[jira] Issue Comment Edited: (PDFBOX-418) PDFStreamParser reads incorrect number (patch provided)

["Andreas Lehmkühler (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PDFBOX-418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670343#action_12670343 ] 

lehmi edited comment on PDFBOX-418 at 2/4/09 7:17 AM:
-------------------------------------------------------------------

Seems to be the same issue than PDFBOX-228

      was (Author: lehmi):
    Seems to be the same issue
  
> PDFStreamParser reads incorrect number (patch provided)
> -------------------------------------------------------
>
>                 Key: PDFBOX-418
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-418
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Parsing
>    Affects Versions: 0.8.0-incubator
>            Reporter: Timo Boehme
>             Fix For: 0.8.0-incubator
>
>   Original Estimate: 0.08h
>  Remaining Estimate: 0.08h
>
> With one of our documents PDFBox (compiled Incubator version 2009-02-04) throws an floating point number exception.
> The reason: PDFStreamParser in method parseNextToken() is not strict enough reading a number. In our case the string read
> was '97.-96' which clearly could not be parsed as a number. Thus when parsing a number (starting at line 238) '+' and '-' should
> only be allowed at fist position (maybe one should make sure that '.' can only be read once).
> The following patch completely replaces the code after "case '.':" at line 236. The first condition in replaced code is not
> necessary since the test is already be done by the 'case' statements - so we don't have to throw an exception either. 
>                   StringBuffer buf = new StringBuffer();
>                   
>                   buf.append( c );
>                   pdfSource.read();
>                   
>                   boolean dotNotRead = (c != '.');
>                   
>                   while( Character.isDigit(( c = (char)pdfSource.peek()) ) || (dotNotRead && (c == '.')) )
>                   {
>                       buf.append( c );
>                       pdfSource.read();
>                       
>                       if (dotNotRead && (c == '.'))
>                       	dotNotRead = false;
>                   }
>                   retval = COSNumber.get( buf.toString() );
>                 break;

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