1 a31db67d 2004-04-21 devnull #ifdef	PLAN9
  2 a31db67d 2004-04-21 devnull #include	<u.h>
  3 a31db67d 2004-04-21 devnull #include	<libc.h>
  4 a31db67d 2004-04-21 devnull #include	<bio.h>
  5 a31db67d 2004-04-21 devnull #else
  6 a31db67d 2004-04-21 devnull #include	<stdio.h>
  7 a31db67d 2004-04-21 devnull #include	<unistd.h>
  8 a31db67d 2004-04-21 devnull #include	"plan9.h"
  9 a31db67d 2004-04-21 devnull #endif
 10 a31db67d 2004-04-21 devnull #include	"hdr.h"
 11 a31db67d 2004-04-21 devnull #include	"conv.h"
 12 a31db67d 2004-04-21 devnull #include	"ksc.h"
 13 a31db67d 2004-04-21 devnull 
 14 a31db67d 2004-04-21 devnull /*
 15 a31db67d 2004-04-21 devnull 	contributed by kuro@vodka.Eng.Sun.COM (Teruhiko Kurosaka)
 16 a31db67d 2004-04-21 devnull */
 17 a31db67d 2004-04-21 devnull 
 18 a31db67d 2004-04-21 devnull /*
 19 a31db67d 2004-04-21 devnull 	a state machine for interpreting shift-ksc.
 20 a31db67d 2004-04-21 devnull */
 21 a31db67d 2004-04-21 devnull 
 22 a31db67d 2004-04-21 devnull #define	SS2	0x8e
 23 a31db67d 2004-04-21 devnull #define	SS3	0x8f
 24 a31db67d 2004-04-21 devnull /*
 25 a31db67d 2004-04-21 devnull  * Convert EUC in Koran locale to Unicode.
 26 a31db67d 2004-04-21 devnull  * Only codeset 0 and 1 are used.
 27 a31db67d 2004-04-21 devnull  */
 28 a31db67d 2004-04-21 devnull void
 29 a31db67d 2004-04-21 devnull ukscproc(int c, Rune **r, long input_loc)
 30 a31db67d 2004-04-21 devnull {
 31 a31db67d 2004-04-21 devnull 	static enum { init, cs1last /*, cs2, cs3first, cs3last*/} state = init;
 32 a31db67d 2004-04-21 devnull 	static int korean646 = 1; /* fixed to 1 for now. */
 33 a31db67d 2004-04-21 devnull 	static int lastc;
 34 a31db67d 2004-04-21 devnull 	int n;
 35 a31db67d 2004-04-21 devnull 	long l;
 36 a31db67d 2004-04-21 devnull 
 37 a31db67d 2004-04-21 devnull 	switch(state)
 38 a31db67d 2004-04-21 devnull 	{
 39 a31db67d 2004-04-21 devnull 	case init:
 40 a31db67d 2004-04-21 devnull 		if (c < 0){
 41 a31db67d 2004-04-21 devnull 			return;
 42 a31db67d 2004-04-21 devnull 		}else if (c < 128){
 43 a31db67d 2004-04-21 devnull 			if(korean646 && (c=='\\')){
 44 a31db67d 2004-04-21 devnull 				emit(0x20A9);
 45 a31db67d 2004-04-21 devnull 			} else {
 46 a31db67d 2004-04-21 devnull 				emit(c);
 47 a31db67d 2004-04-21 devnull 			}
 48 a31db67d 2004-04-21 devnull /*		}else if (c==SS2){
 49 a31db67d 2004-04-21 devnull 			state = cs2;
 50 a31db67d 2004-04-21 devnull 		}else if (c==SS3){
 51 a31db67d 2004-04-21 devnull 			state = cs3first;
 52 a31db67d 2004-04-21 devnull  */		}else{
 53 a31db67d 2004-04-21 devnull 			lastc = c;
