Move the wxWebFileProtocolHandler from the IE backend to the common source, add the RegisterProtocol method to all classes (as a stub in GTK and OSX). Register the file protocol handler in the sample for testing purposes.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/SOC2011_WEBVIEW@68446 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/webview.cpp

@@ -21,6 +21,8 @@
 #include "wx/osx/webview_webkit.h"
 #include "wx/gtk/webview_webkit.h"
 #include "wx/msw/webview_ie.h"
+#include "wx/filesys.h"
+#include "wx/tokenzr.h"
 
 // DLL options compatibility check:
 #include "wx/app.h"
@@ -37,6 +39,96 @@ wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_LOADED, wxWebNavigationEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_ERROR, wxWebNavigationEvent );
 wxDEFINE_EVENT( wxEVT_COMMAND_WEB_VIEW_NEWWINDOW, wxWebNavigationEvent );
 
+//Taken from wx/filesys.cpp
+static wxString EscapeFileNameCharsInURL(const char *in)
+{
+    wxString s;
+
+    for ( const unsigned char *p = (const unsigned char*)in; *p; ++p )
+    {
+        const unsigned char c = *p;
+
+        if ( c == '/' || c == '-' || c == '.' || c == '_' || c == '~' ||
+             (c >= '0' && c <= '9') ||
+             (c >= 'a' && c <= 'z') ||
+             (c >= 'A' && c <= 'Z') )
+        {
+            s << c;
+        }
+        else
+        {
+            s << wxString::Format("%%%02x", c);
+        }
+    }
+
+    return s;
+}
+
+wxWebFileProtocolHandler::wxWebFileProtocolHandler()
+{
+    m_protocol = "test";
+    m_fileSystem = new wxFileSystem();
+}
+
+wxFSFile* wxWebFileProtocolHandler::GetFile(const wxString &uri)
+{
+    size_t pos = uri.find('?');
+    //There is no query string so we can load the file directly
+    if(pos == wxString::npos)
+    {
+        size_t doubleslash = uri.find("//");
+        //The path is incorrectly formed without // after the first protocol
+        if(doubleslash == wxString::npos)
+            return NULL;
+
+        wxString fspath = "file:" + 
+                          EscapeFileNameCharsInURL(uri.substr(doubleslash + 2));
+        return m_fileSystem->OpenFile(fspath);
+    }
+    //Otherwise we have a query string of some kind that we need to extract
+    else{
+        //First we extract the query string, this should have two parameters, 
+        //protocol=type and path=path
+        wxString query = uri.substr(pos + 1), protocol, path;
+        //We also trim the query off the end as we handle it alone
+        wxString lefturi = uri.substr(0, pos);
+        wxStringTokenizer tokenizer(query, ";");
+        while(tokenizer.HasMoreTokens() && (protocol == "" || path == ""))
+        {
+            wxString token = tokenizer.GetNextToken();
+            if(token.substr(0, 9) == "protocol=")
+            {
+                protocol = token.substr(9);
+            }
+            else if(token.substr(0, 5) == "path=")
+            {
+                path = token.substr(5);
+            }
+        }
+        if(protocol == "" || path == "")
+            return NULL;
+
+        //We now have the path and the protocol and so can format a correct uri
+        //to pass to wxFileSystem to get a wxFSFile
+        size_t doubleslash = uri.find("//");
+        //The path is incorrectly formed without // after the first protocol
+        if(doubleslash == wxString::npos)
+            return NULL;
+
+        wxString fspath = "file:" + 
+                          EscapeFileNameCharsInURL(lefturi.substr(doubleslash + 2))
+                          + "#" + protocol +":" + path;
+        return m_fileSystem->OpenFile(fspath);
+    }
+}
+
+wxString wxWebFileProtocolHandler::CombineURIs(const wxString &baseuri, 
+                                               const wxString &newuri)
+{
+    //Still need to be implemented correctly
+    return newuri;
+}
+
 // static
 wxWebView* wxWebView::New(wxWebViewBackend backend)
 {