Fixed handling of arcs in non conforming svg files.

This resolves issue TDE/tde#46.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 35d3a3c50440b34f0fcc6ed56c630f74de41c32a)

1 files changed, 48 insertions, 30 deletions

diff --git a/tdecore/svgicons/ksvgiconpainter.cpp b/tdecore/svgicons/ksvgiconpainter.cpp
index 122c8432d..e0e2a2ce9 100644
--- a/tdecore/svgicons/ksvgiconpainter.cpp
+++ b/tdecore/svgicons/ksvgiconpainter.cpp
@@ -1743,17 +1743,34 @@ void KSVGIconPainter::drawPath(const TQString &data, bool filled)
 	double curx = 0.0, cury = 0.0, contrlx = 0.0, contrly = 0.0, xc, yc;
 	unsigned int lastCommand = 0;
 
-	TQString _d = value.replace(",", " ");
-	_d = _d.simplifyWhiteSpace();
-	const char *ptr = _d.latin1();
-	const char *end = _d.latin1() + _d.length() + 1;
+	TQCString _d = value.replace(",", " ").simplifyWhiteSpace().latin1();
+	const char *ptr = _d.data();
+	const char *end = _d.data() + _d.length();
 
 	double tox, toy, x1, y1, x2, y2, rx, ry, angle;
 	bool largeArc, sweep;
-	char command = *(ptr++);
+	char command = *ptr;
 
 	while(ptr < end)
 	{
+
+		if(*ptr == '+' || *ptr == '-' || *ptr == '.' || (*ptr >= '0' && *ptr <= '9'))
+		{
+			// there are still coords in this command
+			if(command == 'M')
+			{
+				command = 'L';
+			}
+			else if(command == 'm')
+			{
+				command = 'l';
+			}
+		}
+		else
+		{
+			command = *(ptr++);
+		}
+
 		if(*ptr == ' ')
 			ptr++;
 
@@ -2179,10 +2196,19 @@ void KSVGIconPainter::drawPath(const TQString &data, bool filled)
 				ptr = getCoord(ptr, rx);
 				ptr = getCoord(ptr, ry);
 				ptr = getCoord(ptr, angle);
-				ptr = getCoord(ptr, tox);
-				largeArc = tox == 1;
-				ptr = getCoord(ptr, tox);
-				sweep = tox == 1;
+				// 'largeArc' and 'sweep' are single digit flags. Some non conforming svg files do not
+				// separate those fields with separators, so we can't use getCoord() here.
+				// See TDE/tde issue #46 on TGW
+				largeArc = ((*ptr++) != '0');
+				while (*ptr == ' ')
+				{
+					ptr++;
+				}
+				sweep = ((*ptr++) != '0');
+				while (*ptr == ' ')
+				{
+					ptr++;
+				}
 				ptr = getCoord(ptr, tox);
 				ptr = getCoord(ptr, toy);
 
@@ -2198,10 +2224,19 @@ void KSVGIconPainter::drawPath(const TQString &data, bool filled)
 				ptr = getCoord(ptr, rx);
 				ptr = getCoord(ptr, ry);
 				ptr = getCoord(ptr, angle);
-				ptr = getCoord(ptr, tox);
-				largeArc = tox == 1;
-				ptr = getCoord(ptr, tox);
-				sweep = tox == 1;
+				// 'largeArc' and 'sweep' are single digit flags. Some non conforming svg files do not
+				// separate those fields with separators, so we can't use getCoord() here.
+				// See TDE/tde issue #46 on TGW
+				largeArc = ((*ptr++) != '0');
+				while (*ptr == ' ')
+				{
+					ptr++;
+				}
+				sweep = ((*ptr++) != '0');
+				while (*ptr == ' ')
+				{
+					ptr++;
+				}
 				ptr = getCoord(ptr, tox);
 				ptr = getCoord(ptr, toy);
 
@@ -2215,23 +2250,6 @@ void KSVGIconPainter::drawPath(const TQString &data, bool filled)
 				break;
 		}
 
-		if(*ptr == '+' || *ptr == '-' || *ptr == '.' || (*ptr >= '0' && *ptr <= '9'))
-		{
-			// there are still coords in this command
-			if(command == 'M')
-			{
-				command = 'L';
-			}
-			else if(command == 'm')
-			{
-				command = 'l';
-			}
-		}
-		else
-		{
-			command = *(ptr++);
-		}
-
 		// Detect reflection points
 		if(lastCommand != 'C' && lastCommand != 'c' &&
 			lastCommand != 'S' && lastCommand != 's' &&