private void loadStyleSheet() throws IOException, CoreException {
try {
IStyleSheet styleSheet =
((StyleSheetBuilderImpl) Core.getStyleSheetBuilder()).loadFromInputSource(source, this);
((StyleSheetImpl) styleSheet).setManifest(manifest);
workbook.setStyleSheet((StyleSheetImpl) styleSheet);
} catch (IOException e) {
throw e;
} catch (CoreException e) {
if (e.getType() != Core.ERROR_NO_SUCH_ENTRY) throw e;
}
}
