Annotation of src/usr.bin/tmux/tty-keys.c, Revision 1.16
1.16 ! nicm 1: /* $OpenBSD: tty-keys.c,v 1.15 2009/11/05 10:44:36 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20: #include <sys/time.h>
21:
22: #include <string.h>
1.3 nicm 23: #include <termios.h>
24: #include <unistd.h>
1.1 nicm 25:
26: #include "tmux.h"
27:
1.9 nicm 28: /*
1.16 ! nicm 29: * Handle keys input from the outside terminal. tty_keys[] is a base table of
! 30: * supported keys which are looked up in terminfo(5) and translated into a
! 31: * ternary tree (a binary tree of binary trees).
1.9 nicm 32: */
33:
1.16 ! nicm 34: void tty_keys_add1(struct tty_key **, const char *, int);
! 35: void tty_keys_add(struct tty *, const char *, int);
! 36: void tty_keys_free1(struct tty_key *);
! 37: struct tty_key *tty_keys_find1(
! 38: struct tty_key *, const char *, size_t, size_t *);
! 39: struct tty_key *tty_keys_find(struct tty *, const char *, size_t, size_t *);
! 40: void tty_keys_callback(int, short, void *);
! 41: int tty_keys_mouse(char *, size_t, size_t *, struct mouse_event *);
1.1 nicm 42:
43: struct tty_key_ent {
44: enum tty_code_code code;
45: const char *string;
46:
47: int key;
48: int flags;
1.15 nicm 49: #define TTYKEY_CTRL 0x1
50: #define TTYKEY_RAW 0x2
1.1 nicm 51: };
52:
1.16 ! nicm 53: /*
! 54: * Default key tables. Those flagged with TTYKEY_RAW are inserted directly,
! 55: * otherwise they are looked up in terminfo(5). Any keys marked TTYKEY_CTRL
! 56: * have their last byte twiddled and are inserted as a Ctrl key as well.
! 57: */
1.1 nicm 58: struct tty_key_ent tty_keys[] = {
59: /* Function keys. */
1.8 nicm 60: { TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
61: { TTYC_KF1, NULL, KEYC_F1, TTYKEY_CTRL },
62: { TTYC_KF2, NULL, KEYC_F2, TTYKEY_CTRL },
63: { TTYC_KF3, NULL, KEYC_F3, TTYKEY_CTRL },
64: { TTYC_KF4, NULL, KEYC_F4, TTYKEY_CTRL },
65: { TTYC_KF5, NULL, KEYC_F5, TTYKEY_CTRL },
66: { TTYC_KF6, NULL, KEYC_F6, TTYKEY_CTRL },
67: { TTYC_KF7, NULL, KEYC_F7, TTYKEY_CTRL },
68: { TTYC_KF8, NULL, KEYC_F8, TTYKEY_CTRL },
69: { TTYC_KF9, NULL, KEYC_F9, TTYKEY_CTRL },
70: { TTYC_KF10, NULL, KEYC_F10, TTYKEY_CTRL },
71: { TTYC_KF11, NULL, KEYC_F11, TTYKEY_CTRL },
