all: initial import from gio main repository

Signed-off-by: Elias Naur <mail@eliasnaur.com>

gogio/main.go

@@ -0,0 +1,224 @@
+// SPDX-License-Identifier: Unlicense OR MIT
+
+package main
+
+import (
+	"bytes"
+	"errors"
+	"flag"
+	"fmt"
+	"image"
+	"image/color"
+	"image/png"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+
+	"golang.org/x/image/draw"
+	"golang.org/x/sync/errgroup"
+)
+
+var (
+	target        = flag.String("target", "", "specify target (ios, tvos, android, js).\n")
+	archNames     = flag.String("arch", "", "specify architecture(s) to include (arm, arm64, amd64).")
+	minsdk        = flag.Int("minsdk", 0, "specify the minimum supported operating system level")
+	buildMode     = flag.String("buildmode", "exe", "specify buildmode (archive, exe)")
+	destPath      = flag.String("o", "", "output file or directory.\nFor -target ios or tvos, use the .app suffix to target simulators.")
+	appID         = flag.String("appid", "", "app identifier (for -buildmode=exe)")
+	version       = flag.Int("version", 1, "app version (for -buildmode=exe)")
+	printCommands = flag.Bool("x", false, "print the commands")
+	keepWorkdir   = flag.Bool("work", false, "print the name of the temporary work directory and do not delete it when exiting.")
+	linkMode      = flag.String("linkmode", "", "set the -linkmode flag of the go tool")
+	extraLdflags  = flag.String("ldflags", "", "extra flags to the Go linker")
+	extraTags     = flag.String("tags", "", "extra tags to the Go tool")
+	iconPath      = flag.String("icon", "", "specify an icon for iOS and Android")
+	signKey       = flag.String("signkey", "", "specify the path of the keystore to be used to sign Android apk files.")
+	signPass      = flag.String("signpass", "", "specify the password to decrypt the signkey.")
+)
+
+func main() {
+	flag.Usage = func() {
+		fmt.Fprint(os.Stderr, mainUsage)
+	}
+	flag.Parse()
+	if err := flagValidate(); err != nil {
+		fmt.Fprintf(os.Stderr, "gogio: %v\n", err)
+		os.Exit(1)
+	}
+	buildInfo, err := newBuildInfo(flag.Arg(0))
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "gogio: %v\n", err)
+		os.Exit(1)
+	}
+	if err := build(buildInfo); err != nil {
+		fmt.Fprintf(os.Stderr, "gogio: %v\n", err)
+		os.Exit(1)
+	}
+	os.Exit(0)
+}
+
+func flagValidate() error {
+	pkgPathArg := flag.Arg(0)
+	if pkgPathArg == "" {
+		return errors.New("specify a package")
+	}
+	if *target == "" {
+		return errors.New("please specify -target")
+	}
+	switch *target {
+	case "ios", "tvos", "android", "js", "windows":
+	default:
+		return fmt.Errorf("invalid -target %s", *target)
+	}
+	switch *buildMode {
+	case "archive", "exe":
+	default:
+		return fmt.Errorf("invalid -buildmode %s", *buildMode)
+	}
+	return nil
+}
+
+func build(bi *buildInfo) error {
+	tmpDir, err := ioutil.TempDir("", "gogio-")
+	if err != nil {
+		return err
+	}
+	if *keepWorkdir {
+		fmt.Fprintf(os.Stderr, "WORKDIR=%s\n", tmpDir)
+	} else {
+		defer os.RemoveAll(tmpDir)
+	}
+	switch *target {
+	case "js":
+		return buildJS(bi)
+	case "ios", "tvos":
+		return buildIOS(tmpDir, *target, bi)
+	case "android":
+		return buildAndroid(tmpDir, bi)
+	case "windows":
+		return buildWindows(tmpDir, bi)
+	default:
+		panic("unreachable")
+	}
+}
+
+func runCmdRaw(cmd *exec.Cmd) ([]byte, error) {
+	if *printCommands {
+		fmt.Printf("%s\n", strings.Join(cmd.Args, " "))
+	}
+	out, err := cmd.Output()
+	if err == nil {
+		return out, nil
+	}
+	if err, ok := err.(*exec.ExitError); ok {
+		return nil, fmt.Errorf("%s failed: %s%s", strings.Join(cmd.Args, " "), out, err.Stderr)
+	}
+	return nil, err
+}
+
+func runCmd(cmd *exec.Cmd) (string, error) {
+	out, err := runCmdRaw(cmd)
+	return string(bytes.TrimSpace(out)), err
+}
+
+func copyFile(dst, src string) (err error) {
+	r, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer r.Close()
+	w, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if cerr := w.Close(); err == nil {
+			err = cerr
+		}
+	}()
+	_, err = io.Copy(w, r)
+	return err
+}
+
+type arch struct {
+	iosArch   string
+	jniArch   string
+	clangArch string
+}
+
+var allArchs = map[string]arch{
+	"arm": {
+		iosArch:   "armv7",
+		jniArch:   "armeabi-v7a",
+		clangArch: "armv7a-linux-androideabi",
+	},
+	"arm64": {
+		iosArch:   "arm64",
+		jniArch:   "arm64-v8a",
+		clangArch: "aarch64-linux-android",
+	},
+	"386": {
+		iosArch:   "i386",
+		jniArch:   "x86",
+		clangArch: "i686-linux-android",
+	},
+	"amd64": {
+		iosArch:   "x86_64",
+		jniArch:   "x86_64",
+		clangArch: "x86_64-linux-android",
+	},
+}
+
+type iconVariant struct {
+	path string
+	size int
+	fill bool
+}
+
+func buildIcons(baseDir, icon string, variants []iconVariant) error {
+	f, err := os.Open(icon)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	img, _, err := image.Decode(f)
+	if err != nil {
+		return err
+	}
+	var resizes errgroup.Group
+	for _, v := range variants {
+		v := v
+		resizes.Go(func() (err error) {
+			path := filepath.Join(baseDir, v.path)
+			if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
+				return err
+			}
+			f, err := os.Create(path)
+			if err != nil {
+				return err
+			}
+			defer func() {
+				if cerr := f.Close(); err == nil {
+					err = cerr
+				}
+			}()
+			return png.Encode(f, resizeIcon(v, img))
+		})
+	}
+	return resizes.Wait()
+}
+
+func resizeIcon(v iconVariant, img image.Image) *image.NRGBA {
+	scaled := image.NewNRGBA(image.Rectangle{Max: image.Point{X: v.size, Y: v.size}})
+	op := draw.Src
+	if v.fill {
+		op = draw.Over
+		draw.Draw(scaled, scaled.Bounds(), &image.Uniform{color.White}, image.Point{}, draw.Src)
+	}
+	draw.CatmullRom.Scale(scaled, scaled.Bounds(), img, img.Bounds(), op, nil)
+
+	return scaled
+}