tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* Internationalization implementation. Includes definitions of English
2 * string arrays, and the i18n pointer.
3 */
4
5#include <linux/slab.h> /* For kmalloc. */
6#include <linux/ctype.h>
7#include <linux/module.h>
8#include <linux/string.h>
9#include "speakup.h"
10#include "spk_priv.h"
11
12static char *speakup_msgs[MSG_LAST_INDEX];
13static char *speakup_default_msgs[MSG_LAST_INDEX] = {
14 [MSG_BLANK] = "blank",
15 [MSG_IAM_ALIVE] = "I'm aLive!",
16 [MSG_YOU_KILLED_SPEAKUP] = "You killed speakup!",
17 [MSG_HEY_THATS_BETTER] = "hey. That's better!",
18 [MSG_YOU_TURNED_ME_OFF] = "You turned me off!",
19 [MSG_PARKED] = "parked!",
20 [MSG_UNPARKED] = "unparked!",
21 [MSG_MARK] = "mark",
22 [MSG_CUT] = "cut",
23 [MSG_MARK_CLEARED] = "mark, cleared",
24 [MSG_PASTE] = "paste",
25 [MSG_BRIGHT] = "bright",
26 [MSG_ON_BLINKING] = "on blinking",
27 [MSG_OFF] = "off",
28 [MSG_ON] = "on",
29 [MSG_NO_WINDOW] = "no window",
30 [MSG_CURSORING_OFF] = "cursoring off",
31 [MSG_CURSORING_ON] = "cursoring on",
32 [MSG_HIGHLIGHT_TRACKING] = "highlight tracking",
33 [MSG_READ_WINDOW] = "read windo",
34 [MSG_READ_ALL] = "read all",
35 [MSG_EDIT_DONE] = "edit done",
36 [MSG_WINDOW_ALREADY_SET] = "window already set, clear then reset",
37 [MSG_END_BEFORE_START] = "error end before start",
38 [MSG_WINDOW_CLEARED] = "window cleared",
39 [MSG_WINDOW_SILENCED] = "window silenced",
40 [MSG_WINDOW_SILENCE_DISABLED] = "window silence disabled",
41 [MSG_ERROR] = "error",
42 [MSG_GOTO_CANCELED] = "goto canceled",
43 [MSG_GOTO] = "go to?",
44 [MSG_LEAVING_HELP] = "leaving help",
45 [MSG_IS_UNASSIGNED] = "is unassigned",
46 [MSG_HELP_INFO] =
47 "press space to exit, up or down to scroll, or a letter to go to a command",
48 [MSG_EDGE_TOP] = "top,",
49 [MSG_EDGE_BOTTOM] = "bottom,",
50 [MSG_EDGE_LEFT] = "left,",
51 [MSG_EDGE_RIGHT] = "right,",
52 [MSG_NUMBER] = "number",
53 [MSG_SPACE] = "space",
54 [MSG_START] = "start",
55 [MSG_END] = "end",
56 [MSG_CTRL] = "control-",
57 [MSG_DISJUNCTION] = "or",
58
59/* Messages with embedded format specifiers. */
60 [MSG_POS_INFO] = "line %ld, col %ld, t t y %d",
61 [MSG_CHAR_INFO] = "hex %02x, decimal %d",
62 [MSG_REPEAT_DESC] = "times %d .",
63 [MSG_REPEAT_DESC2] = "repeated %d .",
64 [MSG_WINDOW_LINE] = "window is line %d",
65 [MSG_WINDOW_BOUNDARY] = "%s at line %d, column %d",
