Flutter 解压 与解压中文遇到的编码问题

今天寻思寻思写点啥,不知道写点啥,想起差不多一年前魔改了个flutter压缩库.

地址:  https://github.com/jun7572/flutter_zip.git

背景是当时公司有好些zip,这些zip的文件头读不出来还是咋地.结果人家的压缩库根本解压不了.我改了这个压缩库默认读不出的话就是使用gbk,就能解压了.

andriod 这边是 

package com.june.flutterzip;

import android.text.TextUtils;

import android.util.Log;

import org.zeroturnaround.zip.ZipEntryCallback;

import org.zeroturnaround.zip.ZipInfoCallback;

import org.zeroturnaround.zip.ZipUtil;

import org.zeroturnaround.zip.commons.FileUtils;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.io.InputStream;

import java.nio.charset.Charset;

import java.util.HashMap;

import java.util.Map;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;

import java.util.zip.ZipInputStream;

import io.flutter.plugin.common.MethodChannel;

public class ArchiveManager {

static private  long unziplong=0;

    static private  long filesize=0;

    static void unzip(String unzipPath, final String outPath,final MethodChannel channel,final MethodChannel.Result result){

unziplong=0;

//        ZipUtil.unpack(new File(unzipPath), new File(outPath), Charset.forName("GBK"));

//判断编码

        String s=null;

        try {

s = codeString(unzipPath);

            Log.e("test","编码为="+s);

        }catch (Exception e) {

e.printStackTrace();

        }

if(TextUtils.isEmpty(s)){

s="GBK";

        }

//获取大小

        File file =new File(unzipPath);

        try {

ZipFile zf=new ZipFile(unzipPath);

            int size = zf.size();

            filesize=size;

            Log.e("test","文件数量="+size);

        }catch (IOException e) {

e.printStackTrace();

        }

//解压

        ZipUtil.iterate(file, new ZipEntryCallback() {

@Override

public void process(InputStream in, ZipEntry zipEntry)throws IOException {

unziplong++;

                File file =new File(outPath,zipEntry.getName());

                    if (zipEntry.isDirectory()) {

FileUtils.forceMkdir(file);

                    }else {

FileUtils.forceMkdir(file.getParentFile());

                        FileUtils.copy(in, file);

                    }

Map map=new HashMap<>();

                map.put("total",filesize);

                map.put("percent",unziplong);

//                channel.invokeMethod("process",map);

              if(filesize==unziplong){

result.success(null);

              }

}

},Charset.forName(s));

        //

    }

private static String codeString(String fileName)throws Exception {

BufferedInputStream bin =new BufferedInputStream(new FileInputStream(

fileName));

        int p = (bin.read() <<8) + bin.read();

        String code =null;

        switch (p) {

case 0xefbb:

code ="UTF-8";

break;

            case 0xfffe:

code ="Unicode";

break;

            case 0xfeff:

code ="UTF-16BE";

break;

            default:

code ="GBK";

        }

return code;

    }

}

ios 这边是

if (floor(NSFoundationVersionNumber)> NSFoundationVersionNumber10_9_2) {

#endif

                    // supported encodings are in [NSString availableStringEncodings]

                  NSArray<NSNumber*> *encodings=@[@(kCFStringEncodingMacChineseSimp), @(kCFStringEncodingShiftJIS)];

for (NSNumber*encoding in encodings) {

strPath= [NSString stringWithCString:filename encoding:(NSStringEncoding)CFStringConvertEncodingToNSStringEncoding(encoding.unsignedIntValue)];

if (strPath) {

break;

}

}

}else {

// fallback to a simple manual detect for macOS 10.9 or older

                    NSArray<NSNumber*> *encodings=@[@(kCFStringEncodingMacChineseSimp), @(kCFStringEncodingShiftJIS)];

for (NSNumber*encoding in encodings) {

strPath= [NSString stringWithCString:filename encoding:(NSStringEncoding)CFStringConvertEncodingToNSStringEncoding(encoding.unsignedIntValue)];

if (strPath) {

break;

}

}

}

都是读不出来的时候,就默认使用中文的编码.

attention!!! 注意了!!!这个地址基本我不会维护了,没这时间精力.有用得话就fork去.

希望能帮助同样遇到问题的铁字./滑稽