diff options
Diffstat (limited to 'nuttx/libc/stdio/lib_fputs.c')
-rw-r--r-- | nuttx/libc/stdio/lib_fputs.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/nuttx/libc/stdio/lib_fputs.c b/nuttx/libc/stdio/lib_fputs.c new file mode 100644 index 000000000..7b87a89d0 --- /dev/null +++ b/nuttx/libc/stdio/lib_fputs.c @@ -0,0 +1,220 @@ +/**************************************************************************** + * libc/stdio/lib_fputs.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 <nuttx/config.h> + +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include <nuttx/arch.h> + +#include "lib_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Global Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Constant Data + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: fputs + * + * Description: + * fputs() writes the string s to stream, without its trailing '\0'. + * + ****************************************************************************/ + +#if defined(CONFIG_ARCH_ROMGETC) +int fputs(FAR const char *s, FAR FILE *stream) +{ + int nput; + int ret; + char ch; + + /* Make sure that a string was provided. */ + +#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */ + if (!s) + { + set_errno(EINVAL); + return EOF; + } +#endif + + /* Write the string. Loop until the null terminator is encountered */ + + for (nput = 0, ch = up_romgetc(s); ch; nput++, s++, ch = up_romgetc(s)) + { + /* Write the next character to the stream buffer */ + + ret = lib_fwrite(&ch, 1, stream); + if (ret <= 0) + { + return EOF; + } + + /* Flush the buffer if a newline was written to the buffer */ + +#ifdef CONFIG_STDIO_LINEBUFFER + if (ch == '\n') + { + ret = lib_fflush(stream, true); + if (ret < 0) + { + return EOF; + } + } +#endif + } + + return nput; +} + +#elif defined(CONFIG_STDIO_LINEBUFFER) +int fputs(FAR const char *s, FAR FILE *stream) +{ + int nput; + int ret; + + /* Make sure that a string was provided. */ + +#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */ + if (!s) + { + set_errno(EINVAL); + return EOF; + } +#endif + + /* Write the string. Loop until the null terminator is encountered */ + + for (nput = 0; *s; nput++, s++) + { + /* Write the next character to the stream buffer */ + + ret = lib_fwrite(s, 1, stream); + if (ret <= 0) + { + return EOF; + } + + /* Flush the buffer if a newline was written to the buffer */ + + if (*s == '\n') + { + ret = lib_fflush(stream, true); + if (ret < 0) + { + return EOF; + } + } + } + + return nput; +} + +#else +int fputs(FAR const char *s, FAR FILE *stream) +{ + int ntowrite; + int nput; + + /* Make sure that a string was provided. */ + +#ifdef CONFIG_DEBUG /* Most parameter checking is disabled if DEBUG is off */ + if (!s) + { + set_errno(EINVAL); + return EOF; + } +#endif + + /* Get the length of the string. */ + + ntowrite = strlen(s); + if (ntowrite == 0) + { + return 0; + } + + /* Write the string */ + + nput = lib_fwrite(s, ntowrite, stream); + if (nput < 0) + { + return EOF; + } + return nput; +} +#endif |