1
linux/drivers/accessibility/speakup/i18n.c
Colin Ian King f83461e658 speakup: use C99 syntax for array initializers
The older obsolete array initializer syntax is currently being used
for some of the array elements. Fix this by using the preferred C99
array initializers syntax.

Fixes: 5b5140bf51 ("speakup: Separate out translations for bright colors names")
Reviewed-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210715163122.62220-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-07-21 13:45:53 +02:00

631 lines
19 KiB
C

// SPDX-License-Identifier: GPL-2.0
/* Internationalization implementation. Includes definitions of English
* string arrays, and the i18n pointer.
*/
#include <linux/slab.h> /* For kmalloc. */
#include <linux/ctype.h>
#include <linux/module.h>
#include <linux/string.h>
#include "speakup.h"
#include "spk_priv.h"
static char *speakup_msgs[MSG_LAST_INDEX];
static char *speakup_default_msgs[MSG_LAST_INDEX] = {
[MSG_BLANK] = "blank",
[MSG_IAM_ALIVE] = "I'm aLive!",
[MSG_YOU_KILLED_SPEAKUP] = "You killed speakup!",
[MSG_HEY_THATS_BETTER] = "hey. That's better!",
[MSG_YOU_TURNED_ME_OFF] = "You turned me off!",
[MSG_PARKED] = "parked!",
[MSG_UNPARKED] = "unparked!",
[MSG_MARK] = "mark",
[MSG_CUT] = "cut",
[MSG_MARK_CLEARED] = "mark, cleared",
[MSG_PASTE] = "paste",
[MSG_BRIGHT] = "bright",
[MSG_ON_BLINKING] = "on blinking",
[MSG_OFF] = "off",
[MSG_ON] = "on",
[MSG_NO_WINDOW] = "no window",
[MSG_CURSORING_OFF] = "cursoring off",
[MSG_CURSORING_ON] = "cursoring on",
[MSG_HIGHLIGHT_TRACKING] = "highlight tracking",
[MSG_READ_WINDOW] = "read windo",
[MSG_READ_ALL] = "read all",
[MSG_EDIT_DONE] = "edit done",
[MSG_WINDOW_ALREADY_SET] = "window already set, clear then reset",
[MSG_END_BEFORE_START] = "error end before start",
[MSG_WINDOW_CLEARED] = "window cleared",
[MSG_WINDOW_SILENCED] = "window silenced",
[MSG_WINDOW_SILENCE_DISABLED] = "window silence disabled",
[MSG_ERROR] = "error",
[MSG_GOTO_CANCELED] = "goto canceled",
[MSG_GOTO] = "go to?",
[MSG_LEAVING_HELP] = "leaving help",
[MSG_IS_UNASSIGNED] = "is unassigned",
[MSG_HELP_INFO] =
"press space to exit, up or down to scroll, or a letter to go to a command",
[MSG_EDGE_TOP] = "top,",
[MSG_EDGE_BOTTOM] = "bottom,",
[MSG_EDGE_LEFT] = "left,",
[MSG_EDGE_RIGHT] = "right,",
[MSG_NUMBER] = "number",
[MSG_SPACE] = "space",
[MSG_START] = "start",
[MSG_END] = "end",
[MSG_CTRL] = "control-",
[MSG_DISJUNCTION] = "or",
/* Messages with embedded format specifiers. */
[MSG_POS_INFO] = "line %ld, col %ld, t t y %d",
[MSG_CHAR_INFO] = "hex %02x, decimal %d",
[MSG_REPEAT_DESC] = "times %d .",
