1 /*-
2 * Copyright (c) 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1992, 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
6 *
7 * See the LICENSE file for redistribution information.
8 */
9
10 #include "config.h"
11
12 #include <sys/types.h>
13 #include <sys/queue.h>
14 #include <sys/time.h>
15
16 #include <bitstring.h>
17 #include <ctype.h>
18 #include <limits.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22
23 #include "../common/common.h"
24 #include "../vi/vi.h"
25
26 /*
27 * ex_abbr -- :abbreviate [key replacement]
28 * Create an abbreviation or display abbreviations.
29 *
30 * PUBLIC: int ex_abbr(SCR *, EXCMD *);
31 */
32 int
ex_abbr(SCR * sp,EXCMD * cmdp)33 ex_abbr(SCR *sp, EXCMD *cmdp)
34 {
35 CHAR_T *p;
36 size_t len;
37
38 switch (cmdp->argc) {
39 case 0:
40 if (seq_dump(sp, SEQ_ABBREV, 0) == 0)
41 msgq(sp, M_INFO, "105|No abbreviations to display");
42 return (0);
43 case 2:
44 break;
45 default:
46 abort();
47 }
48
49 /*
50 * Check for illegal characters.
51 *
52 * !!!
53 * Another fun one, historically. See vi/v_ntext.c:txt_abbrev() for
54 * details. The bottom line is that all abbreviations have to end
55 * with a "word" character, because it's the transition from word to
56 * non-word characters that triggers the test for an abbreviation. In
57 * addition, because of the way the test is done, there can't be any
58 * transitions from word to non-word character (or vice-versa) other
59 * than between the next-to-last and last characters of the string,
60 * and there can't be any <blank> characters. Warn the user.
61 */
62 if (!inword(cmdp->argv[0]->bp[cmdp->argv[0]->len - 1])) {
63 msgq(sp, M_ERR,
64 "106|Abbreviations must end with a \"word\" character");
65 return (1);
66 }
67 for (p = cmdp->argv[0]->bp; *p != '\0'; ++p)
68 if (ISBLANK(p[0])) {
69 msgq(sp, M_ERR,
70 "107|Abbreviations may not contain tabs or spaces");
71 return (1);
72 }
73 if (cmdp->argv[0]->len > 2)
74 for (p = cmdp->argv[0]->bp,
75 len = cmdp->argv[0]->len - 2; len; --len, ++p)
76 if (inword(p[0]) != inword(p[1])) {
77 msgq(sp, M_ERR,
78 "108|Abbreviations may not mix word/non-word characters, except at the end");
79 return (1);
80 }
81
82 if (seq_set(sp, NULL, 0, cmdp->argv[0]->bp, cmdp->argv[0]->len,
83 cmdp->argv[1]->bp, cmdp->argv[1]->len, SEQ_ABBREV, SEQ_USERDEF))
84 return (1);
85
86 F_SET(sp->gp, G_ABBREV);
87 return (0);
88 }
89
90 /*
91 * ex_unabbr -- :unabbreviate key
92 * Delete an abbreviation.
93 *
94 * PUBLIC: int ex_unabbr(SCR *, EXCMD *);
95 */
96 int
ex_unabbr(SCR * sp,EXCMD * cmdp)97 ex_unabbr(SCR *sp, EXCMD *cmdp)
98 {
99 ARGS *ap;
100
101 ap = cmdp->argv[0];
102 if (!F_ISSET(sp->gp, G_ABBREV) ||
103 seq_delete(sp, ap->bp, ap->len, SEQ_ABBREV)) {
104 msgq_wstr(sp, M_ERR, ap->bp,
105 "109|\"%s\" is not an abbreviation");
106 return (1);
107 }
108 return (0);
109 }
110