1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*-
* 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.
*/
#define PROMPTCHAR ':' /* Prompt using a colon. */
typedef struct _excmdlist { /* Ex command table structure. */
CHAR_T *name; /* Command name, underlying function. */
int (*fn)(SCR *, EXCMD *);
#define E_ADDR1 0x00000001 /* One address. */
#define E_ADDR2 0x00000002 /* Two addresses. */
#define E_ADDR2_ALL 0x00000004 /* Zero/two addresses; zero == all. */
#define E_ADDR2_NONE 0x00000008 /* Zero/two addresses; zero == none. */
#define E_ADDR_ZERO 0x00000010 /* 0 is a legal addr1. */
#define E_ADDR_ZERODEF 0x00000020 /* 0 is default addr1 of empty files. */
#define E_AUTOPRINT 0x00000040 /* Command always sets autoprint. */
#define E_CLRFLAG 0x00000080 /* Clear the print (#, l, p) flags. */
#define E_NEWSCREEN 0x00000100 /* Create a new screen. */
#define E_SECURE 0x00000200 /* Permission denied if O_SECURE set. */
#define E_VIONLY 0x00000400 /* Meaningful only in vi. */
#define __INUSE1 0xfffff800 /* Same name space as EX_PRIVATE. */
u_int16_t flags;
char *syntax; /* Syntax script. */
char *usage; /* Usage line. */
char *help; /* Help line. */
} EXCMDLIST;
#define MAXCMDNAMELEN 12 /* Longest command name. */
extern EXCMDLIST const cmds[]; /* Table of ex commands. */
/*
* !!!
* QUOTING NOTE:
*
* Historically, .exrc files and EXINIT variables could only use ^V as an
* escape character, neither ^Q or a user specified character worked. We
* enforce that here, just in case someone depends on it.
*/
#define IS_ESCAPE(sp, cmdp, ch) \
(F_ISSET(cmdp, E_VLITONLY) ? \
(ch) == CH_LITERAL : KEY_VAL(sp, ch) == K_VLNEXT)
#define IS_SHELLMETA(sp, ch) \
((ch) <= CHAR_MAX && strchr(O_STR(sp, O_SHELLMETA), ch) != NULL)
/*
* File state must be checked for each command -- any ex command may be entered
* at any time, and most of them won't work well if a file hasn't yet been read
* in. Historic vi generally took the easy way out and dropped core.
*/
#define NEEDFILE(sp, cmdp) do { \
if ((sp)->ep == NULL) { \
ex_wemsg(sp, (cmdp)->cmd->name, EXM_NOFILEYET); \
return (1); \
} \
} while (0)
/* Range structures for global and @ commands. */
typedef struct _range RANGE;
struct _range { /* Global command range. */
TAILQ_ENTRY(_range) q; /* Linked list of ranges. */
recno_t start, stop; /* Start/stop of the range. */
};
/* Ex command structure. */
struct _excmd {
SLIST_ENTRY(_excmd) q; /* Linked list of commands. */
char *if_name; /* Associated file. */
recno_t if_lno; /* Associated line number. */
/* Clear the structure for the ex parser. */
#define CLEAR_EX_PARSER(cmdp) \
memset(&((cmdp)->cp), 0, ((char *)&(cmdp)->flags - \
(char *)&((cmdp)->cp)) + sizeof((cmdp)->flags))
CHAR_T *cp; /* Current command text. */
size_t clen; /* Current command length. */
CHAR_T *save_cmd; /* Remaining command. */
size_t save_cmdlen; /* Remaining command length. */
EXCMDLIST const *cmd; /* Command: entry in command table. */
EXCMDLIST rcmd; /* Command: table entry/replacement. */
TAILQ_HEAD(_rh, _range) rq[1]; /* @/global range: linked list. */
recno_t range_lno; /* @/global range: set line number. */
CHAR_T *o_cp; /* Original @/global command. */
size_t o_clen; /* Original @/global command length. */
#define AGV_AT 0x01 /* @ buffer execution. */
#define AGV_AT_NORANGE 0x02 /* @ buffer execution without range. */
#define AGV_GLOBAL 0x04 /* global command. */
#define AGV_V 0x08 /* v command. */
#define AGV_ALL (AGV_AT | AGV_AT_NORANGE | AGV_GLOBAL | AGV_V)
u_int8_t agv_flags;
/* Clear the structure before each ex command. */
#define CLEAR_EX_CMD(cmdp) do { \
u_int32_t L__f = F_ISSET(cmdp, E_PRESERVE); \
memset(&((cmdp)->buffer), 0, ((char *)&(cmdp)->flags - \
(char *)&((cmdp)->buffer)) + sizeof((cmdp)->flags)); \
F_SET(cmdp, L__f); \
} while (0)
CHAR_T buffer; /* Command: named buffer. */
recno_t lineno; /* Command: line number. */
long count; /* Command: signed count. */
long flagoff; /* Command: signed flag offset. */
int addrcnt; /* Command: addresses (0, 1 or 2). */
MARK addr1; /* Command: 1st address. */
MARK addr2; /* Command: 2nd address. */
ARGS **argv; /* Command: array of arguments. */
