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https://github.com/golang/go
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10539ce303
Change-Id: I6b749858cbba0ec300caa77426ba0ae69a97677d Reviewed-on: https://go-review.googlesource.com/c/tools/+/181997 Run-TryBot: Ian Cottrell <iancottrell@google.com> Reviewed-by: Rebecca Stambler <rstambler@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package debug
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import (
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"fmt"
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"io"
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"os/exec"
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"strings"
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)
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type PrintMode int
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const (
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PlainText = PrintMode(iota)
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Markdown
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HTML
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)
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// Version is a manually-updated mechanism for tracking versions.
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var Version = "v0.1.0"
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// This writes the version and environment information to a writer.
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func PrintVersionInfo(w io.Writer, verbose bool, mode PrintMode) {
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if !verbose {
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printBuildInfo(w, false, mode)
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return
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}
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section(w, mode, "Build info", func() {
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printBuildInfo(w, true, mode)
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})
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fmt.Fprint(w, "\n")
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section(w, mode, "Go info", func() {
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cmd := exec.Command("go", "version")
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cmd.Stdout = w
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cmd.Run()
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fmt.Fprint(w, "\n")
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cmd = exec.Command("go", "env")
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cmd.Stdout = w
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cmd.Run()
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})
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}
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func section(w io.Writer, mode PrintMode, title string, body func()) {
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switch mode {
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case PlainText:
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fmt.Fprintln(w, title)
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fmt.Fprintln(w, strings.Repeat("-", len(title)))
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body()
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case Markdown:
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fmt.Fprintf(w, "#### %s\n\n```\n", title)
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body()
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fmt.Fprintf(w, "```\n")
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case HTML:
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fmt.Fprintf(w, "<h3>%s</h3>\n<pre>\n", title)
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body()
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fmt.Fprint(w, "</pre>\n")
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}
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}
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