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Ticket #2082: don't save input line content in history if dialog was canceled.
[kaloumi3.git] / lib / tty / key.c
blobb1064a3c65cb2a26367a6450af5b5726002083cf
1 /* Keyboard support routines.
2
3 Copyright (C) 1994, 1995, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2009 Free Software Foundation, Inc.
5
6 Written by: 1994, 1995 Miguel de Icaza.
7 1994, 1995 Janne Kukonlehto.
8 1995 Jakub Jelinek.
9 1997 Norbert Warmuth
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
24
25 /** \file key.c
26 * \brief Source: keyboard support routines
27 */
28
29 #include <config.h>
30
31 #include <ctype.h>
32 #include <errno.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <sys/time.h>
37 #include <sys/types.h>
38 #include <unistd.h>
39
40 #include "lib/global.h"
41 #include "lib/strutil.h" /* str_casecmp */
42
43 #include "lib/vfs/mc-vfs/vfs.h"
44
45 #ifdef ENABLE_VFS
46 #include "lib/vfs/mc-vfs/gc.h"
47 #endif /* ENABLE_VFS */
48
49 #include "tty.h"
50 #include "tty-internal.h" /* mouse_enabled */
51 #include "mouse.h"
52 #include "key.h"
53 #include "win.h" /* xterm_flag */
54
55 #include "src/main.h"
56 #include "src/layout.h" /* winch_flag, mc_refresh() */
57 #include "src/consaver/cons.saver.h"
58
59
60 #ifdef HAVE_TEXTMODE_X11_SUPPORT
61 #include "x11conn.h"
62 #endif
63
64 #ifdef __linux__
65 #if defined(__GLIBC__) && (__GLIBC__ < 2)
66 # include <linux/termios.h> /* TIOCLINUX */
67 #else
68 # include <termios.h>
69 #endif
70 #include <sys/ioctl.h>
71 #endif /* __linux__ */
72
73 #ifdef __CYGWIN__
74 #include <termios.h>
75 #include <sys/ioctl.h>
76 #endif /* __CYGWIN__ */
77
78 #ifdef __QNXNTO__
79 #include <dlfcn.h>
80 #include <Ph.h>
81 #include <sys/dcmd_chr.h>
82 #endif /* __QNXNTO__ */
83
84 /*** global variables **************************************************/
85
86 /* If true, use + and \ keys normally and select/unselect do if M-+ / M-\.
87 and M-- and keypad + / - */
88 int alternate_plus_minus = 0;
89
90 int mou_auto_repeat = 100;
91 int double_click_speed = 250;
92 int old_esc_mode = 0;
93 int use_8th_bit_as_meta = 0;
94
95 /* This table is a mapping between names and the constants we use
96 * We use this to allow users to define alternate definitions for
97 * certain keys that may be missing from the terminal database
98 */
99 const key_code_name_t key_name_conv_tab[] = {
100 /* KEY_F(0) is not here, since we are mapping it to f10, so there is no reason
101 to define f0 as well. Also, it makes Learn keys a bunch of problems :( */
102 { KEY_F (1), "f1", N_("Function key 1"), "F1" },
103 { KEY_F (2), "f2", N_("Function key 2"), "F2" },
104 { KEY_F (3), "f3", N_("Function key 3"), "F3" },
105 { KEY_F (4), "f4", N_("Function key 4"), "F4" },
106 { KEY_F (5), "f5", N_("Function key 5"), "F5" },
107 { KEY_F (6), "f6", N_("Function key 6"), "F6" },
108 { KEY_F (7), "f7", N_("Function key 7"), "F7" },
109 { KEY_F (8), "f8", N_("Function key 8"), "F8" },
110 { KEY_F (9), "f9", N_("Function key 9"), "F9" },
111 { KEY_F (10), "f10", N_("Function key 10"), "F10" },
112 { KEY_F (11), "f11", N_("Function key 11"), "F11" },
113 { KEY_F (12), "f12", N_("Function key 12"), "F12" },
114 { KEY_F (13), "f13", N_("Function key 13"), "F13" },
115 { KEY_F (14), "f14", N_("Function key 14"), "F14" },
116 { KEY_F (15), "f15", N_("Function key 15"), "F15" },
117 { KEY_F (16), "f16", N_("Function key 16"), "F16" },
118 { KEY_F (17), "f17", N_("Function key 17"), "F17" },
119 { KEY_F (18), "f18", N_("Function key 18"), "F18" },
120 { KEY_F (19), "f19", N_("Function key 19"), "F19" },
121 { KEY_F (20), "f20", N_("Function key 20"), "F20" },
122 { KEY_BACKSPACE, "backspace", N_("Backspace key"), "Backspace" },
123 { KEY_END, "end", N_("End key"), "End" },
124 { KEY_UP, "up", N_("Up arrow key"), "Up" },
125 { KEY_DOWN, "down", N_("Down arrow key"), "Down" },
126 { KEY_LEFT, "left", N_("Left arrow key"), "Left" },
127 { KEY_RIGHT, "right", N_("Right arrow key"), "Right" },
128 { KEY_HOME, "home", N_("Home key"), "Home" },
129 { KEY_NPAGE, "pgdn", N_("Page Down key"), "PgDn" },
130 { KEY_PPAGE, "pgup", N_("Page Up key"), "PgUp" },
131 { KEY_IC, "insert", N_("Insert key"), "Ins" },
132 { KEY_DC, "delete", N_("Delete key"), "Del" },
133 { ALT ('\t'), "complete", N_("Completion/M-tab"), "Meta-Tab" },
134 { KEY_KP_ADD, "kpplus", N_("+ on keypad"), "+" },
135 { KEY_KP_SUBTRACT, "kpminus", N_("- on keypad"), "-" },
136 { (int) '/', "kpslash", N_("Slash on keypad"), "/" },
137 { KEY_KP_MULTIPLY, "kpasterisk", N_("* on keypad"), "*" },
138
139 /* From here on, these won't be shown in Learn keys (no space) */
140 { ESC_CHAR, "escape", N_("Escape key"), "Esc" },
141 { KEY_LEFT, "kpleft", N_("Left arrow keypad"), "Left" },
142 { KEY_RIGHT, "kpright", N_("Right arrow keypad"), "Right" },
143 { KEY_UP, "kpup", N_("Up arrow keypad"), "Up" },
144 { KEY_DOWN, "kpdown", N_("Down arrow keypad"), "Down" },
145 { KEY_HOME, "kphome", N_("Home on keypad"), "Home" },
146 { KEY_END, "kpend", N_("End on keypad"), "End" },
147 { KEY_NPAGE, "kpnpage", N_("Page Down keypad"), "PgDn" },
148 { KEY_PPAGE, "kpppage", N_("Page Up keypad"), "PgUp" },
149 { KEY_IC, "kpinsert", N_("Insert on keypad"), "Ins" },
150 { KEY_DC, "kpdelete", N_("Delete on keypad"), "Del" },
151 { (int) '\n', "kpenter", N_("Enter on keypad"), "Enter" },
152 { KEY_F (21), "f21", N_("Function key 21"), "F21" },
153 { KEY_F (22), "f22", N_("Function key 22"), "F22" },
154 { KEY_F (23), "f23", N_("Function key 23"), "F23" },
155 { KEY_F (24), "f24", N_("Function key 24"), "F24" },
156
157 /* Alternative label */
158 { ESC_CHAR, "esc", N_("Escape key"), "Esc" },
159 { KEY_BACKSPACE, "bs", N_("Backspace key"), "Bakspace" },
160 { KEY_IC, "ins", N_("Insert key"), "Ins" },
161 { KEY_DC, "del", N_("Delete key"), "Del" },
162 { (int) '+', "plus", N_("Plus"), "+" },
163 { (int) '-', "minus", N_("Minus"), "-" },
164 { (int) '*', "asterisk", N_("Asterisk"), "*" },
165 { (int) '.', "dot", N_("Dot"), "." },
166 { (int) '<', "lt", N_("Less than"), "<" },
167 { (int) '>', "gt", N_("Great than"), ">" },
168 { (int) '=', "equal", N_("Equal"), "=" },
169 { (int) ',', "comma", N_("Comma"), "," },
170 { (int) '\'', "apostrophe", N_("Apostrophe"), "\'" },
171 { (int) ':', "colon", N_("Colon"), ":" },
172 { (int) '!', "exclamation", N_("Exclamation mark"), "!" },
173 { (int) '?', "question", N_("Question mark"), "?" },
174 { (int) '&', "ampersand", N_("Ampersand"), "&" },
175 { (int) '$', "dollar", N_("Dollar sign"), "$" },
176 { (int) '"', "quota", N_("Quotation mark"), "\"" },
177 { (int) '^', "caret", N_("Caret"), "^" },
