hush/libbb/wfopen_input.c
Denys Vlasenko 0ef64bdb40 *: make GNU licensing statement forms more regular
This change retains "or later" state! No licensing _changes_ here,
only form is adjusted (article, space between "GPL" and "v2" and so on).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2010-08-16 20:14:46 +02:00

49 lines
1.0 KiB
C

/* vi: set sw=4 ts=4: */
/*
* wfopen_input implementation for busybox
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* A number of applets need to open a file for reading, where the filename
* is a command line arg. Since often that arg is '-' (meaning stdin),
* we avoid testing everywhere by consolidating things in this routine.
*/
#include "libbb.h"
FILE* FAST_FUNC fopen_or_warn_stdin(const char *filename)
{
FILE *fp = stdin;
if (filename != bb_msg_standard_input
&& NOT_LONE_DASH(filename)
) {
fp = fopen_or_warn(filename, "r");
}
return fp;
}
FILE* FAST_FUNC xfopen_stdin(const char *filename)
{
FILE *fp = fopen_or_warn_stdin(filename);
if (fp)
return fp;
xfunc_die(); /* We already output an error message. */
}
int FAST_FUNC open_or_warn_stdin(const char *filename)
{
int fd = STDIN_FILENO;
if (filename != bb_msg_standard_input
&& NOT_LONE_DASH(filename)
) {
fd = open_or_warn(filename, O_RDONLY);
}
return fd;
}