commit 8d7133308db580d2356d5d1dd30f0b9a1f0a7417
from: rsc <devnull@localhost>
date: Sun May 21 20:42:33 2006 UTC

forgot

commit - 536f9b83c0bed9986800d806c74ae4d225628fe3
commit + 8d7133308db580d2356d5d1dd30f0b9a1f0a7417
blob - /dev/null
blob + 1046b779650658b399ba494467885b1a04dcd297 (mode 644)
--- /dev/null
+++ src/cmd/tcs/tune.c
@@ -0,0 +1,309 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include "hdr.h"
+#include "conv.h"
+
+typedef struct Tmap Tmap;
+struct Tmap
+{
+	Rune u;
+	Rune t;
+};
+
+static Tmap t1[] =
+{
+	{0x0b85/*அ*/, 0xe201/**/},
+	{0x0b86/*ஆ*/, 0xe202/**/},
+	{0x0b87/*இ*/, 0xe203/**/},
+	{0x0b88/*ஈ*/, 0xe204/**/},
+	{0x0b89/*உ*/, 0xe205/**/},
+	{0x0b8a/*ஊ*/, 0xe206/**/},
+	{0x0b8e/*எ*/, 0xe207/**/},
+	{0x0b8f/*ஏ*/, 0xe208/**/},
+	{0x0b90/*ஐ*/, 0xe209/**/},
+	{0x0b92/*ஒ*/, 0xe20a/**/},
+	{0x0b93/*ஓ*/, 0xe20b/**/},
+	{0x0b94/*ஔ*/, 0xe20c/**/},
+	{0x0b83/*ஃ*/, 0xe20d/**/}
+};
+
+static Rune t2[] =
+{
+	0x0bcd/*்*/, 
+	0x0bcd/*்*/,	// filler
+	0x0bbe/*ா*/,
+	0x0bbf/*ி*/,
+	0x0bc0/*ீ*/,
+	0x0bc1/*ு*/,
+	0x0bc2/*ூ*/,
+	0x0bc6/*ெ*/,
+	0x0bc7/*ே*/,
+	0x0bc8/*ை*/,
+	0x0bca/*ொ*/,
+	0x0bcb/*ோ*/,
+	0x0bcc/*ௌ*/
+};
+
+static Tmap t3[] =
+{
+	{0x0b95/*க*/, 0xe211/**/},
+	{0x0b99/*ங*/, 0xe221/**/},
+	{0x0b9a/*ச*/, 0xe231/**/},
+	{0x0b9c/*ஜ*/, 0xe331/**/},
+	{0x0b9e/*ஞ*/, 0xe241/**/},
+	{0x0b9f/*ட*/, 0xe251/**/},
+	{0x0ba3/*ண*/, 0xe261/**/},
+	{0x0ba4/*த*/, 0xe271/**/},
+	{0x0ba8/*ந*/, 0xe281/**/},
+	{0x0ba9/*ன*/, 0xe321/**/},
+	{0x0baa/*ப*/, 0xe291/**/},
+	{0x0bae/*ம*/, 0xe2a1/**/},
+	{0x0baf/*ய*/, 0xe2b1/**/},
+	{0x0bb0/*ர*/, 0xe2c1/**/},
+	{0x0bb1/*ற*/, 0xe311/**/},
+	{0x0bb2/*ல*/, 0xe2d1/**/},
+	{0x0bb3/*ள*/, 0xe301/**/},
+	{0x0bb4/*ழ*/, 0xe2f1/**/},
+	{0x0bb5/*வ*/, 0xe2e1/**/},
+ 	{0x0bb6/*ஶ*/, 0xe341/**/},
+	{0x0bb7/*ஷ*/, 0xe351/**/},
+	{0x0bb8/*ஸ*/, 0xe361/**/},
+	{0x0bb9/*ஹ*/, 0xe371/**/}
+};
+
+static Rune
+findbytune(Tmap *tab, int size, Rune t)
+{
+	int i;
+
+	for(i = 0; i < size; i++)
+		if(tab[i].t == t)
+			return tab[i].u;
+	return Runeerror;
+}
+
+static Rune
+findbyuni(Tmap *tab, int size, Rune u)
+{
+	int i;
+
+	for(i = 0; i < size; i++)
+		if(tab[i].u == u)
+			return tab[i].t;
+	return Runeerror;
+}
+
+static int
+findindex(Rune *rstr, int size, Rune r)
+{
+	int i;
+
+	for(i = 0; i < size; i++)
+		if(rstr[i] == r)
+			return i;
+	return -1;
+}
+
+void
+tune_in(int fd, long *x, struct convert *out)
+{
+	Biobuf b;
+	Rune rbuf[N];
+	Rune *r, *er, tr;
+	int c, i;
+	
+	USED(x);
+	r = rbuf;
+	er = rbuf+N-3;
+	Binit(&b, fd, OREAD);
+	while((c = Bgetrune(&b)) != Beof){
+		ninput += b.runesize;
+		if(r >= er){
+			OUT(out, rbuf, r-rbuf);
+			r = rbuf;
+		}
+		if(c>=0xe210/**/ && c <= 0xe38c/**/ && (i = c%16) < nelem(t2)){
+			if(c >= 0xe380/**/){
+				*r++ = 0x0b95/*க*/;
+				*r++ = 0x0bcd/*்*/;
+				*r++ = 0x0bb7/*ஷ*/;
+			}else
+				*r++ = findbytune(t3, nelem(t3), c-i+1);
+			if(i != 1)
+				*r++ = t2[i];
+		}else if((tr = findbytune(t1, nelem(t1), c)) != Runeerror)
+			*r++ = tr;
+		else switch(c){
+			case 0xe3d0/**/:
+				*r++ = 0x0ba3/*ண*/; *r++ = 0x0bbe/*ா*/;
+				break;
+			case 0xe3d1/**/:
+				*r++ = 0x0bb1/*ற*/; *r++ = 0x0bbe/*ா*/;
+				break;
+			case 0xe3d2/**/:
+				*r++ = 0x0ba9/*ன*/; *r++ = 0x0bbe/*ா*/;
+				break;
+			case 0xe3d4/**/:
+				*r++ = 0x0ba3/*ண*/; *r++ = 0x0bc8/*ை*/;
+				break;
+			case 0xe3d5/**/:
