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BSD 4_4_Lite2 release
[unix-history] / usr / src / contrib / nvi.1.43 / svi / svi_term.c
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)svi_term.c 9.1 (Berkeley) 11/9/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "compat.h"
#include <curses.h>
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "../vi/vcmd.h"
#include "excmd.h"
#include "svi_screen.h"
/*
* XXX
* THIS REQUIRES THAT ALL SCREENS SHARE A TERMINAL TYPE.
*/
typedef struct _tklist {
char *ts; /* Key's termcap string. */
char *output; /* Corresponding vi command. */
char *name; /* Name. */
u_char value; /* Special value (for lookup). */
} TKLIST;
static TKLIST const c_tklist[] = { /* Command mappings. */
#ifdef SYSV_CURSES
{"kil1", "O", "insert line"},
{"kdch1", "x", "delete character"},
{"kcud1", "j", "cursor down"},
{"kel", "D", "delete to eol"},
{"kind", "\004", "scroll down"},
{"kll", "$", "go to eol"},
{"khome", "^", "go to sol"},
{"kich1", "i", "insert at cursor"},
{"kdl1", "dd", "delete line"},
{"kcub1", "h", "cursor left"},
{"knp", "\006", "page down"},
{"kpp", "\002", "page up"},
{"kri", "\025", "scroll up"},
{"ked", "dG", "delete to end of screen"},
{"kcuf1", "l", "cursor right"},
{"kcuu1", "k", "cursor up"},
#else
{"kA", "O", "insert line"},
{"kD", "x", "delete character"},
{"kd", "j", "cursor down"},
{"kE", "D", "delete to eol"},
{"kF", "\004", "scroll down"},
{"kH", "$", "go to eol"},
{"kh", "^", "go to sol"},
{"kI", "i", "insert at cursor"},
{"kL", "dd", "delete line"},
{"kl", "h", "cursor left"},
{"kN", "\006", "page down"},
{"kP", "\002", "page up"},
{"kR", "\025", "scroll up"},
{"kS", "dG", "delete to end of screen"},
{"kr", "l", "cursor right"},
{"ku", "k", "cursor up"},
#endif
{NULL},
};
static TKLIST const m1_tklist[] = { /* Input mappings (lookup). */
{NULL},
};
static TKLIST const m2_tklist[] = { /* Input mappings (set or delete). */
#ifdef SYSV_CURSES
{"kcud1", "\033ja", "cursor down"},
{"kcub1", "\033ha", "cursor left"},
{"kcuu1", "\033ka", "cursor up"},
{"kcuf1", "\033la", "cursor right"},
#else
{"kd", "\033ja", "cursor down"},
{"kl", "\033ha", "cursor left"},
{"ku", "\033ka", "cursor up"},
{"kr", "\033la", "cursor right"},
#endif
{NULL},
};
/*
* svi_term_init --
* Initialize the special keys defined by the termcap/terminfo entry.
*/
int
svi_term_init(sp)
SCR *sp;
{
KEYLIST *kp;
SEQ *qp;
TKLIST const *tkp;
size_t len;
char *sbp, *s, *t, sbuf[1024];
/* Command mappings. */
for (tkp = c_tklist; tkp->name != NULL; ++tkp) {
#ifdef SYSV_CURSES
if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
continue;
#else
sbp = sbuf;
if ((t = tgetstr(tkp->ts, &sbp)) == NULL)
continue;
#endif
if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t),
tkp->output, strlen(tkp->output), SEQ_COMMAND,
SEQ_NOOVERWRITE | SEQ_SCREEN))
return (1);
}
/* Input mappings needing to be looked up. */
for (tkp = m1_tklist; tkp->name != NULL; ++tkp) {
#ifdef SYSV_CURSES
if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
continue;
#else
sbp = sbuf;
if ((t = tgetstr(tkp->ts, &sbp)) == NULL)
continue;
#endif
for (kp = keylist;; ++kp)
if (kp->value == tkp->value)
break;
if (kp == NULL)
continue;
if (seq_set(sp, tkp->name, strlen(tkp->name), t, strlen(t),
&kp->ch, 1, SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
return (1);
}
/* Input mappings that are already set or are text deletions. */
for (tkp = m2_tklist; tkp->name != NULL; ++tkp) {
#ifdef SYSV_CURSES
if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
continue;
#else
sbp = sbuf;
if ((t = tgetstr(tkp->ts, &sbp)) == NULL)
continue;
#endif
/*
* !!!
