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3923 svoboda 1
/*
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 * Copyright (c) 2009 Jiri Svoboda
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup kbd
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 * @brief   US QWERTY leyout.
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 * @{
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 */
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#include <kbd.h>
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#include <kbd/kbd.h>
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#include <kbd/keycode.h>
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#include <layout.h>
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static wchar_t layout_parse_ev(kbd_event_t *ev);
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layout_op_t us_qwerty_op = {
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    layout_parse_ev
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};
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static wchar_t map_lcase[] = {
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    [KC_Q] = 'q',
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    [KC_W] = 'w',
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    [KC_E] = 'e',
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    [KC_R] = 'r',
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    [KC_T] = 't',
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    [KC_Y] = 'y',
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    [KC_U] = 'u',
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    [KC_I] = 'i',
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    [KC_O] = 'o',
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    [KC_P] = 'p',
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    [KC_A] = 'a',
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    [KC_S] = 's',
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    [KC_D] = 'd',
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    [KC_F] = 'f',
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    [KC_G] = 'g',
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    [KC_H] = 'h',
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    [KC_J] = 'j',
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    [KC_K] = 'k',
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    [KC_L] = 'l',
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    [KC_Z] = 'z',
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    [KC_X] = 'x',
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    [KC_C] = 'c',
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    [KC_V] = 'v',
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    [KC_B] = 'b',
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    [KC_N] = 'n',
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    [KC_M] = 'm',
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};
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static wchar_t map_ucase[] = {
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    [KC_Q] = 'Q',
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    [KC_W] = 'W',
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    [KC_E] = 'E',
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    [KC_R] = 'R',
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    [KC_T] = 'T',
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    [KC_Y] = 'Y',
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    [KC_U] = 'U',
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    [KC_I] = 'I',
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    [KC_O] = 'O',
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    [KC_P] = 'P',
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    [KC_A] = 'A',
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    [KC_S] = 'S',
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    [KC_D] = 'D',
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    [KC_F] = 'F',
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    [KC_G] = 'G',
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    [KC_H] = 'H',
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    [KC_J] = 'J',
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    [KC_K] = 'K',
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    [KC_L] = 'L',
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    [KC_Z] = 'Z',
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    [KC_X] = 'X',
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    [KC_C] = 'C',
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    [KC_V] = 'V',
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    [KC_B] = 'B',
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    [KC_N] = 'N',
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    [KC_M] = 'M',
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};
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static wchar_t map_not_shifted[] = {
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    [KC_BACKTICK] = '`',
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    [KC_1] = '1',
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    [KC_2] = '2',
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    [KC_3] = '3',
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    [KC_4] = '4',
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    [KC_5] = '5',
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    [KC_6] = '6',
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    [KC_7] = '7',
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    [KC_8] = '8',
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    [KC_9] = '9',
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    [KC_0] = '0',
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    [KC_MINUS] = '-',
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    [KC_EQUALS] = '=',
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    [KC_LBRACKET] = '[',
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    [KC_RBRACKET] = ']',
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    [KC_SEMICOLON] = ';',
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    [KC_QUOTE] = '\'',
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    [KC_BACKSLASH] = '\\',
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    [KC_COMMA] = ',',
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    [KC_PERIOD] = '.',
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    [KC_SLASH] = '/',
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};
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static wchar_t map_shifted[] = {
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    [KC_BACKTICK] = '~',
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    [KC_1] = '!',
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    [KC_2] = '@',
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    [KC_3] = '#',
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    [KC_4] = '$',
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    [KC_5] = '%',
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    [KC_6] = '^',
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    [KC_7] = '&',
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    [KC_8] = '*',
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    [KC_9] = '(',
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    [KC_0] = ')',
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    [KC_MINUS] = '_',
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    [KC_EQUALS] = '+',
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    [KC_LBRACKET] = '{',
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    [KC_RBRACKET] = '}',
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    [KC_SEMICOLON] = ':',
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    [KC_QUOTE] = '"',
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    [KC_BACKSLASH] = '|',
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    [KC_COMMA] = '<',
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    [KC_PERIOD] = '>',
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    [KC_SLASH] = '?',
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};
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static wchar_t map_neutral[] = {
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    [KC_BACKSPACE] = '\b',
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    [KC_TAB] = '\t',
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    [KC_ENTER] = '\n',
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    [KC_SPACE] = ' ',
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    [KC_NSLASH] = '/',
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    [KC_NTIMES] = '*',
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    [KC_NMINUS] = '-',
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    [KC_NPLUS] = '+',
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    [KC_NENTER] = '\n'
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};
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static wchar_t map_numeric[] = {
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    [KC_N7] = '7',
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    [KC_N8] = '8',
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    [KC_N9] = '9',
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    [KC_N4] = '4',
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    [KC_N5] = '5',
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    [KC_N6] = '6',
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    [KC_N1] = '1',
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    [KC_N2] = '2',
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    [KC_N3] = '3',
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    [KC_N0] = '0',
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    [KC_NPERIOD] = '.'
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};
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static wchar_t translate(unsigned int key, wchar_t *map, size_t map_length)
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{
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    if (key >= map_length)
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        return 0;
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    return map[key];
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}
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static wchar_t layout_parse_ev(kbd_event_t *ev)
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{
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    wchar_t c;
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    /* Produce no characters when Ctrl or Alt is pressed. */
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    if ((ev->mods & (KM_CTRL | KM_ALT)) != 0)
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        return 0;
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    c = translate(ev->key, map_neutral, sizeof(map_neutral) / sizeof(wchar_t));
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    if (c != 0)
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        return c;
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    if (((ev->mods & KM_SHIFT) != 0) ^ ((ev->mods & KM_CAPS_LOCK) != 0))
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        c = translate(ev->key, map_ucase, sizeof(map_ucase) / sizeof(wchar_t));
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    else
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        c = translate(ev->key, map_lcase, sizeof(map_lcase) / sizeof(wchar_t));
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4236 svoboda 217
    if (c != 0)
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        return c;
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    if ((ev->mods & KM_SHIFT) != 0)
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        c = translate(ev->key, map_shifted, sizeof(map_shifted) / sizeof(wchar_t));
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    else
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        c = translate(ev->key, map_not_shifted, sizeof(map_not_shifted) / sizeof(wchar_t));
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    if (c != 0)
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        return c;
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    if ((ev->mods & KM_NUM_LOCK) != 0)
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        c = translate(ev->key, map_numeric, sizeof(map_numeric) / sizeof(wchar_t));
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    else
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        c = 0;
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    return c;
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}
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/**
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 * @}
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 */