diff options
Diffstat (limited to 'other-licenses/7zstub/src/Java/SevenZip/LzmaAlone.java')
| -rw-r--r-- | other-licenses/7zstub/src/Java/SevenZip/LzmaAlone.java | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/other-licenses/7zstub/src/Java/SevenZip/LzmaAlone.java b/other-licenses/7zstub/src/Java/SevenZip/LzmaAlone.java new file mode 100644 index 000000000..de39a22cc --- /dev/null +++ b/other-licenses/7zstub/src/Java/SevenZip/LzmaAlone.java @@ -0,0 +1,253 @@ +package SevenZip;
+
+public class LzmaAlone
+{
+ static public class CommandLine
+ {
+ public static final int kEncode = 0;
+ public static final int kDecode = 1;
+ public static final int kBenchmak = 2;
+
+ public int Command = -1;
+ public int NumBenchmarkPasses = 10;
+
+ public int DictionarySize = 1 << 23;
+ public boolean DictionarySizeIsDefined = false;
+
+ public int Lc = 3;
+ public int Lp = 0;
+ public int Pb = 2;
+
+ public int Fb = 128;
+ public boolean FbIsDefined = false;
+
+ public boolean Eos = false;
+
+ public int Algorithm = 2;
+ public int MatchFinder = 1;
+
+ public String InFile;
+ public String OutFile;
+
+ boolean ParseSwitch(String s)
+ {
+ if (s.startsWith("d"))
+ {
+ DictionarySize = 1 << Integer.parseInt(s.substring(1));
+ DictionarySizeIsDefined = true;
+ }
+ else if (s.startsWith("fb"))
+ {
+ Fb = Integer.parseInt(s.substring(2));
+ FbIsDefined = true;
+ }
+ else if (s.startsWith("a"))
+ Algorithm = Integer.parseInt(s.substring(1));
+ else if (s.startsWith("lc"))
+ Lc = Integer.parseInt(s.substring(2));
+ else if (s.startsWith("lp"))
+ Lp = Integer.parseInt(s.substring(2));
+ else if (s.startsWith("pb"))
+ Pb = Integer.parseInt(s.substring(2));
+ else if (s.startsWith("eos"))
+ Eos = true;
+ else if (s.startsWith("mf"))
+ {
+ String mfs = s.substring(2);
+ if (mfs.equals("bt2"))
+ MatchFinder = 0;
+ else if (mfs.equals("bt4"))
+ MatchFinder = 1;
+ else if (mfs.equals("bt4b"))
+ MatchFinder = 2;
+ else
+ return false;
+ }
+ else
+ return false;
+ return true;
+ }
+
+ public boolean Parse(String[] args) throws Exception
+ {
+ int pos = 0;
+ boolean switchMode = true;
+ for (int i = 0; i < args.length; i++)
+ {
+ String s = args[i];
+ if (s.length() == 0)
+ return false;
+ if (switchMode)
+ {
+ if (s.compareTo("--") == 0)
+ {
+ switchMode = false;
+ continue;
+ }
+ if (s.charAt(0) == '-')
+ {
+ String sw = s.substring(1).toLowerCase();
+ if (sw.length() == 0)
+ return false;
+ try
+ {
+ if (!ParseSwitch(sw))
+ return false;
+ }
+ catch (NumberFormatException e)
+ {
+ return false;
+ }
+ continue;
+ }
+ }
+ if (pos == 0)
+ {
+ if (s.equalsIgnoreCase("e"))
+ Command = kEncode;
+ else if (s.equalsIgnoreCase("d"))
+ Command = kDecode;
+ else if (s.equalsIgnoreCase("b"))
+ Command = kBenchmak;
+ else
+ return false;
+ }
+ else if(pos == 1)
+ {
+ if (Command == kBenchmak)
+ {
+ try
+ {
+ NumBenchmarkPasses = Integer.parseInt(s);
+ if (NumBenchmarkPasses < 1)
+ return false;
+ }
+ catch (NumberFormatException e)
+ {
+ return false;
+ }
+ }
+ else
+ InFile = s;
+ }
+ else if(pos == 2)
+ OutFile = s;
+ else
+ return false;
+ pos++;
+ continue;
+ }
+ return true;
+ }
+ }
+
+
+ static void PrintHelp()
+ {
+ System.out.println(
+ "\nUsage: LZMA <e|d> [<switches>...] inputFile outputFile\n" +
+ " e: encode file\n" +
+ " d: decode file\n" +
+ " b: Benchmark\n" +
+ "<Switches>\n" +
+ // " -a{N}: set compression mode - [0, 1], default: 1 (max)\n" +
