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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 99 | pmbaty | 1 | /* |
| 2 | This Software is distributed with the following X11 License, |
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| 3 | sometimes also known as MIT license. |
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| 4 | |||
| 5 | Copyright (c) 2010 Miguel A. Ballicora |
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| 6 | |||
| 7 | Permission is hereby granted, free of charge, to any person |
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| 8 | obtaining a copy of this software and associated documentation |
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| 9 | files (the "Software"), to deal in the Software without |
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| 10 | restriction, including without limitation the rights to use, |
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| 11 | copy, modify, merge, publish, distribute, sublicense, and/or sell |
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| 12 | copies of the Software, and to permit persons to whom the |
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| 13 | Software is furnished to do so, subject to the following |
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| 14 | conditions: |
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| 15 | |||
| 16 | The above copyright notice and this permission notice shall be |
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| 17 | included in all copies or substantial portions of the Software. |
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| 18 | |||
| 19 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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| 20 | EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES |
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| 21 | OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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| 22 | NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT |
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| 23 | HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
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| 24 | WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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| 25 | FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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| 26 | OTHER DEALINGS IN THE SOFTWARE. |
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| 27 | */ |
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| 28 | |||
| 29 | /*--------------------------------------------------------------------------*\ |
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| 30 | | |
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| 31 | | Compressing wrapper functions |
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| 32 | | |
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| 33 | *---------------------------------------------------------------------------*/ |
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| 34 | #define MAXBLOCK (1 << 16) |
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| 35 | |||
| 36 | #include <stdlib.h> |
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| 37 | #include "gtb-dec.h" |
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| 38 | #ifdef HUFFMAN |
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| 39 | #include "hzip.h" |
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| 40 | #endif |
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| 41 | #include "wrap.h" |
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| 42 | |||
| 43 | typedef int bool_t; |
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| 44 | |||
| 45 | #ifndef TRUE |
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| 46 | #define TRUE 1 |
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| 47 | #endif |
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| 48 | #ifndef FALSE |
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| 49 | #define FALSE 0; |
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| 50 | #endif |
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| 51 | |||
| 52 | /*static unsigned char intermediate_block[MAXBLOCK] ;*/ |
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| 53 | |||
| 54 | static int DECODE_SCHEME = CP4; |
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| 55 | static int CP_SCHEME = CP4; |
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| 56 | |||
| 57 | static int f_decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp); |
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| 58 | |||
| 59 | extern void |
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| 60 | set_decoding_scheme(int x) |
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| 61 | { |
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| 62 | DECODE_SCHEME = x; |
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| 63 | CP_SCHEME = x; |
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| 64 | } |
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| 65 | |||
| 66 | extern int decoding_scheme(void) |
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| 67 | { |
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| 68 | return DECODE_SCHEME; |
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| 69 | } |
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| 70 | |||
| 71 | extern int |
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| 72 | decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp) |
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| 73 | { |
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| 74 | return f_decode (z, bz, n, bp); |
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| 75 | } |
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| 76 | |||
| 77 | /*======================== WRAPPERS ========================*/ |
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| 78 | |||
| 79 | static int |
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| 80 | f_decode (size_t z, unsigned char *bz, size_t n, unsigned char *bp) |
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| 81 | { |
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| 82 | /* bp buffer provided |
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| 83 | | bz buffer "zipped", compressed |
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| 84 | | n len of buffer provided |
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| 85 | | z len of buffer zipped |
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| 86 | \*---------------------------------------------------------------*/ |
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| 87 | |||
| 88 | /* |
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| 89 | unsigned char *ib = intermediate_block; |
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| 90 | unsigned int m; |
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| 91 | return huff_decode (bz, z, ib, &m, MAXBLOCK) && rle_decode (ib, m, bp, &n, MAXBLOCK); |
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| 92 | */ |
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| 93 | #if defined(HUFFMAN) |
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| 94 | if (CP_SCHEME == CP1) { |
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| 95 | |||
| 96 | /* HUFFMAN */ |
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| 97 | return huff_decode (bz, z, bp, &n, MAXBLOCK); |
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| 98 | |||
| 99 | } else |
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| 100 | #endif |
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| 101 | #if defined(LIBLZF) |
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| 102 | if (CP_SCHEME == CP2) { |
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| 103 | |||
| 104 | /* LZF */ |
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| 105 | return lzf_decode (bz, z, bp, &n, MAXBLOCK); |
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| 106 | |||
| 107 | } else |
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| 108 | #endif |
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| 109 | #if defined (ZLIB) |
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| 110 | if (CP_SCHEME == CP3) { |
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| 111 | |||
| 112 | /* ZLIB */ |
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| 113 | return zlib_decode (bz, z, bp, &n, MAXBLOCK); |
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| 114 | |||
| 115 | } else |
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| 116 | #endif |
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| 117 | if (CP_SCHEME == CP4) { |
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| 118 | |||
| 119 | /* LZMA86 */ |
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| 120 | return lzma_decode (bz, z, bp, &n, n); /* maximum needs to be the exact number that it will produce */ |
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| 121 | |||
| 122 | } else if (CP_SCHEME == CP7) { |
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| 123 | |||
| 124 | /* RLE */ |
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| 125 | return rle_decode (bz, z, bp, &n, MAXBLOCK); |
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| 126 | |||
| 127 | #if defined (LIBBZIP2) |
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| 128 | } else if (CP_SCHEME == CP8) { |
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| 129 | |||
| 130 | /* BZIP2 */ |
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| 131 | return bzip2_decode (bz, z, bp, &n, MAXBLOCK); |
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| 132 | #endif |
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| 133 | |||
| 134 | } else if (CP_SCHEME == CP9) { |
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| 135 | |||
| 136 | return justcopy_decode (bz, z, bp, &n, MAXBLOCK); |
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| 137 | |||
| 138 | } else { |
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| 139 | |||
| 140 | return FALSE; |
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| 141 | } |
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| 142 | } |
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| 143 |