mirror of https://github.com/minio/minio.git
104 lines
3.4 KiB
Go
104 lines
3.4 KiB
Go
/*
|
|
* Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"fmt"
|
|
"math"
|
|
"runtime"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/cheggaaa/pb"
|
|
humanize "github.com/dustin/go-humanize"
|
|
"github.com/fatih/color"
|
|
)
|
|
|
|
// computeUpdateMessage - calculates the update message, only if a
|
|
// newer version is available.
|
|
func computeUpdateMessage(downloadURL string, older time.Duration) string {
|
|
if downloadURL == "" || older <= 0 {
|
|
return ""
|
|
}
|
|
|
|
// Compute friendly duration string to indicate time
|
|
// difference between newer and current release.
|
|
t := time.Time{}
|
|
newerThan := humanize.RelTime(t, t.Add(older), "ago", "")
|
|
|
|
// Return the nicely colored and formatted update message.
|
|
return colorizeUpdateMessage(downloadURL, newerThan)
|
|
}
|
|
|
|
// colorizeUpdateMessage - inspired from Yeoman project npm package https://github.com/yeoman/update-notifier
|
|
func colorizeUpdateMessage(updateString string, newerThan string) string {
|
|
// Initialize coloring.
|
|
cyan := color.New(color.FgCyan, color.Bold).SprintFunc()
|
|
yellow := color.New(color.FgYellow, color.Bold).SprintfFunc()
|
|
|
|
msgLine1Fmt := " You are running an older version of Minio released %s "
|
|
msgLine2Fmt := " Update: %s "
|
|
|
|
// Calculate length *without* color coding: with ANSI terminal
|
|
// color characters, the result is incorrect.
|
|
line1Length := len(fmt.Sprintf(msgLine1Fmt, newerThan))
|
|
line2Length := len(fmt.Sprintf(msgLine2Fmt, updateString))
|
|
|
|
// Populate lines with color coding.
|
|
line1InColor := fmt.Sprintf(msgLine1Fmt, yellow(newerThan))
|
|
line2InColor := fmt.Sprintf(msgLine2Fmt, cyan(updateString))
|
|
|
|
// calculate the rectangular box size.
|
|
maxContentWidth := int(math.Max(float64(line1Length), float64(line2Length)))
|
|
|
|
// termWidth is set to a default one to use when we are
|
|
// not able to calculate terminal width via OS syscalls
|
|
termWidth := 25
|
|
if width, err := pb.GetTerminalWidth(); err == nil {
|
|
termWidth = width
|
|
}
|
|
|
|
// Box cannot be printed if terminal width is small than maxContentWidth
|
|
if maxContentWidth > termWidth {
|
|
return "\n" + line1InColor + "\n" + line2InColor + "\n\n"
|
|
}
|
|
|
|
topLeftChar := "┏"
|
|
topRightChar := "┓"
|
|
bottomLeftChar := "┗"
|
|
bottomRightChar := "┛"
|
|
horizBarChar := "━"
|
|
vertBarChar := "┃"
|
|
// on windows terminal turn off unicode characters.
|
|
if runtime.GOOS == globalWindowsOSName {
|
|
topLeftChar = "+"
|
|
topRightChar = "+"
|
|
bottomLeftChar = "+"
|
|
bottomRightChar = "+"
|
|
horizBarChar = "-"
|
|
vertBarChar = "|"
|
|
}
|
|
|
|
lines := []string{
|
|
yellow(topLeftChar + strings.Repeat(horizBarChar, maxContentWidth) + topRightChar),
|
|
vertBarChar + line1InColor + strings.Repeat(" ", maxContentWidth-line1Length) + vertBarChar,
|
|
vertBarChar + line2InColor + strings.Repeat(" ", maxContentWidth-line2Length) + vertBarChar,
|
|
yellow(bottomLeftChar + strings.Repeat(horizBarChar, maxContentWidth) + bottomRightChar),
|
|
}
|
|
return "\n" + strings.Join(lines, "\n") + "\n"
|
|
}
|