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/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
vt100_cls
vt100_sgr
vt100_sgr5
vt100_set_pos
vt100_set_sgr
vt100_create
vt100_destroy
vt100_get_dimensions
vt100_yield
vt100_claim
vt100_goto
vt100_set_attr
vt100_cursor_visibility
vt100_putuchar
vt100_flush
vt100_key
vt100_rcvd_1b
vt100_rcvd_1b4f
vt100_rcvd_1b5b
vt100_rcvd_1b5b31
vt100_rcvd_1b5b3135
vt100_rcvd_1b5b3137
vt100_rcvd_1b5b3138
vt100_rcvd_1b5b3139
vt100_rcvd_1b5b313b
vt100_rcvd_1b5b313b32
vt100_rcvd_1b5b313b33
vt100_rcvd_1b5b32
vt100_rcvd_1b5b3230
vt100_rcvd_1b5b3231
vt100_rcvd_1b5b3233
vt100_rcvd_1b5b3234
vt100_rcvd_1b5b3235
vt100_rcvd_1b5b3238
vt100_rcvd_1b5b35
vt100_rcvd_1b5b33
vt100_rcvd_1b5b36
vt100_rcvd_base
vt100_rcvd_char
/*
 * Copyright (c) 2024 Jiri Svoboda
 * Copyright (c) 2011 Martin Decky
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * - The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/** @addtogroup libvt
 * @{
 */

#include <errno.h>
#include <io/color.h>
#include <io/keycode.h>
#include <stdio.h>
#include <stdlib.h>
#include <vt/vt100.h>

/** Map console colors to VT100 color indices */
sgr_color_index_t color_map[] = {
        [COLOR_BLACK]   = CI_BLACK,
        [COLOR_BLUE]    = CI_BLUE,
        [COLOR_GREEN]   = CI_GREEN,
        [COLOR_CYAN]    = CI_CYAN,
        [COLOR_RED]     = CI_RED,
        [COLOR_MAGENTA] = CI_MAGENTA,
        [COLOR_YELLOW]  = CI_BROWN,
        [COLOR_WHITE]   = CI_WHITE
};

/** Clear screen.
 *
 * @param vt VT instance
 */
void vt100_cls(vt100_t *vt)
{
        vt->cb->control_puts(vt->arg, "\033[2J");
}

/** ECMA-48 Set Graphics Rendition.
 *
 * @param vt VT instance
 * @param mode SGR mode number
 */
static void vt100_sgr(vt100_t *vt, unsigned int mode)
{
        char control[MAX_CONTROL];

        snprintf(control, MAX_CONTROL, "\033[%um", mode);
        vt->cb->control_puts(vt->arg, control);
}

/** Set Graphics Rendition with 5 arguments.
 *
 * @param vt VT instance
 * @param a1 First argument
 * @param a2 Second argument
 * @param a3 Third argument
 * @param a4 Fourth argument
 * @param a5 Fifth argument
 */
static void vt100_sgr5(vt100_t *vt, unsigned a1, unsigned a2,
    unsigned a3, unsigned a4, unsigned a5)
{
        char control[MAX_CONTROL];

        snprintf(control, MAX_CONTROL, "\033[%u;%u;%u;%u;%um",
            a1, a2, a3, a4, a5);
        vt->cb->control_puts(vt->arg, control);
}

/** Set cussor position.
 *
 * @param vt VT instance
 * @param col Column (starting from 0)
 * @param row Row (starting from 0)
 */
void vt100_set_pos(vt100_t *vt, sysarg_t col, sysarg_t row)
{
        char control[MAX_CONTROL];

        snprintf(control, MAX_CONTROL, "\033[%" PRIun ";%" PRIun "f",
            row + 1, col + 1);
        vt->cb->control_puts(vt->arg, control);
}

