source: other-projects/trunk/7z-ant/src/SevenZip/LzmaAlone.java@ 17387

Last change on this file since 17387 was 17387, checked in by oranfry, 16 years ago

Modified ant task which works with the updated 7zip API
File size: 6.9 KB
Line 
1package SevenZip;
2
3public class LzmaAlone
4{
5 static public class CommandLine
6 {
7 public static final int kEncode = 0;
8 public static final int kDecode = 1;
9 public static final int kBenchmak = 2;
10
11 public int Command = -1;
12 public int NumBenchmarkPasses = 10;
13
14 public int DictionarySize = 1 << 23;
15 public boolean DictionarySizeIsDefined = false;
16
17 public int Lc = 3;
18 public int Lp = 0;
19 public int Pb = 2;
20
21 public int Fb = 128;
22 public boolean FbIsDefined = false;
23
24 public boolean Eos = false;
25
26 public int Algorithm = 2;
27 public int MatchFinder = 1;
28
29 public String InFile;
30 public String OutFile;
31
32 boolean ParseSwitch(String s)
33 {
34 if (s.startsWith("d"))
35 {
36 DictionarySize = 1 << Integer.parseInt(s.substring(1));
37 DictionarySizeIsDefined = true;
38 }
39 else if (s.startsWith("fb"))
40 {
41 Fb = Integer.parseInt(s.substring(2));
42 FbIsDefined = true;
43 }
44 else if (s.startsWith("a"))
45 Algorithm = Integer.parseInt(s.substring(1));
46 else if (s.startsWith("lc"))
47 Lc = Integer.parseInt(s.substring(2));
48 else if (s.startsWith("lp"))
49 Lp = Integer.parseInt(s.substring(2));
50 else if (s.startsWith("pb"))
51 Pb = Integer.parseInt(s.substring(2));
52 else if (s.startsWith("eos"))
53 Eos = true;
54 else if (s.startsWith("mf"))
55 {
56 String mfs = s.substring(2);
57 if (mfs.equals("bt2"))
58 MatchFinder = 0;
59 else if (mfs.equals("bt4"))
60 MatchFinder = 1;
61 else if (mfs.equals("bt4b"))
62 MatchFinder = 2;
63 else
64 return false;
65 }
66 else
67 return false;
68 return true;
69 }
70
71 public boolean Parse(String[] args) throws Exception
72 {
73 int pos = 0;
74 boolean switchMode = true;
75 for (int i = 0; i < args.length; i++)
76 {
77 String s = args[i];
78 if (s.length() == 0)
79 return false;
80 if (switchMode)
81 {
82 if (s.compareTo("--") == 0)
83 {
84 switchMode = false;
85 continue;
86 }
87 if (s.charAt(0) == '-')
88 {
89 String sw = s.substring(1).toLowerCase();
90 if (sw.length() == 0)
91 return false;
92 try
93 {
94 if (!ParseSwitch(sw))
95 return false;
96 }
97 catch (NumberFormatException e)
98 {
99 return false;
100 }
101 continue;
102 }
103 }
104 if (pos == 0)
105 {
106 if (s.equalsIgnoreCase("e"))
107 Command = kEncode;
108 else if (s.equalsIgnoreCase("d"))
109 Command = kDecode;
110 else if (s.equalsIgnoreCase("b"))
111 Command = kBenchmak;
112 else
113 return false;
114 }
115 else if(pos == 1)
116 {
117 if (Command == kBenchmak)
118 {
119 try
120 {
121 NumBenchmarkPasses = Integer.parseInt(s);
122 if (NumBenchmarkPasses < 1)
123 return false;
124 }
125 catch (NumberFormatException e)
126 {
127 return false;
128 }
129 }
130 else
131 InFile = s;
132 }
133 else if(pos == 2)
134 OutFile = s;
135 else
136 return false;
137 pos++;
138 continue;
139 }
140 return true;
141 }
142 }
143
144
145 static void PrintHelp()
146 {
147 System.out.println(
148 "\nUsage: LZMA <e|d> [<switches>...] inputFile outputFile\n" +
149 " e: encode file\n" +
150 " d: decode file\n" +
151 " b: Benchmark\n" +
152 "<Switches>\n" +
153 // " -a{N}: set compression mode - [0, 1], default: 1 (max)\n" +
154 " -d{N}: set dictionary - [0,28], default: 23 (8MB)\n" +
155 " -fb{N}: set number of fast bytes - [5, 273], default: 128\n" +
