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Android-Download/Aria/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.DTaskWrapper;
import com.arialyy.aria.core.download.DownloadEntity;
import com.arialyy.aria.core.inf.AbsTaskWrapper;
import com.arialyy.aria.core.upload.UTaskWrapper;
import com.arialyy.aria.core.upload.UploadEntity;
import com.arialyy.aria.exception.ParamException;
import java.io.File;
import java.util.Arrays;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Created by Lyy on 2016/9/23.
* 检查帮助类
*/
public class CheckUtil {
private static final String TAG = "CheckUtil";
/**
* 检查ftp上传路径,如果ftp上传路径为空,抛出空指针异常
* 如果ftp上传路径不是以"ftp"或"sftp",抛出参数异常
*
* @param ftpUrl ftp上传路径
*/
public static void checkFtpUploadUrl(String ftpUrl) {
if (TextUtils.isEmpty(ftpUrl)) {
throw new ParamException("ftp上传路径为空");
} else if (!ftpUrl.startsWith("ftp") || !ftpUrl.startsWith("sftp")) {
throw new ParamException("ftp上传路径无效");
}
}
/**
* 判空
*/
public static void checkNull(Object obj) {
if (obj == null) throw new IllegalArgumentException("不能传入空对象");
}
/**
* 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");
}
/**
* 检查sql的expression是否合法
*
* @return false 不合法
*/
public static boolean checkSqlExpression(String... expression) {
if (expression.length == 0) {
ALog.e(TAG, "sql语句表达式不能为null");
return false;
}
if (expression.length == 1) {
ALog.e(TAG, String.format("表达式需要写入参数,参数信息:%s", Arrays.toString(expression)));
return false;
}
String where = expression[0];
if (!where.contains("?")) {
ALog.e(TAG, String.format("请在where语句的'='后编写?,参数信息:%s", Arrays.toString(expression)));
return false;
}
Pattern pattern = Pattern.compile("\\?");
Matcher matcher = pattern.matcher(where);
int count = 0;
while (matcher.find()) {
count++;
}
if (count < expression.length - 1) {
ALog.e(TAG, String.format("条件语句的?个数不能小于参数个数,参数信息:%s", Arrays.toString(expression)));
return false;
}
if (count > expression.length - 1) {
ALog.e(TAG, String.format("条件语句的?个数不能大于参数个数, 参数信息:%s", Arrays.toString(expression)));
return false;
}
return true;
}
/**
* 检查下载实体
*/
public static void checkDownloadEntity(DownloadEntity entity) {
checkUrlInvalidThrow(entity.getUrl());
entity.setUrl(entity.getUrl());
checkPath(entity.getDownloadPath());
}
/**
* 检测下载链接是否为null
*/
public static void checkPath(String path) {
if (TextUtils.isEmpty(path)) {
throw new IllegalArgumentException("保存路径不能为null");
}
}
/**
* 检测url是否合法,如果url不合法,将抛异常
*/
public static void checkTaskId(long taskId) {
if (taskId < 0) {
throw new IllegalArgumentException("任务id不能小于0");
}
}
/**
* 检测url是否合法,如果url不合法,将抛异常
*/
public static void checkUrlInvalidThrow(String url) {
if (TextUtils.isEmpty(url)) {
throw new IllegalArgumentException("url不能为null");
} else if (!url.startsWith("http") && !url.startsWith("ftp") && !url.startsWith("sftp")) {
throw new IllegalArgumentException("url错误");
}
int index = url.indexOf("://");
if (index == -1) {
throw new IllegalArgumentException("url不合法");
}
}
/**
* 检测url是否合法,如果url不合法,将抛出{@link IllegalArgumentException}异常
*/
public static void checkUrl(String url) {
if (TextUtils.isEmpty(url)) {
throw new NullPointerException("url为空");
} else if (!url.startsWith("http") && !url.startsWith("ftp") && !url.startsWith("sftp")) {
throw new IllegalArgumentException(String.format("url【%s】错误", url));
}
int index = url.indexOf("://");
if (index == -1) {
throw new IllegalArgumentException(String.format("url【%s】不合法", url));
}
}
/**
* 检测url是否合法
*
* @return {@code true} 合法,{@code false} 非法
*/
public static boolean checkUrlNotThrow(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
*/
public static void checkDownloadUrls(List<String> urls) {
if (urls == null || urls.isEmpty()) {
throw new IllegalArgumentException("链接组不能为null");
}
}
/**
* 检查下载任务组保存路径
*/
public static void checkDownloadPaths(List<String> paths) {
if (paths == null || paths.isEmpty()) {
throw new IllegalArgumentException("链接保存路径不能为null");
}
}
/**
* 检测上传地址是否为null
*/
public static void checkUploadPath(String uploadPath) {
if (TextUtils.isEmpty(uploadPath)) {
throw new IllegalArgumentException("上传地址不能为null");
}
File file = new File(uploadPath);
if (!file.exists()) {
throw new IllegalArgumentException("上传文件不存在");
}
}
/**
* 检查任务实体
*/
public static void checkTaskEntity(AbsTaskWrapper entity) {
if (entity instanceof DTaskWrapper) {
checkDownloadTaskEntity(((DTaskWrapper) entity).getEntity());
} else if (entity instanceof UTaskWrapper) {
checkUploadTaskEntity(((UTaskWrapper) entity).getEntity());
}
}
/**
* 检查命令实体
*
* @param checkType 删除命令和停止命令不需要检查下载链接和保存路径
* @return {@code false}实体无效
*/
public static boolean checkCmdEntity(AbsTaskWrapper entity, boolean checkType) {
boolean b = false;
if (entity instanceof DTaskWrapper) {
DownloadEntity entity1 = ((DTaskWrapper) entity).getEntity();
if (entity1 == null) {
ALog.e(TAG, "下载实体不能为空");
} else if (checkType && TextUtils.isEmpty(entity1.getUrl())) {
ALog.e(TAG, "下载链接不能为空");
} else if (checkType && TextUtils.isEmpty(entity1.getDownloadPath())) {
ALog.e(TAG, "保存路径不能为空");
} else {
b = true;
}
} else if (entity instanceof UTaskWrapper) {
UploadEntity entity1 = ((UTaskWrapper) entity).getEntity();
if (entity1 == null) {
ALog.e(TAG, "上传实体不能为空");
} else if (TextUtils.isEmpty(entity1.getFilePath())) {
ALog.e(TAG, "上传文件路径不能为空");
} else {
b = true;
}
}
return b;
}
/**
* 检查上传实体是否合法
*/
private static void checkUploadTaskEntity(UploadEntity entity) {
if (entity == null) {
throw new NullPointerException("上传实体不能为空");
} else if (TextUtils.isEmpty(entity.getFilePath())) {
throw new IllegalArgumentException("上传文件路径不能为空");
} else if (TextUtils.isEmpty(entity.getFileName())) {
throw new IllegalArgumentException("上传文件名不能为空");
}
}
/**
* 检测下载实体是否合法
* 合法(true)
*
* @param entity 下载实体
*/
private static void checkDownloadTaskEntity(DownloadEntity entity) {
if (entity == null) {
throw new NullPointerException("下载实体不能为空");
} else if (TextUtils.isEmpty(entity.getUrl())) {
throw new IllegalArgumentException("下载链接不能为空");
} else if (TextUtils.isEmpty(entity.getFileName())) {
throw new NullPointerException("文件名不能为null");
} else if (TextUtils.isEmpty(entity.getDownloadPath())) {
throw new NullPointerException("文件保存路径不能为null");
}
}
}