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On Jan 19, 2008 4:45 AM, Werner LEMBERG <[EMAIL PROTECTED]> wrote:
>
> > 1. for Unicode support create dgjhwff to do a mapping from the SJIS
> > dgjhw font. So I am guessing that means a dgjhwff.tfm and a
> > dgjhwff.vf, created from an edited version of dgjhw.pl where a
> > MAPFONT and for each character a MAP entry has been added. I
> > confirmed that to be the case (see below).
>
> Yes.
>
> > 2. modify the udmjff.vf and udmjff.tfm to incorporate the half-width
> > katakana directly, by converting the vf to vpl, editing it, and
> > creating new vf and tfm files.
>
> Yes.
>
> > I converted udmjff.vf to pl and checked that the mapping is taking
> > place as I expected. I also found the encoding as DNPUNICODE, so I
> > wonder if that means I can use sfd2uni.pl with Unicode.sfd as the
> > sfd-file and DNPUNICODE as the coding scheme?
>
> I don't think so. Maybe it works, but I have no time to test it.
OK, I have done the work manually. First I used clonevf. pl to create
a vf for dgjhw.tfm. I convert the vf to a vpl. Then I changed the
mapping as follows: the original font should be unicode, and the
mapping should go to SJIS, so I left the MAP part and changed the
primary character codepoint. Luckily, the difference is exactly 100
octal, so it was necessary to decrease only the leading digit by one.
Now I convert the existing udgjff.{vf,tfm} to vpl and add the above
data to it (since it was not there efore), and make sure to add a new
FONTMAP entry referencing dgjhw. All the new chracters must have their
MAP index set to the index of the new FONTMAP (in this case 2).
Then I use vptovf to create a udgjff.{vf,tfm} again which now has the
modified mapping and copy to wadalab directories for Unicode vf and
tfm files.
I am happy to report that this works with my UTF test file, with no
change of font families :-)
Now I will correct the sfd file (character alignments) and redo the
above process using the modified tfm file. I hope I have not forgotten
something.
I have one question: in the vf files there is a field called
FONTCHECKSUM for each referenced font. I do not know where I should
get that from for the dgjhw font which I reference. The entries look
now something like the below:
(MAPFONT D 0
(FONTNAME dgjsy)
(FONTCHECKSUM O 37160404056)
(FONTAT R 1.0)
(FONTDSIZE R 10.0)
)
(MAPFONT D 1
(FONTNAME dgjroma)
(FONTCHECKSUM O 12474217137)
(FONTAT R 1.0)
(FONTDSIZE R 10.0)
)
(MAPFONT D 2
(FONTNAME dgjhw)
(FONTAT R 1.0)
(FONTDSIZE R 10.0)
)
Does anyone know how this fontchecksum is generated and what is being
checksummed? I do not find any reference to it in the makuniwada.pl
script in the write_vpl routine nor do I find it if I open a pfb file
in fontforge.
Regards, Gernot
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