66 [MSG_EDIT_PROMPT] = "edit %s, press space when done",
67 [MSG_NO_COMMAND] = "no commands for %c",
68 [MSG_KEYDESC] = "is %s",
69
70 /* Control keys. */
71 /* Most of these duplicate the entries in state names. */
72 [MSG_CTL_SHIFT] = "shift",
73 [MSG_CTL_ALTGR] = "altgr",
74 [MSG_CTL_CONTROL] = "control",
75 [MSG_CTL_ALT] = "alt",
76 [MSG_CTL_LSHIFT] = "l shift",
77 [MSG_CTL_SPEAKUP] = "speakup",
78 [MSG_CTL_LCONTROL] = "l control",
79 [MSG_CTL_RCONTROL] = "r control",
80 [MSG_CTL_CAPSSHIFT] = "caps shift",
81
82 /* Color names. */
83 [MSG_COLOR_BLACK] = "black",
84 [MSG_COLOR_BLUE] = "blue",
85 [MSG_COLOR_GREEN] = "green",
86 [MSG_COLOR_CYAN] = "cyan",
87 [MSG_COLOR_RED] = "red",
88 [MSG_COLOR_MAGENTA] = "magenta",
89 [MSG_COLOR_YELLOW] = "yellow",
90 [MSG_COLOR_WHITE] = "white",
91 [MSG_COLOR_GREY] = "grey",
92
93 /* Names of key states. */
94 [MSG_STATE_DOUBLE] = "double",
95 [MSG_STATE_SPEAKUP] = "speakup",
96 [MSG_STATE_ALT] = "alt",
97 [MSG_STATE_CONTROL] = "ctrl",
98 [MSG_STATE_ALTGR] = "altgr",
99 [MSG_STATE_SHIFT] = "shift",
100
101 /* Key names. */
102 [MSG_KEYNAME_ESC] = "escape",
103 [MSG_KEYNAME_1] = "1",
104 [MSG_KEYNAME_2] = "2",
105 [MSG_KEYNAME_3] = "3",
106 [MSG_KEYNAME_4] = "4",
107 [MSG_KEYNAME_5] = "5",
108 [MSG_KEYNAME_6] = "6",
109 [MSG_KEYNAME_7] = "7",
110 [MSG_KEYNAME_8] = "8",
111 [MSG_KEYNAME_9] = "9",
112 [MSG_KEYNAME_0] = "0",
113 [MSG_KEYNAME_DASH] = "minus",
114 [MSG_KEYNAME_EQUAL] = "equal",
115 [MSG_KEYNAME_BS] = "back space",
116 [MSG_KEYNAME_TAB] = "tab",
117 [MSG_KEYNAME_Q] = "q",
118 [MSG_KEYNAME_W] = "w",
119 [MSG_KEYNAME_E] = "e",
120 [MSG_KEYNAME_R] = "r",
121 [MSG_KEYNAME_T] = "t",
122 [MSG_KEYNAME_Y] = "y",
123 [MSG_KEYNAME_U] = "u",
124 [MSG_KEYNAME_I] = "i",
125 [MSG_KEYNAME_O] = "o",
126 [MSG_KEYNAME_P] = "p",
127 [MSG_KEYNAME_LEFTBRACE] = "left brace",
128 [MSG_KEYNAME_RIGHTBRACE] = "right brace",
129 [MSG_KEYNAME_ENTER] = "enter",
130 [MSG_KEYNAME_LEFTCTRL] = "left control",
131 [MSG_KEYNAME_A] = "a",
132 [MSG_KEYNAME_S] = "s",
133 [MSG_KEYNAME_D] = "d",
134 [MSG_KEYNAME_F] = "f",
135 [MSG_KEYNAME_G] = "g",
136 [MSG_KEYNAME_H] = "h",
137 [MSG_KEYNAME_J] = "j",
138 [MSG_KEYNAME_K] = "k",
139 [MSG_KEYNAME_L] = "l",
140 [MSG_KEYNAME_SEMICOLON] = "semicolon",
141 [MSG_KEYNAME_SINGLEQUOTE] = "apostrophe",
142 [MSG_KEYNAME_GRAVE] = "accent",
143 [MSG_KEYNAME_LEFTSHFT] = "left shift",
144 [MSG_KEYNAME_BACKSLASH] = "back slash",
