simon steiner created PDFBOX-4319:
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Summary: Parsing 100000 page pdf is slow
Key: PDFBOX-4319
URL: https://issues.apache.org/jira/browse/PDFBOX-4319
Project: PDFBox
Issue Type: Bug
Components: Parsing
Reporter: simon steiner
Parsing 100000 page pdf is slow, how do i speed it up?
{code:java}
import org.apache.pdfbox.contentstream.operator.Operator;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.pdfparser.PDFStreamParser;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class CheckPDF {
public static void main(String[] args) throws IOException {
PDDocument doc = PDDocument.load(new File("out.pdf"));
for (int i=0; i<doc.getNumberOfPages(); i++) {
System.out.println(i);
PDPage page = doc.getPage(i);
PDFStreamParser parser = new PDFStreamParser(page.getContents());
parser.parse();
List<Object> it = parser.getTokens();
List<COSBase> arguments = new ArrayList<COSBase>();
for (Object o : it) {
if (o instanceof Operator) {
Operator op = (Operator)o;
if (op.getName().equals("Do")) {
COSName name = (COSName) arguments.get(0);
if (page.getResources().getXObject(name) == null) {
throw new RuntimeException(name + " not found");
}
}
arguments.clear();
} else {
arguments.add((COSBase)o);
}
}
}
doc.close();
}
}{code}
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