/* 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; } int FAST_FUNC xopen_stdin(const char *filename) { int fd = open_or_warn_stdin(filename); if (fd >= 0) return fd; xfunc_die(); /* We already output an error message. */ }