Dear iText developers,
I have noticed that for certain (perhaps not well-formed) PDFs following
exceptions are thrown:
* NumberFormatException in PdfNumber
java.lang.RuntimeException: - is not a valid number -
java.lang.NumberFormatException: For input string: "-"
at com.itextpdf.text.pdf.PdfNumber.<init>(PdfNumber.java:83)
at
com.itextpdf.text.pdf.PdfContentParser.readPRObject(PdfContentParser.java:180)
at
com.itextpdf.text.pdf.PdfContentParser.parse(PdfContentParser.java:89)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor.processContent(PdfContentStreamProcessor.java:359)
at
com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:41)
It looks like there should be an additional check in PdfNumber that
input string is actually a number and perhaps ignore it in case it
is not.
* StringIndexOutOfBoundsException in SimpleTextExtractionStrategy
java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:686)
at
com.itextpdf.text.pdf.parser.SimpleTextExtractionStrategy.renderText(SimpleTextExtractionStrategy.java:126)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor.displayPdfString(PdfContentStreamProcessor.java:304)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor.access$2500(PdfContentStreamProcessor.java:75)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor$ShowTextArray.invoke(PdfContentStreamProcessor.java:428)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor.invokeOperator(PdfContentStreamProcessor.java:247)
at
com.itextpdf.text.pdf.parser.PdfContentStreamProcessor.processContent(PdfContentStreamProcessor.java:366)
at
com.itextpdf.text.pdf.parser.PdfReaderContentParser.processContent(PdfReaderContentParser.java:41)
Additional check for string length is required or perhaps
StringUtils.substring(renderInfo.getText(), 0, 1) will be safe enough.
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