/**
* @param entry instance of ZipEntry
* @return
*/
public InputStream getXMLChunkStream(ZipEntry entry) {
try {
if (pptxFilesStreams != null) {
if (entry != null && entry.getName() != null && entry.getName().trim().length() > 0) {
return (InputStream) pptxFilesStreams.get(entry.getName());
}
}
} catch (Exception ex) {
DEBUG.errorPrint(
"PPTX - Could not get zip entry: " + entry.getName() + " Reason: " + ex.getMessage());
return null;
}
return null;
}
/**
* @param fileStream of pptx file
* @return true if pptx file is unzipped, otherwise false
*/
public boolean unzipFileAndStoreStreams(InputStream fileStream) {
ZipEntry currentEntry = null;
this.pptxFilesStreams.clear();
this.pptxZipStreamFile = new ZipInputStream(fileStream);
try {
while (true) {
currentEntry = this.pptxZipStreamFile.getNextEntry();
if (currentEntry != null) {
String name = currentEntry.getName();
this.PPTXEntries.put(name, currentEntry);
long bufferSize = currentEntry.getSize();
Long bufferSizeLong = new Long(bufferSize);
int bufferSizeIntValue = bufferSizeLong.intValue();
bufferSizeLong = null;
byte[] buffer = new byte[bufferSizeIntValue];
byte[] readBuffer = new byte[bufferSizeIntValue];
int bytesRead = 0;
while (bytesRead < bufferSizeIntValue) {
int currBytesRead = this.pptxZipStreamFile.read(readBuffer, 0, bufferSizeIntValue);
for (int index = 0; index < currBytesRead; index++) {
buffer[bytesRead] = readBuffer[index];
bytesRead++;
}
}
ByteArrayInputStream fileBytesStream = new ByteArrayInputStream(buffer);
this.pptxFilesStreams.put(name, fileBytesStream);
} else {
break;
}
}
} catch (Exception ex) {
DEBUG.errorPrint("PPTX - Could not unzip pptx source file - " + ex.getMessage());
return false;
}
return true;
}