72: { TTYC_KF12, NULL, KEYC_F12, TTYKEY_CTRL },
73: { TTYC_KF13, NULL, KEYC_F13, TTYKEY_CTRL },
74: { TTYC_KF14, NULL, KEYC_F14, TTYKEY_CTRL },
75: { TTYC_KF15, NULL, KEYC_F15, TTYKEY_CTRL },
76: { TTYC_KF16, NULL, KEYC_F16, TTYKEY_CTRL },
77: { TTYC_KF17, NULL, KEYC_F17, TTYKEY_CTRL },
78: { TTYC_KF18, NULL, KEYC_F18, TTYKEY_CTRL },
79: { TTYC_KF19, NULL, KEYC_F19, TTYKEY_CTRL },
80: { TTYC_KF20, NULL, KEYC_F20, TTYKEY_CTRL },
81: { TTYC_KICH1, NULL, KEYC_IC, TTYKEY_CTRL },
82: { TTYC_KDCH1, NULL, KEYC_DC, TTYKEY_CTRL },
83: { TTYC_KHOME, NULL, KEYC_HOME, TTYKEY_CTRL },
84: { TTYC_KEND, NULL, KEYC_END, TTYKEY_CTRL },
85: { TTYC_KNP, NULL, KEYC_NPAGE, TTYKEY_CTRL },
86: { TTYC_KPP, NULL, KEYC_PPAGE, TTYKEY_CTRL },
87: { TTYC_KCBT, NULL, KEYC_BTAB, TTYKEY_CTRL },
1.1 nicm 88:
1.12 nicm 89: /* Arrow keys. */
1.8 nicm 90: { 0, "\033OA", KEYC_UP, TTYKEY_RAW },
91: { 0, "\033OB", KEYC_DOWN, TTYKEY_RAW },
92: { 0, "\033OC", KEYC_RIGHT, TTYKEY_RAW },
93: { 0, "\033OD", KEYC_LEFT, TTYKEY_RAW },
94:
1.12 nicm 95: { 0, "\033[A", KEYC_UP, TTYKEY_RAW },
96: { 0, "\033[B", KEYC_DOWN, TTYKEY_RAW },
97: { 0, "\033[C", KEYC_RIGHT, TTYKEY_RAW },
98: { 0, "\033[D", KEYC_LEFT, TTYKEY_RAW },
1.8 nicm 99:
1.12 nicm 100: { TTYC_KCUU1, NULL, KEYC_UP, TTYKEY_CTRL },
101: { TTYC_KCUD1, NULL, KEYC_DOWN, TTYKEY_CTRL },
102: { TTYC_KCUB1, NULL, KEYC_LEFT, TTYKEY_CTRL },
103: { TTYC_KCUF1, NULL, KEYC_RIGHT, TTYKEY_CTRL },
104:
105: /* Special-case arrow keys for rxvt until terminfo has kRIT5 etc. */
1.8 nicm 106: { 0, "\033Oa", KEYC_UP|KEYC_CTRL, TTYKEY_RAW },
107: { 0, "\033Ob", KEYC_DOWN|KEYC_CTRL, TTYKEY_RAW },
108: { 0, "\033Oc", KEYC_RIGHT|KEYC_CTRL, TTYKEY_RAW },
109: { 0, "\033Od", KEYC_LEFT|KEYC_CTRL, TTYKEY_RAW },
1.9 nicm 110:
1.8 nicm 111: { 0, "\033[a", KEYC_UP|KEYC_SHIFT, TTYKEY_RAW },
112: { 0, "\033[b", KEYC_DOWN|KEYC_SHIFT, TTYKEY_RAW },
113: { 0, "\033[c", KEYC_RIGHT|KEYC_SHIFT, TTYKEY_RAW },
114: { 0, "\033[d", KEYC_LEFT|KEYC_SHIFT, TTYKEY_RAW },
1.1 nicm 115:
116: /*
1.8 nicm 117: * Numeric keypad. Just use the vt100 escape sequences here and always
118: * put the terminal into keypad_xmit mode. Translation of numbers
119: * mode/applications mode is done in input-keys.c.