178 { (int) '~', "tilda", N_("Tilda"), "~" },
179 { (int) '`', "prime", N_("Prime"), "`" },
180 { (int) '_', "underline", N_("Underline"), "_" },
181 { (int) '_', "understrike", N_("Understrike"), "_" },
182 { (int) '|', "pipe", N_("Pipe"), "|" },
183 { (int) '\n', "enter", N_("Enter"), "Enter" },
184 { (int) '\t', "tab", N_("Tab key"), "Tab" },
185 { (int) ' ', "space", N_("Space key"), "Space" },
186 { (int) '/', "slash", N_("Slash key"), "/" },
187 { (int) '\\', "backslash", N_("Backslash key"), "\\" },
188 { (int) '#', "number", N_("Number sign #"), "#" },
189 { (int) '#', "hash", N_("Number sign #"), "#" },
190
191 /* meta keys */
192 { KEY_M_CTRL, "control", N_("Ctrl"), "C" },
193 { KEY_M_CTRL, "ctrl", N_("Ctrl"), "C" },
194 { KEY_M_ALT, "meta", N_("Alt"), "M" },
195 { KEY_M_ALT, "alt", N_("Alt"), "M" },
196 { KEY_M_ALT, "ralt", N_("Alt"), "M" },
197 { KEY_M_SHIFT, "shift", N_("Shift"), "S" },
198
199 { 0, NULL, NULL, NULL }
200 };
201
202
203 /*** file scope macro definitions **************************************/
204
205 #define GET_TIME(tv) (gettimeofday(&tv, (struct timezone *) NULL))
206 #define DIF_TIME(t1, t2) ((t2.tv_sec - t1.tv_sec) * 1000 + (t2.tv_usec - t1.tv_usec)/1000)
207
208 /* The maximum sequence length (32 + null terminator) */
209 #define SEQ_BUFFER_LEN 33
210
211 /*** file scope type declarations **************************************/
212
213 /* Linux console keyboard modifiers */
214 typedef enum {
215 SHIFT_PRESSED = (1 << 0),
216 ALTR_PRESSED = (1 << 1),
217 CONTROL_PRESSED = (1 << 2),
218 ALTL_PRESSED = (1 << 3)
219 } mod_pressed_t;
220
221 typedef struct key_def {
222 char ch; /* Holds the matching char code */
223 int code; /* The code returned, valid if child == NULL */
224 struct key_def *next;
225 struct key_def *child; /* sequence continuation */
226 int action; /* optional action to be done. Now used only
227 to mark that we are just after the first
228 Escape */
229 } key_def;
230
231 typedef struct {
232 int code;
233 const char *seq;
234 int action;
235 } key_define_t;
236
237 /* File descriptor monitoring add/remove routines */
238 typedef struct SelectList {
239 int fd;
240 select_fn callback;
241 void *info;
242 struct SelectList *next;
243 } SelectList;
244
245 #ifdef __QNXNTO__
246 typedef int (*ph_dv_f) (void *, void *);
247 typedef int (*ph_ov_f) (void *);
248 typedef int (*ph_pqc_f) (unsigned short, PhCursorInfo_t *);
249 #endif
250
251 /*** file scope variables **********************************************/
252
253 static key_define_t mc_default_keys[] = {
254 {ESC_CHAR, ESC_STR, MCKEY_ESCAPE},
255 {ESC_CHAR, ESC_STR ESC_STR, MCKEY_NOACTION},
256 {0, NULL, MCKEY_NOACTION},
257 };
258
259 /* Broken terminfo and termcap databases on xterminals */
260 static key_define_t xterm_key_defines[] = {
261 {KEY_F (1), ESC_STR "OP", MCKEY_NOACTION},
262 {KEY_F (2), ESC_STR "OQ", MCKEY_NOACTION},
263 {KEY_F (3), ESC_STR "OR", MCKEY_NOACTION},
264 {KEY_F (4), ESC_STR "OS", MCKEY_NOACTION},
265 {KEY_F (1), ESC_STR "[11~", MCKEY_NOACTION},
266 {KEY_F (2), ESC_STR "[12~", MCKEY_NOACTION},
267 {KEY_F (3), ESC_STR "[13~", MCKEY_NOACTION},
268 {KEY_F (4), ESC_STR "[14~", MCKEY_NOACTION},
269 {KEY_F (5), ESC_STR "[15~", MCKEY_NOACTION},
270 {KEY_F (6), ESC_STR "[17~", MCKEY_NOACTION},
271 {KEY_F (7), ESC_STR "[18~", MCKEY_NOACTION},
272 {KEY_F (8), ESC_STR "[19~", MCKEY_NOACTION},
273 {KEY_F (9), ESC_STR "[20~", MCKEY_NOACTION},
274 {KEY_F (10), ESC_STR "[21~", MCKEY_NOACTION},
275
276 /* old xterm Shift-arrows */
277 {KEY_M_SHIFT | KEY_UP, ESC_STR "O2A", MCKEY_NOACTION},
278 {KEY_M_SHIFT | KEY_DOWN, ESC_STR "O2B", MCKEY_NOACTION},
279 {KEY_M_SHIFT | KEY_RIGHT, ESC_STR "O2C", MCKEY_NOACTION},
280 {KEY_M_SHIFT | KEY_LEFT, ESC_STR "O2D", MCKEY_NOACTION},
281
282 /* new xterm Shift-arrows */
283 {KEY_M_SHIFT | KEY_UP, ESC_STR "[1;2A", MCKEY_NOACTION},
284 {KEY_M_SHIFT | KEY_DOWN, ESC_STR "[1;2B", MCKEY_NOACTION},
285 {KEY_M_SHIFT | KEY_RIGHT, ESC_STR "[1;2C", MCKEY_NOACTION},
286 {KEY_M_SHIFT | KEY_LEFT, ESC_STR "[1;2D", MCKEY_NOACTION},
287
288 /* more xterm keys with modifiers */
289 {KEY_M_CTRL | KEY_PPAGE, ESC_STR "[5;5~", MCKEY_NOACTION},
290 {KEY_M_CTRL | KEY_NPAGE, ESC_STR "[6;5~", MCKEY_NOACTION},
291 {KEY_M_CTRL | KEY_IC, ESC_STR "[2;5~", MCKEY_NOACTION},
292 {KEY_M_CTRL | KEY_DC, ESC_STR "[3;5~", MCKEY_NOACTION},
293 {KEY_M_CTRL | KEY_HOME, ESC_STR "[1;5H", MCKEY_NOACTION},
294 {KEY_M_CTRL | KEY_END, ESC_STR "[1;5F", MCKEY_NOACTION},
295 {KEY_M_SHIFT | KEY_HOME, ESC_STR "[1;2H", MCKEY_NOACTION},
296 {KEY_M_SHIFT | KEY_END, ESC_STR "[1;2F", MCKEY_NOACTION},
297 {KEY_M_CTRL | KEY_UP, ESC_STR "[1;5A", MCKEY_NOACTION},
298 {KEY_M_CTRL | KEY_DOWN, ESC_STR "[1;5B", MCKEY_NOACTION},
299 {KEY_M_CTRL | KEY_RIGHT, ESC_STR "[1;5C", MCKEY_NOACTION},
300 {KEY_M_CTRL | KEY_LEFT, ESC_STR "[1;5D", MCKEY_NOACTION},
301 {KEY_M_SHIFT | KEY_IC, ESC_STR "[2;2~", MCKEY_NOACTION},
302 {KEY_M_SHIFT | KEY_DC, ESC_STR "[3;2~", MCKEY_NOACTION},
303 {KEY_M_SHIFT | KEY_M_CTRL | KEY_UP, ESC_STR "[1;6A", MCKEY_NOACTION},
304 {KEY_M_SHIFT | KEY_M_CTRL | KEY_DOWN, ESC_STR "[1;6B", MCKEY_NOACTION},
305 {KEY_M_SHIFT | KEY_M_CTRL | KEY_RIGHT, ESC_STR "[1;6C", MCKEY_NOACTION},
306 {KEY_M_SHIFT | KEY_M_CTRL | KEY_LEFT, ESC_STR "[1;6D", MCKEY_NOACTION},
307
308 /* putty */
309 {KEY_M_SHIFT | KEY_M_CTRL | KEY_UP, ESC_STR "[[1;6A", MCKEY_NOACTION},
310 {KEY_M_SHIFT | KEY_M_CTRL | KEY_DOWN, ESC_STR "[[1;6B", MCKEY_NOACTION},
311 {KEY_M_SHIFT | KEY_M_CTRL | KEY_RIGHT, ESC_STR "[[1;6C", MCKEY_NOACTION},
312 {KEY_M_SHIFT | KEY_M_CTRL | KEY_LEFT, ESC_STR "[[1;6D", MCKEY_NOACTION},
313
314 /* putty alt-arrow keys */
315 /* removed as source esc esc esc trouble */
316 /*
317 { KEY_M_ALT | KEY_UP, ESC_STR ESC_STR "OA", MCKEY_NOACTION },
318 { KEY_M_ALT | KEY_DOWN, ESC_STR ESC_STR "OB", MCKEY_NOACTION },
319 { KEY_M_ALT | KEY_RIGHT, ESC_STR ESC_STR "OC", MCKEY_NOACTION },
320 { KEY_M_ALT | KEY_LEFT, ESC_STR ESC_STR "OD", MCKEY_NOACTION },
321 { KEY_M_ALT | KEY_PPAGE, ESC_STR ESC_STR "[5~", MCKEY_NOACTION },
322 { KEY_M_ALT | KEY_NPAGE, ESC_STR ESC_STR "[6~", MCKEY_NOACTION },
323 { KEY_M_ALT | KEY_HOME, ESC_STR ESC_STR "[1~", MCKEY_NOACTION },
324 { KEY_M_ALT | KEY_END, ESC_STR ESC_STR "[4~", MCKEY_NOACTION },
325
326 { KEY_M_CTRL | KEY_M_ALT | KEY_UP, ESC_STR ESC_STR "[1;2A", MCKEY_NOACTION },
327 { KEY_M_CTRL | KEY_M_ALT | KEY_DOWN, ESC_STR ESC_STR "[1;2B", MCKEY_NOACTION },
328 { KEY_M_CTRL | KEY_M_ALT | KEY_RIGHT, ESC_STR ESC_STR "[1;2C", MCKEY_NOACTION },
329 { KEY_M_CTRL | KEY_M_ALT | KEY_LEFT, ESC_STR ESC_STR "[1;2D", MCKEY_NOACTION },
330
331 { KEY_M_CTRL | KEY_M_ALT | KEY_PPAGE, ESC_STR ESC_STR "[[5;5~", MCKEY_NOACTION },
