477 lines
12 KiB
C
477 lines
12 KiB
C
/*-
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* Copyright (c) 1993, 1994
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* The Regents of the University of California. All rights reserved.
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* Copyright (c) 1993, 1994, 1995, 1996
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* Keith Bostic. All rights reserved.
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*
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* See the LICENSE file for redistribution information.
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*/
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#include "config.h"
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#ifndef lint
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static const char sccsid[] = "$Id: cl_term.c,v 10.34 2013/12/07 16:21:14 wjenkner Exp $";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/queue.h>
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#include <sys/stat.h>
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#include <bitstring.h>
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_TERM_H
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#include <term.h>
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#endif
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#include <termios.h>
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#include <unistd.h>
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#include "../common/common.h"
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#include "cl.h"
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static int cl_pfmap __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
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/*
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* XXX
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* THIS REQUIRES THAT ALL SCREENS SHARE A TERMINAL TYPE.
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*/
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typedef struct _tklist {
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char *ts; /* Key's termcap string. */
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char *output; /* Corresponding vi command. */
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char *name; /* Name. */
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u_char value; /* Special value (for lookup). */
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} TKLIST;
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static TKLIST const c_tklist[] = { /* Command mappings. */
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{"kil1", "O", "insert line"},
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{"kdch1", "x", "delete character"},
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{"kcud1", "j", "cursor down"},
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{"kel", "D", "delete to eol"},
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{"kind", "\004", "scroll down"}, /* ^D */
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{"kll", "$", "go to eol"},
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{"kend", "$", "go to eol"},
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{"khome", "^", "go to sol"},
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{"kich1", "i", "insert at cursor"},
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{"kdl1", "dd", "delete line"},
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{"kcub1", "h", "cursor left"},
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{"knp", "\006", "page down"}, /* ^F */
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{"kpp", "\002", "page up"}, /* ^B */
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{"kri", "\025", "scroll up"}, /* ^U */
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{"ked", "dG", "delete to end of screen"},
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{"kcuf1", "l", "cursor right"},
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{"kcuu1", "k", "cursor up"},
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{NULL},
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};
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static TKLIST const m1_tklist[] = { /* Input mappings (lookup). */
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{NULL},
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};
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static TKLIST const m2_tklist[] = { /* Input mappings (set or delete). */
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{"kcud1", "\033ja", "cursor down"}, /* ^[ja */
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{"kcub1", "\033ha", "cursor left"}, /* ^[ha */
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{"kcuu1", "\033ka", "cursor up"}, /* ^[ka */
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{"kcuf1", "\033la", "cursor right"}, /* ^[la */
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{NULL},
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};
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/*
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* cl_term_init --
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* Initialize the special keys defined by the termcap/terminfo entry.
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*
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* PUBLIC: int cl_term_init __P((SCR *));
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*/
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int
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cl_term_init(SCR *sp)
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{
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KEYLIST *kp;
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SEQ *qp;
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TKLIST const *tkp;
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char *t;
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CHAR_T name[60];
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CHAR_T output[5];
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CHAR_T ts[20];
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CHAR_T *wp;
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size_t wlen;
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/* Command mappings. */
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for (tkp = c_tklist; tkp->name != NULL; ++tkp) {
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if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
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continue;
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CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
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MEMCPY(name, wp, wlen);
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CHAR2INT(sp, t, strlen(t), wp, wlen);
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MEMCPY(ts, wp, wlen);
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CHAR2INT(sp, tkp->output, strlen(tkp->output), wp, wlen);
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MEMCPY(output, wp, wlen);
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if (seq_set(sp, name, strlen(tkp->name), ts, strlen(t),
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output, strlen(tkp->output), SEQ_COMMAND,
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SEQ_NOOVERWRITE | SEQ_SCREEN))
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return (1);
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}
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/* Input mappings needing to be looked up. */
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for (tkp = m1_tklist; tkp->name != NULL; ++tkp) {
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if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
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continue;
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for (kp = keylist;; ++kp)
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if (kp->value == tkp->value)
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break;
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if (kp == NULL)
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continue;
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CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
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MEMCPY(name, wp, wlen);
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CHAR2INT(sp, t, strlen(t), wp, wlen);
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MEMCPY(ts, wp, wlen);
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output[0] = (UCHAR_T)kp->ch;
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if (seq_set(sp, name, strlen(tkp->name), ts, strlen(t),
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output, 1, SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
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return (1);
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}
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/* Input mappings that are already set or are text deletions. */
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for (tkp = m2_tklist; tkp->name != NULL; ++tkp) {
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if ((t = tigetstr(tkp->ts)) == NULL || t == (char *)-1)
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continue;
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/*
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* !!!
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* Some terminals' <cursor_left> keys send single <backspace>
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* characters. This is okay in command mapping, but not okay
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* in input mapping. That combination is the only one we'll
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* ever see, hopefully, so kluge it here for now.