/** Set graphics rendition based on attributes,
 *
 * @param vt VT instance
 * @param attrs Character attributes
 */
void vt100_set_sgr(vt100_t *vt, char_attrs_t attrs)
{
        unsigned color;

        switch (attrs.type) {
        case CHAR_ATTR_STYLE:
                switch (attrs.val.style) {
                case STYLE_NORMAL:
                        vt100_sgr(vt, SGR_RESET);
                        vt100_sgr(vt, SGR_BGCOLOR + CI_WHITE);
                        vt100_sgr(vt, SGR_FGCOLOR + CI_BLACK);
                        break;
                case STYLE_EMPHASIS:
                        vt100_sgr(vt, SGR_RESET);
                        vt100_sgr(vt, SGR_BGCOLOR + CI_WHITE);
                        vt100_sgr(vt, SGR_FGCOLOR + CI_RED);
                        vt100_sgr(vt, SGR_BOLD);
                        break;
                case STYLE_INVERTED:
                        vt100_sgr(vt, SGR_RESET);
                        vt100_sgr(vt, SGR_BGCOLOR + CI_BLACK);
                        vt100_sgr(vt, SGR_FGCOLOR + CI_WHITE);
                        break;
                case STYLE_SELECTED:
                        vt100_sgr(vt, SGR_RESET);
                        vt100_sgr(vt, SGR_BGCOLOR + CI_RED);
                        vt100_sgr(vt, SGR_FGCOLOR + CI_WHITE);
                        break;
                }
                break;
        case CHAR_ATTR_INDEX:
                vt100_sgr(vt, SGR_RESET);
                vt100_sgr(vt, SGR_BGCOLOR + color_map[attrs.val.index.bgcolor & 7]);
                vt100_sgr(vt, SGR_FGCOLOR + color_map[attrs.val.index.fgcolor & 7]);

                if (attrs.val.index.attr & CATTR_BRIGHT)
                        vt100_sgr(vt, SGR_BOLD);

                break;
        case CHAR_ATTR_RGB:
                if (vt->enable_rgb == true) {
                        vt100_sgr5(vt, 48, 2, RED(attrs.val.rgb.bgcolor),
                            GREEN(attrs.val.rgb.bgcolor),
                            BLUE(attrs.val.rgb.bgcolor));
                        vt100_sgr5(vt, 38, 2, RED(attrs.val.rgb.fgcolor),
                            GREEN(attrs.val.rgb.fgcolor),
                            BLUE(attrs.val.rgb.fgcolor));
                } else {
                        vt100_sgr(vt, SGR_RESET);
                        color =
                            ((RED(attrs.val.rgb.fgcolor) >= 0x80) ? COLOR_RED : 0) |
                            ((GREEN(attrs.val.rgb.fgcolor) >= 0x80) ? COLOR_GREEN : 0) |
                            ((BLUE(attrs.val.rgb.fgcolor) >= 0x80) ? COLOR_BLUE : 0);
                        vt100_sgr(vt, SGR_FGCOLOR + color_map[color]);
                        color =
                            ((RED(attrs.val.rgb.bgcolor) >= 0x80) ? COLOR_RED : 0) |
                            ((GREEN(attrs.val.rgb.bgcolor) >= 0x80) ? COLOR_GREEN : 0) |
                            ((BLUE(attrs.val.rgb.bgcolor) >= 0x80) ? COLOR_BLUE : 0);
                        vt100_sgr(vt, SGR_BGCOLOR + color_map[color]);
                }
                break;
        }
}

/** Create VT instance.
 *
 * @param arg Argument passed to callback functions
 * @param cols Number of columns
 * @param rows Number of rows
 * @param cb Callback functions
 *
 * @return Pointer to new VT instance on success, NULL on failure.
 */
vt100_t *vt100_create(void *arg, sysarg_t cols, sysarg_t rows, vt100_cb_t *cb)
{
        vt100_t *vt = malloc(sizeof(vt100_t));
        if (vt == NULL)
                return NULL;

        vt->cb = cb;
        vt->arg = arg;

        vt->cols = cols;
        vt->rows = rows;

        vt->cur_col = (sysarg_t) -1;
        vt->cur_row = (sysarg_t) -1;

        vt->cur_attrs.type = CHAR_ATTR_STYLE;
        vt->cur_attrs.val.style = STYLE_NORMAL;

        return vt;
}

/** Destroy VT instance.
 *
 * @param vt VT instance
 */
void vt100_destroy(vt100_t *vt)
{
        free(vt);
}

/** Get VT size.
 *
 * @param vt VT instance
 * @param cols Place to store number of columns
 * @param rows Place to store number of rows
 */
void vt100_get_dimensions(vt100_t *vt, sysarg_t *cols,
    sysarg_t *rows)
{
        *cols = vt->cols;
        *rows = vt->rows;
}

/** Temporarily yield VT to other users.
 *
 * @param vt VT instance
 * @return EOK on success or an error code
 */
errno_t vt100_yield(vt100_t *vt)
{
        return EOK;
}

