Annotation of src/usr.bin/tmux/xterm-keys.c, Revision 1.11
1.11 ! nicm 1: /* $OpenBSD: xterm-keys.c,v 1.10 2011/06/23 10:02:49 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2009 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:
21: #include <string.h>
22:
23: #include "tmux.h"
24:
25: /*
26: * xterm-style function keys append one of the following values before the last
27: * character:
28: *
29: * 2 Shift
1.5 nicm 30: * 3 Alt
31: * 4 Shift + Alt
32: * 5 Ctrl
33: * 6 Shift + Ctrl
34: * 7 Alt + Ctrl
1.1 nicm 35: * 8 Shift + Alt + Ctrl
36: *
37: * Rather than parsing them, just match against a table.
38: *
1.10 nicm 39: * There are three forms for F1-F4 (\\033O_P and \\033O1;_P and \\033[1;_P).
40: * We accept any but always output the latter (it comes first in the table).
1.1 nicm 41: */
42:
43: int xterm_keys_match(const char *, const char *, size_t);
44: int xterm_keys_modifiers(const char *, const char *, size_t);
45:
46: struct xterm_keys_entry {
47: int key;
48: const char *template;
49: };
50:
1.8 nicm 51: const struct xterm_keys_entry xterm_keys_table[] = {
1.1 nicm 52: { KEYC_F1, "\033[1;_P" },
1.10 nicm 53: { KEYC_F1, "\033O1;_P" },
1.3 nicm 54: { KEYC_F1, "\033O_P" },
1.1 nicm 55: { KEYC_F2, "\033[1;_Q" },
1.10 nicm 56: { KEYC_F2, "\033O1;_Q" },
1.3 nicm 57: { KEYC_F2, "\033O_Q" },
1.1 nicm 58: { KEYC_F3, "\033[1;_R" },
1.10 nicm 59: { KEYC_F3, "\033O1;_R" },
1.3 nicm 60: { KEYC_F3, "\033O_R" },
1.1 nicm 61: { KEYC_F4, "\033[1;_S" },
1.10 nicm 62: { KEYC_F4, "\033O1;_S" },
1.3 nicm 63: { KEYC_F4, "\033O_S" },
1.1 nicm 64: { KEYC_F5, "\033[15;_~" },
65: { KEYC_F6, "\033[17;_~" },
66: { KEYC_F7, "\033[18;_~" },
67: { KEYC_F8, "\033[19;_~" },
68: { KEYC_F9, "\033[20;_~" },
69: { KEYC_F10, "\033[21;_~" },
70: { KEYC_F11, "\033[23;_~" },
71: { KEYC_F12, "\033[24;_~" },
72: { KEYC_F13, "\033[25;_~" },
73: { KEYC_F14, "\033[26;_~" },
74: { KEYC_F15, "\033[28;_~" },
75: { KEYC_F16, "\033[29;_~" },
76: { KEYC_F17, "\033[31;_~" },
77: { KEYC_F18, "\033[32;_~" },
78: { KEYC_F19, "\033[33;_~" },
79: { KEYC_F20, "\033[34;_~" },
80: { KEYC_UP, "\033[1;_A" },
81: { KEYC_DOWN, "\033[1;_B" },
82: { KEYC_RIGHT, "\033[1;_C" },
83: { KEYC_LEFT, "\033[1;_D" },
84: { KEYC_HOME, "\033[1;_H" },
85: { KEYC_END, "\033[1;_F" },
86: { KEYC_PPAGE, "\033[5;_~" },
87: { KEYC_NPAGE, "\033[6;_~" },
88: { KEYC_IC, "\033[2;_~" },
89: { KEYC_DC, "\033[3;_~" },
1.11 ! nicm 90:
! 91: { '!', "\033[27;_;33~" },
! 92: { '#', "\033[27;_;35~" },
! 93: { '(', "\033[27;_;40~" },
! 94: { ')', "\033[27;_;41~" },
! 95: { '+', "\033[27;_;43~" },
! 96: { ',', "\033[27;_;44~" },
! 97: { '-', "\033[27;_;45~" },
! 98: { '.', "\033[27;_;46~" },
! 99: { '0', "\033[27;_;48~" },
! 100: { '1', "\033[27;_;49~" },
! 101: { '2', "\033[27;_;50~" },
! 102: { '3', "\033[27;_;51~" },
! 103: { '4', "\033[27;_;52~" },
! 104: { '5', "\033[27;_;53~" },
! 105: { '6', "\033[27;_;54~" },
! 106: { '7', "\033[27;_;55~" },
! 107: { '8', "\033[27;_;56~" },
! 108: { '9', "\033[27;_;57~" },
! 109: { ':', "\033[27;_;58~" },
! 110: { ';', "\033[27;_;59~" },
! 111: { '<', "\033[27;_;60~" },
! 112: { '=', "\033[27;_;61~" },
! 113: { '>', "\033[27;_;62~" },
! 114: { '?', "\033[27;_;63~" },
! 115: { '\'', "\033[27;_;39~" },
! 116: { '\r', "\033[27;_;13~" },
! 117: { '\t', "\033[27;_;9~" },
1.1 nicm 118: };
119:
1.5 nicm 120: /*
1.4 nicm 121: * Match key against buffer, treating _ as a wildcard. Return -1 for no match,
122: * 0 for match, 1 if the end of the buffer is reached (need more data).