145 [MSG_KEYNAME_Z] = "z",
146 [MSG_KEYNAME_X] = "x",
147 [MSG_KEYNAME_C] = "c",
148 [MSG_KEYNAME_V] = "v",
149 [MSG_KEYNAME_B] = "b",
150 [MSG_KEYNAME_N] = "n",
151 [MSG_KEYNAME_M] = "m",
152 [MSG_KEYNAME_COMMA] = "comma",
153 [MSG_KEYNAME_DOT] = "dot",
154 [MSG_KEYNAME_SLASH] = "slash",
155 [MSG_KEYNAME_RIGHTSHFT] = "right shift",
156 [MSG_KEYNAME_KPSTAR] = "keypad asterisk",
157 [MSG_KEYNAME_LEFTALT] = "left alt",
158 [MSG_KEYNAME_SPACE] = "space",
159 [MSG_KEYNAME_CAPSLOCK] = "caps lock",
160 [MSG_KEYNAME_F1] = "f1",
161 [MSG_KEYNAME_F2] = "f2",
162 [MSG_KEYNAME_F3] = "f3",
163 [MSG_KEYNAME_F4] = "f4",
164 [MSG_KEYNAME_F5] = "f5",
165 [MSG_KEYNAME_F6] = "f6",
166 [MSG_KEYNAME_F7] = "f7",
167 [MSG_KEYNAME_F8] = "f8",
168 [MSG_KEYNAME_F9] = "f9",
169 [MSG_KEYNAME_F10] = "f10",
170 [MSG_KEYNAME_NUMLOCK] = "num lock",
171 [MSG_KEYNAME_SCROLLLOCK] = "scroll lock",
172 [MSG_KEYNAME_KP7] = "keypad 7",
173 [MSG_KEYNAME_KP8] = "keypad 8",
174 [MSG_KEYNAME_KP9] = "keypad 9",
175 [MSG_KEYNAME_KPMINUS] = "keypad minus",
176 [MSG_KEYNAME_KP4] = "keypad 4",
177 [MSG_KEYNAME_KP5] = "keypad 5",
178 [MSG_KEYNAME_KP6] = "keypad 6",
179 [MSG_KEYNAME_KPPLUS] = "keypad plus",
180 [MSG_KEYNAME_KP1] = "keypad 1",
181 [MSG_KEYNAME_KP2] = "keypad 2",
182 [MSG_KEYNAME_KP3] = "keypad 3",
183 [MSG_KEYNAME_KP0] = "keypad 0",
184 [MSG_KEYNAME_KPDOT] = "keypad dot",
185 [MSG_KEYNAME_103RD] = "103rd",
186 [MSG_KEYNAME_F13] = "f13",
187 [MSG_KEYNAME_102ND] = "102nd",
188 [MSG_KEYNAME_F11] = "f11",
189 [MSG_KEYNAME_F12] = "f12",
190 [MSG_KEYNAME_F14] = "f14",
191 [MSG_KEYNAME_F15] = "f15",
192 [MSG_KEYNAME_F16] = "f16",
193 [MSG_KEYNAME_F17] = "f17",
194 [MSG_KEYNAME_F18] = "f18",
195 [MSG_KEYNAME_F19] = "f19",
196 [MSG_KEYNAME_F20] = "f20",
197 [MSG_KEYNAME_KPENTER] = "keypad enter",
198 [MSG_KEYNAME_RIGHTCTRL] = "right control",
199 [MSG_KEYNAME_KPSLASH] = "keypad slash",
200 [MSG_KEYNAME_SYSRQ] = "sysrq",
201 [MSG_KEYNAME_RIGHTALT] = "right alt",
202 [MSG_KEYNAME_LF] = "line feed",
203 [MSG_KEYNAME_HOME] = "home",
204 [MSG_KEYNAME_UP] = "up",
205 [MSG_KEYNAME_PGUP] = "page up",
206 [MSG_KEYNAME_LEFT] = "left",
207 [MSG_KEYNAME_RIGHT] = "right",
208 [MSG_KEYNAME_END] = "end",
209 [MSG_KEYNAME_DOWN] = "down",
210 [MSG_KEYNAME_PGDN] = "page down",
211 [MSG_KEYNAME_INS] = "insert",
212 [MSG_KEYNAME_DEL] = "delete",
213 [MSG_KEYNAME_MACRO] = "macro",
214 [MSG_KEYNAME_MUTE] = "mute",
