73 lines
2.2 KiB
Go
73 lines
2.2 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015 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 main
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import (
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"fmt"
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"runtime"
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"strings"
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"github.com/fatih/color"
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"github.com/olekukonko/ts"
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)
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// colorizeMessage - inspired from Yeoman project npm package https://github.com/yeoman/update-notifier
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func colorizeMessage(message string) string {
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// initialize coloring
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cyan := color.New(color.FgCyan, color.Bold).SprintFunc()
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yellow := color.New(color.FgYellow, color.Bold).SprintfFunc()
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// calculate length without color coding, due to ANSI color characters padded to actual
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// string the final length is wrong than the original string length
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lineStr := fmt.Sprintf(" \"%s\" . ", message)
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lineLength := len(lineStr)
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// populate lines with color coding
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lineInColor := fmt.Sprintf(" \"%s\" . ", cyan(message))
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maxContentWidth := lineLength
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terminal, err := ts.GetSize()
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if err != nil {
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// no coloring needed just send as is
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return message
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}
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var msg string
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switch {
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case len(lineStr) > terminal.Col():
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msg = lineInColor
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default:
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// on windows terminal turn off unicode characters
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var top, bottom, sideBar string
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if runtime.GOOS == "windows" {
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top = yellow("*" + strings.Repeat("*", maxContentWidth) + "*")
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bottom = yellow("*" + strings.Repeat("*", maxContentWidth) + "*")
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sideBar = yellow("|")
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} else {
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// color the rectangular box, use unicode characters here
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top = yellow("┏" + strings.Repeat("━", maxContentWidth) + "┓")
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bottom = yellow("┗" + strings.Repeat("━", maxContentWidth) + "┛")
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sideBar = yellow("┃")
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}
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// construct the final message
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msg = top + "\n" +
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sideBar + lineInColor + sideBar + "\n" +
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bottom
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}
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return msg
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}
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