332 { KEY_M_CTRL | KEY_M_ALT | KEY_NPAGE, ESC_STR ESC_STR "[[6;5~", MCKEY_NOACTION },
333 { KEY_M_CTRL | KEY_M_ALT | KEY_HOME, ESC_STR ESC_STR "[1;5H", MCKEY_NOACTION },
334 { KEY_M_CTRL | KEY_M_ALT | KEY_END, ESC_STR ESC_STR "[1;5F", MCKEY_NOACTION },
335 */
336 /* xterm alt-arrow keys */
337 {KEY_M_ALT | KEY_UP, ESC_STR "[1;3A", MCKEY_NOACTION},
338 {KEY_M_ALT | KEY_DOWN, ESC_STR "[1;3B", MCKEY_NOACTION},
339 {KEY_M_ALT | KEY_RIGHT, ESC_STR "[1;3C", MCKEY_NOACTION},
340 {KEY_M_ALT | KEY_LEFT, ESC_STR "[1;3D", MCKEY_NOACTION},
341 {KEY_M_ALT | KEY_PPAGE, ESC_STR "[5;3~", MCKEY_NOACTION},
342 {KEY_M_ALT | KEY_NPAGE, ESC_STR "[6;3~", MCKEY_NOACTION},
343 {KEY_M_ALT | KEY_HOME, ESC_STR "[1~", MCKEY_NOACTION},
344 {KEY_M_ALT | KEY_END, ESC_STR "[4~", MCKEY_NOACTION},
345 {KEY_M_CTRL | KEY_M_ALT | KEY_UP, ESC_STR "[1;7A", MCKEY_NOACTION},
346 {KEY_M_CTRL | KEY_M_ALT | KEY_DOWN, ESC_STR "[1;7B", MCKEY_NOACTION},
347 {KEY_M_CTRL | KEY_M_ALT | KEY_RIGHT, ESC_STR "[1;7C", MCKEY_NOACTION},
348 {KEY_M_CTRL | KEY_M_ALT | KEY_LEFT, ESC_STR "[1;7D", MCKEY_NOACTION},
349 {KEY_M_CTRL | KEY_M_ALT | KEY_PPAGE, ESC_STR "[5;7~", MCKEY_NOACTION},
350 {KEY_M_CTRL | KEY_M_ALT | KEY_NPAGE, ESC_STR "[6;7~", MCKEY_NOACTION},
351 {KEY_M_CTRL | KEY_M_ALT | KEY_HOME, ESC_STR "OH", MCKEY_NOACTION},
352 {KEY_M_CTRL | KEY_M_ALT | KEY_END, ESC_STR "OF", MCKEY_NOACTION},
353
354 /* rxvt keys with modifiers */
355 {KEY_M_SHIFT | KEY_UP, ESC_STR "[a", MCKEY_NOACTION},
356 {KEY_M_SHIFT | KEY_DOWN, ESC_STR "[b", MCKEY_NOACTION},
357 {KEY_M_SHIFT | KEY_RIGHT, ESC_STR "[c", MCKEY_NOACTION},
358 {KEY_M_SHIFT | KEY_LEFT, ESC_STR "[d", MCKEY_NOACTION},
359 {KEY_M_CTRL | KEY_UP, ESC_STR "Oa", MCKEY_NOACTION},
360 {KEY_M_CTRL | KEY_DOWN, ESC_STR "Ob", MCKEY_NOACTION},
361 {KEY_M_CTRL | KEY_RIGHT, ESC_STR "Oc", MCKEY_NOACTION},
362 {KEY_M_CTRL | KEY_LEFT, ESC_STR "Od", MCKEY_NOACTION},
363 {KEY_M_CTRL | KEY_PPAGE, ESC_STR "[5^", MCKEY_NOACTION},
364 {KEY_M_CTRL | KEY_NPAGE, ESC_STR "[6^", MCKEY_NOACTION},
365 {KEY_M_CTRL | KEY_HOME, ESC_STR "[7^", MCKEY_NOACTION},
366 {KEY_M_CTRL | KEY_END, ESC_STR "[8^", MCKEY_NOACTION},
367 {KEY_M_SHIFT | KEY_HOME, ESC_STR "[7$", MCKEY_NOACTION},
368 {KEY_M_SHIFT | KEY_END, ESC_STR "[8$", MCKEY_NOACTION},
369 {KEY_M_CTRL | KEY_IC, ESC_STR "[2^", MCKEY_NOACTION},
370 {KEY_M_CTRL | KEY_DC, ESC_STR "[3^", MCKEY_NOACTION},
371 {KEY_M_SHIFT | KEY_DC, ESC_STR "[3$", MCKEY_NOACTION},
372
373 /* konsole keys with modifiers */
374 {KEY_M_SHIFT | KEY_HOME, ESC_STR "O2H", MCKEY_NOACTION},
375 {KEY_M_SHIFT | KEY_END, ESC_STR "O2F", MCKEY_NOACTION},
376
377 /* gnome-terminal */
378 {KEY_M_SHIFT | KEY_UP, ESC_STR "[2A", MCKEY_NOACTION},
379 {KEY_M_SHIFT | KEY_DOWN, ESC_STR "[2B", MCKEY_NOACTION},
380 {KEY_M_SHIFT | KEY_RIGHT, ESC_STR "[2C", MCKEY_NOACTION},
381 {KEY_M_SHIFT | KEY_LEFT, ESC_STR "[2D", MCKEY_NOACTION},
382 {KEY_M_CTRL | KEY_UP, ESC_STR "[5A", MCKEY_NOACTION},
383 {KEY_M_CTRL | KEY_DOWN, ESC_STR "[5B", MCKEY_NOACTION},
384 {KEY_M_CTRL | KEY_RIGHT, ESC_STR "[5C", MCKEY_NOACTION},
385 {KEY_M_CTRL | KEY_LEFT, ESC_STR "[5D", MCKEY_NOACTION},
386 {KEY_M_SHIFT | KEY_M_CTRL | KEY_UP, ESC_STR "[6A", MCKEY_NOACTION},
387 {KEY_M_SHIFT | KEY_M_CTRL | KEY_DOWN, ESC_STR "[6B", MCKEY_NOACTION},
388 {KEY_M_SHIFT | KEY_M_CTRL | KEY_RIGHT, ESC_STR "[6C", MCKEY_NOACTION},
389 {KEY_M_SHIFT | KEY_M_CTRL | KEY_LEFT, ESC_STR "[6D", MCKEY_NOACTION},
390
391 /* gnome-terminal - application mode */
392 {KEY_M_CTRL | KEY_UP, ESC_STR "O5A", MCKEY_NOACTION},
393 {KEY_M_CTRL | KEY_DOWN, ESC_STR "O5B", MCKEY_NOACTION},
394 {KEY_M_CTRL | KEY_RIGHT, ESC_STR "O5C", MCKEY_NOACTION},
395 {KEY_M_CTRL | KEY_LEFT, ESC_STR "O5D", MCKEY_NOACTION},
396 {KEY_M_SHIFT | KEY_M_CTRL | KEY_UP, ESC_STR "O6A", MCKEY_NOACTION},
397 {KEY_M_SHIFT | KEY_M_CTRL | KEY_DOWN, ESC_STR "O6B", MCKEY_NOACTION},
398 {KEY_M_SHIFT | KEY_M_CTRL | KEY_RIGHT, ESC_STR "O6C", MCKEY_NOACTION},
399 {KEY_M_SHIFT | KEY_M_CTRL | KEY_LEFT, ESC_STR "O6D", MCKEY_NOACTION},
400
401 /* iTerm */
402 {KEY_M_SHIFT | KEY_PPAGE, ESC_STR "[5;2~", MCKEY_NOACTION},
403 {KEY_M_SHIFT | KEY_NPAGE, ESC_STR "[6;2~", MCKEY_NOACTION},
404
405 /* putty */
406 {KEY_M_SHIFT | KEY_PPAGE, ESC_STR "[[5;53~", MCKEY_NOACTION},
407 {KEY_M_SHIFT | KEY_NPAGE, ESC_STR "[[6;53~", MCKEY_NOACTION},
408
409 /* keypad keys */
410 {KEY_IC, ESC_STR "Op", MCKEY_NOACTION},
411 {KEY_DC, ESC_STR "On", MCKEY_NOACTION},
412 {'/', ESC_STR "Oo", MCKEY_NOACTION},
413 {'\n', ESC_STR "OM", MCKEY_NOACTION},
414
415 {0, NULL, MCKEY_NOACTION},
416 };
417
418 /* qansi-m terminals have a much more key combinatios,
419 which are undefined in termcap/terminfo */
420 static key_define_t qansi_key_defines[] = {
421 /* qansi-m terminal */
422 {KEY_M_CTRL | KEY_NPAGE, ESC_STR "[u", MCKEY_NOACTION}, /* Ctrl-PgDown */
423 {KEY_M_CTRL | KEY_PPAGE, ESC_STR "[v", MCKEY_NOACTION}, /* Ctrl-PgUp */
424 {KEY_M_CTRL | KEY_HOME, ESC_STR "[h", MCKEY_NOACTION}, /* Ctrl-Home */
425 {KEY_M_CTRL | KEY_END, ESC_STR "[y", MCKEY_NOACTION}, /* Ctrl-End */
426 {KEY_M_CTRL | KEY_IC, ESC_STR "[`", MCKEY_NOACTION}, /* Ctrl-Insert */
427 {KEY_M_CTRL | KEY_DC, ESC_STR "[p", MCKEY_NOACTION}, /* Ctrl-Delete */
428 {KEY_M_CTRL | KEY_LEFT, ESC_STR "[d", MCKEY_NOACTION}, /* Ctrl-Left */
429 {KEY_M_CTRL | KEY_RIGHT, ESC_STR "[c", MCKEY_NOACTION}, /* Ctrl-Right */
430 {KEY_M_CTRL | KEY_DOWN, ESC_STR "[b", MCKEY_NOACTION}, /* Ctrl-Down */
431 {KEY_M_CTRL | KEY_UP, ESC_STR "[a", MCKEY_NOACTION}, /* Ctrl-Up */
432 {KEY_M_CTRL | KEY_KP_ADD, ESC_STR "[s", MCKEY_NOACTION}, /* Ctrl-Gr-Plus */
433 {KEY_M_CTRL | KEY_KP_SUBTRACT, ESC_STR "[t", MCKEY_NOACTION}, /* Ctrl-Gr-Minus */
434 {KEY_M_CTRL | '\t', ESC_STR "[z", MCKEY_NOACTION}, /* Ctrl-Tab */
435 {KEY_M_SHIFT | '\t', ESC_STR "[Z", MCKEY_NOACTION}, /* Shift-Tab */
436 {KEY_M_CTRL | KEY_F (1), ESC_STR "[1~", MCKEY_NOACTION}, /* Ctrl-F1 */
437 {KEY_M_CTRL | KEY_F (2), ESC_STR "[2~", MCKEY_NOACTION}, /* Ctrl-F2 */
438 {KEY_M_CTRL | KEY_F (3), ESC_STR "[3~", MCKEY_NOACTION}, /* Ctrl-F3 */
439 {KEY_M_CTRL | KEY_F (4), ESC_STR "[4~", MCKEY_NOACTION}, /* Ctrl-F4 */
440 {KEY_M_CTRL | KEY_F (5), ESC_STR "[5~", MCKEY_NOACTION}, /* Ctrl-F5 */
441 {KEY_M_CTRL | KEY_F (6), ESC_STR "[6~", MCKEY_NOACTION}, /* Ctrl-F6 */
442 {KEY_M_CTRL | KEY_F (7), ESC_STR "[7~", MCKEY_NOACTION}, /* Ctrl-F7 */
443 {KEY_M_CTRL | KEY_F (8), ESC_STR "[8~", MCKEY_NOACTION}, /* Ctrl-F8 */
444 {KEY_M_CTRL | KEY_F (9), ESC_STR "[9~", MCKEY_NOACTION}, /* Ctrl-F9 */
445 {KEY_M_CTRL | KEY_F (10), ESC_STR "[10~", MCKEY_NOACTION}, /* Ctrl-F10 */
446 {KEY_M_CTRL | KEY_F (11), ESC_STR "[11~", MCKEY_NOACTION}, /* Ctrl-F11 */
