631 lines · c
1// SPDX-License-Identifier: GPL-2.02/* Internationalization implementation. Includes definitions of English3 * string arrays, and the i18n pointer.4 */5 6#include <linux/slab.h> /* For kmalloc. */7#include <linux/ctype.h>8#include <linux/module.h>9#include <linux/string.h>10#include "speakup.h"11#include "spk_priv.h"12 13static char *speakup_msgs[MSG_LAST_INDEX];14static char *speakup_default_msgs[MSG_LAST_INDEX] = {15 [MSG_BLANK] = "blank",16 [MSG_IAM_ALIVE] = "I'm aLive!",17 [MSG_YOU_KILLED_SPEAKUP] = "You killed speakup!",18 [MSG_HEY_THATS_BETTER] = "hey. That's better!",19 [MSG_YOU_TURNED_ME_OFF] = "You turned me off!",20 [MSG_PARKED] = "parked!",21 [MSG_UNPARKED] = "unparked!",22 [MSG_MARK] = "mark",23 [MSG_CUT] = "cut",24 [MSG_MARK_CLEARED] = "mark, cleared",25 [MSG_PASTE] = "paste",26 [MSG_BRIGHT] = "bright",27 [MSG_ON_BLINKING] = "on blinking",28 [MSG_OFF] = "off",29 [MSG_ON] = "on",30 [MSG_NO_WINDOW] = "no window",31 [MSG_CURSORING_OFF] = "cursoring off",32 [MSG_CURSORING_ON] = "cursoring on",33 [MSG_HIGHLIGHT_TRACKING] = "highlight tracking",34 [MSG_READ_WINDOW] = "read windo",35 [MSG_READ_ALL] = "read all",36 [MSG_EDIT_DONE] = "edit done",37 [MSG_WINDOW_ALREADY_SET] = "window already set, clear then reset",38 [MSG_END_BEFORE_START] = "error end before start",39 [MSG_WINDOW_CLEARED] = "window cleared",40 [MSG_WINDOW_SILENCED] = "window silenced",41 [MSG_WINDOW_SILENCE_DISABLED] = "window silence disabled",42 [MSG_ERROR] = "error",43 [MSG_GOTO_CANCELED] = "goto canceled",44 [MSG_GOTO] = "go to?",45 [MSG_LEAVING_HELP] = "leaving help",46 [MSG_IS_UNASSIGNED] = "is unassigned",47 [MSG_HELP_INFO] =48 "press space to exit, up or down to scroll, or a letter to go to a command",49 [MSG_EDGE_TOP] = "top,",50 [MSG_EDGE_BOTTOM] = "bottom,",51 [MSG_EDGE_LEFT] = "left,",52 [MSG_EDGE_RIGHT] = "right,",53 [MSG_NUMBER] = "number",54 [MSG_SPACE] = "space",55 [MSG_START] = "start",56 [MSG_END] = "end",57 [MSG_CTRL] = "control-",58 [MSG_DISJUNCTION] = "or",59 60/* Messages with embedded format specifiers. */61 [MSG_POS_INFO] = "line %ld, col %ld, t t y %d",62 [MSG_CHAR_INFO] = "hex %02x, decimal %d",63 [MSG_REPEAT_DESC] = "times %d .",64 [MSG_REPEAT_DESC2] = "repeated %d .",65 [MSG_WINDOW_LINE] = "window is line %d",66 [MSG_WINDOW_BOUNDARY] = "%s at line %d, column %d",67 [MSG_EDIT_PROMPT] = "edit %s, press space when done",68 [MSG_NO_COMMAND] = "no commands for %c",69 [MSG_KEYDESC] = "is %s",70 71 /* Control keys. */72 /* Most of these duplicate the entries in state names. */73 [MSG_CTL_SHIFT] = "shift",74 [MSG_CTL_ALTGR] = "altgr",75 [MSG_CTL_CONTROL] = "control",76 [MSG_CTL_ALT] = "alt",77 [MSG_CTL_LSHIFT] = "l shift",78 [MSG_CTL_SPEAKUP] = "speakup",79 [MSG_CTL_LCONTROL] = "l control",80 [MSG_CTL_RCONTROL] = "r control",81 [MSG_CTL_CAPSSHIFT] = "caps shift",82 83 /* Color names. */84 [MSG_COLOR_BLACK] = "black",85 [MSG_COLOR_BLUE] = "blue",86 [MSG_COLOR_GREEN] = "green",87 [MSG_COLOR_CYAN] = "cyan",88 [MSG_COLOR_RED] = "red",89 [MSG_COLOR_MAGENTA] = "magenta",90 [MSG_COLOR_YELLOW] = "yellow",91 [MSG_COLOR_WHITE] = "white",92 [MSG_COLOR_GREY] = "grey",93 [MSG_COLOR_BRIGHTBLUE] = "bright blue",94 [MSG_COLOR_BRIGHTGREEN] = "bright green",95 [MSG_COLOR_BRIGHTCYAN] = "bright cyan",96 [MSG_COLOR_BRIGHTRED] = "bright red",97 [MSG_COLOR_BRIGHTMAGENTA] = "bright magenta",98 [MSG_COLOR_BRIGHTYELLOW] = "bright yellow",99 [MSG_COLOR_BRIGHTWHITE] = "bright white",100 101 /* Names of key states. */102 [MSG_STATE_DOUBLE] = "double",103 [MSG_STATE_SPEAKUP] = "speakup",104 [MSG_STATE_ALT] = "alt",105 [MSG_STATE_CONTROL] = "ctrl",106 [MSG_STATE_ALTGR] = "altgr",107 [MSG_STATE_SHIFT] = "shift",108 109 /* Key names. */110 [MSG_KEYNAME_ESC] = "escape",111 [MSG_KEYNAME_1] = "1",112 [MSG_KEYNAME_2] = "2",113 [MSG_KEYNAME_3] = "3",114 [MSG_KEYNAME_4] = "4",115 [MSG_KEYNAME_5] = "5",116 [MSG_KEYNAME_6] = "6",117 [MSG_KEYNAME_7] = "7",118 [MSG_KEYNAME_8] = "8",119 [MSG_KEYNAME_9] = "9",120 [MSG_KEYNAME_0] = "0",121 [MSG_KEYNAME_DASH] = "minus",122 [MSG_KEYNAME_EQUAL] = "equal",123 [MSG_KEYNAME_BS] = "back space",124 [MSG_KEYNAME_TAB] = "tab",125 [MSG_KEYNAME_Q] = "q",126 [MSG_KEYNAME_W] = "w",127 [MSG_KEYNAME_E] = "e",128 [MSG_KEYNAME_R] = "r",129 [MSG_KEYNAME_T] = "t",130 [MSG_KEYNAME_Y] = "y",131 [MSG_KEYNAME_U] = "u",132 [MSG_KEYNAME_I] = "i",133 [MSG_KEYNAME_O] = "o",134 [MSG_KEYNAME_P] = "p",135 [MSG_KEYNAME_LEFTBRACE] = "left brace",136 [MSG_KEYNAME_RIGHTBRACE] = "right brace",137 [MSG_KEYNAME_ENTER] = "enter",138 [MSG_KEYNAME_LEFTCTRL] = "left control",139 [MSG_KEYNAME_A] = "a",140 [MSG_KEYNAME_S] = "s",141 [MSG_KEYNAME_D] = "d",142 [MSG_KEYNAME_F] = "f",143 [MSG_KEYNAME_G] = "g",144 [MSG_KEYNAME_H] = "h",145 [MSG_KEYNAME_J] = "j",146 [MSG_KEYNAME_K] = "k",147 [MSG_KEYNAME_L] = "l",148 [MSG_KEYNAME_SEMICOLON] = "semicolon",149 [MSG_KEYNAME_SINGLEQUOTE] = "apostrophe",150 [MSG_KEYNAME_GRAVE] = "accent",151 [MSG_KEYNAME_LEFTSHFT] = "left shift",152 [MSG_KEYNAME_BACKSLASH] = "back slash",153 [MSG_KEYNAME_Z] = "z",154 [MSG_KEYNAME_X] = "x",155 [MSG_KEYNAME_C] = "c",156 [MSG_KEYNAME_V] = "v",157 [MSG_KEYNAME_B] = "b",158 [MSG_KEYNAME_N] = "n",159 [MSG_KEYNAME_M] = "m",160 [MSG_KEYNAME_COMMA] = "comma",161 [MSG_KEYNAME_DOT] = "dot",162 [MSG_KEYNAME_SLASH] = "slash",163 [MSG_KEYNAME_RIGHTSHFT] = "right shift",164 [MSG_KEYNAME_KPSTAR] = "keypad asterisk",165 [MSG_KEYNAME_LEFTALT] = "left alt",166 [MSG_KEYNAME_SPACE] = "space",167 [MSG_KEYNAME_CAPSLOCK] = "caps lock",168 [MSG_KEYNAME_F1] = "f1",169 [MSG_KEYNAME_F2] = "f2",170 [MSG_KEYNAME_F3] = "f3",171 [MSG_KEYNAME_F4] = "f4",172 [MSG_KEYNAME_F5] = "f5",173 [MSG_KEYNAME_F6] = "f6",174 [MSG_KEYNAME_F7] = "f7",175 [MSG_KEYNAME_F8] = "f8",176 [MSG_KEYNAME_F9] = "f9",177 [MSG_KEYNAME_F10] = "f10",178 [MSG_KEYNAME_NUMLOCK] = "num lock",179 [MSG_KEYNAME_SCROLLLOCK] = "scroll lock",180 [MSG_KEYNAME_KP7] = "keypad 7",181 [MSG_KEYNAME_KP8] = "keypad 8",182 [MSG_KEYNAME_KP9] = "keypad 9",183 [MSG_KEYNAME_KPMINUS] = "keypad minus",184 [MSG_KEYNAME_KP4] = "keypad 4",185 [MSG_KEYNAME_KP5] = "keypad 5",186 [MSG_KEYNAME_KP6] = "keypad 6",187 [MSG_KEYNAME_KPPLUS] = "keypad plus",188 [MSG_KEYNAME_KP1] = "keypad 1",189 [MSG_KEYNAME_KP2] = "keypad 2",190 [MSG_KEYNAME_KP3] = "keypad 3",191 [MSG_KEYNAME_KP0] = "keypad 0",192 [MSG_KEYNAME_KPDOT] = "keypad dot",193 [MSG_KEYNAME_103RD] = "103rd",194 [MSG_KEYNAME_F13] = "f13",195 [MSG_KEYNAME_102ND] = "102nd",196 [MSG_KEYNAME_F11] = "f11",197 [MSG_KEYNAME_F12] = "f12",198 [MSG_KEYNAME_F14] = "f14",199 [MSG_KEYNAME_F15] = "f15",200 [MSG_KEYNAME_F16] = "f16",201 [MSG_KEYNAME_F17] = "f17",202 [MSG_KEYNAME_F18] = "f18",203 [MSG_KEYNAME_F19] = "f19",204 [MSG_KEYNAME_F20] = "f20",205 [MSG_KEYNAME_KPENTER] = "keypad enter",206 [MSG_KEYNAME_RIGHTCTRL] = "right control",207 [MSG_KEYNAME_KPSLASH] = "keypad slash",208 [MSG_KEYNAME_SYSRQ] = "sysrq",209 [MSG_KEYNAME_RIGHTALT] = "right alt",210 [MSG_KEYNAME_LF] = "line feed",211 [MSG_KEYNAME_HOME] = "home",212 [MSG_KEYNAME_UP] = "up",213 [MSG_KEYNAME_PGUP] = "page up",214 [MSG_KEYNAME_LEFT] = "left",215 [MSG_KEYNAME_RIGHT] = "right",216 [MSG_KEYNAME_END] = "end",217 [MSG_KEYNAME_DOWN] = "down",218 [MSG_KEYNAME_PGDN] = "page down",219 [MSG_KEYNAME_INS] = "insert",220 [MSG_KEYNAME_DEL] = "delete",221 [MSG_KEYNAME_MACRO] = "macro",222 [MSG_KEYNAME_MUTE] = "mute",223 [MSG_KEYNAME_VOLDOWN] = "volume down",224 [MSG_KEYNAME_VOLUP] = "volume up",225 [MSG_KEYNAME_POWER] = "power",226 [MSG_KEYNAME_KPEQUAL] = "keypad equal",227 [MSG_KEYNAME_KPPLUSDASH] = "keypad plusminus",228 [MSG_KEYNAME_PAUSE] = "pause",229 [MSG_KEYNAME_F21] = "f21",230 [MSG_KEYNAME_F22] = "f22",231 [MSG_KEYNAME_F23] = "f23",232 [MSG_KEYNAME_F24] = "f24",233 [MSG_KEYNAME_KPCOMMA] = "keypad comma",234 [MSG_KEYNAME_LEFTMETA] = "left meta",235 [MSG_KEYNAME_RIGHTMETA] = "right meta",236 [MSG_KEYNAME_COMPOSE] = "compose",237 [MSG_KEYNAME_STOP] = "stop",238 [MSG_KEYNAME_AGAIN] = "again",239 [MSG_KEYNAME_PROPS] = "props",240 [MSG_KEYNAME_UNDO] = "undo",241 [MSG_KEYNAME_FRONT] = "front",242 [MSG_KEYNAME_COPY] = "copy",243 [MSG_KEYNAME_OPEN] = "open",244 [MSG_KEYNAME_PASTE] = "paste",245 [MSG_KEYNAME_FIND] = "find",246 [MSG_KEYNAME_CUT] = "cut",247 [MSG_KEYNAME_HELP] = "help",248 [MSG_KEYNAME_MENU] = "menu",249 [MSG_KEYNAME_CALC] = "calc",250 [MSG_KEYNAME_SETUP] = "setup",251 [MSG_KEYNAME_SLEEP] = "sleep",252 [MSG_KEYNAME_WAKEUP] = "wakeup",253 [MSG_KEYNAME_FILE] = "file",254 [MSG_KEYNAME_SENDFILE] = "send file",255 [MSG_KEYNAME_DELFILE] = "delete file",256 [MSG_KEYNAME_XFER] = "transfer",257 [MSG_KEYNAME_PROG1] = "prog1",258 [MSG_KEYNAME_PROG2] = "prog2",259 [MSG_KEYNAME_WWW] = "www",260 [MSG_KEYNAME_MSDOS] = "msdos",261 [MSG_KEYNAME_COFFEE] = "coffee",262 [MSG_KEYNAME_DIRECTION] = "direction",263 [MSG_KEYNAME_CYCLEWINDOWS] = "cycle