/** Reclaim VT.
 *
 * @param vt VT instance
 * @return EOK on success or an error code
 */
errno_t vt100_claim(vt100_t *vt)
{
        return EOK;
}

/** Go to specified position, if needed.
 *
 * @param vt VT instance
 * @param col Column (starting from 0)
 * @param row Row (starting from 0)
 */
void vt100_goto(vt100_t *vt, sysarg_t col, sysarg_t row)
{
        if ((col >= vt->cols) || (row >= vt->rows))
                return;

        if ((col != vt->cur_col) || (row != vt->cur_row)) {
                vt100_set_pos(vt, col, row);
                vt->cur_col = col;
                vt->cur_row = row;
        }
}

/** Set character attributes, if needed.
 *
 * @param vt VT instance
 * @param attrs Attributes
 */
void vt100_set_attr(vt100_t *vt, char_attrs_t attrs)
{
        if (!attrs_same(vt->cur_attrs, attrs)) {
                vt100_set_sgr(vt, attrs);
                vt->cur_attrs = attrs;
        }
}

/** Set cursor visibility.
 *
 * @param vt VT instance
 * @param @c true to make cursor visible, @c false to make it invisible
 */
void vt100_cursor_visibility(vt100_t *vt, bool visible)
{
        if (visible)
                vt->cb->control_puts(vt->arg, "\033[?25h");
        else
                vt->cb->control_puts(vt->arg, "\033[?25l");
}

/** Print Unicode character.
 *
 * @param vt VT instance
 * @parma ch Unicode character
 */
void vt100_putuchar(vt100_t *vt, char32_t ch)
{
        vt->cb->putuchar(vt->arg, ch == 0 ? ' ' : ch);
        vt->cur_col++;

        if (vt->cur_col >= vt->cols) {
                vt->cur_row += vt->cur_col / vt->cols;
                vt->cur_col %= vt->cols;
        }
}

/** Flush VT.
 *
 * @param vt VT instance
 */
void vt100_flush(vt100_t *vt)
{
        vt->cb->flush(vt->arg);
}

/** Recognize a key.
 *
 * Generate a key callback and reset decoder state.
 *
 * @param vt VT instance
 * @param mods Key modifiers
 * @param key Key code
 * @param c Character
 */
static void vt100_key(vt100_t *vt, keymod_t mods, keycode_t key, char c)
{
        vt->cb->key(vt->arg, mods, key, c);
        vt->state = vts_base;
}

/** Process input character with prefix 1b.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b(vt100_t *vt, char c)
{
        switch (c) {
        case 0x1b:
                vt100_key(vt, 0, KC_ESCAPE, c);
                break;
        case 0x60:
                vt100_key(vt, KM_ALT, KC_BACKTICK, 0);
                break;

        case 0x31:
                vt100_key(vt, KM_ALT, KC_1, 0);
                break;
        case 0x32:
                vt100_key(vt, KM_ALT, KC_2, 0);
                break;
        case 0x33:
                vt100_key(vt, KM_ALT, KC_3, 0);
                break;
        case 0x34:
                vt100_key(vt, KM_ALT, KC_4, 0);
                break;
        case 0x35:
                vt100_key(vt, KM_ALT, KC_5, 0);
                break;
        case 0x36:
                vt100_key(vt, KM_ALT, KC_6, 0);
                break;
        case 0x37:
                vt100_key(vt, KM_ALT, KC_7, 0);
                break;
        case 0x38:
                vt100_key(vt, KM_ALT, KC_8, 0);
                break;
        case 0x39:
                vt100_key(vt, KM_ALT, KC_9, 0);
                break;
        case 0x30:
                vt100_key(vt, KM_ALT, KC_0, 0);
                break;

        case 0x2d:
                vt100_key(vt, KM_ALT, KC_MINUS, 0);
                break;
        case 0x3d:
                vt100_key(vt, KM_ALT, KC_EQUALS, 0);
                break;

        case 0x71:
                vt100_key(vt, KM_ALT, KC_Q, 0);
                break;
        case 0x77:
                vt100_key(vt, KM_ALT, KC_W, 0);
                break;
        case 0x65:
                vt100_key(vt, KM_ALT, KC_E, 0);
                break;
        case 0x72:
                vt100_key(vt, KM_ALT, KC_R, 0);
                break;
        case 0x74:
                vt100_key(vt, KM_ALT, KC_T, 0);
                break;
        case 0x79:
                vt100_key(vt, KM_ALT, KC_Y, 0);
                break;
        case 0x75:
                vt100_key(vt, KM_ALT, KC_U, 0);
                break;
        case 0x69:
                vt100_key(vt, KM_ALT, KC_I, 0);
                break;
        case 0x6f:
                vt100_key(vt, KM_ALT, KC_O, 0);
                break;
        case 0x70:
                vt100_key(vt, KM_ALT, KC_P, 0);
                break;

