com.gitee.starblues.loader.utils.FilesUtils Maven / Gradle / Ivy
/**
* Copyright [2019-Present] [starBlues]
*
* 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.gitee.starblues.loader.utils;
import com.gitee.starblues.loader.LoaderConstant;
import java.io.File;
import java.io.IOException;
/**
* 文件工具类
*
* @author starBlues
* @since 3.0.0
* @version 3.0.2
*/
public class FilesUtils {
/**
* 获取存在的文件
*
* @param pathStr 文件路径
* @return File
*/
public static File getExistFile(String pathStr){
File file = new File(pathStr);
if(file.exists()){
return file;
}
return null;
}
/**
* 拼接file路径
*
* @param paths 拼接的路径
* @return 拼接的路径
*/
public static String joiningFilePath(String ...paths){
if(paths == null || paths.length == 0){
return "";
}
StringBuilder stringBuilder = new StringBuilder();
int length = paths.length;
for (int i = 0; i < length; i++) {
String path = paths[i];
if(ObjectUtils.isEmpty(path)) {
continue;
}
if(i > 0){
if(path.startsWith(File.separator) || path.startsWith("/") ||
path.startsWith("\\") || path.startsWith("//")){
stringBuilder.append(path);
} else {
stringBuilder.append(File.separator).append(path);
}
} else {
stringBuilder.append(path);
}
}
return stringBuilder.toString();
}
public static File createFile(String path) throws IOException {
try {
File file = new File(path);
File parentFile = file.getParentFile();
if(!parentFile.exists()){
if(!parentFile.mkdirs()){
throw new IOException("Create " + parentFile + " dir error");
}
}
if(file.createNewFile()){
return file;
}
throw new IOException("Create " + path + " file error");
} catch (Exception e){
throw new IOException("Create " + path + " file error");
}
}
/**
* 解决相对路径
* @param rootPath 根路径
* @param relativePath 以 ~ 开头的相对路径
* @return 处理后的路径
*/
public static String resolveRelativePath(String rootPath, String relativePath){
if(ObjectUtils.isEmpty(relativePath)){
return relativePath;
}
if(isRelativePath(relativePath)){
return joiningFilePath(rootPath, relativePath.replaceFirst(LoaderConstant.RELATIVE_SIGN, ""));
} else {
return relativePath;
}
}
/**
* 是否是相对路径
* @param path 路径
* @return true 为相对路径, false 未非相对路径
*/
public static boolean isRelativePath(String path){
if(ObjectUtils.isEmpty(path)){
return false;
}
return path.startsWith(LoaderConstant.RELATIVE_SIGN);
}
}