--- ray/src/common/header.c	2009/05/21 18:08:43	2.25
+++ ray/src/common/header.c	2017/05/10 18:02:08	2.31
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: header.c,v 2.25 2009/05/21 18:08:43 greg Exp $";
+static const char	RCSid[] = "$Id: header.c,v 2.31 2017/05/10 18:02:08 greg Exp $";
 #endif
 /*
  *  header.c - routines for reading and writing information headers.
@@ -31,6 +31,8 @@ static const char	RCSid[] = "$Id: header.c,v 2.25 2009
 
 #define	 MAXLINE	2048
 
+extern time_t		timegm(struct tm *tm);
+
 const char  HDRSTR[] = "#?";		/* information header magic number */
 
 const char  FMTSTR[] = "FORMAT=";	/* format identifier */
@@ -41,9 +43,9 @@ const char  GMTSTR[] = "GMT=";		/* GMT identifier */
 static gethfunc mycheck;
 
 
-extern void
+void
 newheader(		/* identifying line of information header */
-	char  *s,
+	const char  *s,
 	FILE  *fp
 )
 {
@@ -53,10 +55,10 @@ newheader(		/* identifying line of information header 
 }
 
 
-extern int
+int
 headidval(			/* get header id (return true if is id) */
 	char  *r,
-	char	*s
+	const char	*s
 )
 {
 	const char  *cp = HDRSTR;
@@ -69,10 +71,10 @@ headidval(			/* get header id (return true if is id) *
 }
 
 
-extern int
+int
 dateval(		/* convert capture date line to UTC */
 	time_t	*tloc,
-	char	*s
+	const char	*s
 )
 {
 	struct tm	tms;
@@ -95,10 +97,10 @@ dateval(		/* convert capture date line to UTC */
 }
 
 
-extern int
+int
 gmtval(			/* convert GMT date line to UTC */
 	time_t	*tloc,
-	char	*s
+	const char	*s
 )
 {
 	struct tm	tms;
@@ -120,7 +122,7 @@ gmtval(			/* convert GMT date line to UTC */
 }
 
 
-extern void
+void
 fputdate(		/* write out the given time value (local & GMT) */
 	time_t	tv,
 	FILE	*fp
@@ -141,7 +143,7 @@ fputdate(		/* write out the given time value (local & 
 }
 
 
-extern void
+void
 fputnow(			/* write out the current time */
 	FILE	*fp
 )
@@ -152,7 +154,7 @@ fputnow(			/* write out the current time */
 }
 
 
-extern void
+void
 printargs(		/* print arguments to a file */
 	int  ac,
 	char  **av,
@@ -166,10 +168,10 @@ printargs(		/* print arguments to a file */
 }
 
 
-extern int
+int
 formatval(			/* get format value (return true if format) */
 	char  *r,
-	char  *s
+	const char  *s
 )
 {
 	const char  *cp = FMTSTR;
@@ -180,15 +182,15 @@ formatval(			/* get format value (return true if forma
 	if (r == NULL) return(1);
 	do
 		*r++ = *s++;
-	while(*s && !isspace(*s));
+	while (*s && !isspace(*s));
 	*r = '\0';
 	return(1);
 }
 
 
-extern void
+void
 fputformat(		/* put out a format value */
-	char  *s,
+	const char  *s,
 	FILE  *fp
 )
 {
@@ -198,31 +200,30 @@ fputformat(		/* put out a format value */
 }
 
 
-extern int
+int
 getheader(		/* get header from file */
 	FILE  *fp,
 	gethfunc *f,
 	void  *p
 )
 {
+	int   rtotal = 0;
 	char  buf[MAXLINE];
 
 	for ( ; ; ) {
+		int	rval = 0;
 		buf[MAXLINE-2] = '\n';
 		if (fgets(buf, MAXLINE, fp) == NULL)
 			return(-1);
-		if (buf[0] == '\n')
-			return(0);
-#ifdef MSDOS
-		if (buf[0] == '\r' && buf[1] == '\n')
-			return(0);
-#endif
+		if (buf[buf[0]=='\r'] == '\n')
+			return(rtotal);
 		if (buf[MAXLINE-2] != '\n') {
 			ungetc(buf[MAXLINE-2], fp);	/* prevent false end */
 			buf[MAXLINE-2] = '\0';
 		}
-		if (f != NULL && (*f)(buf, p) < 0)
+		if (f != NULL && (rval = (*f)(buf, p)) < 0)
 			return(-1);
+		rtotal += rval;
 	}
 }
 
@@ -247,10 +248,10 @@ mycheck(			/* check a header line for format info. */
 }
 
 
-extern int
+int
 globmatch(			/* check for match of s against pattern p */
-	char	*p,
-	char	*s
+	const char	*p,
+	const char	*s
 )
 {
 	int	setmatch;
@@ -264,7 +265,7 @@ globmatch(			/* check for match of s against pattern p
 		case '*':			/* match any string */
 			while (p[1] == '*') p++;
 			do
-				if ( (p[1]=='?' || p[1]==*s) &&
+				if ( (p[1]=='?') | (p[1]==*s) &&
 						globmatch(p+1,s) )
 					return(1);
 			while (*s++);
@@ -277,11 +278,11 @@ globmatch(			/* check for match of s against pattern p
 				if (!*p)
 					return(0);
 				if (*p == '-') {
-					setmatch += p[-1] <= *s && *s <= p[1];
+					setmatch += (p[-1] <= *s && *s <= p[1]);
 					if (!*++p)
 						break;
 				} else
-					setmatch += *p == *s;
+					setmatch += (*p == *s);
 			}
 			if (!setmatch)
 				return(0);
@@ -315,7 +316,7 @@ globmatch(			/* check for match of s against pattern p
  * if fout is not NULL.
  */
 
-extern int
+int
 checkheader(
 	FILE  *fin,
 	char  *fmt,