Support : Fixes for Relative URL Handling

When URLs combine a base URL with a relative part, the relative part's
path component was being pre-processed.  This removed any ".." from the
path and in some cases in the unit test cases, the ".." should have been
retained and then only later applied to the base URL.  This changes
fixes this so that the relative part is not pre-processed and is applied
with it's path in a raw state.

Completes Fixes for #14377
Change-Id: I9cebb8599889494e11f40a3b54c87ebca3ed1a21
Reviewed-on: https://review.haiku-os.org/529
Reviewed-by: Jérôme Duval <[email protected]>

headers/os/support/Url.h

@@ -100,7 +100,8 @@ public:
 private:
 			void				_ResetFields();
 			bool				_ContainsDelimiter(const BString& url);
-			status_t			_ExplodeUrlString(const BString& urlString);
+			status_t			_ExplodeUrlString(const BString& urlString,
+									uint32 flags);
 			BString				_MergePath(const BString& relative) const;
 			void				_SetPathUnsafe(const BString& path);
 
@@ -122,6 +123,8 @@ private:
 	static	bool				_IsHostChar(char c);
 	static	bool				_IsPortChar(char c);
 
+	static	void				_RemoveLastPathComponent(BString& path);
+
 			BString				_UrlMimeType() const;
 
 private: