1 files changed, 25 insertions, 5 deletions

diff --git a/WebCore/platform/KURL.h b/WebCore/platform/KURL.h
index 0809f7e..647330d 100644
--- a/WebCore/platform/KURL.h
+++ b/WebCore/platform/KURL.h
@@ -55,15 +55,18 @@ namespace WebCore {
 class TextEncoding;
 struct KURLHash;
 
+enum ParsedURLStringTag { ParsedURLString };
+
 class KURL {
 public:
     // Generates a URL which contains a null string.
     KURL() { invalidate(); }
 
-    // The argument is an absolute URL string. The string is assumed to be
-    // an already encoded (ASCII-only) valid absolute URL.
-    explicit KURL(const char*);
-    explicit KURL(const String&);
+    // The argument is an absolute URL string. The string is assumed to be output of KURL::string() called on a valid
+    // KURL object, or indiscernible from such.
+    // It is usually best to avoid repeatedly parsing a string, unless memory saving outweigh the possible slow-downs.
+    KURL(ParsedURLStringTag, const char*);
+    KURL(ParsedURLStringTag, const String&);
 
     // Resolves the relative URL with the given base URL. If provided, the
     // TextEncoding is used to encode non-ASCII characers. The base URL can be
@@ -75,6 +78,7 @@ public:
     KURL(const KURL& base, const String& relative);
     KURL(const KURL& base, const String& relative, const TextEncoding&);
 
+
 #if USE(GOOGLEURL)
     // For conversions for other structures that have already parsed and
     // canonicalized the URL. The input must be exactly what KURL would have
@@ -101,6 +105,12 @@ public:
     // non-hierarchical (like "javascript:") URLs will have no path.
     bool hasPath() const;
 
+    // Returns true if you can set the host and port for the URL.
+    // Non-hierarchical URLs don't have a host and port.
+    bool canSetHostOrPort() const { return isHierarchical(); }
+
+    bool canSetPathname() const { return isHierarchical(); }
+    
 #if USE(GOOGLEURL)
     const String& string() const { return m_url.string(); }
 #else
@@ -110,6 +120,7 @@ public:
     String protocol() const;
     String host() const;
     unsigned short port() const;
+    bool hasPort() const;
     String user() const;
     String pass() const;
     String path() const;
@@ -132,7 +143,7 @@ public:
     void setProtocol(const String&);
     void setHost(const String&);
 
-    // Setting the port to 0 will clear any port from the URL.
+    void removePort();
     void setPort(unsigned short);
 
     // Input is like "foo.com" or "foo.com:8000".
@@ -251,6 +262,10 @@ const KURL& blankURL();
 
 bool protocolIs(const String& url, const char* protocol);
 bool protocolIsJavaScript(const String& url);
+bool isValidProtocol(const String& protocol);
+
+bool isDefaultPortForProtocol(unsigned short port, const String& protocol);
+bool portAllowed(const KURL&); // Blacklist ports that should never be used for Web resources.
 
 String mimeTypeFromDataURL(const String& url);
 
@@ -314,6 +329,11 @@ inline bool KURL::isValid() const
     return m_isValid;
 }
 
+inline bool KURL::hasPort() const
+{
+    return m_hostEnd < m_portEnd;
+}
+
 inline bool KURL::protocolInHTTPFamily() const
 {
     return m_protocolInHTTPFamily;