1 using System; |
|
2 using System.IO; |
|
3 namespace SevenZip |
|
4 { |
|
5 using CommandLineParser; |
|
6 |
|
7 public class CDoubleStream: Stream |
|
8 { |
|
9 public System.IO.Stream s1; |
|
10 public System.IO.Stream s2; |
|
11 public int fileIndex; |
|
12 public long skipSize; |
|
13 |
|
14 public override bool CanRead { get { return true; }} |
|
15 public override bool CanWrite { get { return false; }} |
|
16 public override bool CanSeek { get { return false; }} |
|
17 public override long Length { get { return s1.Length + s2.Length - skipSize; } } |
|
18 public override long Position |
|
19 { |
|
20 get { return 0; } |
|
21 set { } |
|
22 } |
|
23 public override void Flush() { } |
|
24 public override int Read(byte[] buffer, int offset, int count) |
|
25 { |
|
26 int numTotal = 0; |
|
27 while (count > 0) |
|
28 { |
|
29 if (fileIndex == 0) |
|
30 { |
|
31 int num = s1.Read(buffer, offset, count); |
|
32 offset += num; |
|
33 count -= num; |
|
34 numTotal += num; |
|
35 if (num == 0) |
|
36 fileIndex++; |
|
37 } |
|
38 if (fileIndex == 1) |
|
39 { |
|
40 numTotal += s2.Read(buffer, offset, count); |
|
41 return numTotal; |
|
42 } |
|
43 } |
|
44 return numTotal; |
|
45 } |
|
46 public override void Write(byte[] buffer, int offset, int count) |
|
47 { |
|
48 throw (new Exception("can't Write")); |
|
49 } |
|
50 public override long Seek(long offset, System.IO.SeekOrigin origin) |
|
51 { |
|
52 throw (new Exception("can't Seek")); |
|
53 } |
|
54 public override void SetLength(long value) |
|
55 { |
|
56 throw (new Exception("can't SetLength")); |
|
57 } |
|
58 } |
|
59 |
|
60 class LzmaAlone |
|
61 { |
|
62 enum Key |
|
63 { |
|
64 Help1 = 0, |
|
65 Help2, |
|
66 Mode, |
|
67 Dictionary, |
|
68 FastBytes, |
|
69 LitContext, |
|
70 LitPos, |
|
71 PosBits, |
|
72 MatchFinder, |
|
73 EOS, |
|
74 StdIn, |
|
75 StdOut, |
|
76 Train |
|
77 }; |
|
78 |
|
79 static void PrintHelp() |
|
80 { |
|
81 System.Console.WriteLine("\nUsage: LZMA <e|d> [<switches>...] inputFile outputFile\n" + |
|
82 " e: encode file\n" + |
|
83 " d: decode file\n" + |
|
84 " b: Benchmark\n" + |
|
85 "<Switches>\n" + |
|
86 // " -a{N}: set compression mode - [0, 1], default: 1 (max)\n" + |
|
87 " -d{N}: set dictionary - [0, 29], default: 23 (8MB)\n" + |
|
88 " -fb{N}: set number of fast bytes - [5, 273], default: 128\n" + |
|
89 " -lc{N}: set number of literal context bits - [0, 8], default: 3\n" + |
|
90 " -lp{N}: set number of literal pos bits - [0, 4], default: 0\n" + |
|
91 " -pb{N}: set number of pos bits - [0, 4], default: 2\n" + |
|
92 " -mf{MF_ID}: set Match Finder: [bt2, bt4], default: bt4\n" + |
|
93 " -eos: write End Of Stream marker\n" |
|
94 // + " -si: read data from stdin\n" |
|
95 // + " -so: write data to stdout\n" |
|
96 ); |
|
97 } |
|
98 |
|
99 static bool GetNumber(string s, out Int32 v) |
|
100 { |
|
101 v = 0; |
|
102 for (int i = 0; i < s.Length; i++) |
|
103 { |
|
104 char c = s[i]; |
|
105 if (c < '0' || c > '9') |
|
106 return false; |
