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ebc3b3afac
Don't read character set files if we are using only the default charset. In most cases the user will not anymore get a warning about missing character set files Compare strings with space extend instead of space strip. Now the following comparisons holds: "a" == "a " and "a\t" < "a". (Bug #3152). Note: Because of the above fix, one has to do a REPAIR on any table that has an ascii character < 32 last in a CHAR/VARCHAR/TEXT columns.
528 lines
18 KiB
C
528 lines
18 KiB
C
/* Copyright (C) 2000 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <my_global.h>
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#include "m_string.h"
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#include "m_ctype.h"
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static uint16 latin1_uni[256]={
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0,0x0001,0x0002,0x0003,0x0004,0x0005,0x0006,0x0007,
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0x0008,0x0009,0x000A,0x000B,0x000C,0x000D,0x000E,0x000F,
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0x0010,0x0011,0x0012,0x0013,0x0014,0x0015,0x0016,0x0017,
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0x0018,0x0019,0x001A,0x001B,0x001C,0x001D,0x001E,0x001F,
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0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,
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0x0028,0x0029,0x002A,0x002B,0x002C,0x002D,0x002E,0x002F,
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0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,
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0x0038,0x0039,0x003A,0x003B,0x003C,0x003D,0x003E,0x003F,
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0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
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0x0048,0x0049,0x004A,0x004B,0x004C,0x004D,0x004E,0x004F,
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0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,
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0x0058,0x0059,0x005A,0x005B,0x005C,0x005D,0x005E,0x005F,
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0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
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0x0068,0x0069,0x006A,0x006B,0x006C,0x006D,0x006E,0x006F,
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0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
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0x0078,0x0079,0x007A,0x007B,0x007C,0x007D,0x007E, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0,
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0x00A0,0x00A1,0x00A2,0x00A3,0x00A4,0x00A5,0x00A6,0x00A7,
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0x00A8,0x00A9,0x00AA,0x00AB,0x00AC,0x00AD,0x00AE,0x00AF,
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0x00B0,0x00B1,0x00B2,0x00B3,0x00B4,0x00B5,0x00B6,0x00B7,
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0x00B8,0x00B9,0x00BA,0x00BB,0x00BC,0x00BD,0x00BE,0x00BF,
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0x00C0,0x00C1,0x00C2,0x00C3,0x00C4,0x00C5,0x00C6,0x00C7,
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0x00C8,0x00C9,0x00CA,0x00CB,0x00CC,0x00CD,0x00CE,0x00CF,
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0x00D0,0x00D1,0x00D2,0x00D3,0x00D4,0x00D5,0x00D6,0x00D7,
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0x00D8,0x00D9,0x00DA,0x00DB,0x00DC,0x00DD,0x00DE,0x00DF,
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0x00E0,0x00E1,0x00E2,0x00E3,0x00E4,0x00E5,0x00E6,0x00E7,
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0x00E8,0x00E9,0x00EA,0x00EB,0x00EC,0x00ED,0x00EE,0x00EF,
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0x00F0,0x00F1,0x00F2,0x00F3,0x00F4,0x00F5,0x00F6,0x00F7,
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0x00F8,0x00F9,0x00FA,0x00FB,0x00FC,0x00FD,0x00FE,0x00FF
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};
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static uchar uni_latin1[]={
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0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0A,0x0B,0x0C,0x0D,0x0E,0x0F,
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0x10,0x11,0x12,0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,
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0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,0x2D,0x2E,0x2F,
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0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,
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0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,0x4D,0x4E,0x4F,
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0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5A,0x5B,0x5C,0x5D,0x5E,0x5F,
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0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,0x6B,0x6C,0x6D,0x6E,0x6F,
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0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A,0x7B,0x7C,0x7D,0x7E,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0xA0,0xA1,0xA2,0xA3,0xA4,0xA5,0xA6,0xA7,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,
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0xB0,0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB7,0xB8,0xB9,0xBA,0xBB,0xBC,0xBD,0xBE,0xBF,
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0xC0,0xC1,0xC2,0xC3,0xC4,0xC5,0xC6,0xC7,0xC8,0xC9,0xCA,0xCB,0xCC,0xCD,0xCE,0xCF,
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0xD0,0xD1,0xD2,0xD3,0xD4,0xD5,0xD6,0xD7,0xD8,0xD9,0xDA,0xDB,0xDC,0xDD,0xDE,0xDF,
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0xE0,0xE1,0xE2,0xE3,0xE4,0xE5,0xE6,0xE7,0xE8,0xE9,0xEA,0xEB,0xEC,0xED,0xEE,0xEF,
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0xF0,0xF1,0xF2,0xF3,0xF4,0xF5,0xF6,0xF7,0xF8,0xF9,0xFA,0xFB,0xFC,0xFD,0xFE,0xFF};
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static uchar ctype_latin1[] = {
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0,
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32, 32, 32, 32, 32, 32, 32, 32, 32, 40, 40, 40, 40, 40, 32, 32,
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32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32,
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72, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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132,132,132,132,132,132,132,132,132,132, 16, 16, 16, 16, 16, 16,
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16,129,129,129,129,129,129, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 16, 16, 16, 16, 16,
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16,130,130,130,130,130,130, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 16, 16, 16, 16, 32,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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72, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 16, 1, 1, 1, 1, 1, 1, 1, 2,
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2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
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2, 2, 2, 2, 2, 2, 2, 16, 2, 2, 2, 2, 2, 2, 2, 2
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};
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static uchar to_lower_latin1[] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
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112,113,114,115,116,117,118,119,120,121,122, 91, 92, 93, 94, 95,
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96, 97, 98, 99,100,101,102,103,104,105,106,107,108,109,110,111,
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112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
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240,241,242,243,244,245,246,215,248,249,250,251,252,253,254,223,
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224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,
