* Routines that certainly will be shared between Linux and *BSD

rtl/unix/posixunx.inc

@@ -0,0 +1,73 @@
+{
+    $Id$
+    This file is part of the Free Pascal run time library.
+    Copyright (c) 2002 by Marco van de Voort.
+
+    A few general purpose routines. General purpose enough for *BSD
+     and Linux at least.
+
+    See the file COPYING.FPC, included in this distribution,
+    for details about the copyright.
+
+    This program 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.
+
+ **********************************************************************}
+
+Function sys_getenv(const name:pchar):pchar;
+
+var
+  p     : ppchar;
+  found : boolean;
+  np,cp : pchar;
+  len,i : longint;
+Begin
+  if (name=nil) or (envp=NIL) Then
+   exit(NIL);
+  np:=name;
+  while (np^<>#0) and (np^<>'=') DO
+   inc(np);
+  len:=np-name;
+  p:=envp;
+  while (p^<>NIL) DO
+   Begin
+    cp:=p^;
+    np:=name;
+    i:=len;
+    while (i<>0) and (cp^<>#0) DO
+      Begin
+        if cp^<>np^ Then
+	  Begin
+ 	   inc(cp); inc(np);
+	   break;
+         End;
+        inc(cp); inc(np);
+	dec(i)
+      End;  
+    if (i=0) and (cp^='=') Then
+	exit(cp+1);
+   inc(p);
+  end;
+End;
+
+Function sys_getenv(name:string):Pchar;
+{
+  Searches the environment for a string with name p and
+  returns a pchar to it's value.
+  A pchar is used to accomodate for strings of length > 255
+}
+
+
+Begin
+  name:=name+'=';            {Else HOST will also find HOSTNAME, etc}
+  sys_getenv:=sys_getenv(@name[1]);
+end;
+
+{
+  $Log$
+  Revision 1.1  2002-10-27 13:16:54  marco
+   * Routines that certainly will be shared between Linux and *BSD
+
+
+}