135 lines
4.3 KiB
C
135 lines
4.3 KiB
C
/****************************************************************************
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* apps/nshlib/nsh_printf.c
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*
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* Copyright (C) 2016 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <ctype.h>
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#include <libgen.h>
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#include <errno.h>
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#include "nsh.h"
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#include "nsh_console.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: cmd_printf
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****************************************************************************/
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#ifndef CONFIG_NSH_DISABLE_PRINTF
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int cmd_printf(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
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{
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FAR char *fmt;
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char ch;
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uint32_t value;
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int len;
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int i;
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/* parse each argument, detecting the right action to take
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* case it doesn't starts with a format then just print it
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*/
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for (i = 1; i < argc; i++)
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{
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fmt = argv[i];
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/* Is it really a FORMAT ? */
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if (fmt[0] == '\\')
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{
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fmt++;
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ch = fmt[0];
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switch (ch)
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{
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case 'x':
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fmt++;
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value = strtoul(fmt, NULL, 16);
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len = strnlen(fmt, 10);
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if (len >= 7)
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{
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nsh_output(vtbl, "%c%c%c%c", value & 0xff,
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(value & 0xff00) >> 8,
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(value & 0xff0000) >> 16,
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(value & 0xff000000) >> 24);
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}
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else if (len >= 3)
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{
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nsh_output(vtbl, "%c%c", value & 0xff,
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(value & 0xff00) >> 8);
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}
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else if (len >= 1)
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{
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nsh_output(vtbl, "%c", value & 0xff);
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}
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break;
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case 'n':
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nsh_output(vtbl, "\n");
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break;
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case 'r':
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nsh_output(vtbl, "\r");
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break;
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case 't':
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nsh_output(vtbl, "\t");
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break;
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default:
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break;
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}
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}
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else
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{
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nsh_output(vtbl, "%s", argv[i]);
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}
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}
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return OK;
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}
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#endif
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