- // Copyright 2022 The Gitea Authors. All rights reserved.
- // SPDX-License-Identifier: MIT
-
- package i18n
-
- import (
- "fmt"
- "reflect"
- )
-
- // Format formats provided arguments for a given translated message
- func Format(format string, args ...any) (msg string, err error) {
- if len(args) == 0 {
- return format, nil
- }
-
- fmtArgs := make([]any, 0, len(args))
- for _, arg := range args {
- val := reflect.ValueOf(arg)
- if val.Kind() == reflect.Slice {
- // Previously, we would accept Tr(lang, key, a, [b, c], d, [e, f]) as Sprintf(msg, a, b, c, d, e, f)
- // but this is an unstable behavior.
- //
- // So we restrict the accepted arguments to either:
- //
- // 1. Tr(lang, key, [slice-items]) as Sprintf(msg, items...)
- // 2. Tr(lang, key, args...) as Sprintf(msg, args...)
- if len(args) == 1 {
- for i := 0; i < val.Len(); i++ {
- fmtArgs = append(fmtArgs, val.Index(i).Interface())
- }
- } else {
- err = ErrUncertainArguments
- break
- }
- } else {
- fmtArgs = append(fmtArgs, arg)
- }
- }
- return fmt.Sprintf(format, fmtArgs...), err
- }
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