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4377 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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 * @{
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 */
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/**
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 * @file
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 * @brief Stroke simulator.
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 *
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 * When simulating a keyboard using a serial TTY we need to convert the
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 * recognized strokes (such as Shift-A) to sequences of key presses and
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 * releases (such as 'press Shift, press A, release A, release Shift').
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 *
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 */
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#include <stroke.h>
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#include <kbd.h>
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#include <io/console.h>
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#include <io/keycode.h>
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/** Correspondence between modifers and the modifier keycodes. */
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static unsigned int mods_keys[][2] = {
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    { KM_LSHIFT, KC_LSHIFT },
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    { 0, 0 }
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};
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/** Simulate keystroke using sequences of key presses and releases. */
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void stroke_sim(unsigned mod, unsigned key)
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{
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    int i;
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    /* Simulate modifier presses. */
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    i = 0;
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    while (mods_keys[i][0] != 0) {
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        if (mod & mods_keys[i][0]) {
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            kbd_push_ev(KEY_PRESS, mods_keys[i][1]);
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        }
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        ++i;
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    }
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    /* Simulate key press and release. */
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    if (key != 0) {
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        kbd_push_ev(KEY_PRESS, key);
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        kbd_push_ev(KEY_RELEASE, key);
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    }
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    /* Simulate modifier releases. */
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    i = 0;
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    while (mods_keys[i][0] != 0) {
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        if (mod & mods_keys[i][0]) {
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            kbd_push_ev(KEY_RELEASE, mods_keys[i][1]);
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        }
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        ++i;
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    }
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}
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/**
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 * @}
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 */