Re: fix for 687135, pdf file processing error

Please explain why the empty string is an acceptable default.

Igor.

----- Original Message ----- 
From: "Alex Cherepanov" <[email protected]>
To: <[email protected]>
Sent: Tuesday, November 11, 2003 9:57 PM
Subject: [gs-code-review] fix for 687135, pdf file processing error


> Default to empty string when there's no /ID in the trailer.
>
>


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> Index: gs/lib/pdf_sec.ps
> ===================================================================
> RCS file: /cvs/ghostscript/gs/lib/pdf_sec.ps,v
> retrieving revision 1.11
> diff -b -u -r1.11 pdf_sec.ps
> --- gs/lib/pdf_sec.ps 12 Apr 2003 18:08:18 -0000 1.11
> +++ gs/lib/pdf_sec.ps 11 Nov 2003 14:10:07 -0000
> @@ -100,7 +100,7 @@
>    % <padded-key> <O> <P>
>
>    % Step 5.
> -  Trailer /ID oget 0 oget
> +  Trailer /ID knownoget { 0 oget } { () } ifelse
>    3 { concatstrings } repeat md5
>
>    % Step 6.
> @@ -126,7 +126,7 @@
>    pdf_padding_string
>
>    % Step 3.
> -  Trailer /ID oget 0 oget
> +  Trailer /ID knownoget { 0 oget } { () } ifelse
>    concatstrings md5
>
>    % Step 4.
>


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