<commit_before>/*
 * Copyright (C) 2009, 2010 Jayway AB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jayway.maven.plugins.android;

import org.apache.maven.plugin.MojoExecutionException;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.*;

/**
 * Represents an Android SDK.
 *
 * @author <EMAIL>
 * @author <NAME> <<EMAIL>>
 */
public class AndroidSdk {

    /**
     * property file in each platform folder with details about platform.
     */
    private static final String SOURCE_PROPERTIES_FILENAME = "source.properties";
    /**
     * property name for platform version in sdk source.properties file.
     */
    private static final String PLATFORM_VERSION_PROPERTY = "Platform.Version";
    /**
     * property name for api level version in sdk source.properties file.
     */
    private static final String API_LEVEL_PROPERTY = "AndroidVersion.ApiLevel";

    /**
     * folder name for the sdk sub folder that contains the different platform versions.
     */
    private static final String PLATFORMS_FOLDER_NAME = "platforms";

    /**
     * folder name for the sdk sub folder that contains the platform tools.
     */
    private static final String PLATFORM_TOOLS_FOLDER_NAME = "platform-tools";

    private static final String PARAMETER_MESSAGE = "Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable " + AbstractAndroidMojo.ENV_ANDROID_HOME + ".";

    private static final class Platform {
        final String name;
        final String apiLevel;
        final String path;

        public Platform(String name, String apiLevel, String path) {
            super();
            this.name = name;
            this.apiLevel = apiLevel;
            this.path = path;
        }
    }

    private final File sdkPath;
    private final Platform platform;


    private Set<Platform> availablePlatforms;


    public AndroidSdk(File sdkPath, String platformOrApiLevel) {
        this.sdkPath = sdkPath;
        findAvailablePlatforms();

        if (platformOrApiLevel == null) {
            platform = null;
            // letting this through to preserve compatibility for now
        } else {
            platform = findPlatformByNameOrApiLevel(platformOrApiLevel);
            if (platform == null)
                throw new InvalidSdkException("Invalid SDK: Platform/API level " + platformOrApiLevel + " not available.");
        }
    }

    private Platform findPlatformByNameOrApiLevel(String platformOrApiLevel) {
        for (Platform p : availablePlatforms) {
            if (p.name.equals(platformOrApiLevel) || p.apiLevel.equals(platformOrApiLevel)) {
                return p;
            }
        }
        return null;
    }

    public enum Layout {LAYOUT_1_1, LAYOUT_1_5, LAYOUT_2_3}

    public Layout getLayout() {

        assertPathIsDirectory(sdkPath);

        final File platformTools = new File(sdkPath, PLATFORM_TOOLS_FOLDER_NAME);
        if (platformTools.exists() && platformTools.isDirectory()){
            return Layout.LAYOUT_2_3;
        }
<commit_msg>Extended error message.<commit_after>/*
 * Copyright (C) 2009, 2010 Jayway AB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jayway.maven.plugins.android;

import org.apache.maven.plugin.MojoExecutionException;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.*;

/**
 * Represents an Android SDK.
 *
 * @author <EMAIL>
 * @author <NAME> <<EMAIL>>
 */
public class AndroidSdk {

    /**
     * property file in each platform folder with details about platform.
     */
    private static final String SOURCE_PROPERTIES_FILENAME = "source.properties";
    /**
     * property name for platform version in sdk source.properties file.
     */
    private static final String PLATFORM_VERSION_PROPERTY = "Platform.Version";
    /**
     * property name for api level version in sdk source.properties file.
     */
    private static final String API_LEVEL_PROPERTY = "AndroidVersion.ApiLevel";

    /**
     * folder name for the sdk sub folder that contains the different platform versions.
     */
    private static final String PLATFORMS_FOLDER_NAME = "platforms";

    /**
     * folder name for the sdk sub folder that contains the platform tools.
     */
    private static final String PLATFORM_TOOLS_FOLDER_NAME = "platform-tools";

    private static final String PARAMETER_MESSAGE = "Please provide a proper Android SDK directory path as configuration parameter <sdk><path>...</path></sdk> in the plugin <configuration/>. As an alternative, you may add the parameter to commandline: -Dandroid.sdk.path=... or set environment variable " + AbstractAndroidMojo.ENV_ANDROID_HOME + ".";

    private static final class Platform {
        final String name;
        final String apiLevel;
        final String path;

        public Platform(String name, String apiLevel, String path) {
            super();
            this.name = name;
            this.apiLevel = apiLevel;
            this.path = path;
        }
    }

    private final File sdkPath;
    private final Platform platform;


    private Set<Platform> availablePlatforms;


    public AndroidSdk(File sdkPath, String platformOrApiLevel) {
        this.sdkPath = sdkPath;
        findAvailablePlatforms();

        if (platformOrApiLevel == null) {
            platform = null;
            // letting this through to preserve compatibility for now
        } else {
            platform = findPlatformByNameOrApiLevel(platformOrApiLevel);
            if (platform == null)
                throw new InvalidSdkException("Invalid SDK: Platform/API level " + platformOrApiLevel + " not available. This command should give you all you need:\n" + sdkPath.getAbsolutePath() + File.separator + "tools" + File.separator + "android update sdk --no-ui --obsolete --force");
        }
    }

    private Platform findPlatformByNameOrApiLevel(String platformOrApiLevel) {
        for (Platform p : availablePlatforms) {
            if (p.name.equals(platformOrApiLevel) || p.apiLevel.equals(platformOrApiLevel)) {
                return p;
            }
        }
        return null;
    }

    public enum Layout {LAYOUT_1_1, LAYOUT_1_5, LAYOUT_2_3}

    public Layout getLayout() {

        assertPathIsDirectory(sdkPath);

        final File platformTools = new File(sdkPath, PLATFORM_TOOLS_FOLDER_NAME);
        if (platformTools.exists() && platformTools.isDirectory()){
            return Layout.LAYOUT_2_3;
        }

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