--- ray/src/common/paths.h	1992/10/09 10:26:17	2.4
+++ ray/src/common/paths.h	2003/06/08 12:01:52	2.13
@@ -1,32 +1,62 @@
-/* Copyright (c) 1992 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid $Id: paths.h,v 2.13 2003/06/08 12:01:52 schorsch Exp $ */
 /*
  * Definitions for paths on different machines
  */
+#ifndef _RAD_PATHS_H_
+#define _RAD_PATHS_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-#ifdef MSDOS
+#include "copyright.h"
 
+#include <stdlib.h>
+#include <string.h>
+#ifdef _WIN32
+ #include <io.h>
+ #define access _access
+ #define PATH_MAX _MAX_PATH
+#else /* _WIN32 */
+ #include <unistd.h>
+ #include <sys/param.h>
+#endif /* _WIN32 */
+
+#ifdef _WIN32
+
 #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 CASEDIRSEP	case '/': case '\\'
 #define PATHSEP		';'
 #define MAXPATH		128
-#define TEMPLATE	"c:\\tmp\\rtXXXXXX"
-#define TEMPLEN		15
+#define DEFAULT_TEMPDIRS {"C:/TMP", "C:/TEMP", ".", NULL}
+#define TEMPLATE	"rtXXXXXX"
+#define TEMPLEN		8
 #define ULIBVAR		"RAYPATH"
 #ifndef DEFPATH
 #define DEFPATH		";c:/ray/lib"
 #endif
+/* <io.h> only does half the work for access() */
+#ifndef F_OK
+#define  F_OK 00
+#define  W_OK 02
+#define  R_OK 04
+#endif
 extern char  *fixargv0();
 
 #else
 #ifdef AMIGA
 
 #define DIRSEP		'/'
+#define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
 #define PATHSEP		';'
 #define MAXPATH		128
+#define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}
 #define TEMPLATE	"/tmp/rtXXXXXX"
 #define TEMPLEN		13
 #define ULIBVAR		"RAYPATH"
@@ -38,10 +68,12 @@ extern char  *fixargv0();
 #else
 
 #define DIRSEP		'/'
+#define ISABS(s) ((s)!=NULL && (ISDIRSEP(s[0])))
 #define PATHSEP		':'
 #define MAXPATH		256
-#define TEMPLATE	"/tmp/rtXXXXXX"
-#define TEMPLEN		13
+#define DEFAULT_TEMPDIRS {"/var/tmp", "/usr/tmp", "/tmp", ".", NULL}
+#define TEMPLATE	"/usr/tmp/rtXXXXXX"
+#define TEMPLEN		17
 #define ULIBVAR		"RAYPATH"
 #ifndef DEFPATH
 #define DEFPATH		":/usr/local/lib/ray"
@@ -59,3 +91,37 @@ extern char  *fixargv0();
 #endif
 
 extern char  *mktemp(), *getenv();
+
+#ifdef BSD
+extern char  *getwd();
+#else
+extern char  *getcwd();
+#define  getwd(p)	getcwd(p, sizeof(p))
+#endif
+
+
+/* Find a writeable directory for temporary files */
+/* If s is NULL, we return a static string */
+extern char *temp_directory(char *s, size_t len);
+
+/* Compose a *currently* unique name within a temporary directory */
+/* If s is NULL, we return a static string */
+/* If templ is NULL, we take our default template */
+/* WARNING: On Windows, there's a maximum of 27 unique names within
+            one process for the same template. */
+extern char *temp_filename(char *s, size_t len, char *templ);
+
+/* Same as above, but also open the file and return the descriptor */
+/* This one is supposed to protect against race conditions on unix */
+/* WARNING: On Windows, there's no protection against race conditions */
+extern int temp_file(char *s, size_t len, char *templ);
+
+/* Concatenate two strings, leaving exactly one DIRSEP in between */
+extern char *append_filepath(char *s1, char *s2, size_t len);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_PATHS_H_ */
+