Error String index out of range: -1 in PDFLayoutTextStripper

[Jaumexr]

Hi,
Hi have this code, with attached PDF to test.
public void doStrip() {
String string = null;
try {
PDFParser pdfParser = new PDFParser(new RandomAccessFile(new File("D:/escaner/errorsPDFBOX/AN20-0149-0602201842.pdf"), "r"));
pdfParser.parse();
PDDocument pdDocument = new PDDocument(pdfParser.getDocument());
PDFTextStripper pdfTextStripper = new PDFLayoutTextStripper();
string = pdfTextStripper.getText(pdDocument);
BufferedWriter writer = Files.newBufferedWriter(FileSystems.getDefault().getPath("D:/escaner","fichero.txt"), Charset.forName("UTF-8"));
writer.write(string);
writer.flush();
writer.close();
} catch (InvalidPasswordException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

AN20-0149-0602201842.pdf
I have this exception error:
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at java.lang.String.charAt(String.java:658)
at com.sagedillepasa.gestion.TextLine.isSpaceCharacterAtIndex(PDFLayoutTextStripper.java:269)
at com.sagedillepasa.gestion.TextLine.getNextValidIndex(PDFLayoutTextStripper.java:283)
at com.sagedillepasa.gestion.TextLine.computeIndexForCharacter(PDFLayoutTextStripper.java:263)
at com.sagedillepasa.gestion.TextLine.writeCharacterAtIndex(PDFLayoutTextStripper.java:229)
at com.sagedillepasa.gestion.PDFLayoutTextStripper.writeLine(PDFLayoutTextStripper.java:127)
at com.sagedillepasa.gestion.PDFLayoutTextStripper.writeTextPositionList(PDFLayoutTextStripper.java:157)
at com.sagedillepasa.gestion.PDFLayoutTextStripper.iterateThroughTextList(PDFLayoutTextStripper.java:152)
at com.sagedillepasa.gestion.PDFLayoutTextStripper.writePage(PDFLayoutTextStripper.java:96)
at org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:392)
at com.sagedillepasa.gestion.PDFLayoutTextStripper.processPage(PDFLayoutTextStripper.java:80)
at org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:319)
at org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:266)
at org.apache.pdfbox.text.PDFTextStripper.getText(PDFTextStripper.java:227)
at com.sagedillepasa.gestion.test.doStrip(test.java:44)
at com.sagedillepasa.gestion.test.main(test.java:61)

[jenka13all]

I have the exact same issue with the example code - it doesn't work.

[Athou]

I'm encountering the same issue.
The exception seems to happen because index is 0 here so isSpaceCharacterAtIndex is called with -1.
Changing the condition to !isCharacterPartOfPreviousWord && index > 0 && this.isSpaceCharacterAtIndex(index - 1) in the condition seems to fix the issue.