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527f2f9057
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
438 lines
13 KiB
C
438 lines
13 KiB
C
/* mpg123 note: This is BSD-licensed code that is no problem for mpg123 usage under LGPL.
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It's Free, understood? ;-) */
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/* Another note: This code is basically written by Thorsten Glaser,
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Thomas Orgis did just some rearrangements and comments. */
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/*-
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* Copyright (c) 2008
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* Thorsten Glaser <tg@mirbsd.org>
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*
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* Provided that these terms and disclaimer and all copyright notices
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* are retained or reproduced in an accompanying document, permission
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* is granted to deal in this work without restriction, including un-
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* limited rights to use, publicly perform, distribute, sell, modify,
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* merge, give away, or sublicence.
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*
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* This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
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* the utmost extent permitted by applicable law, neither express nor
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* implied; without malicious intent or gross negligence. In no event
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* may a licensor, author or contributor be held liable for indirect,
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* direct, other damage, loss, or other issues arising in any way out
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* of dealing in the work, even if advised of the possibility of such
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* damage or existence of a defect, except proven that it results out
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* of said person's immediate fault when using the work as intended.
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*-
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* Convert from ICY encoding (windows-1252 codepage) to UTF-8
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*/
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/* Includes string and stdlib headers... */
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#include "compat.h"
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/* ThOr: too lazy for this type check; also we use char/short all around anyway.
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Of cource, it would be the proper way to use _these_ kind of types all around. */
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#define uint8_t unsigned char
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#define uint16_t unsigned short
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static const uint8_t cp1252_utf8[] = {
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/* 0x00 @ 0 */ 0x00,
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/* 0x01 @ 1 */ 0x01,
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/* 0x02 @ 2 */ 0x02,
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/* 0x03 @ 3 */ 0x03,
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/* 0x04 @ 4 */ 0x04,
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/* 0x05 @ 5 */ 0x05,
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/* 0x06 @ 6 */ 0x06,
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/* 0x07 @ 7 */ 0x07,
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/* 0x08 @ 8 */ 0x08,
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/* 0x09 @ 9 */ 0x09,
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/* 0x0A @ 10 */ 0x0A,
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/* 0x0B @ 11 */ 0x0B,
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/* 0x0C @ 12 */ 0x0C,
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/* 0x0D @ 13 */ 0x0D,
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/* 0x0E @ 14 */ 0x0E,
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/* 0x0F @ 15 */ 0x0F,
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/* 0x10 @ 16 */ 0x10,
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/* 0x11 @ 17 */ 0x11,
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/* 0x12 @ 18 */ 0x12,
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/* 0x13 @ 19 */ 0x13,
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/* 0x14 @ 20 */ 0x14,
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/* 0x15 @ 21 */ 0x15,
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/* 0x16 @ 22 */ 0x16,
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/* 0x17 @ 23 */ 0x17,
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/* 0x18 @ 24 */ 0x18,
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/* 0x19 @ 25 */ 0x19,
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/* 0x1A @ 26 */ 0x1A,
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/* 0x1B @ 27 */ 0x1B,
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/* 0x1C @ 28 */ 0x1C,
