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NetBSD/usr.bin/vi/screen.c

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/*-
* Copyright (c) 1993
* 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
/* from: static char sccsid[] = "@(#)screen.c 8.51 (Berkeley) 1/11/94"; */
static char *rcsid = "$Id: screen.c,v 1.2 1994/01/24 06:39:10 cgd Exp $";
#endif /* not lint */
#include <sys/types.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "vi.h"
#include "vcmd.h"
#include "excmd.h"
#include "tag.h"
/*
* screen_init --
* Do the default initialization of an SCR structure.
*/
int
screen_init(orig, spp, flags)
SCR *orig, **spp;
u_int flags;
{
SCR *sp;
size_t len;
*spp = NULL;
CALLOC_RET(orig, sp, SCR *, 1, sizeof(SCR));
*spp = sp;
/* INITIALIZED AT SCREEN CREATE. */
sp->gp = __global_list; /* All ref the GS structure. */
LIST_INIT(&sp->msgq);
CIRCLEQ_INIT(&sp->frefq);
sp->ccnt = 2; /* Anything > 1 */
FD_ZERO(&sp->rdfd);
CIRCLEQ_INIT(&sp->tiq);
/* PARTIALLY OR COMPLETELY COPIED FROM PREVIOUS SCREEN. */
if (orig == NULL) {
sp->searchdir = NOTSET;
sp->csearchdir = CNOTSET;
switch (flags & S_SCREENS) {
case S_EX:
if (sex_screen_init(sp))
return (1);
break;
case S_VI_CURSES:
if (svi_screen_init(sp))
return (1);
break;
case S_VI_XAW:
if (xaw_screen_init(sp))
return (1);
break;
default:
abort();
}
sp->flags = flags;
} else {
if (orig->alt_name != NULL &&
(sp->alt_name = strdup(orig->alt_name)) == NULL)
goto mem;
/* Retain all searching/substitution information. */
if (F_ISSET(orig, S_SRE_SET)) {
F_SET(sp, S_SRE_SET);
sp->sre = orig->sre;
}
if (F_ISSET(orig, S_SUBRE_SET)) {
F_SET(sp, S_SUBRE_SET);
sp->subre = orig->subre;
}
sp->searchdir = orig->searchdir == NOTSET ? NOTSET : FORWARD;
sp->csearchdir = CNOTSET;
sp->lastckey = orig->lastckey;
if (orig->matchsize) {
len = orig->matchsize * sizeof(regmatch_t);
MALLOC(sp, sp->match, regmatch_t *, len);
if (sp->match == NULL)
goto mem;
sp->matchsize = orig->matchsize;
memmove(sp->match, orig->match, len);
}
if (orig->repl_len) {
MALLOC(sp, sp->repl, char *, orig->repl_len);
if (sp->repl == NULL)
goto mem;
sp->repl_len = orig->repl_len;
memmove(sp->repl, orig->repl, orig->repl_len);
}
if (orig->newl_len) {
len = orig->newl_len * sizeof(size_t);
MALLOC(sp, sp->newl, size_t *, len);
if (sp->newl == NULL)
goto mem;
sp->newl_len = orig->newl_len;
sp->newl_cnt = orig->newl_cnt;
memmove(sp->newl, orig->newl, len);
}
sp->saved_vi_mode = orig->saved_vi_mode;
if (opts_copy(orig, sp)) {
mem: msgq(orig, M_SYSERR, "new screen attributes");
(void)screen_end(sp);
return (1);
}
sp->s_bell = orig->s_bell;
sp->s_bg = orig->s_bg;
sp->s_busy = orig->s_busy;
sp->s_change = orig->s_change;
sp->s_chposition = orig->s_chposition;
sp->s_clear = orig->s_clear;
sp->s_column = orig->s_column;
sp->s_confirm = orig->s_confirm;
sp->s_down = orig->s_down;
sp->s_edit = orig->s_edit;
sp->s_end = orig->s_end;
sp->s_ex_cmd = orig->s_ex_cmd;
sp->s_ex_run = orig->s_ex_run;
sp->s_ex_write = orig->s_ex_write;
sp->s_fg = orig->s_fg;
sp->s_fill = orig->s_fill;
sp->s_get = orig->s_get;
sp->s_key_read = orig->s_key_read;
sp->s_optchange = orig->s_optchange;
sp->s_position = orig->s_position;
sp->s_rabs = orig->s_rabs;
sp->s_refresh = orig->s_refresh;
sp->s_relative = orig->s_relative;
sp->s_rrel = orig->s_rrel;
sp->s_split = orig->s_split;
sp->s_suspend = orig->s_suspend;
sp->s_up = orig->s_up;
F_SET(sp, F_ISSET(orig, S_SCREENS));
}
if (xaw_screen_copy(orig, sp)) /* Init S_VI_XAW screen. */
return (1);
if (svi_screen_copy(orig, sp)) /* Init S_VI_CURSES screen. */
return (1);
if (sex_screen_copy(orig, sp)) /* Init S_EX screen. */
return (1);
if (v_screen_copy(orig, sp)) /* Init vi. */
return (1);
if (ex_screen_copy(orig, sp)) /* Init ex. */
return (1);
*spp = sp;
return (0);
}
/*
* screen_end --
* Release a screen.
