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GhostScript and Wada Fonts

by Andrew S. Howell
andy@tibco.com
17 Oct 1996

I just recently got Ghostscript to work with wadalab fonts. It was one hell of a battle and I now know quite a bit more about composite postscript fonts, which are used for Kanji. I could not get the EUC or sjis encodings to work at all, initialy. I won't bore you with the details, but I finaly noticed that there was an extra PS file in the tools directy called:

	Wadalab-mincho-0-12.ps

from

ftp://ftp.ipl.t.u-tokyo.ac.jp/Font/tools

Anyway, you take that file, put in the font path ( gs -version will tell you the font path ) and make entries in the Fontmap like:

/Wadalab-mincho-0-8		(Wadalab-mincho-0-12.ps) ;
/Wadalab-mincho-0-8-RKSJ	(Wadalab-mincho-0-12.ps) ;
/Wadalab-mincho-0-8-EUC		(Wadalab-mincho-0-12.ps) ;
/Wadalab-mincho-0-8-V		(Wadalab-mincho-0-12.ps) ;
The individual files for /Wadalab-mincho-0-8 have entries like
/Wadalab-mincho-0-8.r21		(jis-21.pfa)  ;
/Wadalab-mincho-0-8.r22		(jis-22.pfa)  ;
/Wadalab-mincho-0-8.r23		(jis-23.pfa)  ;
/Wadalab-mincho-0-8.r26		(jis-26.pfa)  ;
/Wadalab-mincho-0-8.r27		(jis-27.pfa)  ;
/Wadalab-mincho-0-8.r28		(jis-28.pfa)  ;

/Wadalab-mincho-0-8.r24		(min-0-8-24.pfa)  ;
/Wadalab-mincho-0-8.r25		(min-0-8-25.pfa)  ;
/Wadalab-mincho-0-8.r30		(min-0-8-30.pfa)  ;
When you use a font by doing something like:
/Wadalab-mincho-0-8 findfont 40 scalefont setfont
100 100 moveto <3021> show showpage
Ghostscript looks up the font Wadalab-mincho-0-8 in the Fontmap file and finds that that it needs to run Wadalab-mincho-0-8.ps when it needs a character from that font. Wadalab-mincho-0-8.ps. When GS executes the second line above, Wadalab-mincho-0-8.ps figures out the this is a JIS code and translates the character code such that it knows which of Wadalab-mincho-0-8.rxx files the character lives in. It then loads that font by consulting the Fontmap again by looking for ( in this example ) /Wadalab-mincho-0-8.r30. It finds (min-0-8-30.pfa) and loads the all the characters in that file. It this sounds like it is a sloow process, it is, but it does work. This same file ( Wadalab-mincho-0-12.ps ) works with jis-x208, but not with 212, I think.

To use the Wadalab-mincho-0-12.ps for other fonts, such as I did in the example, you need to change an number of lines that look like:

/Wadalab-mincho-0-12 CompNF
/Wadalab-mincho-0-12 VCompNF
/Wadalab-mincho-0-12 CompSJNF
/Wadalab-mincho-0-12 CompEUCNF
To be the Wadalab font you want.

You can make aliases for other font names and encodings like:

% Aliases for wadalab fonts

/Ryumin-Light-EUC-H		/Wadalab-mincho-0-8-EUC ;
/Ryumin-Light-Ext-RKSJ-H	/Wadalab-mincho-0-8-RKSJ ;
/GothicBBB-Medium-EUC-H		/Wadalab-gothic-0-13-EUC ;
/GothicBBB-Medium-RKSJ-H	/Wadalab-gothic-0-13-RKSJ ;
The other option is to concatinate all the min-0-8-*.pfs files into one and load them all at once. This works, though I could not get one of the fonts to work, GS barfed on it.

I could not get this to work for sjis. From my notes:

gs_kanji.ps and gs_ksb_e.ps are used by wftopfa.ps to produce a a single font file that is then accessed like:

/Wadalab-SaiMincho (wmin0.ps) ;
Looks like gs_kanji should produce encodings for JIS and ??
jis  3441 kan in kanji - displays ok
sjis 8abf              - displays as /
euc  b4c1	       - displays OK !
Hope this adds a few more pieces to the puzzle.

One bit of hope for future. Adobe has come up with a new method, called CID, if memory serves, for handling various encodings that is supposed to be much faster, and as a demonstration, to used the Wadalab fonts. Ghostscript does not yet support this, though someone has. See gs_cidfn.ps in the gs distribution if your interested.


next up previous contents index
Next: Documents in Japanese Up: Japanese Printing and Text Previous: The Steve Turnbull Guide
Craig Toshio Oda
1998-05-07