+++ /dev/null
-// Copyright 2013 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 main
-
-import (
- "bufio"
- "bytes"
- "fmt"
- "html/template"
- "io"
- "io/ioutil"
- "math"
- "os"
- "os/exec"
- "path/filepath"
- "runtime"
-
- "golang.org/x/tools/cover"
-)
-
-// htmlOutput reads the profile data from profile and generates an HTML
-// coverage report, writing it to outfile. If outfile is empty,
-// it writes the report to a temporary file and opens it in a web browser.
-func htmlOutput(profile, outfile string) error {
- profiles, err := cover.ParseProfiles(profile)
- if err != nil {
- return err
- }
-
- var d templateData
-
- for _, profile := range profiles {
- fn := profile.FileName
- if profile.Mode == "set" {
- d.Set = true
- }
- file, err := findFile(fn)
- if err != nil {
- return err
- }
- src, err := ioutil.ReadFile(file)
- if err != nil {
- return fmt.Errorf("can't read %q: %v", fn, err)
- }
- var buf bytes.Buffer
- err = htmlGen(&buf, src, profile.Boundaries(src))
- if err != nil {
- return err
- }
- d.Files = append(d.Files, &templateFile{
- Name: fn,
- Body: template.HTML(buf.String()),
- Coverage: percentCovered(profile),
- })
- }
-
- var out *os.File
- if outfile == "" {
- var dir string
- dir, err = ioutil.TempDir("", "cover")
- if err != nil {
- return err
- }
- out, err = os.Create(filepath.Join(dir, "coverage.html"))
- } else {
- out, err = os.Create(outfile)
- }
- if err != nil {
- return err
- }
- err = htmlTemplate.Execute(out, d)
- if err == nil {
- err = out.Close()
- }
- if err != nil {
- return err
- }
-
- if outfile == "" {
- if !startBrowser("file://" + out.Name()) {
- fmt.Fprintf(os.Stderr, "HTML output written to %s\n", out.Name())
- }
- }
-
- return nil
-}
-
-// percentCovered returns, as a percentage, the fraction of the statements in
-// the profile covered by the test run.
-// In effect, it reports the coverage of a given source file.
-func percentCovered(p *cover.Profile) float64 {
- var total, covered int64
- for _, b := range p.Blocks {
- total += int64(b.NumStmt)
- if b.Count > 0 {
- covered += int64(b.NumStmt)
- }
- }
- if total == 0 {
- return 0
- }
- return float64(covered) / float64(total) * 100
-}
-
-// htmlGen generates an HTML coverage report with the provided filename,
-// source code, and tokens, and writes it to the given Writer.
-func htmlGen(w io.Writer, src []byte, boundaries []cover.Boundary) error {
- dst := bufio.NewWriter(w)
- for i := range src {
- for len(boundaries) > 0 && boundaries[0].Offset == i {
- b := boundaries[0]
- if b.Start {
- n := 0
- if b.Count > 0 {
- n = int(math.Floor(b.Norm*9)) + 1
- }
- fmt.Fprintf(dst, `<span class="cov%v" title="%v">`, n, b.Count)
- } else {
- dst.WriteString("</span>")
- }
- boundaries = boundaries[1:]
- }
- switch b := src[i]; b {
- case '>':
- dst.WriteString(">")
- case '<':
- dst.WriteString("<")
- case '&':
- dst.WriteString("&")
- case '\t':
- dst.WriteString(" ")
- default:
- dst.WriteByte(b)
- }
- }
- return dst.Flush()
-}
-
-// startBrowser tries to open the URL in a browser
-// and reports whether it succeeds.
-func startBrowser(url string) bool {
- // try to start the browser
- var args []string
- switch runtime.GOOS {
- case "darwin":
- args = []string{"open"}
- case "windows":
- args = []string{"cmd", "/c", "start"}
- default:
- args = []string{"xdg-open"}
- }
- cmd := exec.Command(args[0], append(args[1:], url)...)
- return cmd.Start() == nil
-}
-
-// rgb returns an rgb value for the specified coverage value
-// between 0 (no coverage) and 10 (max coverage).
-func rgb(n int) string {
- if n == 0 {
- return "rgb(192, 0, 0)" // Red
- }
- // Gradient from gray to green.
- r := 128 - 12*(n-1)
- g := 128 + 12*(n-1)
- b := 128 + 3*(n-1)
- return fmt.Sprintf("rgb(%v, %v, %v)", r, g, b)
-}
-
-// colors generates the CSS rules for coverage colors.
-func colors() template.CSS {
- var buf bytes.Buffer
- for i := 0; i < 11; i++ {
- fmt.Fprintf(&buf, ".cov%v { color: %v }\n", i, rgb(i))
- }
- return template.CSS(buf.String())
-}
-
-var htmlTemplate = template.Must(template.New("html").Funcs(template.FuncMap{
- "colors": colors,
-}).Parse(tmplHTML))
-
-type templateData struct {
- Files []*templateFile
- Set bool
-}
-
-type templateFile struct {
- Name string
- Body template.HTML
- Coverage float64
-}
-
-const tmplHTML = `
-<!DOCTYPE html>
-<html>
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
- <style>
- body {
- background: black;
- color: rgb(80, 80, 80);
- }
- body, pre, #legend span {
- font-family: Menlo, monospace;
- font-weight: bold;
- }
- #topbar {
- background: black;
- position: fixed;
- top: 0; left: 0; right: 0;
- height: 42px;
- border-bottom: 1px solid rgb(80, 80, 80);
- }
- #content {
- margin-top: 50px;
- }
- #nav, #legend {
- float: left;
- margin-left: 10px;
- }
- #legend {
- margin-top: 12px;
- }
- #nav {
- margin-top: 10px;
- }
- #legend span {
- margin: 0 5px;
- }
- {{colors}}
- </style>
- </head>
- <body>
- <div id="topbar">
- <div id="nav">
- <select id="files">
- {{range $i, $f := .Files}}
- <option value="file{{$i}}">{{$f.Name}} ({{printf "%.1f" $f.Coverage}}%)</option>
- {{end}}
- </select>
- </div>
- <div id="legend">
- <span>not tracked</span>
- {{if .Set}}
- <span class="cov0">not covered</span>
- <span class="cov8">covered</span>
- {{else}}
- <span class="cov0">no coverage</span>
- <span class="cov1">low coverage</span>
- <span class="cov2">*</span>
- <span class="cov3">*</span>
- <span class="cov4">*</span>
- <span class="cov5">*</span>
- <span class="cov6">*</span>
- <span class="cov7">*</span>
- <span class="cov8">*</span>
- <span class="cov9">*</span>
- <span class="cov10">high coverage</span>
- {{end}}
- </div>
- </div>
- <div id="content">
- {{range $i, $f := .Files}}
- <pre class="file" id="file{{$i}}" {{if $i}}style="display: none"{{end}}>{{$f.Body}}</pre>
- {{end}}
- </div>
- </body>
- <script>
- (function() {
- var files = document.getElementById('files');
- var visible = document.getElementById('file0');
- files.addEventListener('change', onChange, false);
- function onChange() {
- visible.style.display = 'none';
- visible = document.getElementById(files.value);
- visible.style.display = 'block';
- window.scrollTo(0, 0);
- }
- })();
- </script>
-</html>
-`
projects / dotfiles / .git / blobdiff