1.1 nicm 120: */
1.8 nicm 121: { 0, "\033Oo", KEYC_KP_SLASH, TTYKEY_RAW },
122: { 0, "\033Oj", KEYC_KP_STAR, TTYKEY_RAW },
123: { 0, "\033Om", KEYC_KP_MINUS, TTYKEY_RAW },
124: { 0, "\033Ow", KEYC_KP_SEVEN, TTYKEY_RAW },
125: { 0, "\033Ox", KEYC_KP_EIGHT, TTYKEY_RAW },
126: { 0, "\033Oy", KEYC_KP_NINE, TTYKEY_RAW },
127: { 0, "\033Ok", KEYC_KP_PLUS, TTYKEY_RAW },
128: { 0, "\033Ot", KEYC_KP_FOUR, TTYKEY_RAW },
129: { 0, "\033Ou", KEYC_KP_FIVE, TTYKEY_RAW },
130: { 0, "\033Ov", KEYC_KP_SIX, TTYKEY_RAW },
131: { 0, "\033Oq", KEYC_KP_ONE, TTYKEY_RAW },
132: { 0, "\033Or", KEYC_KP_TWO, TTYKEY_RAW },
133: { 0, "\033Os", KEYC_KP_THREE, TTYKEY_RAW },
134: { 0, "\033OM", KEYC_KP_ENTER, TTYKEY_RAW },
135: { 0, "\033Op", KEYC_KP_ZERO, TTYKEY_RAW },
136: { 0, "\033On", KEYC_KP_PERIOD, TTYKEY_RAW },
1.10 nicm 137:
138: /* Key and modifier capabilities. */
139: { TTYC_KDC2, NULL, KEYC_DC|KEYC_SHIFT, 0 },
140: { TTYC_KDC3, NULL, KEYC_DC|KEYC_ESCAPE, 0 },
141: { TTYC_KDC4, NULL, KEYC_DC|KEYC_SHIFT|KEYC_ESCAPE, 0 },
142: { TTYC_KDC5, NULL, KEYC_DC|KEYC_CTRL, 0 },
143: { TTYC_KDC6, NULL, KEYC_DC|KEYC_SHIFT|KEYC_CTRL, 0 },
144: { TTYC_KDC7, NULL, KEYC_DC|KEYC_ESCAPE|KEYC_CTRL, 0 },
145: { TTYC_KDN2, NULL, KEYC_DOWN|KEYC_SHIFT, 0 },
146: { TTYC_KDN3, NULL, KEYC_DOWN|KEYC_ESCAPE, 0 },
147: { TTYC_KDN4, NULL, KEYC_DOWN|KEYC_SHIFT|KEYC_ESCAPE, 0 },
148: { TTYC_KDN5, NULL, KEYC_DOWN|KEYC_CTRL, 0 },
149: { TTYC_KDN6, NULL, KEYC_DOWN|KEYC_SHIFT|KEYC_CTRL, 0 },
150: { TTYC_KDN7, NULL, KEYC_DOWN|KEYC_ESCAPE|KEYC_CTRL, 0 },
151: { TTYC_KEND2, NULL, KEYC_END|KEYC_SHIFT, 0 },
152: { TTYC_KEND3, NULL, KEYC_END|KEYC_ESCAPE, 0 },
153: { TTYC_KEND4, NULL, KEYC_END|KEYC_SHIFT|KEYC_ESCAPE, 0 },
154: { TTYC_KEND5, NULL, KEYC_END|KEYC_CTRL, 0 },
155: { TTYC_KEND6, NULL, KEYC_END|KEYC_SHIFT|KEYC_CTRL, 0 },
156: { TTYC_KEND7, NULL, KEYC_END|KEYC_ESCAPE|KEYC_CTRL, 0 },
157: { TTYC_KHOM2, NULL, KEYC_HOME|KEYC_SHIFT, 0 },
158: { TTYC_KHOM3, NULL, KEYC_HOME|KEYC_ESCAPE, 0 },
159: { TTYC_KHOM4, NULL, KEYC_HOME|KEYC_SHIFT|KEYC_ESCAPE, 0 },
160: { TTYC_KHOM5, NULL, KEYC_HOME|KEYC_CTRL, 0 },
161: { TTYC_KHOM6, NULL, KEYC_HOME|KEYC_SHIFT|KEYC_CTRL, 0 },
162: { TTYC_KHOM7, NULL, KEYC_HOME|KEYC_ESCAPE|KEYC_CTRL, 0 },
163: { TTYC_KIC2, NULL, KEYC_IC|KEYC_SHIFT, 0 },
164: { TTYC_KIC3, NULL, KEYC_IC|KEYC_ESCAPE, 0 },
165: { TTYC_KIC4, NULL, KEYC_IC|KEYC_SHIFT|KEYC_ESCAPE, 0 },
166: { TTYC_KIC5, NULL, KEYC_IC|KEYC_CTRL, 0 },
167: { TTYC_KIC6, NULL, KEYC_IC|KEYC_SHIFT|KEYC_CTRL, 0 },
168: { TTYC_KIC7, NULL, KEYC_IC|KEYC_ESCAPE|KEYC_CTRL, 0 },
169: { TTYC_KLFT2, NULL, KEYC_LEFT|KEYC_SHIFT, 0 },
170: { TTYC_KLFT3, NULL, KEYC_LEFT|KEYC_ESCAPE, 0 },
171: { TTYC_KLFT4, NULL, KEYC_LEFT|KEYC_SHIFT|KEYC_ESCAPE, 0 },
172: { TTYC_KLFT5, NULL, KEYC_LEFT|KEYC_CTRL, 0 },
