90 lines
2.7 KiB
Go
90 lines
2.7 KiB
Go
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// Copyright 2022 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 sdkpath provides functions for locating the Android SDK.
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// These functions respect the ANDROID_HOME environment variable, and
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// otherwise use the default SDK location.
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package sdkpath
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import (
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"fmt"
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"os"
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"path/filepath"
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"runtime"
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"strconv"
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"strings"
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)
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// AndroidHome returns the absolute path of the selected Android SDK,
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// if one can be found.
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func AndroidHome() (string, error) {
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androidHome := os.Getenv("ANDROID_HOME")
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if androidHome == "" {
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home, err := os.UserHomeDir()
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if err != nil {
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return "", err
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}
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switch runtime.GOOS {
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case "windows":
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// See https://android.googlesource.com/platform/tools/adt/idea/+/85b4bfb7a10ad858a30ffa4003085b54f9424087/native/installer/win/setup_android_studio.nsi#100
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androidHome = filepath.Join(home, "AppData", "Local", "Android", "sdk")
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case "darwin":
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// See https://android.googlesource.com/platform/tools/asuite/+/67e0cd9604379e9663df57f16a318d76423c0aa8/aidegen/lib/ide_util.py#88
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androidHome = filepath.Join(home, "Library", "Android", "sdk")
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default: // Linux, BSDs, etc.
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// See LINUX_ANDROID_SDK_PATH in ide_util.py above.
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androidHome = filepath.Join(home, "Android", "Sdk")
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}
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}
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if info, err := os.Stat(androidHome); err != nil {
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return "", fmt.Errorf("%w; Android SDK was not found at %s", err, androidHome)
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} else if !info.IsDir() {
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return "", fmt.Errorf("%s is not a directory", androidHome)
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}
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return androidHome, nil
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}
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// AndroidAPIPath returns an android SDK platform directory within the configured SDK.
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// If there are multiple platforms that satisfy the minimum version requirement,
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// AndroidAPIPath returns the latest one among them.
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func AndroidAPIPath(api int) (string, error) {
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sdk, err := AndroidHome()
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if err != nil {
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return "", err
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}
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sdkDir, err := os.Open(filepath.Join(sdk, "platforms"))
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if err != nil {
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return "", fmt.Errorf("failed to find android SDK platform: %w", err)
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}
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defer sdkDir.Close()
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fis, err := sdkDir.Readdir(-1)
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if err != nil {
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return "", fmt.Errorf("failed to find android SDK platform (API level: %d): %w", api, err)
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}
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var apiPath string
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var apiVer int
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for _, fi := range fis {
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name := fi.Name()
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if !strings.HasPrefix(name, "android-") {
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continue
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}
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n, err := strconv.Atoi(name[len("android-"):])
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if err != nil || n < api {
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continue
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}
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p := filepath.Join(sdkDir.Name(), name)
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_, err = os.Stat(filepath.Join(p, "android.jar"))
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if err == nil && apiVer < n {
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apiPath = p
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apiVer = n
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}
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}
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if apiVer == 0 {
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return "", fmt.Errorf("failed to find android SDK platform (API level: %d) in %s",
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api, sdkDir.Name())
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}
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return apiPath, nil
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}
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