Java tutorial
/* * ****************************************************************************** * * Copyright 2015 See AUTHORS file. * * * * 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.uwsoft.editor.utils; import com.badlogic.gdx.files.FileHandle; import com.badlogic.gdx.graphics.g2d.TextureAtlas; import org.apache.commons.io.FileUtils; import org.apache.commons.io.FilenameUtils; import java.io.File; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; /** * Created by azakhary on 7/22/2015. */ public class ImportUtils { private static ImportUtils instance; public static final int TYPE_MIXED = -2; public static final int TYPE_UNCKNOWN = -1; public static final int TYPE_UNSUPPORTED = 0; public static final int TYPE_IMAGE = 1; public static final int TYPE_ANIMATION_PNG_SEQUENCE = 2; public static final int TYPE_SPRITE_ANIMATION_ATLAS = 3; public static final int TYPE_SPINE_ANIMATION = 4; public static final int TYPE_SPRITER_ANIMATION = 5; public static final int TYPE_TTF_FONT = 6; public static final int TYPE_BITMAP_FONT = 7; public static final int TYPE_PARTICLE_EFFECT = 8; public static final int TYPE_TEXTURE_ATLAS = 9; public static final int TYPE_SHADER = 10; private ArrayList<Integer> supportedTypes = new ArrayList<>(); private ImportUtils() { supportedTypes.add(TYPE_IMAGE); supportedTypes.add(TYPE_ANIMATION_PNG_SEQUENCE); supportedTypes.add(TYPE_SPRITE_ANIMATION_ATLAS); supportedTypes.add(TYPE_SPINE_ANIMATION); supportedTypes.add(TYPE_SPRITER_ANIMATION); supportedTypes.add(TYPE_PARTICLE_EFFECT); supportedTypes.add(TYPE_SHADER); // TODO: not yet supported //supportedTypes.add(TYPE_TEXTURE_ATLAS); //supportedTypes.add(TYPE_TTF_FONT); //supportedTypes.add(TYPE_BITMAP_FONT); } public static ImportUtils getInstance() { if (instance == null) { instance = new ImportUtils(); } return instance; } public static int getImportType(String[] paths) { int mainType = TYPE_MIXED; String[] names = new String[paths.length]; for (int i = 0; i < paths.length; i++) { String path = paths[i]; int type = getFileType(path); if (i == 0) mainType = type; if (mainType != type) { return TYPE_MIXED; } names[i] = FilenameUtils.getBaseName(path); } if (mainType == TYPE_IMAGE) { // check they are a PNG sequence; boolean isSequence = isAnimationSequence(names); if (isSequence) { mainType = TYPE_ANIMATION_PNG_SEQUENCE; } } if (mainType > 0 && !ImportUtils.getInstance().supportedTypes.contains(mainType)) { mainType = TYPE_UNSUPPORTED; } return mainType; } public static int getFileType(String path) { int type = checkFileTypeByExtension(path); if (type == TYPE_UNCKNOWN) { // we have to check by getting into the file type = checkFileTypeByContent(path); } return type; } public static int checkFileTypeByExtension(String path) { String ext = FilenameUtils.getExtension(path).toLowerCase(); if (ext.equals("png")) { return TYPE_IMAGE; } if (ext.equals("ttf")) { return TYPE_TTF_FONT; } if (ext.equals("scml")) { return TYPE_SPRITER_ANIMATION; } if (ext.equals("vert") || ext.equals("frag")) { return TYPE_SHADER; } return TYPE_UNCKNOWN; } public static int checkFileTypeByContent(String path) { File file = new File(path); long fileSizeInBytes = file.length(); // Convert the bytes to Kilobytes (1 KB = 1024 Bytes) long fileSizeInKB = fileSizeInBytes / 1024; if (fileSizeInKB > 1000) { return TYPE_UNCKNOWN; } int type = TYPE_UNCKNOWN; try { String contents = FileUtils.readFileToString(file); // checking for atlas file if (contents.contains("format: ") && contents.contains("filter: ") && contents.contains("xy: ")) { type = TYPE_TEXTURE_ATLAS; // need to figure out if atlas is animation or just files. TextureAtlas atlas = new TextureAtlas(new FileHandle(file)); String[] regionNames = new String[atlas.getRegions().size]; for (int i = 0; i < atlas.getRegions().size; i++) { regionNames[i] = atlas.getRegions().get(i).name; } boolean isSequence = isAnimationSequence(regionNames); if (isSequence) { type = TYPE_SPRITE_ANIMATION_ATLAS; } return type; } // checking for spine animation if (contents.contains("\"skeleton\":{\"") || contents.contains("\"skeleton\": { \"") || contents.contains("{\"bones\":[")) { type = TYPE_SPINE_ANIMATION; return type; } // checking for particle effect if (contents.contains("- Options - ") && contents.contains("- Image Path -") && contents.contains("- Duration -")) { type = TYPE_PARTICLE_EFFECT; return type; } } catch (IOException e) { } return type; } public static boolean isAnimationSequence(String[] names) { if (names.length < 2) return false; int[] sequenceArray = new int[names.length]; for (int i = 0; i < names.length; i++) { String name = names[i]; // try to remove extension if any if (name.indexOf(".") > 0) name = name.substring(0, name.indexOf(".")); try { int intValue = Integer.parseInt(name.replaceAll("[^0-9]", "")); sequenceArray[i] = intValue; } catch (Exception e) { sequenceArray[i] = -10; } } Arrays.sort(sequenceArray); if (sequenceArray[0] == 0 && sequenceArray[sequenceArray.length - 1] == sequenceArray.length - 1) { return true; } if (sequenceArray[0] == 1 && sequenceArray[sequenceArray.length - 1] == sequenceArray.length) { return true; } return false; } }