125 lines
2.1 KiB
Go
125 lines
2.1 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"io"
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"log"
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"os"
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"os/exec"
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"text/template"
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"time"
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"github.com/Xe/x/tools/license/licenses"
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)
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var (
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name = flag.String("name", "", "name of the person licensing the software")
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email = flag.String("email", "", "email of the person licensing the software")
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out = flag.Bool("out", false, "write to a file instead of stdout")
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showAll = flag.Bool("show", false, "show all licenses instead of generating one")
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)
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func init() {
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flag.Usage = func() {
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fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
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fmt.Fprintf(os.Stderr, "%s [options] <license kind>\n\n", os.Args[0])
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flag.PrintDefaults()
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fmt.Fprintln(os.Stderr, "\nBy default the name and email are scraped from `git config`")
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os.Exit(2)
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}
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}
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func main() {
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flag.Parse()
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if *showAll {
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fmt.Println("Licenses available:")
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for license, _ := range licenses.List {
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fmt.Printf(" %s\n", license)
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}
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os.Exit(1)
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}
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if len(flag.Args()) != 1 {
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flag.Usage()
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}
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kind := flag.Arg(0)
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outfile := "LICENSE"
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var licensetext string
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if _, ok := licenses.List[kind]; !ok {
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fmt.Printf("invalid license kind %s\n", kind)
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os.Exit(1)
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}
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licensetext = licenses.List[kind]
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if kind == "unlicense" && *out {
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outfile = "UNLICENSE"
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}
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if kind == "sqlite" && *out {
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outfile = "BLESSING"
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}
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if *name == "" {
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cmd := exec.Command("git", "config", "user.name")
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out, err := cmd.Output()
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if err != nil {
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log.Fatal(err)
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}
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myname := string(out)
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*name = myname[:len(myname)-1]
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}
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if *email == "" {
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cmd := exec.Command("git", "config", "user.email")
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out, err := cmd.Output()
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if err != nil {
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log.Fatal(err)
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}
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myemail := string(out)
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*email = myemail[:len(myemail)-1]
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}
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var wr io.Writer
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if *out {
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fout, err := os.Create(outfile)
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if err != nil {
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log.Fatal(err)
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}
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defer fout.Close()
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wr = fout
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} else {
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wr = os.Stdout
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defer fmt.Println()
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}
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tmpl, err := template.New("license").Parse(licensetext)
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if err != nil {
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log.Fatal(err)
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}
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err = tmpl.Execute(wr, struct {
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Name string
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Email string
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Year int
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}{
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Name: *name,
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Email: *email,
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Year: time.Now().Year(),
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})
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}
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