/////////////////////////////////////////////////////////////////////////////
-// Name: fs_inet.cpp
+// Name: src/common/fs_inet.cpp
// Purpose: HTTP and FTP file system
// Author: Vaclav Slavik
// Copyright: (c) 1999 Vaclav Slavik
-// Licence: wxWindows Licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*
-
-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 "fs_inet.h"
-#endif
-
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#if !wxUSE_SOCKETS
#if wxUSE_FILESYSTEM && wxUSE_FS_INET
-#ifndef WXPRECOMP
+#ifndef WX_PRECOMP
+ #include "wx/module.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
-{
- private:
- wxString m_Temp;
- wxString m_Mime;
- 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;}
-};
+// ----------------------------------------------------------------------------
+// Helper classes
+// ----------------------------------------------------------------------------
+// This stream deletes the file when destroyed
+class wxTemporaryFileInputStream : public wxFileInputStream
+{
+public:
+ wxTemporaryFileInputStream(const wxString& filename) :
+ wxFileInputStream(filename), m_filename(filename) {}
+ virtual ~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.IsEmpty()) myloc = location.AfterFirst(wxT(':'));
+ if (myloc.empty()) myloc = location.AfterFirst(wxT(':'));
else myloc = myloc.AfterFirst(wxT(':'));
// fix malformed url:
- if (myloc.Left(2) != wxT("//"))
+ if (!myloc.Left(2).IsSameAs(wxT("//")))
{
if (myloc.GetChar(0) != wxT('/')) myloc = wxT("//") + myloc;
else myloc = wxT("/") + myloc;
}
-
bool wxInternetFSHandler::CanOpen(const wxString& location)
{
+#if wxUSE_URL
wxString p = GetProtocol(location);
if ((p == wxT("http")) || (p == wxT("ftp")))
{
wxURL url(p + wxT(":") + StripProtocolAnchor(location));
return (url.GetError() == wxURL_NOERR);
}
-
- return FALSE;
+#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) + wxT(":") + StripProtocolAnchor(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);
- if (url.GetError() == wxURL_NOERR)
+ wxInputStream *s = url.GetInputStream();
+ wxString content = url.GetProtocol().GetContentType();
+ if (s)
{
- s = url.GetInputStream();
- content = url.GetProtocol().GetContentType();
- if (content == wxEmptyString) content = GetMimeTypeFromExt(location);
- if (s)
- {
- wxChar buf[256];
-
- wxGetTempFileName( wxT("wxhtml"), buf);
- info = new wxInetCacheNode(buf, content);
- m_Cache.Put(right, info);
-
- { // ok, now copy it:
- wxFileOutputStream sout((wxString)buf);
- s -> Read(sout); // copy the stream
- }
- delete s;
- }
- else
- return (wxFSFile*) NULL; // we can't open the URL
- }
- else
- return (wxFSFile*) NULL; // incorrect URL
- }
+ wxString tmpfile =
+ wxFileName::CreateTempFileName(wxT("wxhtml"));
- // Load item from cache:
- s = new wxFileInputStream(info->GetTemp());
- if (!s)
- return (wxFSFile*) NULL;
+ { // now copy streams content to temporary file:
+ wxFileOutputStream sout(tmpfile);
+ s->Read(sout);
+ }
+ delete s;
- return new wxFSFile(s,
- right,
- info->GetMime(),
- GetAnchor(location)
+ return new wxFSFile(new wxTemporaryFileInputStream(tmpfile),
+ right,
+ content,
+ GetAnchor(location)
#if wxUSE_DATETIME
- , wxDateTime::Now()
+ , wxDateTime::Now()
#endif // wxUSE_DATETIME
);
-}
-
-
-
-wxInternetFSHandler::~wxInternetFSHandler()
-{
- wxNode *n;
- wxInetCacheNode *n2;
-
- m_Cache.BeginFind();
- while ((n = m_Cache.Next()) != NULL)
- {
- n2 = (wxInetCacheNode*) n->GetData();
- wxRemoveFile(n2->GetTemp());
- delete n2;
+ }
}
+
+ return NULL; // incorrect URL
+#endif
}
+
class wxFileSystemInternetModule : public wxModule
{
DECLARE_DYNAMIC_CLASS(wxFileSystemInternetModule)
public:
+ wxFileSystemInternetModule() :
+ wxModule(),
+ m_handler(NULL)
+ {
+ }
+
virtual bool OnInit()
{
- wxFileSystem::AddHandler(new wxInternetFSHandler);
- return TRUE;
+ m_handler = new wxInternetFSHandler;
+ wxFileSystem::AddHandler(m_handler);
+ return true;
+ }
+
+ virtual void OnExit()
+ {
+ delete wxFileSystem::RemoveHandler(m_handler);
}
- virtual void OnExit() {}
+
+ private:
+ wxFileSystemHandler* m_handler;
};
IMPLEMENT_DYNAMIC_CLASS(wxFileSystemInternetModule, wxModule)
projects / wxWidgets.git / blobdiff