|
107 v *= 10; |
|
108 v += (Int32)(c - '0'); |
|
109 } |
|
110 return true; |
|
111 } |
|
112 |
|
113 static int IncorrectCommand() |
|
114 { |
|
115 throw (new Exception("Command line error")); |
|
116 // System.Console.WriteLine("\nCommand line error\n"); |
|
117 // return 1; |
|
118 } |
|
119 static int Main2(string[] args) |
|
120 { |
|
121 System.Console.WriteLine("\nLZMA# 4.49 Copyright (c) 1999-2007 Igor Pavlov 2006-07-05\n"); |
|
122 |
|
123 if (args.Length == 0) |
|
124 { |
|
125 PrintHelp(); |
|
126 return 0; |
|
127 } |
|
128 |
|
129 SwitchForm[] kSwitchForms = new SwitchForm[13]; |
|
130 int sw = 0; |
|
131 kSwitchForms[sw++] = new SwitchForm("?", SwitchType.Simple, false); |
|
132 kSwitchForms[sw++] = new SwitchForm("H", SwitchType.Simple, false); |
|
133 kSwitchForms[sw++] = new SwitchForm("A", SwitchType.UnLimitedPostString, false, 1); |
|
134 kSwitchForms[sw++] = new SwitchForm("D", SwitchType.UnLimitedPostString, false, 1); |
|
135 kSwitchForms[sw++] = new SwitchForm("FB", SwitchType.UnLimitedPostString, false, 1); |
|
136 kSwitchForms[sw++] = new SwitchForm("LC", SwitchType.UnLimitedPostString, false, 1); |
|
137 kSwitchForms[sw++] = new SwitchForm("LP", SwitchType.UnLimitedPostString, false, 1); |
|
138 kSwitchForms[sw++] = new SwitchForm("PB", SwitchType.UnLimitedPostString, false, 1); |
|
139 kSwitchForms[sw++] = new SwitchForm("MF", SwitchType.UnLimitedPostString, false, 1); |
|
140 kSwitchForms[sw++] = new SwitchForm("EOS", SwitchType.Simple, false); |
|
141 kSwitchForms[sw++] = new SwitchForm("SI", SwitchType.Simple, false); |
|
142 kSwitchForms[sw++] = new SwitchForm("SO", SwitchType.Simple, false); |
|
143 kSwitchForms[sw++] = new SwitchForm("T", SwitchType.UnLimitedPostString, false, 1); |
|
144 |
|
145 |
|
146 Parser parser = new Parser(sw); |
|
147 try |
|
148 { |
|
149 parser.ParseStrings(kSwitchForms, args); |
|
150 } |
|
151 catch |
|
152 { |
|
153 return IncorrectCommand(); |
|
154 } |
|
155 |
|
156 if (parser[(int)Key.Help1].ThereIs || parser[(int)Key.Help2].ThereIs) |
|
157 { |
|
158 PrintHelp(); |
|
159 return 0; |
|
160 } |
|
161 |
|
162 System.Collections.ArrayList nonSwitchStrings = parser.NonSwitchStrings; |
|
163 |
|
164 int paramIndex = 0; |
|
165 if (paramIndex >= nonSwitchStrings.Count) |
|
166 return IncorrectCommand(); |
|
167 string command = (string)nonSwitchStrings[paramIndex++]; |
|
168 command = command.ToLower(); |
|
169 |
|
170 bool dictionaryIsDefined = false; |
|
171 Int32 dictionary = 1 << 21; |
|
172 if (parser[(int)Key.Dictionary].ThereIs) |
|
173 { |
|
174 Int32 dicLog; |
|
175 if (!GetNumber((string)parser[(int)Key.Dictionary].PostStrings[0], out dicLog)) |
|
176 IncorrectCommand(); |
|
177 dictionary = (Int32)1 << dicLog; |
|
178 dictionaryIsDefined = true; |
|
179 } |
|
180 string mf = "bt4"; |
|
181 if (parser[(int)Key.MatchFinder].ThereIs) |
|
182 mf = (string)parser[(int)Key.MatchFinder].PostStrings[0]; |
|
183 mf = mf.ToLower(); |
|
184 |
|
185 if (command == "b") |
|