447 {KEY_M_CTRL | KEY_F (12), ESC_STR "[12~", MCKEY_NOACTION}, /* Ctrl-F12 */
448 {KEY_M_ALT | KEY_F (1), ESC_STR "[17~", MCKEY_NOACTION}, /* Alt-F1 */
449 {KEY_M_ALT | KEY_F (2), ESC_STR "[18~", MCKEY_NOACTION}, /* Alt-F2 */
450 {KEY_M_ALT | KEY_F (3), ESC_STR "[19~", MCKEY_NOACTION}, /* Alt-F3 */
451 {KEY_M_ALT | KEY_F (4), ESC_STR "[20~", MCKEY_NOACTION}, /* Alt-F4 */
452 {KEY_M_ALT | KEY_F (5), ESC_STR "[21~", MCKEY_NOACTION}, /* Alt-F5 */
453 {KEY_M_ALT | KEY_F (6), ESC_STR "[22~", MCKEY_NOACTION}, /* Alt-F6 */
454 {KEY_M_ALT | KEY_F (7), ESC_STR "[23~", MCKEY_NOACTION}, /* Alt-F7 */
455 {KEY_M_ALT | KEY_F (8), ESC_STR "[24~", MCKEY_NOACTION}, /* Alt-F8 */
456 {KEY_M_ALT | KEY_F (9), ESC_STR "[25~", MCKEY_NOACTION}, /* Alt-F9 */
457 {KEY_M_ALT | KEY_F (10), ESC_STR "[26~", MCKEY_NOACTION}, /* Alt-F10 */
458 {KEY_M_ALT | KEY_F (11), ESC_STR "[27~", MCKEY_NOACTION}, /* Alt-F11 */
459 {KEY_M_ALT | KEY_F (12), ESC_STR "[28~", MCKEY_NOACTION}, /* Alt-F12 */
460 {KEY_M_ALT | 'a', ESC_STR "Na", MCKEY_NOACTION}, /* Alt-a */
461 {KEY_M_ALT | 'b', ESC_STR "Nb", MCKEY_NOACTION}, /* Alt-b */
462 {KEY_M_ALT | 'c', ESC_STR "Nc", MCKEY_NOACTION}, /* Alt-c */
463 {KEY_M_ALT | 'd', ESC_STR "Nd", MCKEY_NOACTION}, /* Alt-d */
464 {KEY_M_ALT | 'e', ESC_STR "Ne", MCKEY_NOACTION}, /* Alt-e */
465 {KEY_M_ALT | 'f', ESC_STR "Nf", MCKEY_NOACTION}, /* Alt-f */
466 {KEY_M_ALT | 'g', ESC_STR "Ng", MCKEY_NOACTION}, /* Alt-g */
467 {KEY_M_ALT | 'h', ESC_STR "Nh", MCKEY_NOACTION}, /* Alt-h */
468 {KEY_M_ALT | 'i', ESC_STR "Ni", MCKEY_NOACTION}, /* Alt-i */
469 {KEY_M_ALT | 'j', ESC_STR "Nj", MCKEY_NOACTION}, /* Alt-j */
470 {KEY_M_ALT | 'k', ESC_STR "Nk", MCKEY_NOACTION}, /* Alt-k */
471 {KEY_M_ALT | 'l', ESC_STR "Nl", MCKEY_NOACTION}, /* Alt-l */
472 {KEY_M_ALT | 'm', ESC_STR "Nm", MCKEY_NOACTION}, /* Alt-m */
473 {KEY_M_ALT | 'n', ESC_STR "Nn", MCKEY_NOACTION}, /* Alt-n */
474 {KEY_M_ALT | 'o', ESC_STR "No", MCKEY_NOACTION}, /* Alt-o */
475 {KEY_M_ALT | 'p', ESC_STR "Np", MCKEY_NOACTION}, /* Alt-p */
476 {KEY_M_ALT | 'q', ESC_STR "Nq", MCKEY_NOACTION}, /* Alt-q */
477 {KEY_M_ALT | 'r', ESC_STR "Nr", MCKEY_NOACTION}, /* Alt-r */
478 {KEY_M_ALT | 's', ESC_STR "Ns", MCKEY_NOACTION}, /* Alt-s */
479 {KEY_M_ALT | 't', ESC_STR "Nt", MCKEY_NOACTION}, /* Alt-t */
480 {KEY_M_ALT | 'u', ESC_STR "Nu", MCKEY_NOACTION}, /* Alt-u */
481 {KEY_M_ALT | 'v', ESC_STR "Nv", MCKEY_NOACTION}, /* Alt-v */
482 {KEY_M_ALT | 'w', ESC_STR "Nw", MCKEY_NOACTION}, /* Alt-w */
483 {KEY_M_ALT | 'x', ESC_STR "Nx", MCKEY_NOACTION}, /* Alt-x */
484 {KEY_M_ALT | 'y', ESC_STR "Ny", MCKEY_NOACTION}, /* Alt-y */
485 {KEY_M_ALT | 'z', ESC_STR "Nz", MCKEY_NOACTION}, /* Alt-z */
486 {KEY_KP_SUBTRACT, ESC_STR "[S", MCKEY_NOACTION}, /* Gr-Minus */
487 {KEY_KP_ADD, ESC_STR "[T", MCKEY_NOACTION}, /* Gr-Plus */
488 {0, NULL, MCKEY_NOACTION},
489 };
490
491 /* timeout for old_esc_mode in usec */
492 static int keyboard_key_timeout = 1000000; /* settable via env */
493
494 /* This holds all the key definitions */
495 static key_def *keys = NULL;
496
497 static int input_fd;
498 static int disabled_channels = 0; /* Disable channels checking */
499
500 static SelectList *select_list = NULL;
501
502 static int seq_buffer[SEQ_BUFFER_LEN];
503 static int *seq_append = NULL;
504
505 static int *pending_keys = NULL;
506
507 #ifdef __QNXNTO__
508 ph_dv_f ph_attach;
509 ph_ov_f ph_input_group;
510 ph_pqc_f ph_query_cursor;
511 #endif
512
513 #ifdef HAVE_TEXTMODE_X11_SUPPORT
514 static Display *x11_display;
515 static Window x11_window;
516 #endif /* HAVE_TEXTMODE_X11_SUPPORT */
517
518 /*** file scope functions **********************************************/
519
520 static int
521 add_selects (fd_set * select_set)
522 {
523 int top_fd = 0;
524
525 if (disabled_channels == 0) {
526 SelectList *p;
527
528 for (p = select_list; p != NULL; p = p->next) {
529 FD_SET (p->fd, select_set);
530 if (p->fd > top_fd)
531 top_fd = p->fd;
532 }
533 }
534
535 return top_fd;
536 }
537
538 static void
539 check_selects (fd_set * select_set)
540 {
541 if (disabled_channels == 0) {
542 gboolean retry;
543
544 do {
545 SelectList *p;
546
547 retry = FALSE;
548 for (p = select_list; p; p = p->next)
549 if (FD_ISSET (p->fd, select_set)) {
550 FD_CLR (p->fd, select_set);
551 (*p->callback) (p->fd, p->info);
552 retry = TRUE;
553 break;
554 }
555 } while (retry);
556 }
557 }
558
559 /* If set timeout is set, then we wait 0.1 seconds, else, we block */
560 static void
561 try_channels (int set_timeout)
562 {
563 struct timeval time_out;
564 static fd_set select_set;
565 struct timeval *timeptr;
566 int v;
567 int maxfdp;
568
569 while (1) {
570 FD_ZERO (&select_set);
571 FD_SET (input_fd, &select_set); /* Add stdin */
572 maxfdp = max (add_selects (&select_set), input_fd);
573
574 timeptr = NULL;
575 if (set_timeout) {
576 time_out.tv_sec = 0;
577 time_out.tv_usec = 100000;
578 timeptr = &time_out;
579 }
580
581 v = select (maxfdp + 1, &select_set, NULL, NULL, timeptr);
582 if (v > 0) {
583 check_selects (&select_set);
584 if (FD_ISSET (input_fd, &select_set))
585 break;
586 }
587 }
588 }
589
590 static key_def *
591 create_sequence (const char *seq, int code, int action)
592 {
593 key_def *base, *p, *attach;
594
595 for (base = attach = NULL; *seq; seq++) {
596 p = g_new (key_def, 1);
597 if (base == NULL)
598 base = p;
599 if (attach != NULL)
600 attach->child = p;
601
602 p->ch = *seq;
603 p->code = code;
604 p->child = p->next = NULL;
605 if (seq[1] == '\0')
606 p->action = action;
607 else
608 p->action = MCKEY_NOACTION;
609 attach = p;
610 }
611 return base;
612 }
613
614 static void
615 define_sequences (const key_define_t * kd)
616 {
617 int i;
618
619 for (i = 0; kd[i].code != 0; i++)
620 define_sequence (kd[i].code, kd[i].seq, kd[i].action);
621 }
622
623 static void
624 init_key_x11 (void)
625 {
626 #ifdef HAVE_TEXTMODE_X11_SUPPORT
627 if (getenv ("DISPLAY") != NULL) {
628 x11_display = mc_XOpenDisplay (0);
629
630 if (x11_display != NULL)
631 x11_window = DefaultRootWindow (x11_display);
632 }
633 #endif /* HAVE_TEXTMODE_X11_SUPPORT */
634 }
635
636 /* Workaround for System V Curses vt100 bug */
637 static int
638 getch_with_delay (void)
639 {
640 int c;
641
642 /* This routine could be used on systems without mouse support,
643 so we need to do the select check :-( */
644 while (1) {
645 if (pending_keys == NULL)
646 try_channels (0);
647
648 /* Try to get a character */
649 c = get_key_code (0);
650 if (c != -1)
651 break;
652 /* Failed -> wait 0.1 secs and try again */
653 try_channels (1);
654 }
655 /* Success -> return the character */
656 return c;
657 }
658
659 static void
