--- ray/src/common/paths.h	2004/10/30 04:59:41	2.21
+++ ray/src/common/paths.h	2012/06/29 23:09:06	2.24
@@ -1,4 +1,4 @@
-/* RCSid $Id: paths.h,v 2.21 2004/10/30 04:59:41 greg Exp $ */
+/* RCSid $Id: paths.h,v 2.24 2012/06/29 23:09:06 greg Exp $ */
 /*
  * Definitions for paths on different machines
  */
@@ -14,19 +14,17 @@
 
 #ifdef _WIN32
   #include <io.h>
-  #include <direct.h> /* getcwd(), chdir(), etc. */
+  #include <direct.h> /* getcwd(), chdir(), _mkdir(), etc. */
 
   #define access _access
+  #define mkdir(dirname,perms) _mkdir(dirname)
   #define PATH_MAX _MAX_PATH
   #define NULL_DEVICE	"NUL"
   #define DIRSEP		'/'
-  #define ISDIRSEP(c)	((c)=='/' || (c)=='\\')
-  #define ISABS(s)	((s)!=NULL \
-		  && (s[0])!='\0' \
-          && (   ISDIRSEP(s[0]) \
-              || (   (s[1])!='\0' \
-                  && (isupper(s[0])||islower(s[0])) \
-                  && (s[1])==':')))
+  #define ISDIRSEP(c)	(((c)=='/') | ((c)=='\\'))
+  #define ISABS(s)	( ISDIRSEP((s)[0]) \
+		|| ( isupper((s)[0]) | islower((s)[0]) \
+			&& (s)[1]==':' && ISDIRSEP((s)[2]) ) )
   #define CASEDIRSEP	case '/': case '\\'
   #define PATHSEP		';'
   #define CURDIR		'.'
@@ -40,10 +38,12 @@
   /* <io.h> only does half the work for access() */
   #ifndef F_OK
     #define  F_OK 00
-    #define  X_OK 01
     #define  W_OK 02
-    #define  R_OK 04
   #endif
+  #ifndef R_OK
+    #define X_OK 01
+    #define R_OK 04
+  #endif
   /* to make the permissions user specific we'd need to use CreateFile() */
   #ifndef S_IRUSR
     #define S_IRUSR _S_IREAD
@@ -74,7 +74,7 @@
 
 	#define NULL_DEVICE	"NIL:"
     #define DIRSEP		'/'
-    #define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
+    #define ISABS(s)		ISDIRSEP((s)[0])
     #define PATHSEP		';'
 	#define CURDIR		'.'
     #define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}
@@ -93,7 +93,7 @@
 	/* this is defined as _PATH_DEVNULL in /usr/include/paths.h on Linux */
 	#define NULL_DEVICE	"/dev/null"
     #define DIRSEP		'/'
-    #define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
+    #define ISABS(s)		ISDIRSEP((s)[0])
     #define PATHSEP		':'
 	#define CURDIR		'.'
     #define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}