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240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255
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};
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static uchar to_upper_latin1[] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
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96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,123,124,125,126,127,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
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208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,
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192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,
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208,209,210,211,212,213,214,247,216,217,218,219,220,221,222,255
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};
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static uchar sort_order_latin1[] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
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96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,123,124,125,126,127,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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65, 65, 65, 65, 92, 91, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
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68, 78, 79, 79, 79, 79, 93,215,216, 85, 85, 85, 89, 89,222,223,
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65, 65, 65, 65, 92, 91, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
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68, 78, 79, 79, 79, 79, 93,247,216, 85, 85, 85, 89, 89,222,255
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};
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static
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int my_mb_wc_latin1(CHARSET_INFO *cs __attribute__((unused)),
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my_wc_t *wc,
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const unsigned char *str,
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const unsigned char *end)
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{
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if (str >= end)
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return MY_CS_TOOFEW(0);
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return ((wc[0]= latin1_uni[*str]) || (!str[0])) ? 1 : MY_CS_ILSEQ;
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}
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static
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int my_wc_mb_latin1(CHARSET_INFO *cs __attribute__((unused)),
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my_wc_t wc,
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unsigned char *str,
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unsigned char *end)
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{
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if (str >= end)
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return MY_CS_TOOSMALL;
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return ((wc < 256) && ((str[0]=uni_latin1[wc]) || (!wc))) ? 1 : MY_CS_ILUNI;
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}
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static MY_CHARSET_HANDLER my_charset_handler=
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{
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NULL,
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my_mbcharlen_8bit,
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my_numchars_8bit,
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my_charpos_8bit,
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my_well_formed_len_8bit,
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my_lengthsp_8bit,
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my_mb_wc_latin1,
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my_wc_mb_latin1,
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my_caseup_str_8bit,
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my_casedn_str_8bit,
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my_caseup_8bit,
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my_casedn_8bit,
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my_snprintf_8bit,
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my_long10_to_str_8bit,
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my_longlong10_to_str_8bit,
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my_fill_8bit,
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my_strntol_8bit,
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my_strntoul_8bit,
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my_strntoll_8bit,
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my_strntoull_8bit,
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my_strntod_8bit,
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my_scan_8bit
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};
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CHARSET_INFO my_charset_latin1=
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{
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8,0,0, /* number */
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MY_CS_COMPILED | MY_CS_PRIMARY, /* state */
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"latin1", /* cs name */
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"latin1_swedish_ci", /* name */
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"", /* comment */
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ctype_latin1,
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to_lower_latin1,
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to_upper_latin1,
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sort_order_latin1,
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latin1_uni, /* tab_to_uni */
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NULL, /* tab_from_uni */
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"","",
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1, /* strxfrm_multiply */
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1, /* mbminlen */
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1, /* mbmaxlen */
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0, /* min_sort_char */
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0, /* max_sort_char */
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&my_charset_handler,
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&my_collation_8bit_simple_ci_handler
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};
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/*
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* This file is the latin1 character set with German sorting
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*
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* The modern sort order is used, where:
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*
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* '<27>' -> "ae"
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* '<27>' -> "oe"
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* '<27>' -> "ue"
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* '<27>' -> "ss"
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*/
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/*
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* This is a simple latin1 mapping table, which maps all accented
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* characters to their non-accented equivalents. Note: in this
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* table, '<27>' is mapped to 'A', '<27>' is mapped to 'Y', etc. - all
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* accented characters except the following are treated the same way.
