diff --git a/src/cmd/cover/html.go b/src/cmd/cover/html.go
index 82ef88b79c..f76ea03cf5 100644
--- a/src/cmd/cover/html.go
+++ b/src/cmd/cover/html.go
@@ -172,6 +172,27 @@ type templateData struct {
Set bool
}
+// PackageName returns a name for the package being shown.
+// It does this by choosing the penultimate element of the path
+// name, so foo.bar/baz/foo.go chooses 'baz'. This is cheap
+// and easy, avoids parsing the Go file, and gets a better answer
+// for package main. It returns the empty string if there is
+// a problem.
+func (td templateData) PackageName() string {
+ if len(td.Files) == 0 {
+ return ""
+ }
+ fileName := td.Files[0].Name
+ elems := strings.Split(fileName, "/") // Package path is always slash-separated.
+ // Return the penultimate non-empty element.
+ for i := len(elems) - 2; i >= 0; i-- {
+ if elems[i] != "" {
+ return elems[i]
+ }
+ }
+ return ""
+}
+
type templateFile struct {
Name string
Body template.HTML
@@ -183,7 +204,7 @@ const tmplHTML = `
- Go Coverage Report
+ {{$pkg := .PackageName}}{{if $pkg}}{{$pkg}}: {{end}}Go Coverage Report