                /* 0x1b, 0x5b is used by other keys/sequences */

        case 0x5d:
                vt100_key(vt, KM_ALT, KC_RBRACKET, 0);
                break;

        case 0x61:
                vt100_key(vt, KM_ALT, KC_A, 0);
                break;
        case 0x73:
                vt100_key(vt, KM_ALT, KC_S, 0);
                break;
        case 0x64:
                vt100_key(vt, KM_ALT, KC_D, 0);
                break;
        case 0x66:
                vt100_key(vt, KM_ALT, KC_F, 0);
                break;
        case 0x67:
                vt100_key(vt, KM_ALT, KC_G, 0);
                break;
        case 0x68:
                vt100_key(vt, KM_ALT, KC_H, 0);
                break;
        case 0x6a:
                vt100_key(vt, KM_ALT, KC_J, 0);
                break;
        case 0x6b:
                vt100_key(vt, KM_ALT, KC_K, 0);
                break;
        case 0x6c:
                vt100_key(vt, KM_ALT, KC_L, 0);
                break;

        case 0x3b:
                vt100_key(vt, KM_ALT, KC_SEMICOLON, 0);
                break;
        case 0x27:
                vt100_key(vt, KM_ALT, KC_QUOTE, 0);
                break;
        case 0x5c:
                vt100_key(vt, KM_ALT, KC_BACKSLASH, 0);
                break;

        case 0x7a:
                vt100_key(vt, KM_ALT, KC_Z, 0);
                break;
        case 0x78:
                vt100_key(vt, KM_ALT, KC_X, 0);
                break;
        case 0x63:
                vt100_key(vt, KM_ALT, KC_C, 0);
                break;
        case 0x76:
                vt100_key(vt, KM_ALT, KC_V, 0);
                break;
        case 0x62:
                vt100_key(vt, KM_ALT, KC_B, 0);
                break;
        case 0x6e:
                vt100_key(vt, KM_ALT, KC_N, 0);
                break;
        case 0x6d:
                vt100_key(vt, KM_ALT, KC_M, 0);
                break;

        case 0x2c:
                vt100_key(vt, KM_ALT, KC_COMMA, 0);
                break;
        case 0x2e:
                vt100_key(vt, KM_ALT, KC_PERIOD, 0);
                break;
        case 0x2f:
                vt100_key(vt, KM_ALT, KC_SLASH, 0);
                break;

