Adding upstream version 0.0~git20250520.a1d9079+dfsg.

Signed-off-by: Daniel Baumann <daniel@debian.org>

cmd/gomobile/gendex.go

@@ -0,0 +1,158 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build ignore
+
+// Gendex generates a dex file used by Go apps created with gomobile.
+//
+// The dex is a thin extension of NativeActivity, providing access to
+// a few platform features (not the SDK UI) not easily accessible from
+// NDK headers. Long term these could be made part of the standard NDK,
+// however that would limit gomobile to working with newer versions of
+// the Android OS, so we do this while we wait.
+//
+// Respects ANDROID_HOME to set the path of the Android SDK.
+// javac must be on the PATH.
+package main
+
+import (
+	"bytes"
+	"encoding/base64"
+	"errors"
+	"flag"
+	"fmt"
+	"go/format"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"golang.org/x/mobile/internal/sdkpath"
+)
+
+var outfile = flag.String("o", "", "result will be written file")
+
+var tmpdir string
+
+func main() {
+	flag.Parse()
+
+	var err error
+	tmpdir, err = os.MkdirTemp("", "gendex-")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = gendex()
+	os.RemoveAll(tmpdir)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func gendex() error {
+	androidHome, err := sdkpath.AndroidHome()
+	if err != nil {
+		return fmt.Errorf("couldn't find Android SDK: %w", err)
+	}
+	if err := os.MkdirAll(tmpdir+"/work/org/golang/app", 0775); err != nil {
+		return err
+	}
+	javaFiles, err := filepath.Glob("../../app/*.java")
+	if err != nil {
+		return err
+	}
+	if len(javaFiles) == 0 {
+		return errors.New("could not find ../../app/*.java files")
+	}
+	platform, err := findLast(androidHome + "/platforms")
+	if err != nil {
+		return err
+	}
+	cmd := exec.Command(
+		"javac",
+		"-source", "1.8",
+		"-target", "1.8",
+		"-bootclasspath", platform+"/android.jar",
+		"-d", tmpdir+"/work",
+	)
+	cmd.Args = append(cmd.Args, javaFiles...)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		fmt.Println(cmd.Args)
+		os.Stderr.Write(out)
+		return err
+	}
+	buildTools, err := findLast(androidHome + "/build-tools")
+	if err != nil {
+		return err
+	}
+	cmd = exec.Command(
+		buildTools+"/dx",
+		"--dex",
+		"--output="+tmpdir+"/classes.dex",
+		tmpdir+"/work",
+	)
+	if out, err := cmd.CombinedOutput(); err != nil {
+		os.Stderr.Write(out)
+		return err
+	}
+	src, err := os.ReadFile(tmpdir + "/classes.dex")
+	if err != nil {
+		return err
+	}
+	data := base64.StdEncoding.EncodeToString(src)
+
+	buf := new(bytes.Buffer)
+	fmt.Fprint(buf, header)
+
+	var piece string
+	for len(data) > 0 {
+		l := 70
+		if l > len(data) {
+			l = len(data)
+		}
+		piece, data = data[:l], data[l:]
+		fmt.Fprintf(buf, "\t`%s` + \n", piece)
+	}
+	fmt.Fprintf(buf, "\t``")
+	out, err := format.Source(buf.Bytes())
+	if err != nil {
+		buf.WriteTo(os.Stderr)
+		return err
+	}
+
+	w, err := os.Create(*outfile)
+	if err != nil {
+		return err
+	}
+	if _, err := w.Write(out); err != nil {
+		return err
+	}
+	if err := w.Close(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func findLast(path string) (string, error) {
+	dir, err := os.Open(path)
+	if err != nil {
+		return "", err
+	}
+	children, err := dir.Readdirnames(-1)
+	if err != nil {
+		return "", err
+	}
+	return path + "/" + children[len(children)-1], nil
+}
+
+var header = `// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Code generated by gendex.go. DO NOT EDIT.
+
+package main
+
+var dexStr = `