93 lines
3.1 KiB
Go
93 lines
3.1 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017 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 cmd
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import (
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"fmt"
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"math"
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"runtime"
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"strings"
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"time"
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"github.com/cheggaaa/pb"
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humanize "github.com/dustin/go-humanize"
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"github.com/fatih/color"
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)
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// colorizeUpdateMessage - inspired from Yeoman project npm package https://github.com/yeoman/update-notifier
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func colorizeUpdateMessage(updateString string, newerThan time.Duration) 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
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// characters padded to actual string the final length is wrong
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// than the original string length.
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newerThanStr := humanize.Time(UTCNow().Add(newerThan))
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line1Str := fmt.Sprintf(" You are running an older version of Minio released %s ", newerThanStr)
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line2Str := fmt.Sprintf(" Update: %s ", updateString)
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line1Length := len(line1Str)
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line2Length := len(line2Str)
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// Populate lines with color coding.
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line1InColor := fmt.Sprintf(" You are running an older version of Minio released %s ", yellow(newerThanStr))
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line2InColor := fmt.Sprintf(" Update: %s ", cyan(updateString))
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// calculate the rectangular box size.
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maxContentWidth := int(math.Max(float64(line1Length), float64(line2Length)))
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// termWidth is set to a default one to use when we are
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// not able to calculate terminal width via OS syscalls
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termWidth := 25
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if width, err := pb.GetTerminalWidth(); err == nil {
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termWidth = width
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}
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// Box cannot be printed if terminal width is small than maxContentWidth
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if maxContentWidth > termWidth {
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return "\n" + line1InColor + "\n" + line2InColor + "\n" + "\n"
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}
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topLeftChar := "┏"
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topRightChar := "┓"
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bottomLeftChar := "┗"
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bottomRightChar := "┛"
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horizBarChar := "━"
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vertBarChar := "┃"
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// on windows terminal turn off unicode characters.
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if runtime.GOOS == globalWindowsOSName {
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topLeftChar = "+"
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topRightChar = "+"
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bottomLeftChar = "+"
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bottomRightChar = "+"
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horizBarChar = "-"
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vertBarChar = "|"
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}
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message := "\n"
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// Add top line
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message += yellow(topLeftChar+strings.Repeat(horizBarChar, maxContentWidth)+topRightChar) + "\n"
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// Add message lines
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message += vertBarChar + line1InColor + strings.Repeat(" ", maxContentWidth-line1Length) + vertBarChar + "\n"
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message += vertBarChar + line2InColor + strings.Repeat(" ", maxContentWidth-line2Length) + vertBarChar + "\n"
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// Add bottom line
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message += yellow(bottomLeftChar+strings.Repeat(horizBarChar, maxContentWidth)+bottomRightChar) + "\n"
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return message
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}
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