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/* $OpenBSD: kbd.c,v 1.11 2002/02/13 22:36:58 vincent Exp $ */
/*
* Terminal independent keyboard handling.
*/
#define EXTERN
#include "def.h"
#include "kbd.h"
#include "key.h"
#ifndef NO_MACRO
#include "macro.h"
#endif /* !NO_MACRO */
#ifdef DO_METAKEY
#ifndef METABIT
#define METABIT 0x80
#endif /* !METABIT */
#ifndef NO_DPROMPT
#define PROMPTL 80
char prompt[PROMPTL] = "", *promptp = prompt;
#endif /* !NO_DPROMPT */
static int use_metakey = TRUE;
static int pushed = FALSE;
static int pushedc;
MAP_ELEMENT *ele;
/*
* Toggle the value of use_metakey
*/
int
do_meta(f, n)
int f, n;
{
if (f & FFARG)
use_metakey = n > 0;
else
use_metakey = !use_metakey;
ewprintf("Meta keys %sabled", use_metakey ? "en" : "dis");
return TRUE;
}
#endif /* DO_METAKEY */
#ifdef BSMAP
static int bs_map = BSMAP;
/*
* Toggle backspace mapping
*/
int
bsmap(f, n)
int f, n;
{
if (f & FFARG)
bs_map = n > 0;
else
bs_map = !bs_map;
ewprintf("Backspace mapping %sabled", bs_map ? "en" : "dis");
return TRUE;
}
#endif /* BSMAP */
void
ungetkey(c)
int c;
{
#ifdef DO_METAKEY
if (use_metakey && pushed && c == CCHR('['))
pushedc |= METABIT;
else
#endif /* DO_METAKEY */
pushedc = c;
pushed = TRUE;
}
int
getkey(flag)
int flag;
{
int c;
#ifndef NO_DPROMPT
if (flag && !pushed) {
if (prompt[0] != '\0' && ttwait(2000)) {
/* avoid problems with % */
ewprintf("%s", prompt);
/* put the cursor back */
update();
epresf = KPROMPT;
}
if (promptp > prompt)
*(promptp - 1) = ' ';
}
#endif /* !NO_DPROMPT */
if (pushed) {
c = pushedc;
pushed = FALSE;
} else
c = getkbd();
#ifdef BSMAP
if (bs_map)
if (c == CCHR('H'))
c = CCHR('?');
else if (c == CCHR('?'))
c = CCHR('H');
#endif /* BSMAP */
#ifdef DO_METAKEY
if (use_metakey && (c & METABIT)) {
pushedc = c & ~METABIT;
pushed = TRUE;
c = CCHR('[');
}
#endif /* DO_METAKEY */
#ifndef NO_DPROMPT
if (flag && promptp < &prompt[PROMPTL - 5]) {
promptp = keyname(promptp,
sizeof(prompt) - (promptp - prompt) - 1, c);
*promptp++ = '-';
*promptp = '\0';
}
#endif /* !NO_DPROMPT */
return c;
}
/*
* doscan scans a keymap for a keyboard character and returns a pointer
* to the function associated with that character. Sets ele to the
* keymap element the keyboard was found in as a side effect.
*/
PF
doscan(map, c, newmap)
KEYMAP *map;
int c;
KEYMAP **newmap;
{
MAP_ELEMENT *elec = &map->map_element[0];
MAP_ELEMENT *last = &map->map_element[map->map_num];
PF ret;
while (elec < last && c > elec->k_num)
elec++;
/* used by prefix and binding code */
ele = elec;
if (elec >= last || c < elec->k_base)
ret = map->map_default;
else
ret = elec->k_funcp[c - elec->k_base];
if (ret == NULL && newmap != NULL)
*newmap = elec->k_prefmap;
return ret;
}
int
doin()
{
KEYMAP *curmap;
PF funct;
#ifndef NO_DPROMPT
*(promptp = prompt) = '\0';
#endif /* !NO_DPROMPT */
curmap = curbp->b_modes[curbp->b_nmodes]->p_map;
key.k_count = 0;
while ((funct = doscan(curmap, (key.k_chars[key.k_count++] =
getkey(TRUE)), &curmap)) == NULL)
/*nothing*/;
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO)
macro[macrocount++].m_funct = funct;
#endif /* !NO_MACRO */
return (*funct)(0, 1);
}
int
rescan(f, n)
int f, n;
{
int c;
KEYMAP *curmap;
int i;
PF fp = NULL;
int mode = curbp->b_nmodes;
for (;;) {
if (ISUPPER(key.k_chars[key.k_count - 1])) {
c = TOLOWER(key.k_chars[key.k_count - 1]);
curmap = curbp->b_modes[mode]->p_map;
for (i = 0; i < key.k_count - 1; i++) {
if ((fp = doscan(curmap, (key.k_chars[i]), &curmap))
!= NULL)
break;
}
if (fp == NULL) {
if ((fp = doscan(curmap, c, NULL)) == NULL)
while ((fp = doscan(curmap,
key.k_chars[key.k_count++] =
getkey(TRUE), &curmap)) == NULL)
/*nothing*/;
if (fp != rescan) {
#ifndef NO_MACRO
if (macrodef && macrocount <= MAXMACRO)
macro[macrocount - 1].m_funct
= fp;
#endif /* !NO_MACRO */
return (*fp)(f, n);
}
}
}
/* try previous mode */
if (--mode < 0)
return ABORT;
curmap = curbp->b_modes[mode]->p_map;
for (i = 0; i < key.k_count; i++) {
if ((fp = doscan(curmap, (key.k_chars[i]), &curmap)) != NULL)
break;
}
if (fp == NULL) {
while ((fp = doscan(curmap, key.k_chars[i++] =
getkey(TRUE), &curmap)) == NULL)
/*nothing*/;
key.k_count = i;
}
