release/src-rt-6.x/linux/linux-2.6/scripts/squashfs/lzma/C/7zip/Compress/LZMA_C/LzmaStateTest.c

   1 /*
   2 LzmaStateTest.c
   3 Test application for LZMA Decoder (State version)
   4
   5 This file written and distributed to public domain by Igor Pavlov.
   6 This file is part of LZMA SDK 4.26 (2005-08-02)
   7 */
   8
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12
  13 #include "LzmaStateDecode.h"
  14
  15 const char *kCantReadMessage = "Can not read input file";
  16 const char *kCantWriteMessage = "Can not write output file";
  17 const char *kCantAllocateMessage = "Can not allocate memory";
  18
  19 #define kInBufferSize (1 << 15)
  20 #define kOutBufferSize (1 << 15)
  21
  22 unsigned char g_InBuffer[kInBufferSize];
  23 unsigned char g_OutBuffer[kOutBufferSize];
  24
  25 size_t MyReadFile(FILE *file, void *data, size_t size)
  26   { return fread(data, 1, size, file); }
  27
  28 int MyReadFileAndCheck(FILE *file, void *data, size_t size)
  29   { return (MyReadFile(file, data, size) == size); }
  30
  31 int PrintError(char *buffer, const char *message)
  32 {
  33   sprintf(buffer + strlen(buffer), "\nError: ");
  34   sprintf(buffer + strlen(buffer), message);
  35   return 1;
  36 }
  37
  38 int main3(FILE *inFile, FILE *outFile, char *rs)
  39 {
  40   /* We use two 32-bit integers to construct 64-bit integer for file size.
  41      You can remove outSizeHigh, if you don't need >= 4GB supporting,
  42      or you can use UInt64 outSize, if your compiler supports 64-bit integers*/
  43   UInt32 outSize = 0;
  44   UInt32 outSizeHigh = 0;
  45
  46   int waitEOS = 1;
  47   /* waitEOS = 1, if there is no uncompressed size in headers,
  48    so decoder will wait EOS (End of Stream Marker) in compressed stream */
  49
  50   int i;
  51   int res = 0;
  52   CLzmaDecoderState state;  /* it's about 140 bytes structure, if int is 32-bit */
  53   unsigned char properties[LZMA_PROPERTIES_SIZE];
  54   SizeT inAvail = 0;
  55   unsigned char *inBuffer = 0;
  56
  57   if (sizeof(UInt32) < 4)
  58     return PrintError(rs, "LZMA decoder needs correct UInt32");
  59
  60   /* Read LZMA properties for compressed stream */
  61
  62   if (!MyReadFileAndCheck(inFile, properties, sizeof(properties)))
  63     return PrintError(rs, kCantReadMessage);
  64
  65   /* Read uncompressed size */
  66
  67   for (i = 0; i < 8; i++)
  68   {
  69     unsigned char b;
  70     if (!MyReadFileAndCheck(inFile, &b, 1))
  71       return PrintError(rs, kCantReadMessage);
  72     if (b != 0xFF)
  73       waitEOS = 0;
  74     if (i < 4)
  75       outSize += (UInt32)(b) << (i * 8);
  76     else
  77       outSizeHigh += (UInt32)(b) << ((i - 4) * 8);
  78   }
  79
  80   /* Decode LZMA properties and allocate memory */
  81
  82   if (LzmaDecodeProperties(&state.Properties, properties, LZMA_PROPERTIES_SIZE) != LZMA_RESULT_OK)
  83     return PrintError(rs, "Incorrect stream properties");
  84   state.Probs = (CProb *)malloc(LzmaGetNumProbs(&state.Properties) * sizeof(CProb));
  85   if (state.Probs == 0)
  86     return PrintError(rs, kCantAllocateMessage);
  87
  88   if (state.Properties.DictionarySize == 0)
  89     state.Dictionary = 0;
  90   else
  91   {
  92     state.Dictionary = (unsigned char *)malloc(state.Properties.DictionarySize);
  93     if (state.Dictionary == 0)
  94     {
  95       free(state.Probs);
  96       return PrintError(rs, kCantAllocateMessage);
  97     }
  98   }
  99
 100   /* Decompress */
 101
 102   LzmaDecoderInit(&state);
 103
 104   do
 105   {
 106     SizeT inProcessed, outProcessed;
 107     int finishDecoding;
 108     UInt32 outAvail = kOutBufferSize;
 109     if (!waitEOS && outSizeHigh == 0 && outAvail > outSize)
 110       outAvail = outSize;
 111     if (inAvail == 0)
 112     {
 113       inAvail = (SizeT)MyReadFile(inFile, g_InBuffer, kInBufferSize);
 114       inBuffer = g_InBuffer;
 115     }
 116     finishDecoding = (inAvail == 0);
 117     res = LzmaDecode(&state,
 118         inBuffer, inAvail, &inProcessed,
 119         g_OutBuffer, outAvail, &outProcessed,
 120         finishDecoding);
 121     if (res != 0)
 122     {
 123       sprintf(rs + strlen(rs), "\nDecoding error = %d\n", res);
 124       res = 1;
 125       break;
 126     }
 127     inAvail -= inProcessed;
 128     inBuffer += inProcessed;
 129
 130     if (outFile != 0)
 131       if (fwrite(g_OutBuffer, 1, outProcessed, outFile) != outProcessed)
 132       {
 133         PrintError(rs, kCantWriteMessage);
 134         res = 1;
 135         break;
 136       }
 137
 138     if (outSize < outProcessed)
 139       outSizeHigh--;
 140     outSize -= (UInt32)outProcessed;
 141     outSize &= 0xFFFFFFFF;
 142
 143     if (outProcessed == 0 && finishDecoding)
 144     {
 145       if (!waitEOS && (outSize != 0 || outSizeHigh != 0))
 146         res = 1;
 147       break;
 148     }
 149   }
 150   while ((outSize != 0 && outSizeHigh == 0) || outSizeHigh != 0  || waitEOS);
 151
 152   free(state.Dictionary);
 153   free(state.Probs);
 154   return res;
 155 }
 156
 157 int main2(int numArgs, const char *args[], char *rs)
 158 {
 159   FILE *inFile = 0;
 160   FILE *outFile = 0;
 161   int res;
 162
 163   sprintf(rs + strlen(rs), "\nLZMA Decoder 4.26 Copyright (c) 1999-2005 Igor Pavlov  2005-08-02\n");
 164   if (numArgs < 2 || numArgs > 3)
 165   {
 166     sprintf(rs + strlen(rs), "\nUsage:  lzmadec file.lzma [outFile]\n");
 167     return 1;
 168   }
 169
 170   inFile = fopen(args[1], "rb");
 171   if (inFile == 0)
 172     return PrintError(rs, "Can not open input file");
 173
 174   if (numArgs > 2)
 175   {
 176     outFile = fopen(args[2], "wb+");
 177     if (outFile == 0)
 178       return PrintError(rs, "Can not open output file");
 179   }
 180
 181   res = main3(inFile, outFile, rs);
 182
 183   if (outFile != 0)
 184     fclose(outFile);
 185   fclose(inFile);
 186   return res;
 187 }
 188
 189 int main(int numArgs, const char *args[])
 190 {
 191   char rs[800] = { 0 };
 192   int res = main2(numArgs, args, rs);
 193   printf(rs);
 194   return res;
 195 }