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Re: Using/requiring Cairo
From: |
karl |
Subject: |
Re: Using/requiring Cairo |
Date: |
Sat, 24 Jun 2017 21:55:36 +0200 (CEST) |
David Kastrup:
> address@hidden writes:
> > David Kastrup:
...
> "taking care of PostScript" is not related to converting LilyPond's
> graphics internals to Cairo since LilyPond's graphics internals are not
> written in PostScript.
Ok, forget it then, you are not listening.
...
> When processing in general will get moved to Cairo,
...
You make it sound like it is already decided.
...
> > PostScript is a programming language suited for printing and other
> > things. Why youldn't I like to have that readable and understandable
> > like any other code ?
>
> Because it is employed as an intermediate format not intended for human
> consumption and manipulation? It's similar to the role of LilyPond in a
> Denemo workflow. It's nice for debugging when it's somewhat readable,
> but the files created in it are ephemeral.
...
Fine, I also want them to be easy to debug.
PS is not ephemeral for me.
...
> You are not supposed to get started at writing PDF. Instead the PDF
> gets written by programs. You are fine with letting your PDF be written
> by Ghostscript rather than LilyPond and not looking at it. What is the
> difference with PostScript in your workflow that makes it different?
You don't listen, I use the PS as is, not doing any conversion to pdf
unless someone else wants them.
And my interest was in reading pdf's, so I can write programs to extract
the info I want from pdf's. I took up the subject to show that the goal
of computer-readability and processability is not reached.
> > I have tried to find some free lib to use to read pdf's, if you know
> > of one please tell me, preferable for perl.
>
> libpoppler?
Yes, but it is barely documented, makes it hard to use.
> > Currently I'm using "pdftohtml --xml", but there is a few things
> > missing with that solution.
> >
> > I know about poppler, citing:
> > https://freedesktop.org/wiki/Software/poppler/
> > //
> > Documentation
> >
> > There is currently very little documentation.
> > //
> >
> > Soo, the computer-readability is a nice goal, but not so much
> > attained.
>
> Well, there isn't a free lib for reading PostScript, is there?
I do have an editor.
> I mean, how much is ps2pdf documented?
...
Ok, you don't know then, so much for computer-readability and
processability.
Regards,
/Karl Hammar
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Re: Using/requiring Cairo, karl, 2017/06/24
- Re: Using/requiring Cairo, David Kastrup, 2017/06/24
- Re: Using/requiring Cairo, karl, 2017/06/24
- Re: Using/requiring Cairo, David Kastrup, 2017/06/24
- Re: Using/requiring Cairo,
karl <=
- Re: Using/requiring Cairo, Werner LEMBERG, 2017/06/24
- Re: Using/requiring Cairo, karl, 2017/06/24
- Re: Using/requiring Cairo, David Kastrup, 2017/06/25
- Re: Using/requiring Cairo, karl, 2017/06/25
- Re: Using/requiring Cairo, David Kastrup, 2017/06/25