uname-it: add OSUname + ArchUname from some Googling

go.go

@@ -15,9 +15,11 @@ import (
 )
 
 type OutputTemplateData struct {
-	Dir  string
-	OS   string
-	Arch string
+	Dir       string
+	OS        string
+	OSUname   string
+	Arch      string
+	ArchUname string
 }
 
 type CompileOpts struct {
@@ -58,9 +60,11 @@ func GoCrossCompile(opts *CompileOpts) error {
 		return err
 	}
 	tplData := OutputTemplateData{
-		Dir:  filepath.Base(opts.PackagePath),
-		OS:   opts.Platform.OS,
-		Arch: opts.Platform.Arch,
+		Dir:       filepath.Base(opts.PackagePath),
+		OS:        opts.Platform.OS,
+		OSUname:   opts.Platform.OSUname(),
+		Arch:      opts.Platform.Arch,
+		ArchUname: opts.Platform.ArchUname(),
 	}
 	if err := tpl.Execute(&outputPath, &tplData); err != nil {
 		return err

platform.go

@@ -22,6 +22,33 @@ func (p *Platform) String() string {
 	return fmt.Sprintf("%s/%s", p.OS, p.Arch)
 }
 
+/// Like `uname -s`
+func (p *Platform) OSUname() string {
+	return map[string]string{
+		"darwin":    "Darwin",
+		"dragonfly": "DragonFly",
+		"freebsd":   "FreeBSD",
+		"linux":     "Linux",
+		"netbsd":    "NetBSD",
+		"openbsd":   "OpenBSD",
+		"plan9":     "Plan9",
+		"solaris":   "SunOS",
+		"windows":   "Windows",
+	}[p.OS]
+}
+
+/// Like `uname -m`
+func (p *Platform) ArchUname() string {
+	return map[string]string{
+		"386":     "i386",
+		"amd64":   "x86_64",
+		"arm":     "arm",
+		"arm64":   "aarch64",
+		"ppc64":   "ppc64",
+		"ppc64le": "ppc64le",
+	}[p.Arch]
+}
+
 var (
 	OsList = []string{
 		"darwin",