        case 0x4f:
                vt->state = vts_1b4f;
                break;
        case 0x5b:
                vt->state = vts_1b5b;
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 4f.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b4f(vt100_t *vt, char c)
{
        switch (c) {
        case 0x50:
                vt100_key(vt, 0, KC_F1, 0);
                break;
        case 0x51:
                vt100_key(vt, 0, KC_F2, 0);
                break;
        case 0x52:
                vt100_key(vt, 0, KC_F3, 0);
                break;
        case 0x53:
                vt100_key(vt, 0, KC_F4, 0);
                break;
        case 0x48:
                vt100_key(vt, 0, KC_HOME, 0);
                break;
        case 0x46:
                vt100_key(vt, 0, KC_END, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b(vt100_t *vt, char c)
{
        switch (c) {
        case 0x31:
                vt->state = vts_1b5b31;
                break;
        case 0x32:
                vt->state = vts_1b5b32;
                break;
        case 0x35:
                vt->state = vts_1b5b35;
                break;
        case 0x33:
                vt->state = vts_1b5b33;
                break;
        case 0x36:
                vt->state = vts_1b5b36;
                break;
        case 0x41:
                vt100_key(vt, 0, KC_UP, 0);
                break;
        case 0x44:
                vt100_key(vt, 0, KC_LEFT, 0);
                break;
        case 0x42:
                vt100_key(vt, 0, KC_DOWN, 0);
                break;
        case 0x43:
                vt100_key(vt, 0, KC_RIGHT, 0);
                break;
        case 0x48:
                vt100_key(vt, 0, KC_HOME, 0);
                break;
        case 0x46:
                vt100_key(vt, 0, KC_END, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b31(vt100_t *vt, char c)
{
        switch (c) {
        case 0x35:
                vt->state = vts_1b5b3135;
                break;
        case 0x37:
                vt->state = vts_1b5b3137;
                break;
        case 0x38:
                vt->state = vts_1b5b3138;
                break;
        case 0x39:
                vt->state = vts_1b5b3139;
                break;
        case 0x3b:
                vt->state = vts_1b5b313b;
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 35.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3135(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F5, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 37.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3137(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F6, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 38.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3138(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F7, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 39.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3139(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F8, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 3b.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b313b(vt100_t *vt, char c)
{
        switch (c) {
        case 0x32:
                vt->state = vts_1b5b313b32;
                break;
        case 0x33:
                vt->state = vts_1b5b313b33;
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 3b 32.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b313b32(vt100_t *vt, char c)
{
        switch (c) {
        case 0x41:
                vt100_key(vt, KM_SHIFT, KC_UP, 0);
                break;
        case 0x44:
                vt100_key(vt, KM_SHIFT, KC_LEFT, 0);
                break;
        case 0x42:
                vt100_key(vt, KM_SHIFT, KC_DOWN, 0);
                break;
        case 0x43:
                vt100_key(vt, KM_SHIFT, KC_RIGHT, 0);
                break;
        case 0x48:
                vt100_key(vt, KM_SHIFT, KC_HOME, 0);
                break;
        case 0x46:
                vt100_key(vt, KM_SHIFT, KC_END, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 31 3b 33.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b313b33(vt100_t *vt, char c)
{
        switch (c) {
        case 0x41:
                vt100_key(vt, KM_ALT, KC_UP, 0);
                break;
        case 0x44:
                vt100_key(vt, KM_ALT, KC_LEFT, 0);
                break;
        case 0x42:
                vt100_key(vt, KM_ALT, KC_DOWN, 0);
                break;
        case 0x43:
                vt100_key(vt, KM_ALT, KC_RIGHT, 0);
                break;
        case 0x48:
                vt100_key(vt, KM_ALT, KC_HOME, 0);
                break;
        case 0x46:
                vt100_key(vt, KM_ALT, KC_END, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b32(vt100_t *vt, char c)
{
        switch (c) {
        case 0x30:
                vt->state = vts_1b5b3230;
                break;
        case 0x31:
                vt->state = vts_1b5b3231;
                break;
        case 0x33:
                vt->state = vts_1b5b3233;
                break;
        case 0x34:
                vt->state = vts_1b5b3234;
                break;
        case 0x35:
                vt->state = vts_1b5b3235;
                break;
        case 0x38:
                vt->state = vts_1b5b3238;
                break;
        case 0x7e:
                vt100_key(vt, 0, KC_INSERT, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 30.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3230(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F9, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 31.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3231(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F10, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 33.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3233(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F11, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 34.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3234(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_F12, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 35.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3235(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_PRTSCR, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 32 38.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b3238(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_PAUSE, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 35.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b35(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_PAGE_UP, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 33.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b33(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_DELETE, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character with prefix 1b 5b 36.
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_1b5b36(vt100_t *vt, char c)
{
        switch (c) {
        case 0x7e:
                vt100_key(vt, 0, KC_PAGE_DOWN, 0);
                break;
        default:
                vt->state = vts_base;
                break;
        }
}

/** Process input character (base state, no prefix).
 *
 * @param vt VT instance
 * @param c Input character
 */
static void vt100_rcvd_base(vt100_t *vt, char c)
{
        switch (c) {
                /*
                 * Not shifted
                 */
        case 0x60:
                vt100_key(vt, 0, KC_BACKTICK, c);
                break;

        case 0x31:
                vt100_key(vt, 0, KC_1, c);
                break;
        case 0x32:
                vt100_key(vt, 0, KC_2, c);
                break;
        case 0x33:
                vt100_key(vt, 0, KC_3, c);
                break;
        case 0x34:
                vt100_key(vt, 0, KC_4, c);
                break;
        case 0x35:
                vt100_key(vt, 0, KC_5, c);
                break;
        case 0x36:
                vt100_key(vt, 0, KC_6, c);
                break;
        case 0x37:
                vt100_key(vt, 0, KC_7, c);
                break;
        case 0x38:
                vt100_key(vt, 0, KC_8, c);
                break;
        case 0x39:
                vt100_key(vt, 0, KC_9, c);
                break;
        case 0x30:
                vt100_key(vt, 0, KC_0, c);
                break;
        case 0x2d:
                vt100_key(vt, 0, KC_MINUS, c);
                break;
        case 0x3d:
                vt100_key(vt, 0, KC_EQUALS, c);
                break;