windows",264 [MSG_KEYNAME_MAIL] = "mail",265 [MSG_KEYNAME_BOOKMARKS] = "bookmarks",266 [MSG_KEYNAME_COMPUTER] = "computer",267 [MSG_KEYNAME_BACK] = "back",268 [MSG_KEYNAME_FORWARD] = "forward",269 [MSG_KEYNAME_CLOSECD] = "close cd",270 [MSG_KEYNAME_EJECTCD] = "eject cd",271 [MSG_KEYNAME_EJECTCLOSE] = "eject close cd",272 [MSG_KEYNAME_NEXTSONG] = "next song",273 [MSG_KEYNAME_PLAYPAUSE] = "play pause",274 [MSG_KEYNAME_PREVSONG] = "previous song",275 [MSG_KEYNAME_STOPCD] = "stop cd",276 [MSG_KEYNAME_RECORD] = "record",277 [MSG_KEYNAME_REWIND] = "rewind",278 [MSG_KEYNAME_PHONE] = "phone",279 [MSG_KEYNAME_ISO] = "iso",280 [MSG_KEYNAME_CONFIG] = "config",281 [MSG_KEYNAME_HOMEPG] = "home page",282 [MSG_KEYNAME_REFRESH] = "refresh",283 [MSG_KEYNAME_EXIT] = "exit",284 [MSG_KEYNAME_MOVE] = "move",285 [MSG_KEYNAME_EDIT] = "edit",286 [MSG_KEYNAME_SCROLLUP] = "scroll up",287 [MSG_KEYNAME_SCROLLDN] = "scroll down",288 [MSG_KEYNAME_KPLEFTPAR] = "keypad left paren",289 [MSG_KEYNAME_KPRIGHTPAR] = "keypad right paren",290 291 /* Function names. */292 [MSG_FUNCNAME_ATTRIB_BLEEP_DEC] = "attribute bleep decrement",293 [MSG_FUNCNAME_ATTRIB_BLEEP_INC] = "attribute bleep increment",294 [MSG_FUNCNAME_BLEEPS_DEC] = "bleeps decrement",295 [MSG_FUNCNAME_BLEEPS_INC] = "bleeps increment",296 [MSG_FUNCNAME_CHAR_FIRST] = "character, first",297 [MSG_FUNCNAME_CHAR_LAST] = "character, last",298 [MSG_FUNCNAME_CHAR_CURRENT] = "character, say current",299 [MSG_FUNCNAME_CHAR_HEX_AND_DEC] = "character, say hex and decimal",300 [MSG_FUNCNAME_CHAR_NEXT] = "character, say next",301 [MSG_FUNCNAME_CHAR_PHONETIC] = "character, say phonetic",302 [MSG_FUNCNAME_CHAR_PREVIOUS] = "character, say previous",303 [MSG_FUNCNAME_CURSOR_PARK] = "cursor park",304 [MSG_FUNCNAME_CUT] = "cut",305 [MSG_FUNCNAME_EDIT_DELIM] = "edit delimiters",306 [MSG_FUNCNAME_EDIT_EXNUM] = "edit exnum",307 [MSG_FUNCNAME_EDIT_MOST] = "edit most",308 [MSG_FUNCNAME_EDIT_REPEATS] = "edit repeats",309 [MSG_FUNCNAME_EDIT_SOME] = "edit some",310 [MSG_FUNCNAME_GOTO] = "go to",311 [MSG_FUNCNAME_GOTO_BOTTOM] = "go to bottom edge",312 [MSG_FUNCNAME_GOTO_LEFT] = "go to left edge",313 [MSG_FUNCNAME_GOTO_RIGHT] = "go to right edge",314 [MSG_FUNCNAME_GOTO_TOP] = "go to top edge",315 [MSG_FUNCNAME_HELP] = "help",316 [MSG_FUNCNAME_LINE_SAY_CURRENT] = "line, say current",317 [MSG_FUNCNAME_LINE_SAY_NEXT] = "line, say next",318 [MSG_FUNCNAME_LINE_SAY_PREVIOUS] = "line, say previous",319 [MSG_FUNCNAME_LINE_SAY_WITH_INDENT] = "line, say with indent",320 [MSG_FUNCNAME_PASTE] = "paste",321 [MSG_FUNCNAME_PITCH_DEC] = "pitch decrement",322 [MSG_FUNCNAME_PITCH_INC] = "pitch increment",323 [MSG_FUNCNAME_PUNC_DEC] = "punctuation decrement",324 [MSG_FUNCNAME_PUNC_INC] = "punctuation increment",325 [MSG_FUNCNAME_PUNC_LEVEL_DEC] = "punc level decrement",326 [MSG_FUNCNAME_PUNC_LEVEL_INC] = "punc level increment",327 [MSG_FUNCNAME_QUIET] = "quiet",328 [MSG_FUNCNAME_RATE_DEC] = "rate