source: osm/applications/editors/josm/plugins/opendata/includes/org/j7zip/SevenZip/ArchiveExtractCallback.java

package org.j7zip.SevenZip;

import java.io.File;

import org.j7zip.SevenZip.Archive.IArchiveExtractCallback;
import org.j7zip.SevenZip.Archive.IInArchive;
import org.j7zip.SevenZip.Archive.SevenZipEntry;

public class ArchiveExtractCallback implements IArchiveExtractCallback // , ICryptoGetTextPassword,
{
    
    class OutputStream extends java.io.OutputStream {
        java.io.RandomAccessFile file;
        
        public OutputStream(java.io.RandomAccessFile f) {
            file = f;
        }
        
        public void close()  throws java.io.IOException {
            file.close();
            file = null;
        }
        /*
        public void flush()  throws java.io.IOException {
            file.flush();
        }
         */
        public void write(byte[] b)  throws java.io.IOException {
            file.write(b);
        }
        
        public void write(byte[] b, int off, int len)  throws java.io.IOException {
            file.write(b,off,len);
        }
        
        public void write(int b)  throws java.io.IOException {
            file.write(b);
        }
    }
    
    public int SetTotal(long size) {
        return HRESULT.S_OK;
    }
    
    public int SetCompleted(long completeValue) {
        return HRESULT.S_OK;
    }
    
    public void PrintString(String str) {
        System.out.print(str);
    }
    
    public void PrintNewLine() {
        System.out.println("");
    }
    public int PrepareOperation(int askExtractMode) {
        /*_extractMode = false;
        switch (askExtractMode) {
            case IInArchive.NExtract_NAskMode_kExtract:
                _extractMode = true;
        };*/
        switch (askExtractMode) {
            case IInArchive.NExtract_NAskMode_kExtract:
                PrintString("Extracting  ");
                break;
            case IInArchive.NExtract_NAskMode_kTest:
                PrintString("Testing     ");
                break;
            case IInArchive.NExtract_NAskMode_kSkip:
                PrintString("Skipping    ");
                break;
        };
        PrintString(_filePath);
        return HRESULT.S_OK;
    }
    
    public int SetOperationResult(int operationResult) throws java.io.IOException {
        switch(operationResult) {
            case IInArchive.NExtract_NOperationResult_kOK:
                break;
            default:
            {
                NumErrors++;
                PrintString("     ");
                switch(operationResult) {
                    case IInArchive.NExtract_NOperationResult_kUnSupportedMethod:
                        PrintString("Unsupported Method");
                        break;
                    case IInArchive.NExtract_NOperationResult_kCRCError:
                        PrintString("CRC Failed");
                        break;
                    case IInArchive.NExtract_NOperationResult_kDataError:
                        PrintString("Data Error");
                        break;
                    default:
                        PrintString("Unknown Error");
                }
                PrintNewLine();
            }
        }
            /*
            if(_outFileStream != null && _processedFileInfo.UTCLastWriteTimeIsDefined)
                _outFileStreamSpec->File.SetLastWriteTime(&_processedFileInfo.UTCLastWriteTime);
             */
        if (_outFileStream != null) _outFileStream.close(); // _outFileStream.Release();
            /*
            if (_extractMode && _processedFileInfo.AttributesAreDefined)
                NFile::NDirectory::MySetFileAttributes(_diskFilePath, _processedFileInfo.Attributes);
             */
        return HRESULT.S_OK;
    }
    
    java.io.OutputStream _outFileStream;
    
    public String outputDir = null;
    
    public int GetStream(int index,
            java.io.OutputStream [] outStream,
            int askExtractMode) throws java.io.IOException {
        
        outStream[0] = null;
        
        SevenZipEntry item = _archiveHandler.getEntry(index);
        _filePath = item.getName();
        _diskFilePath = outputDir == null ? _filePath : outputDir + File.separator + _filePath;
        
        file = new File(_diskFilePath);
        
        switch (askExtractMode) {
            case IInArchive.NExtract_NAskMode_kTest:
                return HRESULT.S_OK;
                
            case IInArchive.NExtract_NAskMode_kExtract:
                
                try {
                    isDirectory = item.isDirectory();
                    
                    if (isDirectory) {
                        if (file.isDirectory()) {
                            return HRESULT.S_OK;
                        }
                        if (file.mkdirs())
                            return HRESULT.S_OK;
                        else
                            return HRESULT.S_FALSE;
                    }
                    
                    
                    File dirs = file.getParentFile();
                    if (dirs != null) {
                        if (!dirs.isDirectory())
                            if (!dirs.mkdirs())
                                return HRESULT.S_FALSE;
                    }
                    
                    long pos = item.getPosition();
                    if (pos == -1) {
                        file.delete();
                    }
                    
                    java.io.RandomAccessFile outStr = new java.io.RandomAccessFile(_diskFilePath,"rw");
                    
                    if (pos != -1) {
                        outStr.seek(pos);
                    }
                    
                    outStream[0] = new OutputStream(outStr);
                } catch (java.io.IOException e) {
                    return HRESULT.S_FALSE;
                }
                
                return HRESULT.S_OK;
                
        }
        
        // other case : skip ...
        
        return HRESULT.S_OK;
        
    }
    
    org.j7zip.SevenZip.Archive.IInArchive _archiveHandler;  // IInArchive
    protected String _filePath;       // name inside archive
    String _diskFilePath;   // full path to file on disk
    protected File file;
    
    public long NumErrors;
    //boolean PasswordIsDefined;
    //String Password;
    //boolean _extractMode;
    
    boolean isDirectory;
    
    public ArchiveExtractCallback() { /*PasswordIsDefined = false;*/ }
    
    
    public void Init(org.j7zip.SevenZip.Archive.IInArchive archiveHandler) {
        NumErrors = 0;
        _archiveHandler = archiveHandler;
    }
    
}