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*/
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if (!strcmp(t, "\b"))
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continue;
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if (tkp->output == NULL) {
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CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
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MEMCPY(name, wp, wlen);
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CHAR2INT(sp, t, strlen(t), wp, wlen);
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MEMCPY(ts, wp, wlen);
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if (seq_set(sp, name, strlen(tkp->name),
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ts, strlen(t), NULL, 0,
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SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
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return (1);
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} else {
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CHAR2INT(sp, tkp->name, strlen(tkp->name), wp, wlen);
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MEMCPY(name, wp, wlen);
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CHAR2INT(sp, t, strlen(t), wp, wlen);
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MEMCPY(ts, wp, wlen);
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CHAR2INT(sp, tkp->output, strlen(tkp->output), wp, wlen);
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MEMCPY(output, wp, wlen);
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if (seq_set(sp, name, strlen(tkp->name),
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ts, strlen(t), output, strlen(tkp->output),
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SEQ_INPUT, SEQ_NOOVERWRITE | SEQ_SCREEN))
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return (1);
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}
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}
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/*
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* Rework any function key mappings that were set before the
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* screen was initialized.
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*/
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SLIST_FOREACH(qp, sp->gp->seqq, q)
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if (F_ISSET(qp, SEQ_FUNCMAP))
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(void)cl_pfmap(sp, qp->stype,
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qp->input, qp->ilen, qp->output, qp->olen);
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return (0);
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}
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/*
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* cl_term_end --
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* End the special keys defined by the termcap/terminfo entry.
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*
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* PUBLIC: int cl_term_end __P((GS *));
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*/
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int
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cl_term_end(GS *gp)
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{
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SEQ *qp, *nqp, *pre_qp = NULL;
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/* Delete screen specific mappings. */
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SLIST_FOREACH_SAFE(qp, gp->seqq, q, nqp)
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if (F_ISSET(qp, SEQ_SCREEN)) {
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if (qp == SLIST_FIRST(gp->seqq))
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SLIST_REMOVE_HEAD(gp->seqq, q);
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else
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SLIST_REMOVE_AFTER(pre_qp, q);
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(void)seq_free(qp);
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} else
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pre_qp = qp;
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return (0);
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}
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/*
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* cl_fmap --
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* Map a function key.
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*
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* PUBLIC: int cl_fmap __P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
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*/
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int
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cl_fmap(SCR *sp, seq_t stype, CHAR_T *from, size_t flen, CHAR_T *to, size_t tlen)
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{
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/* Ignore until the screen is running, do the real work then. */
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if (F_ISSET(sp, SC_VI) && !F_ISSET(sp, SC_SCR_VI))
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return (0);
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if (F_ISSET(sp, SC_EX) && !F_ISSET(sp, SC_SCR_EX))
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return (0);
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return (cl_pfmap(sp, stype, from, flen, to, tlen));
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}
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/*
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* cl_pfmap --
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* Map a function key (private version).
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*/
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static int
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cl_pfmap(SCR *sp, seq_t stype, CHAR_T *from, size_t flen, CHAR_T *to, size_t tlen)
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{
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size_t nlen;
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char *p;
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char name[64];
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CHAR_T keyname[64];
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CHAR_T ts[20];
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CHAR_T *wp;
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size_t wlen;
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(void)snprintf(name, sizeof(name), "kf%d",
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(int)STRTOL(from+1,NULL,10));
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if ((p = tigetstr(name)) == NULL ||
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p == (char *)-1 || strlen(p) == 0)
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p = NULL;
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if (p == NULL) {
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msgq_wstr(sp, M_ERR, from, "233|This terminal has no %s key");
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return (1);
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}
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nlen = SPRINTF(keyname,
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SIZE(keyname), L("function key %d"),
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(int)STRTOL(from+1,NULL,10));
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CHAR2INT(sp, p, strlen(p), wp, wlen);
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MEMCPY(ts, wp, wlen);
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return (seq_set(sp, keyname, nlen,
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ts, strlen(p), to, tlen, stype, SEQ_NOOVERWRITE | SEQ_SCREEN));
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}
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/*
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* cl_optchange --
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* Curses screen specific "option changed" routine.
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*
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* PUBLIC: int cl_optchange __P((SCR *, int, char *, u_long *));
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*/
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int
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cl_optchange(SCR *sp, int opt, char *str, u_long *valp)
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{
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CL_PRIVATE *clp;
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clp = CLP(sp);
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switch (opt) {
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case O_COLUMNS:
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case O_LINES:
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case O_TERM:
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/*
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* Changing the columns, lines or terminal require that
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* we restart the screen.
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*/
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F_SET(sp->gp, G_SRESTART);
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F_CLR(sp, SC_SCR_EX | SC_SCR_VI);
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break;
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case O_MESG:
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(void)cl_omesg(sp, clp, *valp);
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break;
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case O_WINDOWNAME:
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if (*valp) {
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F_SET(clp, CL_RENAME_OK);
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/*
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* If the screen is live, i.e. we're not reading the
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* .exrc file, update the window.
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*/
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if (sp->frp != NULL && sp->frp->name != NULL)
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(void)cl_rename(sp, sp->frp->name, 1);
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} else {
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F_CLR(clp, CL_RENAME_OK);
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(void)cl_rename(sp, NULL, 0);
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}
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break;
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}
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return (0);
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}
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/*
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* cl_omesg --
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* Turn the tty write permission on or off.