if (fp != rescan && i >= key.k_count - 1) {
#ifndef NO_MACRO
if (macrodef && macrocount <= MAXMACRO)
macro[macrocount - 1].m_funct = fp;
#endif /* !NO_MACRO */
return (*fp)(f, n);
}
}
}
int
universal_argument(f, n)
int f, n;
{
KEYMAP *curmap;
PF funct;
int c;
int nn = 4;
if (f & FFUNIV)
nn *= n;
for (;;) {
key.k_chars[0] = c = getkey(TRUE);
key.k_count = 1;
if (c == '-')
return negative_argument(f, nn);
if (c >= '0' && c <= '9')
return digit_argument(f, nn);
curmap = curbp->b_modes[curbp->b_nmodes]->p_map;
while ((funct = doscan(curmap, c, &curmap)) == NULL) {
key.k_chars[key.k_count++] = c = getkey(TRUE);
}
if (funct != universal_argument) {
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO - 1) {
if (f & FFARG)
macrocount--;
macro[macrocount++].m_count = nn;
macro[macrocount++].m_funct = funct;
}
#endif /* !NO_MACRO */
return (*funct)(FFUNIV, nn);
}
nn <<= 2;
}
}
/* ARGSUSED */
int
digit_argument(f, n)
int f, n;
{
KEYMAP *curmap;
PF funct;
int nn, c;
nn = key.k_chars[key.k_count - 1] - '0';
for (;;) {
c = getkey(TRUE);
if (c < '0' || c > '9')
break;
nn *= 10;
nn += c - '0';
}
key.k_chars[0] = c;
key.k_count = 1;
curmap = curbp->b_modes[curbp->b_nmodes]->p_map;
while ((funct = doscan(curmap, c, &curmap)) == NULL) {
key.k_chars[key.k_count++] = c = getkey(TRUE);
}
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO - 1) {
if (f & FFARG)
macrocount--;
else
macro[macrocount - 1].m_funct = universal_argument;
macro[macrocount++].m_count = nn;
macro[macrocount++].m_funct = funct;
}
#endif /* !NO_MACRO */
return (*funct)(FFOTHARG, nn);
}
int
negative_argument(f, n)
int f, n;
{
KEYMAP *curmap;
PF funct;
int c;
int nn = 0;
for (;;) {
c = getkey(TRUE);
if (c < '0' || c > '9')
break;
nn *= 10;
nn += c - '0';
}
if (nn)
nn = -nn;
else
nn = -n;
key.k_chars[0] = c;
key.k_count = 1;
curmap = curbp->b_modes[curbp->b_nmodes]->p_map;
while ((funct = doscan(curmap, c, &curmap)) == NULL) {
key.k_chars[key.k_count++] = c = getkey(TRUE);
}
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO - 1) {
if (f & FFARG)
macrocount--;
else
macro[macrocount - 1].m_funct = universal_argument;
macro[macrocount++].m_count = nn;
macro[macrocount++].m_funct = funct;
}
#endif /* !NO_MACRO */
return (*funct)(FFNEGARG, nn);
}
/*
* Insert a character. While defining a macro, create a "LINE" containing
* all inserted characters.
*/
int
selfinsert(f, n)
int f, n;
{
#ifndef NO_MACRO
LINE *lp;
#endif /* !NO_MACRO */
int c;
int count;
if (n < 0)
return FALSE;
if (n == 0)
return TRUE;
c = key.k_chars[key.k_count - 1];
#ifndef NO_MACRO
if (macrodef && macrocount < MAXMACRO) {
if (f & FFARG)
macrocount -= 2;
/* last command was insert -- tack on the end */
if (lastflag & CFINS) {
macrocount--;
/* Ensure the line can handle the new characters */
if (maclcur->l_size < maclcur->l_used + n) {
if (lrealloc(maclcur, maclcur->l_used + n) ==
FALSE)
return FALSE;
}
maclcur->l_used += n;
/* Copy in the new data */
for (count = maclcur->l_used - n;
count < maclcur->l_used; count++)
maclcur->l_text[count] = c;
} else {
macro[macrocount - 1].m_funct = insert;
if ((lp = lalloc(n)) == NULL)
return FALSE;
lp->l_bp = maclcur;
lp->l_fp = maclcur->l_fp;
maclcur->l_fp = lp;
maclcur = lp;
for (count = 0; count < n; count++)
lp->l_text[count] = c;
}
thisflag |= CFINS;
}
#endif /* !NO_MACRO */
if (c == '\n') {
do {
count = lnewline();
} while (--n && count == TRUE);
return count;
}
/* overwrite mode */
if (curbp->b_flag & BFOVERWRITE) {
lchange(WFEDIT);
while (curwp->w_doto < llength(curwp->w_dotp) && n--)
lputc(curwp->w_dotp, curwp->w_doto++, c);
if (n <= 0)
return TRUE;
}
return linsert(n, c);
}
/*
* This could be implemented as a keymap with everthing defined as self-insert.
*/
int
quote(f, n)
int f, n;
{
int c;
key.k_count = 1;
if ((key.k_chars[0] = getkey(TRUE)) >= '0' && key.k_chars[0] <= '7') {
key.k_chars[0] -= '0';
if ((c = getkey(TRUE)) >= '0' && c <= '7') {
key.k_chars[0] <<= 3;
key.k_chars[0] += c - '0';
if ((c = getkey(TRUE)) >= '0' && c <= '7') {
key.k_chars[0] <<= 3;
key.k_chars[0] += c - '0';
} else
ungetkey(c);
} else
ungetkey(c);
}
return selfinsert(f, n);
}
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