Rename wxWebFileHandler to wxWebViewArchiveHandler, wxWebHandler to wxWebViewHandler. Update the documentation and the sample. Add a constructor taking a wxString to specify the scheme in wxWebViewHandler.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/SOC2011_WEBVIEW@68689 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/webviewarchivehandler.cpp

@@ -0,0 +1,113 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        webviewfilehandler.cpp
+// Purpose:     Custom webview handler to allow archive browsing
+// Author:      Steven Lamerton
+// Id:          $Id$
+// Copyright:   (c) 2011 Steven Lamerton
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_WEB
+
+#if defined(__BORLANDC__)
+    #pragma hdrstop
+#endif
+
+#include "wx/webviewarchivehandler.h"
+#include "wx/filesys.h"
+
+//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;
+}
+
+wxWebViewArchiveHandler::wxWebViewArchiveHandler(const wxString& scheme) :
+                         wxWebViewHandler(scheme)
+{
+    m_fileSystem = new wxFileSystem();
+}
+
+wxFSFile* wxWebViewArchiveHandler::GetFile(const wxString &uri)
+{
+    //If there is a fragment at the end of the path then we need to strip it
+    //off as not all backends do this for us
+    wxString path = uri;
+    size_t hashloc = uri.find('#');
+    if(hashloc != wxString::npos)
+    {
+        path = uri.substr(0, hashloc);
+    }
+
+    //We iterate through the string to see if there is a protocol description
+    size_t start = wxString::npos;
+    for(size_t i = 0; i < path.length(); i++)
+    {
+        if(path[i] == ';' && path.substr(i, 10) == ";protocol=")
+        {
+            start = i;
+            break;
+        }
+    }
+
+    //We do not have a protocol string so we just pass the path withouth the 
+    if(start == wxString::npos)
+    {
+        size_t doubleslash = path.find("//");
+        //The path is incorrectly formed without // after the scheme
+        if(doubleslash == wxString::npos)
+            return NULL;
+
+        wxString fspath = "file:" + 
+                          EscapeFileNameCharsInURL(path.substr(doubleslash + 2));
+        return m_fileSystem->OpenFile(fspath);
+    }
+    //Otherwise we need to extract the protocol
+    else
+    {
+        size_t end = path.find('/', start);
+        //For the path to be valid there must to a path after the protocol
+        if(end == wxString::npos)
+        {
+            return NULL;
+        }
+        wxString mainpath = path.substr(0, start);
+        wxString archivepath = path.substr(end);
+        wxString protstring = path.substr(start, end - start);
+        wxString protocol = protstring.substr(10);
+        //We can now construct the correct path
+        size_t doubleslash = path.find("//");
+        //The path is incorrectly formed without // after the first protocol
+        if(doubleslash == wxString::npos)
+            return NULL;
+
+        wxString fspath = "file:" + 
+                          EscapeFileNameCharsInURL(mainpath.substr(doubleslash + 2))
+                          + "#" + protocol +":" + archivepath;
+        return m_fileSystem->OpenFile(fspath);
+    }
+}
+
+#endif // wxUSE_WEB