173: { TTYC_KLFT6, NULL, KEYC_LEFT|KEYC_SHIFT|KEYC_CTRL, 0 },
174: { TTYC_KLFT7, NULL, KEYC_LEFT|KEYC_ESCAPE|KEYC_CTRL, 0 },
175: { TTYC_KNXT2, NULL, KEYC_NPAGE|KEYC_SHIFT, 0 },
176: { TTYC_KNXT3, NULL, KEYC_NPAGE|KEYC_ESCAPE, 0 },
177: { TTYC_KNXT4, NULL, KEYC_NPAGE|KEYC_SHIFT|KEYC_ESCAPE, 0 },
178: { TTYC_KNXT5, NULL, KEYC_NPAGE|KEYC_CTRL, 0 },
179: { TTYC_KNXT6, NULL, KEYC_NPAGE|KEYC_SHIFT|KEYC_CTRL, 0 },
180: { TTYC_KNXT7, NULL, KEYC_NPAGE|KEYC_ESCAPE|KEYC_CTRL, 0 },
181: { TTYC_KPRV2, NULL, KEYC_PPAGE|KEYC_SHIFT, 0 },
182: { TTYC_KPRV3, NULL, KEYC_PPAGE|KEYC_ESCAPE, 0 },
183: { TTYC_KPRV4, NULL, KEYC_PPAGE|KEYC_SHIFT|KEYC_ESCAPE, 0 },
184: { TTYC_KPRV5, NULL, KEYC_PPAGE|KEYC_CTRL, 0 },
185: { TTYC_KPRV6, NULL, KEYC_PPAGE|KEYC_SHIFT|KEYC_CTRL, 0 },
186: { TTYC_KPRV7, NULL, KEYC_PPAGE|KEYC_ESCAPE|KEYC_CTRL, 0 },
187: { TTYC_KRIT2, NULL, KEYC_RIGHT|KEYC_SHIFT, 0 },
188: { TTYC_KRIT3, NULL, KEYC_RIGHT|KEYC_ESCAPE, 0 },
189: { TTYC_KRIT4, NULL, KEYC_RIGHT|KEYC_SHIFT|KEYC_ESCAPE, 0 },
190: { TTYC_KRIT5, NULL, KEYC_RIGHT|KEYC_CTRL, 0 },
191: { TTYC_KRIT6, NULL, KEYC_RIGHT|KEYC_SHIFT|KEYC_CTRL, 0 },
192: { TTYC_KRIT7, NULL, KEYC_RIGHT|KEYC_ESCAPE|KEYC_CTRL, 0 },
193: { TTYC_KUP2, NULL, KEYC_UP|KEYC_SHIFT, 0 },
194: { TTYC_KUP3, NULL, KEYC_UP|KEYC_ESCAPE, 0 },
195: { TTYC_KUP4, NULL, KEYC_UP|KEYC_SHIFT|KEYC_ESCAPE, 0 },
196: { TTYC_KUP5, NULL, KEYC_UP|KEYC_CTRL, 0 },
197: { TTYC_KUP6, NULL, KEYC_UP|KEYC_SHIFT|KEYC_CTRL, 0 },
198: { TTYC_KUP7, NULL, KEYC_UP|KEYC_ESCAPE|KEYC_CTRL, 0 },
1.1 nicm 199: };
200:
1.16 ! nicm 201: void
! 202: tty_keys_add(struct tty *tty, const char *s, int key)
! 203: {
! 204: size_t size;
1.1 nicm 205:
1.16 ! nicm 206: if (tty_keys_find(tty, s, strlen(s), &size) == NULL) {
! 207: log_debug("new key 0x%x: %s", key, s);
! 208: tty_keys_add1(&tty->key_tree, s, key);
! 209: }
1.1 nicm 210: }
211:
1.16 ! nicm 212: /* Add next node to the tree. */
1.1 nicm 213: void
1.16 ! nicm 214: tty_keys_add1(struct tty_key **tkp, const char *s, int key)
1.1 nicm 215: {
1.16 ! nicm 216: struct tty_key *tk;
1.1 nicm 217:
1.16 ! nicm 218: /* Allocate a tree entry if there isn't one already. */
! 219: tk = *tkp;
! 220: if (tk == NULL) {
! 221: tk = *tkp = xcalloc(1, sizeof *tk);
! 222: tk->ch = *s;
! 223: tk->key = KEYC_NONE;
! 224: }
! 225:
! 226: /* Find the next entry. */
! 227: if (*s == tk->ch) {
! 228: /* Move forward in string. */
! 229: s++;
! 230:
! 231: /* If this is the end of the string, no more is necessary. */
! 232: if (*s == '\0') {
! 233: tk->key = key;
! 234: return;
! 235: }
! 236:
! 237: /* Use the child tree for the next character. */
! 238: tkp = &tk->next;
! 239: } else {
! 240: if (*s < tk->ch)
! 241: tkp = &tk->left;
! 242: else if (*s > tk->ch)
! 243: tkp = &tk->right;
! 244: }
! 245:
! 246: /* And recurse to add it. */