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/* 0x1D @ 29 */ 0x1D,
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/* 0x1E @ 30 */ 0x1E,
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/* 0x1F @ 31 */ 0x1F,
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/* 0x20 @ 32 */ 0x20,
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/* 0x21 @ 33 */ 0x21,
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/* 0x22 @ 34 */ 0x22,
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/* 0x23 @ 35 */ 0x23,
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/* 0x24 @ 36 */ 0x24,
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/* 0x25 @ 37 */ 0x25,
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/* 0x26 @ 38 */ 0x26,
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/* 0x27 @ 39 */ 0x27,
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/* 0x28 @ 40 */ 0x28,
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/* 0x29 @ 41 */ 0x29,
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/* 0x2A @ 42 */ 0x2A,
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/* 0x2B @ 43 */ 0x2B,
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/* 0x2C @ 44 */ 0x2C,
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/* 0x2D @ 45 */ 0x2D,
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/* 0x2E @ 46 */ 0x2E,
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/* 0x2F @ 47 */ 0x2F,
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/* 0x30 @ 48 */ 0x30,
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/* 0x31 @ 49 */ 0x31,
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/* 0x32 @ 50 */ 0x32,
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/* 0x33 @ 51 */ 0x33,
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/* 0x34 @ 52 */ 0x34,
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/* 0x35 @ 53 */ 0x35,
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/* 0x36 @ 54 */ 0x36,
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/* 0x37 @ 55 */ 0x37,
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/* 0x38 @ 56 */ 0x38,
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/* 0x39 @ 57 */ 0x39,
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/* 0x3A @ 58 */ 0x3A,
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/* 0x3B @ 59 */ 0x3B,
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/* 0x3C @ 60 */ 0x3C,
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/* 0x3D @ 61 */ 0x3D,
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/* 0x3E @ 62 */ 0x3E,
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/* 0x3F @ 63 */ 0x3F,
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/* 0x40 @ 64 */ 0x40,
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/* 0x41 @ 65 */ 0x41,
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/* 0x42 @ 66 */ 0x42,
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/* 0x43 @ 67 */ 0x43,
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/* 0x44 @ 68 */ 0x44,
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/* 0x45 @ 69 */ 0x45,
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/* 0x46 @ 70 */ 0x46,
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/* 0x47 @ 71 */ 0x47,
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/* 0x48 @ 72 */ 0x48,
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/* 0x49 @ 73 */ 0x49,
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/* 0x4A @ 74 */ 0x4A,
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/* 0x4B @ 75 */ 0x4B,
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/* 0x4C @ 76 */ 0x4C,
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/* 0x4D @ 77 */ 0x4D,
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/* 0x4E @ 78 */ 0x4E,
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/* 0x4F @ 79 */ 0x4F,
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/* 0x50 @ 80 */ 0x50,
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/* 0x51 @ 81 */ 0x51,
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/* 0x52 @ 82 */ 0x52,
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/* 0x53 @ 83 */ 0x53,
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/* 0x54 @ 84 */ 0x54,
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/* 0x55 @ 85 */ 0x55,
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/* 0x56 @ 86 */ 0x56,
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/* 0x57 @ 87 */ 0x57,
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/* 0x58 @ 88 */ 0x58,
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/* 0x59 @ 89 */ 0x59,
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/* 0x5A @ 90 */ 0x5A,
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/* 0x5B @ 91 */ 0x5B,
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/* 0x5C @ 92 */ 0x5C,
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/* 0x5D @ 93 */ 0x5D,
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/* 0x5E @ 94 */ 0x5E,
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/* 0x5F @ 95 */ 0x5F,
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/* 0x60 @ 96 */ 0x60,
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/* 0x61 @ 97 */ 0x61,
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/* 0x62 @ 98 */ 0x62,
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/* 0x63 @ 99 */ 0x63,
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/* 0x64 @ 100 */ 0x64,
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/* 0x65 @ 101 */ 0x65,
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/* 0x66 @ 102 */ 0x66,