660 xmouse_get_event (Gpm_Event * ev)
661 {
662 int btn;
663 static struct timeval tv1 = { 0, 0 }; /* Force first click as single */
664 static struct timeval tv2;
665 static int clicks = 0;
666 static int last_btn = 0;
667
668 /* Decode Xterm mouse information to a GPM style event */
669
670 /* Variable btn has following meaning: */
671 /* 0 = btn1 dn, 1 = btn2 dn, 2 = btn3 dn, 3 = btn up */
672 btn = tty_lowlevel_getch () - 32;
673
674 /* There seems to be no way of knowing which button was released */
675 /* So we assume all the buttons were released */
676
677 if (btn == 3) {
678 if (last_btn != 0) {
679 if ((last_btn & (GPM_B_UP | GPM_B_DOWN)) != 0) {
680 /* FIXME: DIRTY HACK */
681 /* don't generate GPM_UP after mouse wheel */
682 /* need for menu event handling */
683 ev->type = 0;
684 tv1.tv_sec = 0;
685 tv1.tv_usec = 0;
686 } else {
687 ev->type = GPM_UP | (GPM_SINGLE << clicks);
688 GET_TIME (tv1);
689 }
690 ev->buttons = 0;
691 last_btn = 0;
692 clicks = 0;
693 } else {
694 /* Bogus event, maybe mouse wheel */
695 ev->type = 0;
696 }
697 } else {
698 if (btn >= 32 && btn <= 34) {
699 btn -= 32;
700 ev->type = GPM_DRAG;
701 } else
702 ev->type = GPM_DOWN;
703
704 GET_TIME (tv2);
705 if (tv1.tv_sec && (DIF_TIME (tv1, tv2) < double_click_speed)) {
706 clicks++;
707 clicks %= 3;
708 } else
709 clicks = 0;
710
711 switch (btn) {
712 case 0:
713 ev->buttons = GPM_B_LEFT;
714 break;
715 case 1:
716 ev->buttons = GPM_B_MIDDLE;
717 break;
718 case 2:
719 ev->buttons = GPM_B_RIGHT;
720 break;
721 case 64:
722 ev->buttons = GPM_B_UP;
723 clicks = 0;
724 break;
725 case 65:
726 ev->buttons = GPM_B_DOWN;
727 clicks = 0;
728 break;
729 default:
730 /* Nothing */
731 ev->type = 0;
732 ev->buttons = 0;
733 break;
734 }
735 last_btn = ev->buttons;
736 }
737 /* Coordinates are 33-based */
738 /* Transform them to 1-based */
739 ev->x = tty_lowlevel_getch () - 32;
740 ev->y = tty_lowlevel_getch () - 32;
741 }
742
743 /*
744 * Get modifier state (shift, alt, ctrl) for the last key pressed.
745 * We are assuming that the state didn't change since the key press.
746 * This is only correct if get_modifier() is called very fast after
747 * the input was received, so that the user didn't release the
748 * modifier keys yet.
749 */
750 static int
751 get_modifier (void)
752 {
753 int result = 0;
754 #ifdef __QNXNTO__
755 int mod_status, shift_ext_status;
756 static int in_photon = 0;
757 static int ph_ig = 0;
758 PhCursorInfo_t cursor_info;
759 #endif /* __QNXNTO__ */
760
761 #ifdef HAVE_TEXTMODE_X11_SUPPORT
762 if (x11_window != 0) {
763 Window root, child;
764 int root_x, root_y;
765 int win_x, win_y;
766 unsigned int mask;
767
768 mc_XQueryPointer (x11_display, x11_window, &root, &child, &root_x,
769 &root_y, &win_x, &win_y, &mask);
770
771 if (mask & ShiftMask)
772 result |= KEY_M_SHIFT;
773 if (mask & ControlMask)
774 result |= KEY_M_CTRL;
775 return result;
776 }
777 #endif /* HAVE_TEXTMODE_X11_SUPPORT */
778 #ifdef __QNXNTO__
779
780 if (in_photon == 0) {
781 /* First time here, let's load Photon library and attach
782 to Photon */
783 in_photon = -1;
784 if (getenv ("PHOTON2_PATH") != NULL) {
785 /* QNX 6.x has no support for RTLD_LAZY */
786 void *ph_handle = dlopen ("/usr/lib/libph.so", RTLD_NOW);
787 if (ph_handle != NULL) {
788 ph_attach = (ph_dv_f) dlsym (ph_handle, "PhAttach");
789 ph_input_group = (ph_ov_f) dlsym (ph_handle, "PhInputGroup");
790 ph_query_cursor = (ph_pqc_f) dlsym (ph_handle, "PhQueryCursor");
791 if ((ph_attach != NULL) && (ph_input_group != NULL)
792 && (ph_query_cursor != NULL)) {
793 if ((*ph_attach) (0, 0)) { /* Attached */
794 ph_ig = (*ph_input_group) (0);
795 in_photon = 1;
796 }
797 }
798 }
799 }
800 }
801 /* We do not have Photon running. Assume we are in text
802 console or xterm */
803 if (in_photon == -1) {
804 if (devctl (fileno (stdin), DCMD_CHR_LINESTATUS, &mod_status, sizeof (int), NULL) == -1)
805 return 0;
806 shift_ext_status = mod_status & 0xffffff00UL;
807 mod_status &= 0x7f;
808 if (mod_status & _LINESTATUS_CON_ALT)
809 result |= KEY_M_ALT;
810 if (mod_status & _LINESTATUS_CON_CTRL)
811 result |= KEY_M_CTRL;
812 if ((mod_status & _LINESTATUS_CON_SHIFT)
813 || (shift_ext_status & 0x00000800UL))
814 result |= KEY_M_SHIFT;
815 } else {
816 (*ph_query_cursor) (ph_ig, &cursor_info);
817 if (cursor_info.key_mods & 0x04)
818 result |= KEY_M_ALT;
819 if (cursor_info.key_mods & 0x02)
820 result |= KEY_M_CTRL;
821 if (cursor_info.key_mods & 0x01)
822 result |= KEY_M_SHIFT;
823 }
824 #endif /* __QNXNTO__ */
825
826 #if defined __linux__ || (defined __CYGWIN__ && defined TIOCLINUX)
827 {
828 unsigned char modifiers = 6;
829
830 if (ioctl (0, TIOCLINUX, &modifiers) < 0)
831 return 0;
832
833 /* Translate Linux modifiers into mc modifiers */
834 if (modifiers & SHIFT_PRESSED)
835 result |= KEY_M_SHIFT;
836 if (modifiers & (ALTL_PRESSED | ALTR_PRESSED))
837 result |= KEY_M_ALT;
838 if (modifiers & CONTROL_PRESSED)
839 result |= KEY_M_CTRL;
840 }
841 #endif /* !__linux__ */
842 return result;
843 }
844
845 static gboolean
846 push_char (int c)
847 {
848 gboolean ret = FALSE;
849
850 if (seq_append == NULL)
851 seq_append = seq_buffer;
852
853 if (seq_append != &(seq_buffer[SEQ_BUFFER_LEN - 2])) {
854 *(seq_append++) = c;
855 *seq_append = 0;
856 ret = TRUE;
857 }
858
859 return ret;
860 }
861
862 /* Apply corrections for the keycode generated in get_key_code() */
863 static int
864 correct_key_code (int code)
865 {
866 unsigned int c = code & ~KEY_M_MASK; /* code without modifier */
867 unsigned int mod = code & KEY_M_MASK; /* modifier */
868 #ifdef __QNXNTO__
869 unsigned int qmod; /* bunch of the QNX console
870 modifiers needs unchanged */
871 #endif /* __QNXNTO__ */
872
873 /*
874 * Add key modifiers directly from X11 or OS.
875 * Ordinary characters only get modifiers from sequences.
876 */
877 if (c < 32 || c >= 256) {
878 mod |= get_modifier ();
879 }
880
881 /* This is needed if the newline is reported as carriage return */
882 if (c == '\r')
883 c = '\n';
884
885 /* This is reported to be useful on AIX */
886 if (c == KEY_SCANCEL)
887 c = '\t';
888
889 /* Convert Shift+Tab and Ctrl+Tab to Back Tab */
890 if ((c == '\t') && (mod & (KEY_M_SHIFT | KEY_M_CTRL))) {
891 c = KEY_BTAB;
892 mod = 0;
893 }
894
895 /* F0 is the same as F10 for out purposes */
896 if (c == KEY_F (0))
897 c = KEY_F (10);
898
899 /*
900 * We are not interested if Ctrl was pressed when entering control
901 * characters, so assume that it was. When checking for such keys,
902 * XCTRL macro should be used. In some cases, we are interested,
903 * e.g. to distinguish Ctrl-Enter from Enter.
