+/////////////////////////////////////////////////////////////////////////////
+// Name: webviewfilehandler.cpp
+// Purpose: Custom handler for the file scheme 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/webviewfilehandler.h"
+#include "wx/filesys.h"
+#include "wx/tokenzr.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;
+}
+
+wxWebFileHandler::wxWebFileHandler()
+{
+ m_name = "test";
+ m_fileSystem = new wxFileSystem();
+}
+
+wxFSFile* wxWebFileHandler::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 wxWebFileHandler::CombineURIs(const wxString &baseuri,
+ const wxString &newuri)
+{
+ //If there is a colon in the path then we just return it
+ if(newuri.find(':') != wxString::npos)
+ {
+ return newuri;
+ }
+ //We have an absolute path and no query string
+ else if(newuri.substr(0, 1) == "/" && baseuri.find('?') == wxString::npos)
+ {
+ //By finding the next / after file:// we get to the end of the
+ //(optional) hostname
+ size_t pos = baseuri.find('/', 7);
+ //So we return up to the end of the hostname, plus the newuri
+ return baseuri.substr(0, pos) + newuri;
+ }
+ //We have an absolute path and a query string
+ else if(newuri.substr(0, 1) == "/" && baseuri.find('?') != wxString::npos)
+ {
+ wxString query = baseuri.substr(baseuri.find('?') + 1);
+ wxString newquery;
+ wxStringTokenizer tokenizer(query, ";");
+ while(tokenizer.HasMoreTokens())
+ {
+ wxString token = tokenizer.GetNextToken();
+ if(token.substr(0, 5) == "path=")
+ {
+ //As the path is absolue simply replace the old path with the
+ //new one
+ newquery = newquery + "path=" + newuri;
+ }
+ else
+ {
+ newquery += token;
+ }
+ //We need to add the separators back
+ if(tokenizer.HasMoreTokens())
+ newquery += ';';
+ }
+ return baseuri.substr(0, baseuri.find('?')) + "?" + newquery;
+ }
+ //We have a relative path and no query string
+ else if(baseuri.find('?') == wxString::npos)
+ {
+ //By finding the next / after file:// we get to the end of the
+ //(optional) hostname
+ size_t pos = baseuri.find('/', 7);
+ wxString path = baseuri.substr(pos);
+ //Then we remove the last filename
+ path = path.BeforeLast('/') + '/';
+ //Ensure that we have the leading / so we can normalise properly
+ if(path.substr(0, 1) != "/")
+ path = "/" + path;
+
+ //If we have a colon in the path (i.e. we are on windows) we need to
+ //handle it specially
+ if(path.find(':') != wxString::npos)
+ {
+ wxFileName fn(path.AfterFirst('/').AfterFirst('/') + newuri);
+ fn.Normalize(wxPATH_NORM_DOTS, "", wxPATH_UNIX);
+ return baseuri.substr(0, pos) + '/' +
+ path.AfterFirst('/').BeforeFirst('/') + '/' +
+ fn.GetFullPath(wxPATH_UNIX);
+ }
+ else
+ {
+ //We can now use wxFileName to perform the normalisation
+ wxFileName fn(path + newuri);
+ fn.Normalize(wxPATH_NORM_DOTS, "", wxPATH_UNIX);
+ return baseuri.substr(0, pos) + fn.GetFullPath(wxPATH_UNIX);
+ }
+ }
+ //We have a relative path and a query string
+ else
+ {
+ wxString query = baseuri.substr(baseuri.find('?') + 1);
+ wxString newquery;
+ wxStringTokenizer tokenizer(query, ";");
+ while(tokenizer.HasMoreTokens())
+ {
+ wxString token = tokenizer.GetNextToken();
+ if(token.substr(0, 5) == "path=")
+ {
+ wxString path = token.substr(6);
+ //Then we remove the last filename
+ path = path.BeforeLast('/') + '/';
+ //Ensure that we have the leading / so we can normalise properly
+ //if(path.substr(0, 1) != "/")
+ // path = "/" + path;
+
+ //We can now use wxFileName to perform the normalisation
+ wxFileName fn(path + newuri);
+ fn.Normalize(wxPATH_NORM_DOTS, "", wxPATH_UNIX);
+ newquery = newquery + "path=" + fn.GetFullPath(wxPATH_UNIX);
+ }
+ else
+ {
+ newquery += token;
+ }
+ //We need to add the separators back
+ if(tokenizer.HasMoreTokens())
+ newquery += ';';
+ }
+ return baseuri.substr(0, baseuri.find('?')) + "?" + newquery;
+ }
+}
+#endif // wxUSE_WEB
projects / wxWidgets.git / commitdiff
