aboutsummaryrefslogtreecommitdiff
path: root/termkey2.h
blob: 60a3038a37c75503159cc1c54b4313b80770a5bc (plain)
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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
#ifndef TERMKEY2_H
#define TERMKEY2_H

#include <stdint.h>
#include <stdlib.h>
#include <limits.h>

#include "termkey2-config.h"

#define TERMKEY_CHECK_VERSION \
	termkey_check_version (TERMKEY_VERSION_MAJOR, TERMKEY_VERSION_MINOR)

typedef enum termkey_sym termkey_sym_t;
enum termkey_sym
{
	TERMKEY_SYM_UNKNOWN = -1,
	TERMKEY_SYM_NONE = 0,

	/* Special names in C0 */
	TERMKEY_SYM_BACKSPACE,
	TERMKEY_SYM_TAB,
	TERMKEY_SYM_ENTER,
	TERMKEY_SYM_ESCAPE,

	/* Special names in G0 */
	TERMKEY_SYM_SPACE,
	TERMKEY_SYM_DEL,

	/* Special keys */
	TERMKEY_SYM_UP,
	TERMKEY_SYM_DOWN,
	TERMKEY_SYM_LEFT,
	TERMKEY_SYM_RIGHT,
	TERMKEY_SYM_BEGIN,
	TERMKEY_SYM_FIND,
	TERMKEY_SYM_INSERT,
	TERMKEY_SYM_DELETE,
	TERMKEY_SYM_SELECT,
	TERMKEY_SYM_PAGEUP,
	TERMKEY_SYM_PAGEDOWN,
	TERMKEY_SYM_HOME,
	TERMKEY_SYM_END,

	/* Special keys from terminfo */
	TERMKEY_SYM_CANCEL,
	TERMKEY_SYM_CLEAR,
	TERMKEY_SYM_CLOSE,
	TERMKEY_SYM_COMMAND,
	TERMKEY_SYM_COPY,
	TERMKEY_SYM_EXIT,
	TERMKEY_SYM_HELP,
	TERMKEY_SYM_MARK,
	TERMKEY_SYM_MESSAGE,
	TERMKEY_SYM_MOVE,
	TERMKEY_SYM_OPEN,
	TERMKEY_SYM_OPTIONS,
	TERMKEY_SYM_PRINT,
	TERMKEY_SYM_REDO,
	TERMKEY_SYM_REFERENCE,
	TERMKEY_SYM_REFRESH,
	TERMKEY_SYM_REPLACE,
	TERMKEY_SYM_RESTART,
	TERMKEY_SYM_RESUME,
	TERMKEY_SYM_SAVE,
	TERMKEY_SYM_SUSPEND,
	TERMKEY_SYM_UNDO,

	/* Numeric keypad special keys */
	TERMKEY_SYM_KP0,
	TERMKEY_SYM_KP1,
	TERMKEY_SYM_KP2,
	TERMKEY_SYM_KP3,
	TERMKEY_SYM_KP4,
	TERMKEY_SYM_KP5,
	TERMKEY_SYM_KP6,
	TERMKEY_SYM_KP7,
	TERMKEY_SYM_KP8,
	TERMKEY_SYM_KP9,
	TERMKEY_SYM_KPENTER,
	TERMKEY_SYM_KPPLUS,
	TERMKEY_SYM_KPMINUS,
	TERMKEY_SYM_KPMULT,
	TERMKEY_SYM_KPDIV,
	TERMKEY_SYM_KPCOMMA,
	TERMKEY_SYM_KPPERIOD,
	TERMKEY_SYM_KPEQUALS,

	TERMKEY_N_SYMS
};

typedef enum termkey_type termkey_type_t;
enum termkey_type
{
	TERMKEY_TYPE_KEY,
	TERMKEY_TYPE_FUNCTION,
	TERMKEY_TYPE_KEYSYM,
	TERMKEY_TYPE_MOUSE,
	TERMKEY_TYPE_POSITION,
	TERMKEY_TYPE_MODEREPORT,
	/* add other recognised types here */

	TERMKEY_TYPE_UNKNOWN_CSI = -1
};

typedef enum termkey_result termkey_result_t;
enum termkey_result
{
	TERMKEY_RES_NONE,
	TERMKEY_RES_KEY,
	TERMKEY_RES_EOF,
	TERMKEY_RES_AGAIN,
	TERMKEY_RES_ERROR
};

typedef enum termkey_mouse_event termkey_mouse_event_t;
enum termkey_mouse_event
{
	TERMKEY_MOUSE_UNKNOWN,
	TERMKEY_MOUSE_PRESS,
	TERMKEY_MOUSE_DRAG,
	TERMKEY_MOUSE_RELEASE
};

enum
{
	TERMKEY_KEYMOD_SHIFT = 1 << 0,
	TERMKEY_KEYMOD_ALT   = 1 << 1,
	TERMKEY_KEYMOD_CTRL  = 1 << 2
};

typedef struct termkey_key termkey_key_t;
struct termkey_key
{
	termkey_type_t type;
	union
	{
		uint32_t      codepoint; /* TERMKEY_TYPE_KEY */
		int           number;    /* TERMKEY_TYPE_FUNCTION */
		termkey_sym_t sym;       /* TERMKEY_TYPE_KEYSYM */
		// TODO: rewrite this insanity
		char          mouse[4];  /* TERMKEY_TYPE_MOUSE */
								 /* opaque, see termkey_interpret_mouse() */
	} code;

	int modifiers;

