update CLib

git-svn-id: svn://kolibrios.org@614 a494cfbc-eb01-0410-851d-a64ba20cac60

programs/develop/open watcom/trunk/clib/environ/setenvp.c

@@ -0,0 +1,127 @@
+/****************************************************************************
+*
+*                            Open Watcom Project
+*
+*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
+*
+*  ========================================================================
+*
+*    This file contains Original Code and/or Modifications of Original
+*    Code as defined in and that are subject to the Sybase Open Watcom
+*    Public License version 1.0 (the 'License'). You may not use this file
+*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
+*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
+*    provided with the Original Code and Modifications, and is also
+*    available at www.sybase.com/developer/opensource.
+*
+*    The Original Code and all software distributed under the License are
+*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
+*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
+*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
+*    NON-INFRINGEMENT. Please see the License for the specific language
+*    governing rights and limitations under the License.
+*
+*  ========================================================================
+*
+* Description:  Routines to create/destroy clib copy of OS environment.
+*
+****************************************************************************/
+
+
+#include "variety.h"
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <env.h>
+#include "liballoc.h"
+#include <string.h>
+#include "filestr.h"
+#include "rtdata.h"
+
+extern char _WCI86FAR *_Envptr;
+
+static char *_free_ep;
+
+#define allocate lib_malloc
+
+void __setenvp( void )
+{
+#if defined(__NETWARE__)
+    // no environment support
+#elif defined(__LINUX__)
+#else
+    char        _WCI86FAR *startp;
+    char        _WCI86FAR *p;
+    char    *ep;
+    char    *my_env_mask;
+    char    **my_environ;
+    int     count;
+    size_t  ep_size;
+    size_t  env_size;
+
+    /* if we are already initialized, then return */
+    if( _RWD_environ != NULL ) return;           /* 10-jun-90 */
+
+    // env_size = sys_get_environ(0,0)+1;
+    // _Envptr = lib_malloc(env_size);
+    // sys_get_environ(_Envptr, env_size)
+    
+    startp = _Envptr;
+    
+    count = 0;
+    p = startp;
+    while( *p ) {
+        while( *++p );
+        ++count;
+        ++p;
+    }
+    ep_size = p - startp;
+    if( ep_size == 0 ) {
+        ep_size = 1;
+    }
+    ep = (char *)allocate( ep_size );
+    if( ep ) {
+        env_size = (count + 1) * sizeof(char *) + count * sizeof(char);
+        my_environ = (char **)allocate( env_size );
+        if( my_environ ) {
+            _RWD_environ = my_environ;
+            p = startp;
+            _free_ep = ep;
+            while( *p ) {
+                *my_environ++ = ep;
+                while( *ep++ = *p++ )
+                    ;
+            }
+            *my_environ++ = NULL;
+            _RWD_env_mask = my_env_mask = (char *) my_environ;
+            for( ; count; count-- )
+                *my_env_mask++ = 0;
+        } else {
+            lib_free( ep );
+        }
+    }
+
+    /*** Handle the C_FILE_INFO entry ***/
+    #ifdef __USE_POSIX_HANDLE_STRINGS
+ //       __ParsePosixHandleStr();
+    #endif
+#endif
+}
+
+#if !defined(__NETWARE__) && !defined(__LINUX__)
+
+void __freeenvp( void )
+{
+    clearenv();
+    if( _RWD_environ ) {
+        lib_free( _RWD_environ );
+        _RWD_environ = NULL;
+    }
+    if( _free_ep ) {
+        lib_free( _free_ep );
+        _free_ep = NULL;
+    }
+}
+
+#endif