        case 0x08:
                vt100_key(vt, 0, KC_BACKSPACE, c);
                break;

        case 0x09:
                vt100_key(vt, 0, KC_TAB, c);
                break;

        case 0x71:
                vt100_key(vt, 0, KC_Q, c);
                break;
        case 0x77:
                vt100_key(vt, 0, KC_W, c);
                break;
        case 0x65:
                vt100_key(vt, 0, KC_E, c);
                break;
        case 0x72:
                vt100_key(vt, 0, KC_R, c);
                break;
        case 0x74:
                vt100_key(vt, 0, KC_T, c);
                break;
        case 0x79:
                vt100_key(vt, 0, KC_Y, c);
                break;
        case 0x75:
                vt100_key(vt, 0, KC_U, c);
                break;
        case 0x69:
                vt100_key(vt, 0, KC_I, c);
                break;
        case 0x6f:
                vt100_key(vt, 0, KC_O, c);
                break;
        case 0x70:
                vt100_key(vt, 0, KC_P, c);
                break;

        case 0x5b:
                vt100_key(vt, 0, KC_LBRACKET, c);
                break;
        case 0x5d:
                vt100_key(vt, 0, KC_RBRACKET, c);
                break;

        case 0x61:
                vt100_key(vt, 0, KC_A, c);
                break;
        case 0x73:
                vt100_key(vt, 0, KC_S, c);
                break;
        case 0x64:
                vt100_key(vt, 0, KC_D, c);
                break;
        case 0x66:
                vt100_key(vt, 0, KC_F, c);
                break;
        case 0x67:
                vt100_key(vt, 0, KC_G, c);
                break;
        case 0x68:
                vt100_key(vt, 0, KC_H, c);
                break;
        case 0x6a:
                vt100_key(vt, 0, KC_J, c);
                break;
        case 0x6b:
                vt100_key(vt, 0, KC_K, c);
                break;
        case 0x6c:
                vt100_key(vt, 0, KC_L, c);
                break;

        case 0x3b:
                vt100_key(vt, 0, KC_SEMICOLON, c);
                break;
        case 0x27:
                vt100_key(vt, 0, KC_QUOTE, c);
                break;
        case 0x5c:
                vt100_key(vt, 0, KC_BACKSLASH, c);
                break;

        case 0x7a:
                vt100_key(vt, 0, KC_Z, c);
                break;
        case 0x78:
                vt100_key(vt, 0, KC_X, c);
                break;
        case 0x63:
                vt100_key(vt, 0, KC_C, c);
                break;
        case 0x76:
                vt100_key(vt, 0, KC_V, c);
                break;
        case 0x62:
                vt100_key(vt, 0, KC_B, c);
                break;
        case 0x6e:
                vt100_key(vt, 0, KC_N, c);
                break;
        case 0x6d:
                vt100_key(vt, 0, KC_M, c);
                break;

        case 0x2c:
                vt100_key(vt, 0, KC_COMMA, c);
                break;
        case 0x2e:
                vt100_key(vt, 0, KC_PERIOD, c);
                break;
        case 0x2f:
                vt100_key(vt, 0, KC_SLASH, c);
                break;

                /*
                 * Shifted
                 */
        case 0x7e:
                vt100_key(vt, KM_SHIFT, KC_BACKTICK, c);
                break;

        case 0x21:
                vt100_key(vt, KM_SHIFT, KC_1, c);
                break;
        case 0x40:
                vt100_key(vt, KM_SHIFT, KC_2, c);
                break;
        case 0x23:
                vt100_key(vt, KM_SHIFT, KC_3, c);
                break;
        case 0x24:
                vt100_key(vt, KM_SHIFT, KC_4, c);
                break;
        case 0x25:
                vt100_key(vt, KM_SHIFT, KC_5, c);
                break;
        case 0x5e:
                vt100_key(vt, KM_SHIFT, KC_6, c);
                break;
        case 0x26:
                vt100_key(vt, KM_SHIFT, KC_7, c);
                break;
        case 0x2a:
                vt100_key(vt, KM_SHIFT, KC_8, c);
                break;
        case 0x28:
                vt100_key(vt, KM_SHIFT, KC_9, c);
                break;
        case 0x29:
                vt100_key(vt, KM_SHIFT, KC_0, c);
                break;
        case 0x5f:
                vt100_key(vt, KM_SHIFT, KC_MINUS, c);
                break;
        case 0x2b:
                vt100_key(vt, KM_SHIFT, KC_EQUALS, c);
                break;

