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 #include <unistd.h>
23
24 #include "../common/common.h"
25 #include "vi.h"
26
27 /*
28 * v_eof --
29 * Vi end-of-file error.
30 *
31 * PUBLIC: void v_eof(SCR *, MARK *);
32 */
33 void
v_eof(SCR * sp,MARK * mp)34 v_eof(SCR *sp, MARK *mp)
35 {
36 recno_t lno;
37
38 if (mp == NULL)
39 v_emsg(sp, NULL, VIM_EOF);
40 else {
41 if (db_last(sp, &lno))
42 return;
43 if (mp->lno >= lno)
44 v_emsg(sp, NULL, VIM_EOF);
45 else
46 msgq(sp, M_BERR, "195|Movement past the end-of-file");
47 }
48 }
49
50 /*
51 * v_eol --
52 * Vi end-of-line error.
53 *
54 * PUBLIC: void v_eol(SCR *, MARK *);
55 */
56 void
v_eol(SCR * sp,MARK * mp)57 v_eol(SCR *sp, MARK *mp)
58 {
59 size_t len;
60
61 if (mp == NULL)
62 v_emsg(sp, NULL, VIM_EOL);
63 else {
64 if (db_get(sp, mp->lno, DBG_FATAL, NULL, &len))
65 return;
66 if (mp->cno == len - 1)
67 v_emsg(sp, NULL, VIM_EOL);
68 else
69 msgq(sp, M_BERR, "196|Movement past the end-of-line");
70 }
71 }
72
73 /*
74 * v_nomove --
75 * Vi no cursor movement error.
76 *
77 * PUBLIC: void v_nomove(SCR *);
78 */
79 void
v_nomove(SCR * sp)80 v_nomove(SCR *sp)
81 {
82 msgq(sp, M_BERR, "197|No cursor movement made");
83 }
84
85 /*
86 * v_sof --
87 * Vi start-of-file error.
88 *
89 * PUBLIC: void v_sof(SCR *, MARK *);
90 */
91 void
v_sof(SCR * sp,MARK * mp)92 v_sof(SCR *sp, MARK *mp)
93 {
94 if (mp == NULL || mp->lno == 1)
95 msgq(sp, M_BERR, "198|Already at the beginning of the file");
96 else
97 msgq(sp, M_BERR, "199|Movement past the beginning of the file");
98 }
99
100 /*
101 * v_sol --
102 * Vi start-of-line error.
103 *
104 * PUBLIC: void v_sol(SCR *);
105 */
106 void
v_sol(SCR * sp)107 v_sol(SCR *sp)
108 {
109 msgq(sp, M_BERR, "200|Already in the first column");
110 }
111
112 /*
113 * v_isempty --
114 * Return if the line contains nothing but white-space characters.
115 *
116 * PUBLIC: int v_isempty(CHAR_T *, size_t);
117 */
118 int
v_isempty(CHAR_T * p,size_t len)119 v_isempty(CHAR_T *p, size_t len)
120 {
121 for (; len--; ++p)
122 if (!isblank(*p))
123 return (0);
124 return (1);
125 }
126
127 /*
128 * v_emsg --
129 * Display a few common vi messages.
130 *
131 * PUBLIC: void v_emsg(SCR *, char *, vim_t);
132 */
133 void
v_emsg(SCR * sp,char * p,vim_t which)134 v_emsg(SCR *sp, char *p, vim_t which)
135 {
136 switch (which) {
137 case VIM_COMBUF:
138 msgq(sp, M_ERR,
139 "201|Buffers should be specified before the command");
140 break;
141 case VIM_EMPTY:
142 msgq(sp, M_BERR, "209|The file is empty");
143 break;
144 case VIM_EOF:
145 msgq(sp, M_BERR, "202|Already at end-of-file");
146 break;
147 case VIM_EOL:
148 msgq(sp, M_BERR, "203|Already at end-of-line");
149 break;
150 case VIM_NOCOM:
151 case VIM_NOCOM_B:
152 msgq(sp,
153 which == VIM_NOCOM_B ? M_BERR : M_ERR,
154 "204|%s isn't a vi command", p);
155 break;
156 case VIM_WRESIZE:
157 msgq(sp, M_ERR, "Window resize interrupted text input mode");
158 break;
159 case VIM_USAGE:
160 msgq(sp, M_ERR, "205|Usage: %s", p);
161 break;
162 }
163 }
164