2 * Copyright (c) 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 * Copyright (c) 1993, 1994, 1995, 1996
5 * Keith Bostic. All rights reserved.
7 * See the LICENSE file for redistribution information.
9 * $Id: gs.h,v 10.43 2000/07/02 20:31:59 skimo Exp $ (Berkeley) $Date: 2000/07/02 20:31:59 $
12 #define TEMPORARY_FILE_STRING "/tmp" /* Default temporary file name. */
15 * File reference structure (FREF). The structure contains the name of the
16 * file, along with the information that follows the name.
19 * The read-only bit follows the file name, not the file itself.
22 CIRCLEQ_ENTRY(_fref
) q
; /* Linked list of file references. */
23 char *name
; /* File name. */
24 char *tname
; /* Backing temporary file name. */
26 db_recno_t lno
; /* 1-N: file cursor line. */
27 size_t cno
; /* 0-N: file cursor column. */
29 #define FR_CURSORSET 0x0001 /* If lno/cno values valid. */
30 #define FR_DONTDELETE 0x0002 /* Don't delete the temporary file. */
31 #define FR_EXNAMED 0x0004 /* Read/write renamed the file. */
32 #define FR_NAMECHANGE 0x0008 /* If the name changed. */
33 #define FR_NEWFILE 0x0010 /* File doesn't really exist yet. */
34 #define FR_RECOVER 0x0020 /* File is being recovered. */
35 #define FR_TMPEXIT 0x0040 /* Modified temporary file, no exit. */
36 #define FR_TMPFILE 0x0080 /* If file has no name. */
37 #define FR_UNLOCKED 0x0100 /* File couldn't be locked. */
41 /* Action arguments to scr_exadjust(). */
42 typedef enum { EX_TERM_CE
, EX_TERM_SCROLL
} exadj_t
;
44 /* Screen attribute arguments to scr_attr(). */
45 typedef enum { SA_ALTERNATE
, SA_INVERSE
} scr_attr_t
;
47 /* Key type arguments to scr_keyval(). */
48 typedef enum { KEY_VEOF
, KEY_VERASE
, KEY_VKILL
, KEY_VWERASE
} scr_keyval_t
;
53 * Structure that describes global state of the running program.
56 char *progname
; /* Programe name. */
58 int id
; /* Last allocated screen id. */
59 CIRCLEQ_HEAD(_dqh
, _win
) dq
; /* Displayed windows. */
60 CIRCLEQ_HEAD(_hqh
, _scr
) hq
; /* Hidden screens. */
62 SCR
*ccl_sp
; /* Colon command-line screen. */
64 void *perl_interp
; /* Perl interpreter. */
65 void *tcl_interp
; /* Tcl_Interp *: Tcl interpreter. */
67 void *cl_private
; /* Curses support private area. */
68 void *tk_private
; /* Tk/Tcl support private area. */
70 /* File references. */
71 CIRCLEQ_HEAD(_frefh
, _fref
) frefq
;
72 /* File structures. */
73 CIRCLEQ_HEAD(_exfh
, _exf
) exfq
;
75 #define GO_COLUMNS 0 /* Global options: columns. */
76 #define GO_LINES 1 /* Global options: lines. */
77 #define GO_SECURE 2 /* Global options: secure. */
78 #define GO_TERM 3 /* Global options: terminal type. */
79 OPTION opts
[GO_TERM
+ 1];
81 DB_ENV
*env
; /* The DB environment. */
83 DB
*msg
; /* Message catalog DB. */
84 MSGH msgq
; /* User message list. */
85 #define DEFAULT_NOPRINT '\1' /* Emergency non-printable character. */
86 CHAR_T noprint
; /* Cached, unprintable character. */
88 char *tmp_bp
; /* Temporary buffer. */
89 size_t tmp_blen
; /* Temporary buffer size. */
91 char *c_option
; /* Ex initial, command-line command. */
94 FILE *tracefp
; /* Trace file pointer. */
97 EVENT
*i_event
; /* Array of input events. */
98 size_t i_nelem
; /* Number of array elements. */
99 size_t i_cnt
; /* Count of events. */
100 size_t i_next
; /* Offset of next event. */
102 CB
*dcbp
; /* Default cut buffer pointer. */
103 CB dcb_store
; /* Default cut buffer storage. */
104 LIST_HEAD(_cuth
, _cb
) cutq
; /* Linked list of cut buffers. */
106 #define MAX_BIT_SEQ 128 /* Max + 1 fast check character. */
107 LIST_HEAD(_seqh
, _seq
) seqq
; /* Linked list of maps, abbrevs. */
108 bitstr_t
bit_decl(seqb
, MAX_BIT_SEQ
);
