mirror of https://github.com/gdamore/tcell.git
51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
//go:build !windows && !nacl && !plan9
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// +build !windows,!nacl,!plan9
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// Copyright 2016 The TCell Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use file except in compliance with the License.
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// You may obtain a copy of the license at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tcell
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import (
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"os"
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"strings"
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)
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func getCharset() string {
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// Determine the character set. This can help us later.
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// Per POSIX, we search for LC_ALL first, then LC_CTYPE, and
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// finally LANG. First one set wins.
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locale := ""
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if locale = os.Getenv("LC_ALL"); locale == "" {
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if locale = os.Getenv("LC_CTYPE"); locale == "" {
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locale = os.Getenv("LANG")
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}
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}
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if locale == "POSIX" || locale == "C" {
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return "US-ASCII"
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}
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if i := strings.IndexRune(locale, '@'); i >= 0 {
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locale = locale[:i]
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}
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if i := strings.IndexRune(locale, '.'); i >= 0 {
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locale = locale[i+1:]
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} else {
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// Default assumption, and on Linux we can see LC_ALL
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// without a character set, which we assume implies UTF-8.
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return "UTF-8"
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}
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// XXX: add support for aliases
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return locale
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}
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