215 [MSG_KEYNAME_VOLDOWN] = "volume down",
216 [MSG_KEYNAME_VOLUP] = "volume up",
217 [MSG_KEYNAME_POWER] = "power",
218 [MSG_KEYNAME_KPEQUAL] = "keypad equal",
219 [MSG_KEYNAME_KPPLUSDASH] = "keypad plusminus",
220 [MSG_KEYNAME_PAUSE] = "pause",
221 [MSG_KEYNAME_F21] = "f21",
222 [MSG_KEYNAME_F22] = "f22",
223 [MSG_KEYNAME_F23] = "f23",
224 [MSG_KEYNAME_F24] = "f24",
225 [MSG_KEYNAME_KPCOMMA] = "keypad comma",
226 [MSG_KEYNAME_LEFTMETA] = "left meta",
227 [MSG_KEYNAME_RIGHTMETA] = "right meta",
228 [MSG_KEYNAME_COMPOSE] = "compose",
229 [MSG_KEYNAME_STOP] = "stop",
230 [MSG_KEYNAME_AGAIN] = "again",
231 [MSG_KEYNAME_PROPS] = "props",
232 [MSG_KEYNAME_UNDO] = "undo",
233 [MSG_KEYNAME_FRONT] = "front",
234 [MSG_KEYNAME_COPY] = "copy",
235 [MSG_KEYNAME_OPEN] = "open",
236 [MSG_KEYNAME_PASTE] = "paste",
237 [MSG_KEYNAME_FIND] = "find",
238 [MSG_KEYNAME_CUT] = "cut",
239 [MSG_KEYNAME_HELP] = "help",
240 [MSG_KEYNAME_MENU] = "menu",
241 [MSG_KEYNAME_CALC] = "calc",
242 [MSG_KEYNAME_SETUP] = "setup",
243 [MSG_KEYNAME_SLEEP] = "sleep",
244 [MSG_KEYNAME_WAKEUP] = "wakeup",
245 [MSG_KEYNAME_FILE] = "file",
246 [MSG_KEYNAME_SENDFILE] = "send file",
247 [MSG_KEYNAME_DELFILE] = "delete file",
248 [MSG_KEYNAME_XFER] = "transfer",
249 [MSG_KEYNAME_PROG1] = "prog1",
250 [MSG_KEYNAME_PROG2] = "prog2",
251 [MSG_KEYNAME_WWW] = "www",
252 [MSG_KEYNAME_MSDOS] = "msdos",
253 [MSG_KEYNAME_COFFEE] = "coffee",
254 [MSG_KEYNAME_DIRECTION] = "direction",
255 [MSG_KEYNAME_CYCLEWINDOWS] = "cycle windows",
256 [MSG_KEYNAME_MAIL] = "mail",
257 [MSG_KEYNAME_BOOKMARKS] = "bookmarks",
258 [MSG_KEYNAME_COMPUTER] = "computer",
259 [MSG_KEYNAME_BACK] = "back",
260 [MSG_KEYNAME_FORWARD] = "forward",
261 [MSG_KEYNAME_CLOSECD] = "close cd",
262 [MSG_KEYNAME_EJECTCD] = "eject cd",
263 [MSG_KEYNAME_EJECTCLOSE] = "eject close cd",
264 [MSG_KEYNAME_NEXTSONG] = "next song",
265 [MSG_KEYNAME_PLAYPAUSE] = "play pause",
266 [MSG_KEYNAME_PREVSONG] = "previous song",
267 [MSG_KEYNAME_STOPCD] = "stop cd",
268 [MSG_KEYNAME_RECORD] = "record",
269 [MSG_KEYNAME_REWIND] = "rewind",
270 [MSG_KEYNAME_PHONE] = "phone",
271 [MSG_KEYNAME_ISO] = "iso",
272 [MSG_KEYNAME_CONFIG] = "config",
273 [MSG_KEYNAME_HOMEPG] = "home page",
274 [MSG_KEYNAME_REFRESH] = "refresh",
275 [MSG_KEYNAME_EXIT] = "exit",
276 [MSG_KEYNAME_MOVE] = "move",
277 [MSG_KEYNAME_EDIT] = "edit",
278 [MSG_KEYNAME_SCROLLUP] = "scroll up",
