--- ray/src/common/getpath.c	1991/11/12 16:55:56	2.1
+++ ray/src/common/getpath.c	2003/02/22 02:07:22	2.9
@@ -1,19 +1,77 @@
-/* Copyright (c) 1991 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: getpath.c,v 2.9 2003/02/22 02:07:22 greg Exp $";
 #endif
-
 /*
  *  getpath.c - function to search for file in a list of directories
+ *
+ *  External symbols declared in standard.h
  */
 
-#define  NULL		0
+/* ====================================================================
+ * The Radiance Software License, Version 1.0
+ *
+ * Copyright (c) 1990 - 2002 The Regents of the University of California,
+ * through Lawrence Berkeley National Laboratory.   All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *         notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *           if any, must include the following acknowledgment:
+ *             "This product includes Radiance software
+ *                 (http://radsite.lbl.gov/)
+ *                 developed by the Lawrence Berkeley National Laboratory
+ *               (http://www.lbl.gov/)."
+ *       Alternately, this acknowledgment may appear in the software itself,
+ *       if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
+ *       and "The Regents of the University of California" must
+ *       not be used to endorse or promote products derived from this
+ *       software without prior written permission. For written
+ *       permission, please contact radiance@radsite.lbl.gov.
+ *
+ * 5. Products derived from this software may not be called "Radiance",
+ *       nor may "Radiance" appear in their name, without prior written
+ *       permission of Lawrence Berkeley National Laboratory.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This software consists of voluntary contributions made by many
+ * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
+ * information on Lawrence Berkeley National Laboratory, please see
+ * <http://www.lbl.gov/>.
+ */
 
-#include  <pwd.h>
+#include  "standard.h"
 
-extern char  *strcpy(), *strcat(), *getenv();
+#include  "paths.h"
+
+#ifndef	 NIX
+#include  <pwd.h>
 extern struct passwd  *getpwnam();
+#endif
 
 
 char *
@@ -22,38 +80,45 @@ register char  *fname;
 register char  *searchpath;
 int  mode;
 {
-	static char  pname[256];
+#ifndef	 NIX
 	struct passwd  *pwent;
+#endif
+	static char  pname[MAXPATH];
 	register char  *cp;
 
 	if (fname == NULL)
 		return(NULL);
 
+	pname[0] = '\0';		/* check for full specification */
 	switch (*fname) {
-	case '/':				/* relative to root */
+	CASEDIRSEP:				/* relative to root */
 	case '.':				/* relative to cwd */
 		strcpy(pname, fname);
-		return(pname);
+		break;
+#ifndef NIX
 	case '~':				/* relative to home directory */
 		fname++;
-		if (*fname == '\0' || *fname == '/') {		/* ours */
+		if (*fname == '\0' || ISDIRSEP(*fname)) {	/* ours */
 			if ((cp = getenv("HOME")) == NULL)
 				return(NULL);
 			strcpy(pname, cp);
 			strcat(pname, fname);
-			return(pname);
+			break;
 		}
 		cp = pname;					/* user */
 		do
 			*cp++ = *fname++;
-		while (*fname && *fname != '/');
+		while (*fname && !ISDIRSEP(*fname));
 		*cp = '\0';
 		if ((pwent = getpwnam(pname)) == NULL)
 			return(NULL);
 		strcpy(pname, pwent->pw_dir);
 		strcat(pname, fname);
-		return(pname);
+		break;
+#endif
 	}
+	if (pname[0])		/* got it, check access if search requested */
+		return(searchpath==NULL||access(pname,mode)==0 ? pname : NULL);
 
 	if (searchpath == NULL) {			/* don't search */
 		strcpy(pname, fname);
@@ -62,10 +127,10 @@ int  mode;
 							/* check search path */
 	do {
 		cp = pname;
-		while (*searchpath && (*cp = *searchpath++) != ':')
+		while (*searchpath && (*cp = *searchpath++) != PATHSEP)
 			cp++;
-		if (cp > pname && cp[-1] != '/')
-			*cp++ = '/';
+		if (cp > pname && !ISDIRSEP(cp[-1]))
+			*cp++ = DIRSEP;
 		strcpy(cp, fname);
 		if (access(pname, mode) == 0)		/* file accessable? */
 			return(pname);