* Some terminals' <cursor_left> keys send single <backspace>
* characters. This is okay in command mapping, but not okay
* in input mapping. That combination is the only one we'll
* ever see, hopefully, so kluge it here for now.
*/
if (!strcmp(t, "\b"))
continue;
if (tkp->output == NULL) {
if (seq_set(sp, tkp->name, strlen(tkp->name),
t, strlen(t), NULL, 0,
SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
return (1);
} else
if (seq_set(sp, tkp->name, strlen(tkp->name),
t, strlen(t), tkp->output, strlen(tkp->output),
SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
return (1);
}
/* Rework any function key mappings. */
for (qp = sp->gp->seqq.lh_first; qp != NULL; qp = qp->q.le_next) {
if (!F_ISSET(qp, SEQ_FUNCMAP))
continue;
(void)svi_fmap(sp, qp->stype,
qp->input, qp->ilen, qp->output, qp->olen);
}
/* Set up the visual bell information. */
t = sbuf;
if (tgetstr("vb", &t) != NULL && (len = t - sbuf) != 0) {
MALLOC_RET(sp, s, char *, len);
memmove(s, sbuf, len);
if (SVP(sp)->VB != NULL)
free(SVP(sp)->VB);
SVP(sp)->VB = s;
return (0);
}
return (0);
}
/*
* svi_term_end --
* End the special keys defined by the termcap/terminfo entry.
*/
int
svi_term_end(sp)
SCR *sp;
{
SEQ *qp, *nqp;
/* Delete screen specific mappings. */
for (qp = sp->gp->seqq.lh_first; qp != NULL; qp = nqp) {
nqp = qp->q.le_next;
if (!F_ISSET(qp, SEQ_SCREEN))
continue;
(void)seq_mdel(qp);
}
return (0);
}
/*
* svi_fmap --
* Map a function key.
*/
int
svi_fmap(sp, stype, from, flen, to, tlen)
SCR *sp;
enum seqtype stype;
CHAR_T *from, *to;
size_t flen, tlen;
{
size_t nlen;
int nf;
char *p, *t, keyname[64];
/* If the terminal isn't initialized, there's nothing to do. */
if (!F_ISSET(SVP(sp), SVI_CURSES_INIT))
return (0);
#ifdef SYSV_CURSES
(void)snprintf(keyname, sizeof(keyname), "kf%d", atoi(from + 1));
if ((t = tigetstr(keyname)) == NULL || t == (char *)-1)
t = NULL;
#else
/*
* !!!
* Historically, the 4BSD termcap code didn't support functions keys
* greater than 9. This was silently enforced -- asking for key k12
* returned the value for k1. We try and get around this by using
* the tables specified in the terminfo(TI_ENV) man page from the 3rd
* Edition SVID. This assumes that the implementors of any System V
* compatibility code or an extended termcap used those codes.
*/
{ int n; char *sbp, sbuf[1024];
static const char codes[] = {
/* 0-10 */ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ';',
/* 11-19 */ '1', '2', '3', '4', '5', '6', '7', '8', '9',
/* 20-63 */ 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm',
'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
};
if ((n = atoi(from + 1)) > 63) {
p = msg_print(sp, from, &nf);
msgq(sp, M_ERR,
"228|Termcap has no code for the %s function key", p);
if (nf)
FREE_SPACE(sp, p, 0);
return (1);
}
(void)snprintf(keyname, sizeof(keyname),
"%c%c", n <= 10 ? 'k' : 'F', codes[n]);
sbp = sbuf;
t = tgetstr(keyname, &sbp);
}
#endif
if (t == NULL) {
p = msg_print(sp, from, &nf);
msgq(sp, M_ERR, "229|This terminal has no %s key", p);
if (nf)
FREE_SPACE(sp, p, 0);
return (1);
}
nlen = snprintf(keyname,
sizeof(keyname), "function key %d", atoi(from + 1));
return (seq_set(sp, keyname, nlen, t, strlen(t),
to, tlen, stype, SEQ_NOOVERWRITE | SEQ_SCREEN | SEQ_USERDEF));
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.