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Deprecate crc32 and move it into std.hash.crc32.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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| /* | ||
| * Copyright (c) 2001, 2002 | ||
| * Pavel "EvilOne" Minayev | ||
| * Copyright (c) 2012 | ||
| * Alex Rønne Petersen | ||
| * | ||
| * Permission to use, copy, modify, distribute and sell this software | ||
| * and its documentation for any purpose is hereby granted without fee, | ||
| * provided that the above copyright notice appear in all copies and | ||
| * that both that copyright notice and this permission notice appear | ||
| * in supporting documentation. Author makes no representations about | ||
| * the suitability of this software for any purpose. It is provided | ||
| * "as is" without express or implied warranty. | ||
| */ | ||
|
|
||
| /** | ||
| Cyclic Redundancy Check (32-bit) implementation. | ||
| Macros: | ||
| WIKI = StdHashCRC32 | ||
| Copyright: Copyright Pavel "EvilOne" Minayev 2001, 2002. Copyright Alex Rønne Petersen 2012. | ||
| License: | ||
| Permission to use, copy, modify, distribute and sell this software | ||
| and its documentation for any purpose is hereby granted without fee, | ||
| provided that the above copyright notice appear in all copies and | ||
| that both that copyright notice and this permission notice appear | ||
| in supporting documentation. Author makes no representations about | ||
| the suitability of this software for any purpose. It is provided | ||
| "as is" without express or implied warranty. | ||
| Authors: Pavel "EvilOne" Minayev, Alex Rønne Petersen | ||
| Source: $(PHOBOSSRC std/hash/_crc32.d) | ||
| */ | ||
|
|
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| // CRC-32 calculation | ||
| module std.hash.crc32; | ||
|
|
||
| import std.range; | ||
|
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| @safe: | ||
|
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| private immutable uint[256] crc32_table = | ||
| [ | ||
| 0x00000000,0x77073096,0xee0e612c,0x990951ba,0x076dc419,0x706af48f,0xe963a535, | ||
| 0x9e6495a3,0x0edb8832,0x79dcb8a4,0xe0d5e91e,0x97d2d988,0x09b64c2b,0x7eb17cbd, | ||
| 0xe7b82d07,0x90bf1d91,0x1db71064,0x6ab020f2,0xf3b97148,0x84be41de,0x1adad47d, | ||
| 0x6ddde4eb,0xf4d4b551,0x83d385c7,0x136c9856,0x646ba8c0,0xfd62f97a,0x8a65c9ec, | ||
| 0x14015c4f,0x63066cd9,0xfa0f3d63,0x8d080df5,0x3b6e20c8,0x4c69105e,0xd56041e4, | ||
| 0xa2677172,0x3c03e4d1,0x4b04d447,0xd20d85fd,0xa50ab56b,0x35b5a8fa,0x42b2986c, | ||
| 0xdbbbc9d6,0xacbcf940,0x32d86ce3,0x45df5c75,0xdcd60dcf,0xabd13d59,0x26d930ac, | ||
| 0x51de003a,0xc8d75180,0xbfd06116,0x21b4f4b5,0x56b3c423,0xcfba9599,0xb8bda50f, | ||
| 0x2802b89e,0x5f058808,0xc60cd9b2,0xb10be924,0x2f6f7c87,0x58684c11,0xc1611dab, | ||
| 0xb6662d3d,0x76dc4190,0x01db7106,0x98d220bc,0xefd5102a,0x71b18589,0x06b6b51f, | ||
| 0x9fbfe4a5,0xe8b8d433,0x7807c9a2,0x0f00f934,0x9609a88e,0xe10e9818,0x7f6a0dbb, | ||
| 0x086d3d2d,0x91646c97,0xe6635c01,0x6b6b51f4,0x1c6c6162,0x856530d8,0xf262004e, | ||
| 0x6c0695ed,0x1b01a57b,0x8208f4c1,0xf50fc457,0x65b0d9c6,0x12b7e950,0x8bbeb8ea, | ||
| 0xfcb9887c,0x62dd1ddf,0x15da2d49,0x8cd37cf3,0xfbd44c65,0x4db26158,0x3ab551ce, | ||
| 0xa3bc0074,0xd4bb30e2,0x4adfa541,0x3dd895d7,0xa4d1c46d,0xd3d6f4fb,0x4369e96a, | ||
| 0x346ed9fc,0xad678846,0xda60b8d0,0x44042d73,0x33031de5,0xaa0a4c5f,0xdd0d7cc9, | ||