! 247: tty_keys_add1(tkp, s, key);
1.1 nicm 248: }
249:
1.16 ! nicm 250: /* Initialise a key tree from the table. */
1.1 nicm 251: void
252: tty_keys_init(struct tty *tty)
253: {
254: struct tty_key_ent *tke;
255: u_int i;
256: const char *s;
257: char tmp[64];
258:
1.16 ! nicm 259: tty->key_tree = NULL;
1.1 nicm 260: for (i = 0; i < nitems(tty_keys); i++) {
261: tke = &tty_keys[i];
262:
263: if (tke->flags & TTYKEY_RAW)
264: s = tke->string;
265: else {
266: if (!tty_term_has(tty->term, tke->code))
267: continue;
268: s = tty_term_string(tty->term, tke->code);
269: }
1.16 ! nicm 270: if (s[0] != '\033' || s[1] == '\0')
! 271: continue;
1.1 nicm 272:
1.15 nicm 273: tty_keys_add(tty, s + 1, tke->key);
1.16 ! nicm 274: if (!(tke->flags & TTYKEY_CTRL)) {
1.1 nicm 275: if (strlcpy(tmp, s, sizeof tmp) >= sizeof tmp)
276: continue;
277: tmp[strlen(tmp) - 1] ^= 0x20;
1.15 nicm 278: tty_keys_add(tty, tmp + 1, tke->key | KEYC_CTRL);
1.1 nicm 279: }
280: }
281: }
282:
1.16 ! nicm 283: /* Free the entire key tree. */
1.1 nicm 284: void
285: tty_keys_free(struct tty *tty)
286: {
1.16 ! nicm 287: tty_keys_free1(tty->key_tree);
! 288: }
1.1 nicm 289:
1.16 ! nicm 290: /* Free a single key. */
! 291: void
! 292: tty_keys_free1(struct tty_key *tk)
! 293: {
! 294: if (tk->next != NULL)
! 295: tty_keys_free1(tk->next);
! 296: if (tk->left != NULL)
! 297: tty_keys_free1(tk->left);
! 298: if (tk->right != NULL)
! 299: tty_keys_free1(tk->right);
! 300: xfree(tk);
! 301:
1.1 nicm 302: }
303:
1.16 ! nicm 304: /* Lookup a key in the tree. */
1.1 nicm 305: struct tty_key *
1.16 ! nicm 306: tty_keys_find(struct tty *tty, const char *buf, size_t len, size_t *size)
1.1 nicm 307: {
1.16 ! nicm 308: *size = 0;
! 309: return (tty_keys_find1(tty->key_tree, buf, len, size));
! 310: }
1.1 nicm 311:
1.16 ! nicm 312: /* Find the next node. */
! 313: struct tty_key *
! 314: tty_keys_find1(struct tty_key *tk, const char *buf, size_t len, size_t *size)
! 315: {
! 316: /* If the node is NULL, this is the end of the tree. No match. */
! 317: if (tk == NULL)
1.1 nicm 318: return (NULL);
319:
1.16 ! nicm 320: /* Pick the next in the sequence. */
! 321: if (tk->ch == *buf) {
! 322: /* Move forward in the string. */
! 323: buf++; len--;
! 324: (*size)++;
1.1 nicm 325:
1.16 ! nicm 326: /* At the end of the string, return the current node. */
! 327: if (len == 0)
! 328: return (tk);
1.1 nicm 329:
1.16 ! nicm 330: /* Move into the next tree for the following character. */
! 331: tk = tk->next;
! 332: } else {
! 333: if (*buf < tk->ch)
! 334: tk = tk->left;
! 335: else if (*buf > tk->ch)
! 336: tk = tk->right;
1.1 nicm 337: }
338:
1.16 ! nicm 339: /* Move to the next in the tree. */
! 340: return (tty_keys_find1(tk, buf, len, size));
1.1 nicm 341: }
342:
1.16 ! nicm 343: /*