[MSG_REPEAT_DESC2] = "repeated %d .",
[MSG_WINDOW_LINE] = "window is line %d",
[MSG_WINDOW_BOUNDARY] = "%s at line %d, column %d",
[MSG_EDIT_PROMPT] = "edit %s, press space when done",
[MSG_NO_COMMAND] = "no commands for %c",
[MSG_KEYDESC] = "is %s",
/* Control keys. */
/* Most of these duplicate the entries in state names. */
[MSG_CTL_SHIFT] = "shift",
[MSG_CTL_ALTGR] = "altgr",
[MSG_CTL_CONTROL] = "control",
[MSG_CTL_ALT] = "alt",
[MSG_CTL_LSHIFT] = "l shift",
[MSG_CTL_SPEAKUP] = "speakup",
[MSG_CTL_LCONTROL] = "l control",
[MSG_CTL_RCONTROL] = "r control",
[MSG_CTL_CAPSSHIFT] = "caps shift",
/* Color names. */
[MSG_COLOR_BLACK] = "black",
[MSG_COLOR_BLUE] = "blue",
[MSG_COLOR_GREEN] = "green",
[MSG_COLOR_CYAN] = "cyan",
[MSG_COLOR_RED] = "red",
[MSG_COLOR_MAGENTA] = "magenta",
[MSG_COLOR_YELLOW] = "yellow",
[MSG_COLOR_WHITE] = "white",
[MSG_COLOR_GREY] = "grey",
[MSG_COLOR_BRIGHTBLUE] = "bright blue",
[MSG_COLOR_BRIGHTGREEN] = "bright green",
[MSG_COLOR_BRIGHTCYAN] = "bright cyan",
[MSG_COLOR_BRIGHTRED] = "bright red",
[MSG_COLOR_BRIGHTMAGENTA] = "bright magenta",
[MSG_COLOR_BRIGHTYELLOW] = "bright yellow",
[MSG_COLOR_BRIGHTWHITE] = "bright white",
/* Names of key states. */
[MSG_STATE_DOUBLE] = "double",
[MSG_STATE_SPEAKUP] = "speakup",
[MSG_STATE_ALT] = "alt",
[MSG_STATE_CONTROL] = "ctrl",
[MSG_STATE_ALTGR] = "altgr",
[MSG_STATE_SHIFT] = "shift",
/* Key names. */
[MSG_KEYNAME_ESC] = "escape",
[MSG_KEYNAME_1] = "1",
[MSG_KEYNAME_2] = "2",
[MSG_KEYNAME_3] = "3",
[MSG_KEYNAME_4] = "4",
[MSG_KEYNAME_5] = "5",
[MSG_KEYNAME_6] = "6",
[MSG_KEYNAME_7] = "7",
[MSG_KEYNAME_8] = "8",
[MSG_KEYNAME_9] = "9",
[MSG_KEYNAME_0] = "0",
[MSG_KEYNAME_DASH] = "minus",
[MSG_KEYNAME_EQUAL] = "equal",
[MSG_KEYNAME_BS] = "back space",
[MSG_KEYNAME_TAB] = "tab",
[MSG_KEYNAME_Q] = "q",
[MSG_KEYNAME_W] = "w",
[MSG_KEYNAME_E] = "e",
[MSG_KEYNAME_R] = "r",
[MSG_KEYNAME_T] = "t",
[MSG_KEYNAME_Y] = "y",
[MSG_KEYNAME_U] = "u",
[MSG_KEYNAME_I] = "i",
[MSG_KEYNAME_O] = "o",
[MSG_KEYNAME_P] = "p",
[MSG_KEYNAME_LEFTBRACE] = "left brace",
[MSG_KEYNAME_RIGHTBRACE] = "right brace",
[MSG_KEYNAME_ENTER] = "enter",
[MSG_KEYNAME_LEFTCTRL] = "left control",
[MSG_KEYNAME_A] = "a",
[MSG_KEYNAME_S] = "s",
[MSG_KEYNAME_D] = "d",
[MSG_KEYNAME_F] = "f",
[MSG_KEYNAME_G] = "g",
[MSG_KEYNAME_H] = "h",
[MSG_KEYNAME_J] = "j",
[MSG_KEYNAME_K] = "k",
[MSG_KEYNAME_L] = "l",
[MSG_KEYNAME_SEMICOLON] = "semicolon",
[MSG_KEYNAME_SINGLEQUOTE] = "apostrophe",
[MSG_KEYNAME_GRAVE] = "accent",
[MSG_KEYNAME_LEFTSHFT] = "left shift",
[MSG_KEYNAME_BACKSLASH] = "back slash",
