private ProgressMonitorInputStream getMonitorableStream(File file, String message) {
try {
FileInputStream stream = new FileInputStream(file);
if (stream == null) {
System.out.println("null on " + file.getCanonicalPath());
}
final ProgressMonitorInputStream pmis = new ProgressMonitorInputStream(this, message, stream);
ProgressMonitor progress = pmis.getProgressMonitor();
progress.setMillisToDecideToPopup(1);
progress.setMillisToPopup(1);
return pmis;
} catch (IOException e) {
showError("could not open " + file.getName());
e.printStackTrace();
return null;
}
}
private void doSave() {
myFile = doRead();
if (myFile == null) {
return;
}
String name = myFile.getName();
showMessage("compressing " + name);
String newName =
JOptionPane.showInputDialog(this, "Name of compressed file", name + HUFF_SUFFIX);
if (newName == null) {
return;
}
String path = null;
try {
path = myFile.getCanonicalPath();
} catch (IOException e) {
showError("trouble with file canonicalizing");
return;
}
int pos = path.lastIndexOf(name);
newName = path.substring(0, pos) + newName;
final File file = new File(newName);
try {
final FileOutputStream out = new FileOutputStream(file);
ProgressMonitorInputStream temp = null;
if (myFast) {
temp = getMonitorableStream(getFastByteReader(myFile), "compressing bits...");
} else {
temp = getMonitorableStream(myFile, "compressing bits ...");
}
final ProgressMonitorInputStream pmis = temp;
final ProgressMonitor progress = pmis.getProgressMonitor();
Thread fileWriterThread =
new Thread() {
public void run() {
try {
while (!myFirstReadingDone) {
try {
sleep(100);
} catch (InterruptedException e) {
// what to do?
HuffViewer.this.showError("Trouble in Thread " + e);
}
}
myModel.compress(pmis, out, myForce);
} catch (IOException e) {
HuffViewer.this.showError("compression exception\n " + e);
cleanUp(file);
// e.printStackTrace();
}
if (progress.isCanceled()) {
HuffViewer.this.showError("compression cancelled");
cleanUp(file);
}
}
};
fileWriterThread.start();
} catch (FileNotFoundException e) {
showError("could not open " + file.getName());
e.printStackTrace();
}
myFile = null;
}
private void doDecode() {
File file = null;
showMessage("uncompressing");
try {
int retval = ourChooser.showOpenDialog(null);
if (retval != JFileChooser.APPROVE_OPTION) {
return;
}
file = ourChooser.getSelectedFile();
String name = file.getName();
String uname = name;
if (name.endsWith(HUFF_SUFFIX)) {
uname = name.substring(0, name.length() - HUFF_SUFFIX.length()) + UNHUFF_SUFFIX;
} else {
uname = name + UNHUFF_SUFFIX;
}
String newName = JOptionPane.showInputDialog(this, "Name of uncompressed file", uname);
if (newName == null) {
return;
}
String path = file.getCanonicalPath();
int pos = path.lastIndexOf(name);
newName = path.substring(0, pos) + newName;
final File newFile = new File(newName);
ProgressMonitorInputStream temp = null;
if (myFast) {
temp = getMonitorableStream(getFastByteReader(file), "uncompressing bits ...");
} else {
temp = getMonitorableStream(file, "uncompressing bits...");
}
final ProgressMonitorInputStream stream = temp;
final ProgressMonitor progress = stream.getProgressMonitor();
final OutputStream out = new FileOutputStream(newFile);
Thread fileReaderThread =
new Thread() {
public void run() {
try {
myModel.uncompress(stream, out);
} catch (IOException e) {
cleanUp(newFile);
HuffViewer.this.showError("could not uncompress\n " + e);
// e.printStackTrace();
}
if (progress.isCanceled()) {
cleanUp(newFile);
HuffViewer.this.showError("reading cancelled");
}
}
};
fileReaderThread.start();
} catch (FileNotFoundException e) {
showError("could not open " + file.getName());
e.printStackTrace();
} catch (IOException e) {
showError("IOException, uncompression halted from viewer");
e.printStackTrace();
}
}