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/* 0x67 @ 103 */ 0x67,
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/* 0x68 @ 104 */ 0x68,
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/* 0x69 @ 105 */ 0x69,
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/* 0x6A @ 106 */ 0x6A,
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/* 0x6B @ 107 */ 0x6B,
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/* 0x6C @ 108 */ 0x6C,
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/* 0x6D @ 109 */ 0x6D,
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/* 0x6E @ 110 */ 0x6E,
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/* 0x6F @ 111 */ 0x6F,
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/* 0x70 @ 112 */ 0x70,
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/* 0x71 @ 113 */ 0x71,
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/* 0x72 @ 114 */ 0x72,
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/* 0x73 @ 115 */ 0x73,
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/* 0x74 @ 116 */ 0x74,
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/* 0x75 @ 117 */ 0x75,
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/* 0x76 @ 118 */ 0x76,
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/* 0x77 @ 119 */ 0x77,
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/* 0x78 @ 120 */ 0x78,
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/* 0x79 @ 121 */ 0x79,
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/* 0x7A @ 122 */ 0x7A,
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/* 0x7B @ 123 */ 0x7B,
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/* 0x7C @ 124 */ 0x7C,
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/* 0x7D @ 125 */ 0x7D,
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/* 0x7E @ 126 */ 0x7E,
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/* 0x7F @ 127 */ 0x7F,
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/* 0x80 @ 128 */ 0xE2, 0x82, 0xAC,
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/* 0x81 @ 131 */ 0xEF, 0xBF, 0xBD,
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/* 0x82 @ 134 */ 0xE2, 0x80, 0x9A,
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/* 0x83 @ 137 */ 0xC6, 0x92,
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/* 0x84 @ 139 */ 0xE2, 0x80, 0x9E,
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/* 0x85 @ 142 */ 0xE2, 0x80, 0xA6,
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/* 0x86 @ 145 */ 0xE2, 0x80, 0xA0,
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/* 0x87 @ 148 */ 0xE2, 0x80, 0xA1,
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/* 0x88 @ 151 */ 0xCB, 0x86,
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/* 0x89 @ 153 */ 0xE2, 0x80, 0xB0,
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/* 0x8A @ 156 */ 0xC5, 0xA0,
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/* 0x8B @ 158 */ 0xE2, 0x80, 0xB9,
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/* 0x8C @ 161 */ 0xC5, 0x92,
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/* 0x8D @ 163 */ 0xEF, 0xBF, 0xBD,
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/* 0x8E @ 166 */ 0xC5, 0xBD,
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/* 0x8F @ 168 */ 0xEF, 0xBF, 0xBD,
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/* 0x90 @ 171 */ 0xEF, 0xBF, 0xBD,
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/* 0x91 @ 174 */ 0xE2, 0x80, 0x98,
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/* 0x92 @ 177 */ 0xE2, 0x80, 0x99,
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/* 0x93 @ 180 */ 0xE2, 0x80, 0x9C,
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/* 0x94 @ 183 */ 0xE2, 0x80, 0x9D,
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/* 0x95 @ 186 */ 0xE2, 0x80, 0xA2,
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/* 0x96 @ 189 */ 0xE2, 0x80, 0x93,
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/* 0x97 @ 192 */ 0xE2, 0x80, 0x94,
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/* 0x98 @ 195 */ 0xCB, 0x9C,
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/* 0x99 @ 197 */ 0xE2, 0x84, 0xA2,
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/* 0x9A @ 200 */ 0xC5, 0xA1,
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/* 0x9B @ 202 */ 0xE2, 0x80, 0xBA,
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/* 0x9C @ 205 */ 0xC5, 0x93,
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/* 0x9D @ 207 */ 0xEF, 0xBF, 0xBD,
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/* 0x9E @ 210 */ 0xC5, 0xBE,
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/* 0x9F @ 212 */ 0xC5, 0xB8,
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/* 0xA0 @ 214 */ 0xC2, 0xA0,
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/* 0xA1 @ 216 */ 0xC2, 0xA1,
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/* 0xA2 @ 218 */ 0xC2, 0xA2,
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/* 0xA3 @ 220 */ 0xC2, 0xA3,
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/* 0xA4 @ 222 */ 0xC2, 0xA4,
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/* 0xA5 @ 224 */ 0xC2, 0xA5,
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/* 0xA6 @ 226 */ 0xC2, 0xA6,
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/* 0xA7 @ 228 */ 0xC2, 0xA7,
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/* 0xA8 @ 230 */ 0xC2, 0xA8,
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/* 0xA9 @ 232 */ 0xC2, 0xA9,
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/* 0xAA @ 234 */ 0xC2, 0xAA,
