===================================================================
RCS file: /cvs/mandoc/mandoc.c,v
retrieving revision 1.4
retrieving revision 1.8
diff -u -p -r1.4 -r1.8
--- mandoc/mandoc.c	2009/10/28 19:21:59	1.4
+++ mandoc/mandoc.c	2009/11/05 10:16:01	1.8
@@ -1,4 +1,4 @@
-/*	$Id: mandoc.c,v 1.4 2009/10/28 19:21:59 kristaps Exp $ */
+/*	$Id: mandoc.c,v 1.8 2009/11/05 10:16:01 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -14,6 +14,10 @@
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
+#if defined(__linux__) || defined(__MINT__)
+# define _GNU_SOURCE /* strptime() */
+#endif
+
 #include <sys/types.h>
 
 #include <assert.h>
@@ -21,13 +25,19 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <time.h>
 
 #include "libmandoc.h"
 
+static int	 a2time(time_t *, const char *, const char *);
+
+
 int
 mandoc_special(const char *p)
 {
-	int		 c;
+	int		 terminator;	/* Terminator for \s. */
+	int		 lim;		/* Limit for N in \s. */
+	int		 c, i;
 	
 	if ('\\' != *p++)
 		return(0);
@@ -66,9 +76,84 @@ mandoc_special(const char *p)
 	case ('e'):
 		return(2);
 	case ('f'):
-		if (0 == *++p || ! isgraph((u_char)*p))
+		if ('\0' == *++p || ! isgraph((u_char)*p))
 			return(0);
 		return(3);
+	case ('s'):
+		if ('\0' == *++p)
+			return(2);
+
+		c = 2;
+		terminator = 0;
+		lim = 1;
+
+		if (*p == '\'') {
+			lim = 0;
+			terminator = 1;
+			++p;
+			++c;
+		} else if (*p == '[') {
+			lim = 0;
+			terminator = 2;
+			++p;
+			++c;
+		} else if (*p == '(') {
+			lim = 2;
+			terminator = 3;
+			++p;
+			++c;
+		}
+
+		if (*p == '+' || *p == '-') {
+			++p;
+			++c;
+		}
+
+		if (*p == '\'') {
+			if (terminator)
+				return(0);
+			lim = 0;
+			terminator = 1;
+			++p;
+			++c;
+		} else if (*p == '[') {
+			if (terminator)
+				return(0);
+			lim = 0;
+			terminator = 2;
+			++p;
+			++c;
+		} else if (*p == '(') {
+			if (terminator)
+				return(0);
+			lim = 2;
+			terminator = 3;
+			++p;
+			++c;
+		}
+
+		/* TODO: needs to handle floating point. */
+
+		if ( ! isdigit((u_char)*p))
+			return(0);
+
+		for (i = 0; isdigit((u_char)*p); i++) {
+			if (lim && i >= lim)
+				break;
+			++p;
+			++c;
+		}
+
+		if (terminator && terminator < 3) {
+			if (1 == terminator && *p != '\'')
+				return(0);
+			if (2 == terminator && *p != ']')
+				return(0);
+			++p;
+			++c;
+		}
+
+		return(c);
 	case ('*'):
 		if (0 == *++p || ! isgraph((u_char)*p))
 			return(0);
@@ -113,7 +198,7 @@ mandoc_calloc(size_t num, size_t size)
 
 	ptr = calloc(num, size);
 	if (NULL == ptr) {
-		fprintf(stderr, "memory exhausted\n");
+		perror(NULL);
 		exit(EXIT_FAILURE);
 	}
 
@@ -128,7 +213,7 @@ mandoc_malloc(size_t size)
 
 	ptr = malloc(size);
 	if (NULL == ptr) {
-		fprintf(stderr, "memory exhausted\n");
+		perror(NULL);
 		exit(EXIT_FAILURE);
 	}
 
@@ -142,7 +227,7 @@ mandoc_realloc(void *ptr, size_t size)
 
 	ptr = realloc(ptr, size);
 	if (NULL == ptr) {
-		fprintf(stderr, "memory exhausted\n");
+		perror(NULL);
 		exit(EXIT_FAILURE);
 	}
 
@@ -150,19 +235,6 @@ mandoc_realloc(void *ptr, size_t size)
 }
 
 
-void *
-mandoc_reallocf(void *old_ptr, size_t size) /* FIXME: remove (not used) */
-{
-	void		*ptr;
-
-	ptr = realloc(old_ptr, size);
-	if (NULL == ptr)
-		free(old_ptr);
-
-	return(ptr);
-}
-
-
 char *
 mandoc_strdup(const char *ptr)
 {
@@ -170,9 +242,63 @@ mandoc_strdup(const char *ptr)
 
 	p = strdup(ptr);
 	if (NULL == p) {
-		fprintf(stderr, "memory exhausted\n");
+		perror(NULL);
 		exit(EXIT_FAILURE);
 	}
 
 	return(p);
 }
+
+
+static int
+a2time(time_t *t, const char *fmt, const char *p)
+{
+	struct tm	 tm;
+	char		*pp;
+
+	memset(&tm, 0, sizeof(struct tm));
+
+	pp = strptime(p, fmt, &tm);
+	if (NULL != pp && '\0' == *pp) {
+		*t = mktime(&tm);
+		return(1);
+	}
+
+	return(0);
+}
+
+
+/*
+ * Convert from a manual date string (see mdoc(7) and man(7)) into a
+ * date according to the stipulated date type.
+ */
+time_t
+mandoc_a2time(int flags, const char *p)
+{
+	time_t		 t;
+
+	if (MTIME_MDOCDATE & flags) {
+		if (0 == strcmp(p, "$" "Mdocdate$"))
+			return(time(NULL));
+		if (a2time(&t, "$" "Mdocdate: %b %d %Y $", p))
+			return(t);
+	}
+
+	if (MTIME_CANONICAL & flags || MTIME_REDUCED & flags) 
+		if (a2time(&t, "%b %d, %Y", p))
+			return(t);
+
+	if (MTIME_ISO_8601 & flags) 
+		if (a2time(&t, "%Y-%m-%d", p))
+			return(t);
+
+	if (MTIME_REDUCED & flags) {
+		if (a2time(&t, "%d, %Y", p))
+			return(t);
+		if (a2time(&t, "%Y", p))
+			return(t);
+	}
+
+	return(0);
+}
+