*/
int
screen_end(sp)
SCR *sp;
{
int rval;
rval = 0;
if (xaw_screen_end(sp)) /* End S_VI_XAW screen. */
rval = 1;
if (svi_screen_end(sp)) /* End S_VI_CURSES screen. */
rval = 1;
if (sex_screen_end(sp)) /* End S_EX screen. */
rval = 1;
if (v_screen_end(sp)) /* End vi. */
rval = 1;
if (ex_screen_end(sp)) /* End ex. */
rval = 1;
/* Free FREF's. */
{ FREF *frp;
while ((frp = sp->frefq.cqh_first) != (FREF *)&sp->frefq) {
CIRCLEQ_REMOVE(&sp->frefq, frp, q);
if (frp->cname != NULL)
free(frp->cname);
if (frp->name != NULL)
free(frp->name);
if (frp->tname != NULL)
free(frp->tname);
FREE(frp, sizeof(FREF));
}
}
/* Free any text input. */
text_lfree(&sp->tiq);
/* Free any script information. */
if (F_ISSET(sp, S_SCRIPT))
sscr_end(sp);
/* Free alternate file name. */
if (sp->alt_name != NULL)
FREE(sp->alt_name, strlen(sp->alt_name) + 1);
/* Free up search information. */
if (sp->match != NULL)
FREE(sp->match, sizeof(regmatch_t));
if (sp->repl != NULL)
FREE(sp->repl, sp->repl_len);
if (sp->newl != NULL)
FREE(sp->newl, sp->newl_len);
/* Free all the options */
opts_free(sp);
/*
* Free the message chain last, so previous failures have a place
* to put messages. Copy messages to (in order) a related screen,
* any screen, the global area.
*/
{ SCR *c_sp; MSG *mp, *next;
if ((c_sp = sp->q.cqe_prev) != (void *)&sp->gp->dq) {
if (F_ISSET(sp, S_BELLSCHED))
F_SET(c_sp, S_BELLSCHED);
} else if ((c_sp = sp->q.cqe_next) != (void *)&sp->gp->dq) {
if (F_ISSET(sp, S_BELLSCHED))
F_SET(c_sp, S_BELLSCHED);
} else if ((c_sp =
sp->gp->hq.cqh_first) != (void *)&sp->gp->hq) {
if (F_ISSET(sp, S_BELLSCHED))
F_SET(c_sp, S_BELLSCHED);
} else {
c_sp = NULL;
if (F_ISSET(sp, S_BELLSCHED))
F_SET(sp->gp, G_BELLSCHED);
}
for (mp = sp->msgq.lh_first; mp != NULL; mp = next) {
if (!F_ISSET(mp, M_EMPTY))
msg_app(sp->gp, c_sp,
mp->flags & M_INV_VIDEO, mp->mbuf, mp->len);
next = mp->q.le_next;
if (mp->mbuf != NULL)
FREE(mp->mbuf, mp->blen);
FREE(mp, sizeof(MSG));
}
}
/* Remove the screen from the displayed queue. */
CIRCLEQ_REMOVE(&sp->gp->dq, sp, q);
/* Free the screen itself. */
FREE(sp, sizeof(SCR));
return (rval);
}
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