279 [MSG_KEYNAME_SCROLLDN] = "scroll down",
280 [MSG_KEYNAME_KPLEFTPAR] = "keypad left paren",
281 [MSG_KEYNAME_KPRIGHTPAR] = "keypad right paren",
282
283 /* Function names. */
284 [MSG_FUNCNAME_ATTRIB_BLEEP_DEC] = "attribute bleep decrement",
285 [MSG_FUNCNAME_ATTRIB_BLEEP_INC] = "attribute bleep increment",
286 [MSG_FUNCNAME_BLEEPS_DEC] = "bleeps decrement",
287 [MSG_FUNCNAME_BLEEPS_INC] = "bleeps increment",
288 [MSG_FUNCNAME_CHAR_FIRST] = "character, first",
289 [MSG_FUNCNAME_CHAR_LAST] = "character, last",
290 [MSG_FUNCNAME_CHAR_CURRENT] = "character, say current",
291 [MSG_FUNCNAME_CHAR_HEX_AND_DEC] = "character, say hex and decimal",
292 [MSG_FUNCNAME_CHAR_NEXT] = "character, say next",
293 [MSG_FUNCNAME_CHAR_PHONETIC] = "character, say phonetic",
294 [MSG_FUNCNAME_CHAR_PREVIOUS] = "character, say previous",
295 [MSG_FUNCNAME_CURSOR_PARK] = "cursor park",
296 [MSG_FUNCNAME_CUT] = "cut",
297 [MSG_FUNCNAME_EDIT_DELIM] = "edit delimiters",
298 [MSG_FUNCNAME_EDIT_EXNUM] = "edit exnum",
299 [MSG_FUNCNAME_EDIT_MOST] = "edit most",
300 [MSG_FUNCNAME_EDIT_REPEATS] = "edit repeats",
301 [MSG_FUNCNAME_EDIT_SOME] = "edit some",
302 [MSG_FUNCNAME_GOTO] = "go to",
303 [MSG_FUNCNAME_GOTO_BOTTOM] = "go to bottom edge",
304 [MSG_FUNCNAME_GOTO_LEFT] = "go to left edge",
305 [MSG_FUNCNAME_GOTO_RIGHT] = "go to right edge",
306 [MSG_FUNCNAME_GOTO_TOP] = "go to top edge",
307 [MSG_FUNCNAME_HELP] = "help",
308 [MSG_FUNCNAME_LINE_SAY_CURRENT] = "line, say current",
309 [MSG_FUNCNAME_LINE_SAY_NEXT] = "line, say next",
310 [MSG_FUNCNAME_LINE_SAY_PREVIOUS] = "line, say previous",
311 [MSG_FUNCNAME_LINE_SAY_WITH_INDENT] = "line, say with indent",
312 [MSG_FUNCNAME_PASTE] = "paste",
313 [MSG_FUNCNAME_PITCH_DEC] = "pitch decrement",
314 [MSG_FUNCNAME_PITCH_INC] = "pitch increment",
315 [MSG_FUNCNAME_PUNC_DEC] = "punctuation decrement",
316 [MSG_FUNCNAME_PUNC_INC] = "punctuation increment",
317 [MSG_FUNCNAME_PUNC_LEVEL_DEC] = "punc level decrement",
318 [MSG_FUNCNAME_PUNC_LEVEL_INC] = "punc level increment",
319 [MSG_FUNCNAME_QUIET] = "quiet",
320 [MSG_FUNCNAME_RATE_DEC] = "rate decrement",
321 [MSG_FUNCNAME_RATE_INC] = "rate increment",
322 [MSG_FUNCNAME_READING_PUNC_DEC] = "reading punctuation decrement",
323 [MSG_FUNCNAME_READING_PUNC_INC] = "reading punctuation increment",
324 [MSG_FUNCNAME_SAY_ATTRIBUTES] = "say attributes",
325 [MSG_FUNCNAME_SAY_FROM_LEFT] = "say from left",
