===================================================================
RCS file: /cvs/mandoc/out.c,v
retrieving revision 1.3
retrieving revision 1.7
diff -u -p -r1.3 -r1.7
--- mandoc/out.c	2009/10/07 12:35:24	1.3
+++ mandoc/out.c	2009/10/22 18:59:00	1.7
@@ -1,4 +1,4 @@
-/*	$Id: out.c,v 1.3 2009/10/07 12:35:24 kristaps Exp $ */
+/*	$Id: out.c,v 1.7 2009/10/22 18:59:00 kristaps Exp $ */
 /*
  * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -16,47 +16,65 @@
  */
 #include <sys/types.h>
 
+#include <assert.h>
 #include <ctype.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include <time.h>
 
 #include "out.h"
 
+#ifdef __linux__
+extern	size_t	  strlcat(char *, const char *, size_t);
+#endif
 
 /* 
  * Convert a `scaling unit' to a consistent form, or fail.  Scaling
- * units are documented in groff.7, which stipulates the following:
- *
- *  (1) A scaling unit is a signed/unsigned integer/float with or
- *      without a unit.
- *
- *  (2) The following units exist:
- *	c	Centimeter
- *	i	Inch
- *	P	Pica = 1/6 inch
- *	p	Point = 1/72 inch
- *	m	Em = the font size in points (width of letter m)
- *	M	100th of an Em 
- *	n	En = Em/2 
- *	u	Basic unit for actual output device
- *	v	Vertical line space in basic units scaled point =
- *		1/sizescale of a point (defined in font DESC file)
- *	f	Scale by 65536.
+ * units are documented in groff.7, mdoc.7, man.7.
  */
 int
-a2roffsu(const char *src, struct roffsu *dst)
+a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
 {
-	char		 buf[BUFSIZ], *p;
+	char		 buf[BUFSIZ], hasd;
 	int		 i;
 	enum roffscale	 unit;
 
-	for (p = buf, i = 0; i < BUFSIZ && isdigit((u_char)*src); i++)
-		*p++ = *src++;
+	if ('\0' == *src)
+		return(0);
 
+	i = hasd = 0;
+
+	switch (*src) {
+	case ('+'):
+		src++;
+		break;
+	case ('-'):
+		buf[i++] = *src++;
+		break;
+	default:
+		break;
+	}
+
+	if ('\0' == *src)
+		return(0);
+
+	while (i < BUFSIZ) {
+		if ( ! isdigit((u_char)*src)) {
+			if ('.' != *src)
+				break;
+			else if (hasd)
+				break;
+			else
+				hasd = 1;
+		}
+		buf[i++] = *src++;
+	}
+
 	if (BUFSIZ == i || (*src && *(src + 1)))
 		return(0);
 
-	*p = '\0';
+	buf[i] = '\0';
 
 	switch (*src) {
 	case ('c'):
@@ -81,7 +99,10 @@ a2roffsu(const char *src, struct roffsu *dst)
 		unit = SCALE_EM;
 		break;
 	case ('\0'):
-		/* FALLTHROUGH */
+		if (SCALE_MAX == def)
+			return(0);
+		unit = SCALE_BU;
+		break;
 	case ('u'):
 		unit = SCALE_BU;
 		break;
@@ -95,8 +116,53 @@ a2roffsu(const char *src, struct roffsu *dst)
 		return(0);
 	}
 
-	if ((dst->scale = atoi(buf)) < 0)
+	if ((dst->scale = atof(buf)) < 0)
 		dst->scale = 0;
 	dst->unit = unit;
+	dst->pt = hasd;
+
 	return(1);
 }
+
+
+/*
+ * Correctly writes the time in nroff form, which differs from standard
+ * form in that a space isn't printed in lieu of the extra %e field for
+ * single-digit dates.
+ */
+void
+time2a(time_t t, char *dst, size_t sz)
+{
+	struct tm	 tm;
+	char		 buf[5];
+	char		*p;
+	size_t		 nsz;
+
+	assert(sz > 1);
+	localtime_r(&t, &tm);
+
+	p = dst;
+	nsz = 0;
+
+	dst[0] = '\0';
+
+	if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
+		return;
+
+	p += (int)nsz;
+	sz -= nsz;
+
+	if (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
+		return;
+
+	nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
+
+	if (nsz >= sz)
+		return;
+
+	p += (int)nsz;
+	sz -= nsz;
+
+	(void)strftime(p, sz, "%Y", &tm);
+}
+