fputs.c

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#include <stdio.h>
 
#include "user/common/file.h"
 
int fputs(const char* _RESTRICT s, FILE* _RESTRICT stream)
{
    mtx_lock(&stream->mtx);
 
    if (_file_prepare_write(stream) == ERR)
    {
        mtx_unlock(&stream->mtx);
        return EOF;
    }
 
    while (*s != '\0')
    {
        stream->buf[stream->bufIndex++] = *s;
 
        if ((stream->bufIndex == stream->bufSize) || ((stream->flags & _FILE_LINE_BUFFERED) && *s == '\n'))
        {
            if (_file_flush_buffer(stream) == ERR)
            {
                mtx_unlock(&stream->mtx);
                return EOF;
            }
        }
 
        ++s;
    }
 
    if (stream->flags & _FILE_UNBUFFERED)
    {
        if (_file_flush_buffer(stream) == ERR)
        {
            mtx_unlock(&stream->mtx);
            return EOF;
        }
    }
 
    mtx_unlock(&stream->mtx);
 
    return 0;
}