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author | peter <peter@FreeBSD.org> | 1996-11-01 06:45:43 +0000 |
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committer | peter <peter@FreeBSD.org> | 1996-11-01 06:45:43 +0000 |
commit | 59cc89c2c2e686da3bdab2d5cfac4f33462d29fe (patch) | |
tree | 88f923c9c0be2e2a225a9b21716fd582de668b42 /contrib/nvi/ex/ex_abbrev.c | |
download | FreeBSD-src-59cc89c2c2e686da3bdab2d5cfac4f33462d29fe.zip FreeBSD-src-59cc89c2c2e686da3bdab2d5cfac4f33462d29fe.tar.gz |
Import of nvi-1.79, minus a few bits that we dont need (eg: postscript
files, curses, db, regex etc that we already have). The other glue will
follow shortly.
Obtained from: Keith Bostic <bostic@bostic.com>
Diffstat (limited to 'contrib/nvi/ex/ex_abbrev.c')
-rw-r--r-- | contrib/nvi/ex/ex_abbrev.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/contrib/nvi/ex/ex_abbrev.c b/contrib/nvi/ex/ex_abbrev.c new file mode 100644 index 0000000..231098c --- /dev/null +++ b/contrib/nvi/ex/ex_abbrev.c @@ -0,0 +1,117 @@ +/*- + * 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[] = "@(#)ex_abbrev.c 10.7 (Berkeley) 3/6/96"; +#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 "../common/common.h" +#include "../vi/vi.h" + +/* + * ex_abbr -- :abbreviate [key replacement] + * Create an abbreviation or display abbreviations. + * + * PUBLIC: int ex_abbr __P((SCR *, EXCMD *)); + */ +int +ex_abbr(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + CHAR_T *p; + size_t len; + + switch (cmdp->argc) { + case 0: + if (seq_dump(sp, SEQ_ABBREV, 0) == 0) + msgq(sp, M_INFO, "105|No abbreviations to display"); + return (0); + case 2: + break; + default: + abort(); + } + + /* + * Check for illegal characters. + * + * !!! + * Another fun one, historically. See vi/v_ntext.c:txt_abbrev() for + * details. The bottom line is that all abbreviations have to end + * with a "word" character, because it's the transition from word to + * non-word characters that triggers the test for an abbreviation. In + * addition, because of the way the test is done, there can't be any + * transitions from word to non-word character (or vice-versa) other + * than between the next-to-last and last characters of the string, + * and there can't be any <blank> characters. Warn the user. + */ + if (!inword(cmdp->argv[0]->bp[cmdp->argv[0]->len - 1])) { + msgq(sp, M_ERR, + "106|Abbreviations must end with a \"word\" character"); + return (1); + } + for (p = cmdp->argv[0]->bp; *p != '\0'; ++p) + if (isblank(p[0])) { + msgq(sp, M_ERR, + "107|Abbreviations may not contain tabs or spaces"); + return (1); + } + if (cmdp->argv[0]->len > 2) + for (p = cmdp->argv[0]->bp, + len = cmdp->argv[0]->len - 2; len; --len, ++p) + if (inword(p[0]) != inword(p[1])) { + msgq(sp, M_ERR, +"108|Abbreviations may not mix word/non-word characters, except at the end"); + return (1); + } + + if (seq_set(sp, NULL, 0, cmdp->argv[0]->bp, cmdp->argv[0]->len, + cmdp->argv[1]->bp, cmdp->argv[1]->len, SEQ_ABBREV, SEQ_USERDEF)) + return (1); + + F_SET(sp->gp, G_ABBREV); + return (0); +} + +/* + * ex_unabbr -- :unabbreviate key + * Delete an abbreviation. + * + * PUBLIC: int ex_unabbr __P((SCR *, EXCMD *)); + */ +int +ex_unabbr(sp, cmdp) + SCR *sp; + EXCMD *cmdp; +{ + ARGS *ap; + + ap = cmdp->argv[0]; + if (!F_ISSET(sp->gp, G_ABBREV) || + seq_delete(sp, ap->bp, ap->len, SEQ_ABBREV)) { + msgq_str(sp, M_ERR, ap->bp, + "109|\"%s\" is not an abbreviation"); + return (1); + } + return (0); +} |