[
https://issues.apache.org/jira/browse/PDFBOX-4319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
simon steiner updated PDFBOX-4319:
----------------------------------
Description:
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}
was:
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}
> 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
> Priority: Major
>
> 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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