/
info.go
61 lines (54 loc) · 1.23 KB
/
info.go
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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package debug
import (
"fmt"
"io"
"os/exec"
"strings"
)
type PrintMode int
const (
PlainText = PrintMode(iota)
Markdown
HTML
)
// Version is a manually-updated mechanism for tracking versions.
var Version = "v0.1.3"
// This writes the version and environment information to a writer.
func PrintVersionInfo(w io.Writer, verbose bool, mode PrintMode) {
if !verbose {
printBuildInfo(w, false, mode)
return
}
section(w, mode, "Build info", func() {
printBuildInfo(w, true, mode)
})
fmt.Fprint(w, "\n")
section(w, mode, "Go info", func() {
cmd := exec.Command("go", "version")
cmd.Stdout = w
cmd.Run()
fmt.Fprint(w, "\n")
cmd = exec.Command("go", "env")
cmd.Stdout = w
cmd.Run()
})
}
func section(w io.Writer, mode PrintMode, title string, body func()) {
switch mode {
case PlainText:
fmt.Fprintln(w, title)
fmt.Fprintln(w, strings.Repeat("-", len(title)))
body()
case Markdown:
fmt.Fprintf(w, "#### %s\n\n```\n", title)
body()
fmt.Fprintf(w, "```\n")
case HTML:
fmt.Fprintf(w, "<h3>%s</h3>\n<pre>\n", title)
body()
fmt.Fprint(w, "</pre>\n")
}
}