/*  * This file is part of the UCB release of Plan 9. It is subject to the license * terms in the LICENSE file found in the top-level directory of this * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No * part of the UCB release of Plan 9, including this file, may be copied, * modified, propagated, or distributed except according to the terms contained * in the LICENSE file. */ #include	<u.h>#include	<libc.h>#include	"compat.h"#include	"kbd.h"#include   "ksym2utf.h" enum{	VKSpecial = 0xff00, 	/*	 * plan 9 key mappings	 */	Spec=		0xF800, 	PF=		Spec|0x20,	/* num pad function key */	View=		Spec|0x00,	/* view (shift window up) */	KF=		0xF000,	/* function key (begin Unicode private space) */	Shift=		Spec|0x60,	Break=		Spec|0x61,	Ctrl=		Spec|0x62,	Latin=		Spec|0x63,	Caps=		Spec|0x64,	Num=		Spec|0x65,	Middle=		Spec|0x66,	No=		0x00,		/* peter */ 	Home=		KF|13,	Up=		KF|14,	Pgup=		KF|15,	Print=		KF|16,	Left=		KF|17,	Right=		KF|18,	End=		'\r',	Down=		View,	Pgdown=		KF|19,	Ins=		KF|20,	Del=		0x7F,	Scroll=		KF|21, 	Esc = 0x1b,	Delete = 0x7f,}; static Rune vnckeys[] ={[0x00]	No,	No,	No,	No,	No,	No,	No,	No,[0x08]	'\b',	'\t',	'\r',	No,	No,	'\n',	No,	No,[0x10]	No,	No,	No,	No,	Scroll,	No,	No,	No,[0x18]	No,	No,	No,	Esc,	No,	No,	No,	No,[0x20]	No,	No,	No,	No,	No,	No,	No,	No,[0x28]	No,	No,	No,	No,	No,	No,	No,	No,[0x30]	No,	No,	No,	No,	No,	No,	No,	No,[0x38]	No,	No,	No,	No,	No,	No,	No,	No,[0x40]	No,	No,	No,	No,	No,	No,	No,	No,[0x48]	No,	No,	No,	No,	No,	No,	No,	No,[0x50]	Home,	Left,	Up,	Right,	Down,	Pgup,	Pgdown,	No,[0x58]	No,	No,	No,	No,	No,	No,	No,	No,[0x60]	No,	Print,	No,	Ins,	No,	No,	No,	No,[0x68]	No,	No,	No,	Break,	No,	No,	No,	No,[0x70]	No,	No,	No,	No,	No,	No,	No,	No,[0x78]	No,	No,	No,	No,	No,	No,	No,	Num,[0x80]	No,	No,	No,	No,	No,	No,	No,	No,[0x88]	No,	No,	No,	No,	No,	No,	No,	No,[0x90]	No,	No,	No,	No,	No,	No,	No,	No,[0x98]	No,	No,	No,	No,	No,	No,	No,	No,[0xa0]	No,	No,	No,	No,	No,	No,	No,	No,[0xa8]	No,	No,	'*',	'+',	No,	'-',	'.',	'/',[0xb0]	'0',	'1',	'2',	'3',	'4',	'5',	'6',	'7',[0xb8]	'8',	'9',	No,	No,	No,	'=',	No,	No,[0xc0]	No,	No,	No,	No,	No,	No,	No,	No,[0xc8]	No,	No,	No,	No,	No,	No,	No,	No,[0xd0]	No,	No,	No,	No,	No,	No,	No,	No,[0xd8]	No,	No,	No,	No,	No,	No,	No,	No,[0xe0]	No,	Shift,	Shift,	Ctrl,	Ctrl,	Caps,	Caps,	No,[0xe8]	No,	Latin,	Latin,	No,	No,	No,	No,	No,[0xf0]	No,	No,	No,	No,	No,	No,	No,	No,[0xf8]	No,	No,	No,	No,	No,	No,	No,	Delete,}; /* *  keyboard interrupt */voidvncputc(int keyup, int c){	int i;	static int esc1, esc2;	static int alt, caps, ctl, num, shift;	static int collecting, nk;	static Rune kc[5]; 	if(caps && c<='z' && c>='a')		c += 'A' - 'a'; 	/* 	 *  character mapping	 */	if((c & VKSpecial) == VKSpecial){		c = vnckeys[c & 0xff];		if(c == No)			return;	}	/*	 * map an xkeysym onto a utf-8 char	 */	if((c & 0xff00) && c < nelem(ksym2utf) && ksym2utf[c] != 0)			c = ksym2utf[c]; 	/*	 *  keyup only important for shifts	 */	if(keyup){		switch(c){		case Latin:			alt = 0;			break;		case Shift:			shift = 0;			break;		case Ctrl:			ctl = 0;			break;		}		return;	} 	/* 	 *  normal character	 */	if(!(c & (Spec|KF))){		if(ctl){			c &= 0x1f;		}		if(!collecting){			kbdputc(c);			return;		}		kc[nk++] = c;		c = latin1(kc, nk);		if(c < -1)	/* need more keystrokes */			return;		if(c != -1)	/* valid sequence */			kbdputc(c);		else	/* dump characters */			for(i=0; i<nk; i++)				kbdputc(kc[i]);		nk = 0;		collecting = 0;		return;	}else{		switch(c){		case Caps:			caps ^= 1;			return;		case Num:			num ^= 1;			return;		case Shift:			shift = 1;			return;		case Latin:			alt = 1;			collecting = 1;			nk = 0;			return;		case Ctrl:			ctl = 1;			return;		}	}	kbdputc(c);}