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* <20>, <20>, <20>, <20>, <20>, <20>
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*/
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static uchar sort_order_latin1_de[] = {
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
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16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
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32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
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48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
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64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
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96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
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80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,123,124,125,126,127,
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128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
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144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
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160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
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176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
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65, 65, 65, 65,196, 65, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
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68, 78, 79, 79, 79, 79,214,215,216, 85, 85, 85,220, 89,222,223,
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65, 65, 65, 65,196, 65, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
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68, 78, 79, 79, 79, 79,214,247,216, 85, 85, 85,220, 89,222, 89
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};
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/*
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same as sort_order_latin_de, but maps ALL accented chars to unaccented ones
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*/
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uchar combo1map[]={
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||
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
|
||
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
|
||
32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
|
||
48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63,
|
||
64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
|
||
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95,
|
||
96, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
|
||
80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90,123,124,125,126,127,
|
||
128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
|
||
144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,
|
||
160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,
|
||
176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,
|
||
65, 65, 65, 65, 65, 65, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
|
||
68, 78, 79, 79, 79, 79, 79,215,216, 85, 85, 85, 85, 89,222, 83,
|
||
65, 65, 65, 65, 65, 65, 92, 67, 69, 69, 69, 69, 73, 73, 73, 73,
|
||
68, 78, 79, 79, 79, 79, 79,247,216, 85, 85, 85, 85, 89,222, 89
|
||
};
|
||
|
||
uchar combo2map[]={
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,69, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0,69, 0, 0, 0, 0, 0,69, 0, 0,83, 0, 0, 0, 0,69, 0, 0, 0, 0, 0,
|
||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,69, 0, 0, 0, 0, 0,69, 0, 0, 0, 0
|
||
};
|
||
|
||
|
||
/*
|
||
Some notes about the following comparison rules:
|
||
By definition, my_strnncoll_latin_de must works exactly as if had called
|
||
my_strnxfrm_latin_de() on both strings and compared the result strings.
|
||
|
||
This means that:
|
||
<20> must also matches <20>E and A<>, because my_strxn_frm_latin_de() will convert
|
||
both to AE.
|
||
|
||
The other option would be to not do any accent removal in
|
||
sort_order_latin_de[] at all
|
||
*/
|
||
|
||
|
||
static int my_strnncoll_latin1_de(CHARSET_INFO *cs __attribute__((unused)),
|
||
const uchar *a, uint a_length,
|
||
const uchar *b, uint b_length)
|
||
{
|
||
const uchar *a_end= a + a_length;
|
||
const uchar *b_end= b + b_length;
|
||
uchar a_char, a_extend= 0, b_char, b_extend= 0;
|
||
|
||
while ((a < a_end || a_extend) && (b < b_end || b_extend))
|
||
{
|
||
if (a_extend)
|
||
{
|
||
a_char=a_extend; a_extend=0;
|
||
}
|
||
else
|
||
{
|
||
a_extend=combo2map[*a];
|
||
a_char=combo1map[*a++];
|
||
}
|
||
if (b_extend)
|
||
{
|
||
b_char=b_extend; b_extend=0;
|
||
}
|
||
else
|
||
{
|
||
b_extend=combo2map[*b];
|
||
b_char=combo1map[*b++];
|
||
}
|
||
if (a_char != b_char)
|
||
return (int) a_char - (int) b_char;
|
||
}
|
||
/*
|
||
A simple test of string lengths won't work -- we test to see
|
||
which string ran out first
|
||
*/
|
||
return ((a < a_end || a_extend) ? 1 :
|
||
(b < b_end || b_extend) ? -1 : 0);
|
||
}
|
||
|
||
|
||
static int my_strnncollsp_latin1_de(CHARSET_INFO *cs __attribute__((unused)),
|
||
const uchar *a, uint a_length,
|
||
const uchar *b, uint b_length)
|
||
{
|
||
const uchar *a_end= a + a_length;
|
||
const uchar *b_end= b + b_length;
|
||
uchar a_char, a_extend= 0, b_char, b_extend= 0;
|
||
|
||
while ((a < a_end || a_extend) && (b < b_end || b_extend))
|
||
{
|
||
if (a_extend)
|
||
{
|
||
a_char=a_extend;
|
||
a_extend= 0;
|
||
}
|
||
else
|
||
{
|
||
a_extend= combo2map[*a];
|
||
a_char= combo1map[*a++];
|
||
}
|
||
if (b_extend)
|
||
{
|
||
b_char= b_extend;
|
||
b_extend= 0;
|
||
}
|
||
else
|
||
{
|
||
b_extend= combo2map[*b];
|
||
b_char= combo1map[*b++];
|
||
}
|
||
if (a_char != b_char)
|
||
return (int) a_char - (int) b_char;
|
||
}
|
||
/* Check if double character last */
|
||
if (a_extend)
|
||
return 1;
|
||
if (b_extend)
|
||
return -1;
|
||
|
||
if (a != a_end || b != b_end)
|
||
{
|
||
int swap= 0;
|
||
/*
|
||
Check the next not space character of the longer key. If it's < ' ',
|
||
then it's smaller than the other key.
