assert.AreEqual(0x43b6aa94, crc32.Value);
112
113 }
114 #endregion
115
116 #region Adler tests
117
118 [Test]
119 public void Adler_Null()
120 {
121 AdlerChecksum adler = new AdlerChecksum();
122 Assert.AreEqual(0, adler.Value);
123
124 adler = new AdlerChecksum(1);
125 Assert.AreEqual( 1, adler.Value );
126
127 adler = new AdlerChecksum(556);
128 Assert.AreEqual( 556, adler.Value );
129 }
130
131 [Test]
132 public void Adler_Data()
133 {
134 AdlerChecksum adler = new AdlerChecksum(1);
135 byte[] data = { 1,2,3,4,5,6,7 };
136 adler.Update(data);
137 Assert.AreEqual( 0x5b001d, adler.Value );
138
139 adler = new AdlerChecksum();
140 adler.Update("penguin");
141 Assert.AreEqual(0x0bcf02f6, adler.Value );
142
143 adler = new AdlerChecksum(1);
144 adler.Update("penguin");
145 Assert.AreEqual(0x0bd602f7, adler.Value);
146
147 }
148 #endregion
149 }
150
151 [TestFixture]
152 public class InfoTests
153 {
154 #region Info tests
155 [Test]
156 public void Info_Version()
157 {
158 Info info = new Info();
159 Assert.AreEqual("1.2.2", Info.Version);
160 Assert.AreEqual(32, info.SizeOfUInt);
161 Assert.AreEqual(32, info.SizeOfULong);
162 Assert.AreEqual(32, info.SizeOfPointer);
163 Assert.AreEqual(32, info.SizeOfOffset);
164 }
165 #endregion
166 }
167
168 [TestFixture]
169 public class DeflateInflateTests
170 {
171 #region Deflate tests
172 [Test]
173 public void Deflate_Init()
174 {
175 using (Deflater def = new Deflater(CompressLevel.Default))
176 {
177 }
178 }
179
180 private ArrayList compressedData = new ArrayList();
181 private uint adler1;
182
183 private ArrayList uncompressedData = new ArrayList();
184 private uint adler2;
185
186 public void CDataAvail(byte[] data, int startIndex, int count)
187 {
188 for (int i = 0; i < count; ++i)
189 compressedData.Add(data[i+startIndex]);
190 }
191
192 [Test]
193 public void Deflate_Compress()
194 {
195 compressedData.Clear();
196
197 byte[] testData = new byte[35000];
198 for (int i = 0; i < testData.Length; ++i)
199 testData[i] = 5;
200
201 using (Deflater def = new Deflater((CompressLevel)5))
202 {
203 def.DataAvailable += new DataAvailableHandler(CDataAvail);
204 def.Add(testData);
205 def.Finish();
206 adler1 = def.Checksum;
207 }
208 }
209 #endregion
210
211 #region Inflate tests
212 [Test]
213 public void Inflate_Init()
214 {
215 using (Inflater inf = new Inflater())
216 {
217 }
218 }
219
220 private void DDataAvail(byte[] data, int startIndex, int count)
221 {
222 for (int i = 0; i < count; ++i)
223 uncompressedData.Add(data[i+startIndex]);
224 }
225
226 [Test]
227 public void Inflate_Expand()
228 {
229 uncompressedData.Clear();
230
231 using (Inflater inf = new Inflater())
232 {
233 inf.DataAvailable += new DataAvailableHandler(DDataAvail);
234 inf.Add((byte[])compressedData.ToArray(typeof(byte)));
235 inf.Finish();
236 adler2 = inf.Checksum;
237 }
238 Assert.AreEqual( adler1, adler2 );
239 }
240 #endregion
241 }
242
243 [TestFixture]
244 public class GZipStreamTests
245 {
246 #region GZipStream test
247 [Test]
248 public void GZipStream_WriteRead()
249 {
250 using (GZipStream gzOut = new GZipStream("gzstream.gz", CompressLevel.Best))
251 {
252 BinaryWriter writer = new BinaryWriter(gzOut);
253 writer.Write("hi there");
254 writer.Write(Math.PI);
255 writer.Write(42);
256 }
257
258 using (GZipStream gzIn = new GZipStream("gzstream.gz"))
259 {
260 BinaryReader reader = new BinaryReader(gzIn);
261 string s = reader.ReadString();
262 Assert.AreEqual("hi there",s);
263 double d = reader.ReadDouble();
264 Assert.AreEqual(Math.PI, d);
265 int i = reader.ReadInt32();
266 Assert.AreEqual(42,i);
267 }
268
269 }
270 #endregion
271 }
272}
273
274#endif \ No newline at end of file
