Delay opening a word state until a character is ready to be output.

This paves the way for closing/reopening scope in the event that a font
changes.

1 files changed, 42 insertions, 21 deletions

diff --git a/term_ps.c b/term_ps.c
index 8f32ae11..59da7d34 100644
--- a/term_ps.c
+++ b/term_ps.c
@@ -1,4 +1,4 @@
-/*	$Id: term_ps.c,v 1.7 2010/06/11 07:23:04 kristaps Exp $ */
+/*	$Id: term_ps.c,v 1.8 2010/06/11 15:26:39 kristaps Exp $ */
 /*
  * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
  *
@@ -58,6 +58,7 @@ static	void		  ps_begin(struct termp *);
 static	void		  ps_end(struct termp *);
 static	void		  ps_advance(struct termp *, size_t);
 static	void		  ps_endline(struct termp *);
+static	void		  ps_pletter(struct termp *, char);
 static	void		  ps_printf(struct termp *, const char *, ...);
 static	void		  ps_putchar(struct termp *, char);
 
@@ -161,6 +162,8 @@ ps_end(struct termp *p)
 	 * well as just one.
 	 */
 
+	assert(0 == p->engine.ps.psstate);
+	assert('\0' == p->engine.ps.last);
 	assert(p->engine.ps.psmarg && p->engine.ps.psmarg[0]);
 	printf("%s", p->engine.ps.psmarg);
 	printf("showpage\n");
@@ -226,9 +229,8 @@ ps_begin(struct termp *p)
 
 
 static void
-ps_letter(struct termp *p, char c)
+ps_pletter(struct termp *p, char c)
 {
-	char		cc;
 	
 	if ( ! (PS_INLINE & p->engine.ps.psstate)) {
 		/*
@@ -241,24 +243,6 @@ ps_letter(struct termp *p, char c)
 		p->engine.ps.psstate |= PS_INLINE;
 	}
 
-	if ('\0' == p->engine.ps.last) {
-		assert(8 != c);
-		p->engine.ps.last = c;
-		return;
-	} else if (8 == p->engine.ps.last) {
-		assert(8 != c);
-		p->engine.ps.last = c;
-		return;
-	} else if (8 == c) {
-		assert(8 != p->engine.ps.last);
-		p->engine.ps.last = c;
-		return;
-	} else {
-		cc = p->engine.ps.last;
-		p->engine.ps.last = c;
-		c = cc;
-	}
-
 	/*
 	 * We need to escape these characters as per the PostScript
 	 * specification.  We would also escape non-graphable characters
@@ -285,10 +269,42 @@ ps_letter(struct termp *p, char c)
 
 
 static void
+ps_letter(struct termp *p, char c)
+{
+	char		cc;
+	
+	if ('\0' == p->engine.ps.last) {
+		assert(8 != c);
+		p->engine.ps.last = c;
+		return;
+	} else if (8 == p->engine.ps.last) {
+		assert(8 != c);
+		p->engine.ps.last = c;
+		return;
+	} else if (8 == c) {
+		assert(8 != p->engine.ps.last);
+		p->engine.ps.last = c;
+		return;
+	} else {
+		cc = p->engine.ps.last;
+		p->engine.ps.last = c;
+		c = cc;
+	}
+
+	return(ps_pletter(p, c));
+}
+
+
+static void
 ps_advance(struct termp *p, size_t len)
 {
 	size_t		 i;
 
+	if ('\0' != p->engine.ps.last) {
+		ps_pletter(p, p->engine.ps.last);
+		p->engine.ps.last = '\0';
+	}
+
 	if (PS_INLINE & p->engine.ps.psstate) {
 		assert(8 != p->engine.ps.last);
 		if (p->engine.ps.last)
@@ -308,6 +324,11 @@ static void
 ps_endline(struct termp *p)
 {
 
+	if ('\0' != p->engine.ps.last) {
+		ps_pletter(p, p->engine.ps.last);
+		p->engine.ps.last = '\0';
+	}
+
 	if (PS_INLINE & p->engine.ps.psstate) {
 		assert(8 != p->engine.ps.last);
 		if (p->engine.ps.last)