decrement",329 [MSG_FUNCNAME_RATE_INC] = "rate increment",330 [MSG_FUNCNAME_READING_PUNC_DEC] = "reading punctuation decrement",331 [MSG_FUNCNAME_READING_PUNC_INC] = "reading punctuation increment",332 [MSG_FUNCNAME_SAY_ATTRIBUTES] = "say attributes",333 [MSG_FUNCNAME_SAY_FROM_LEFT] = "say from left",334 [MSG_FUNCNAME_SAY_FROM_TOP] = "say from top",335 [MSG_FUNCNAME_SAY_POSITION] = "say position",336 [MSG_FUNCNAME_SAY_SCREEN] = "say screen",337 [MSG_FUNCNAME_SAY_TO_BOTTOM] = "say to bottom",338 [MSG_FUNCNAME_SAY_TO_RIGHT] = "say to right",339 [MSG_FUNCNAME_SPEAKUP] = "speakup",340 [MSG_FUNCNAME_SPEAKUP_LOCK] = "speakup lock",341 [MSG_FUNCNAME_SPEAKUP_OFF] = "speakup off",342 [MSG_FUNCNAME_SPEECH_KILL] = "speech kill",343 [MSG_FUNCNAME_SPELL_DELAY_DEC] = "spell delay decrement",344 [MSG_FUNCNAME_SPELL_DELAY_INC] = "spell delay increment",345 [MSG_FUNCNAME_SPELL_WORD] = "spell word",346 [MSG_FUNCNAME_SPELL_WORD_PHONETICALLY] = "spell word phonetically",347 [MSG_FUNCNAME_TONE_DEC] = "tone decrement",348 [MSG_FUNCNAME_TONE_INC] = "tone increment",349 [MSG_FUNCNAME_VOICE_DEC] = "voice decrement",350 [MSG_FUNCNAME_VOICE_INC] = "voice increment",351 [MSG_FUNCNAME_VOLUME_DEC] = "volume decrement",352 [MSG_FUNCNAME_VOLUME_INC] = "volume increment",353 [MSG_FUNCNAME_WINDOW_CLEAR] = "window, clear",354 [MSG_FUNCNAME_WINDOW_SAY] = "window, say",355 [MSG_FUNCNAME_WINDOW_SET] = "window, set",356 [MSG_FUNCNAME_WINDOW_SILENCE] = "window, silence",357 [MSG_FUNCNAME_WORD_SAY_CURRENT] = "word, say current",358 [MSG_FUNCNAME_WORD_SAY_NEXT] = "word, say next",359 [MSG_FUNCNAME_WORD_SAY_PREVIOUS] = "word, say previous",360};361 362static struct msg_group_t all_groups[] = {363 {364 .name = "ctl_keys",365 .start = MSG_CTL_START,366 .end = MSG_CTL_END,367 },368 {369 .name = "colors",370 .start = MSG_COLORS_START,371 .end = MSG_COLORS_END,372 },373 {374 .name = "formatted",375 .start = MSG_FORMATTED_START,376 .end = MSG_FORMATTED_END,377 },378 {379 .name = "function_names",380 .start = MSG_FUNCNAMES_START,381 .end = MSG_FUNCNAMES_END,382 },383 {384 .name = "key_names",385 .start = MSG_KEYNAMES_START,386 .end = MSG_KEYNAMES_END,387 },388 {389 .name = "announcements",390 .start = MSG_ANNOUNCEMENTS_START,391 .end = MSG_ANNOUNCEMENTS_END,392 },393 {394 .name = "states",395 .start = MSG_STATES_START,396 .end = MSG_STATES_END,397 },398};399 400static const int num_groups = ARRAY_SIZE(all_groups);401 402char *spk_msg_get(enum msg_index_t index)403{404 return speakup_msgs[index];405}406 407/*408 * Function: next_specifier409 * Finds the start of the next format specifier in the argument string.410 * Return value: pointer to start of format411 * specifier, or NULL if no specifier exists.412 */413static char *next_specifier(char *input)414{415 int found = 0;416 char *next_percent = input;417 418 while (next_percent && !found) {419 next_percent = strchr(next_percent, '%');420 if (next_percent) {421 /* skip over doubled percent signs */422 while (next_percent[0] == '%' &&423 next_percent[1] == '%')424 next_percent += 2;425 if (*next_percent == '%')426 found = 1;427 else if (*next_percent == '\0')428 next_percent = NULL;429 }430 }431 432 return next_percent;433}434 435/* Skip over 0 or more flags. */436static char *skip_flags(char *input)437{438 while ((*input != '\0') && strchr(" 0+-#", *input))439 input++;440 return input;441}442 443/* Skip over width.precision, if it exists. */444static char *skip_width(char *input)445{446 while (isdigit(*input))447 input++;448 if (*input == '.') {449 input++;450 while (isdigit(*input))451 input++;452 }453 return input;454}455 456/*457 * Skip past the end of the conversion part.458 * Note that this code only accepts a handful of conversion specifiers:459 * c d s x and ld. Not accidental; these are exactly the ones used in460 * the default group of formatted messages.461 */462static char *skip_conversion(char *input)463{464 if ((input[0] == 'l') && (input[1] == 'd'))465 input += 2;466 else if ((*input != '\0') && strchr("cdsx", *input))467 input++;468 return input;469}470 471/*472 * Function: find_specifier_end473 * Return a pointer to the end of the format specifier.474 */475static char *find_specifier_end(char *input)476{477 input++; /* Advance over %. */478 input = skip_flags(input);479 input = skip_width(input);480 input = skip_conversion(input);481 return input;482}483 484/*485 * Function: compare_specifiers486 * Compare the format specifiers pointed to by *input1 and *input2.487 * Return true if they are the same, false otherwise.488 * Advance *input1 and *input2 so that they point to the character following489 * the end of the specifier.490 */491static bool compare_specifiers(char **input1, char **input2)492{493 bool same = false;494 char *end1 = find_specifier_end(*input1);495 char *end2 = find_specifier_end(*input2);496 size_t length1 = end1 - *input1;497 size_t length2 = end2 - *input2;498 499 if ((length1 == length2) && !memcmp(*input1, *input2, length1))500 same = true;501 502 *input1 = end1;503 *input2 = end2;504 return same;505}506 507/*508 * Function: fmt_validate509 * Check that two format strings contain the same number of format specifiers,510 * and that the order of specifiers is the same in both strings.511 * Return true if the condition holds, false if it doesn't.512 */513static bool fmt_validate(char *template, char *user)514{515 bool valid = true;516 bool still_comparing = true;517 char *template_ptr = template;518 char *user_ptr = user;519 520 while (still_comparing && valid) {521 template_ptr = next_specifier(template_ptr);522 user_ptr = next_specifier(user_ptr);523 if (template_ptr && user_ptr) {524 /* Both have at least one more specifier. */525 valid = compare_specifiers(&template_ptr, &user_ptr);526 } else {527 /* No more format specifiers in one or both strings. */528 still_comparing = false;529 /* See if one has more specifiers than the other. */530 if (template_ptr || user_ptr)531 valid = false;532 }533 }534 return valid;535}536 537/*538 * Function: msg_set539 * Description: Add a user-supplied message to the user_messages array.540 * The message text is copied to a memory area allocated with kmalloc.541 * If the function fails, then user_messages is untouched.542 * Arguments:543 * - index: a message number, as found in i18n.h.544 * - text: text of message. Not NUL-terminated.545 * - length: number of bytes in text.546 * Failure conditions:547 * -EINVAL - Invalid format specifiers in formatted message or illegal index.548 * -ENOMEM - Unable to allocate memory.549 */550ssize_t spk_msg_set(enum msg_index_t index, char *text, size_t length)551{552 char *newstr = NULL;553 unsigned long flags;554 555 if ((index < MSG_FIRST_INDEX) || (index >= MSG_LAST_INDEX))556 return -EINVAL;557 558 newstr = kmemdup_nul(text, length, GFP_KERNEL);559 if (!newstr)560 return -ENOMEM;561 562 if (index >= MSG_FORMATTED_START &&563 index <= MSG_FORMATTED_END &&564 !fmt_validate(speakup_default_msgs[index], newstr)) {565 kfree(newstr);566 return -EINVAL;567 }568 spin_lock_irqsave(&speakup_info.spinlock, flags);569 if (speakup_msgs[index] != speakup_default_msgs[index])570 kfree(speakup_msgs[index]);571 speakup_msgs[index] = newstr;572 spin_unlock_irqrestore(&speakup_info.spinlock, flags);573 return 0;574}575 576/*577 * Find a message group, given its name. Return a pointer to the structure578 * if found, or NULL otherwise.579 */580struct msg_group_t *spk_find_msg_group(const char *group_name)581{582 struct msg_group_t *group = NULL;583 int i;584 585 for (i = 0; i < num_groups; i++) {586 if (!strcmp(all_groups[i].name, group_name)) {587 group = &all_groups[i];588 break;589 }590 }591 return group;592}593 594void spk_reset_msg_group(struct msg_group_t *group)595{596 unsigned long flags;597 enum msg_index_t i;598 599 spin_lock_irqsave(&speakup_info.spinlock, flags);600 601 for (i = group->start; i <= group->end; i++) {602 if (speakup_msgs[i] != speakup_default_msgs[i])603 kfree(speakup_msgs[i]);604 speakup_msgs[i] = speakup_default_msgs[i];605 }606 spin_unlock_irqrestore(&speakup_info.spinlock, flags);607}608 609/* Called at initialization time, to establish default messages. */610void spk_initialize_msgs(void)611{612 memcpy(speakup_msgs, speakup_default_msgs,613 sizeof(speakup_default_msgs));614}615 616/* Free user-supplied strings when module is unloaded: */617void spk_free_user_msgs(void)618{619 enum msg_index_t index;620 unsigned long flags;621 622 spin_lock_irqsave(&speakup_info.spinlock, flags);623 for (index = MSG_FIRST_INDEX; index < MSG_LAST_INDEX; index++) {624 if (speakup_msgs[index] != speakup_default_msgs[index]) {625 kfree(speakup_msgs[index]);626 speakup_msgs[index] = speakup_default_msgs[index];627 }628 }629 spin_unlock_irqrestore(&speakup_info.spinlock, flags);630}631