Java Code Examples for net.lingala.zip4j.progress.ProgressMonitor#STATE_BUSY

/**
 * Extracts a specific file from the zip file to the destination path.
 * If destination path is invalid, then this method throws an exception.
 * @param fileHeader
 * @param destPath
 * @param unzipParameters
 * @param newFileName
 * @throws ZipException
 */
public void extractFile(FileHeader fileHeader, String destPath, 
		UnzipParameters unzipParameters, String newFileName) throws ZipException {
	
	if (fileHeader == null) {
		throw new ZipException("input file header is null, cannot extract file");
	}
	
	if (!Zip4jUtil.isStringNotNullAndNotEmpty(destPath)) {
		throw new ZipException("destination path is empty or null, cannot extract file");
	}
	
	readZipInfo();
	
	if (progressMonitor.getState() == ProgressMonitor.STATE_BUSY) {
		throw new ZipException("invalid operation - Zip4j is in busy state");
	}
	
	fileHeader.extractFile(zipModel, destPath, unzipParameters, newFileName, progressMonitor, runInThread);
	
}
 

/**
 * Adds the list of input files to the zip file. If zip file does not exist, then 
 * this method creates a new zip file. Parameters such as compression type, etc
 * can be set in the input parameters.
 * @param sourceFileList
 * @param parameters
 * @throws ZipException
 */
public void addFiles(ArrayList sourceFileList, ZipParameters parameters) throws ZipException {
	
	checkZipModel();
	
	if (this.zipModel == null) {
		throw new ZipException("internal error: zip model is null");
	}
	
	if (sourceFileList == null) {
		throw new ZipException("input file ArrayList is null, cannot add files");
	}
	
	if (!Zip4jUtil.checkArrayListTypes(sourceFileList, InternalZipConstants.LIST_TYPE_FILE)) {
		throw new ZipException("One or more elements in the input ArrayList is not of type File");
	}
	
	if (parameters == null) {
		throw new ZipException("input parameters are null, cannot add files to zip");
	}
	
	if (progressMonitor.getState() == ProgressMonitor.STATE_BUSY) {
		throw new ZipException("invalid operation - Zip4j is in busy state");
	}
	
	if (Zip4jUtil.checkFileExists(file)) {
		if (zipModel.isSplitArchive()) {
			throw new ZipException("Zip file already exists. Zip file format does not allow updating split/spanned files");
		}
	}
	
	ZipEngine zipEngine = new ZipEngine(zipModel);
	zipEngine.addFiles(sourceFileList, parameters, progressMonitor, runInThread);
}
 

/**
 * Extracts all the files in the given zip file to the input destination path.
 * If zip file does not exist or destination path is invalid then an 
 * exception is thrown.
 * @param destPath
 * @param unzipParameters
 * @throws ZipException
 */
public void extractAll(String destPath, 
		UnzipParameters unzipParameters) throws ZipException {
	
	if (!Zip4jUtil.isStringNotNullAndNotEmpty(destPath)) {
		throw new ZipException("output path is null or invalid");
	}
	
	if (!Zip4jUtil.checkOutputFolder(destPath)) {
		throw new ZipException("invalid output path");
	}
	
	if (zipModel == null) {
		readZipInfo();
	}
	
	// Throw an exception if zipModel is still null
	if (zipModel == null) {
		throw new ZipException("Internal error occurred when extracting zip file");
	}
	
	if (progressMonitor.getState() == ProgressMonitor.STATE_BUSY) {
		throw new ZipException("invalid operation - Zip4j is in busy state");
	}
	
	Unzip unzip = new Unzip(zipModel);
	unzip.extractAll(unzipParameters, destPath, progressMonitor, runInThread);
	
}
 

/**
 * Extracts a specific file from the zip file to the destination path. 
 * This method first finds the necessary file header from the input file name.
 * <br><br>
 * File name is relative file name in the zip file. For example if a zip file contains
 * a file "a.txt", then to extract this file, input file name has to be "a.txt". Another
 * example is if there is a file "b.txt" in a folder "abc" in the zip file, then the
 * input file name has to be abc/b.txt
 * <br><br>
 * If newFileName is not null or empty, newly created file name will be replaced by 
 * the value in newFileName. If this value is null, then the file name will be the 
 * value in FileHeader.getFileName
 * <br><br>
 * Throws an exception if file header could not be found for the given file name or if 
 * the destination path is invalid
 * @param fileName
 * @param destPath
 * @param unzipParameters
 * @param newFileName
 * @throws ZipException
 */
public void extractFile(String fileName, String destPath, 
		UnzipParameters unzipParameters, String newFileName) throws ZipException {
	
	if (!Zip4jUtil.isStringNotNullAndNotEmpty(fileName)) {
		throw new ZipException("file to extract is null or empty, cannot extract file");
	}
	
	if (!Zip4jUtil.isStringNotNullAndNotEmpty(destPath)) {
		throw new ZipException("destination string path is empty or null, cannot extract file");
	}
	
	readZipInfo();
	
	FileHeader fileHeader = Zip4jUtil.getFileHeader(zipModel, fileName);
	
	if (fileHeader == null) {
		throw new ZipException("file header not found for given file name, cannot extract file");
	}
	
	if (progressMonitor.getState() == ProgressMonitor.STATE_BUSY) {
		throw new ZipException("invalid operation - Zip4j is in busy state");
	}
	
	fileHeader.extractFile(zipModel, destPath, unzipParameters, newFileName, progressMonitor, runInThread);
	
}