233 lines
7.5 KiB
Java
233 lines
7.5 KiB
Java
/*
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* Copyright (C) 2017 wangchenyan
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the
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* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package code.name.monkey.retromusic.lyrics;
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import android.animation.ValueAnimator;
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import android.text.TextUtils;
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import android.text.format.DateUtils;
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import java.io.BufferedReader;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.lang.reflect.Field;
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import java.net.HttpURLConnection;
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import java.net.URL;
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import java.nio.charset.StandardCharsets;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Locale;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 工具类
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*/
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class LrcUtils {
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private static final Pattern PATTERN_LINE = Pattern.compile("((\\[\\d\\d:\\d\\d\\.\\d{2,3}\\])+)(.+)");
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private static final Pattern PATTERN_TIME = Pattern.compile("\\[(\\d\\d):(\\d\\d)\\.(\\d{2,3})\\]");
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/**
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* 从文件解析双语歌词
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*/
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static List<LrcEntry> parseLrc(File[] lrcFiles) {
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if (lrcFiles == null || lrcFiles.length != 2 || lrcFiles[0] == null) {
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return null;
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}
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File mainLrcFile = lrcFiles[0];
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File secondLrcFile = lrcFiles[1];
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List<LrcEntry> mainEntryList = parseLrc(mainLrcFile);
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List<LrcEntry> secondEntryList = parseLrc(secondLrcFile);
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if (mainEntryList != null && secondEntryList != null) {
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for (LrcEntry mainEntry : mainEntryList) {
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for (LrcEntry secondEntry : secondEntryList) {
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if (mainEntry.getTime() == secondEntry.getTime()) {
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mainEntry.setSecondText(secondEntry.getText());
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}
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}
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}
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}
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return mainEntryList;
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}
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/**
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* 从文件解析歌词
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*/
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private static List<LrcEntry> parseLrc(File lrcFile) {
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if (lrcFile == null || !lrcFile.exists()) {
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return null;
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}
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List<LrcEntry> entryList = new ArrayList<>();
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try {
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BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(lrcFile), StandardCharsets.UTF_8));
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String line;
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while ((line = br.readLine()) != null) {
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List<LrcEntry> list = parseLine(line);
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if (list != null && !list.isEmpty()) {
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entryList.addAll(list);
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}
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}
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br.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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Collections.sort(entryList);
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return entryList;
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}
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/**
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* 从文本解析双语歌词
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*/
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static List<LrcEntry> parseLrc(String[] lrcTexts) {
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if (lrcTexts == null || lrcTexts.length != 2 || TextUtils.isEmpty(lrcTexts[0])) {
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return null;
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}
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String mainLrcText = lrcTexts[0];
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String secondLrcText = lrcTexts[1];
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List<LrcEntry> mainEntryList = parseLrc(mainLrcText);
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List<LrcEntry> secondEntryList = parseLrc(secondLrcText);
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if (mainEntryList != null && secondEntryList != null) {
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for (LrcEntry mainEntry : mainEntryList) {
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for (LrcEntry secondEntry : secondEntryList) {
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if (mainEntry.getTime() == secondEntry.getTime()) {
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mainEntry.setSecondText(secondEntry.getText());
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}
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}
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}
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}
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return mainEntryList;
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}
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/**
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* 从文本解析歌词
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*/
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private static List<LrcEntry> parseLrc(String lrcText) {
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if (TextUtils.isEmpty(lrcText)) {
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return null;
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}
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if (lrcText.startsWith("\uFEFF")) {
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lrcText = lrcText.replace("\uFEFF", "");
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}
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List<LrcEntry> entryList = new ArrayList<>();
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String[] array = lrcText.split("\\n");
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for (String line : array) {
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List<LrcEntry> list = parseLine(line);
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if (list != null && !list.isEmpty()) {
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entryList.addAll(list);
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}
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}
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Collections.sort(entryList);
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return entryList;
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}
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/**
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* 获取网络文本，需要在工作线程中执行
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*/
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static String getContentFromNetwork(String url, String charset) {
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String lrcText = null;
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try {
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URL _url = new URL(url);
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HttpURLConnection conn = (HttpURLConnection) _url.openConnection();
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conn.setRequestMethod("GET");
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conn.setConnectTimeout(10000);
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conn.setReadTimeout(10000);
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if (conn.getResponseCode() == 200) {
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InputStream is = conn.getInputStream();
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ByteArrayOutputStream bos = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int len;
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while ((len = is.read(buffer)) != -1) {
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bos.write(buffer, 0, len);
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}
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is.close();
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bos.close();
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lrcText = bos.toString(charset);
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}
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} catch (Exception e) {
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e.printStackTrace();
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}
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return lrcText;
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}
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/**
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* 解析一行歌词
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*/
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private static List<LrcEntry> parseLine(String line) {
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if (TextUtils.isEmpty(line)) {
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return null;
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}
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line = line.trim();
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// [00:17.65]让我掉下眼泪的
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Matcher lineMatcher = PATTERN_LINE.matcher(line);
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if (!lineMatcher.matches()) {
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return null;
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}
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String times = lineMatcher.group(1);
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String text = lineMatcher.group(3);
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List<LrcEntry> entryList = new ArrayList<>();
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// [00:17.65]
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Matcher timeMatcher = PATTERN_TIME.matcher(times);
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while (timeMatcher.find()) {
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long min = Long.parseLong(timeMatcher.group(1));
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long sec = Long.parseLong(timeMatcher.group(2));
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String milString = timeMatcher.group(3);
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long mil = Long.parseLong(milString);
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// 如果毫秒是两位数，需要乘以10
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if (milString.length() == 2) {
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mil = mil * 10;
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}
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long time = min * DateUtils.MINUTE_IN_MILLIS + sec * DateUtils.SECOND_IN_MILLIS + mil;
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entryList.add(new LrcEntry(time, text));
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}
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return entryList;
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}
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/**
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* 转为[分:秒]
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*/
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static String formatTime(long milli) {
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int m = (int) (milli / DateUtils.MINUTE_IN_MILLIS);
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int s = (int) ((milli / DateUtils.SECOND_IN_MILLIS) % 60);
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String mm = String.format(Locale.getDefault(), "%02d", m);
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String ss = String.format(Locale.getDefault(), "%02d", s);
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return mm + ":" + ss;
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}
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static void resetDurationScale() {
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try {
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Field mField = ValueAnimator.class.getDeclaredField("sDurationScale");
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mField.setAccessible(true);
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mField.setFloat(null, 1);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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} |