interface/url.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        url.h
   3 // Purpose:     interface of wxURL
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     Error types returned from wxURL::GetError().
  11 */
  12 typedef enum {
  13     wxURL_NOERR = 0,    ///< No error.
  14     wxURL_SNTXERR,      ///< Syntax error in the URL string.
  15     wxURL_NOPROTO,      ///< Found no protocol which can get this URL.
  16     wxURL_NOHOST,       ///< A host name is required for this protocol.
  17     wxURL_NOPATH,       ///< A path is required for this protocol.
  18     wxURL_CONNERR,      ///< Connection error.
  19     wxURL_PROTOERR      ///< An error occurred during negotiation.
  20 } wxURLError;
  21
  22 /**
  23     @class wxURL
  24     @wxheader{url.h}
  25
  26     wxURL is a specialization of wxURI for parsing URLs. Please look at wxURI
  27     documentation for more info about the functions you can use to retrieve the
  28     various parts of the URL (scheme, server, port, etc).
  29
  30     Supports standard assignment operators, copy constructors, and comparison
  31     operators.
  32
  33     @library{wxnet}
  34     @category{net}
  35
  36     @see wxSocketBase, wxProtocol
  37 */
  38 class wxURL : public wxURI
  39 {
  40 public:
  41     /**
  42         Constructs a URL object from the string. The URL must be valid
  43         according to RFC 1738. In particular, file URLs must be of the format
  44         @c "file://hostname/path/to/file", otherwise GetError() will return a
  45         value different from ::wxURL_NOERR.
  46
  47         It is valid to leave out the hostname but slashes must remain in place,
  48         in other words, a file URL without a hostname must contain three
  49         consecutive slashes (e.g. @c "file:///somepath/myfile").
  50
  51         @param url
  52             Url string to parse.
  53     */
  54     wxURL(const wxString& url = wxEmptyString);
  55
  56     /**
  57         Destroys the URL object.
  58     */
  59     ~wxURL();
  60
  61     /**
  62         Returns the last error. This error refers to the URL parsing or to the
  63         protocol. It can be one of ::wxURLError.
  64     */
  65     wxURLError GetError() const;
  66
  67     /**
  68         Creates a new input stream on the specified URL. You can use all but
  69         seek functionality of wxStream. Seek isn't available on all streams.
  70         For example, HTTP or FTP streams don't deal with it.
  71
  72         Note that this method is somewhat deprecated, all future wxWidgets
  73         applications should use wxFileSystem instead.
  74
  75         Example:
  76
  77         @code
  78         wxURL url("http://a.host/a.dir/a.file");
  79         if (url.GetError() == wxURL_NOERR)
  80         {
  81             wxInputStream *in_stream;
  82
  83             in_stream = url.GetInputStream();
  84             // Then, you can use all IO calls of in_stream (See wxStream)
  85         }
  86         @endcode
  87
  88         @return Returns the initialized stream. You will have to delete it
  89                  yourself.
  90
  91         @see wxInputStream
  92     */
  93     wxInputStream* GetInputStream();
  94
  95     /**
  96         Returns a reference to the protocol which will be used to get the URL.
  97     */
  98     wxProtocol GetProtocol();
  99
 100     /**
 101         Returns @true if this object is correctly initialized, i.e. if
 102         GetError() returns ::wxURL_NOERR.
 103     */
 104     bool IsOk() const;
 105
 106     /**
 107         Sets the default proxy server to use to get the URL. The string
 108         specifies the proxy like this: @c "<hostname>:<port number>".
 109
 110         @param url_proxy
 111             Specifies the proxy to use.
 112
 113         @see SetProxy()
 114     */
 115     static void SetDefaultProxy(const wxString& url_proxy);
 116
 117     /**
 118         Sets the proxy to use for this URL.
 119
 120         @see SetDefaultProxy()
 121     */
 122     void SetProxy(const wxString& url_proxy);
 123
 124     /**
 125         Initializes this object with the given URL and returns ::wxURL_NOERR if
 126         it's valid (see GetError() for more info).
 127     */
 128     wxURLError SetURL(const wxString& url);
 129 };
 130