[MSG_KEYNAME_Z] = "z",
[MSG_KEYNAME_X] = "x",
[MSG_KEYNAME_C] = "c",
[MSG_KEYNAME_V] = "v",
[MSG_KEYNAME_B] = "b",
[MSG_KEYNAME_N] = "n",
[MSG_KEYNAME_M] = "m",
[MSG_KEYNAME_COMMA] = "comma",
[MSG_KEYNAME_DOT] = "dot",
[MSG_KEYNAME_SLASH] = "slash",
[MSG_KEYNAME_RIGHTSHFT] = "right shift",
[MSG_KEYNAME_KPSTAR] = "keypad asterisk",
[MSG_KEYNAME_LEFTALT] = "left alt",
[MSG_KEYNAME_SPACE] = "space",
[MSG_KEYNAME_CAPSLOCK] = "caps lock",
[MSG_KEYNAME_F1] = "f1",
[MSG_KEYNAME_F2] = "f2",
[MSG_KEYNAME_F3] = "f3",
[MSG_KEYNAME_F4] = "f4",
[MSG_KEYNAME_F5] = "f5",
[MSG_KEYNAME_F6] = "f6",
[MSG_KEYNAME_F7] = "f7",
[MSG_KEYNAME_F8] = "f8",
[MSG_KEYNAME_F9] = "f9",
[MSG_KEYNAME_F10] = "f10",
[MSG_KEYNAME_NUMLOCK] = "num lock",
[MSG_KEYNAME_SCROLLLOCK] = "scroll lock",
[MSG_KEYNAME_KP7] = "keypad 7",
[MSG_KEYNAME_KP8] = "keypad 8",
[MSG_KEYNAME_KP9] = "keypad 9",
[MSG_KEYNAME_KPMINUS] = "keypad minus",
[MSG_KEYNAME_KP4] = "keypad 4",
[MSG_KEYNAME_KP5] = "keypad 5",
[MSG_KEYNAME_KP6] = "keypad 6",
[MSG_KEYNAME_KPPLUS] = "keypad plus",
[MSG_KEYNAME_KP1] = "keypad 1",
[MSG_KEYNAME_KP2] = "keypad 2",
[MSG_KEYNAME_KP3] = "keypad 3",
[MSG_KEYNAME_KP0] = "keypad 0",
[MSG_KEYNAME_KPDOT] = "keypad dot",
[MSG_KEYNAME_103RD] = "103rd",
[MSG_KEYNAME_F13] = "f13",
[MSG_KEYNAME_102ND] = "102nd",
[MSG_KEYNAME_F11] = "f11",
[MSG_KEYNAME_F12] = "f12",
[MSG_KEYNAME_F14] = "f14",
[MSG_KEYNAME_F15] = "f15",
[MSG_KEYNAME_F16] = "f16",
[MSG_KEYNAME_F17] = "f17",
[MSG_KEYNAME_F18] = "f18",
[MSG_KEYNAME_F19] = "f19",
[MSG_KEYNAME_F20] = "f20",
[MSG_KEYNAME_KPENTER] = "keypad enter",
[MSG_KEYNAME_RIGHTCTRL] = "right control",
[MSG_KEYNAME_KPSLASH] = "keypad slash",
[MSG_KEYNAME_SYSRQ] = "sysrq",
[MSG_KEYNAME_RIGHTALT] = "right alt",
[MSG_KEYNAME_LF] = "line feed",
[MSG_KEYNAME_HOME] = "home",
[MSG_KEYNAME_UP] = "up",
[MSG_KEYNAME_PGUP] = "page up",
[MSG_KEYNAME_LEFT] = "left",
[MSG_KEYNAME_RIGHT] = "right",
[MSG_KEYNAME_END] = "end",
[MSG_KEYNAME_DOWN] = "down",
[MSG_KEYNAME_PGDN] = "page down",
[MSG_KEYNAME_INS] = "insert",
[MSG_KEYNAME_DEL] = "delete",
[MSG_KEYNAME_MACRO] = "macro",
[MSG_KEYNAME_MUTE] = "mute",
[MSG_KEYNAME_VOLDOWN] = "volume down",
[MSG_KEYNAME_VOLUP] = "volume up",
[MSG_KEYNAME_POWER] = "power",
[MSG_KEYNAME_KPEQUAL] = "keypad equal",
[MSG_KEYNAME_KPPLUSDASH] = "keypad plusminus",
[MSG_KEYNAME_PAUSE] = "pause",
[MSG_KEYNAME_F21] = "f21",
[MSG_KEYNAME_F22] = "f22",
[MSG_KEYNAME_F23] = "f23",
[MSG_KEYNAME_F24] = "f24",
[MSG_KEYNAME_KPCOMMA] = "keypad comma",
[MSG_KEYNAME_LEFTMETA] = "left meta",
[MSG_KEYNAME_RIGHTMETA] = "right meta",
[MSG_KEYNAME_COMPOSE] = "compose",
