2be77e4ffc
Change-Id: Ie91223592474938cbfb9d7e4abe85867acdf69db Reviewed-on: https://go-review.googlesource.com/2380 Reviewed-by: David Crawshaw <crawshaw@golang.org>
70 lines
1.4 KiB
Go
70 lines
1.4 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"flag"
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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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)
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var (
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lang = flag.String("lang", "java", "target language for bindings, either java or go.")
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output = flag.String("output", "", "result will be written to the file instead of stdout.")
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)
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var usage = `The Gobind tool generates Java language bindings for Go.
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For usage details, see doc.go.`
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func main() {
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flag.Parse()
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w := os.Stdout
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if *output != "" {
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if err := os.MkdirAll(filepath.Dir(*output), 0755); err != nil {
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fmt.Fprintf(os.Stderr, "invalid output file: %v\n", err)
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os.Exit(1)
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}
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f, err := os.Create(*output)
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if err != nil {
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fmt.Fprintf(os.Stderr, "invalid output file: %v\n", err)
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os.Exit(1)
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}
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w = f
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}
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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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for _, arg := range flag.Args() {
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pkg, err := build.Import(arg, cwd, 0)
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if err != nil {
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fmt.Fprintf(os.Stderr, "%s: %v\n", arg, err)
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os.Exit(1)
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}
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genPkg(w, pkg)
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}
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if err := w.Close(); err != nil {
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errorf("error in closing output: %v", err)
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}
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os.Exit(exitStatus)
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}
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var exitStatus = 0
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func errorf(format string, args ...interface{}) {
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fmt.Fprintf(os.Stderr, format, args...)
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fmt.Fprintln(os.Stderr)
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exitStatus = 1
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}
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