diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-07-01 20:05:11 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-07-01 20:05:11 +0000 |
commit | 8f33007a375fa81d64faa99b44d94004a900cede (patch) | |
tree | 86e287d7273597508a3348846991d6dafcae45c5 /nuttx/examples/nsh/nsh_envcmds.c | |
parent | 555fff8ebff7d113376f6b5b8dbac1ff82cf0fb0 (diff) | |
download | px4-nuttx-8f33007a375fa81d64faa99b44d94004a900cede.tar.gz px4-nuttx-8f33007a375fa81d64faa99b44d94004a900cede.tar.bz2 px4-nuttx-8f33007a375fa81d64faa99b44d94004a900cede.zip |
add set and unset
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@306 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/examples/nsh/nsh_envcmds.c')
-rw-r--r-- | nuttx/examples/nsh/nsh_envcmds.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/nuttx/examples/nsh/nsh_envcmds.c b/nuttx/examples/nsh/nsh_envcmds.c new file mode 100644 index 000000000..c6ff9a0f2 --- /dev/null +++ b/nuttx/examples/nsh/nsh_envcmds.c @@ -0,0 +1,138 @@ +/**************************************************************************** + * nsh_envcmds.c + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * 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 Gregory Nutt 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 <sys/types.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> + +#include "nsh.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: cmd_echo + ****************************************************************************/ + +void cmd_echo(int argc, char **argv) +{ + int i; + + /* echo each argument, separated by a space as it must have been on the + * command line + */ + + for (i = 1; i < argc; i++) + { + /* Check for references to environment variables */ + +#ifndef CONFIG_DISABLE_ENVIRON + if (argv[i][0] == '$') + { + char *value = getenv(argv[i]+1); + if (value) + { + printf("%s ", value); + } + } + else +#endif + { + printf("%s ", argv[i]); + } + } + putchar('\n'); +} + +/**************************************************************************** + * Name: cmd_set + ****************************************************************************/ + +#ifndef CONFIG_DISABLE_ENVIRON +void cmd_set(int argc, char **argv) +{ + if (setenv(argv[1], argv[2], TRUE) < 0) + { + printf(g_fmtcmdfailed, argv[0], "setenv", strerror(errno)); + } +} +#endif + +/**************************************************************************** + * Name: cmd_unset + ****************************************************************************/ + +#ifndef CONFIG_DISABLE_ENVIRON +void cmd_unset(int argc, char **argv) +{ + if (unsetenv(argv[1]) < 0) + { + printf(g_fmtcmdfailed, argv[0], "unsetenv", strerror(errno)); + } +} +#endif |