diff options
Diffstat (limited to 'posix/getopt_init.c')
| -rw-r--r-- | posix/getopt_init.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/posix/getopt_init.c b/posix/getopt_init.c deleted file mode 100644 index 498b301433..0000000000 --- a/posix/getopt_init.c +++ /dev/null @@ -1,74 +0,0 @@ -/* Perform additional initialization for getopt functions in GNU libc. - Copyright (C) 1997-2017 Free Software Foundation, Inc. - This file is part of the GNU C Library. - Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. - - The GNU 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 2.1 of the License, or (at your option) any later version. - - The GNU 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 GNU C Library; if not, see - <http://www.gnu.org/licenses/>. */ - -#ifdef USE_NONOPTION_FLAGS -/* Attention: this file is *not* necessary when the GNU getopt functions - are used outside the GNU libc. Some additional functionality of the - getopt functions in GNU libc require this additional work. */ - -#include <getopt.h> -#include <string.h> -#include <unistd.h> -#include <sys/types.h> - -#include <_itoa.h> - -/* Variable to synchronize work. */ -char *__getopt_nonoption_flags; - - -/* Remove the environment variable "_<PID>_GNU_nonoption_argv_flags_" if - it is still available. If the getopt functions are also used in the - application it does not exist anymore since it was saved for the use - in getopt. */ -void -__getopt_clean_environment (char **env) -{ - /* Bash 2.0 puts a special variable in the environment for each - command it runs, specifying which ARGV elements are the results - of file name wildcard expansion and therefore should not be - considered as options. */ - static const char envvar_tail[] = "_GNU_nonoption_argv_flags_="; - char var[50]; - char *cp, **ep; - size_t len; - - /* Construct the "_<PID>_GNU_nonoption_argv_flags_=" string. We must - not use `sprintf'. */ - cp = memcpy (&var[sizeof (var) - sizeof (envvar_tail)], envvar_tail, - sizeof (envvar_tail)); - cp = _itoa_word (__getpid (), cp, 10, 0); - /* Note: we omit adding the leading '_' since we explicitly test for - it before calling strncmp. */ - len = (var + sizeof (var) - 1) - cp; - - for (ep = env; *ep != NULL; ++ep) - if ((*ep)[0] == '_' - && __builtin_expect (strncmp (*ep + 1, cp, len) == 0, 0)) - { - /* Found it. Store this pointer and move later ones back. */ - char **dp = ep; - __getopt_nonoption_flags = &(*ep)[len]; - do - dp[0] = dp[1]; - while (*dp++); - /* Continue the loop in case the name appears again. */ - } -} -#endif /* USE_NONOPTION_FLAGS */ |