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138 lines
3.9 KiB
C
138 lines
3.9 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 const char sccsid[] = "@(#)ex_visual.c 8.14 (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 <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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/*
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* ex_visual -- :[line] vi[sual] [^-.+] [window_size] [flags]
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*
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* Switch to visual mode.
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*/
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int
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ex_visual(sp, ep, cmdp)
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SCR *sp;
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EXF *ep;
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EXCMDARG *cmdp;
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{
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size_t len;
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int pos;
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char buf[256];
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/* If open option off, disallow visual command. */
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if (!O_ISSET(sp, O_OPEN)) {
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msgq(sp, M_ERR,
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"The visual command requires that the open option be set");
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return (1);
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}
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/* If a line specified, move to that line. */
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if (cmdp->addrcnt)
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sp->lno = cmdp->addr1.lno;
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/*
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* Push a command based on the line position flags. If no
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* flag specified, the line goes at the top of the screen.
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*/
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switch (F_ISSET(cmdp, E_F_CARAT | E_F_DASH | E_F_DOT | E_F_PLUS)) {
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case E_F_CARAT:
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pos = '^';
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break;
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case E_F_DASH:
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pos = '-';
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break;
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case E_F_DOT:
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pos = '.';
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break;
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case E_F_PLUS:
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pos = '+';
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break;
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default:
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sp->frp->lno = sp->lno;
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sp->frp->cno = 0;
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F_SET(sp->frp, FR_CURSORSET | FR_FNONBLANK);
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goto nopush;
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}
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if (F_ISSET(cmdp, E_COUNT))
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len = snprintf(buf, sizeof(buf),
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"%luz%c%lu", sp->lno, pos, cmdp->count);
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else
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len = snprintf(buf, sizeof(buf), "%luz%c", sp->lno, pos);
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(void)term_push(sp, buf, len, CH_NOMAP | CH_QUOTED);
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/*
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* !!!
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* Historically, if no line address was specified, the [p#l] flags
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* caused the cursor to be moved to the last line of the file, which
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* was then positioned as described above. This seems useless, so
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* I haven't implemented it.
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*/
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switch (F_ISSET(cmdp, E_F_HASH | E_F_LIST | E_F_PRINT)) {
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case E_F_HASH:
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O_SET(sp, O_NUMBER);
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break;
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case E_F_LIST:
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O_SET(sp, O_LIST);
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break;
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case E_F_PRINT:
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break;
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}
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/* Switch modes. */
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nopush: F_CLR(sp, S_SCREENS);
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F_SET(sp, sp->saved_vi_mode);
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return (0);
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}
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