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Diffstat (limited to 'nuttx/libc/stdio/lib_puts.c')
-rw-r--r-- | nuttx/libc/stdio/lib_puts.c | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/nuttx/libc/stdio/lib_puts.c b/nuttx/libc/stdio/lib_puts.c new file mode 100644 index 000000000..53eda7081 --- /dev/null +++ b/nuttx/libc/stdio/lib_puts.c @@ -0,0 +1,130 @@ +/**************************************************************************** + * libc/stdio/lib_puts.c + * + * Copyright (C) 2007, 2008, 2011-2012 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Compilation Switches + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <stdio.h> +#include "lib_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Public Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: puts + * + * Description: + * puts() writes the string s and a trailing newline to stdout. + * + ****************************************************************************/ + +int puts(FAR const char *s) +{ + FILE *stream = stdout; + int nwritten; + int nput = EOF; + int ret; + + /* Write the string (the next two steps must be atomic) */ + + lib_take_semaphore(stream); + + /* Write the string without its trailing '\0' */ + + nwritten = fputs(s, stream); + if (nwritten > 0) + { + /* Followed by a newline */ + + char newline = '\n'; + ret = lib_fwrite(&newline, 1, stream); + if (ret > 0) + { + nput = nwritten + 1; + + /* Flush the buffer after the newline is output. */ + +#ifdef CONFIG_STDIO_LINEBUFFER + ret = lib_fflush(stream, true); + if (ret < 0) + { + nput = EOF; + } +#endif + } + } + + lib_give_semaphore(stdout); + return nput; +} + |