[SVG2] Allow leading and trailing whitespace in svg attributes

Source/core/svg/SVGAngle.cpp

Index: Source/core/svg/SVGAngle.cpp
diff --git a/Source/core/svg/SVGAngle.cpp b/Source/core/svg/SVGAngle.cpp
index 7e91ef5049b310d911a361c838d39a01af558d6f..7768b9385ceb1bfb713a3631cf552d7a9b04e172 100644
--- a/Source/core/svg/SVGAngle.cpp
+++ b/Source/core/svg/SVGAngle.cpp
@@ -152,35 +152,27 @@ static SVGAngle::SVGAngleType stringToAngleType(const CharType*& ptr, const Char
     if (ptr == end)
         return SVGAngle::SVG_ANGLETYPE_UNSPECIFIED;
 
-    const CharType firstChar = *ptr;
-
-    // If the unit contains only one character, the angle type is unknown.
-    ++ptr;
-    if (ptr == end)
-        return SVGAngle::SVG_ANGLETYPE_UNKNOWN;
-
-    const CharType secondChar = *ptr;
-
-    // If the unit contains only two characters, the angle type is unknown.
-    ++ptr;
-    if (ptr == end)
-        return SVGAngle::SVG_ANGLETYPE_UNKNOWN;
-
-    const CharType thirdChar = *ptr;
-    if (firstChar == 'd' && secondChar == 'e' && thirdChar == 'g')
-        return SVGAngle::SVG_ANGLETYPE_DEG;
-    if (firstChar == 'r' && secondChar == 'a' && thirdChar == 'd')
-        return SVGAngle::SVG_ANGLETYPE_RAD;
-
-    // If the unit contains three characters, but is not deg or rad, then it's unknown.
-    ++ptr;
-    if (ptr == end)
-        return SVGAngle::SVG_ANGLETYPE_UNKNOWN;
-
-    const CharType fourthChar = *ptr;
+    SVGAngle::SVGAngleType type = SVGAngle::SVG_ANGLETYPE_UNKNOWN;
+    const CharType firstChar = *ptr++;
+
+    if (isHTMLSpace<CharType>(firstChar)) {
+        type = SVGAngle::SVG_ANGLETYPE_UNSPECIFIED;
+    } else if (end - ptr >= 2) {
+        const CharType secondChar = *ptr++;
+        const CharType thirdChar = *ptr++;
+        if (firstChar == 'd' && secondChar == 'e' && thirdChar == 'g') {
+            type = SVGAngle::SVG_ANGLETYPE_DEG;
+        } else if (firstChar == 'r' && secondChar == 'a' && thirdChar == 'd') {
+            type = SVGAngle::SVG_ANGLETYPE_RAD;
+        } else if (ptr != end) {
+            const CharType fourthChar = *ptr++;
+            if (firstChar == 'g' && secondChar == 'r' && thirdChar == 'a' && fourthChar == 'd')
+                type = SVGAngle::SVG_ANGLETYPE_GRAD;
+        }
+    }
 
-    if (firstChar == 'g' && secondChar == 'r' && thirdChar == 'a' && fourthChar == 'd')
-        return SVGAngle::SVG_ANGLETYPE_GRAD;
+    if (!skipOptionalSVGSpaces(ptr, end))
+        return type;
 
     return SVGAngle::SVG_ANGLETYPE_UNKNOWN;
 }
@@ -215,7 +207,7 @@ static bool parseValue(const String& value, float& valueInSpecifiedUnits, SVGAng
     const CharType* ptr = value.getCharacters<CharType>();
     const CharType* end = ptr + value.length();
 
-    if (!parseNumber(ptr, end, valueInSpecifiedUnits, false))
+    if (!parseNumber(ptr, end, valueInSpecifiedUnits, AllowLeadingWhitespace))
         return false;
 
     unitType = stringToAngleType(ptr, end);