[MSG_KEYNAME_STOP] = "stop",
[MSG_KEYNAME_AGAIN] = "again",
[MSG_KEYNAME_PROPS] = "props",
[MSG_KEYNAME_UNDO] = "undo",
[MSG_KEYNAME_FRONT] = "front",
[MSG_KEYNAME_COPY] = "copy",
[MSG_KEYNAME_OPEN] = "open",
[MSG_KEYNAME_PASTE] = "paste",
[MSG_KEYNAME_FIND] = "find",
[MSG_KEYNAME_CUT] = "cut",
[MSG_KEYNAME_HELP] = "help",
[MSG_KEYNAME_MENU] = "menu",
[MSG_KEYNAME_CALC] = "calc",
[MSG_KEYNAME_SETUP] = "setup",
[MSG_KEYNAME_SLEEP] = "sleep",
[MSG_KEYNAME_WAKEUP] = "wakeup",
[MSG_KEYNAME_FILE] = "file",
[MSG_KEYNAME_SENDFILE] = "send file",
[MSG_KEYNAME_DELFILE] = "delete file",
[MSG_KEYNAME_XFER] = "transfer",
[MSG_KEYNAME_PROG1] = "prog1",
[MSG_KEYNAME_PROG2] = "prog2",
[MSG_KEYNAME_WWW] = "www",
[MSG_KEYNAME_MSDOS] = "msdos",
[MSG_KEYNAME_COFFEE] = "coffee",
[MSG_KEYNAME_DIRECTION] = "direction",
[MSG_KEYNAME_CYCLEWINDOWS] = "cycle windows",
[MSG_KEYNAME_MAIL] = "mail",
[MSG_KEYNAME_BOOKMARKS] = "bookmarks",
[MSG_KEYNAME_COMPUTER] = "computer",
[MSG_KEYNAME_BACK] = "back",
[MSG_KEYNAME_FORWARD] = "forward",
[MSG_KEYNAME_CLOSECD] = "close cd",
[MSG_KEYNAME_EJECTCD] = "eject cd",
[MSG_KEYNAME_EJECTCLOSE] = "eject close cd",
[MSG_KEYNAME_NEXTSONG] = "next song",
[MSG_KEYNAME_PLAYPAUSE] = "play pause",
[MSG_KEYNAME_PREVSONG] = "previous song",
[MSG_KEYNAME_STOPCD] = "stop cd",
[MSG_KEYNAME_RECORD] = "record",
[MSG_KEYNAME_REWIND] = "rewind",
[MSG_KEYNAME_PHONE] = "phone",
[MSG_KEYNAME_ISO] = "iso",
[MSG_KEYNAME_CONFIG] = "config",
[MSG_KEYNAME_HOMEPG] = "home page",
[MSG_KEYNAME_REFRESH] = "refresh",
[MSG_KEYNAME_EXIT] = "exit",
[MSG_KEYNAME_MOVE] = "move",
[MSG_KEYNAME_EDIT] = "edit",
[MSG_KEYNAME_SCROLLUP] = "scroll up",
[MSG_KEYNAME_SCROLLDN] = "scroll down",
[MSG_KEYNAME_KPLEFTPAR] = "keypad left paren",
[MSG_KEYNAME_KPRIGHTPAR] = "keypad right paren",
/* Function names. */
[MSG_FUNCNAME_ATTRIB_BLEEP_DEC] = "attribute bleep decrement",
[MSG_FUNCNAME_ATTRIB_BLEEP_INC] = "attribute bleep increment",
[MSG_FUNCNAME_BLEEPS_DEC] = "bleeps decrement",
[MSG_FUNCNAME_BLEEPS_INC] = "bleeps increment",
[MSG_FUNCNAME_CHAR_FIRST] = "character, first",
[MSG_FUNCNAME_CHAR_LAST] = "character, last",
[MSG_FUNCNAME_CHAR_CURRENT] = "character, say current",
[MSG_FUNCNAME_CHAR_HEX_AND_DEC] = "character, say hex and decimal",
[MSG_FUNCNAME_CHAR_NEXT] = "character, say next",
[MSG_FUNCNAME_CHAR_PHONETIC] = "character, say phonetic",
[MSG_FUNCNAME_CHAR_PREVIOUS] = "character, say previous",
[MSG_FUNCNAME_CURSOR_PARK] = "cursor park",
[MSG_FUNCNAME_CUT] = "cut",
[MSG_FUNCNAME_EDIT_DELIM] = "edit delimiters",
[MSG_FUNCNAME_EDIT_EXNUM] = "edit exnum",