| 0x5005713c,0x270241aa,0xbe0b1010,0xc90c2086,0x5768b525,0x206f85b3,0xb966d409, | ||
| 0xce61e49f,0x5edef90e,0x29d9c998,0xb0d09822,0xc7d7a8b4,0x59b33d17,0x2eb40d81, | ||
| 0xb7bd5c3b,0xc0ba6cad,0xedb88320,0x9abfb3b6,0x03b6e20c,0x74b1d29a,0xead54739, | ||
| 0x9dd277af,0x04db2615,0x73dc1683,0xe3630b12,0x94643b84,0x0d6d6a3e,0x7a6a5aa8, | ||
| 0xe40ecf0b,0x9309ff9d,0x0a00ae27,0x7d079eb1,0xf00f9344,0x8708a3d2,0x1e01f268, | ||
| 0x6906c2fe,0xf762575d,0x806567cb,0x196c3671,0x6e6b06e7,0xfed41b76,0x89d32be0, | ||
| 0x10da7a5a,0x67dd4acc,0xf9b9df6f,0x8ebeeff9,0x17b7be43,0x60b08ed5,0xd6d6a3e8, | ||
| 0xa1d1937e,0x38d8c2c4,0x4fdff252,0xd1bb67f1,0xa6bc5767,0x3fb506dd,0x48b2364b, | ||
| 0xd80d2bda,0xaf0a1b4c,0x36034af6,0x41047a60,0xdf60efc3,0xa867df55,0x316e8eef, | ||
| 0x4669be79,0xcb61b38c,0xbc66831a,0x256fd2a0,0x5268e236,0xcc0c7795,0xbb0b4703, | ||
| 0x220216b9,0x5505262f,0xc5ba3bbe,0xb2bd0b28,0x2bb45a92,0x5cb36a04,0xc2d7ffa7, | ||
| 0xb5d0cf31,0x2cd99e8b,0x5bdeae1d,0x9b64c2b0,0xec63f226,0x756aa39c,0x026d930a, | ||
| 0x9c0906a9,0xeb0e363f,0x72076785,0x05005713,0x95bf4a82,0xe2b87a14,0x7bb12bae, | ||
| 0x0cb61b38,0x92d28e9b,0xe5d5be0d,0x7cdcefb7,0x0bdbdf21,0x86d3d2d4,0xf1d4e242, | ||
| 0x68ddb3f8,0x1fda836e,0x81be16cd,0xf6b9265b,0x6fb077e1,0x18b74777,0x88085ae6, | ||
| 0xff0f6a70,0x66063bca,0x11010b5c,0x8f659eff,0xf862ae69,0x616bffd3,0x166ccf45, | ||
| 0xa00ae278,0xd70dd2ee,0x4e048354,0x3903b3c2,0xa7672661,0xd06016f7,0x4969474d, | ||
| 0x3e6e77db,0xaed16a4a,0xd9d65adc,0x40df0b66,0x37d83bf0,0xa9bcae53,0xdebb9ec5, | ||
| 0x47b2cf7f,0x30b5ffe9,0xbdbdf21c,0xcabac28a,0x53b39330,0x24b4a3a6,0xbad03605, | ||
| 0xcdd70693,0x54de5729,0x23d967bf,0xb3667a2e,0xc4614ab8,0x5d681b02,0x2a6f2b94, | ||
| 0xb40bbe37,0xc30c8ea1,0x5a05df1b,0x2d02ef8d | ||
| ]; | ||
|
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||
| /** | ||
| * The initial value of a CRC32 computation. | ||
| */ | ||
| enum uint crc32Init = uint.max; | ||
|
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| /** | ||
| * Updates a given CRC32 value with the given byte value. | ||
| * | ||
| * Params: | ||
| * crc = The current CRC32 value. | ||
| * val = The value to add to the CRC32 computation. | ||
| */ | ||
| uint updateCRC32(T)(uint crc, T val) pure nothrow | ||
| if (is(T == ubyte) || is(T == byte)) | ||
| { | ||
| return crc32_table[cast(ubyte)crc ^ cast(ubyte)val] ^ (crc >> 8); | ||
| } | ||
|
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| /** | ||
| * Computes the CRC32 value of a given range of bytes. | ||
| * | ||
| * Params: | ||
| * range = The range to compute a CRC32 value for. | ||
| */ | ||
| uint rangeToCRC32(R)(in R range) pure nothrow | ||
| if (isInputRange!R && (is(ElementType!R == byte) || is(ElementType!R == ubyte))) | ||
| { | ||
| uint crc = crc32Init; | ||
|
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| foreach (val; range) | ||
| crc = updateCRC32!(ElementType!R)(crc, val); | ||
|
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| return crc; | ||
| } | ||
|
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| unittest | ||
| { | ||
| ubyte[] bytes1 = [1, 2, 3]; | ||
| byte[] bytes2 = [1, 2, 3]; | ||
|
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| rangeToCRC32(bytes1); // ensure that we can call with ubyte[] | ||
| rangeToCRC32(bytes2); // ensure that we can call with byte[] | ||
| } |
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