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Posted to dev@pdfbox.apache.org by "simon steiner (JIRA)" <ji...@apache.org> on 2018/09/20 11:01:00 UTC
[jira] [Comment Edited] (PDFBOX-4319) Parsing 100000 page pdf is
slow
[ https://issues.apache.org/jira/browse/PDFBOX-4319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16621831#comment-16621831 ]
simon steiner edited comment on PDFBOX-4319 at 9/20/18 11:00 AM:
-----------------------------------------------------------------
Much better
was (Author: ssteiner1):
Still seems slow
> 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
> Affects Versions: 3.0.0 PDFBox
> Reporter: simon steiner
> Priority: Major
> Attachments: out.pdf.zip
>
>
> 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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