ref: 608e406ec0d81e33bb6965c0ab6d25d5d12753cf
dir: /kbd.c/
#include <u.h> #include <libc.h> #include <thread.h> #include <keyboard.h> #include "kbd.h" void kbdproc(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}; nbsend(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; } void closekbd(Kbdctl *kc) { close(kc->fd); kc->fd = -1; threadint(kc->pid); }