[MSG_FUNCNAME_EDIT_MOST] = "edit most",
[MSG_FUNCNAME_EDIT_REPEATS] = "edit repeats",
[MSG_FUNCNAME_EDIT_SOME] = "edit some",
[MSG_FUNCNAME_GOTO] = "go to",
[MSG_FUNCNAME_GOTO_BOTTOM] = "go to bottom edge",
[MSG_FUNCNAME_GOTO_LEFT] = "go to left edge",
[MSG_FUNCNAME_GOTO_RIGHT] = "go to right edge",
[MSG_FUNCNAME_GOTO_TOP] = "go to top edge",
[MSG_FUNCNAME_HELP] = "help",
[MSG_FUNCNAME_LINE_SAY_CURRENT] = "line, say current",
[MSG_FUNCNAME_LINE_SAY_NEXT] = "line, say next",
[MSG_FUNCNAME_LINE_SAY_PREVIOUS] = "line, say previous",
[MSG_FUNCNAME_LINE_SAY_WITH_INDENT] = "line, say with indent",
[MSG_FUNCNAME_PASTE] = "paste",
[MSG_FUNCNAME_PITCH_DEC] = "pitch decrement",
[MSG_FUNCNAME_PITCH_INC] = "pitch increment",
[MSG_FUNCNAME_PUNC_DEC] = "punctuation decrement",
[MSG_FUNCNAME_PUNC_INC] = "punctuation increment",
[MSG_FUNCNAME_PUNC_LEVEL_DEC] = "punc level decrement",
[MSG_FUNCNAME_PUNC_LEVEL_INC] = "punc level increment",
[MSG_FUNCNAME_QUIET] = "quiet",
[MSG_FUNCNAME_RATE_DEC] = "rate decrement",
[MSG_FUNCNAME_RATE_INC] = "rate increment",
[MSG_FUNCNAME_READING_PUNC_DEC] = "reading punctuation decrement",
[MSG_FUNCNAME_READING_PUNC_INC] = "reading punctuation increment",
[MSG_FUNCNAME_SAY_ATTRIBUTES] = "say attributes",
[MSG_FUNCNAME_SAY_FROM_LEFT] = "say from left",
[MSG_FUNCNAME_SAY_FROM_TOP] = "say from top",
[MSG_FUNCNAME_SAY_POSITION] = "say position",
[MSG_FUNCNAME_SAY_SCREEN] = "say screen",
[MSG_FUNCNAME_SAY_TO_BOTTOM] = "say to bottom",
[MSG_FUNCNAME_SAY_TO_RIGHT] = "say to right",
[MSG_FUNCNAME_SPEAKUP] = "speakup",
[MSG_FUNCNAME_SPEAKUP_LOCK] = "speakup lock",
[MSG_FUNCNAME_SPEAKUP_OFF] = "speakup off",
[MSG_FUNCNAME_SPEECH_KILL] = "speech kill",
[MSG_FUNCNAME_SPELL_DELAY_DEC] = "spell delay decrement",
[MSG_FUNCNAME_SPELL_DELAY_INC] = "spell delay increment",
[MSG_FUNCNAME_SPELL_WORD] = "spell word",
[MSG_FUNCNAME_SPELL_WORD_PHONETICALLY] = "spell word phonetically",
[MSG_FUNCNAME_TONE_DEC] = "tone decrement",
[MSG_FUNCNAME_TONE_INC] = "tone increment",
[MSG_FUNCNAME_VOICE_DEC] = "voice decrement",
[MSG_FUNCNAME_VOICE_INC] = "voice increment",
[MSG_FUNCNAME_VOLUME_DEC] = "volume decrement",
[MSG_FUNCNAME_VOLUME_INC] = "volume increment",
[MSG_FUNCNAME_WINDOW_CLEAR] = "window, clear",
[MSG_FUNCNAME_WINDOW_SAY] = "window, say",
[MSG_FUNCNAME_WINDOW_SET] = "window, set",
[MSG_FUNCNAME_WINDOW_SILENCE] = "window, silence",
[MSG_FUNCNAME_WORD_SAY_CURRENT] = "word, say current",
[MSG_FUNCNAME_WORD_SAY_NEXT] = "word, say next",
[MSG_FUNCNAME_WORD_SAY_PREVIOUS] = "word, say previous",
};
static struct msg_group_t all_groups[] = {
{