904 */
905 if (c < 32 && c != ESC_CHAR && c != '\t' && c != '\n') {
906 mod |= KEY_M_CTRL;
907 }
908 #ifdef __QNXNTO__
909 qmod = get_modifier ();
910
911 if ((c == 127) && (mod == 0)) { /* Add Ctrl/Alt/Shift-BackSpace */
912 mod |= get_modifier ();
913 c = KEY_BACKSPACE;
914 }
915
916 if ((c == '0') && (mod == 0)) { /* Add Shift-Insert on key pad */
917 if ((qmod & KEY_M_SHIFT) == KEY_M_SHIFT) {
918 mod = KEY_M_SHIFT;
919 c = KEY_IC;
920 }
921 }
922
923 if ((c == '.') && (mod == 0)) { /* Add Shift-Del on key pad */
924 if ((qmod & KEY_M_SHIFT) == KEY_M_SHIFT) {
925 mod = KEY_M_SHIFT;
926 c = KEY_DC;
927 }
928 }
929 #endif /* __QNXNTO__ */
930
931 /* Unrecognized 0177 is delete (preserve Ctrl) */
932 if (c == 0177) {
933 c = KEY_BACKSPACE;
934 }
935
936 /* Unrecognized Ctrl-d is delete */
937 if (c == (31 & 'd')) {
938 c = KEY_DC;
939 mod &= ~KEY_M_CTRL;
940 }
941
942 /* Unrecognized Ctrl-h is backspace */
943 if (c == (31 & 'h')) {
944 c = KEY_BACKSPACE;
945 mod &= ~KEY_M_CTRL;
946 }
947
948 /* Shift+BackSpace is backspace */
949 if (c == KEY_BACKSPACE && (mod & KEY_M_SHIFT)) {
950 mod &= ~KEY_M_SHIFT;
951 }
952
953 /* Convert Shift+Fn to F(n+10) */
954 if (c >= KEY_F (1) && c <= KEY_F (10) && (mod & KEY_M_SHIFT)) {
955 c += 10;
956 }
957
958 /* Remove Shift information from function keys */
959 if (c >= KEY_F (1) && c <= KEY_F (20)) {
960 mod &= ~KEY_M_SHIFT;
961 }
962
963 if (!alternate_plus_minus)
964 switch (c) {
965 case KEY_KP_ADD:
966 c = '+';
967 break;
968 case KEY_KP_SUBTRACT:
969 c = '-';
970 break;
971 case KEY_KP_MULTIPLY:
972 c = '*';
973 break;
974 }
975
976 return (mod | c);
977 }
978
979 static int
980 xgetch_second (void)
981 {
982 fd_set Read_FD_Set;
983 int c;
984 struct timeval time_out;
985
986 time_out.tv_sec = keyboard_key_timeout / 1000000;
987 time_out.tv_usec = keyboard_key_timeout % 1000000;
988 tty_nodelay (TRUE);
989 FD_ZERO (&Read_FD_Set);
990 FD_SET (input_fd, &Read_FD_Set);
991 select (input_fd + 1, &Read_FD_Set, NULL, NULL, &time_out);
992 c = tty_lowlevel_getch ();
993 tty_nodelay (FALSE);
994 return c;
995 }
996
997 static void
998 learn_store_key (char *buffer, char **p, int c)
999 {
1000 if (*p - buffer > 253)
1001 return;
1002 if (c == ESC_CHAR) {
1003 *(*p)++ = '\\';
1004 *(*p)++ = 'e';
1005 } else if (c < ' ') {
1006 *(*p)++ = '^';
1007 *(*p)++ = c + 'a' - 1;
1008 } else if (c == '^') {
1009 *(*p)++ = '^';
1010 *(*p)++ = '^';
1011 } else
1012 *(*p)++ = (char) c;
1013 }
1014
1015 static void
1016 k_dispose (key_def * k)
1017 {
1018 if (k != NULL) {
1019 k_dispose (k->child);
1020 k_dispose (k->next);
1021 g_free (k);
1022 }
1023 }
1024
1025 static void
1026 s_dispose (SelectList * sel)
1027 {
1028 if (sel != NULL) {
1029 s_dispose (sel->next);
1030 g_free (sel);
1031 }
1032 }
1033
1034 /*** public functions **************************************************/
1035
1036 /* This has to be called before init_slang or whatever routine
1037 calls any define_sequence */
1038 void
1039 init_key (void)
1040 {
1041 const char *term = getenv ("TERM");
1042 const char *kt = getenv ("KEYBOARD_KEY_TIMEOUT_US");
1043 if (kt != NULL)
1044 keyboard_key_timeout = atoi (kt);
1045
1046 /* This has to be the first define_sequence */
1047 /* So, we can assume that the first keys member has ESC */
1048 define_sequences (mc_default_keys);
1049
1050 /* Terminfo on irix does not have some keys */
1051 if (xterm_flag
1052 || (term != NULL
1053 && (strncmp (term, "iris-ansi", 9) == 0
1054 || strncmp (term, "xterm", 5) == 0
1055 || strncmp (term, "rxvt", 4) == 0 || strcmp (term, "screen") == 0)))
1056 define_sequences (xterm_key_defines);
1057
1058 /* load some additional keys (e.g. direct Alt-? support) */
1059 load_xtra_key_defines ();
1060
1061 #ifdef __QNX__
1062 if ((term != NULL) && (strncmp (term, "qnx", 3) == 0)) {
1063 /* Modify the default value of use_8th_bit_as_meta: we would
1064 * like to provide a working mc for a newbie who knows nothing
1065 * about [Options|Display bits|Full 8 bits input]...
1066 *
1067 * Don't use 'meta'-bit, when we are dealing with a
1068 * 'qnx*'-type terminal: clear the default value!
1069 * These terminal types use 0xFF as an escape character,
1070 * so use_8th_bit_as_meta==1 must not be enabled!
1071 *
1072 * [mc-4.1.21+,slint.c/getch(): the DEC_8BIT_HACK stuff
1073 * is not used now (doesn't even depend on use_8th_bit_as_meta
1074 * as in mc-3.1.2)...GREAT!...no additional code is required!]
1075 */
1076 use_8th_bit_as_meta = 0;
1077 }
1078 #endif /* __QNX__ */
1079
1080 init_key_x11 ();
1081
1082 /* Load the qansi-m key definitions
1083 if we are running under the qansi-m terminal */
1084 if (term != NULL && (strncmp (term, "qansi-m", 7) == 0))
1085 define_sequences (qansi_key_defines);
1086 }
1087
1088 /* This has to be called after SLang_init_tty/slint_init */
1089 void
1090 init_key_input_fd (void)
1091 {
1092 #ifdef HAVE_SLANG
1093 input_fd = SLang_TT_Read_FD;
1094 #endif
1095 }
1096
1097 void
1098 done_key (void)
1099 {
1100 k_dispose (keys);
1101 s_dispose (select_list);
1102
1103 #ifdef HAVE_TEXTMODE_X11_SUPPORT
1104 if (x11_display)
1105 mc_XCloseDisplay (x11_display);
1106 #endif
1107 }
1108
1109 void
1110 add_select_channel (int fd, select_fn callback, void *info)
1111 {
1112 SelectList *new;
1113
1114 new = g_new (SelectList, 1);
1115 new->fd = fd;
1116 new->callback = callback;
1117 new->info = info;
1118 new->next = select_list;
1119 select_list = new;
1120 }
1121
1122 void
1123 delete_select_channel (int fd)
1124 {
1125 SelectList *p = select_list;
1126 SelectList *p_prev = NULL;
1127 SelectList *p_next;
1128
1129 while (p != NULL)
1130 if (p->fd == fd) {
1131 p_next = p->next;
1132
1133 if (p_prev != NULL)
1134 p_prev->next = p_next;
1135 else
1136 select_list = p_next;
1137
1138 g_free (p);
1139 p = p_next;
1140 } else {
1141 p_prev = p;
1142 p = p->next;
1143 }
1144 }
1145
1146 void
1147 channels_up (void)
1148 {
1149 if (disabled_channels == 0)
1150 fputs ("Error: channels_up called with disabled_channels = 0\n", stderr);
1151 disabled_channels--;
1152 }
1153
1154 void
1155 channels_down (void)
1156 {
1157 disabled_channels++;
1158 }
1159
1160 /*
1161 * Common handler for standard movement keys in a text area. Provided
1162 * functions are called with the "data" argument. backfn and forfn also
1163 * get an argument indicating how many lines to scroll. Return MSG_HANDLED
1164 * if the key was handled, MSG_NOT_HANDLED otherwise.
