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Diffstat (limited to 'usr.bin/vi/vi/v_util.c')
| -rw-r--r-- | usr.bin/vi/vi/v_util.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/usr.bin/vi/vi/v_util.c b/usr.bin/vi/vi/v_util.c new file mode 100644 index 000000000000..8959b5618af6 --- /dev/null +++ b/usr.bin/vi/vi/v_util.c @@ -0,0 +1,159 @@ +/*- + * 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[] = "@(#)v_util.c 8.8 (Berkeley) 3/14/94"; +#endif /* not lint */ + +#include <sys/types.h> +#include <queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <ctype.h> +#include <limits.h> +#include <signal.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <termios.h> +#include <unistd.h> + +#include <db.h> +#include <regex.h> + +#include "vi.h" +#include "vcmd.h" + +/* + * v_eof -- + * Vi end-of-file error. + */ +void +v_eof(sp, ep, mp) + SCR *sp; + EXF *ep; + MARK *mp; +{ + u_long lno; + + if (mp == NULL) + msgq(sp, M_BERR, "Already at end-of-file."); + else { + if (file_lline(sp, ep, &lno)) + return; + if (mp->lno >= lno) + msgq(sp, M_BERR, "Already at end-of-file."); + else + msgq(sp, M_BERR, + "Movement past the end-of-file."); + } +} + +/* + * v_eol -- + * Vi end-of-line error. + */ +void +v_eol(sp, ep, mp) + SCR *sp; + EXF *ep; + MARK *mp; +{ + size_t len; + + if (mp == NULL) + msgq(sp, M_BERR, "Already at end-of-line."); + else { + if (file_gline(sp, ep, mp->lno, &len) == NULL) { + GETLINE_ERR(sp, mp->lno); + return; + } + if (mp->cno == len - 1) + msgq(sp, M_BERR, "Already at end-of-line."); + else + msgq(sp, M_BERR, "Movement past the end-of-line."); + } +} + +/* + * v_nomove -- + * Vi no cursor movement error. + */ +void +v_nomove(sp) + SCR *sp; +{ + msgq(sp, M_BERR, "No cursor movement made."); +} + +/* + * v_sof -- + * Vi start-of-file error. + */ +void +v_sof(sp, mp) + SCR *sp; + MARK *mp; +{ + if (mp == NULL || mp->lno == 1) + msgq(sp, M_BERR, "Already at the beginning of the file."); + else + msgq(sp, M_BERR, "Movement past the beginning of the file."); +} + +/* + * v_sol -- + * Vi start-of-line error. + */ +void +v_sol(sp) + SCR *sp; +{ + msgq(sp, M_BERR, "Already in the first column."); +} + +/* + * v_isempty -- + * Return if the line contains nothing but white-space characters. + */ +int +v_isempty(p, len) + char *p; + size_t len; +{ + for (; len--; ++p) + if (!isblank(*p)) + return (0); + return (1); +} |