326 [MSG_FUNCNAME_SAY_FROM_TOP] = "say from top",
327 [MSG_FUNCNAME_SAY_POSITION] = "say position",
328 [MSG_FUNCNAME_SAY_SCREEN] = "say screen",
329 [MSG_FUNCNAME_SAY_TO_BOTTOM] = "say to bottom",
330 [MSG_FUNCNAME_SAY_TO_RIGHT] = "say to right",
331 [MSG_FUNCNAME_SPEAKUP] = "speakup",
332 [MSG_FUNCNAME_SPEAKUP_LOCK] = "speakup lock",
333 [MSG_FUNCNAME_SPEAKUP_OFF] = "speakup off",
334 [MSG_FUNCNAME_SPEECH_KILL] = "speech kill",
335 [MSG_FUNCNAME_SPELL_DELAY_DEC] = "spell delay decrement",
336 [MSG_FUNCNAME_SPELL_DELAY_INC] = "spell delay increment",
337 [MSG_FUNCNAME_SPELL_WORD] = "spell word",
338 [MSG_FUNCNAME_SPELL_WORD_PHONETICALLY] = "spell word phoneticly",
339 [MSG_FUNCNAME_TONE_DEC] = "tone decrement",
340 [MSG_FUNCNAME_TONE_INC] = "tone increment",
341 [MSG_FUNCNAME_VOICE_DEC] = "voice decrement",
342 [MSG_FUNCNAME_VOICE_INC] = "voice increment",
343 [MSG_FUNCNAME_VOLUME_DEC] = "volume decrement",
344 [MSG_FUNCNAME_VOLUME_INC] = "volume increment",
345 [MSG_FUNCNAME_WINDOW_CLEAR] = "window, clear",
346 [MSG_FUNCNAME_WINDOW_SAY] = "window, say",
347 [MSG_FUNCNAME_WINDOW_SET] = "window, set",
348 [MSG_FUNCNAME_WINDOW_SILENCE] = "window, silence",
349 [MSG_FUNCNAME_WORD_SAY_CURRENT] = "word, say current",
350 [MSG_FUNCNAME_WORD_SAY_NEXT] = "word, say next",
351 [MSG_FUNCNAME_WORD_SAY_PREVIOUS] = "word, say previous",
352};
353
354static struct msg_group_t all_groups[] = {
355 {
356 .name = "ctl_keys",
357 .start = MSG_CTL_START,
358 .end = MSG_CTL_END,
359 },
360 {
361 .name = "colors",
362 .start = MSG_COLORS_START,
363 .end = MSG_COLORS_END,
364 },
365 {
366 .name = "formatted",
367 .start = MSG_FORMATTED_START,
368 .end = MSG_FORMATTED_END,
369 },
370 {
371 .name = "function_names",
372 .start = MSG_FUNCNAMES_START,
373 .end = MSG_FUNCNAMES_END,
374 },
375 {
376 .name = "key_names",
377 .start = MSG_KEYNAMES_START,
378 .end = MSG_KEYNAMES_END,
379 },
380 {
381 .name = "announcements",
382 .start = MSG_ANNOUNCEMENTS_START,
383 .end = MSG_ANNOUNCEMENTS_END,
384 },
385 {
386 .name = "states",
387 .start = MSG_STATES_START,
388 .end = MSG_STATES_END,
389 },
390};
391
392static const int num_groups = ARRAY_SIZE(all_groups);
393
394char *spk_msg_get(enum msg_index_t index)
395{
396 return speakup_msgs[index];
397}
398
399/*
400 * Function: next_specifier
401 * Finds the start of the next format specifier in the argument string.
