diff options
Diffstat (limited to 'contrib/nvi/vi/v_util.c')
| -rw-r--r-- | contrib/nvi/vi/v_util.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/contrib/nvi/vi/v_util.c b/contrib/nvi/vi/v_util.c new file mode 100644 index 0000000..c4c0daa --- /dev/null +++ b/contrib/nvi/vi/v_util.c @@ -0,0 +1,180 @@ +/*- + * Copyright (c) 1992, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * Copyright (c) 1992, 1993, 1994, 1995, 1996 + * Keith Bostic. All rights reserved. + * + * See the LICENSE file for redistribution information. + */ + +#include "config.h" + +#ifndef lint +static const char sccsid[] = "@(#)v_util.c 10.11 (Berkeley) 6/30/96"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/queue.h> +#include <sys/time.h> + +#include <bitstring.h> +#include <ctype.h> +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "../common/common.h" +#include "vi.h" + +/* + * v_eof -- + * Vi end-of-file error. + * + * PUBLIC: void v_eof __P((SCR *, MARK *)); + */ +void +v_eof(sp, mp) + SCR *sp; + MARK *mp; +{ + recno_t lno; + + if (mp == NULL) + v_emsg(sp, NULL, VIM_EOF); + else { + if (db_last(sp, &lno)) + return; + if (mp->lno >= lno) + v_emsg(sp, NULL, VIM_EOF); + else + msgq(sp, M_BERR, "195|Movement past the end-of-file"); + } +} + +/* + * v_eol -- + * Vi end-of-line error. + * + * PUBLIC: void v_eol __P((SCR *, MARK *)); + */ +void +v_eol(sp, mp) + SCR *sp; + MARK *mp; +{ + size_t len; + + if (mp == NULL) + v_emsg(sp, NULL, VIM_EOL); + else { + if (db_get(sp, mp->lno, DBG_FATAL, NULL, &len)) + return; + if (mp->cno == len - 1) + v_emsg(sp, NULL, VIM_EOL); + else + msgq(sp, M_BERR, "196|Movement past the end-of-line"); + } +} + +/* + * v_nomove -- + * Vi no cursor movement error. + * + * PUBLIC: void v_nomove __P((SCR *)); + */ +void +v_nomove(sp) + SCR *sp; +{ + msgq(sp, M_BERR, "197|No cursor movement made"); +} + +/* + * v_sof -- + * Vi start-of-file error. + * + * PUBLIC: void v_sof __P((SCR *, MARK *)); + */ +void +v_sof(sp, mp) + SCR *sp; + MARK *mp; +{ + if (mp == NULL || mp->lno == 1) + msgq(sp, M_BERR, "198|Already at the beginning of the file"); + else + msgq(sp, M_BERR, "199|Movement past the beginning of the file"); +} + +/* + * v_sol -- + * Vi start-of-line error. + * + * PUBLIC: void v_sol __P((SCR *)); + */ +void +v_sol(sp) + SCR *sp; +{ + msgq(sp, M_BERR, "200|Already in the first column"); +} + +/* + * v_isempty -- + * Return if the line contains nothing but white-space characters. + * + * PUBLIC: int v_isempty __P((char *, size_t)); + */ +int +v_isempty(p, len) + char *p; + size_t len; +{ + for (; len--; ++p) + if (!isblank(*p)) + return (0); + return (1); +} + +/* + * v_emsg -- + * Display a few common vi messages. + * + * PUBLIC: void v_emsg __P((SCR *, char *, vim_t)); + */ +void +v_emsg(sp, p, which) + SCR *sp; + char *p; + vim_t which; +{ + switch (which) { + case VIM_COMBUF: + msgq(sp, M_ERR, + "201|Buffers should be specified before the command"); + break; + case VIM_EMPTY: + msgq(sp, M_BERR, "209|The file is empty"); + break; + case VIM_EOF: + msgq(sp, M_BERR, "202|Already at end-of-file"); + break; + case VIM_EOL: + msgq(sp, M_BERR, "203|Already at end-of-line"); + break; + case VIM_NOCOM: + case VIM_NOCOM_B: + msgq(sp, + which == VIM_NOCOM_B ? M_BERR : M_ERR, + "204|%s isn't a vi command", p); + break; + case VIM_WRESIZE: + msgq(sp, M_ERR, "Window resize interrupted text input mode"); + break; + case VIM_USAGE: + msgq(sp, M_ERR, "205|Usage: %s", p); + break; + } +} |