110 #define MAX_FAST_KEY 255 /* Max fast check character.*/
111 #define KEY_LEN(sp, ch) \
112 ((unsigned char)(ch) <= MAX_FAST_KEY ? \
113 sp->gp->cname[(unsigned char)ch].len : v_key_len(sp, ch))
114 #define KEY_NAME(sp, ch) \
115 ((unsigned char)(ch) <= MAX_FAST_KEY ? \
116 sp->gp->cname[(unsigned char)ch].name : v_key_name(sp, ch))
118 CHAR_T name
[MAX_CHARACTER_COLUMNS
+ 1];
120 } cname
[MAX_FAST_KEY
+ 1]; /* Fast lookup table. */
122 #define KEY_VAL(sp, ch) \
123 ((unsigned char)(ch) <= MAX_FAST_KEY ? \
124 sp->gp->special_key[(unsigned char)ch] : \
125 (unsigned char)(ch) > sp->gp->max_special ? 0 : v_key_val(sp,ch))
126 CHAR_T max_special
; /* Max special character. */
127 u_char
/* Fast lookup table. */
128 special_key
[MAX_FAST_KEY
+ 1];
131 #define G_ABBREV 0x0001 /* If have abbreviations. */
132 #define G_BELLSCHED 0x0002 /* Bell scheduled. */
133 #define G_INTERRUPTED 0x0004 /* Interrupted. */
134 #define G_RECOVER_SET 0x0008 /* Recover system initialized. */
135 #define G_SCRIPTED 0x0010 /* Ex script session. */
136 #define G_SCRWIN 0x0020 /* Scripting windows running. */
137 #define G_SNAPSHOT 0x0040 /* Always snapshot files. */
138 #define G_SRESTART 0x0080 /* Screen restarted. */
139 #define G_TMP_INUSE 0x0100 /* Temporary buffer in use. */
142 /* Screen interface functions. */
143 /* Add a string to the screen. */
144 int (*scr_addstr
) __P((SCR
*, const char *, size_t));
145 /* Toggle a screen attribute. */
146 int (*scr_attr
) __P((SCR
*, scr_attr_t
, int));
147 /* Terminal baud rate. */
148 int (*scr_baud
) __P((SCR
*, u_long
*));
149 /* Beep/bell/flash the terminal. */
150 int (*scr_bell
) __P((SCR
*));
151 /* Display a busy message. */
152 void (*scr_busy
) __P((SCR
*, const char *, busy_t
));
153 /* Clear to the end of the line. */
154 int (*scr_clrtoeol
) __P((SCR
*));
155 /* Return the cursor location. */
156 int (*scr_cursor
) __P((SCR
*, size_t *, size_t *));
158 int (*scr_deleteln
) __P((SCR
*));
159 /* Discard a screen. */
160 int (*scr_discard
) __P((SCR
*, SCR
**));
161 /* Get a keyboard event. */
162 int (*scr_event
) __P((SCR
*, EVENT
*, u_int32_t
, int));
163 /* Ex: screen adjustment routine. */
164 int (*scr_ex_adjust
) __P((SCR
*, exadj_t
));
165 int (*scr_fmap
) /* Set a function key. */
166 __P((SCR
*, seq_t
, CHAR_T
*, size_t, CHAR_T
*, size_t));
167 /* Get terminal key value. */
168 int (*scr_keyval
) __P((SCR
*, scr_keyval_t
, CHAR_T
*, int *));
170 int (*scr_insertln
) __P((SCR
*));
171 /* Handle an option change. */
172 int (*scr_optchange
) __P((SCR
*, int, char *, u_long
*));
173 /* Move the cursor. */
174 int (*scr_move
) __P((SCR
*, size_t, size_t));
175 /* Message or ex output. */
176 void (*scr_msg
) __P((SCR
*, mtype_t
, char *, size_t));
177 /* Refresh the screen. */
178 int (*scr_refresh
) __P((SCR
*, int));
179 /* Rename the file. */
180 int (*scr_rename
) __P((SCR
*, char *, int));
181 /* Reply to an event. */
182 int (*scr_reply
) __P((SCR
*, int, char *));
183 /* Set the screen type. */
184 int (*scr_screen
) __P((SCR
*, u_int32_t
));
185 /* Split the screen. */
186 int (*scr_split
) __P((SCR
*, SCR
*));
187 /* Suspend the editor. */
188 int (*scr_suspend
) __P((SCR
*, int *));
189 /* Print usage message. */
190 void (*scr_usage
) __P((void));
192 /* Threading stuff */
195 void (*run
) __P((WIN
*, void (*)(void*), void *));
200 * Block signals if there are asynchronous events. Used to keep DB system calls
201 * from being interrupted and not restarted, as that will result in consistency
202 * problems. This should be handled by DB.
206 extern sigset_t __sigblockset
;
208 (void)sigprocmask(SIG_BLOCK, &__sigblockset, NULL)
210 (void)sigprocmask(SIG_UNBLOCK, &__sigblockset, NULL);