.name = "ctl_keys",
.start = MSG_CTL_START,
.end = MSG_CTL_END,
},
{
.name = "colors",
.start = MSG_COLORS_START,
.end = MSG_COLORS_END,
},
{
.name = "formatted",
.start = MSG_FORMATTED_START,
.end = MSG_FORMATTED_END,
},
{
.name = "function_names",
.start = MSG_FUNCNAMES_START,
.end = MSG_FUNCNAMES_END,
},
{
.name = "key_names",
.start = MSG_KEYNAMES_START,
.end = MSG_KEYNAMES_END,
},
{
.name = "announcements",
.start = MSG_ANNOUNCEMENTS_START,
.end = MSG_ANNOUNCEMENTS_END,
},
{
.name = "states",
.start = MSG_STATES_START,
.end = MSG_STATES_END,
},
};
static const int num_groups = ARRAY_SIZE(all_groups);
char *spk_msg_get(enum msg_index_t index)
{
return speakup_msgs[index];
}
/*
* Function: next_specifier
* Finds the start of the next format specifier in the argument string.
* Return value: pointer to start of format
* specifier, or NULL if no specifier exists.
*/
static char *next_specifier(char *input)
{
int found = 0;
char *next_percent = input;
while (next_percent && !found) {
next_percent = strchr(next_percent, '%');
if (next_percent) {
/* skip over doubled percent signs */
while (next_percent[0] == '%' &&
next_percent[1] == '%')
next_percent += 2;
if (*next_percent == '%')
found = 1;
else if (*next_percent == '\0')
next_percent = NULL;
}
}
return next_percent;
}
/* Skip over 0 or more flags. */
static char *skip_flags(char *input)
{
while ((*input != '\0') && strchr(" 0+-#", *input))
input++;
return input;
}
/* Skip over width.precision, if it exists. */
static char *skip_width(char *input)
{
while (isdigit(*input))
input++;
if (*input == '.') {
input++;
while (isdigit(*input))
input++;
}
return input;
}
/*
* Skip past the end of the conversion part.
* Note that this code only accepts a handful of conversion specifiers:
* c d s x and ld. Not accidental; these are exactly the ones used in
* the default group of formatted messages.
*/
static char *skip_conversion(char *input)
{
if ((input[0] == 'l') && (input[1] == 'd'))
input += 2;
else if ((*input != '\0') && strchr("cdsx", *input))
input++;
return input;
}
/*
* Function: find_specifier_end
* Return a pointer to the end of the format specifier.
*/
static char *find_specifier_end(char *input)
{
input++; /* Advance over %. */
input = skip_flags(input);
input = skip_width(input);
input = skip_conversion(input);
return input;
}
/*
* Function: compare_specifiers
* Compare the format specifiers pointed to by *input1 and *input2.
* Return true if they are the same, false otherwise.
* Advance *input1 and *input2 so that they point to the character following
* the end of the specifier.
