cn.hutool.extra.compress.archiver.StreamArchiver Maven / Gradle / Ivy
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package cn.hutool.extra.compress.archiver;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.io.IORuntimeException;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.lang.Filter;
import cn.hutool.core.util.ArrayUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.extra.compress.CompressException;
import org.apache.commons.compress.archivers.ArchiveException;
import org.apache.commons.compress.archivers.ArchiveOutputStream;
import org.apache.commons.compress.archivers.ArchiveStreamFactory;
import org.apache.commons.compress.archivers.ar.ArArchiveOutputStream;
import org.apache.commons.compress.archivers.tar.TarArchiveOutputStream;
import org.apache.commons.compress.compressors.gzip.GzipCompressorOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.Charset;
/**
* 数据归档封装,归档即将几个文件或目录打成一个压缩包
* 支持的归档文件格式为:
*
* - {@link ArchiveStreamFactory#AR}
* - {@link ArchiveStreamFactory#CPIO}
* - {@link ArchiveStreamFactory#JAR}
* - {@link ArchiveStreamFactory#TAR}
* - {@link ArchiveStreamFactory#ZIP}
*
*
* @author looly
*/
public class StreamArchiver implements Archiver {
/**
* 创建归档器
*
* @param charset 编码
* @param archiverName 归档类型名称,见{@link ArchiveStreamFactory}
* @param file 归档输出的文件
* @return StreamArchiver
*/
public static StreamArchiver create(Charset charset, String archiverName, File file) {
return new StreamArchiver(charset, archiverName, file);
}
/**
* 创建归档器
*
* @param charset 编码
* @param archiverName 归档类型名称,见{@link ArchiveStreamFactory}
* @param out 归档输出的流
* @return StreamArchiver
*/
public static StreamArchiver create(Charset charset, String archiverName, OutputStream out) {
return new StreamArchiver(charset, archiverName, out);
}
private final ArchiveOutputStream out;
/**
* 构造
*
* @param charset 编码
* @param archiverName 归档类型名称,见{@link ArchiveStreamFactory}
* @param file 归档输出的文件
*/
public StreamArchiver(Charset charset, String archiverName, File file) {
this(charset, archiverName, FileUtil.getOutputStream(file));
}
/**
* 构造
*
* @param charset 编码
* @param archiverName 归档类型名称,见{@link ArchiveStreamFactory}
* @param targetStream 归档输出的流
*/
public StreamArchiver(Charset charset, String archiverName, OutputStream targetStream) {
if("tgz".equalsIgnoreCase(archiverName) || "tar.gz".equalsIgnoreCase(archiverName)){
//issue#I5J33E,支持tgz格式解压
try {
this.out = new TarArchiveOutputStream(new GzipCompressorOutputStream(targetStream));
} catch (IOException e) {
throw new IORuntimeException(e);
}
} else {
final ArchiveStreamFactory factory = new ArchiveStreamFactory(charset.name());
try {
this.out = factory.createArchiveOutputStream(archiverName, targetStream);
} catch (ArchiveException e) {
throw new CompressException(e);
}
}
//特殊设置
if(this.out instanceof TarArchiveOutputStream){
((TarArchiveOutputStream)out).setLongFileMode(TarArchiveOutputStream.LONGFILE_GNU);
} else if(this.out instanceof ArArchiveOutputStream){
((ArArchiveOutputStream)out).setLongFileMode(ArArchiveOutputStream.LONGFILE_BSD);
}
}
/**
* 将文件或目录加入归档包,目录采取递归读取方式按照层级加入
*
* @param file 文件或目录
* @param path 文件或目录的初始路径,null表示位于根路径
* @param filter 文件过滤器,指定哪些文件或目录可以加入,当{@link Filter#accept(Object)}为true时加入。
* @return this
* @throws IORuntimeException IO异常
*/
@Override
public StreamArchiver add(File file, String path, Filter filter) throws IORuntimeException {
try {
addInternal(file, path, filter);
} catch (IOException e) {
throw new IORuntimeException(e);
}
return this;
}
/**
* 结束已经增加的文件归档,此方法不会关闭归档流,可以继续添加文件
*
* @return this
*/
@Override
public StreamArchiver finish() {
try {
this.out.finish();
} catch (IOException e) {
throw new IORuntimeException(e);
}
return this;
}
@Override
public void close() {
try{
finish();
} catch (Exception ignore) {
//ignore
}
IoUtil.close(this.out);
}
/**
* 将文件或目录加入归档包,目录采取递归读取方式按照层级加入
*
* @param file 文件或目录
* @param path 文件或目录的初始路径,{@code null}表示位于根路径
* @param filter 文件过滤器,指定哪些文件或目录可以加入,当{@link Filter#accept(Object)}为true时加入。
*/
private void addInternal(File file, String path, Filter filter) throws IOException {
if (null != filter && false == filter.accept(file)) {
return;
}
final ArchiveOutputStream out = this.out;
final String entryName;
if(StrUtil.isNotEmpty(path)){
// 非空拼接路径,格式为:path/name
entryName = StrUtil.addSuffixIfNot(path, StrUtil.SLASH) + file.getName();
} else{
// 路径空直接使用文件名或目录名
entryName = file.getName();
}
out.putArchiveEntry(out.createArchiveEntry(file, entryName));
if (file.isDirectory()) {
// 目录遍历写入
final File[] files = file.listFiles();
if(ArrayUtil.isNotEmpty(files)){
for (File childFile : files) {
addInternal(childFile, entryName, filter);
}
} else {
out.closeArchiveEntry();
}
} else {
if (file.isFile()) {
// 文件直接写入
FileUtil.writeToStream(file, out);
}
out.closeArchiveEntry();
}
}
}