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Posted to dev@pdfbox.apache.org by "Andreas Lehmkühler (Jira)" <ji...@apache.org> on 2022/05/06 15:42:00 UTC

[jira] [Comment Edited] (PDFBOX-5430) PDFStreamEngine.showTextStrings with font switch

    [ https://issues.apache.org/jira/browse/PDFBOX-5430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17532930#comment-17532930 ] 

Andreas Lehmkühler edited comment on PDFBOX-5430 at 5/6/22 3:41 PM:
--------------------------------------------------------------------

I guess you are referring to things like this
{code}
 [ /F3 8 (Monatliche Kosten  ) /F1 8 0 -11 ] TJ
{code}
Maybe I'm missing something, but the TJ operator doesn't define a font switch. It is simply malformed.




was (Author: lehmi):
I guess you rae referring to things like this
{code}
 [ /F3 8 (Monatliche Kosten  ) /F1 8 0 -11 ] TJ
{code}
Maybe I'm missing something, but the TJ operator doesn't define a font switch. It is simply malformed.



> PDFStreamEngine.showTextStrings with font switch
> ------------------------------------------------
>
>                 Key: PDFBOX-5430
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-5430
>             Project: PDFBox
>          Issue Type: Bug
>            Reporter: Oliver Schmidtmer
>            Priority: Major
>         Attachments: keine Vorschau ELO-1228188_20220228_11462_HD_online.pdf
>
>
> The attached PDF fails to render with an PDFStreamEngine.showTextStrings with the following exception:
> "java.io.IOException: Unknown type COSName in array for TJ operation:COSName\{F3}"
> This seems to be a font switch.
> {code:java}
> diff --git "a/pdfbox/src/main/java/org/apache/pdfbox/contentstream/PDFStreamEngine.java" "b/pdfbox/src/main/java/org/apache/pdfbox/contentstream/PDFStreamEngine.java"
> index e4f2259a5..12edadd2b 100644
> --- "a/pdfbox/src/main/java/org/apache/pdfbox/contentstream/PDFStreamEngine.java"
> +++ "b/pdfbox/src/main/java/org/apache/pdfbox/contentstream/PDFStreamEngine.java"
> @@ -680,6 +680,18 @@ public abstract class PDFStreamEngine
>                  byte[] string = ((COSString)obj).getBytes();
>                  showText(string);
>              }
> +            else if (obj instanceof COSName)
> +            {
> +                if(((COSName) obj).getName().startsWith("F"))
> +                {
> +                    textState.setFont(resources.getFont((COSName) obj));
> +                }
> +                else
> +                {
> +                    throw new IOException("Unknown type " + obj.getClass().getSimpleName()
> +                            + " in array for TJ operation:" + obj);
> +                }
> +            }
>              else if (obj instanceof COSArray)
>              {
>                  LOG.error("Nested arrays are not allowed in an array for TJ operation:" + obj);
> {code}



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