115 lines
4.0 KiB
Java
115 lines
4.0 KiB
Java
package me.skymc.taboolib.fileutils;
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import java.io.*;
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import java.nio.charset.Charset;
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import java.nio.charset.UnsupportedCharsetException;
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/**
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* @author Unknown
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*/
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public class EncodeUtils {
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/**
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* 把指定文件或目录转换成指定的编码
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*
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* @param fileName 要转换的文件
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* @param fromCharsetName 源文件的编码
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* @param toCharsetName 要转换的编码
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* @throws Exception
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*/
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public static void convert(String fileName, String fromCharsetName, String toCharsetName) throws Exception {
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convert(new File(fileName), fromCharsetName, toCharsetName, null);
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}
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/**
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* 把指定文件或目录转换成指定的编码
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*
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* @param file 要转换的文件或目录
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* @param fromCharsetName 源文件的编码
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* @param toCharsetName 要转换的编码
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* @throws Exception
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*/
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public static void convert(File file, String fromCharsetName, String toCharsetName) throws Exception {
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convert(file, fromCharsetName, toCharsetName, null);
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}
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/**
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* 把指定文件或目录转换成指定的编码
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*
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* @param fromCharsetName 源文件的编码
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* @param toCharsetName 转换的编码
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* @param filter 文件名过滤器
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* @throws Exception
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*/
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public static void convert(String fileName, String fromCharsetName, String toCharsetName, FilenameFilter filter) throws Exception {
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convert(new File(fileName), fromCharsetName, toCharsetName, filter);
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}
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/**
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* 把指定文件或目录转换成指定的编码
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*
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* @param file 要转换的文件或目录
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* @param fromCharsetName 源文件的编码
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* @param toCharsetName 要转换的编码
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* @param filter 文件名过滤器
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* @throws Exception
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*/
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public static void convert(File file, String fromCharsetName, String toCharsetName, FilenameFilter filter) throws Exception {
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if (file.isDirectory()) {
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File[] fileList;
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if (filter == null) {
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fileList = file.listFiles();
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} else {
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fileList = file.listFiles(filter);
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}
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for (File f : fileList) {
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convert(f, fromCharsetName, toCharsetName, filter);
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}
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} else {
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if (filter == null || filter.accept(file.getParentFile(), file.getName())) {
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String fileContent = getFileContentFromCharset(file, fromCharsetName);
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saveFile2Charset(file, toCharsetName, fileContent);
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}
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}
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}
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/**
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* 以指定编码方式读取文件，返回文件内容
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*
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* @param file 要转换的文件
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* @param fromCharsetName 源文件的编码
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* @return
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* @throws Exception
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*/
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public static String getFileContentFromCharset(File file, String fromCharsetName) throws Exception {
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if (!Charset.isSupported(fromCharsetName)) {
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throw new UnsupportedCharsetException(fromCharsetName);
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}
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InputStream inputStream = new FileInputStream(file);
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InputStreamReader reader = new InputStreamReader(inputStream, fromCharsetName);
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char[] chs = new char[(int) file.length()];
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reader.read(chs);
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String str = new String(chs).trim();
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reader.close();
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return str;
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}
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/**
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* 以指定编码方式写文本文件，存在会覆盖
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*
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* @param file 要写入的文件
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* @param toCharsetName 要转换的编码
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* @param content 文件内容
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* @throws Exception
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*/
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public static void saveFile2Charset(File file, String toCharsetName, String content) throws Exception {
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if (!Charset.isSupported(toCharsetName)) {
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throw new UnsupportedCharsetException(toCharsetName);
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}
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OutputStream outputStream = new FileOutputStream(file);
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OutputStreamWriter outWrite = new OutputStreamWriter(outputStream, toCharsetName);
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outWrite.write(content);
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outWrite.close();
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}
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}
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