// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
//
// Copyright 2014 The Go-MySQL-Driver Authors. All rights reserved.
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.

package mysql

const defaultCollation = "utf8_general_ci"

// A list of available collations mapped to the internal ID.
// To update this map use the following MySQL query:
//     SELECT COLLATION_NAME, ID FROM information_schema.COLLATIONS
var collations = map[string]byte{
	"big5_chinese_ci":          1,
	"latin2_czech_cs":          2,
	"dec8_swedish_ci":          3,
	"cp850_general_ci":         4,
	"latin1_german1_ci":        5,
	"hp8_english_ci":           6,
	"koi8r_general_ci":         7,
	"latin1_swedish_ci":        8,
	"latin2_general_ci":        9,
	"swe7_swedish_ci":          10,
	"ascii_general_ci":         11,
	"ujis_japanese_ci":         12,
	"sjis_japanese_ci":         13,
	"cp1251_bulgarian_ci":      14,
	"latin1_danish_ci":         15,
	"hebrew_general_ci":        16,
	"tis620_thai_ci":           18,
	"euckr_korean_ci":          19,
	"latin7_estonian_cs":       20,
	"latin2_hungarian_ci":      21,
	"koi8u_general_ci":         22,
	"cp1251_ukrainian_ci":      23,
	"gb2312_chinese_ci":        24,
	"greek_general_ci":         25,
	"cp1250_general_ci":        26,
	"latin2_croatian_ci":       27,
	"gbk_chinese_ci":           28,
	"cp1257_lithuanian_ci":     29,
	"latin5_turkish_ci":        30,
	"latin1_german2_ci":        31,
	"armscii8_general_ci":      32,
	"utf8_general_ci":          33,
	"cp1250_czech_cs":          34,
	"ucs2_general_ci":          35,
	"cp866_general_ci":         36,
	"keybcs2_general_ci":       37,
	"macce_general_ci":         38,
	"macroman_general_ci":      39,
	"cp852_general_ci":         40,
	"latin7_general_ci":        41,
	"latin7_general_cs":        42,
	"macce_bin":                43,
	"cp1250_croatian_ci":       44,
	"utf8mb4_general_ci":       45,
	"utf8mb4_bin":              46,
	"latin1_bin":               47,
	"latin1_general_ci":        48,
	"latin1_general_cs":        49,
	"cp1251_bin":               50,
	"cp1251_general_ci":        51,
	"cp1251_general_cs":        52,
	"macroman_bin":             53,
	"utf16_general_ci":         54,
	"utf16_bin":                55,
	"utf16le_general_ci":       56,
	"cp1256_general_ci":        57,
	"cp1257_bin":               58,
	"cp1257_general_ci":        59,
	"utf32_general_ci":         60,
	"utf32_bin":                61,
	"utf16le_bin":              62,
	"binary":                   63,
	"armscii8_bin":             64,
	"ascii_bin":                65,
	"cp1250_bin":               66,
	"cp1256_bin":               67,
	"cp866_bin":                68,
	"dec8_bin":                 69,
	"greek_bin":                70,
	"hebrew_bin":               71,
	"hp8_bin":                  72,
	"keybcs2_bin":              73,
	"koi8r_bin":                74,
	"koi8u_bin":                75,
	"latin2_bin":               77,
	"latin5_bin":               78,
	"latin7_bin":               79,
	"cp850_bin":                80,
	"cp852_bin":                81,
	"swe7_bin":                 82,
	"utf8_bin":                 83,
	"big5_bin":                 84,
	"euckr_bin":                85,
	"gb2312_bin":               86,
	"gbk_bin":                  87,
	"sjis_bin":                 88,
	"tis620_bin":               89,
	"ucs2_bin":                 90,
	"ujis_bin":                 91,
	"geostd8_general_ci":       92,
	"geostd8_bin":              93,
	"latin1_spanish_ci":        94,
	"cp932_japanese_ci":        95,
	"cp932_bin":                96,
	"eucjpms_japanese_ci":      97,
	"eucjpms_bin":              98,
	"cp1250_polish_ci":         99,
	"utf16_unicode_ci":         101,
	"utf16_icelandic_ci":       102,
	"utf16_latvian_ci":         103,
	"utf16_romanian_ci":        104,
	"utf16_slovenian_ci":       105,
	"utf16_polish_ci":          106,
	"utf16_estonian_ci":        107,
	"utf16_spanish_ci":         108,
	"utf16_swedish_ci":         109,
	"utf16_turkish_ci":         110,
	"utf16_czech_ci":           111,
	"utf16_danish_ci":          112,
	"utf16_lithuanian_ci":      113,
	"utf16_slovak_ci":          114,
