third_party/lzma/v4_65/files/Java/SevenZip/LzmaAlone.java - Issue 624713003: Keep only base/extractor.[cc|h].

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Issue 624713003: Keep only base/extractor.[cc|h]. (Closed) Base URL: https://chromium.googlesource.com/external/omaha.git@master

Patch Set: Created 6 years, 2 months ago

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1 package SevenZip;

2

3 public 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.substri ng(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).toLow erCase();

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 = Int eger.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], def ault: 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], defa ult: 2\n" +

159 " -mf{MF_ID}: set Match Finder: [bt2, bt4], def ault: bt4\n" +

160 " -eos: write End Of Stream marker\n"

161 );

162 }

163

164 public static void main(String[] args) throws Exception

165 {

166 System.out.println("\nLZMA (Java) 4.61 2008-11-23\n");

167

168 if (args.length < 1)

169 {

170 PrintHelp();

171 return;

172 }

173

174 CommandLine params = new CommandLine();

175 if (!params.Parse(args))

176 {

177 System.out.println("\nIncorrect command");

178 return;

179 }

180

181 if (params.Command == CommandLine.kBenchmak)

182 {

183 int dictionary = (1 << 21);

184 if (params.DictionarySizeIsDefined)

185 dictionary = params.DictionarySize;

186 if (params.MatchFinder > 1)

187 throw new Exception("Unsupported match finder");

188 SevenZip.LzmaBench.LzmaBenchmark(params.NumBenchmarkPass es, dictionary);

189 }

190 else if (params.Command == CommandLine.kEncode \|\| params.Command == CommandLine.kDecode)

191 {

192 java.io.File inFile = new java.io.File(params.InFile);

193 java.io.File outFile = new java.io.File(params.OutFile);

194

195 java.io.BufferedInputStream inStream = new java.io.Buff eredInputStream(new java.io.FileInputStream(inFile));

196 java.io.BufferedOutputStream outStream = new java.io.Buf feredOutputStream(new java.io.FileOutputStream(outFile));

197

198 boolean eos = false;

199 if (params.Eos)

200 eos = true;

201 if (params.Command == CommandLine.kEncode)

202 {

203 SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();

204 if (!encoder.SetAlgorithm(params.Algorithm))

205 throw new Exception("Incorrect compressi on mode");

206 if (!encoder.SetDictionarySize(params.Dictionary Size))

207 throw new Exception("Incorrect dictionar y size");

208 if (!encoder.SetNumFastBytes(params.Fb))

209 throw new Exception("Incorrect -fb value ");

210 if (!encoder.SetMatchFinder(params.MatchFinder))

211 throw new Exception("Incorrect -mf value ");

212 if (!encoder.SetLcLpPb(params.Lc, params.Lp, par ams.Pb))

213 throw new Exception("Incorrect -lc or -l p or -pb value");

214 encoder.SetEndMarkerMode(eos);

215 encoder.WriteCoderProperties(outStream);

216 long fileSize;

217 if (eos)

218 fileSize = -1;

219 else

220 fileSize = inFile.length();

221 for (int i = 0; i < 8; i++)

222 outStream.write((int)(fileSize >>> (8 * i)) & 0xFF);

223 encoder.Code(inStream, outStream, -1, -1, null);

224 }

225 else

226 {

227 int propertiesSize = 5;

228 byte[] properties = new byte[propertiesSize];

229 if (inStream.read(properties, 0, propertiesSize) != propertiesSize)

230 throw new Exception("input .lzma file is too short");

231 SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();

232 if (!decoder.SetDecoderProperties(properties))

233 throw new Exception("Incorrect stream pr operties");

234 long outSize = 0;

235 for (int i = 0; i < 8; i++)

236 {

237 int v = inStream.read();

238 if (v < 0)

239 throw new Exception("Can't read stream size");

240 outSize \|= ((long)v) << (8 * i);

241 }

242 if (!decoder.Code(inStream, outStream, outSize))

243 throw new Exception("Error in data strea m");

244 }

245 outStream.flush();

246 outStream.close();

247 inStream.close();

248 }

249 else

250 throw new Exception("Incorrect command");

251 return;

252 }

253 }

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