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43 lines
1.1 KiB
43 lines
1.1 KiB
2 years ago
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// Copyright 2022 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package i18n
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import (
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"fmt"
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"reflect"
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)
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// Format formats provided arguments for a given translated message
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func Format(format string, args ...interface{}) (msg string, err error) {
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if len(args) == 0 {
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return format, nil
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}
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fmtArgs := make([]interface{}, 0, len(args))
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for _, arg := range args {
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val := reflect.ValueOf(arg)
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if val.Kind() == reflect.Slice {
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// Previously, we would accept Tr(lang, key, a, [b, c], d, [e, f]) as Sprintf(msg, a, b, c, d, e, f)
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// but this is an unstable behavior.
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//
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// So we restrict the accepted arguments to either:
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//
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// 1. Tr(lang, key, [slice-items]) as Sprintf(msg, items...)
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// 2. Tr(lang, key, args...) as Sprintf(msg, args...)
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if len(args) == 1 {
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for i := 0; i < val.Len(); i++ {
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fmtArgs = append(fmtArgs, val.Index(i).Interface())
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}
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} else {
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err = ErrUncertainArguments
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break
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}
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} else {
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fmtArgs = append(fmtArgs, arg)
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}
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}
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return fmt.Sprintf(format, fmtArgs...), err
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}
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