! 344: * Process at least one key in the buffer and invoke tty->key_callback. Return
! 345: * 1 if there are no further keys, or 0 if there is more in the buffer.
! 346: */
1.1 nicm 347: int
1.14 nicm 348: tty_keys_next(struct tty *tty)
1.1 nicm 349: {
1.14 nicm 350: struct tty_key *tk;
351: struct timeval tv;
352: struct mouse_event mouse;
1.16 ! nicm 353: char *buf, *ptr;
1.14 nicm 354: size_t len, size;
355: cc_t bspace;
356: int key;
1.1 nicm 357:
1.13 nicm 358: buf = EVBUFFER_DATA(tty->event->input);
359: len = EVBUFFER_LENGTH(tty->event->input);
1.1 nicm 360: if (len == 0)
1.14 nicm 361: return (0);
1.1 nicm 362: log_debug("keys are %zu (%.*s)", len, (int) len, buf);
363:
364: /* If a normal key, return it. */
365: if (*buf != '\033') {
1.16 ! nicm 366: key = *buf;
! 367: evbuffer_drain(tty->event->input, 1);
1.3 nicm 368:
369: /*
370: * Check for backspace key using termios VERASE - the terminfo
371: * kbs entry is extremely unreliable, so cannot be safely
372: * used. termios should have a better idea.
373: */
374: bspace = tty->tio.c_cc[VERASE];
1.14 nicm 375: if (bspace != _POSIX_VDISABLE && key == bspace)
376: key = KEYC_BSPACE;
1.16 ! nicm 377: goto handle_key;
1.1 nicm 378: }
379:
380: /* Look for matching key string and return if found. */
381: tk = tty_keys_find(tty, buf + 1, len - 1, &size);
382: if (tk != NULL) {
1.14 nicm 383: key = tk->key;
1.16 ! nicm 384: goto found_key;
1.1 nicm 385: }
386:
387: /* Not found. Is this a mouse key press? */
1.14 nicm 388: key = tty_keys_mouse(buf, len, &size, &mouse);
389: if (key != KEYC_NONE) {
1.13 nicm 390: evbuffer_drain(tty->event->input, size);
1.16 ! nicm 391: goto handle_key;
1.11 nicm 392: }
393:
394: /* Not found. Try to parse a key with an xterm-style modifier. */
1.14 nicm 395: key = xterm_keys_find(buf, len, &size);
396: if (key != KEYC_NONE) {
1.13 nicm 397: evbuffer_drain(tty->event->input, size);
1.16 ! nicm 398: goto handle_key;
1.1 nicm 399: }
400:
401: /* Skip the escape. */
402: buf++;
403: len--;
404:
405: /* Is there a normal key following? */
406: if (len != 0 && *buf != '\033') {
1.16 ! nicm 407: key = *buf | KEYC_ESCAPE;
! 408: evbuffer_drain(tty->event->input, 2);
! 409: goto handle_key;
1.1 nicm 410: }
411:
412: /* Or a key string? */
413: if (len > 1) {
414: tk = tty_keys_find(tty, buf + 1, len - 1, &size);
415: if (tk != NULL) {
1.14 nicm 416: key = tk->key | KEYC_ESCAPE;
1.16 ! nicm 417: size++; /* include escape */
! 418: goto found_key;
1.1 nicm 419: }
420: }
421:
1.16 ! nicm 422: /* Escape and then nothing useful - fall through. */
! 423:
! 424: partial_key:
1.14 nicm 425: /*
1.16 ! nicm 426: * Escape but no key string. If have already seen an escape, then the
1.14 nicm 427: * timer must have expired, so give up waiting and send the escape.