402 * Return value: pointer to start of format
403 * specifier, or NULL if no specifier exists.
404 */
405static char *next_specifier(char *input)
406{
407 int found = 0;
408 char *next_percent = input;
409
410 while (next_percent && !found) {
411 next_percent = strchr(next_percent, '%');
412 if (next_percent) {
413 /* skip over doubled percent signs */
414 while (next_percent[0] == '%' &&
415 next_percent[1] == '%')
416 next_percent += 2;
417 if (*next_percent == '%')
418 found = 1;
419 else if (*next_percent == '\0')
420 next_percent = NULL;
421 }
422 }
423
424 return next_percent;
425}
426
427/* Skip over 0 or more flags. */
428static char *skip_flags(char *input)
429{
430 while ((*input != '\0') && strchr(" 0+-#", *input))
431 input++;
432 return input;
433}
434
435/* Skip over width.precision, if it exists. */
436static char *skip_width(char *input)
437{
438 while (isdigit(*input))
439 input++;
440 if (*input == '.') {
441 input++;
442 while (isdigit(*input))
443 input++;
444 }
445 return input;
446}
447
448/*
449 * Skip past the end of the conversion part.
450 * Note that this code only accepts a handful of conversion specifiers:
451 * c d s x and ld. Not accidental; these are exactly the ones used in
452 * the default group of formatted messages.
453 */
454static char *skip_conversion(char *input)
455{
456 if ((input[0] == 'l') && (input[1] == 'd'))
457 input += 2;
458 else if ((*input != '\0') && strchr("cdsx", *input))
459 input++;
460 return input;
461}
462
463/*
464 * Function: find_specifier_end
465 * Return a pointer to the end of the format specifier.
466 */
467static char *find_specifier_end(char *input)
468{
469 input++; /* Advance over %. */
470 input = skip_flags(input);
471 input = skip_width(input);
472 input = skip_conversion(input);
473 return input;
474}
475
476/*
477 * Function: compare_specifiers
478 * Compare the format specifiers pointed to by *input1 and *input2.
479 * Return true if they are the same, false otherwise.
480 * Advance *input1 and *input2 so that they point to the character following
481 * the end of the specifier.
482 */
483static bool compare_specifiers(char **input1, char **input2)
484{
485 bool same = false;
486 char *end1 = find_specifier_end(*input1);
487 char *end2 = find_specifier_end(*input2);
488 size_t length1 = end1 - *input1;
489 size_t length2 = end2 - *input2;
490
491 if ((length1 == length2) && !memcmp(*input1, *input2, length1))
492 same = true;
493
494 *input1 = end1;
495 *input2 = end2;
496 return same;
497}
498
499/*
500 * Function: fmt_validate
501 * Check that two format strings contain the same number of format specifiers,
502 * and that the order of specifiers is the same in both strings.
503 * Return true if the condition holds, false if it doesn't.
