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sortix--sortix/libc/stdio/stdio.cpp
2013-12-17 14:30:39 +01:00

74 lines
2 KiB
C++

/*******************************************************************************
Copyright(C) Jonas 'Sortie' Termansen 2011.
This file is part of the Sortix C Library.
The Sortix C Library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at your
option) any later version.
The Sortix C Library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
stdio/stdio.cpp
Sets up stdin, stdout, stderr.
*******************************************************************************/
#define __SORTIX_STDLIB_REDIRECTS 0
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "fdio.h"
extern "C" { FILE* stdin; }
extern "C" { FILE* stdout; }
extern "C" { FILE* stderr; }
extern "C" int init_stdio()
{
// TODO: These calls require memory allocation and can fail - which we don't
// currently handle. How about declaring these as global objects and
// using fdio_install_fd instead?
stdin = fdio_new_fd(0, "r");
stdout = fdio_new_fd(1, "w");
stderr = fdio_new_fd(2, "w");
setvbuf(stderr, NULL, _IONBF, 0);
return 0;
}
extern "C" int getchar(void)
{
return fgetc(stdin);
}
extern "C" int putchar(int c)
{
return fputc(c, stdout);
}
extern "C" char* sortix_gets(void)
{
char* buf = NULL;
size_t n;
if ( getline(&buf, &n, stdin) < 0 )
return NULL;
size_t linelen = strlen(buf);
if ( linelen && buf[linelen-1] == '\n' ) { buf[linelen-1] = 0; }
return buf;
}
extern "C" int puts(const char* str)
{
return printf("%s\n", str) < 0 ? EOF : 1;
}