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https://issues.apache.org/jira/browse/PDFBOX-3749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15961240#comment-15961240
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Harun Reşit Zafer commented on PDFBOX-3749:
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No, that's not the issue. I extend the {{PDFTextStripper}} and overwrite the
{{void writeString(String text, List<TextPosition> textPositions)}}. Normally
this method is called for each line on the PDF and the {{List<TextPosition>
textPositions}} parameter includes every letter in the line including the space
characters. I know they really don't exist in a PDF but {{PDFTextStripper}}
creates a {{TextPosition}} object for them too. In the {{PDFTextStripper}} this
method is only called at inside the function {{private void
writeLine(List<WordWithTextPositions> line)}}. Which supports my assumption.
Here is how I overwrite this method.
@Override
protected void writeString(String text, List<TextPosition> textPositions)
throws IOException {
//If this method is called per line, I have no problem
//But for this document it is called per word
getStyles(textPositions);
for (TextPosition textPosition : textPositions) {
output.write(textPosition.getUnicode());
}
}
> void writeString(String text, List<TextPosition> textPositions) is not called
> per line
> --------------------------------------------------------------------------------------
>
> Key: PDFBOX-3749
> URL: https://issues.apache.org/jira/browse/PDFBOX-3749
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 2.0.4
> Environment: Windows 10 64-bit
> Reporter: Harun Reşit Zafer
> Priority: Minor
> Labels: extraction, style
> Attachments: contract_00105_SEDAR-marked-1.png,
> contract_00105_SEDAR.pdf
>
>
> We overwrote the {{void writeString(String text, List<TextPosition>
> textPositions)}} method of the {{PDFTextStripper}} to extract additional
> position and style information from the PDFs. We thought this method would be
> called per line and the elements of the parameter {{List<TextPosition>
> textPositions}} would be all the letters, including the spaces in a line.
> This is indeed the case for thousands of the documents. However, one
> particular document, this is not the case and the {{textPositions}} contains
> just the letters of a word and {{writeString}} is called per word.
> I am not sure if this would be counted as a bug because the final extracted
> text is not affected.
> The problematic PDF is attached.
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