428: */
429: if (tty->flags & TTY_ESCAPE) {
430: evbuffer_drain(tty->event->input, 1);
431: key = '\033';
1.16 ! nicm 432: goto handle_key;
1.14 nicm 433: }
434:
1.16 ! nicm 435: /* Fall through to start the timer. */
! 436:
! 437: start_timer:
1.14 nicm 438: /* Start the timer and wait for expiry or more data. */
439: tv.tv_sec = 0;
440: tv.tv_usec = ESCAPE_PERIOD * 1000L;
441:
442: evtimer_del(&tty->key_timer);
443: evtimer_set(&tty->key_timer, tty_keys_callback, tty);
444: evtimer_add(&tty->key_timer, &tv);
445:
446: tty->flags |= TTY_ESCAPE;
447: return (0);
1.1 nicm 448:
1.16 ! nicm 449: found_key:
! 450: if (tk->next != NULL) {
! 451: /* Partial key. Start the timer if not already expired. */
! 452: if (!(tty->flags & TTY_ESCAPE))
! 453: goto start_timer;
! 454:
! 455: /* Otherwise, if no key, send the escape alone. */
! 456: if (tk->key == KEYC_NONE)
! 457: goto partial_key;
! 458:
! 459: /* Or fall through to send the partial key found. */
! 460: }
! 461: evbuffer_drain(tty->event->input, size + 1);
! 462:
! 463: goto handle_key;
! 464:
! 465: handle_key:
! 466: evtimer_del(&tty->key_timer);
! 467:
1.14 nicm 468: tty->key_callback(key, &mouse, tty->key_data);
1.16 ! nicm 469:
1.1 nicm 470: tty->flags &= ~TTY_ESCAPE;
1.14 nicm 471: return (1);
472: }
473:
1.16 ! nicm 474: /* Key timer callback. */
1.14 nicm 475: void
476: tty_keys_callback(unused int fd, unused short events, void *data)
477: {
478: struct tty *tty = data;
479:
1.16 ! nicm 480: if (!(tty->flags & TTY_ESCAPE))
! 481: return;
! 482:
! 483: while (tty_keys_next(tty))
! 484: ;
1.1 nicm 485: }
486:
1.16 ! nicm 487: /* Handle mouse key input. */
1.1 nicm 488: int
1.6 nicm 489: tty_keys_mouse(char *buf, size_t len, size_t *size, struct mouse_event *m)
1.1 nicm 490: {
491: /*
492: * Mouse sequences are \033[M followed by three characters indicating
493: * buttons, X and Y, all based at 32 with 1,1 top-left.
494: */
495:
496: if (len != 6 || memcmp(buf, "\033[M", 3) != 0)
497: return (KEYC_NONE);
498: *size = 6;
1.16 ! nicm 499:
! 500: log_debug("mouse input is: %.*s", (int) len, buf);
1.1 nicm 501:
1.5 nicm 502: m->b = buf[3];
503: m->x = buf[4];
504: m->y = buf[5];
505: if (m->b < 32 || m->x < 33 || m->y < 33)
1.1 nicm 506: return (KEYC_NONE);
1.5 nicm 507: m->b -= 32;
508: m->x -= 33;
509: m->y -= 33;
1.1 nicm 510: return (KEYC_MOUSE);
511: }
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