*/
static bool compare_specifiers(char **input1, char **input2)
{
bool same = false;
char *end1 = find_specifier_end(*input1);
char *end2 = find_specifier_end(*input2);
size_t length1 = end1 - *input1;
size_t length2 = end2 - *input2;
if ((length1 == length2) && !memcmp(*input1, *input2, length1))
same = true;
*input1 = end1;
*input2 = end2;
return same;
}
/*
* Function: fmt_validate
* Check that two format strings contain the same number of format specifiers,
* and that the order of specifiers is the same in both strings.
* Return true if the condition holds, false if it doesn't.
*/
static bool fmt_validate(char *template, char *user)
{
bool valid = true;
bool still_comparing = true;
char *template_ptr = template;
char *user_ptr = user;
while (still_comparing && valid) {
template_ptr = next_specifier(template_ptr);
user_ptr = next_specifier(user_ptr);
if (template_ptr && user_ptr) {
/* Both have at least one more specifier. */
valid = compare_specifiers(&template_ptr, &user_ptr);
} else {
/* No more format specifiers in one or both strings. */
still_comparing = false;
/* See if one has more specifiers than the other. */
if (template_ptr || user_ptr)
valid = false;
}
}
return valid;
}
/*
* Function: msg_set
* Description: Add a user-supplied message to the user_messages array.
* The message text is copied to a memory area allocated with kmalloc.
* If the function fails, then user_messages is untouched.
* Arguments:
* - index: a message number, as found in i18n.h.
* - text: text of message. Not NUL-terminated.
* - length: number of bytes in text.
* Failure conditions:
* -EINVAL - Invalid format specifiers in formatted message or illegal index.
* -ENOMEM - Unable to allocate memory.
*/
ssize_t spk_msg_set(enum msg_index_t index, char *text, size_t length)
{
char *newstr = NULL;
unsigned long flags;
if ((index < MSG_FIRST_INDEX) || (index >= MSG_LAST_INDEX))
return -EINVAL;
newstr = kmemdup_nul(text, length, GFP_KERNEL);
if (!newstr)
return -ENOMEM;
if (index >= MSG_FORMATTED_START &&
index <= MSG_FORMATTED_END &&
!fmt_validate(speakup_default_msgs[index], newstr)) {
kfree(newstr);
return -EINVAL;
}
spin_lock_irqsave(&speakup_info.spinlock, flags);
if (speakup_msgs[index] != speakup_default_msgs[index])
kfree(speakup_msgs[index]);
speakup_msgs[index] = newstr;
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
return 0;
}
/*
* Find a message group, given its name. Return a pointer to the structure
* if found, or NULL otherwise.
*/
struct msg_group_t *spk_find_msg_group(const char *group_name)
{
struct msg_group_t *group = NULL;
int i;
for (i = 0; i < num_groups; i++) {
if (!strcmp(all_groups[i].name, group_name)) {
group = &all_groups[i];
break;
}
}
return group;
}
void spk_reset_msg_group(struct msg_group_t *group)
{
unsigned long flags;
enum msg_index_t i;
spin_lock_irqsave(&speakup_info.spinlock, flags);
for (i = group->start; i <= group->end; i++) {
if (speakup_msgs[i] != speakup_default_msgs[i])
kfree(speakup_msgs[i]);
speakup_msgs[i] = speakup_default_msgs[i];
}
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}
/* Called at initialization time, to establish default messages. */
void spk_initialize_msgs(void)
{
memcpy(speakup_msgs, speakup_default_msgs,
sizeof(speakup_default_msgs));
}
/* Free user-supplied strings when module is unloaded: */
void spk_free_user_msgs(void)
{
enum msg_index_t index;
unsigned long flags;
spin_lock_irqsave(&speakup_info.spinlock, flags);
for (index = MSG_FIRST_INDEX; index < MSG_LAST_INDEX; index++) {
if (speakup_msgs[index] != speakup_default_msgs[index]) {
kfree(speakup_msgs[index]);
speakup_msgs[index] = speakup_default_msgs[index];
}
}
spin_unlock_irqrestore(&speakup_info.spinlock, flags);
}