        case 0x51:
                vt100_key(vt, KM_SHIFT, KC_Q, c);
                break;
        case 0x57:
                vt100_key(vt, KM_SHIFT, KC_W, c);
                break;
        case 0x45:
                vt100_key(vt, KM_SHIFT, KC_E, c);
                break;
        case 0x52:
                vt100_key(vt, KM_SHIFT, KC_R, c);
                break;
        case 0x54:
                vt100_key(vt, KM_SHIFT, KC_T, c);
                break;
        case 0x59:
                vt100_key(vt, KM_SHIFT, KC_Y, c);
                break;
        case 0x55:
                vt100_key(vt, KM_SHIFT, KC_U, c);
                break;
        case 0x49:
                vt100_key(vt, KM_SHIFT, KC_I, c);
                break;
        case 0x4f:
                vt100_key(vt, KM_SHIFT, KC_O, c);
                break;
        case 0x50:
                vt100_key(vt, KM_SHIFT, KC_P, c);
                break;

        case 0x7b:
                vt100_key(vt, KM_SHIFT, KC_LBRACKET, c);
                break;
        case 0x7d:
                vt100_key(vt, KM_SHIFT, KC_RBRACKET, c);
                break;

        case 0x41:
                vt100_key(vt, KM_SHIFT, KC_A, c);
                break;
        case 0x53:
                vt100_key(vt, KM_SHIFT, KC_S, c);
                break;
        case 0x44:
                vt100_key(vt, KM_SHIFT, KC_D, c);
                break;
        case 0x46:
                vt100_key(vt, KM_SHIFT, KC_F, c);
                break;
        case 0x47:
                vt100_key(vt, KM_SHIFT, KC_G, c);
                break;
        case 0x48:
                vt100_key(vt, KM_SHIFT, KC_H, c);
                break;
        case 0x4a:
                vt100_key(vt, KM_SHIFT, KC_J, c);
                break;
        case 0x4b:
                vt100_key(vt, KM_SHIFT, KC_K, c);
                break;
        case 0x4c:
                vt100_key(vt, KM_SHIFT, KC_L, c);
                break;

        case 0x3a:
                vt100_key(vt, KM_SHIFT, KC_SEMICOLON, c);
                break;
        case 0x22:
                vt100_key(vt, KM_SHIFT, KC_QUOTE, c);
                break;
        case 0x7c:
                vt100_key(vt, KM_SHIFT, KC_BACKSLASH, c);
                break;

        case 0x5a:
                vt100_key(vt, KM_SHIFT, KC_Z, c);
                break;
        case 0x58:
                vt100_key(vt, KM_SHIFT, KC_X, c);
                break;
        case 0x43:
                vt100_key(vt, KM_SHIFT, KC_C, c);
                break;
        case 0x56:
                vt100_key(vt, KM_SHIFT, KC_V, c);
                break;
        case 0x42:
                vt100_key(vt, KM_SHIFT, KC_B, c);
                break;
        case 0x4e:
                vt100_key(vt, KM_SHIFT, KC_N, c);
                break;
        case 0x4d:
                vt100_key(vt, KM_SHIFT, KC_M, c);
                break;

        case 0x3c:
                vt100_key(vt, KM_SHIFT, KC_COMMA, c);
                break;
        case 0x3e:
                vt100_key(vt, KM_SHIFT, KC_PERIOD, c);
                break;
        case 0x3f:
                vt100_key(vt, KM_SHIFT, KC_SLASH, c);
                break;

                /*
                 * ...
                 */
        case 0x20:
                vt100_key(vt, 0, KC_SPACE, c);
                break;
        case 0x0a:
                vt100_key(vt, 0, KC_ENTER, '\n');
                break;
        case 0x0d:
                vt100_key(vt, 0, KC_ENTER, '\n');
                break;