1165 */
1166 cb_ret_t
1167 check_movement_keys (int key, int page_size, void *data, move_fn backfn,
1168 move_fn forfn, move_fn topfn, move_fn bottomfn)
1169 {
1170 switch (key) {
1171 case KEY_UP:
1172 case XCTRL ('p'):
1173 (*backfn) (data, 1);
1174 break;
1175
1176 case KEY_DOWN:
1177 case XCTRL ('n'):
1178 (*forfn) (data, 1);
1179 break;
1180
1181 case KEY_PPAGE:
1182 case ALT ('v'):
1183 (*backfn) (data, page_size - 1);
1184 break;
1185
1186 case KEY_NPAGE:
1187 case XCTRL ('v'):
1188 (*forfn) (data, page_size - 1);
1189 break;
1190
1191 case KEY_HOME:
1192 case KEY_M_CTRL | KEY_HOME:
1193 case KEY_M_CTRL | KEY_PPAGE:
1194 case KEY_A1:
1195 case ALT ('<'):
1196 (*topfn) (data, 0);
1197 break;
1198
1199 case KEY_END:
1200 case KEY_M_CTRL | KEY_END:
1201 case KEY_M_CTRL | KEY_NPAGE:
1202 case KEY_C1:
1203 case ALT ('>'):
1204 (*bottomfn) (data, 0);
1205 break;
1206
1207 case 'b':
1208 case KEY_BACKSPACE:
1209 (*backfn) (data, page_size - 1);
1210 break;
1211
1212 case ' ':
1213 (*forfn) (data, page_size - 1);
1214 break;
1215
1216 case 'u':
1217 (*backfn) (data, page_size / 2);
1218 break;
1219
1220 case 'd':
1221 (*forfn) (data, page_size / 2);
1222 break;
1223
1224 case 'g':
1225 (*topfn) (data, 0);
1226 break;
1227
1228 case 'G':
1229 (*bottomfn) (data, 0);
1230 break;
1231
1232 default:
1233 return MSG_NOT_HANDLED;
1234 }
1235 return MSG_HANDLED;
1236 }
1237
1238
1239 static const size_t key_name_conv_tab_size = sizeof (key_name_conv_tab) /
1240 sizeof (key_name_conv_tab[0]) - 1;
1241 static const key_code_name_t *key_name_conv_tab_sorted[sizeof (key_name_conv_tab) /
1242 sizeof (key_name_conv_tab[0]) - 1];
1243
1244 static int
1245 key_code_name_comparator (const void *p1, const void *p2)
1246 {
1247 const key_code_name_t *n1 = *(const key_code_name_t **) p1;
1248 const key_code_name_t *n2 = *(const key_code_name_t **) p2;
1249
1250 return str_casecmp (n1->name, n2->name);
1251 }
1252
1253 static inline void
1254 sort_key_name_conv_tab (void)
1255 {
1256 static gboolean has_been_sorted = FALSE;
1257
1258 if (!has_been_sorted) {
1259 size_t i;
1260 for (i = 0; i < key_name_conv_tab_size; i++)
1261 key_name_conv_tab_sorted[i] = &key_name_conv_tab[i];
1262
1263 qsort (key_name_conv_tab_sorted,
1264 key_name_conv_tab_size, sizeof (key_name_conv_tab_sorted[0]),
1265 &key_code_name_comparator);
1266 has_been_sorted = TRUE;
1267 }
1268 }
1269
1270 static int
1271 lookup_keyname (const char *name, int *idx)
1272 {
1273 if (name[0] != '\0') {
1274 const key_code_name_t key = { 0, name, NULL, NULL };
1275 const key_code_name_t *keyp = &key;
1276 key_code_name_t **res;
1277
1278 if (name[1] == '\0') {
1279 *idx = -1;
1280 return (int) name[0];
1281 }
1282
1283 sort_key_name_conv_tab ();
1284
1285 res = bsearch (&keyp, key_name_conv_tab_sorted,
1286 key_name_conv_tab_size,
1287 sizeof (key_name_conv_tab_sorted[0]),
1288 key_code_name_comparator);
1289
1290 if (res != NULL) {
1291 *idx = (int) (res - (key_code_name_t **) key_name_conv_tab_sorted);
1292 return (*res)->code;
1293 }
1294 }
1295
1296 *idx = -1;
1297 return 0;
1298 }
1299
1300 /* Return the code associated with the symbolic name keyname */
1301 long
1302 lookup_key (const char *name, char **label)
1303 {
1304 char **lc_keys, **p;
1305 int k = -1;
1306 int key = 0;
1307 int lc_index = -1;
1308
1309 int use_meta = -1;
1310 int use_ctrl = -1;
1311 int use_shift = -1;
1312
1313 if (name == NULL)
1314 return 0;
1315
1316 name = g_strstrip (g_strdup (name));
1317 p = lc_keys = g_strsplit_set (name, "-+ ", -1);
1318 g_free ((char *) name);
1319
1320 while ((p != NULL) && (*p != NULL)) {
1321 if ((*p)[0] != '\0') {
1322 int idx;
1323
1324 key = lookup_keyname (g_strstrip (*p), &idx);
1325
1326 if (key == KEY_M_ALT)
1327 use_meta = idx;
1328 else if (key == KEY_M_CTRL)
1329 use_ctrl = idx;
1330 else if (key == KEY_M_SHIFT)
1331 use_shift = idx;
1332 else {
1333 k = key;
1334 lc_index = idx;
1335 break;
1336 }
1337 }
1338
1339 p++;
1340 }
1341
1342 g_strfreev (lc_keys);
1343
1344 /* output */
1345 if (k <= 0)
1346 return 0;
1347
1348
1349 if (label != NULL) {
1350 GString *s;
1351
1352 s = g_string_new ("");
1353
1354 if (use_meta != -1) {
1355 g_string_append (s, key_name_conv_tab_sorted[use_meta]->shortcut);
1356 g_string_append_c (s, '-');
1357 }
1358 if (use_ctrl != -1) {
1359 g_string_append (s, key_name_conv_tab_sorted[use_ctrl]->shortcut);
1360 g_string_append_c (s, '-');
1361 }
1362 if (use_shift != -1) {
1363 if (k < 127)
1364 g_string_append_c (s, (gchar) g_ascii_toupper ((gchar) k));
1365 else {
1366 g_string_append (s, key_name_conv_tab_sorted[use_shift]->shortcut);
1367 g_string_append_c (s, '-');
1368 g_string_append (s, key_name_conv_tab_sorted[lc_index]->shortcut);
1369 }
1370 } else if (k < 128) {
1371 if ((k >= 'A') || (lc_index < 0)
1372 || (key_name_conv_tab_sorted[lc_index]->shortcut == NULL))
1373 g_string_append_c (s, (gchar) g_ascii_tolower ((gchar) k));
1374 else
1375 g_string_append (s, key_name_conv_tab_sorted[lc_index]->shortcut);
1376 } else if ((lc_index != -1) && (key_name_conv_tab_sorted[lc_index]->shortcut != NULL))
1377 g_string_append (s, key_name_conv_tab_sorted[lc_index]->shortcut);
1378 else
1379 g_string_append_c (s, (gchar) g_ascii_tolower ((gchar) key));
1380
1381 *label = g_string_free (s, FALSE);
1382 }
1383
1384 if (use_shift != -1) {
1385 if (k < 127 && k > 31 )
1386 k = g_ascii_toupper ((gchar) k);
1387 else
1388 k |= KEY_M_SHIFT;
1389 }
1390
1391 if (use_ctrl != -1) {
1392 if (k < 256)
1393 k = XCTRL (k);
1394 else
1395 k |= KEY_M_CTRL;
1396 }
1397
1398 if (use_meta != -1)
1399 k = ALT (k);
1400
1401 return (long) k;
1402 }
1403
1404 /*
1405 * Return TRUE on success, FALSE on error.
1406 * An error happens if SEQ is a beginning of an existing longer sequence.
1407 */
1408 gboolean
1409 define_sequence (int code, const char *seq, int action)
1410 {
1411 key_def *base;
1412
1413 if (strlen (seq) > SEQ_BUFFER_LEN - 1)
1414 return FALSE;
1415
1416 for (base = keys; (base != NULL) && (*seq != '\0');)
1417 if (*seq == base->ch) {
1418 if (base->child == 0) {
1419 if (*(seq + 1) != '\0')
1420 base->child = create_sequence (seq + 1, code, action);
1421 else {
1422 /* The sequence matches an existing one. */
1423 base->code = code;
1424 base->action = action;
1425 }
1426 return TRUE;
1427 }
1428
1429 base = base->child;
1430 seq++;
1431 } else {
1432 if (base->next)
1433 base = base->next;
1434 else {
1435 base->next = create_sequence (seq, code, action);
1436 return TRUE;
1437 }
1438 }
1439
1440 if (*seq == '\0') {
1441 /* Attempt to redefine a sequence with a shorter sequence. */
1442 return FALSE;
1443 }
1444
1445 keys = create_sequence (seq, code, action);
1446 return TRUE;
1447 }
1448
1449 /*
1450 * Check if we are idle, i.e. there are no pending keyboard or mouse
1451 * events. Return 1 is idle, 0 is there are pending events.
1452 */
1453 gboolean
1454 is_idle (void)
1455 {
1456 int maxfdp;
1457 fd_set select_set;
1458 struct timeval time_out;
1459
1460 FD_ZERO (&select_set);
1461 FD_SET (input_fd, &select_set);
1462 maxfdp = input_fd;
1463 #ifdef HAVE_LIBGPM
1464 if (mouse_enabled && (use_mouse_p == MOUSE_GPM) && (gpm_fd > 0)) {
1465 FD_SET (gpm_fd, &select_set);
1466 maxfdp = max (maxfdp, gpm_fd);
1467 }
1468 #endif
1469 time_out.tv_sec = 0;
1470 time_out.tv_usec = 0;
1471 return (select (maxfdp + 1, &select_set, 0, 0, &time_out) <= 0);
1472 }
1473
1474 int
1475 get_key_code (int no_delay)
1476 {
1477 int c;
1478 static key_def *this = NULL, *parent;
1479 static struct timeval esctime = { -1, -1 };
1480 static int lastnodelay = -1;
1481
1482 if (no_delay != lastnodelay) {
1483 this = NULL;
1484 lastnodelay = no_delay;
1485 }
1486
1487 pend_send:
1488 if (pending_keys != NULL) {
1489 int d = *pending_keys++;
1490 check_pend:
1491 if (*pending_keys == 0) {
1492 pending_keys = NULL;
1493 seq_append = NULL;
1494 }
1495 if ((d == ESC_CHAR) && (pending_keys != NULL)) {
1496 d = ALT (*pending_keys++);
1497 goto check_pend;
1498 }
1499 if ((d > 127 && d < 256) && use_8th_bit_as_meta)
1500 d = ALT (d & 0x7f);
1501 this = NULL;
1502 return correct_key_code (d);
1503 }
1504
1505 nodelay_try_again:
1506 if (no_delay)
1507 tty_nodelay (TRUE);
1508
1509 c = tty_lowlevel_getch ();
1510 #if (defined(USE_NCURSES) || defined(USE_NCURSESW)) && defined(KEY_RESIZE)
1511 if (c == KEY_RESIZE)
1512 goto nodelay_try_again;
1513 #endif
1514 if (no_delay) {
1515 tty_nodelay (FALSE);
1516 if (c == -1) {
1517 if (this != NULL && parent != NULL && parent->action == MCKEY_ESCAPE && old_esc_mode) {
1518 struct timeval current, time_out;
1519
1520 if (esctime.tv_sec == -1)
1521 return -1;
1522 GET_TIME (current);
1523 time_out.tv_sec = keyboard_key_timeout / 1000000 + esctime.tv_sec;
1524 time_out.tv_usec = keyboard_key_timeout % 1000000 + esctime.tv_usec;
1525 if (time_out.tv_usec > 1000000) {
1526 time_out.tv_usec -= 1000000;
1527 time_out.tv_sec++;
1528 }
1529 if (current.tv_sec < time_out.tv_sec)
1530 return -1;
1531 if (current.tv_sec == time_out.tv_sec && current.tv_usec < time_out.tv_usec)
1532 return -1;
1533 this = NULL;
1534 pending_keys = seq_append = NULL;
1535 return ESC_CHAR;
1536 }
1537 return -1;
1538 }
1539 } else if (c == -1) {
1540 /* Maybe we got an incomplete match.