int argc; /* Command: count of arguments. */
#define E_C_BUFFER 0x00001 /* Buffer name specified. */
#define E_C_CARAT 0x00002 /* ^ flag. */
#define E_C_COUNT 0x00004 /* Count specified. */
#define E_C_COUNT_NEG 0x00008 /* Count was signed negative. */
#define E_C_COUNT_POS 0x00010 /* Count was signed positive. */
#define E_C_DASH 0x00020 /* - flag. */
#define E_C_DOT 0x00040 /* . flag. */
#define E_C_EQUAL 0x00080 /* = flag. */
#define E_C_FORCE 0x00100 /* ! flag. */
#define E_C_HASH 0x00200 /* # flag. */
#define E_C_LIST 0x00400 /* l flag. */
#define E_C_PLUS 0x00800 /* + flag. */
#define E_C_PRINT 0x01000 /* p flag. */
u_int16_t iflags; /* User input information. */
#define __INUSE2 0x000007ff /* Same name space as EXCMDLIST. */
#define E_BLIGNORE 0x00000800 /* Ignore blank lines. */
#define E_NAMEDISCARD 0x00001000 /* Free/discard the name. */
#define E_NOAUTO 0x00002000 /* Don't do autoprint output. */
#define E_NOPRDEF 0x00004000 /* Don't print as default. */
#define E_NRSEP 0x00008000 /* Need to line adjust ex output. */
#define E_OPTNUM 0x00010000 /* Number edit option affected. */
#define E_VLITONLY 0x00020000 /* Use ^V quoting only. */
#define E_PRESERVE 0x0003f800 /* Bits to preserve across commands. */
#define E_ABSMARK 0x00040000 /* Set the absolute mark. */
#define E_ADDR_DEF 0x00080000 /* Default addresses used. */
#define E_DELTA 0x00100000 /* Search address with delta. */
#define E_MODIFY 0x00200000 /* File name expansion modified arg. */
#define E_MOVETOEND 0x00400000 /* Move to the end of the file first. */
#define E_NEWLINE 0x00800000 /* Found ending <newline>. */
#define E_SEARCH_WMSG 0x01000000 /* Display search-wrapped message. */
#define E_USELASTCMD 0x02000000 /* Use the last command. */
#define E_VISEARCH 0x04000000 /* It's really a vi search command. */
u_int32_t flags; /* Current flags. */
};
/* Ex private, per-screen memory. */
typedef struct _ex_private {
/* Tag file list. */
TAILQ_HEAD(_tagfh, _tagf) tagfq[1];
TAILQ_HEAD(_tqh, _tagq) tq[1]; /* Tag queue. */
SLIST_HEAD(_csch, _csc) cscq[1];/* Cscope connection list. */
CHAR_T *tag_last; /* Saved last tag string. */
CHAR_T *lastbcomm; /* Last bang command. */
ARGS **args; /* Command: argument list. */
int argscnt; /* Command: argument list count. */
int argsoff; /* Command: offset into arguments. */
u_int32_t fdef; /* Saved E_C_* default command flags. */
char *ibp; /* File line input buffer. */
size_t ibp_len; /* File line input buffer length. */
CONVWIN ibcw; /* File line input conversion buffer. */
/*
* Buffers for the ex output. The screen/vi support doesn't do any
* character buffering of any kind. We do it here so that we're not
* calling the screen output routines on every character.
*
* XXX
* Change to grow dynamically.
*/
char obp[1024]; /* Ex output buffer. */
size_t obp_len; /* Ex output buffer length. */
#define EXP_CSCINIT 0x01 /* Cscope initialized. */
u_int8_t flags;
} EX_PRIVATE;
#define EXP(sp) ((EX_PRIVATE *)((sp)->ex_private))
/*
* Filter actions:
*
* FILTER_BANG !: filter text through the utility.
* FILTER_RBANG !: read from the utility (without stdin).
* FILTER_READ read: read from the utility (with stdin).
* FILTER_WRITE write: write to the utility, display its output.
*/
enum filtertype { FILTER_BANG, FILTER_RBANG, FILTER_READ, FILTER_WRITE };
/* Ex common error messages. */
typedef enum {
EXM_EMPTYBUF, /* Empty buffer. */
EXM_FILECOUNT, /* Too many file names. */
EXM_NOCANON, /* No terminal interface. */
EXM_NOCANON_F, /* EXM_NOCANO: filter version. */
EXM_NOFILEYET, /* Illegal until a file read in. */
EXM_NOPREVBUF, /* No previous buffer specified. */
EXM_NOPREVRE, /* No previous RE specified. */
EXM_NOSUSPEND, /* No suspension. */
EXM_SECURE, /* Illegal if secure edit option set. */
EXM_SECURE_F, /* EXM_SECURE: filter version */
EXM_USAGE /* Standard usage message. */
} exm_t;
/* Ex address error types. */
enum badaddr { A_COMBO, A_EMPTY, A_EOF, A_NOTSET, A_ZERO };
/* Ex common tag error messages. */
typedef enum {
TAG_BADLNO, /* Tag line doesn't exist. */
TAG_EMPTY, /* Tags stack is empty. */
TAG_SEARCH /* Tags search pattern wasn't found. */
} tagmsg_t;
#include "ex_def.h"
#include "extern.h"
|
