1 files changed, 59 insertions, 0 deletions
diff --git a/modules/charset/ambiguous.go b/modules/charset/ambiguous.go
new file mode 100644
index 00000000..96e0561e
--- /dev/null
+++ b/modules/charset/ambiguous.go
@@ -0,0 +1,59 @@
+// This file is generated by modules/charset/ambiguous/generate.go DO NOT EDIT
+// Copyright 2022 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package charset
+
+import (
+	"sort"
+	"strings"
+	"unicode"
+
+	"code.gitea.io/gitea/modules/translation"
+)
+
+// AmbiguousTablesForLocale provides the table of ambiguous characters for this locale.
+func AmbiguousTablesForLocale(locale translation.Locale) []*AmbiguousTable {
+	key := locale.Language()
+	var table *AmbiguousTable
+	var ok bool
+	for len(key) > 0 {
+		if table, ok = AmbiguousCharacters[key]; ok {
+			break
+		}
+		idx := strings.LastIndexAny(key, "-_")
+		if idx < 0 {
+			key = ""
+		} else {
+			key = key[:idx]
+		}
+	}
+	if table == nil && (locale.Language() == "zh-CN" || locale.Language() == "zh_CN") {
+		table = AmbiguousCharacters["zh-hans"]
+	}
+	if table == nil && strings.HasPrefix(locale.Language(), "zh") {
+		table = AmbiguousCharacters["zh-hant"]
+	}
+	if table == nil {
+		table = AmbiguousCharacters["_default"]
+	}
+
+	return []*AmbiguousTable{
+		table,
+		AmbiguousCharacters["_common"],
+	}
+}
+
+func isAmbiguous(r rune, confusableTo *rune, tables ...*AmbiguousTable) bool {
+	for _, table := range tables {
+		if !unicode.Is(table.RangeTable, r) {
+			continue
+		}
+		i := sort.Search(len(table.Confusable), func(i int) bool {
+			return table.Confusable[i] >= r
+		})
+		(*confusableTo) = table.With[i]
+		return true
+	}
+	return false
+}