aboutsummaryrefslogtreecommitdiff
path: root/termkey.h.in
blob: 8e3cad1a7a71b9dc25f6ee30f867dc9f9956d24f (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
#ifndef GUARD_TERMKEY_H_
#define GUARD_TERMKEY_H_

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

#define TERMKEY_VERSION_MAJOR @@VERSION_MAJOR@@
#define TERMKEY_VERSION_MINOR @@VERSION_MINOR@@

#define TERMKEY_CHECK_VERSION \
        termkey_check_version(TERMKEY_VERSION_MAJOR, TERMKEY_VERSION_MINOR)

typedef enum {
  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,

  // et cetera ad nauseum
} TermKeySym;

typedef enum {
  TERMKEY_TYPE_UNICODE,
  TERMKEY_TYPE_FUNCTION,
  TERMKEY_TYPE_KEYSYM,
  TERMKEY_TYPE_MOUSE,
} TermKeyType;

typedef enum {
  TERMKEY_RES_NONE,
  TERMKEY_RES_KEY,
  TERMKEY_RES_EOF,
  TERMKEY_RES_AGAIN,
} TermKeyResult;

typedef enum {
  TERMKEY_MOUSE_UNKNOWN,
  TERMKEY_MOUSE_PRESS,
  TERMKEY_MOUSE_DRAG,
  TERMKEY_MOUSE_RELEASE,
} TermKeyMouseEvent;

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

typedef struct {
  TermKeyType type;
  union {
    long       codepoint; // TERMKEY_TYPE_UNICODE
    int        number;    // TERMKEY_TYPE_FUNCTION
    TermKeySym sym;       // TERMKEY_TYPE_KEYSYM
    char       mouse[4];  // TERMKEY_TYPE_MOUSE
                          // opaque. see termkey_interpret_mouse
  } code;

  int modifiers;

  /* Any Unicode character can be UTF-8 encoded in no more than 6 bytes, plus
   * terminating NUL */
  char utf8[7];
} TermKeyKey;

typedef struct _TermKey TermKey;

enum {
  TERMKEY_FLAG_NOINTERPRET = 1 << 0, // Do not interpret C0//DEL codes if possible
  TERMKEY_FLAG_CONVERTKP   = 1 << 1, // Convert KP codes to regular keypresses
  TERMKEY_FLAG_RAW         = 1 << 2, // Input is raw bytes, not UTF-8
  TERMKEY_FLAG_UTF8        = 1 << 3, // Input is definitely UTF-8
  TERMKEY_FLAG_NOTERMIOS   = 1 << 4, // Do not make initial termios calls on construction
  TERMKEY_FLAG_SPACESYMBOL = 1 << 5, // Space is symbolic rather than Unicode
};

void termkey_check_version(int major, int minor);

TermKey *termkey_new(int fd, int flags);
void       termkey_free(TermKey *tk);
void       termkey_destroy(TermKey *tk);

int        termkey_get_fd(TermKey *tk);

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

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

TermKeyResult termkey_getkey(TermKey *tk, TermKeyKey *key);
TermKeyResult termkey_getkey_force(TermKey *tk, TermKeyKey *key);
TermKeyResult termkey_waitkey(TermKey *tk, TermKeyKey *key);

void       termkey_pushinput(TermKey *tk, unsigned char *input, size_t inputlen);

TermKeyResult termkey_advisereadable(TermKey *tk);

TermKeySym termkey_register_keyname(TermKey *tk, TermKeySym sym, const char *name);
const char *termkey_get_keyname(TermKey *tk, TermKeySym sym);

TermKeyResult termkey_interpret_mouse(TermKey *tk, TermKeyKey *key, TermKeyMouseEvent *event, int *button, int *line, int *col);

TermKeySym termkey_keyname2sym(TermKey *tk, const char *keyname); 

typedef enum {
  TERMKEY_FORMAT_LONGMOD     = 1 << 0, // Shift-... instead of S-...
  TERMKEY_FORMAT_CARETCTRL   = 1 << 1, // ^X instead of C-X
  TERMKEY_FORMAT_ALTISMETA   = 1 << 2, // Meta- or M- instead of Alt- or A-
  TERMKEY_FORMAT_WRAPBRACKET = 1 << 3, // Wrap special keys in brackets like <Escape>

  TERMKEY_FORMAT_MOUSE_POS   = 1 << 8, // Include mouse position if relevant; @ col,line
} TermKeyFormat;

// Some useful combinations

#define TERMKEY_FORMAT_VIM (TERMKEY_FORMAT_ALTISMETA|TERMKEY_FORMAT_WRAPBRACKET)

size_t termkey_snprint_key(TermKey *tk, char *buffer, size_t len, TermKeyKey *key, TermKeyFormat format);

// Legacy name typedefs

typedef TermKeySym    termkey_keysym;
typedef TermKeyType   termkey_type;
typedef TermKeyResult termkey_result;
typedef TermKeyKey    termkey_key;

typedef TermKey termkey_t;

#endif