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*
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* PUBLIC: int cl_omesg __P((SCR *, CL_PRIVATE *, int));
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*/
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int
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cl_omesg(SCR *sp, CL_PRIVATE *clp, int on)
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{
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struct stat sb;
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char *tty;
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/* Find the tty, get the current permissions. */
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if ((tty = ttyname(STDERR_FILENO)) == NULL) {
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if (sp != NULL)
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msgq(sp, M_SYSERR, "stderr");
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return (1);
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}
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if (stat(tty, &sb) < 0) {
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if (sp != NULL)
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msgq(sp, M_SYSERR, "%s", tty);
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return (1);
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}
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/* Save the original status if it's unknown. */
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if (clp->tgw == TGW_UNKNOWN)
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clp->tgw = sb.st_mode & S_IWGRP ? TGW_SET : TGW_UNSET;
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/* Toggle the permissions. */
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if (on) {
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if (chmod(tty, sb.st_mode | S_IWGRP) < 0) {
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if (sp != NULL)
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msgq(sp, M_SYSERR,
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"046|messages not turned on: %s", tty);
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return (1);
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}
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} else
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if (chmod(tty, sb.st_mode & ~S_IWGRP) < 0) {
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if (sp != NULL)
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msgq(sp, M_SYSERR,
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"045|messages not turned off: %s", tty);
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return (1);
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}
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return (0);
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}
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/*
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* cl_ssize --
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* Return the terminal size.
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*
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* PUBLIC: int cl_ssize __P((SCR *, int, size_t *, size_t *, int *));
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*/
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int
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cl_ssize(SCR *sp, int sigwinch, size_t *rowp, size_t *colp, int *changedp)
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{
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struct winsize win;
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size_t col, row;
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int rval;
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char *p;
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/* Assume it's changed. */
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if (changedp != NULL)
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*changedp = 1;
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/*
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* !!!
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* sp may be NULL.
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*
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* Get the screen rows and columns. If the values are wrong, it's
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* not a big deal -- as soon as the user sets them explicitly the
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* environment will be set and the screen package will use the new
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* values.
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*
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* Try TIOCGWINSZ.
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*/
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row = col = 0;
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if (ioctl(STDERR_FILENO, TIOCGWINSZ, &win) != -1) {
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row = win.ws_row;
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col = win.ws_col;
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}
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/* If here because of suspend or a signal, only trust TIOCGWINSZ. */
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if (sigwinch) {
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/*
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* Somebody didn't get TIOCGWINSZ right, or has suspend
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* without window resizing support. The user just lost,
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* but there's nothing we can do.
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*/
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if (row == 0 || col == 0) {
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if (changedp != NULL)
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*changedp = 0;
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return (0);
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}
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/*
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* SunOS systems deliver SIGWINCH when windows are uncovered
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* as well as when they change size. In addition, we call
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* here when continuing after being suspended since the window
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* may have changed size. Since we don't want to background
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* all of the screens just because the window was uncovered,
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* ignore the signal if there's no change.
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*/
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if (sp != NULL &&
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row == O_VAL(sp, O_LINES) && col == O_VAL(sp, O_COLUMNS)) {
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if (changedp != NULL)
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*changedp = 0;
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return (0);
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}
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if (rowp != NULL)
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*rowp = row;
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if (colp != NULL)
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*colp = col;
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return (0);
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}
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/*
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* !!!
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* If TIOCGWINSZ failed, or had entries of 0, try termcap. This
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* routine is called before any termcap or terminal information
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* has been set up. If there's no TERM environmental variable set,
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* let it go, at least ex can run.
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*/
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if (row == 0 || col == 0) {
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if ((p = getenv("TERM")) == NULL)
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goto noterm;
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if (row == 0)
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if ((rval = tigetnum("lines")) < 0)
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msgq(sp, M_SYSERR, "tigetnum: lines");
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else
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row = rval;
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if (col == 0)
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if ((rval = tigetnum("cols")) < 0)
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msgq(sp, M_SYSERR, "tigetnum: cols");
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else
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col = rval;
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}
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/* If nothing else, well, it's probably a VT100. */
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noterm: if (row == 0)
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row = 24;
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if (col == 0)
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col = 80;
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/*
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* !!!
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* POSIX 1003.2 requires the environment to override everything.
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* Often, people can get nvi to stop messing up their screen by
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* deleting the LINES and COLUMNS environment variables from their
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* dot-files.
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*/
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if ((p = getenv("LINES")) != NULL)
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row = strtol(p, NULL, 10);
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if ((p = getenv("COLUMNS")) != NULL)
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col = strtol(p, NULL, 10);
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if (rowp != NULL)
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*rowp = row;
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if (colp != NULL)
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*colp = col;
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return (0);
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}
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/*
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* cl_putchar --
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* Function version of putchar, for tputs.
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*
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* PUBLIC: int cl_putchar __P((int));
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*/
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int
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cl_putchar(int ch)
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{
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return (putchar(ch));
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}
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