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
|
/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*
* @(#)gs.h 10.33 (Berkeley) 7/12/96
*/
#define TEMPORARY_FILE_STRING "/tmp" /* Default temporary file name. */
/*
* File reference structure (FREF). The structure contains the name of the
* file, along with the information that follows the name.
*
* !!!
* The read-only bit follows the file name, not the file itself.
*/
struct _fref {
CIRCLEQ_ENTRY(_fref) q; /* Linked list of file references. */
char *name; /* File name. */
char *tname; /* Backing temporary file name. */
recno_t lno; /* 1-N: file cursor line. */
size_t cno; /* 0-N: file cursor column. */
#define FR_CURSORSET 0x0001 /* If lno/cno values valid. */
#define FR_DONTDELETE 0x0002 /* Don't delete the temporary file. */
#define FR_EXNAMED 0x0004 /* Read/write renamed the file. */
#define FR_NAMECHANGE 0x0008 /* If the name changed. */
#define FR_NEWFILE 0x0010 /* File doesn't really exist yet. */
#define FR_RECOVER 0x0020 /* File is being recovered. */
#define FR_TMPEXIT 0x0040 /* Modified temporary file, no exit. */
#define FR_TMPFILE 0x0080 /* If file has no name. */
#define FR_UNLOCKED 0x0100 /* File couldn't be locked. */
u_int16_t flags;
};
/* Action arguments to scr_exadjust(). */
typedef enum { EX_TERM_CE, EX_TERM_SCROLL } exadj_t;
/* Screen attribute arguments to scr_attr(). */
typedef enum { SA_ALTERNATE, SA_INVERSE } scr_attr_t;
/* Key type arguments to scr_keyval(). */
typedef enum { KEY_VEOF, KEY_VERASE, KEY_VKILL, KEY_VWERASE } scr_keyval_t;
/*
* GS:
*
* Structure that describes global state of the running program.
*/
struct _gs {
char *progname; /* Programe name. */
int id; /* Last allocated screen id. */
CIRCLEQ_HEAD(_dqh, _scr) dq; /* Displayed screens. */
CIRCLEQ_HEAD(_hqh, _scr) hq; /* Hidden screens. */
SCR *ccl_sp; /* Colon command-line screen. */
void *perl_interp; /* Perl interpreter. */
void *tcl_interp; /* Tcl_Interp *: Tcl interpreter. */
void *cl_private; /* Curses support private area. */
void *ip_private; /* IP support private area. */
void *tk_private; /* Tk/Tcl support private area. */
/* File references. */
CIRCLEQ_HEAD(_frefh, _fref) frefq;
#define GO_COLUMNS 0 /* Global options: columns. */
#define GO_LINES 1 /* Global options: lines. */
#define GO_SECURE 2 /* Global options: secure. */
#define GO_TERM 3 /* Global options: terminal type. */
OPTION opts[GO_TERM + 1];
DB *msg; /* Message catalog DB. */
MSGH msgq; /* User message list. */
#define DEFAULT_NOPRINT '\1' /* Emergency non-printable character. */
CHAR_T noprint; /* Cached, unprintable character. */
char *tmp_bp; /* Temporary buffer. */
size_t tmp_blen; /* Temporary buffer size. */
/*
* Ex command structures (EXCMD). Defined here because ex commands
* exist outside of any particular screen or file.
