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87 lines
2.0 KiB
87 lines
2.0 KiB
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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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 this 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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*/
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package logger
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import (
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"fmt"
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"os"
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"regexp"
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"github.com/fatih/color"
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isatty "github.com/mattn/go-isatty"
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)
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// Global colors.
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var (
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// Check if we stderr, stdout are dumb terminals, we do not apply
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// ansi coloring on dumb terminals.
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isTerminal = func() bool {
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return isatty.IsTerminal(os.Stdout.Fd()) && isatty.IsTerminal(os.Stderr.Fd())
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}
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ColorBold = func() func(a ...interface{}) string {
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if isTerminal() {
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return color.New(color.Bold).SprintFunc()
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}
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return fmt.Sprint
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}()
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ColorFgRed = func() func(format string, a ...interface{}) string {
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if isTerminal() {
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return color.New(color.FgRed).SprintfFunc()
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}
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return fmt.Sprintf
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}()
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ColorBgRed = func() func(format string, a ...interface{}) string {
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if isTerminal() {
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return color.New(color.BgRed).SprintfFunc()
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}
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return fmt.Sprintf
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}()
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ColorFgWhite = func() func(format string, a ...interface{}) string {
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if isTerminal() {
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return color.New(color.FgWhite).SprintfFunc()
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}
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return fmt.Sprintf
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}()
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)
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var ansiRE = regexp.MustCompile("(\x1b[^m]*m)")
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// Print ANSI Control escape
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func ansiEscape(format string, args ...interface{}) {
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var Esc = "\x1b"
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fmt.Printf("%s%s", Esc, fmt.Sprintf(format, args...))
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}
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func ansiMoveRight(n int) {
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if isTerminal() {
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ansiEscape("[%dC", n)
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}
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}
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func ansiSaveAttributes() {
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if isTerminal() {
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ansiEscape("7")
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}
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}
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func ansiRestoreAttributes() {
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if isTerminal() {
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ansiEscape("8")
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}
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}
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