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/* 0xAB @ 236 */ 0xC2, 0xAB,
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/* 0xAC @ 238 */ 0xC2, 0xAC,
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/* 0xAD @ 240 */ 0xC2, 0xAD,
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/* 0xAE @ 242 */ 0xC2, 0xAE,
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/* 0xAF @ 244 */ 0xC2, 0xAF,
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/* 0xB0 @ 246 */ 0xC2, 0xB0,
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/* 0xB1 @ 248 */ 0xC2, 0xB1,
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/* 0xB2 @ 250 */ 0xC2, 0xB2,
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/* 0xB3 @ 252 */ 0xC2, 0xB3,
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/* 0xB4 @ 254 */ 0xC2, 0xB4,
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/* 0xB5 @ 256 */ 0xC2, 0xB5,
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/* 0xB6 @ 258 */ 0xC2, 0xB6,
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/* 0xB7 @ 260 */ 0xC2, 0xB7,
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/* 0xB8 @ 262 */ 0xC2, 0xB8,
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/* 0xB9 @ 264 */ 0xC2, 0xB9,
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/* 0xBA @ 266 */ 0xC2, 0xBA,
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/* 0xBB @ 268 */ 0xC2, 0xBB,
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/* 0xBC @ 270 */ 0xC2, 0xBC,
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/* 0xBD @ 272 */ 0xC2, 0xBD,
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/* 0xBE @ 274 */ 0xC2, 0xBE,
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/* 0xBF @ 276 */ 0xC2, 0xBF,
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/* 0xC0 @ 278 */ 0xC3, 0x80,
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/* 0xC1 @ 280 */ 0xC3, 0x81,
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/* 0xC2 @ 282 */ 0xC3, 0x82,
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/* 0xC3 @ 284 */ 0xC3, 0x83,
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/* 0xC4 @ 286 */ 0xC3, 0x84,
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/* 0xC5 @ 288 */ 0xC3, 0x85,
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/* 0xC6 @ 290 */ 0xC3, 0x86,
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/* 0xC7 @ 292 */ 0xC3, 0x87,
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/* 0xC8 @ 294 */ 0xC3, 0x88,
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/* 0xC9 @ 296 */ 0xC3, 0x89,
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/* 0xCA @ 298 */ 0xC3, 0x8A,
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/* 0xCB @ 300 */ 0xC3, 0x8B,
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/* 0xCC @ 302 */ 0xC3, 0x8C,
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/* 0xCD @ 304 */ 0xC3, 0x8D,
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/* 0xCE @ 306 */ 0xC3, 0x8E,
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/* 0xCF @ 308 */ 0xC3, 0x8F,
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/* 0xD0 @ 310 */ 0xC3, 0x90,
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/* 0xD1 @ 312 */ 0xC3, 0x91,
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/* 0xD2 @ 314 */ 0xC3, 0x92,
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/* 0xD3 @ 316 */ 0xC3, 0x93,
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/* 0xD4 @ 318 */ 0xC3, 0x94,
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/* 0xD5 @ 320 */ 0xC3, 0x95,
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/* 0xD6 @ 322 */ 0xC3, 0x96,
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/* 0xD7 @ 324 */ 0xC3, 0x97,
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/* 0xD8 @ 326 */ 0xC3, 0x98,
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/* 0xD9 @ 328 */ 0xC3, 0x99,
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/* 0xDA @ 330 */ 0xC3, 0x9A,
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/* 0xDB @ 332 */ 0xC3, 0x9B,
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/* 0xDC @ 334 */ 0xC3, 0x9C,
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/* 0xDD @ 336 */ 0xC3, 0x9D,
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/* 0xDE @ 338 */ 0xC3, 0x9E,
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/* 0xDF @ 340 */ 0xC3, 0x9F,
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/* 0xE0 @ 342 */ 0xC3, 0xA0,
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/* 0xE1 @ 344 */ 0xC3, 0xA1,
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/* 0xE2 @ 346 */ 0xC3, 0xA2,
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/* 0xE3 @ 348 */ 0xC3, 0xA3,
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/* 0xE4 @ 350 */ 0xC3, 0xA4,
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/* 0xE5 @ 352 */ 0xC3, 0xA5,
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/* 0xE6 @ 354 */ 0xC3, 0xA6,
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/* 0xE7 @ 356 */ 0xC3, 0xA7,
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/* 0xE8 @ 358 */ 0xC3, 0xA8,
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/* 0xE9 @ 360 */ 0xC3, 0xA9,
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/* 0xEA @ 362 */ 0xC3, 0xAA,
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/* 0xEB @ 364 */ 0xC3, 0xAB,
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/* 0xEC @ 366 */ 0xC3, 0xAC,
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/* 0xED @ 368 */ 0xC3, 0xAD,
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/* 0xEE @ 370 */ 0xC3, 0xAE,