*/
#define EXCMD_RUNNING(gp) ((gp)->ecq.lh_first->clen != 0)
LIST_HEAD(_excmdh, _excmd) ecq; /* Ex command linked list. */
EXCMD excmd; /* Default ex command structure. */
char *if_name; /* Current associated file. */
recno_t if_lno; /* Current associated line number. */
char *c_option; /* Ex initial, command-line command. */
#ifdef DEBUG
FILE *tracefp; /* Trace file pointer. */
#endif
EVENT *i_event; /* Array of input events. */
size_t i_nelem; /* Number of array elements. */
size_t i_cnt; /* Count of events. */
size_t i_next; /* Offset of next event. */
CB *dcbp; /* Default cut buffer pointer. */
CB dcb_store; /* Default cut buffer storage. */
LIST_HEAD(_cuth, _cb) cutq; /* Linked list of cut buffers. */
#define MAX_BIT_SEQ 128 /* Max + 1 fast check character. */
LIST_HEAD(_seqh, _seq) seqq; /* Linked list of maps, abbrevs. */
bitstr_t bit_decl(seqb, MAX_BIT_SEQ);
#define MAX_FAST_KEY 254 /* Max fast check character.*/
#define KEY_LEN(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
sp->gp->cname[(unsigned char)ch].len : v_key_len(sp, ch))
#define KEY_NAME(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
sp->gp->cname[(unsigned char)ch].name : v_key_name(sp, ch))
struct {
CHAR_T name[MAX_CHARACTER_COLUMNS + 1];
u_int8_t len;
} cname[MAX_FAST_KEY + 1]; /* Fast lookup table. */
#define KEY_VAL(sp, ch) \
((unsigned char)(ch) <= MAX_FAST_KEY ? \
sp->gp->special_key[(unsigned char)ch] : \
(unsigned char)(ch) > sp->gp->max_special ? 0 : v_key_val(sp,ch))
CHAR_T max_special; /* Max special character. */
u_char /* Fast lookup table. */
special_key[MAX_FAST_KEY + 1];
/* Flags. */
#define G_ABBREV 0x0001 /* If have abbreviations. */
#define G_BELLSCHED 0x0002 /* Bell scheduled. */
#define G_INTERRUPTED 0x0004 /* Interrupted. */
#define G_RECOVER_SET 0x0008 /* Recover system initialized. */
#define G_SCRIPT 0x0010 /* Scripting windows running. */
#define G_SNAPSHOT 0x0020 /* Always snapshot files. */
#define G_SRESTART 0x0040 /* Screen restarted. */
#define G_STDIN_TTY 0x0080 /* Standard input is a tty. */
#define G_TMP_INUSE 0x0100 /* Temporary buffer in use. */
u_int32_t flags;
/* Screen interface functions. */
/* Add a string to the screen. */
int (*scr_addstr) __P((SCR *, const char *, size_t));
/* Toggle a screen attribute. */
int (*scr_attr) __P((SCR *, scr_attr_t, int));
/* Terminal baud rate. */
int (*scr_baud) __P((SCR *, u_long *));
/* Beep/bell/flash the terminal. */
int (*scr_bell) __P((SCR *));
/* Display a busy message. */
void (*scr_busy) __P((SCR *, const char *, busy_t));
/* Clear to the end of the line. */
int (*scr_clrtoeol) __P((SCR *));
/* Return the cursor location. */
int (*scr_cursor) __P((SCR *, size_t *, size_t *));
/* Delete a line. */
int (*scr_deleteln) __P((SCR *));
/* Get a keyboard event. */
int (*scr_event) __P((SCR *, EVENT *, u_int32_t, int));
/* Ex: screen adjustment routine. */
int (*scr_ex_adjust) __P((SCR *, exadj_t));
int (*scr_fmap) /* Set a function key. */
__P((SCR *, seq_t, CHAR_T *, size_t, CHAR_T *, size_t));
/* Get terminal key value. */
int (*scr_keyval) __P((SCR *, scr_keyval_t, CHAR_T *, int *));
/* Insert a line. */
int (*scr_insertln) __P((SCR *));
/* Handle an option change. */
int (*scr_optchange) __P((SCR *, int, char *, u_long *));
/* Move the cursor. */
int (*scr_move) __P((SCR *, size_t, size_t));
/* Message or ex output. */
void (*scr_msg) __P((SCR *, mtype_t, char *, size_t));
/* Refresh the screen. */
int (*scr_refresh) __P((SCR *, int));
/* Rename the file. */
int (*scr_rename) __P((SCR *, char *, int));
/* Set the screen type. */
int (*scr_screen) __P((SCR *, u_int32_t));
/* Suspend the editor. */
int (*scr_suspend) __P((SCR *, int *));
/* Print usage message. */
void (*scr_usage) __P((void));
};
/*
* XXX
* Block signals if there are asynchronous events. Used to keep DB system calls
* from being interrupted and not restarted, as that will result in consistency
* problems. This should be handled by DB.
*/
#ifdef BLOCK_SIGNALS
#include <signal.h>
extern sigset_t __sigblockset;
#define SIGBLOCK \
(void)sigprocmask(SIG_BLOCK, &__sigblockset, NULL)
#define SIGUNBLOCK \
(void)sigprocmask(SIG_UNBLOCK, &__sigblockset, NULL);
#else
#define SIGBLOCK
#define SIGUNBLOCK
#endif
|
