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7a8fe9eb37
Improve BuildCaseInsensitiveLike with lowercase, users are more likely to input lowercase letters, so lowercase letters are used. --------- Signed-off-by: Tyrone Yeh <siryeh@gmail.com> Co-authored-by: silverwind <me@silverwind.io> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
// Copyright 2022 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package db
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import (
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"strings"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/util"
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"xorm.io/builder"
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)
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// BuildCaseInsensitiveLike returns a case-insensitive LIKE condition for the given key and value.
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// Cast the search value and the database column value to the same case for case-insensitive matching.
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// * SQLite: only cast ASCII chars because it doesn't handle complete Unicode case folding
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// * Other databases: use database's string function, assuming that they are able to handle complete Unicode case folding correctly
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func BuildCaseInsensitiveLike(key, value string) builder.Cond {
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// ToLowerASCII is about 7% faster than ToUpperASCII (according to Golang's benchmark)
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if setting.Database.Type.IsSQLite3() {
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return builder.Like{"LOWER(" + key + ")", util.ToLowerASCII(value)}
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}
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return builder.Like{"LOWER(" + key + ")", strings.ToLower(value)}
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}
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// BuildCaseInsensitiveIn returns a condition to check if the given value is in the given values case-insensitively.
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// See BuildCaseInsensitiveLike for more details
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func BuildCaseInsensitiveIn(key string, values []string) builder.Cond {
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incaseValues := make([]string, len(values))
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caseCast := strings.ToLower
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if setting.Database.Type.IsSQLite3() {
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caseCast = util.ToLowerASCII
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}
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for i, value := range values {
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incaseValues[i] = caseCast(value)
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}
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return builder.In("LOWER("+key+")", incaseValues)
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}
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// BuilderDialect returns the xorm.Builder dialect of the engine
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func BuilderDialect() string {
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switch {
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case setting.Database.Type.IsMySQL():
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return builder.MYSQL
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case setting.Database.Type.IsSQLite3():
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return builder.SQLITE
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case setting.Database.Type.IsPostgreSQL():
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return builder.POSTGRES
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case setting.Database.Type.IsMSSQL():
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return builder.MSSQL
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default:
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return ""
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}
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}
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