public final void readInputStream(InputStream input) throws IOException, ID3ReaderException {
int rc;
readerPosition = 0;
char[] tagHeaderSource = readBytes(input, HEADER_LENGTH);
tagHeader = createTagHeader(tagHeaderSource);
if (tagHeader == null) {
onNoTagHeaderFound();
} else {
rc = onStartTagHeader(tagHeader);
if (rc == ACTION_SKIP) {
onEndTag();
} else {
while (readerPosition < tagHeader.getSize()) {
FrameHeader frameHeader = createFrameHeader(readBytes(input, HEADER_LENGTH));
if (checkForNullString(frameHeader.getId())) {
break;
} else {
rc = onStartFrameHeader(frameHeader, input);
if (rc == ACTION_SKIP) {
if (frameHeader.getSize() + readerPosition > tagHeader.getSize()) {
break;
} else {
skipBytes(input, frameHeader.getSize());
}
}
}
}
onEndTag();
}
}
}