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/* 0xEF @ 372 */ 0xC3, 0xAF,
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/* 0xF0 @ 374 */ 0xC3, 0xB0,
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/* 0xF1 @ 376 */ 0xC3, 0xB1,
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/* 0xF2 @ 378 */ 0xC3, 0xB2,
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/* 0xF3 @ 380 */ 0xC3, 0xB3,
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/* 0xF4 @ 382 */ 0xC3, 0xB4,
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/* 0xF5 @ 384 */ 0xC3, 0xB5,
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/* 0xF6 @ 386 */ 0xC3, 0xB6,
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/* 0xF7 @ 388 */ 0xC3, 0xB7,
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/* 0xF8 @ 390 */ 0xC3, 0xB8,
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/* 0xF9 @ 392 */ 0xC3, 0xB9,
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/* 0xFA @ 394 */ 0xC3, 0xBA,
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/* 0xFB @ 396 */ 0xC3, 0xBB,
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/* 0xFC @ 398 */ 0xC3, 0xBC,
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/* 0xFD @ 400 */ 0xC3, 0xBD,
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/* 0xFE @ 402 */ 0xC3, 0xBE,
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/* 0xFF @ 404 */ 0xC3, 0xBF,
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};
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static const uint16_t tblofs[257] = {
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/* 0x00 */ 0, 1, 2, 3, 4, 5, 6, 7,
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/* 0x08 */ 8, 9, 10, 11, 12, 13, 14, 15,
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/* 0x10 */ 16, 17, 18, 19, 20, 21, 22, 23,
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/* 0x18 */ 24, 25, 26, 27, 28, 29, 30, 31,
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/* 0x20 */ 32, 33, 34, 35, 36, 37, 38, 39,
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/* 0x28 */ 40, 41, 42, 43, 44, 45, 46, 47,
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/* 0x30 */ 48, 49, 50, 51, 52, 53, 54, 55,
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/* 0x38 */ 56, 57, 58, 59, 60, 61, 62, 63,
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/* 0x40 */ 64, 65, 66, 67, 68, 69, 70, 71,
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/* 0x48 */ 72, 73, 74, 75, 76, 77, 78, 79,
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/* 0x50 */ 80, 81, 82, 83, 84, 85, 86, 87,
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/* 0x58 */ 88, 89, 90, 91, 92, 93, 94, 95,
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/* 0x60 */ 96, 97, 98, 99, 100, 101, 102, 103,
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/* 0x68 */ 104, 105, 106, 107, 108, 109, 110, 111,
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/* 0x70 */ 112, 113, 114, 115, 116, 117, 118, 119,
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/* 0x78 */ 120, 121, 122, 123, 124, 125, 126, 127,
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/* 0x80 */ 128, 131, 134, 137, 139, 142, 145, 148,
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/* 0x88 */ 151, 153, 156, 158, 161, 163, 166, 168,
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/* 0x90 */ 171, 174, 177, 180, 183, 186, 189, 192,
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/* 0x98 */ 195, 197, 200, 202, 205, 207, 210, 212,
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/* 0xA0 */ 214, 216, 218, 220, 222, 224, 226, 228,
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/* 0xA8 */ 230, 232, 234, 236, 238, 240, 242, 244,
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/* 0xB0 */ 246, 248, 250, 252, 254, 256, 258, 260,
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/* 0xB8 */ 262, 264, 266, 268, 270, 272, 274, 276,
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/* 0xC0 */ 278, 280, 282, 284, 286, 288, 290, 292,
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/* 0xC8 */ 294, 296, 298, 300, 302, 304, 306, 308,
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/* 0xD0 */ 310, 312, 314, 316, 318, 320, 322, 324,
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/* 0xD8 */ 326, 328, 330, 332, 334, 336, 338, 340,
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/* 0xE0 */ 342, 344, 346, 348, 350, 352, 354, 356,
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/* 0xE8 */ 358, 360, 362, 364, 366, 368, 370, 372,
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/* 0xF0 */ 374, 376, 378, 380, 382, 384, 386, 388,
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/* 0xF8 */ 390, 392, 394, 396, 398, 400, 402, 404,
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/* sizeof (cp1252_utf8) */ 406
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};
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/* Check if a string qualifies as UTF-8. */
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static int
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is_utf8(const char* src)
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{
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uint8_t ch;
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size_t i;
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const uint8_t* s = (const uint8_t*) src;
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/* We make a loop over every character, until we find a null one.
