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Topic: Re: /Charset definition
Conf: (P-PDF) Developers, Msg: 56170
From: LeonardR
Date: 5/29/2002 05:17 PM

At 10:07 AM -0500 3/26/01, p-pdf-developer Listmanager wrote:
>I've probably got the wrong end of that stick. What I am trying to
>do is extract content as text from pdf.

Ah what fun ;).


>I have read the Font info, encoding tables, differences.

Good!


>I read the stream of values in a TJ command, ignoring the leading.

So you're not trying to reconstitute visual order, only logical?


>This is not working all the time so I assume I am missing part of
>the jigsaw - any suggestions??
>
Are you handling different types of fonts? Different types
maintain encoding information differently, including such issues as
TT cmaps, Type 0 CID information, Type3 charprocs, etc.

Encoding information can be in a number of places, the
original Font dict, the embedded font, and in the case of a FontFile3
in a Font dict, then you need to also look at it's Subtype for
additional information. And then don't forget to merge the encoding
table with the diffs array.


Leonard
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Leonard Rosenthol
Sr. Software Engineer (215) 922-3509 (voice)
Digital Applications (215) 440-0504 (fax)

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