From fd3d01047c69b633d0dfc2f079791c3302971004 Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@kyllikki.org>
Date: Thu, 23 Oct 2014 22:18:16 +0100
Subject: fix parsing of whitespace in transform operators

The SVG spec for the transform attribute allows whitespace in places
that were causing the %n specifier in the ssanf to return 0 as the
match failed before it completed the parse.

http://www.w3.org/TR/SVG/coords.html#TransformAttribute
---
 src/svgtiny.c | 36 ++++++++++++++++++------------------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/src/svgtiny.c b/src/svgtiny.c
index 413697c..f02f3d6 100644
--- a/src/svgtiny.c
+++ b/src/svgtiny.c
@@ -1501,23 +1501,23 @@ void svgtiny_parse_transform(char *s, float *ma, float *mb,
 		a = d = 1;
 		b = c = 0;
 		e = f = 0;
-		if (sscanf(s, "matrix (%f %f %f %f %f %f) %n",
-					&a, &b, &c, &d, &e, &f, &n) == 6)
+		if ((sscanf(s, " matrix (%f %f %f %f %f %f ) %n",
+                            &a, &b, &c, &d, &e, &f, &n) == 6) && (n > 0))
 			;
-		else if (sscanf(s, "translate (%f %f) %n",
-					&e, &f, &n) == 2)
+		else if ((sscanf(s, " translate (%f %f ) %n",
+                                 &e, &f, &n) == 2) && (n > 0))
 			;
-		else if (sscanf(s, "translate (%f) %n",
-					&e, &n) == 1)
+		else if ((sscanf(s, " translate (%f ) %n",
+                                 &e, &n) == 1) && (n > 0))
 			;
-		else if (sscanf(s, "scale (%f %f) %n",
-					&a, &d, &n) == 2)
+		else if ((sscanf(s, " scale (%f %f ) %n",
+                                 &a, &d, &n) == 2) && (n > 0))
 			;
-		else if (sscanf(s, "scale (%f) %n",
-					&a, &n) == 1)
+		else if ((sscanf(s, " scale (%f ) %n",
+                                 &a, &n) == 1) && (n > 0))
 			d = a;
-		else if (sscanf(s, "rotate (%f %f %f) %n",
-					&angle, &x, &y, &n) == 3) {
+		else if ((sscanf(s, " rotate (%f %f %f ) %n",
+                                 &angle, &x, &y, &n) == 3) && (n > 0)) {
 			angle = angle / 180 * M_PI;
 			a = cos(angle);
 			b = sin(angle);
@@ -1525,19 +1525,19 @@ void svgtiny_parse_transform(char *s, float *ma, float *mb,
 			d = cos(angle);
 			e = -x * cos(angle) + y * sin(angle) + x;
 			f = -x * sin(angle) - y * cos(angle) + y;
-		} else if (sscanf(s, "rotate (%f) %n",
-					&angle, &n) == 1) {
+		} else if ((sscanf(s, " rotate (%f ) %n",
+                                   &angle, &n) == 1) && (n > 0)) {
 			angle = angle / 180 * M_PI;
 			a = cos(angle);
 			b = sin(angle);
 			c = -sin(angle);
 			d = cos(angle);
-		} else if (sscanf(s, "skewX (%f) %n",
-					&angle, &n) == 1) {
+		} else if ((sscanf(s, " skewX (%f ) %n",
+                                   &angle, &n) == 1) && (n > 0)) {
 			angle = angle / 180 * M_PI;
 			c = tan(angle);
-		} else if (sscanf(s, "skewY (%f) %n",
-					&angle, &n) == 1) {
+		} else if ((sscanf(s, " skewY (%f ) %n",
+                                   &angle, &n) == 1) && (n > 0)) {
 			angle = angle / 180 * M_PI;
 			b = tan(angle);
 		} else
-- 
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