123: */
1.1 nicm 124: int
125: xterm_keys_match(const char *template, const char *buf, size_t len)
126: {
127: size_t pos;
128:
1.4 nicm 129: if (len == 0)
1.1 nicm 130: return (0);
131:
132: pos = 0;
133: do {
134: if (*template != '_' && buf[pos] != *template)
1.4 nicm 135: return (-1);
1.1 nicm 136: } while (pos++ != len && *++template != '\0');
137:
1.4 nicm 138: if (*template != '\0') /* partial */
139: return (1);
140:
141: return (0);
1.1 nicm 142: }
143:
144: /* Find modifiers based on template. */
145: int
146: xterm_keys_modifiers(const char *template, const char *buf, size_t len)
147: {
148: size_t idx;
1.6 nicm 149: int param, modifiers;
1.1 nicm 150:
151: idx = strcspn(template, "_");
152: if (idx >= len)
153: return (0);
1.6 nicm 154: param = buf[idx] - '1';
155:
156: modifiers = 0;
157: if (param & 1)
158: modifiers |= KEYC_SHIFT;
159: if (param & 2)
160: modifiers |= KEYC_ESCAPE;
161: if (param & 4)
162: modifiers |= KEYC_CTRL;
1.7 nicm 163: if (param & 8)
164: modifiers |= KEYC_ESCAPE;
1.6 nicm 165: return (modifiers);
1.1 nicm 166: }
167:
1.4 nicm 168: /*
169: * Lookup key from a buffer against the table. Returns 0 for found (and the
170: * key), -1 for not found, 1 for partial match.
171: */
1.1 nicm 172: int
1.4 nicm 173: xterm_keys_find(const char *buf, size_t len, size_t *size, int *key)
1.1 nicm 174: {
1.8 nicm 175: const struct xterm_keys_entry *entry;
176: u_int i;
1.1 nicm 177:
178: for (i = 0; i < nitems(xterm_keys_table); i++) {
179: entry = &xterm_keys_table[i];
1.4 nicm 180: switch (xterm_keys_match(entry->template, buf, len)) {
181: case 0:
182: *size = strlen(entry->template);
183: *key = entry->key;
184: *key |= xterm_keys_modifiers(entry->template, buf, len);
185: return (0);
186: case 1:
187: return (1);
188: }
1.1 nicm 189: }
1.4 nicm 190: return (-1);
1.1 nicm 191: }
192:
193: /* Lookup a key number from the table. */
194: char *
195: xterm_keys_lookup(int key)
196: {
1.8 nicm 197: const struct xterm_keys_entry *entry;
198: u_int i;
199: int modifiers;
200: char *out;
1.1 nicm 201:
1.6 nicm 202: modifiers = 1;
203: if (key & KEYC_SHIFT)
204: modifiers += 1;
205: if (key & KEYC_ESCAPE)
206: modifiers += 2;
207: if (key & KEYC_CTRL)
208: modifiers += 4;
1.1 nicm 209:
210: /*
211: * If the key has no modifiers, return NULL and let it fall through to
212: * the normal lookup.
213: */
1.6 nicm 214: if (modifiers == 1)
1.1 nicm 215: return (NULL);
216:
217: /* Otherwise, find the key in the table. */
218: key &= ~(KEYC_SHIFT|KEYC_ESCAPE|KEYC_CTRL);
219: for (i = 0; i < nitems(xterm_keys_table); i++) {
220: entry = &xterm_keys_table[i];
221: if (key == entry->key)
222: break;
223: }
224: if (i == nitems(xterm_keys_table))
225: return (NULL);
1.5 nicm 226:
1.1 nicm 227: /* Copy the template and replace the modifier. */
228: out = xstrdup(entry->template);
229: out[strcspn(out, "_")] = '0' + modifiers;
230: return (out);
231: }
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