+				*r++ = 0x0bb2/*ல*/; *r++ = 0x0bc8/*ை*/;
+				break;
+			case 0xe3d6/**/:
+				*r++ = 0x0bb3/*ள*/; *r++ = 0x0bc8/*ை*/;
+				break;
+			case 0xe3d7/**/:
+				*r++ = 0x0ba9/*ன*/; *r++ = 0x0bc8/*ை*/;
+				break;
+			case 0xe38d/**/:
+				*r++ = 0x0bb6/*ஶ*/; *r++ = 0x0bcd/*்*/; *r++ = 0x0bb0/*ர*/; *r++ = 0x0bc0/*ீ*/;
+				break;
+			default: 
+				if(c >= 0xe200 && c <= 0xe3ff){
+					if(squawk)
+						EPR "%s: rune 0x%x not in output cs\n", argv0, c);
+					nerrors++;
+					if(clean)
+						break;
+					c = BADMAP;
+				}
+				*r++ = c;
+				break;
+		}
+	}
+	if(r > rbuf)
+		OUT(out, rbuf, r-rbuf);
+	OUT(out, rbuf, 0);
+}
+
+void
+tune_out(Rune *r, int n, long *x)
+{
+	static int state = 0;
+	static Rune lastr;
+	Rune *er, tr, rr;
+	char *p;
+	int i;
+
+	USED(x);
+	nrunes += n;
+	er = r+n;
+	for(p = obuf; r < er; r++){
+		switch(state){
+		case 0:
+		case0:
+			if((tr = findbyuni(t3, nelem(t3), *r)) != Runeerror){
+				lastr = tr;
+				state = 1;
+			}else if(*r == 0x0b92/*ஒ*/){
+				lastr = 0xe20a/**/;
+				state = 3;
+			}else if((tr = findbyuni(t1, nelem(t1), *r)) != Runeerror)
+				p += runetochar(p, &tr);
+			else
+				p += runetochar(p, r);
+			break;
+		case 1:
+		case1:
+			if((i = findindex(t2, nelem(t2), *r)) != -1){
+				if(lastr && lastr != Runeerror)
+					lastr += i-1;
+				if(*r ==0x0bc6/*ெ*/)
+					state = 5;
+				else if(*r ==0x0bc7/*ே*/)
+					state = 4;
+				else if(lastr == 0xe210/**/)
+					state = 2;
+				else if(lastr == 0xe340/**/)
+					state = 6;
+				else{
+					if(lastr)
+						p += runetochar(p, &lastr);
+					state = 0;
+				}
+			}else if(lastr && lastr != Runeerror && (*r == 0x00b2/*²*/ || *r == 0x00b3/*³*/ || *r == 0x2074/*⁴*/)){
+				if(squawk)
+					EPR "%s: character <U+%.4X, U+%.4X> not in output cs\n", argv0, lastr, *r);
+				lastr = clean ? 0 : Runeerror;
+				nerrors++;
+			}else{
+				if(lastr)
+					p += runetochar(p, &lastr);
+				state = 0;
+				goto case0;
+			}
+			break;
+		case 2:
+			if(*r == 0x0bb7/*ஷ*/){
+				lastr = 0xe381/**/;
+				state = 1;
+				break;
+			}
+			p += runetochar(p, &lastr);
+			state = 0;
+			goto case0;
+		case 3:
+			state = 0;
+			if(*r == 0x0bd7/*ௗ*/){
+				rr = 0xe20c/**/;
+				p += runetochar(p, &rr);
+				break;
+			}
+			p += runetochar(p, &lastr);
+			goto case0;
+		case 4:
+			state = 0;
+			if(*r == 0x0bbe/*ா*/){
+				if(lastr){
+					if(lastr != Runeerror)
+						lastr += 3;
+					p += runetochar(p, &lastr);
+				}
+				break;
+			}
+			if(lastr)
+				p += runetochar(p, &lastr);
+			goto case0;
+		case 5:
+			state = 0;
+			if(*r == 0x0bbe/*ா*/ || *r == 0x0bd7/*ௗ*/){
+				if(lastr){
+					if(lastr != Runeerror)
+						lastr += *r == 0x0bbe/*ா*/ ? 3 : 5;
+					p += runetochar(p, &lastr);
+				}
+				break;
+			}
+			if(lastr)
+				p += runetochar(p, &lastr);
+			goto case0;
+		case 6:
+			if(*r == 0x0bb0/*ர*/){
+				state = 7;
+				break;
+			}
+			p += runetochar(p, &lastr);
+			state = 0;
+			goto case0;
+		case 7:
+			if(*r == 0x0bc0/*ீ*/){
+				rr = 0xe38d/**/;
+				p += runetochar(p, &rr);
+				state = 0;
+				break;
+			}
+			p += runetochar(p, &lastr);
+			lastr = 0xe2c1/**/;
+			state = 1;
+			goto case1;
+		}
+	}
+	if(n == 0 && state != 0){
+		if(lastr)
+			p += runetochar(p, &lastr);
+		state = 0;
+	}
+	noutput += p-obuf;
+	write(1, obuf, p-obuf);
+}