186 { |
|
187 const Int32 kNumDefaultItereations = 10; |
|
188 Int32 numIterations = kNumDefaultItereations; |
|
189 if (paramIndex < nonSwitchStrings.Count) |
|
190 if (!GetNumber((string)nonSwitchStrings[paramIndex++], out numIterations)) |
|
191 numIterations = kNumDefaultItereations; |
|
192 return LzmaBench.LzmaBenchmark(numIterations, (UInt32)dictionary); |
|
193 } |
|
194 |
|
195 string train = ""; |
|
196 if (parser[(int)Key.Train].ThereIs) |
|
197 train = (string)parser[(int)Key.Train].PostStrings[0]; |
|
198 |
|
199 bool encodeMode = false; |
|
200 if (command == "e") |
|
201 encodeMode = true; |
|
202 else if (command == "d") |
|
203 encodeMode = false; |
|
204 else |
|
205 IncorrectCommand(); |
|
206 |
|
207 bool stdInMode = parser[(int)Key.StdIn].ThereIs; |
|
208 bool stdOutMode = parser[(int)Key.StdOut].ThereIs; |
|
209 |
|
210 Stream inStream = null; |
|
211 if (stdInMode) |
|
212 { |
|
213 throw (new Exception("Not implemeted")); |
|
214 } |
|
215 else |
|
216 { |
|
217 if (paramIndex >= nonSwitchStrings.Count) |
|
218 IncorrectCommand(); |
|
219 string inputName = (string)nonSwitchStrings[paramIndex++]; |
|
220 inStream = new FileStream(inputName, FileMode.Open, FileAccess.Read); |
|
221 } |
|
222 |
|
223 FileStream outStream = null; |
|
224 if (stdOutMode) |
|
225 { |
|
226 throw (new Exception("Not implemeted")); |
|
227 } |
|
228 else |
|
229 { |
|
230 if (paramIndex >= nonSwitchStrings.Count) |
|
231 IncorrectCommand(); |
|
232 string outputName = (string)nonSwitchStrings[paramIndex++]; |
|
233 outStream = new FileStream(outputName, FileMode.Create, FileAccess.Write); |
|
234 } |
|
235 |
|
236 FileStream trainStream = null; |
|
237 if (train.Length != 0) |
|
238 trainStream = new FileStream(train, FileMode.Open, FileAccess.Read); |
|
239 |
|
240 if (encodeMode) |
|
241 { |
|
242 if (!dictionaryIsDefined) |
|
243 dictionary = 1 << 23; |
|
244 |
|
245 Int32 posStateBits = 2; |
|
246 Int32 litContextBits = 3; // for normal files |
|
247 // UInt32 litContextBits = 0; // for 32-bit data |
|
248 Int32 litPosBits = 0; |
|
249 // UInt32 litPosBits = 2; // for 32-bit data |
|
250 Int32 algorithm = 2; |
|
251 Int32 numFastBytes = 128; |
|
252 |
|
253 bool eos = parser[(int)Key.EOS].ThereIs || stdInMode; |
|
254 |
|
255 if (parser[(int)Key.Mode].ThereIs) |
|
256 if (!GetNumber((string)parser[(int)Key.Mode].PostStrings[0], out algorithm)) |
|
257 IncorrectCommand(); |
|
258 |
|
259 if (parser[(int)Key.FastBytes].ThereIs) |
|
260 if (!GetNumber((string)parser[(int)Key.FastBytes].PostStrings[0], out numFastBytes)) |
|
261 IncorrectCommand(); |
|
262 if (parser[(int)Key.LitContext].ThereIs) |
|
263 if (!GetNumber((string)parser[(int)Key.LitContext].PostStrings[0], out litContextBits)) |
|
264 IncorrectCommand(); |
|
265 if (parser[(int)Key.LitPos].ThereIs) |
|
266 if (!GetNumber((string)parser[(int)Key.LitPos].PostStrings[0], out litPosBits)) |
|
267 IncorrectCommand(); |
|
268 if (parser[(int)Key.PosBits].ThereIs) |
|
