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Android-Download/PublicComponent/src/main/java/com/arialyy/aria/util/CheckUtil.java

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/*
* Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
*
* 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.arialyy.aria.util;
import android.text.TextUtils;
import com.arialyy.aria.core.download.DownloadEntity;
import com.arialyy.aria.core.inf.IRecordHandler;
import com.arialyy.aria.orm.DbEntity;
import java.lang.reflect.Modifier;
import java.util.List;
/**
* Created by Lyy on 2016/9/23.
* 检查帮助类
*/
public class CheckUtil {
private static final String TAG = "CheckUtil";
/**
* 检查和处理路径冲突
*
* @param isForceDownload true,如果路径冲突,将删除其它任务的记录的
* @param filePath 文件保存路径
* @return false 任务不再执行,true 任务继续执行
*/
public static boolean checkAndHandlePathConflicts(boolean isForceDownload, String filePath) {
if (DbEntity.checkDataExist(DownloadEntity.class, "downloadPath=?", filePath)) {
if (!isForceDownload) {
ALog.e(TAG, String.format("下载失败,保存路径【%s】已经被其它任务占用,请设置其它保存路径", filePath));
return false;
} else {
ALog.w(TAG, String.format("保存路径【%s】已经被其它任务占用,当前任务将覆盖该路径的文件", filePath));
RecordUtil.delTaskRecord(filePath, IRecordHandler.TYPE_DOWNLOAD);
return true;
}
}
return true;
}
/**
* 检查成员类是否是静态和public
*/
public static void checkMemberClass(Class clazz) {
int modifiers = clazz.getModifiers();
if (!clazz.isMemberClass() || !Modifier.isStatic(modifiers) || Modifier.isPrivate(modifiers)) {
ALog.e(TAG, "为了防止内存泄漏,请使用静态的成员类(public static class xxx)或文件类(A.java)");
}
}
/**
* 检查分页数据,需要查询的页数,从1开始,如果page小于1 或 num 小于1,则抛出{@link NullPointerException}
*
* @param page 从1 开始
* @param num 每页数量
*/
public static void checkPageParams(int page, int num) {
if (page < 1 || num < 1) throw new NullPointerException("page和num不能小于1");
}
/**
* 检测url是否合法
*
* @return {@code true} 合法,{@code false} 非法
*/
public static boolean checkUrl(String url) {
if (TextUtils.isEmpty(url)) {
ALog.e(TAG, "url不能为null");
return false;
} else if (!url.startsWith("http") && !url.startsWith("ftp") && !url.startsWith("sftp")) {
ALog.e(TAG, "url【" + url + "】错误");
return false;
}
int index = url.indexOf("://");
if (index == -1) {
ALog.e(TAG, "url【" + url + "】不合法");
}
return true;
}
/**
* 检测下载链接组是否为null
*
* @return true 组合任务url为空
*/
public static boolean checkDownloadUrlsIsEmpty(List<String> urls) {
if (urls == null || urls.isEmpty()) {
ALog.e(TAG, "链接组不能为null");
return true;
}
return false;
}
/**
* 检测上传地址是否为null
*/
public static void checkUploadPathIsEmpty(String uploadPath) {
if (TextUtils.isEmpty(uploadPath)) {
throw new IllegalArgumentException("上传地址不能为null");
}
}
}