 54 a31db67d 2004-04-21 devnull 			state = cs1last;
 55 a31db67d 2004-04-21 devnull 		}
 56 a31db67d 2004-04-21 devnull 		return;
 57 a31db67d 2004-04-21 devnull 
 58 a31db67d 2004-04-21 devnull 	case cs1last: /* 2nd byte of codeset 1 (KSC 5601) */
 59 a31db67d 2004-04-21 devnull 		if(c < 0){
 60 a31db67d 2004-04-21 devnull 			if(squawk)
 61 a31db67d 2004-04-21 devnull 				EPR "%s: unexpected EOF in %s\n", argv0, file);
 62 a31db67d 2004-04-21 devnull 			c = 0x21 | (lastc&0x80);
 63 a31db67d 2004-04-21 devnull 		}
 64 a31db67d 2004-04-21 devnull 		n = ((lastc&0x7f)-33)*94 + (c&0x7f)-33;
 65 a31db67d 2004-04-21 devnull  		if((n >= ksc5601max) || ((l = tabksc5601[n]) < 0)){
 66 a31db67d 2004-04-21 devnull 			nerrors++;
 67 a31db67d 2004-04-21 devnull 			if(squawk)
 68 a31db67d 2004-04-21 devnull 				EPR "%s: unknown ksc5601 %d (from 0x%x,0x%x) near byte %ld in %s\n", argv0, n, lastc, c, input_loc, file);
 69 a31db67d 2004-04-21 devnull 			if(!clean)
 70 a31db67d 2004-04-21 devnull 				emit(BADMAP);
 71 a31db67d 2004-04-21 devnull 		} else {
 72 a31db67d 2004-04-21 devnull 			emit(l);
 73 a31db67d 2004-04-21 devnull 		}
 74 a31db67d 2004-04-21 devnull 		state = init;
 75 a31db67d 2004-04-21 devnull 		return;
 76 a31db67d 2004-04-21 devnull 	default:
 77 a31db67d 2004-04-21 devnull 		if(squawk)
 78 a31db67d 2004-04-21 devnull 			EPR "%s: ukscproc: unknown state %d\n",
 79 a31db67d 2004-04-21 devnull 				argv0, init);
 80 a31db67d 2004-04-21 devnull 	}
 81 a31db67d 2004-04-21 devnull }
 82 a31db67d 2004-04-21 devnull 
 83 a31db67d 2004-04-21 devnull void
 84 a31db67d 2004-04-21 devnull uksc_in(int fd, long *notused, struct convert *out)
 85 a31db67d 2004-04-21 devnull {
 86 a31db67d 2004-04-21 devnull 	Rune ob[N];
 87 a31db67d 2004-04-21 devnull 	Rune *r, *re;
 88 a31db67d 2004-04-21 devnull 	uchar ibuf[N];
 89 a31db67d 2004-04-21 devnull 	int n, i;
 90 a31db67d 2004-04-21 devnull 	long nin;
 91 a31db67d 2004-04-21 devnull 
 92 a31db67d 2004-04-21 devnull 	USED(notused);
 93 a31db67d 2004-04-21 devnull 	r = ob;
 94 a31db67d 2004-04-21 devnull 	re = ob+N-3;
 95 a31db67d 2004-04-21 devnull 	nin = 0;
 96 a31db67d 2004-04-21 devnull 	while((n = read(fd, ibuf, sizeof ibuf)) > 0){
 97 a31db67d 2004-04-21 devnull 		for(i = 0; i < n; i++){
 98 a31db67d 2004-04-21 devnull 			ukscproc(ibuf[i], &r, nin++);
 99 a31db67d 2004-04-21 devnull 			if(r >= re){
100 a31db67d 2004-04-21 devnull 				OUT(out, ob, r-ob);
101 a31db67d 2004-04-21 devnull 				r = ob;
102 a31db67d 2004-04-21 devnull 			}
103 a31db67d 2004-04-21 devnull 		}
104 a31db67d 2004-04-21 devnull 		if(r > ob){
105 a31db67d 2004-04-21 devnull 			OUT(out, ob, r-ob);
