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
|
/*-
* Copyright (c) 1991, 1993, 1994
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1991, 1993, 1994, 1995, 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*
* @(#)key.h 10.18 (Berkeley) 6/30/96
*/
/*
* Fundamental character types.
*
* CHAR_T An integral type that can hold any character.
* ARG_CHAR_T The type of a CHAR_T when passed as an argument using
* traditional promotion rules. It should also be able
* to be compared against any CHAR_T for equality without
* problems.
* MAX_CHAR_T The maximum value of any character.
*
* If no integral type can hold a character, don't even try the port.
*/
typedef u_char CHAR_T;
typedef u_int ARG_CHAR_T;
#define MAX_CHAR_T 0xff
/* The maximum number of columns any character can take up on a screen. */
#define MAX_CHARACTER_COLUMNS 4
/*
* Event types.
*
* The program structure depends on the event loop being able to return
* E_EOF/E_ERR multiple times -- eventually enough things will end due
* to the events that vi will reach the command level for the screen, at
* which point the exit flags will be set and vi will exit.
*/
typedef enum {
E_NOTUSED = 0, /* Not set. */
E_CHARACTER, /* Input character: e_c set. */
E_EOF, /* End of input (NOT ^D). */
E_ERR, /* Input error. */
E_INTERRUPT, /* Interrupt. */
E_QUIT, /* Quit. */
E_REPAINT, /* Repaint: e_flno, e_tlno set. */
E_SIGHUP, /* SIGHUP. */
E_SIGTERM, /* SIGTERM. */
E_STRING, /* Input string: e_csp, e_len set. */
E_TIMEOUT, /* Timeout. */
E_WRESIZE, /* Window resize. */
E_WRITE /* Write. */
} e_event_t;
/*
* Character values.
*/
typedef enum {
K_NOTUSED = 0, /* Not set. */
K_BACKSLASH, /* \ */
K_CARAT, /* ^ */
K_CNTRLD, /* ^D */
K_CNTRLR, /* ^R */
K_CNTRLT, /* ^T */
K_CNTRLZ, /* ^Z */
K_COLON, /* : */
K_CR, /* \r */
K_ESCAPE, /* ^[ */
K_FORMFEED, /* \f */
K_HEXCHAR, /* ^X */
K_NL, /* \n */
K_RIGHTBRACE, /* } */
K_RIGHTPAREN, /* ) */
K_TAB, /* \t */
K_VERASE, /* set from tty: default ^H */
K_VKILL, /* set from tty: default ^U */
K_VLNEXT, /* set from tty: default ^V */
K_VWERASE, /* set from tty: default ^W */
K_ZERO /* 0 */
} e_key_t;
struct _event {
TAILQ_ENTRY(_event) q; /* Linked list of events. */
e_event_t e_event; /* Event type. */
union {
struct { /* Input character. */
CHAR_T c; /* Character. */
e_key_t value; /* Key type. */
#define CH_ABBREVIATED 0x01 /* Character is from an abbreviation. */
#define CH_MAPPED 0x02 /* Character is from a map. */
#define CH_NOMAP 0x04 /* Do not map the character. */
#define CH_QUOTED 0x08 /* Character is already quoted. */
u_int8_t flags;
} _e_ch;
#define e_ch _u_event._e_ch /* !!! The structure, not the char. */
#define e_c _u_event._e_ch.c
#define e_value _u_event._e_ch.value
#define e_flags _u_event._e_ch.flags
struct { /* Screen position, size. */
size_t lno1; /* Line number. */
size_t cno1; /* Column number. */
size_t lno2; /* Line number. */
size_t cno2; /* Column number. */
} _e_mark;
#define e_lno _u_event._e_mark.lno1 /* Single location. */
#define e_cno _u_event._e_mark.cno1
#define e_flno _u_event._e_mark.lno1 /* Text region. */
#define e_fcno _u_event._e_mark.cno1
#define e_tlno _u_event._e_mark.lno2
#define e_tcno _u_event._e_mark.cno2
struct { /* Input string. */
CHAR_T *asp; /* Allocated string. */
CHAR_T *csp; /* String. */
size_t len; /* String length. */
} _e_str;
#define e_asp _u_event._e_str.asp
#define e_csp _u_event._e_str.csp
#define e_len _u_event._e_str.len
} _u_event;
};
typedef struct _keylist {
e_key_t value; /* Special value. */
CHAR_T ch; /* Key. */
} KEYLIST;
extern KEYLIST keylist[];
/* Return if more keys in queue. */
#define KEYS_WAITING(sp) ((sp)->gp->i_cnt != 0)
#define MAPPED_KEYS_WAITING(sp) \
(KEYS_WAITING(sp) && \
F_ISSET(&sp->gp->i_event[sp->gp->i_next].e_ch, CH_MAPPED))
/*
* Ex/vi commands are generally separated by whitespace characters. We
* can't use the standard isspace(3) macro because it returns true for
* characters like ^K in the ASCII character set. The 4.4BSD isblank(3)
* macro does exactly what we want, but it's not portable yet.