1541 This we do only in delay mode, since otherwise
1542 tty_lowlevel_getch can return -1 at any time. */
1543 if (seq_append != NULL) {
1544 pending_keys = seq_buffer;
1545 goto pend_send;
1546 }
1547 this = NULL;
1548 return -1;
1549 }
1550
1551 /* Search the key on the root */
1552 if (!no_delay || this == NULL) {
1553 this = keys;
1554 parent = NULL;
1555
1556 if ((c > 127 && c < 256) && use_8th_bit_as_meta) {
1557 c &= 0x7f;
1558
1559 /* The first sequence defined starts with esc */
1560 parent = keys;
1561 this = keys->child;
1562 }
1563 }
1564 while (this != NULL) {
1565 if (c == this->ch) {
1566 if (this->child) {
1567 if (!push_char (c)) {
1568 pending_keys = seq_buffer;
1569 goto pend_send;
1570 }
1571 parent = this;
1572 this = this->child;
1573 if (parent->action == MCKEY_ESCAPE && old_esc_mode) {
1574 if (no_delay) {
1575 GET_TIME (esctime);
1576 if (this == NULL) {
1577 /* Shouldn't happen */
1578 fputs ("Internal error\n", stderr);
1579 exit (1);
1580 }
1581 goto nodelay_try_again;
1582 }
1583 esctime.tv_sec = -1;
1584 c = xgetch_second ();
1585 if (c == -1) {
1586 pending_keys = seq_append = NULL;
1587 this = NULL;
1588 return ESC_CHAR;
1589 }
1590 } else {
1591 if (no_delay)
1592 goto nodelay_try_again;
1593 c = tty_lowlevel_getch ();
1594 }
1595 } else {
1596 /* We got a complete match, return and reset search */
1597 int code;
1598
1599 pending_keys = seq_append = NULL;
1600 code = this->code;
1601 this = NULL;
1602 return correct_key_code (code);
1603 }
1604 } else {
1605 if (this->next != NULL)
1606 this = this->next;
1607 else {
1608 if ((parent != NULL) && (parent->action == MCKEY_ESCAPE)) {
1609 /* Convert escape-digits to F-keys */
1610 if (g_ascii_isdigit (c))
1611 c = KEY_F (c - '0');
1612 else if (c == ' ')
1613 c = ESC_CHAR;
1614 else
1615 c = ALT (c);
1616
1617 pending_keys = seq_append = NULL;
1618 this = NULL;
1619 return correct_key_code (c);
1620 }
1621 /* Did not find a match or {c} was changed in the if above,
1622 so we have to return everything we had skipped
1623 */
1624 push_char (c);
1625 pending_keys = seq_buffer;
1626 goto pend_send;
1627 }
1628 }
1629 }
1630 this = NULL;
1631 return correct_key_code (c);
1632 }
1633
1634 /* Returns a character read from stdin with appropriate interpretation */
1635 /* Also takes care of generated mouse events */
1636 /* Returns EV_MOUSE if it is a mouse event */
1637 /* Returns EV_NONE if non-blocking or interrupt set and nothing was done */
1638 int
1639 tty_get_event (struct Gpm_Event *event, gboolean redo_event, gboolean block)
1640 {
1641 int c;
1642 static int flag = 0; /* Return value from select */
1643 #ifdef HAVE_LIBGPM
1644 static struct Gpm_Event ev; /* Mouse event */
1645 #endif
1646 struct timeval time_out;
1647 struct timeval *time_addr = NULL;
1648 static int dirty = 3;
1649
1650 if ((dirty == 3) || is_idle ()) {
1651 mc_refresh ();
1652 dirty = 1;
1653 } else
1654 dirty++;
1655
1656 vfs_timeout_handler ();
1657
1658 /* Ok, we use (event->x < 0) to signal that the event does not contain
1659 a suitable position for the mouse, so we can't use show_mouse_pointer
1660 on it.
1661 */
1662 if (event->x > 0) {
1663 show_mouse_pointer (event->x, event->y);
1664 if (!redo_event)
1665 event->x = -1;
1666 }
1667
1668 /* Repeat if using mouse */
1669 while (pending_keys == NULL) {
1670 int maxfdp;
1671 fd_set select_set;
1672
1673 FD_ZERO (&select_set);
1674 FD_SET (input_fd, &select_set);
1675 maxfdp = max (add_selects (&select_set), input_fd);
1676
1677 #ifdef HAVE_LIBGPM
1678 if (mouse_enabled && (use_mouse_p == MOUSE_GPM)) {
1679 if (gpm_fd < 0) {
1680 /* Connection to gpm broken, possibly gpm has died */
1681 mouse_enabled = FALSE;
1682 use_mouse_p = MOUSE_NONE;
1683 break;
1684 }
1685
1686 FD_SET (gpm_fd, &select_set);
1687 maxfdp = max (maxfdp, gpm_fd);
1688 }
1689 #endif
1690
1691 if (redo_event) {
1692 time_out.tv_usec = mou_auto_repeat * 1000;
1693 time_out.tv_sec = 0;
1694
1695 time_addr = &time_out;
1696 } else {
1697 int seconds;
1698
1699 seconds = vfs_timeouts ();
1700 time_addr = NULL;
1701
1702 if (seconds != 0) {
1703 /* the timeout could be improved and actually be
1704 * the number of seconds until the next vfs entry
1705 * timeouts in the stamp list.
1706 */
1707
1708 time_out.tv_sec = seconds;
1709 time_out.tv_usec = 0;
1710 time_addr = &time_out;
1711 }
1712 }
1713
1714 if (!block || winch_flag) {
1715 time_addr = &time_out;
1716 time_out.tv_sec = 0;
1717 time_out.tv_usec = 0;
1718 }
1719
1720 tty_enable_interrupt_key ();
1721 flag = select (maxfdp + 1, &select_set, NULL, NULL, time_addr);
1722 tty_disable_interrupt_key ();
1723
1724 /* select timed out: it could be for any of the following reasons:
1725 * redo_event -> it was because of the MOU_REPEAT handler
1726 * !block -> we did not block in the select call
1727 * else -> 10 second timeout to check the vfs status.
1728 */
1729 if (flag == 0) {
1730 if (redo_event)
1731 return EV_MOUSE;
1732 if (!block || winch_flag)
1733 return EV_NONE;
1734 vfs_timeout_handler ();
1735 }
1736 if (flag == -1 && errno == EINTR)
1737 return EV_NONE;
1738
1739 check_selects (&select_set);
1740
1741 if (FD_ISSET (input_fd, &select_set))
1742 break;
1743 #ifdef HAVE_LIBGPM
1744 if (mouse_enabled && use_mouse_p == MOUSE_GPM
1745 && gpm_fd > 0 && FD_ISSET (gpm_fd, &select_set)) {
1746 Gpm_GetEvent (&ev);
1747 Gpm_FitEvent (&ev);
1748 *event = ev;
1749 return EV_MOUSE;
1750 }
1751 #endif /* !HAVE_LIBGPM */
1752 }
1753
1754 #ifndef HAVE_SLANG
1755 flag = is_wintouched (stdscr);
1756 untouchwin (stdscr);
1757 #endif /* !HAVE_SLANG */
1758 c = block ? getch_with_delay () : get_key_code (1);
1759
1760 #ifndef HAVE_SLANG
1761 if (flag > 0)
1762 tty_touch_screen ();
1763 #endif /* !HAVE_SLANG */
1764
1765 if (mouse_enabled && (c == MCKEY_MOUSE
1766 #ifdef KEY_MOUSE
1767 || c == KEY_MOUSE
1768 #endif /* KEY_MOUSE */
1769 )) {
1770 /* Mouse event */
1771 xmouse_get_event (event);
1772 return (event->type != 0) ? EV_MOUSE : EV_NONE;
1773 }
1774
1775 return c;
1776 }
1777
1778 /* Returns a key press, mouse events are discarded */
1779 int
1780 tty_getch (void)
1781 {
1782 Gpm_Event ev;
1783 int key;
1784
1785 ev.x = -1;
1786 while ((key = tty_get_event (&ev, FALSE, TRUE)) == EV_NONE);
1787 return key;
1788 }
1789
1790 char *
1791 learn_key (void)
1792 {
1793 /* LEARN_TIMEOUT in usec */
1794 #define LEARN_TIMEOUT 200000
1795
1796 fd_set Read_FD_Set;
1797 struct timeval endtime;
1798 struct timeval time_out;
1799 int c;
1800 char buffer[256];
1801 char *p = buffer;
1802
1803 tty_keypad (FALSE); /* disable intepreting keys by ncurses */
1804 c = tty_lowlevel_getch ();
1805 while (c == -1)
1806 c = tty_lowlevel_getch (); /* Sanity check, should be unnecessary */
1807 learn_store_key (buffer, &p, c);
1808 GET_TIME (endtime);
1809 endtime.tv_usec += LEARN_TIMEOUT;
1810 if (endtime.tv_usec > 1000000) {
1811 endtime.tv_usec -= 1000000;
1812 endtime.tv_sec++;
1813 }
1814 tty_nodelay (TRUE);
1815 for (;;) {
1816 while ((c = tty_lowlevel_getch ()) == -1) {
1817 GET_TIME (time_out);
1818 time_out.tv_usec = endtime.tv_usec - time_out.tv_usec;
1819 if (time_out.tv_usec < 0)
1820 time_out.tv_sec++;
1821 time_out.tv_sec = endtime.tv_sec - time_out.tv_sec;
1822 if (time_out.tv_sec >= 0 && time_out.tv_usec > 0) {
1823 FD_ZERO (&Read_FD_Set);
1824 FD_SET (input_fd, &Read_FD_Set);
1825 select (input_fd + 1, &Read_FD_Set, NULL, NULL, &time_out);
1826 } else
1827 break;
1828 }
1829 if (c == -1)
1830 break;
1831 learn_store_key (buffer, &p, c);
1832 }
1833 tty_keypad (TRUE);
1834 tty_nodelay (FALSE);
1835 *p = '\0';
1836 return g_strdup (buffer);
1837 #undef LEARN_TIMEOUT
1838 }
1839
1840 /* xterm and linux console only: set keypad to numeric or application
1841 mode. Only in application keypad mode it's possible to distinguish
1842 the '+' key and the '+' on the keypad ('*' and '-' ditto)*/
1843 void
1844 numeric_keypad_mode (void)
1845 {
1846 if (console_flag || xterm_flag) {
1847 fputs ("\033>", stdout);
1848 fflush (stdout);
1849 }
1850 }
1851
1852 void
1853 application_keypad_mode (void)
1854 {
1855 if (console_flag || xterm_flag) {
1856 fputs ("\033=", stdout);
1857 fflush (stdout);
1858 }
1859 }
MC