106 a31db67d 2004-04-21 devnull 			r = ob;
107 a31db67d 2004-04-21 devnull 		}
108 a31db67d 2004-04-21 devnull 	}
109 a31db67d 2004-04-21 devnull 	ukscproc(-1, &r, nin);
110 a31db67d 2004-04-21 devnull 	if(r > ob)
111 a31db67d 2004-04-21 devnull 		OUT(out, ob, r-ob);
112 536f9b83 2006-05-21 devnull 	OUT(out, ob, 0);
113 a31db67d 2004-04-21 devnull }
114 a31db67d 2004-04-21 devnull 
115 a31db67d 2004-04-21 devnull void
116 a31db67d 2004-04-21 devnull uksc_out(Rune *base, int n, long *notused)
117 a31db67d 2004-04-21 devnull {
118 a31db67d 2004-04-21 devnull 	char *p;
119 a31db67d 2004-04-21 devnull 	int i;
120 a31db67d 2004-04-21 devnull 	Rune r;
121 a31db67d 2004-04-21 devnull 	long l;
122 a31db67d 2004-04-21 devnull 	static int first = 1;
123 a31db67d 2004-04-21 devnull 
124 a31db67d 2004-04-21 devnull 	USED(notused);
125 a31db67d 2004-04-21 devnull 	if(first){
126 a31db67d 2004-04-21 devnull 		first = 0;
127 a31db67d 2004-04-21 devnull 		for(i = 0; i < NRUNE; i++)
128 a31db67d 2004-04-21 devnull 			tab[i] = -1;
129 a31db67d 2004-04-21 devnull 		for(i = 0; i < ksc5601max; i++)
130 a31db67d 2004-04-21 devnull 			if((l = tabksc5601[i]) != -1){
131 a31db67d 2004-04-21 devnull 				if(l < 0)
132 a31db67d 2004-04-21 devnull 					tab[-l] = i;
133 a31db67d 2004-04-21 devnull 				else
134 a31db67d 2004-04-21 devnull 					tab[l] = i;
135 a31db67d 2004-04-21 devnull 			}
136 a31db67d 2004-04-21 devnull 	}
137 a31db67d 2004-04-21 devnull 	nrunes += n;
138 a31db67d 2004-04-21 devnull 	p = obuf;
139 a31db67d 2004-04-21 devnull 	for(i = 0; i < n; i++){
140 a31db67d 2004-04-21 devnull 		r = base[i];
141 a31db67d 2004-04-21 devnull 		if(r < 128)
142 a31db67d 2004-04-21 devnull 			*p++ = r;
143 a31db67d 2004-04-21 devnull 		else {
144 a31db67d 2004-04-21 devnull 			if(tab[r] != -1){
145 a31db67d 2004-04-21 devnull 				*p++ = 0x80 | (tab[r]/94 + 0x21);
146 a31db67d 2004-04-21 devnull 				*p++ = 0x80 | (tab[r]%94 + 0x21);
147 a31db67d 2004-04-21 devnull 				continue;
148 a31db67d 2004-04-21 devnull 			}
149 a31db67d 2004-04-21 devnull 			if(squawk)
150 a31db67d 2004-04-21 devnull 				EPR "%s: rune 0x%x not in output cs\n", argv0, r);
151 a31db67d 2004-04-21 devnull 			nerrors++;
152 a31db67d 2004-04-21 devnull 			if(clean)
153 a31db67d 2004-04-21 devnull 				continue;
154 a31db67d 2004-04-21 devnull 			*p++ = BYTEBADMAP;
155 a31db67d 2004-04-21 devnull 		}
156 a31db67d 2004-04-21 devnull 	}
157 a31db67d 2004-04-21 devnull 	noutput += p-obuf;
158 a31db67d 2004-04-21 devnull 	if(p > obuf)
159 a31db67d 2004-04-21 devnull 		write(1, obuf, p-obuf);
160 a31db67d 2004-04-21 devnull }