504 */
505static bool fmt_validate(char *template, char *user)
506{
507 bool valid = true;
508 bool still_comparing = true;
509 char *template_ptr = template;
510 char *user_ptr = user;
511
512 while (still_comparing && valid) {
513 template_ptr = next_specifier(template_ptr);
514 user_ptr = next_specifier(user_ptr);
515 if (template_ptr && user_ptr) {
516 /* Both have at least one more specifier. */
517 valid = compare_specifiers(&template_ptr, &user_ptr);
518 } else {
519 /* No more format specifiers in one or both strings. */
520 still_comparing = false;
521 /* See if one has more specifiers than the other. */
522 if (template_ptr || user_ptr)
523 valid = false;
524 }
525 }
526 return valid;
527}
528
529/*
530 * Function: msg_set
531 * Description: Add a user-supplied message to the user_messages array.
532 * The message text is copied to a memory area allocated with kmalloc.
533 * If the function fails, then user_messages is untouched.
534 * Arguments:
535 * - index: a message number, as found in i18n.h.
536 * - text: text of message. Not NUL-terminated.
537 * - length: number of bytes in text.
538 * Failure conditions:
539 * -EINVAL - Invalid format specifiers in formatted message or illegal index.
540 * -ENOMEM - Unable to allocate memory.
541 */
542ssize_t spk_msg_set(enum msg_index_t index, char *text, size_t length)
543{
544 char *newstr = NULL;
545 unsigned long flags;
546
547 if ((index < MSG_FIRST_INDEX) || (index >= MSG_LAST_INDEX))
548 return -EINVAL;
549
550 newstr = kmalloc(length + 1, GFP_KERNEL);
551 if (!newstr)
552 return -ENOMEM;
553
554 memcpy(newstr, text, length);
555 newstr[length] = '\0';
556 if (index >= MSG_FORMATTED_START &&
557 index <= MSG_FORMATTED_END &&
558 !fmt_validate(speakup_default_msgs[index], newstr)) {
559 kfree(newstr);
560 return -EINVAL;
561 }
562 spin_lock_irqsave(&speakup_info.spinlock, flags);
563 if (speakup_msgs[index] != speakup_default_msgs[index])
564 kfree(speakup_msgs[index]);
565 speakup_msgs[index] = newstr;
566 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
567 return 0;
568}
569
570/*
571 * Find a message group, given its name. Return a pointer to the structure
572 * if found, or NULL otherwise.
573 */
574struct msg_group_t *spk_find_msg_group(const char *group_name)
575{
576 struct msg_group_t *group = NULL;
577 int i;
578
579 for (i = 0; i < num_groups; i++) {
580 if (!strcmp(all_groups[i].name, group_name)) {
581 group = &all_groups[i];
582 break;
583 }
584 }
585 return group;
586}
587
588void spk_reset_msg_group(struct msg_group_t *group)
589{
590 unsigned long flags;
591 enum msg_index_t i;
592
593 spin_lock_irqsave(&speakup_info.spinlock, flags);
594
595 for (i = group->start; i <= group->end; i++) {
596 if (speakup_msgs[i] != speakup_default_msgs[i])
597 kfree(speakup_msgs[i]);
598 speakup_msgs[i] = speakup_default_msgs[i];
599 }
600 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
601}
602
603/* Called at initialization time, to establish default messages. */
604void spk_initialize_msgs(void)
605{
606 memcpy(speakup_msgs, speakup_default_msgs,
607 sizeof(speakup_default_msgs));
608}
609
610/* Free user-supplied strings when module is unloaded: */
611void spk_free_user_msgs(void)
612{
613 enum msg_index_t index;
614 unsigned long flags;
615
616 spin_lock_irqsave(&speakup_info.spinlock, flags);
617 for (index = MSG_FIRST_INDEX; index < MSG_LAST_INDEX; index++) {
618 if (speakup_msgs[index] != speakup_default_msgs[index]) {
619 kfree(speakup_msgs[index]);
620 speakup_msgs[index] = speakup_default_msgs[index];
621 }
622 }
623 spin_unlock_irqrestore(&speakup_info.spinlock, flags);
624}