269 if (!GetNumber((string)parser[(int)Key.PosBits].PostStrings[0], out posStateBits)) |
|
270 IncorrectCommand(); |
|
271 |
|
272 CoderPropID[] propIDs = |
|
273 { |
|
274 CoderPropID.DictionarySize, |
|
275 CoderPropID.PosStateBits, |
|
276 CoderPropID.LitContextBits, |
|
277 CoderPropID.LitPosBits, |
|
278 CoderPropID.Algorithm, |
|
279 CoderPropID.NumFastBytes, |
|
280 CoderPropID.MatchFinder, |
|
281 CoderPropID.EndMarker |
|
282 }; |
|
283 object[] properties = |
|
284 { |
|
285 (Int32)(dictionary), |
|
286 (Int32)(posStateBits), |
|
287 (Int32)(litContextBits), |
|
288 (Int32)(litPosBits), |
|
289 (Int32)(algorithm), |
|
290 (Int32)(numFastBytes), |
|
291 mf, |
|
292 eos |
|
293 }; |
|
294 |
|
295 Compression.LZMA.Encoder encoder = new Compression.LZMA.Encoder(); |
|
296 encoder.SetCoderProperties(propIDs, properties); |
|
297 encoder.WriteCoderProperties(outStream); |
|
298 Int64 fileSize; |
|
299 if (eos || stdInMode) |
|
300 fileSize = -1; |
|
301 else |
|
302 fileSize = inStream.Length; |
|
303 for (int i = 0; i < 8; i++) |
|
304 outStream.WriteByte((Byte)(fileSize >> (8 * i))); |
|
305 if (trainStream != null) |
|
306 { |
|
307 CDoubleStream doubleStream = new CDoubleStream(); |
|
308 doubleStream.s1 = trainStream; |
|
309 doubleStream.s2 = inStream; |
|
310 doubleStream.fileIndex = 0; |
|
311 inStream = doubleStream; |
|
312 long trainFileSize = trainStream.Length; |
|
313 doubleStream.skipSize = 0; |
|
314 if (trainFileSize > dictionary) |
|
315 doubleStream.skipSize = trainFileSize - dictionary; |
|
316 trainStream.Seek(doubleStream.skipSize, SeekOrigin.Begin); |
|
317 encoder.SetTrainSize((uint)(trainFileSize - doubleStream.skipSize)); |
|
318 } |
|
319 encoder.Code(inStream, outStream, -1, -1, null); |
|
320 } |
|
321 else if (command == "d") |
|
322 { |
|
323 byte[] properties = new byte[5]; |
|
324 if (inStream.Read(properties, 0, 5) != 5) |
|
325 throw (new Exception("input .lzma is too short")); |
|
326 Compression.LZMA.Decoder decoder = new Compression.LZMA.Decoder(); |
|
327 decoder.SetDecoderProperties(properties); |
|
328 if (trainStream != null) |
|
329 { |
|
330 if (!decoder.Train(trainStream)) |
|
331 throw (new Exception("can't train")); |
|
332 } |
|
333 long outSize = 0; |
|
334 for (int i = 0; i < 8; i++) |
|
335 { |
|
336 int v = inStream.ReadByte(); |
|
337 if (v < 0) |
|
338 throw (new Exception("Can't Read 1")); |
|
339 outSize |= ((long)(byte)v) << (8 * i); |
|
340 } |
|
341 long compressedSize = inStream.Length - inStream.Position; |
|
342 decoder.Code(inStream, outStream, compressedSize, outSize, null); |
|
343 } |
|
344 else |
|
345 throw (new Exception("Command Error")); |
|
346 return 0; |
|
347 } |
|
348 |
|
349 [STAThread] |
|
350 static int Main(string[] args) |
|
351 { |
|
352 try |
|
353 { |
|
354 return Main2(args); |
|
355 } |
|
356 catch (Exception e) |
|
357 { |
|
358 Console.WriteLine("{0} Caught exception #1.", e); |
|
359 // throw e; |
|
360 return 1; |
|
361 } |
|
362 } |
|
363 } |
|
364 } |
|