|
||
*/
|
||
if (a == a_end)
|
||
{
|
||
/* put shorter key in a */
|
||
a_end= b_end;
|
||
a= b;
|
||
swap= -1; /* swap sign of result */
|
||
}
|
||
for ( ; a < a_end ; a++)
|
||
{
|
||
if (*a != ' ')
|
||
return ((int) *a - (int) ' ') ^ swap;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
|
||
static int my_strnxfrm_latin1_de(CHARSET_INFO *cs __attribute__((unused)),
|
||
uchar * dest, uint len,
|
||
const uchar * src, uint srclen)
|
||
{
|
||
const uchar *dest_orig = dest;
|
||
const uchar *de = dest + len;
|
||
const uchar *se = src + srclen;
|
||
for ( ; src < se && dest < de ; src++)
|
||
{
|
||
uchar chr=combo1map[*src];
|
||
*dest++=chr;
|
||
if ((chr=combo2map[*src]) && dest < de)
|
||
*dest++=chr;
|
||
}
|
||
return (int) (dest - dest_orig);
|
||
}
|
||
|
||
|
||
void my_hash_sort_latin1_de(CHARSET_INFO *cs __attribute__((unused)),
|
||
const uchar *key, uint len,
|
||
ulong *nr1, ulong *nr2)
|
||
{
|
||
const uchar *end= key+len;
|
||
/*
|
||
Remove end space. We have to do this to be able to compare
|
||
'AE' and '<27>' as identical
|
||
*/
|
||
while (end > key && end[-1] == ' ')
|
||
end--;
|
||
|
||
for (; key < end ; key++)
|
||
{
|
||
uint X= (uint) combo1map[(uint) *key];
|
||
nr1[0]^=(ulong) ((((uint) nr1[0] & 63)+nr2[0]) * X) + (nr1[0] << 8);
|
||
nr2[0]+=3;
|
||
if ((X= combo2map[*key]))
|
||
{
|
||
nr1[0]^=(ulong) ((((uint) nr1[0] & 63)+nr2[0]) * X) + (nr1[0] << 8);
|
||
nr2[0]+=3;
|
||
}
|
||
}
|
||
}
|
||
|
||
|
||
static MY_COLLATION_HANDLER my_collation_german2_ci_handler=
|
||
{
|
||
my_strnncoll_latin1_de,
|
||
my_strnncollsp_latin1_de,
|
||
my_strnxfrm_latin1_de,
|
||
my_like_range_simple,
|
||
my_wildcmp_8bit,
|
||
my_strcasecmp_8bit,
|
||
my_instr_simple,
|
||
my_hash_sort_latin1_de
|
||
};
|
||
|
||
|
||
CHARSET_INFO my_charset_latin1_german2_ci=
|
||
{
|
||
31,0,0, /* number */
|
||
MY_CS_COMPILED|MY_CS_STRNXFRM, /* state */
|
||
"latin1", /* cs name */
|
||
"latin1_german2_ci", /* name */
|
||
"", /* comment */
|
||
ctype_latin1,
|
||
to_lower_latin1,
|
||
to_upper_latin1,
|
||
sort_order_latin1_de,
|
||
latin1_uni, /* tab_to_uni */
|
||
NULL, /* tab_from_uni */
|
||
"","",
|
||
2, /* strxfrm_multiply */
|
||
1, /* mbminlen */
|
||
1, /* mbmaxlen */
|
||
0, /* min_sort_char */
|
||
0, /* max_sort_char */
|
||
&my_charset_handler,
|
||
&my_collation_german2_ci_handler
|
||
};
|
||
|
||
|
||
CHARSET_INFO my_charset_latin1_bin=
|
||
{
|
||
47,0,0, /* number */
|
||
MY_CS_COMPILED|MY_CS_BINSORT, /* state */
|
||
"latin1", /* cs name */
|
||
"latin1_bin", /* name */
|
||
"", /* comment */
|
||
ctype_latin1,
|
||
to_lower_latin1,
|
||
to_upper_latin1,
|
||
sort_order_latin1_de,
|
||
latin1_uni, /* tab_to_uni */
|
||
NULL, /* tab_from_uni */
|
||
"",
|
||
"",
|
||
1, /* strxfrm_multiply */
|
||
1, /* mbminlen */
|
||
1, /* mbmaxlen */
|
||
0, /* min_sort_char */
|
||
0, /* max_sort_char */
|
||
&my_charset_handler,
|
||
&my_collation_8bit_bin_handler
|
||
};
|
||
|