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Re: [ft] Type1 header format checking

From: Ammar ul hassan
Subject: Re: [ft] Type1 header format checking
Date: Thu, 1 Jun 2017 14:26:10 +0900

Thanks for the quick response.

And what about the Freetype functions
like ft_memcmp, read_pfb_tag, FT_STREAM_SEEK, etc. is there any
documentation for these, or they need code back tracking?

On Thu, Jun 1, 2017 at 2:21 PM, Werner LEMBERG <address@hidden> wrote:

> > What i understand till now is that every type 1 postscript font file
> > starts with some text like "%!PS-AdobeFont" which has length 14
> > characters.
> This is specified in the `black book'; the ID strings can be either
> `%!FontType1-1.0' or `%!PS-AdobeFont-1.0' (the latter identifies a
> PostScript resource).
> font/pdfs/T1_SPEC.pdf
> > Is there any documentation about these functions as i am unable to
> > track them and know what they are actually doing? 2) if i am wrong
> > than how is this, checking header format part working in Type1
> > driver.
> The PFB format is documented in Adobe Technote #5040.
> font/pdfs/5040.Download_Fonts.pdf
> Note that #5040 also defines `PFA'; however, this is not used today.
> Instead, a PFA is simply a PostScript resource where the eexec part is
> ASCII encoded instead of binary.
>     Werner

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