#include <u.h>#include <libc.h>#include <thread.h>#include <keyboard.h>#include "kbd.h" /* example voidthreadmain(int, char**){	Kbdctl *kctl;	Key k;	Alt a[] = {		{ nil, &k, CHANRCV },		{ nil, nil, CHANEND },	}; 	kctl = initkbd();	if(kctl == nil)		sysfatal("initkbd: %r");	a[0].c = kctl->c;	for(;;){		if(alt(a) == 0){			if(k.k == Kdel)				break;			else				fprint(2, "KEY '%C' (mods=%b)\n", k.k, k.mods);		}	}	closekbd(kctl);	threadexitsall(nil);}*/ static voidkbdproc(void *v){	Kbdctl *kc;	char buf[128], buf2[128], *s;	long n;	Rune r;	Key k;	int mods = 0; 	kc = v;	threadsetname("kbdproc");	buf[0] = 0;	buf2[0] = 0;	buf2[1] = 0;	while(kc->fd >= 0){		if(buf[0] != 0){			n = strlen(buf)+1;			memmove(buf, buf+n, sizeof(buf)-n);		}		if (buf[0] == 0) {			n = read(kc->fd, buf, sizeof(buf)-1);			if (n <= 0){				yield();				if(kc->fd < 0)					threadexits(nil);				break;			}			buf[n-1] = 0;			buf[n] = 0;		}		switch(buf[0]){		case 'c':			if(chartorune(&r, buf+1) > 0 && r != Runeerror){				k = (Key){ r, mods };				nbsend(kc->c, &k);			}		default:			continue;		case 'k':			s = buf+1;			while(*s){				s += chartorune(&r, s);				if(utfrune(buf2+1, r) == nil){					if(r == Kctl)						mods |= Mctrl;					else if(r == Kalt)						mods |= Malt;					else if(r == Kshift)						mods |= Mshift;					else{						k = (Key){r, mods};						send(kc->c, &k);					}				}			}			break;		case 'K':			s = buf2+1;			while(*s){				s += chartorune(&r, s);				if(utfrune(buf+1, r) == nil) {					if(r == Kctl)						mods ^= Mctrl;					else if(r == Kalt)						mods ^= Malt;					else if(r == Kshift)						mods ^= Mshift;				}			}			break;		}		strcpy(buf2, buf);	}} Kbdctl*initkbd(void){	Kbdctl *kc; 	kc = malloc(sizeof *kc);	if(kc == nil)		return nil;	kc->fd = open("/dev/kbd", OREAD);	if(kc->fd < 0){		free(kc);		return nil;	}	kc->c = chancreate(sizeof(Key), 0);	if(kc->c == nil){		close(kc->fd);		free(kc);		return nil;	}	kc->pid = proccreate(kbdproc, kc, 8192);	return kc;} voidclosekbd(Kbdctl *kc){	close(kc->fd);	kc->fd = -1;	threadint(kc->pid);}