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-rw-r--r--nuttx/graphics/nxconsole/nxcon_vt100.c289
1 files changed, 0 insertions, 289 deletions
diff --git a/nuttx/graphics/nxconsole/nxcon_vt100.c b/nuttx/graphics/nxconsole/nxcon_vt100.c
deleted file mode 100644
index 3e3374dce..000000000
--- a/nuttx/graphics/nxconsole/nxcon_vt100.c
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-/****************************************************************************
- * nuttx/graphics/nxconsole/nxcon_vt100.c
- *
- * Copyright (C) 2012 Gregory Nutt. All rights reserved.
- * Author: 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 <string.h>
-#include <assert.h>
-
-#include <nuttx/vt100.h>
-
-#include "nxcon_internal.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Types
- ****************************************************************************/
-
-typedef int (*seqhandler_t)(FAR struct nxcon_state_s *priv);
-
-struct vt100_sequence_s
-{
- FAR const char *seq;
- seqhandler_t handler;
- uint8_t size;
-};
-
-/****************************************************************************
- * Private Function Prototypes
- ****************************************************************************/
-
-static int nxcon_erasetoeol(FAR struct nxcon_state_s *priv);
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/* All recognized VT100 escape sequences. Very little as present, this is
- * a placeholder for a future, more complete VT100 emulation.
- */
-
-/* <esc>[K is the VT100 command erases to the end of the line. */
-
-static const char g_erasetoeol[] = VT100_CLEAREOL;
-
-/* The list of all VT100 sequences supported by the emulation */
-
-static const struct vt100_sequence_s g_vt100sequences[] =
-{
- {g_erasetoeol, nxcon_erasetoeol, sizeof(g_erasetoeol)},
- {NULL, NULL, 0}
-};
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxcon_erasetoeol
- *
- * Description:
- * Handle the erase-to-eol VT100 escapte sequence
- *
- * Input Parameters:
- * priv - Driver data structure
- *
- * Returned Value:
- * The index of the match in g_vt100sequences[]
- *
- ****************************************************************************/
-
-static int nxcon_erasetoeol(FAR struct nxcon_state_s *priv)
-{
- /* Does nothing yet (other than consume the sequence) */
-
- return OK;
-}
-
-/****************************************************************************
- * Name: nxcon_vt100part
- *
- * Description:
- * Return the next entry that is a partial match to the sequence.
- *
- * Input Parameters:
- * priv - Driver data structure
- * seqsize - The number of bytes in the sequence
- * startndx - The index to start searching
- *
- * Returned Value:
- * A pointer to the matching sequence in g_vt100sequences[]
- *
- ****************************************************************************/
-
-FAR const struct vt100_sequence_s *
-nxcon_vt100part(FAR struct nxcon_state_s *priv, int seqsize)
-{
- FAR const struct vt100_sequence_s *seq;
- int ndx;
-
- /* Search from the beginning of the sequence table */
-
- for (ndx = 0; g_vt100sequences[ndx].seq; ndx++)
- {
- /* Is this sequence big enough? */
-
- seq = &g_vt100sequences[ndx];
- if (seq->size >= seqsize)
- {
- /* Yes... are the first 'seqsize' bytes the same */
-
- if (memcmp(seq->seq, priv->seq, seqsize) == 0)
- {
- /* Yes.. return the match */
-
- return seq;
- }
- }
- }
- return NULL;
-}
-
-/****************************************************************************
- * Name: nxcon_vt100seq
- *
- * Description:
- * Determine if the new sequence is a part of a supported VT100 escape
- * sequence.
- *
- * Input Parameters:
- * priv - Driver data structure
- * seqsize - The number of bytes in the sequence
- *
- * Returned Value:
- * state - See enum nxcon_vt100state_e;
- *
- ****************************************************************************/
-
-static enum nxcon_vt100state_e nxcon_vt100seq(FAR struct nxcon_state_s *priv,
- int seqsize)
-{
- FAR const struct vt100_sequence_s *seq;
- enum nxcon_vt100state_e ret;
-
- /* Is there any VT100 escape sequence that matches what we have
- * buffered so far?
- */
-
- seq = nxcon_vt100part(priv, seqsize);
- if (seq)
- {
- /* Yes.. if the size of that escape sequence is the same as what we
- * have buffered, then we have an exact match.
- */
-
- if (seq->size == seqsize)
- {
- /* Process the VT100 sequence */
-
- seq->handler(priv);
- priv->nseq = 0;
- return VT100_PROCESSED;
- }
-
- /* The 'seqsize' is still smaller than the potential match(es). We
- * will need to collect more characters before we can make a decision.
- * Retun an indication that we have consumed the character.
- */
-
- return VT100_CONSUMED;
- }
-
- /* We get here on a failure. The buffer sequence is not part of any
- * supported VT100 escape sequence. If seqsize > 1 then we need to
- * return a special value because we have to re-process the buffered
- * data.
- */
-
- ret = seqsize > 1 ? VT100_ABORT : VT100_NOT_CONSUMED;
- return ret;
-}
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: nxcon_vt100
- *
- * Description:
- * Test if the newly received byte is part of a VT100 escape sequence
- *
- * Input Parameters:
- * priv - Driver data structure
- * ch - The newly received character
- *
- * Returned Value:
- * state - See enum nxcon_vt100state_e;
- *
- ****************************************************************************/
-
-enum nxcon_vt100state_e nxcon_vt100(FAR struct nxcon_state_s *priv, char ch)
-{
- enum nxcon_vt100state_e ret;
- int seqsize;
-
- DEBUGASSERT(priv && priv->nseq < VT100_MAX_SEQUENCE);
-
- /* If we have no buffered characters, then 'ch' must be the first character
- * of an escape sequence.
- */
-
- if (priv->nseq < 1)
- {
- /* The first character of an escape sequence must be an an escape
- * character (duh).
- */
-
- if (ch != ASCII_ESC)
- {
- return VT100_NOT_CONSUMED;
- }
-
- /* Add the escape character to the buffer but don't bother with any
- * further checking.
- */
-
- priv->seq[0] = ASCII_ESC;
- priv->nseq = 1;
- return VT100_CONSUMED;
- }
-
- /* Temporarily add the next character to the buffer */
-
- seqsize = priv->nseq;
- priv->seq[seqsize] = ch;
-
- /* Then check if this sequence is part of an a valid escape sequence */
-
- seqsize++;
- ret = nxcon_vt100seq(priv, seqsize);
- if (ret == VT100_CONSUMED)
- {
- /* The newly added character is indeed part of a VT100 escape sequence
- * (which is still incomplete). Keep it in the buffer.
- */
-
- priv->nseq = seqsize;
- }
- return ret;
-}
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