Jose Novacho created PDFBOX-4742:
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Summary: Incorrect handling of float Infinity and NaN
Key: PDFBOX-4742
URL: https://issues.apache.org/jira/browse/PDFBOX-4742
Project: PDFBox
Issue Type: Bug
Components: PDModel, Writing
Affects Versions: 2.0.18, 2.0.8
Reporter: Jose Novacho
Attachments: Hello World.pdf
When creating document, there is an issue if the operand for a command is
floating number positive or negative Infinity, or NaN.
The problem is in method{{{color:#172b4d}
org.apache.pdfbox.pdmodel.PDPageContentStream#write. {color}}}In case the
method {{org.apache.pdfbox.pdmodel.PDPageContentStream#writeOperand(float)}}
receives as operand a floating number with value Float.POSITIVE_INFINITY or
Float.NEGATIVE_INFINITY the result of formating is symbol for infinity: ∞
(unicode 0x221E). The NaN produce unicode symbol 0xFFFD (replacement
character). This is then later converted to bytes using the US_ASCII encoding
which produces symbol *?* (0x3F) this symbol is then put into the content
stream and the resulting PDF is invalid.
Mimimal working example to reproduce this issue.
{code:java}
// code placeholder
public class InfiniteError {
public static void main(String[] args) throws IOException {
PDDocument document = new PDDocument();
PDPage page = new PDPage();
document.addPage(page); PDFont font =
PDType1Font.HELVETICA_BOLD; PDPageContentStream contentStream = new
PDPageContentStream(document, page, PDPageContentStream.AppendMode.OVERWRITE,
false); contentStream.beginText();
contentStream.setFont(font, 12);
contentStream.newLineAtOffset(100, Float.POSITIVE_INFINITY);
contentStream.showText("Hello World");
contentStream.endText(); contentStream.close();
document.save("Hello World.pdf");
document.close(); }
}
{code}
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