107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/* stdout_console.c */
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/*
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* Copyright (c) 2014 Wind River Systems, Inc.
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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 are met:
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*
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* 1) Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2) Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3) Neither the name of Wind River Systems nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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#include <stdio.h>
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static int _stdout_hook_default(int c)
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{
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(void)(c); /* Prevent warning about unused argument */
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return EOF;
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}
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static int (*_stdout_hook)(int) = _stdout_hook_default;
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void __stdout_hook_install(int (*hook)(int))
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{
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_stdout_hook = hook;
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}
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int fputc(int c, FILE *stream)
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{
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return (stdout == stream) ? _stdout_hook(c) : EOF;
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}
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int fputs(const char *restrict string, FILE *restrict stream)
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{
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int c;
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if (stream != stdout) {
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return EOF;
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}
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for (c = (int) *string; c != 0; string++) {
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if (_stdout_hook(c) == EOF) {
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return EOF;
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}
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}
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return 0;
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}
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size_t fwrite(const void *restrict ptr, size_t size, size_t nitems,
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FILE *restrict stream)
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{
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size_t i;
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size_t j;
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const unsigned char *p;
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if ((stream != stdout) || (nitems == 0) || (size == 0)) {
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return 0;
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}
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p = ptr;
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i = nitems;
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do {
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j = size;
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do {
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if (_stdout_hook((int) *p) == EOF)
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goto done;
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j--;
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} while (j > 0);
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i--;
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} while (i > 0);
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done:
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return (nitems - i);
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}
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int puts(const char *string)
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{
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if (fputs(string, stdout) == EOF) {
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return EOF;
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}
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return (_stdout_hook((int) '\n') == EOF) ? EOF : 0;
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}
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