+ " -d{N}: set dictionary - [0,28], default: 23 (8MB)\n" +
+ " -fb{N}: set number of fast bytes - [5, 273], default: 128\n" +
+ " -lc{N}: set number of literal context bits - [0, 8], default: 3\n" +
+ " -lp{N}: set number of literal pos bits - [0, 4], default: 0\n" +
+ " -pb{N}: set number of pos bits - [0, 4], default: 2\n" +
+ " -mf{MF_ID}: set Match Finder: [bt2, bt4], default: bt4\n" +
+ " -eos: write End Of Stream marker\n"
+ );
+ }
+
+ public static void main(String[] args) throws Exception
+ {
+ System.out.println("\nLZMA (Java) 4.61 2008-11-23\n");
+
+ if (args.length < 1)
+ {
+ PrintHelp();
+ return;
+ }
+
+ CommandLine params = new CommandLine();
+ if (!params.Parse(args))
+ {
+ System.out.println("\nIncorrect command");
+ return;
+ }
+
+ if (params.Command == CommandLine.kBenchmak)
+ {
+ int dictionary = (1 << 21);
+ if (params.DictionarySizeIsDefined)
+ dictionary = params.DictionarySize;
+ if (params.MatchFinder > 1)
+ throw new Exception("Unsupported match finder");
+ SevenZip.LzmaBench.LzmaBenchmark(params.NumBenchmarkPasses, dictionary);
+ }
+ else if (params.Command == CommandLine.kEncode || params.Command == CommandLine.kDecode)
+ {
+ java.io.File inFile = new java.io.File(params.InFile);
+ java.io.File outFile = new java.io.File(params.OutFile);
+
+ java.io.BufferedInputStream inStream = new java.io.BufferedInputStream(new java.io.FileInputStream(inFile));
+ java.io.BufferedOutputStream outStream = new java.io.BufferedOutputStream(new java.io.FileOutputStream(outFile));
+
+ boolean eos = false;
+ if (params.Eos)
+ eos = true;
+ if (params.Command == CommandLine.kEncode)
+ {
+ SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
+ if (!encoder.SetAlgorithm(params.Algorithm))
+ throw new Exception("Incorrect compression mode");
+ if (!encoder.SetDictionarySize(params.DictionarySize))
+ throw new Exception("Incorrect dictionary size");
+ if (!encoder.SetNumFastBytes(params.Fb))
+ throw new Exception("Incorrect -fb value");
+ if (!encoder.SetMatchFinder(params.MatchFinder))
+ throw new Exception("Incorrect -mf value");
+ if (!encoder.SetLcLpPb(params.Lc, params.Lp, params.Pb))
+ throw new Exception("Incorrect -lc or -lp or -pb value");
+ encoder.SetEndMarkerMode(eos);
+ encoder.WriteCoderProperties(outStream);
+ long fileSize;
+ if (eos)
+ fileSize = -1;
+ else
+ fileSize = inFile.length();
+ for (int i = 0; i < 8; i++)
+ outStream.write((int)(fileSize >>> (8 * i)) & 0xFF);
+ encoder.Code(inStream, outStream, -1, -1, null);
+ }
+ else
+ {
+ int propertiesSize = 5;
+ byte[] properties = new byte[propertiesSize];
+ if (inStream.read(properties, 0, propertiesSize) != propertiesSize)
+ throw new Exception("input .lzma file is too short");
+ SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
+ if (!decoder.SetDecoderProperties(properties))
+ throw new Exception("Incorrect stream properties");
+ long outSize = 0;
+ for (int i = 0; i < 8; i++)
+ {
+ int v = inStream.read();
+ if (v < 0)
+ throw new Exception("Can't read stream size");
+ outSize |= ((long)v) << (8 * i);
+ }
+ if (!decoder.Code(inStream, outStream, outSize))
+ throw new Exception("Error in data stream");
+ }
+ outStream.flush();
+ outStream.close();
+ inStream.close();
+ }
+ else
+ throw new Exception("Incorrect command");
+ return;
+ }
+}
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