*
* XXX
* Note side effect, ch is evaluated multiple times.
*/
#ifndef isblank
#define isblank(ch) ((ch) == ' ' || (ch) == '\t')
#endif
/* The "standard" tab width, for displaying things to users. */
#define STANDARD_TAB 6
/* Various special characters, messages. */
#define CH_BSEARCH '?' /* Backward search prompt. */
#define CH_CURSOR ' ' /* Cursor character. */
#define CH_ENDMARK '$' /* End of a range. */
#define CH_EXPROMPT ':' /* Ex prompt. */
#define CH_FSEARCH '/' /* Forward search prompt. */
#define CH_HEX '\030' /* Leading hex character. */
#define CH_LITERAL '\026' /* ASCII ^V. */
#define CH_NO 'n' /* No. */
#define CH_NOT_DIGIT 'a' /* A non-isdigit() character. */
#define CH_QUIT 'q' /* Quit. */
#define CH_YES 'y' /* Yes. */
/*
* Checking for interrupts means that we look at the bit that gets set if the
* screen code supports asynchronous events, and call back into the event code
* so that non-asynchronous screens get a chance to post the interrupt.
*
* INTERRUPT_CHECK is the number of lines "operated" on before checking for
* interrupts.
*/
#define INTERRUPT_CHECK 100
#define INTERRUPTED(sp) \
(F_ISSET((sp)->gp, G_INTERRUPTED) || \
(!v_event_get(sp, NULL, 0, EC_INTERRUPT) && \
F_ISSET((sp)->gp, G_INTERRUPTED)))
#define CLR_INTERRUPT(sp) \
F_CLR((sp)->gp, G_INTERRUPTED)
/* Flags describing types of characters being requested. */
#define EC_INTERRUPT 0x001 /* Checking for interrupts. */
#define EC_MAPCOMMAND 0x002 /* Apply the command map. */
#define EC_MAPINPUT 0x004 /* Apply the input map. */
#define EC_MAPNODIGIT 0x008 /* Return to a digit. */
#define EC_QUOTED 0x010 /* Try to quote next character */
#define EC_RAW 0x020 /* Any next character. XXX: not used. */
#define EC_TIMEOUT 0x040 /* Timeout to next character. */
/* Flags describing text input special cases. */
#define TXT_ADDNEWLINE 0x00000001 /* Replay starts on a new line. */
#define TXT_AICHARS 0x00000002 /* Leading autoindent chars. */
#define TXT_ALTWERASE 0x00000004 /* Option: altwerase. */
#define TXT_APPENDEOL 0x00000008 /* Appending after EOL. */
#define TXT_AUTOINDENT 0x00000010 /* Autoindent set this line. */
#define TXT_BACKSLASH 0x00000020 /* Backslashes escape characters. */
#define TXT_BEAUTIFY 0x00000040 /* Only printable characters. */
#define TXT_BS 0x00000080 /* Backspace returns the buffer. */
#define TXT_CEDIT 0x00000100 /* Can return TERM_CEDIT. */
#define TXT_CNTRLD 0x00000200 /* Control-D is a command. */
#define TXT_CNTRLT 0x00000400 /* Control-T is an indent special. */
#define TXT_CR 0x00000800 /* CR returns the buffer. */
#define TXT_DOTTERM 0x00001000 /* Leading '.' terminates the input. */
#define TXT_EMARK 0x00002000 /* End of replacement mark. */
#define TXT_EOFCHAR 0x00004000 /* ICANON set, return EOF character. */
#define TXT_ESCAPE 0x00008000 /* Escape returns the buffer. */
#define TXT_FILEC 0x00010000 /* Option: filec. */
#define TXT_INFOLINE 0x00020000 /* Editing the info line. */
#define TXT_MAPINPUT 0x00040000 /* Apply the input map. */
#define TXT_NLECHO 0x00080000 /* Echo the newline. */
#define TXT_NUMBER 0x00100000 /* Number the line. */
#define TXT_OVERWRITE 0x00200000 /* Overwrite characters. */
#define TXT_PROMPT 0x00400000 /* Display a prompt. */
#define TXT_RECORD 0x00800000 /* Record for replay. */
#define TXT_REPLACE 0x01000000 /* Replace; don't delete overwrite. */
#define TXT_REPLAY 0x02000000 /* Replay the last input. */
#define TXT_RESOLVE 0x04000000 /* Resolve the text into the file. */
#define TXT_SEARCHINCR 0x08000000 /* Incremental search. */
#define TXT_SHOWMATCH 0x10000000 /* Option: showmatch. */
#define TXT_TTYWERASE 0x20000000 /* Option: ttywerase. */
#define TXT_WRAPMARGIN 0x40000000 /* Option: wrapmargin. */
|