	/* The raw multibyte sequence for the key */
	char multibyte[MB_LEN_MAX + 1];
};

typedef struct termkey termkey_t;

enum
{
	/* Do not interpret C0//DEL codes if possible */
	TERMKEY_FLAG_NOINTERPRET = 1 << 0,
	/* Convert KP codes to regular keypresses */
	TERMKEY_FLAG_CONVERTKP   = 1 << 1,
	/* Don't try to decode the input characters */
	TERMKEY_FLAG_RAW         = 1 << 2,
	/* Do not make initial termios calls on construction */
	TERMKEY_FLAG_NOTERMIOS   = 1 << 4,
	/* Sets TERMKEY_CANON_SPACESYMBOL */
	TERMKEY_FLAG_SPACESYMBOL = 1 << 5,
	/* Allow Ctrl-C to be read as normal, disabling SIGINT */
	TERMKEY_FLAG_CTRLC       = 1 << 6,
	/* Return ERROR on signal (EINTR) rather than retry */
	TERMKEY_FLAG_EINTR       = 1 << 7
};

enum
{
	TERMKEY_CANON_SPACESYMBOL = 1 << 0, /* Space is symbolic rather than Unicode */
	TERMKEY_CANON_DELBS       = 1 << 1  /* Del is converted to Backspace */
};

void termkey_check_version (int major, int minor);

termkey_t *termkey_new (int fd, const char *encoding, int flags);
termkey_t *termkey_new_abstract (const char *term,
	const char *encoding, int flags);
void termkey_free (termkey_t *tk);
void termkey_destroy (termkey_t *tk);

int termkey_start (termkey_t *tk);
int termkey_stop (termkey_t *tk);
int termkey_is_started (termkey_t *tk);

int termkey_get_fd (termkey_t *tk);

int termkey_get_flags (termkey_t *tk);
void termkey_set_flags (termkey_t *tk, int newflags);

int termkey_get_waittime (termkey_t *tk);
void termkey_set_waittime (termkey_t *tk, int msec);

int termkey_get_canonflags (termkey_t *tk);
void termkey_set_canonflags (termkey_t *tk, int flags);

size_t termkey_get_buffer_size (termkey_t *tk);
int termkey_set_buffer_size (termkey_t *tk, size_t size);

size_t termkey_get_buffer_remaining (termkey_t *tk);

void termkey_canonicalise (termkey_t *tk, termkey_key_t *key);

termkey_result_t termkey_getkey (termkey_t *tk, termkey_key_t *key);
termkey_result_t termkey_getkey_force (termkey_t *tk, termkey_key_t *key);
termkey_result_t termkey_waitkey (termkey_t *tk, termkey_key_t *key);

termkey_result_t termkey_advisereadable (termkey_t *tk);

size_t termkey_push_bytes (termkey_t *tk, const char *bytes, size_t len);

termkey_sym_t termkey_register_keyname (termkey_t *tk,
	termkey_sym_t sym, const char *name);
const char *termkey_get_keyname (termkey_t *tk, termkey_sym_t sym);
const char *termkey_lookup_keyname (termkey_t *tk,
	const char *str, termkey_sym_t *sym);

termkey_sym_t termkey_keyname2sym (termkey_t *tk, const char *keyname);

termkey_result_t termkey_interpret_mouse (termkey_t *tk,
	const termkey_key_t *key, termkey_mouse_event_t *event,
	int *button, int *line, int *col);
termkey_result_t termkey_interpret_position (termkey_t *tk,
	const termkey_key_t *key, int *line, int *col);
termkey_result_t termkey_interpret_modereport (termkey_t *tk,
	const termkey_key_t *key, int *initial, int *mode, int *value);
termkey_result_t termkey_interpret_csi (termkey_t *tk,
	const termkey_key_t *key, long args[], size_t *nargs, unsigned long *cmd);

typedef enum termkey_format termkey_format_t;
enum termkey_format
{
	/* Shift-... instead of S-... */
	TERMKEY_FORMAT_LONGMOD     = 1 << 0,
	/* ^X instead of C-X */
	TERMKEY_FORMAT_CARETCTRL   = 1 << 1,
	/* Meta- or M- instead of Alt- or A- */
	TERMKEY_FORMAT_ALTISMETA   = 1 << 2,
	/* Wrap special keys in brackets like <Escape> */
	TERMKEY_FORMAT_WRAPBRACKET = 1 << 3,
	/* M Foo instead of M-Foo */
	TERMKEY_FORMAT_SPACEMOD    = 1 << 4,
	/* meta or m instead of Meta or M */
	TERMKEY_FORMAT_LOWERMOD    = 1 << 5,
	/* page down instead of PageDown */
	TERMKEY_FORMAT_LOWERSPACE  = 1 << 6,
	/* Include mouse position if relevant; @ col,line */
	TERMKEY_FORMAT_MOUSE_POS   = 1 << 8
};

/* Some useful combinations */

#define TERMKEY_FORMAT_VIM (termkey_format_t) \
	(TERMKEY_FORMAT_ALTISMETA | TERMKEY_FORMAT_WRAPBRACKET)
#define TERMKEY_FORMAT_URWID (termkey_format_t) \
	(TERMKEY_FORMAT_LONGMOD | TERMKEY_FORMAT_ALTISMETA | \
	 TERMKEY_FORMAT_LOWERMOD | TERMKEY_FORMAT_SPACEMOD | \
	 TERMKEY_FORMAT_LOWERSPACE)

size_t termkey_strfkey (termkey_t *tk, char *buffer, size_t len,
	termkey_key_t *key, termkey_format_t format);
const char *termkey_strpkey (termkey_t *tk, const char *str,
	termkey_key_t *key, termkey_format_t format);

int termkey_keycmp (termkey_t *tk,
	const termkey_key_t *key1, const termkey_key_t *key2);

#endif  // ! TERMKEY2_H