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https://issues.apache.org/jira/browse/PDFBOX-5532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17623319#comment-17623319
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Michael Klink commented on PDFBOX-5532:
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{quote}I am reading a pdf document but in the COSString field non-ascii
characters are being retrieved. What can be the motive?{quote}
Please be aware that the encoding of strings in content streams can be
completely arbitrary and is defined by the respectively current font.
Your {{replaceText}} method makes very specific assumptions which only are true
in simple PDFs.
> COSString field non-ascii characters
> ------------------------------------
>
> Key: PDFBOX-5532
> URL: https://issues.apache.org/jira/browse/PDFBOX-5532
> Project: PDFBox
> Issue Type: Bug
> Reporter: David
> Priority: Major
>
>
> Hello,
> I am reading a pdf document but in the COSString field non-ascii characters
> are being retrieved. What can be the motive? I am using version
> pdfbox-2.0.24.jar
> This would be an example of the pdf document parsed:
> COSInt\{50}
> COSInt\{0}
> PDFOperator\{Td}
> COSString\{åÅÕãÁâ@}
> PDFOperator\{Tj}
> COSFloat\{770.18}
> COSInt\{0}
> PDFOperator\{Td}
> COSString\{×–Ž–©@}
> PDFOperator\{Tj}
> COSFloat\{520.21}
> COSInt\{0}
> Function java:
> public static PDDocument replaceText(PDDocument document, String
> searchString, String replacement) throws IOException {
>
> PDPageTree pages = document.getDocumentCatalog().getPages();
> for (PDPage page : pages) {
>
> PDFStreamParser parser = new PDFStreamParser(page);
> parser.parse();
> List tokens = parser.getTokens();
> for (int j = 0; j < tokens.size(); j++) {
> Object next = tokens.get(j);
>
> if (next instanceof Operator) {
> Operator op = (Operator) next;
>
> if (op.getName().equals("Tj")) {
> COSString previous = (COSString)
> tokens.get(j - 1);
> String string = previous.getString();
> System.out.println("previous:=" + string);
>
>
> if (string.equals(searchString)){
> COSString sx = new
> COSString(replacement);
> previous.setValue(sx.getBytes());
>
> }
> }
> }
> }
> // now that the tokens are updated we will replace the
> page content stream.
> PDStream updatedStream = new PDStream(document);
> OutputStream out = updatedStream.createOutputStream();
> ContentStreamWriter tokenWriter = new
> ContentStreamWriter(out);
> tokenWriter.writeTokens(tokens);
> page.setContents(updatedStream);
> out.close();
>
>
> }
> return document;
> }
>
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