mirror of https://github.com/go-python/gopy.git
88 lines
1.7 KiB
Go
88 lines
1.7 KiB
Go
package main
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import (
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"fmt"
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"go/build"
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"log"
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"os"
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"path/filepath"
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"github.com/gonuts/commander"
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"github.com/gonuts/flag"
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)
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func gopyMakeCmdGen() *commander.Command {
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cmd := &commander.Command{
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Run: gopyRunCmdGen,
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UsageLine: "gen <go-package-name>",
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Short: "generate (C)Python language bindings for Go",
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Long: `
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gen generates (C)Python language bindings for a Go package.
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ex:
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$ gopy gen [options] <go-package-name>
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$ gopy gen github.com/go-python/gopy/_examples/hi
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`,
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Flag: *flag.NewFlagSet("gopy-gen", flag.ExitOnError),
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}
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cmd.Flag.String("lang", "python", "target language for bindings")
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cmd.Flag.String("output", "", "output directory for bindings")
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return cmd
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}
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func gopyRunCmdGen(cmdr *commander.Command, args []string) error {
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var err error
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if len(args) != 1 {
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log.Printf("expect a fully qualified go package name as argument\n")
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return fmt.Errorf(
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"gopy-gen: expect a fully qualified go package name as argument",
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)
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}
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odir := cmdr.Flag.Lookup("output").Value.Get().(string)
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lang := cmdr.Flag.Lookup("lang").Value.Get().(string)
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cwd, err := os.Getwd()
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if err != nil {
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log.Fatal(err)
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}
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if odir == "" {
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odir = cwd
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} else {
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err = os.MkdirAll(odir, 0755)
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if err != nil {
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return fmt.Errorf(
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"gopy-gen: could not create output directory: %v\n", err,
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)
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}
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}
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odir, err = filepath.Abs(odir)
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if err != nil {
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return fmt.Errorf(
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"gopy-gen: could not infer absolute path to output directory: %v\n",
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err,
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)
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}
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path := args[0]
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pkg, err := build.Import(path, cwd, 0)
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if err != nil {
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return fmt.Errorf(
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"gopy-gen: go/build.Inport failed with path=%q: %v\n",
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path,
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err,
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)
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}
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err = genPkg(odir, pkg, lang)
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if err != nil {
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return err
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}
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return err
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}
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