Java tutorial
/* * Copyright (C) 2016 The Android Open Source Project * * 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.android.assetstudiolib; import static com.android.SdkConstants.DOT_XML; import com.android.annotations.NonNull; import com.android.annotations.Nullable; import com.android.annotations.VisibleForTesting; import com.google.common.collect.ImmutableMap; import com.google.common.collect.ImmutableSet; import java.util.Iterator; import java.util.Map; public final class AssetStudio { public static final String MATERIAL_DESIGN_ICONS_PATH = "images/material_design_icons/"; private static final Iterable<String> MATERIAL_DESIGN_ICON_CATEGORIES = ImmutableSet.of("action", "alert", "av", "communication", "content", "device", "editor", "file", "hardware", "image", "maps", "navigation", "notification", "places", "social", "toggle"); private AssetStudio() { } @Nullable public static String getPathForBasename(@NonNull String basename) { Generator generator = path -> GraphicGenerator.getResourcesNames(path, DOT_XML); return getBasenameToPathMap(generator).get(basename); } @NonNull @VisibleForTesting static Map<String, String> getBasenameToPathMap(@NonNull Generator generator) { ImmutableMap.Builder<String, String> builder = new ImmutableMap.Builder<>(); int dotXmlLength = DOT_XML.length(); for (String category : MATERIAL_DESIGN_ICON_CATEGORIES) { String path = MATERIAL_DESIGN_ICONS_PATH + category + '/'; for (Iterator<String> i = generator.getResourceNames(path); i.hasNext();) { String name = i.next(); builder.put(name.substring(0, name.length() - dotXmlLength), path + name); } } return builder.build(); } @VisibleForTesting interface Generator { @NonNull Iterator<String> getResourceNames(@NonNull String path); } }