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Remember: The string is supposed to end with a NUL, so ahead checks are safe. */
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while ((ch = *s++)) {
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/* Ye olde 7bit ASCII chars 'rr fine for anything */
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if(ch < 0x80) continue;
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/* Now, we watch out for non-UTF conform sequences. */
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else if ((ch < 0xC2) || (ch > 0xFD))
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return 0;
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/* check for some misformed sequences */
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if (((ch == 0xC2) && (s[0] < 0xA0)) ||
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((ch == 0xEF) && (s[0] == 0xBF) && (s[1] > 0xBD)))
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/* XXX add more for outside the BMP */
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return 0;
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/* Check the continuation bytes. */
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if (ch < 0xE0) i = 1;
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else if (ch < 0xF0) i = 2;
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else if (ch < 0xF8) i = 3;
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else if (ch < 0xFC) i = 4;
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else
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i = 5;
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while (i--)
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if ((*s++ & 0xC0) != 0x80)
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return 0;
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}
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/* If no check failed, the string indeed looks like valid UTF-8. */
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return 1;
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}
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/* The main conversion routine.
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ICY in CP-1252 (or UTF-8 alreay) to UTF-8 encoded string.
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If force is applied, it will always encode to UTF-8, without checking. */
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char *
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icy2utf8(const char *src, int force)
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{
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const uint8_t *s = (const uint8_t *)src;
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size_t srclen, dstlen, i, k;
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uint8_t ch, *d;
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char *dst;
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/* Some funny streams from Apple/iTunes give ICY info in UTF-8 already.
|
|
So, be prepared and don't try to re-encode such. Unless forced. */
|
|
if(!force && is_utf8(src)) return (strdup(src));
|
|
|
|
srclen = strlen(src) + 1;
|
|
/* allocate conservatively */
|
|
if ((d = malloc(srclen * 3)) == NULL)
|
|
return (NULL);
|
|
|
|
i = 0;
|
|
dstlen = 0;
|
|
while (i < srclen) {
|
|
ch = s[i++];
|
|
k = tblofs[ch];
|
|
while (k < tblofs[ch + 1])
|
|
d[dstlen++] = cp1252_utf8[k++];
|
|
}
|
|
|
|
/* dstlen includes trailing NUL since srclen also does */
|
|
if ((dst = realloc(d, dstlen)) == NULL) {
|
|
free(d);
|
|
return (NULL);
|
|
}
|
|
return (dst);
|
|
}
|
|
|
|
/* This stuff is for testing only. */
|
|
#ifdef TEST
|
|
static const char intext[] = "\225 Gr\374\337e kosten 0,55 \200\205";
|
|
|
|
#include <stdio.h>
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
char *t, *t2;
|
|
|
|
if ((t = icy2utf8(intext, 0)) == NULL) {
|
|
fprintf(stderr, "out of memory\n");
|
|
return (1);
|
|
}
|
|
|
|
/* make sure it won't be converted twice */
|
|
if ((t2 = icy2utf8(t), 0) == NULL) {
|
|
fprintf(stderr, "out of memory\n");
|
|
return (1);
|
|
}
|
|
|
|
printf("Result is:\t\343\200\214%s\343\200\215\n"
|
|
"\t\t\343\200\214%s\343\200\215\n", t, t2);
|
|
|
|
free(t);
|
|
free(t2);
|
|
return (0);
|
|
}
|
|
#endif
|