diff --git a/contrib/dotzlib/LICENSE_1_0.txt b/contrib/dotzlib/LICENSE_1_0.txt
new file mode 100644
index 0000000..30aac2c
--- /dev/null
+++ b/contrib/dotzlib/LICENSE_1_0.txt
@@ -0,0 +1,23 @@
1Boost Software License - Version 1.0 - August 17th, 2003
2
3Permission is hereby granted, free of charge, to any person or organization
4obtaining a copy of the software and accompanying documentation covered by
5this license (the "Software") to use, reproduce, display, distribute,
6execute, and transmit the Software, and to prepare derivative works of the
7Software, and to permit third-parties to whom the Software is furnished to
8do so, all subject to the following:
9
10The copyright notices in the Software and this entire statement, including
11the above license grant, this restriction and the following disclaimer,
12must be included in all copies of the Software, in whole or in part, and
13all derivative works of the Software, unless such copies or derivative
14works are solely in the form of machine-executable object code generated by
15a source language processor.
16
17THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
20SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
21FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
22ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
23DEALINGS IN THE SOFTWARE. \ No newline at end of file
diff --git a/contrib/dotzlib/readme.txt b/contrib/dotzlib/readme.txt
new file mode 100644
index 0000000..210f4b0
--- /dev/null
+++ b/contrib/dotzlib/readme.txt
@@ -0,0 +1,58 @@
1This directory contains a .Net wrapper class library for the ZLib1.dll
2
3The wrapper includes support for inflating/deflating memory buffers,
4.Net streaming wrappers for the gz streams part of zlib, and wrappers
5for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples.
6
7Directory structure:
8--------------------
9
10LICENSE_1_0.txt - License file.
11readme.txt - This file.
12DotZLib.chm - Class library documentation
13DotZLib.build - NAnt build file
14DotZLib.sln - Microsoft Visual Studio 2003 solution file
15
16DotZLib\*.cs - Source files for the class library
17
18Unit tests:
19-----------
20The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher.
21To include unit tests in the build, define nunit before building.
22
23
24Build instructions:
25-------------------
26
271. Using Visual Studio.Net 2003:
28 Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll)
29 will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on
30 you are building the release or debug version of the library. Check
31 DotZLib/UnitTests.cs for instructions on how to include unit tests in the
32 build.
33
342. Using NAnt:
35 Open a command prompt with access to the build environment and run nant
36 in the same directory as the DotZLib.build file.
37 You can define 2 properties on the nant command-line to control the build:
38 debug={true|false} to toggle between release/debug builds (default=true).
39 nunit={true|false} to include or esclude unit tests (default=true).
40 Also the target clean will remove binaries.
41 Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release
42 or ./DotZLib/bin/debug, depending on whether you are building the release
43 or debug version of the library.
44
45 Examples:
46 nant -D:debug=false -D:nunit=false
47 will build a release mode version of the library without unit tests.
48 nant
49 will build a debug version of the library with unit tests
50 nant clean
51 will remove all previously built files.
52
53
54---------------------------------
55Copyright (c) Henrik Ravn 2004
56
57Use, modification and distribution are subject to the Boost Software License, Version 1.0.
58(See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-12-24 22:46:16 +0000