GetStringAttribute
const char *href = GetStringAttribute(attributes, "xlink:href");
fGradient->name = strdup(GetStringAttribute(attributes, "id"));
fGradient->name = strdup(GetStringAttribute(attributes, "id"));
const char *attr = GetStringAttribute(attributes, name);
const char *attr = GetStringAttribute(attributes, name);
const char *stroke = GetStringAttribute(attributes, "stroke");
const char *fill = GetStringAttribute(attributes, "fill");
const char *stroke_linecap = GetStringAttribute(attributes, "stroke-linecap");
const char *stroke_linejoin = GetStringAttribute(attributes, "stroke-linejoin");
const char *GetStringAttribute(const XML_Char **attributes, const char *name);