/** {@inheritDoc} */
protected void determineEncoding() {
String cmapName = null;
COSName encodingName = null;
COSBase encoding = getEncoding();
Encoding fontEncoding = null;
if (encoding != null) {
if (encoding instanceof COSName) {
if (cmap == null) {
encodingName = (COSName) encoding;
cmap = cmapObjects.get(encodingName.getName());
if (cmap == null) {
cmapName = encodingName.getName();
}
}
if (cmap == null && cmapName != null) {
try {
fontEncoding = EncodingManager.INSTANCE.getEncoding(encodingName);
} catch (IOException exception) {
LOG.debug("Debug: Could not find encoding for " + encodingName);
}
}
} else if (encoding instanceof COSStream) {
if (cmap == null) {
COSStream encodingStream = (COSStream) encoding;
try {
cmap = parseCmap(null, encodingStream.getUnfilteredStream());
} catch (IOException exception) {
LOG.error("Error: Could not parse the embedded CMAP");
}
}
} else if (encoding instanceof COSDictionary) {
try {
fontEncoding = new DictionaryEncoding((COSDictionary) encoding);
} catch (IOException exception) {
LOG.error("Error: Could not create the DictionaryEncoding");
}
}
}
setFontEncoding(fontEncoding);
extractToUnicodeEncoding();
if (cmap == null && cmapName != null) {
String resourceName = resourceRootCMAP + cmapName;
try {
cmap = parseCmap(resourceRootCMAP, ResourceLoader.loadResource(resourceName));
if (cmap == null && encodingName == null) {
LOG.error("Error: Could not parse predefined CMAP file for '" + cmapName + "'");
}
} catch (IOException exception) {
LOG.error("Error: Could not find predefined CMAP file for '" + cmapName + "'");
}
}
}
/**
* This will get the logical content stream with none of the filters.
*
* @return the bytes of the logical (decoded) stream
* @throws IOException when encoding/decoding causes an exception
*/
public InputStream getUnfilteredStream() throws IOException {
Vector<InputStream> inputStreams = new Vector<InputStream>();
byte[] inbetweenStreamBytes = "\n".getBytes("ISO-8859-1");
for (int i = 0; i < streams.size(); i++) {
COSStream stream = (COSStream) streams.getObject(i);
inputStreams.add(stream.getUnfilteredStream());
// handle the case where there is no whitespace in the
// between streams in the contents array, without this
// it is possible that two operators will get concatenated
// together
inputStreams.add(new ByteArrayInputStream(inbetweenStreamBytes));
}
return new SequenceInputStream(inputStreams.elements());
}
