203 lines
4.5 KiB
C
203 lines
4.5 KiB
C
/*-
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* Copyright (c) 1992, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)ex_init.c 8.18 (Berkeley) 8/17/94";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/time.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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#include <termios.h>
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#include "compat.h"
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#include <db.h>
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#include <regex.h>
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#include "vi.h"
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#include "excmd.h"
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#include "tag.h"
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/*
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* ex_screen_copy --
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* Copy ex screen.
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*/
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int
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ex_screen_copy(orig, sp)
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SCR *orig, *sp;
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{
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EX_PRIVATE *oexp, *nexp;
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/* Create the private ex structure. */
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CALLOC_RET(orig, nexp, EX_PRIVATE *, 1, sizeof(EX_PRIVATE));
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sp->ex_private = nexp;
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/* Initialize queues. */
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TAILQ_INIT(&nexp->tagq);
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TAILQ_INIT(&nexp->tagfq);
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TAILQ_INIT(&nexp->cdq);
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CIRCLEQ_INIT(&nexp->rangeq);
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if (orig == NULL) {
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nexp->at_lbuf_set = 0;
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} else {
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oexp = EXP(orig);
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nexp->at_lbuf = oexp->at_lbuf;
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nexp->at_lbuf_set = oexp->at_lbuf_set;
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if (oexp->lastbcomm != NULL &&
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(nexp->lastbcomm = strdup(oexp->lastbcomm)) == NULL) {
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msgq(sp, M_SYSERR, NULL);
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return(1);
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}
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if (ex_tagcopy(orig, sp))
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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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* ex_screen_end --
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* End a vi screen.
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*/
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int
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ex_screen_end(sp)
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SCR *sp;
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{
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EX_PRIVATE *exp;
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int rval;
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rval = 0;
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exp = EXP(sp);
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if (argv_free(sp))
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rval = 1;
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if (exp->ibp != NULL)
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FREE(exp->ibp, exp->ibp_len);
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if (exp->lastbcomm != NULL)
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FREE(exp->lastbcomm, strlen(exp->lastbcomm) + 1);
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if (ex_tagfree(sp))
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rval = 1;
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if (ex_cdfree(sp))
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rval = 1;
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/* Free private memory. */
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FREE(exp, sizeof(EX_PRIVATE));
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sp->ex_private = NULL;
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return (rval);
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}
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/*
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* ex_init --
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* Initialize ex.
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*/
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int
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ex_init(sp, ep)
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SCR *sp;
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EXF *ep;
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{
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size_t len;
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/*
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* The default address is the last line of the file. If the address
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* set bit is on for this file, load the address, ensuring that it
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* exists.
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*/
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if (F_ISSET(sp->frp, FR_CURSORSET)) {
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sp->lno = sp->frp->lno;
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sp->cno = sp->frp->cno;
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if (file_gline(sp, ep, sp->lno, &len) == NULL) {
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if (file_lline(sp, ep, &sp->lno))
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return (1);
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if (sp->lno == 0)
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sp->lno = 1;
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sp->cno = 0;
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} else if (sp->cno >= len)
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sp->cno = 0;
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} else {
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if (file_lline(sp, ep, &sp->lno))
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return (1);
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if (sp->lno == 0)
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sp->lno = 1;
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sp->cno = 0;
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}
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/* Display the status line. */
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return (msg_status(sp, ep, sp->lno, 0));
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}
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/*
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* ex_end --
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* End ex session.
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*/
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int
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ex_end(sp)
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SCR *sp;
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{
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return (0);
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}
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/*
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* ex_optchange --
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* Handle change of options for vi.
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*/
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int
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ex_optchange(sp, opt)
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SCR *sp;
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int opt;
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{
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switch (opt) {
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case O_CDPATH:
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return (ex_cdalloc(sp, O_STR(sp, O_CDPATH)));
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case O_TAGS:
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return (ex_tagalloc(sp, O_STR(sp, O_TAGS)));
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}
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return (0);
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}
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