156 " -lc{N}: set number of literal context bits - [0, 8], default: 3\n" +
157 " -lp{N}: set number of literal pos bits - [0, 4], default: 0\n" +
158 " -pb{N}: set number of pos bits - [0, 4], default: 2\n" +
159 " -mf{MF_ID}: set Match Finder: [bt2, bt4], default: bt4\n" +
160 " -eos: write End Of Stream marker\n"
161 );
162 }
163
164 public static void main2(String[] args) throws Exception {
165 main( args );
166 }
167
168 public static void main(String[] args) throws Exception
169 {
170 System.out.println("\nLZMA (Java) 4.42 Copyright (c) 1999-2006 Igor Pavlov 2006-05-15\n");
171
172 if (args.length < 1)
173 {
174 PrintHelp();
175 return;
176 }
177
178 CommandLine params = new CommandLine();
179 if (!params.Parse(args))
180 {
181 System.out.println("\nIncorrect command");
182 return;
183 }
184
185 if (params.Command == CommandLine.kBenchmak)
186 {
187 int dictionary = (1 << 21);
188 if (params.DictionarySizeIsDefined)
189 dictionary = params.DictionarySize;
190 if (params.MatchFinder > 1)
191 throw new Exception("Unsupported match finder");
192 SevenZip.LzmaBench.LzmaBenchmark(params.NumBenchmarkPasses, dictionary);
193 }
194 else if (params.Command == CommandLine.kEncode || params.Command == CommandLine.kDecode)
195 {
196 java.io.File inFile = new java.io.File(params.InFile);
197 java.io.File outFile = new java.io.File(params.OutFile);
198
199 java.io.BufferedInputStream inStream = new java.io.BufferedInputStream(new java.io.FileInputStream(inFile));
200 java.io.BufferedOutputStream outStream = new java.io.BufferedOutputStream(new java.io.FileOutputStream(outFile));
201
202 boolean eos = false;
203 if (params.Eos)
204 eos = true;
205 if (params.Command == CommandLine.kEncode)
206 {
207 SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
208 if (!encoder.SetAlgorithm(params.Algorithm))
209 throw new Exception("Incorrect compression mode");
210 if (!encoder.SetDictionarySize(params.DictionarySize))
211 throw new Exception("Incorrect dictionary size");
212 if (!encoder.SeNumFastBytes(params.Fb))
213 throw new Exception("Incorrect -fb value");
214 if (!encoder.SetMatchFinder(params.MatchFinder))
215 throw new Exception("Incorrect -mf value");
216 if (!encoder.SetLcLpPb(params.Lc, params.Lp, params.Pb))
217 throw new Exception("Incorrect -lc or -lp or -pb value");
218 encoder.SetEndMarkerMode(eos);
219 encoder.WriteCoderProperties(outStream);
220 long fileSize;
221 if (eos)
222 fileSize = -1;
223 else
224 fileSize = inFile.length();
225 for (int i = 0; i < 8; i++)
226 outStream.write((int)(fileSize >>> (8 * i)) & 0xFF);
227 encoder.Code(inStream, outStream, -1, -1, null);
228 }
229 else
230 {
231 int propertiesSize = 5;
232 byte[] properties = new byte[propertiesSize];
233 if (inStream.read(properties, 0, propertiesSize) != propertiesSize)
234 throw new Exception("input .lzma file is too short");
235 SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
236 if (!decoder.SetDecoderProperties(properties))
237 throw new Exception("Incorrect stream properties");
238 long outSize = 0;
239 for (int i = 0; i < 8; i++)
240 {
241 int v = inStream.read();
242 if (v < 0)
243 throw new Exception("Can't read stream size");
244 outSize |= ((long)v) << (8 * i);
245 }
246 if (!decoder.Code(inStream, outStream, outSize))
247 throw new Exception("Error in data stream");
248 }
249 outStream.flush();
250 outStream.close();
251 inStream.close();
252 }
253 else
254 throw new Exception("Incorrect command");
255 return;
256 }
257}
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