misc/libphysfs/lzma/Java/SevenZip/LzmaAlone.java
changeset 12218 bb5522e88ab2
equal deleted inserted replaced
12217:ea891871f481 12218:bb5522e88ab2
       
     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.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 main(String[] args) throws Exception
       
   165 	{
       
   166 		System.out.println("\nLZMA (Java) 4.42 Copyright (c) 1999-2006 Igor Pavlov  2006-05-15\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.NumBenchmarkPasses, 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.BufferedInputStream(new java.io.FileInputStream(inFile));
       
   196 			java.io.BufferedOutputStream outStream = new java.io.BufferedOutputStream(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 compression mode");
       
   206 				if (!encoder.SetDictionarySize(params.DictionarySize))
       
   207 					throw new Exception("Incorrect dictionary size");
       
   208 				if (!encoder.SeNumFastBytes(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, params.Pb))
       
   213 					throw new Exception("Incorrect -lc or -lp 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 properties");
       
   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 stream");
       
   244 			}
       
   245 			outStream.flush();
       
   246 			outStream.close();
       
   247 			inStream.close();
       
   248 		}
       
   249 		else
       
   250 			throw new Exception("Incorrect command");
       
   251 		return;
       
   252 	}
       
   253 }