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Diffstat (limited to 'nuttx/libc/misc/lib_kbddecode.c')
-rw-r--r--nuttx/libc/misc/lib_kbddecode.c267
1 files changed, 0 insertions, 267 deletions
diff --git a/nuttx/libc/misc/lib_kbddecode.c b/nuttx/libc/misc/lib_kbddecode.c
deleted file mode 100644
index 62554902c..000000000
--- a/nuttx/libc/misc/lib_kbddecode.c
+++ /dev/null
@@ -1,267 +0,0 @@
-/****************************************************************************
- * libc/msic/lib_kbddecode.c
- * Decoding side of the Keyboard CODEC
- *
- * Copyright (C) 2012 Gregory Nutt. All rights reserved.
- * Authors: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "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
- * COPYRIGHT OWNER OR CONTRIBUTORS 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.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <stdint.h>
-#include <assert.h>
-#include <debug.h>
-
-#include <nuttx/streams.h>
-#include <nuttx/ascii.h>
-#include <nuttx/input/kbd_codec.h>
-
-/****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
-
-#define NDX_ESC 0
-#define NDX_BRACKET 1
-#define NDX_CODE 2
-#define NDX_TERMINATOR 3
-
-#define NCH_ESC 1
-#define NCH_BRACKET 2
-#define NCH_CODE 3
-#define NCH_TERMINATOR 4
-
-#define TERM_MIN ('a' + KBD_RELEASE)
-#define TERM_MAX ('a' + KBD_SPECREL)
-#define TERM_RETURN(a) ((a) - 'a')
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: kbd_reget
- *
- * Description:
- * We have unused characters from the last, unsuccessful. Return one of
- * these instead of the .
- *
- * Input Parameters:
- * stream - An instance of lib_instream_s to do the low-level get
- * operation.
- * pch - The location character to save the returned value. This may be
- * either a normal, character code or a special command from enum
- * kbd_keycode_e
- *
- * Returned Value:
- * KBD_PRESS - Indicates the successful receipt of norma keyboard data.
- *
- ****************************************************************************/
-
-static int kbd_reget(FAR struct kbd_getstate_s *state, FAR uint8_t *pch)
-{
- /* Return the next character */
-
- *pch = state->buf[state->ndx];
- state->ndx++;
- state->nch--;
- return KBD_PRESS;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: kbd_decode
- *
- * Description:
- * Get one byte of data or special command from the driver provided input
- * buffer.
- *
- * Input Parameters:
- * stream - An instance of lib_instream_s to do the low-level get
- * operation.
- * pch - The location to save the returned value. This may be
- * either a normal, character code or a special command from enum
- * kbd_keycode_e
- * state - A user provided buffer to support parsing. This structure
- * should be cleared the first time that kbd_decode is called.
- *
- * Returned Value:
- *
- * KBD_PRESS - Indicates the successful receipt of normal, keyboard data.
- * This corresponds to a keypress event. The returned value in pch is a
- * simple byte of text or control data corresponding to the pressed key.
- * KBD_RELEASE - Indicates a key release event. The returned value in pch
- * is the byte of text or control data corresponding to the released key.
- * KBD_SPECPRESS - Indicates the successful receipt of a special keyboard
- * command. The returned value in pch is a value from enum kbd_getstate_s.
- * KBD_SPECREL - Indicates a special key release event. The returned value
- * in pch is a value from enum kbd_getstate_s.
- * EOF - An error has getting the next character (reported by the stream).
- * Normally indicates the end of file.
- *
- ****************************************************************************/
-
-int kbd_decode(FAR struct lib_instream_s *stream,
- FAR struct kbd_getstate_s *state, FAR uint8_t *pch)
-{
- int ch;
-
- DEBUGASSERT(stream && state && pch);
-
- /* Are their ungotten characters from the last, failed parse? */
-
- if (state->nch > 0)
- {
- /* Yes, return the next ungotten character */
-
- return kbd_reget(state, pch);
- }
-
- state->ndx = 0;
-
- /* No, ungotten characters. Check for the beginning of an ESC sequence. */
-
- ch = stream->get(stream);
- if (ch == EOF)
- {
- /* End of file/stream */
-
- return KBD_ERROR;
- }
- else
- {
- state->buf[NDX_ESC] = (uint8_t)ch;
- state->nch = NCH_ESC;
-
- if (ch != ASCII_ESC)
- {
- /* Not the beginning of an escape sequence. Return the character. */
-
- return kbd_reget(state, pch);
- }
- }
-
- /* Check for ESC-[ */
-
- ch = stream->get(stream);
- if (ch == EOF)
- {
- /* End of file/stream. Return the escape character now. We will
- * return the EOF indication next time.
- */
-
- return kbd_reget(state, pch);
- }
- else
- {
- state->buf[NDX_BRACKET] = ch;
- state->nch = NCH_BRACKET;
-
- if (ch != '[')
- {
- /* Not the beginning of an escape sequence. Return the ESC now,
- * return the following character later.
- */
-
- return kbd_reget(state, pch);
- }
- }
-
- /* Get and verify the special keyboard data to decode */
-
- ch = stream->get(stream);
- if (ch == EOF)
- {
- /* End of file/stream. Unget everything and return the ESC character.
- */
-
- return kbd_reget(state, pch);
- }
- else
- {
- state->buf[NDX_CODE] = (uint8_t)ch;
- state->nch = NCH_CODE;
-
- /* Check for a valid special command code */
-
- if (ch < FIRST_KEYCODE || ch > LAST_KEYCODE)
- {
- /* Not a special command code, return the ESC now and the next two
- * characters later.
- */
-
- return kbd_reget(state, pch);
- }
- }
-
- /* Check for the final semicolon */
-
- ch = stream->get(stream);
- if (ch == EOF)
- {
- /* End of file/stream. Unget everything and return the ESC character.
- */
-
- return kbd_reget(state, pch);
- }
- else
- {
- state->buf[NDX_TERMINATOR] = (uint8_t)ch;
- state->nch = NCH_TERMINATOR;
-
- /* Check for a valid special command code */
-
- if (ch < TERM_MIN || ch > TERM_MAX)
- {
- /* Not a special command code, return the ESC now and the next two
- * characters later.
- */
-
- return kbd_reget(state, pch);
- }
- }
-
- /* We have successfully parsed the the entire escape sequence. Return the
- * keyboard value in pch and the value an indication determined by the
- * terminating character.
- */
-
- *pch = state->buf[NDX_CODE];
- state->nch = 0;
- return TERM_RETURN(state->buf[NDX_TERMINATOR]);
-}
-
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