pod2mdoc: Translate leading #include statements in verbatim SYNOPSIS

[kristaps@mdocml.bsd.lv]

Log Message:
-----------
Translate leading #include statements in verbatim SYNOPSIS text as In.

Modified Files:
--------------
    pod2mdoc:
        pod2mdoc.1
        pod2mdoc.c

Revision Data
-------------
Index: pod2mdoc.c
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/pod2mdoc/pod2mdoc.c,v
retrieving revision 1.21
retrieving revision 1.22
diff -Lpod2mdoc.c -Lpod2mdoc.c -u -p -r1.21 -r1.22
--- pod2mdoc.c
+++ pod2mdoc.c
@@ -850,10 +850,47 @@ static void
 verbatim(struct state *st, const char *buf, size_t start, size_t end)
 {
 	int		 last;
+	size_t		 i;
 
 	if ( ! st->parsing || st->paused)
 		return;
-
+again:
+	/* 
+	 * If we're in the SYNOPSIS, see if we're an #include block.
+	 * If we are, then print the "In" macro and re-loop.
+	 * This handles any number of inclusions, but only when they
+	 * come before the remaining parts...
+	 */
+	if (SECT_SYNOPSIS == st->sect) {
+		i = start;
+		for (i = start; i < end && ' ' == buf[i]; i++)
+			/* Spin. */ ;
+		if (i == end)
+			return;
+		/* We're an include block! */
+		if (end - i > 10 && 
+			0 == memcmp(&buf[i], "#include <", 10)) {
+			start = i + 10;
+			while (start < end && ' ' == buf[start])
+				start++;
+			fputs(".In ", stdout);
+			/* Stop til the '>' marker or we hit eoln. */
+			while (start < end && 
+				'>' != buf[start] && '\n' != buf[start])
+				putchar(buf[start++]);
+			putchar('\n');
+			if (start < end && '>' == buf[start])
+				start++;
+			if (start < end && '\n' == buf[start])
+				start++;
+			if (start < end) 
+				goto again;
+			return;
+		}
+	}
+	
+	if (start == end)
+		return;
 	puts(".Bd -literal");
 	for (last = ' '; start < end; start++) {
 		/*
Index: pod2mdoc.1
===================================================================
RCS file: /usr/vhosts/mdocml.bsd.lv/cvs/pod2mdoc/pod2mdoc.1,v
retrieving revision 1.11
retrieving revision 1.12
diff -Lpod2mdoc.1 -Lpod2mdoc.1 -u -p -r1.11 -r1.12
--- pod2mdoc.1
+++ pod2mdoc.1
@@ -101,6 +101,12 @@ Specifically, within each paragraph of t
 following occur:
 .Bl -bullet
 .It
+If any number of
+.Li #include <foo.h>
+lines are found at the start of a verbatim paragraph, they're rendered
+with
+.Sq \&In .
+.It
 An initial
 .Li B<>
 format code is rendered as
--
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