	"utf16_spanish2_ci":        115,
	"utf16_roman_ci":           116,
	"utf16_persian_ci":         117,
	"utf16_esperanto_ci":       118,
	"utf16_hungarian_ci":       119,
	"utf16_sinhala_ci":         120,
	"utf16_german2_ci":         121,
	"utf16_croatian_ci":        122,
	"utf16_unicode_520_ci":     123,
	"utf16_vietnamese_ci":      124,
	"ucs2_unicode_ci":          128,
	"ucs2_icelandic_ci":        129,
	"ucs2_latvian_ci":          130,
	"ucs2_romanian_ci":         131,
	"ucs2_slovenian_ci":        132,
	"ucs2_polish_ci":           133,
	"ucs2_estonian_ci":         134,
	"ucs2_spanish_ci":          135,
	"ucs2_swedish_ci":          136,
	"ucs2_turkish_ci":          137,
	"ucs2_czech_ci":            138,
	"ucs2_danish_ci":           139,
	"ucs2_lithuanian_ci":       140,
	"ucs2_slovak_ci":           141,
	"ucs2_spanish2_ci":         142,
	"ucs2_roman_ci":            143,
	"ucs2_persian_ci":          144,
	"ucs2_esperanto_ci":        145,
	"ucs2_hungarian_ci":        146,
	"ucs2_sinhala_ci":          147,
	"ucs2_german2_ci":          148,
	"ucs2_croatian_ci":         149,
	"ucs2_unicode_520_ci":      150,
	"ucs2_vietnamese_ci":       151,
	"ucs2_general_mysql500_ci": 159,
	"utf32_unicode_ci":         160,
	"utf32_icelandic_ci":       161,
	"utf32_latvian_ci":         162,
	"utf32_romanian_ci":        163,
	"utf32_slovenian_ci":       164,
	"utf32_polish_ci":          165,
	"utf32_estonian_ci":        166,
	"utf32_spanish_ci":         167,
	"utf32_swedish_ci":         168,
	"utf32_turkish_ci":         169,
	"utf32_czech_ci":           170,
	"utf32_danish_ci":          171,
	"utf32_lithuanian_ci":      172,
	"utf32_slovak_ci":          173,
	"utf32_spanish2_ci":        174,
	"utf32_roman_ci":           175,
	"utf32_persian_ci":         176,
	"utf32_esperanto_ci":       177,
	"utf32_hungarian_ci":       178,
	"utf32_sinhala_ci":         179,
	"utf32_german2_ci":         180,
	"utf32_croatian_ci":        181,
	"utf32_unicode_520_ci":     182,
	"utf32_vietnamese_ci":      183,
	"utf8_unicode_ci":          192,
	"utf8_icelandic_ci":        193,
	"utf8_latvian_ci":          194,
	"utf8_romanian_ci":         195,
	"utf8_slovenian_ci":        196,
	"utf8_polish_ci":           197,
	"utf8_estonian_ci":         198,
	"utf8_spanish_ci":          199,
	"utf8_swedish_ci":          200,
	"utf8_turkish_ci":          201,
	"utf8_czech_ci":            202,
	"utf8_danish_ci":           203,
	"utf8_lithuanian_ci":       204,
	"utf8_slovak_ci":           205,
	"utf8_spanish2_ci":         206,
	"utf8_roman_ci":            207,
	"utf8_persian_ci":          208,
	"utf8_esperanto_ci":        209,
	"utf8_hungarian_ci":        210,
	"utf8_sinhala_ci":          211,
	"utf8_german2_ci":          212,
	"utf8_croatian_ci":         213,
	"utf8_unicode_520_ci":      214,
	"utf8_vietnamese_ci":       215,
	"utf8_general_mysql500_ci": 223,
	"utf8mb4_unicode_ci":       224,
	"utf8mb4_icelandic_ci":     225,
	"utf8mb4_latvian_ci":       226,
	"utf8mb4_romanian_ci":      227,
	"utf8mb4_slovenian_ci":     228,
	"utf8mb4_polish_ci":        229,
	"utf8mb4_estonian_ci":      230,
	"utf8mb4_spanish_ci":       231,
	"utf8mb4_swedish_ci":       232,
	"utf8mb4_turkish_ci":       233,
	"utf8mb4_czech_ci":         234,
	"utf8mb4_danish_ci":        235,
	"utf8mb4_lithuanian_ci":    236,
	"utf8mb4_slovak_ci":        237,
	"utf8mb4_spanish2_ci":      238,
	"utf8mb4_roman_ci":         239,
	"utf8mb4_persian_ci":       240,
	"utf8mb4_esperanto_ci":     241,
	"utf8mb4_hungarian_ci":     242,
	"utf8mb4_sinhala_ci":       243,
	"utf8mb4_german2_ci":       244,
	"utf8mb4_croatian_ci":      245,
	"utf8mb4_unicode_520_ci":   246,
	"utf8mb4_vietnamese_ci":    247,
}

// A blacklist of collations which is unsafe to interpolate parameters.
// These multibyte encodings may contains 0x5c (`\`) in their trailing bytes.
var unsafeCollations = map[string]bool{
	"big5_chinese_ci":   true,
	"sjis_japanese_ci":  true,
	"gbk_chinese_ci":    true,
	"big5_bin":          true,
	"gb2312_bin":        true,
	"gbk_bin":           true,
	"sjis_bin":          true,
	"cp932_japanese_ci": true,
	"cp932_bin":         true,
}