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authorIan Lance Taylor <ian@airs.com>2000-02-22 15:59:20 +0000
committerIan Lance Taylor <ian@airs.com>2000-02-22 15:59:20 +0000
commite2eaf477991014a67bc122c3225f6a3fe6d1a8e6 (patch)
tree5937dcfd1baa6d55a635fde513e946dc33a05ca3 /libiberty/putenv.c
parent252b5132c753830d5fd56823373aed85f2a0db63 (diff)
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import libiberty from egcs
Diffstat (limited to 'libiberty/putenv.c')
-rw-r--r--libiberty/putenv.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/libiberty/putenv.c b/libiberty/putenv.c
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+/* Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc.
+ This file based on putenv.c in the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#if defined (_AIX) && !defined (__GNUC__)
+ #pragma alloca
+#endif
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "ansidecl.h"
+
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+#if HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_ALLOCA_H
+# include <alloca.h>
+#else
+# ifndef alloca
+# ifdef __GNUC__
+# define alloca __builtin_alloca
+# else
+extern char *alloca ();
+# endif /* __GNUC__ */
+# endif /* alloca */
+#endif /* HAVE_ALLOCA_H */
+
+/* Below this point, it's verbatim code from the glibc-2.0 implementation */
+
+
+/* Put STRING, which is of the form "NAME=VALUE", in the environment. */
+int
+putenv (string)
+ const char *string;
+{
+ const char *const name_end = strchr (string, '=');
+
+ if (name_end)
+ {
+ char *name = (char *) alloca (name_end - string + 1);
+ memcpy (name, string, name_end - string);
+ name[name_end - string] = '\0';
+ return setenv (name, name_end + 1, 1);
+ }
+
+ unsetenv (string);
+ return 0;
+}