misc/libphysfs/lzma/Java/SevenZip/LzmaAlone.java
changeset 12213 bb5522e88ab2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/Java/SevenZip/LzmaAlone.java	Mon Apr 10 12:06:43 2017 -0400
@@ -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) 4.42 Copyright (c) 1999-2006 Igor Pavlov  2006-05-15\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.SeNumFastBytes(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;
+	}
+}