// Purpose: HTTP and FTP file system
// Author: Vaclav Slavik
// Copyright: (c) 1999 Vaclav Slavik
-// Licence: wxWindows Licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*
+#include "wx/wxprec.h"
-REMARKS :
-
-This FS creates local cache (in /tmp directory). The cache is freed
-on program exit.
-
-Size of cache is limited to cca 1000 items (due to GetTempFileName
-limitation)
-
-
-*/
-
-#ifdef __GNUG__
-#pragma implementation
-#endif
-
-#include <wx/wxprec.h>
-
-#ifdef __BORDLANDC__
+#ifdef __BORLANDC__
#pragma hdrstop
#endif
#define wxUSE_FS_INET 0
#endif
-#if wxUSE_FS_INET
+#if wxUSE_FILESYSTEM && wxUSE_FS_INET
#ifndef WXPRECOMP
-#include <wx/wx.h>
#endif
#include "wx/wfstream.h"
#include "wx/url.h"
#include "wx/filesys.h"
#include "wx/fs_inet.h"
+#include "wx/module.h"
-class wxInetCacheNode : public wxObject
+// ----------------------------------------------------------------------------
+// Helper classes
+// ----------------------------------------------------------------------------
+
+// This stream deletes the file when destroyed
+class wxTemporaryFileInputStream : public wxFileInputStream
{
- private:
- wxString m_Temp;
- wxString m_Mime;
+public:
+ wxTemporaryFileInputStream(const wxString& filename) :
+ wxFileInputStream(filename), m_filename(filename) {}
- public:
- wxInetCacheNode(const wxString& l, const wxString& m) : wxObject() {m_Temp = l; m_Mime = m;}
- const wxString& GetTemp() const {return m_Temp;}
- const wxString& GetMime() const {return m_Mime;}
+ ~wxTemporaryFileInputStream()
+ {
+ // NB: copied from wxFileInputStream dtor, we need to do it before
+ // wxRemoveFile
+ if (m_file_destroy)
+ {
+ delete m_file;
+ m_file_destroy = false;
+ }
+ wxRemoveFile(m_filename);
+ }
+
+protected:
+ wxString m_filename;
};
+// ----------------------------------------------------------------------------
+// wxInternetFSHandler
+// ----------------------------------------------------------------------------
+static wxString StripProtocolAnchor(const wxString& location)
+{
+ wxString myloc(location.BeforeLast(wxT('#')));
+ if (myloc.empty()) myloc = location.AfterFirst(wxT(':'));
+ else myloc = myloc.AfterFirst(wxT(':'));
+ // fix malformed url:
+ if (!myloc.Left(2).IsSameAs(wxT("//")))
+ {
+ if (myloc.GetChar(0) != wxT('/')) myloc = wxT("//") + myloc;
+ else myloc = wxT("/") + myloc;
+ }
+ if (myloc.Mid(2).Find(wxT('/')) == wxNOT_FOUND) myloc << wxT('/');
-//--------------------------------------------------------------------------------
-// wxInternetFSHandler
-//--------------------------------------------------------------------------------
+ return myloc;
+}
bool wxInternetFSHandler::CanOpen(const wxString& location)
{
+#if wxUSE_URL
wxString p = GetProtocol(location);
- return (p == _T("http")) || (p == _T("ftp"));
+ if ((p == wxT("http")) || (p == wxT("ftp")))
+ {
+ wxURL url(p + wxT(":") + StripProtocolAnchor(location));
+ return (url.GetError() == wxURL_NOERR);
+ }
+#endif
+ return false;
}
-wxFSFile* wxInternetFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
+wxFSFile* wxInternetFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs),
+ const wxString& location)
{
- wxString right = GetProtocol(location) + _T(":") + GetRightLocation(location);
- wxInputStream *s;
- wxString content;
- wxInetCacheNode *info;
-
- info = (wxInetCacheNode*) m_Cache.Get(right);
-
- // Add item into cache:
- if (info != NULL)
+#if !wxUSE_URL
+ return NULL;
+#else
+ wxString right =
+ GetProtocol(location) + wxT(":") + StripProtocolAnchor(location);
+
+ wxURL url(right);
+ if (url.GetError() == wxURL_NOERR)
{
- wxURL url(right);
- s = url.GetInputStream();
- content = url.GetProtocol().GetContentType();
+ wxInputStream *s = url.GetInputStream();
+ wxString content = url.GetProtocol().GetContentType();
if (content == wxEmptyString) content = GetMimeTypeFromExt(location);
- if (s)
- {
- wxChar buf[256];
-
- wxGetTempFileName( _T("wxhtml"), buf);
- info = new wxInetCacheNode(buf, content);
- m_Cache.Put(right, info);
-
- { // ok, now copy it:
- wxFileOutputStream sout(buf);
- s -> Read(sout); // copy the stream
+ if (s)
+ {
+ wxString tmpfile =
+ wxFileName::CreateTempFileName(wxT("wxhtml"));
+
+ { // now copy streams content to temporary file:
+ wxFileOutputStream sout(tmpfile);
+ s->Read(sout);
}
delete s;
+
+ return new wxFSFile(new wxTemporaryFileInputStream(tmpfile),
+ right,
+ content,
+ GetAnchor(location)
+#if wxUSE_DATETIME
+ , wxDateTime::Now()
+#endif // wxUSE_DATETIME
+ );
}
- else
- {
- return (wxFSFile*) NULL; // we can't open the URL
- }
}
- // Load item from cache:
- s = new wxFileInputStream(info->GetTemp());
- if (s)
- {
- return new wxFSFile(s,
- right,
- info->GetMime(),
- GetAnchor(location));
- }
- else return (wxFSFile*) NULL;
+ return (wxFSFile*) NULL; // incorrect URL
+#endif
}
-
-wxInternetFSHandler::~wxInternetFSHandler()
+class wxFileSystemInternetModule : public wxModule
{
- wxNode *n;
- wxInetCacheNode *n2;
+ DECLARE_DYNAMIC_CLASS(wxFileSystemInternetModule)
- m_Cache.BeginFind();
- while ((n = m_Cache.Next()) != NULL)
- {
- n2 = (wxInetCacheNode*) n->GetData();
- wxRemoveFile(n2->GetTemp());
- delete n2;
- }
-}
+ public:
+ virtual bool OnInit()
+ {
+ wxFileSystem::AddHandler(new wxInternetFSHandler);
+ return true;
+ }
+ virtual void OnExit() {}
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxFileSystemInternetModule, wxModule)
-#endif // wxUSE_FS_INET
+#endif // wxUSE_FILESYSTEM && wxUSE_FS_INET
projects / wxWidgets.git / blobdiff