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Diffstat (limited to 'usr.bin/vi/ex/ex_visual.c')
| -rw-r--r-- | usr.bin/vi/ex/ex_visual.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/usr.bin/vi/ex/ex_visual.c b/usr.bin/vi/ex/ex_visual.c new file mode 100644 index 000000000000..66ffb2ba0b7f --- /dev/null +++ b/usr.bin/vi/ex/ex_visual.c @@ -0,0 +1,132 @@ +/*- + * Copyright (c) 1992, 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[] = "@(#)ex_visual.c 8.8 (Berkeley) 3/8/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <termios.h> + +#include <db.h> +#include <regex.h> + +#include "vi.h" +#include "excmd.h" + +/* + * ex_visual -- :[line] vi[sual] [^-.+] [window_size] [flags] + * + * Switch to visual mode. + */ +int +ex_visual(sp, ep, cmdp) + SCR *sp; + EXF *ep; + EXCMDARG *cmdp; +{ + size_t len; + int pos; + char buf[256]; + + /* If open option off, disallow visual command. */ + if (!O_ISSET(sp, O_OPEN)) { + msgq(sp, M_ERR, + "The visual command requires that the open option be set."); + return (1); + } + + /* If a line specified, move to that line. */ + if (cmdp->addrcnt) + sp->lno = cmdp->addr1.lno; + + /* + * Push a command based on the line position flags. If no + * flag specified, the line goes at the top of the screen. + */ + switch (F_ISSET(cmdp, E_F_CARAT | E_F_DASH | E_F_DOT | E_F_PLUS)) { + case E_F_CARAT: + pos = '^'; + break; + case E_F_DASH: + pos = '-'; + break; + case E_F_DOT: + pos = '.'; + break; + case E_F_PLUS: + default: + pos = '+'; + break; + } + + if (F_ISSET(cmdp, E_COUNT)) + len = snprintf(buf, sizeof(buf), + "%luz%c%lu", sp->lno, pos, cmdp->count); + else + len = snprintf(buf, sizeof(buf), "%luz%c", sp->lno, pos); + (void)term_push(sp, buf, len, 0, CH_NOMAP | CH_QUOTED); + + /* + * !!! + * Historically, if no line address was specified, the [p#l] flags + * caused the cursor to be moved to the last line of the file, which + * was then positioned as described above. This seems useless, so + * I haven't implemented it. + */ + switch (F_ISSET(cmdp, E_F_HASH | E_F_LIST | E_F_PRINT)) { + case E_F_HASH: + O_SET(sp, O_NUMBER); + break; + case E_F_LIST: + O_SET(sp, O_LIST); + break; + case E_F_PRINT: + break; + } + + /* Switch modes. */ + F_CLR(sp, S_SCREENS); + F_SET(sp, sp->saved_vi_mode); + + return (0); +} |