src/common/webviewfilehandler.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        webviewfilehandler.cpp
   3 // Purpose:     Custom handler for the file scheme to allow archive browsing
   4 // Author:      Steven Lamerton
   5 // Id:          $Id$
   6 // Copyright:   (c) 2011 Steven Lamerton
   7 // Licence:     wxWindows licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10 // For compilers that support precompilation, includes "wx.h".
  11 #include "wx/wxprec.h"
  12
  13 #if wxUSE_WEB
  14
  15 #if defined(__BORLANDC__)
  16     #pragma hdrstop
  17 #endif
  18
  19 #include "wx/webviewfilehandler.h"
  20 #include "wx/filesys.h"
  21
  22 //Taken from wx/filesys.cpp
  23 static wxString EscapeFileNameCharsInURL(const char *in)
  24 {
  25     wxString s;
  26
  27     for ( const unsigned char *p = (const unsigned char*)in; *p; ++p )
  28     {
  29         const unsigned char c = *p;
  30
  31         if ( c == '/' || c == '-' || c == '.' || c == '_' || c == '~' ||
  32              (c >= '0' && c <= '9') ||
  33              (c >= 'a' && c <= 'z') ||
  34              (c >= 'A' && c <= 'Z') )
  35         {
  36             s << c;
  37         }
  38         else
  39         {
  40             s << wxString::Format("%%%02x", c);
  41         }
  42     }
  43
  44     return s;
  45 }
  46
  47 wxWebFileHandler::wxWebFileHandler()
  48 {
  49     m_name = "file";
  50     m_fileSystem = new wxFileSystem();
  51 }
  52
  53 wxFSFile* wxWebFileHandler::GetFile(const wxString &uri)
  54 {
  55     //We iterate through the string to see if there is a protocol description
  56     int start = -1;
  57     for(int i = 0; i < uri.length(); i++)
  58     {
  59         if(uri[i] == ';' && uri.substr(i, 10) == ";protocol=")
  60         {
  61             start = i;
  62             break;
  63         }
  64     }
  65
  66     //We do not have a protocol string so we just pass the path withouth the
  67     if(start == -1)
  68     {
  69         size_t doubleslash = uri.find("//");
  70         //The path is incorrectly formed without // after the scheme
  71         if(doubleslash == wxString::npos)
  72             return NULL;
  73
  74         wxString fspath = "file:" +
  75                           EscapeFileNameCharsInURL(uri.substr(doubleslash + 2));
  76         return m_fileSystem->OpenFile(fspath);
  77     }
  78     //Otherwise we need to extract the protocol
  79     else
  80     {
  81         int end = uri.find('/', start);
  82         //For the path to be valid there must to a path after the protocol
  83         if(end == wxString::npos)
  84         {
  85             return NULL;
  86         }
  87         wxString mainpath = uri.substr(0, start);
  88         wxString archivepath = uri.substr(end);
  89         wxString protstring = uri.substr(start, end - start);
  90         wxString protocol = protstring.substr(10);
  91         //We can now construct the correct path
  92         size_t doubleslash = uri.find("//");
  93         //The path is incorrectly formed without // after the first protocol
  94         if(doubleslash == wxString::npos)
  95             return NULL;
  96
  97         wxString fspath = "file:" +
  98                           EscapeFileNameCharsInURL(mainpath.substr(doubleslash + 2))
  99                           + "#" + protocol +":" + archivepath;
 100         return m_fileSystem->OpenFile(fspath);
 101     }
 102 }
 103
 104 #endif // wxUSE_WEB