#include "a.h" /* * Translate troff to Unicode by looking in troff's utfmap. * This way we don't have yet another hard-coded table. */typedef struct Trtab Trtab;struct Trtab{	char t[UTFmax];	Rune r;}; static Trtab trtab[200];int ntrtab; static Trtab trinit[] ={	"pl",		Upl,	"eq",	Ueq,	"em",	0x2014,	"en",	0x2013,	"mi",	Umi,	"fm",	0x2032,}; Runetroff2rune(Rune *rs){	char *file, *f[10], *p, s[3];	int i, nf;	Biobuf *b;		if(rs[0] >= Runeself || rs[1] >= Runeself)		return Runeerror;	s[0] = rs[0];	s[1] = rs[1];	s[2] = 0;	if(ntrtab == 0){		for(i=0; i<nelem(trinit) && ntrtab < nelem(trtab); i++){			trtab[ntrtab] = trinit[i];			ntrtab++;		}		file = "/sys/lib/troff/font/devutf/utfmap";		if((b = Bopen(file, OREAD)) == nil)			sysfatal("open %s: %r", file);		while((p = Brdline(b, '\n')) != nil){			p[Blinelen(b)-1] = 0;			nf = getfields(p, f, nelem(f), 0, "\t");			for(i=0; i+2<=nf && ntrtab<nelem(trtab); i+=2){				chartorune(&trtab[ntrtab].r, f[i]);				memmove(trtab[ntrtab].t, f[i+1], 2);				ntrtab++;			}		}		Bterm(b);				if(ntrtab >= nelem(trtab))			fprint(2, "%s: trtab too small\n", argv0);	}		for(i=0; i<ntrtab; i++)		if(strcmp(s, trtab[i].t) == 0)			return trtab[i].r;	return Runeerror;}