Check for equality of the URL's origin in replaceState/pushState

third_party/WebKit/Source/platform/weborigin/KURL.cpp

 /*
  * Copyright (C) 2004, 2007, 2008, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2008, 2009, 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 703 matching lines @@
     const String& aString = a.m_string;
     const String& bString = b.m_string;
     // FIXME: Abstraction this into a function in WTFString.h.
     for (int i = 0; i < aLength; ++i) {
         if (aString[i] != bString[i])
             return false;
     }
     return true;
 }
 
+bool equalIgnoringPathQueryAndFragment(const KURL& a, const KURL& b)
+{
+    int aLength = a.pathStart();
+    int bLength = b.pathStart();
+
+    if (aLength != bLength)
+        return false;
+
+    const String& aString = a.m_string;
+    const String& bString = b.m_string;
+    // FIXME: Abstraction this into a function in WTFString.h.

[brettw, 2015/12/08 05:41:32]

I would remove this FIXME, I don't think this should be in WTFString. If you
want to re-use code, make a StringView with the prefix and check equality.

[robwu, 2015/12/08 08:45:17]

Then it also applies to the function above. In either case, I try to be
consistent.

+    for (int i = 0; i < aLength; ++i) {
+        if (aString[i] != bString[i])
+            return false;
+    }
+    return true;
+}
+
 unsigned KURL::hostStart() const
 {
     return m_parsed.CountCharactersBefore(url::Parsed::HOST, false);
 }
 
 unsigned KURL::hostEnd() const
 {
     return m_parsed.CountCharactersBefore(url::Parsed::PORT, true);
 }
 
@@ skipping 169 matching lines @@
     m_string = AtomicString::fromUTF8(output.data(), output.length());
 }
 
 bool KURL::isSafeToSendToAnotherThread() const
 {
     return m_string.isSafeToSendToAnotherThread()
         && (!m_innerURL || m_innerURL->isSafeToSendToAnotherThread());
 }
 
 } // namespace blink