                /*
                 * Ctrl + key
                 */
        case 0x11:
                vt100_key(vt, KM_CTRL, KC_Q, c);
                break;
        case 0x17:
                vt100_key(vt, KM_CTRL, KC_W, c);
                break;
        case 0x05:
                vt100_key(vt, KM_CTRL, KC_E, c);
                break;
        case 0x12:
                vt100_key(vt, KM_CTRL, KC_R, c);
                break;
        case 0x14:
                vt100_key(vt, KM_CTRL, KC_T, c);
                break;
        case 0x19:
                vt100_key(vt, KM_CTRL, KC_Y, c);
                break;
        case 0x15:
                vt100_key(vt, KM_CTRL, KC_U, c);
                break;
        case 0x0f:
                vt100_key(vt, KM_CTRL, KC_O, c);
                break;
        case 0x10:
                vt100_key(vt, KM_CTRL, KC_P, c);
                break;

        case 0x01:
                vt100_key(vt, KM_CTRL, KC_A, c);
                break;
        case 0x13:
                vt100_key(vt, KM_CTRL, KC_S, c);
                break;
        case 0x04:
                vt100_key(vt, KM_CTRL, KC_D, c);
                break;
        case 0x06:
                vt100_key(vt, KM_CTRL, KC_F, c);
                break;
        case 0x07:
                vt100_key(vt, KM_CTRL, KC_G, c);
                break;
        case 0x0b:
                vt100_key(vt, KM_CTRL, KC_K, c);
                break;
        case 0x0c:
                vt100_key(vt, KM_CTRL, KC_L, c);
                break;

        case 0x1a:
                vt100_key(vt, KM_CTRL, KC_Z, c);
                break;
        case 0x18:
                vt100_key(vt, KM_CTRL, KC_X, c);
                break;
        case 0x03:
                vt100_key(vt, KM_CTRL, KC_C, c);
                break;
        case 0x16:
                vt100_key(vt, KM_CTRL, KC_V, c);
                break;
        case 0x02:
                vt100_key(vt, KM_CTRL, KC_B, c);
                break;
        case 0x0e:
                vt100_key(vt, KM_CTRL, KC_N, c);
                break;

        case 0x7f:
                vt100_key(vt, 0, KC_BACKSPACE, '\b');
                break;

        case 0x1b:
                vt->state = vts_1b;
                break;
        }
}

void vt100_rcvd_char(vt100_t *vt, char c)
{
        switch (vt->state) {
        case vts_base:
                vt100_rcvd_base(vt, c);
                break;
        case vts_1b:
                vt100_rcvd_1b(vt, c);
                break;
        case vts_1b4f:
                vt100_rcvd_1b4f(vt, c);
                break;
        case vts_1b5b:
                vt100_rcvd_1b5b(vt, c);
                break;
        case vts_1b5b31:
                vt100_rcvd_1b5b31(vt, c);
                break;
        case vts_1b5b3135:
                vt100_rcvd_1b5b3135(vt, c);
                break;
        case vts_1b5b3137:
                vt100_rcvd_1b5b3137(vt, c);
                break;
        case vts_1b5b3138:
                vt100_rcvd_1b5b3138(vt, c);
                break;
        case vts_1b5b3139:
                vt100_rcvd_1b5b3139(vt, c);
                break;
        case vts_1b5b313b:
                vt100_rcvd_1b5b313b(vt, c);
                break;
        case vts_1b5b313b32:
                vt100_rcvd_1b5b313b32(vt, c);
                break;
        case vts_1b5b313b33:
                vt100_rcvd_1b5b313b33(vt, c);
                break;
        case vts_1b5b32:
                vt100_rcvd_1b5b32(vt, c);
                break;
        case vts_1b5b3230:
                vt100_rcvd_1b5b3230(vt, c);
                break;
        case vts_1b5b3231:
                vt100_rcvd_1b5b3231(vt, c);
                break;
        case vts_1b5b3233:
                vt100_rcvd_1b5b3233(vt, c);
                break;
        case vts_1b5b3234:
                vt100_rcvd_1b5b3234(vt, c);
                break;
        case vts_1b5b3235:
                vt100_rcvd_1b5b3235(vt, c);
                break;
        case vts_1b5b3238:
                vt100_rcvd_1b5b3238(vt, c);
                break;
        case vts_1b5b35:
                vt100_rcvd_1b5b35(vt, c);
                break;
        case vts_1b5b33:
                vt100_rcvd_1b5b33(vt, c);
                break;
        case vts_1b5b36:
                vt100_rcvd_1b5b36(vt, c);
                break;
        }
}

/** @}
 */
/* [<][>][^][v][top][bottom][index][help] */
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HelenOS sources

root/uspace/lib/vt/src/vt100.c

DEFINITIONS
