// Name: src/common/fs_mem.cpp
// Purpose: in-memory file system
// Author: Vaclav Slavik
-// RCS-ID: $Id$
// Copyright: (c) 2000 Vaclav Slavik
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef WX_PRECOMP
#include "wx/intl.h"
#include "wx/log.h"
- #include "wx/hash.h"
#include "wx/wxcrtvararg.h"
#if wxUSE_GUI
#include "wx/image.h"
#include "wx/mstream.h"
-class MemFSHashObj : public wxObject
+// represents a file entry in wxMemoryFS
+class wxMemoryFSFile
{
- public:
-
- MemFSHashObj(const void *data, size_t len, const wxString& mime)
- {
- m_Data = new char[len];
- memcpy(m_Data, data, len);
- m_Len = len;
- m_MimeType = mime;
- InitTime();
- }
-
- MemFSHashObj(const wxMemoryOutputStream& stream, const wxString& mime)
- {
- m_Len = stream.GetSize();
- m_Data = new char[m_Len];
- stream.CopyTo(m_Data, m_Len);
- m_MimeType = mime;
- InitTime();
- }
-
- virtual ~MemFSHashObj()
- {
- delete[] m_Data;
- }
-
- char *m_Data;
- size_t m_Len;
- wxString m_MimeType;
+public:
+ wxMemoryFSFile(const void *data, size_t len, const wxString& mime)
+ {
+ m_Data = new char[len];
+ memcpy(m_Data, data, len);
+ m_Len = len;
+ m_MimeType = mime;
+ InitTime();
+ }
+
+ wxMemoryFSFile(const wxMemoryOutputStream& stream, const wxString& mime)
+ {
+ m_Len = stream.GetSize();
+ m_Data = new char[m_Len];
+ stream.CopyTo(m_Data, m_Len);
+ m_MimeType = mime;
+ InitTime();
+ }
+
+ virtual ~wxMemoryFSFile()
+ {
+ delete[] m_Data;
+ }
+
+ char *m_Data;
+ size_t m_Len;
+ wxString m_MimeType;
#if wxUSE_DATETIME
- wxDateTime m_Time;
+ wxDateTime m_Time;
#endif // wxUSE_DATETIME
- DECLARE_NO_COPY_CLASS(MemFSHashObj)
-
- private:
- void InitTime()
- {
+private:
+ void InitTime()
+ {
#if wxUSE_DATETIME
- m_Time = wxDateTime::Now();
+ m_Time = wxDateTime::Now();
#endif // wxUSE_DATETIME
- }
+ }
+
+ wxDECLARE_NO_COPY_CLASS(wxMemoryFSFile);
};
#if wxUSE_BASE
//--------------------------------------------------------------------------------
-wxHashTable *wxMemoryFSHandlerBase::m_Hash = NULL;
+wxMemoryFSHash wxMemoryFSHandlerBase::m_Hash;
wxMemoryFSHandlerBase::wxMemoryFSHandlerBase() : wxFileSystemHandler()
{
}
-
-
wxMemoryFSHandlerBase::~wxMemoryFSHandlerBase()
{
// as only one copy of FS handler is supposed to exist, we may silently
// delete static data here. (There is no way how to remove FS handler from
// wxFileSystem other than releasing _all_ handlers.)
-
- if (m_Hash)
- {
- WX_CLEAR_HASH_TABLE(*m_Hash);
- delete m_Hash;
- m_Hash = NULL;
- }
+ WX_CLEAR_HASH_MAP(wxMemoryFSHash, m_Hash);
}
-
-
bool wxMemoryFSHandlerBase::CanOpen(const wxString& location)
{
- wxString p = GetProtocol(location);
- return (p == wxT("memory"));
+ return GetProtocol(location) == "memory";
}
-
-
-
-wxFSFile* wxMemoryFSHandlerBase::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
+wxFSFile * wxMemoryFSHandlerBase::OpenFile(wxFileSystem& WXUNUSED(fs),
+ const wxString& location)
{
- if (m_Hash)
- {
- MemFSHashObj *obj = (MemFSHashObj*) m_Hash -> Get(GetRightLocation(location));
- if (obj == NULL) return NULL;
- else return new wxFSFile(new wxMemoryInputStream(obj -> m_Data, obj -> m_Len),
- location,
- obj->m_MimeType,
- GetAnchor(location)
+ wxMemoryFSHash::const_iterator i = m_Hash.find(GetRightLocation(location));
+ if ( i == m_Hash.end() )
+ return NULL;
+
+ const wxMemoryFSFile * const obj = i->second;
+
+ return new wxFSFile
+ (
+ new wxMemoryInputStream(obj->m_Data, obj->m_Len),
+ location,
+ obj->m_MimeType,
+ GetAnchor(location)
#if wxUSE_DATETIME
- , obj -> m_Time
+ , obj->m_Time
#endif // wxUSE_DATETIME
- );
- }
- else return NULL;
+ );
}
-
-
-wxString wxMemoryFSHandlerBase::FindFirst(const wxString& WXUNUSED(spec),
- int WXUNUSED(flags))
+wxString wxMemoryFSHandlerBase::FindFirst(const wxString& url, int flags)
{
- wxFAIL_MSG(wxT("wxMemoryFSHandlerBase::FindFirst not implemented"));
+ if ( (flags & wxDIR) && !(flags & wxFILE) )
+ {
+ // we only store files, not directories, so we don't risk finding
+ // anything
+ return wxString();
+ }
- return wxEmptyString;
-}
+ const wxString spec = GetRightLocation(url);
+ if ( spec.find_first_of("?*") == wxString::npos )
+ {
+ // simple case: there are no wildcard characters so we can return
+ // either 0 or 1 results and we can find the potential match quickly
+ return m_Hash.count(spec) ? url : wxString();
+ }
+ //else: deal with wildcards in FindNext()
+ m_findArgument = spec;
+ m_findIter = m_Hash.begin();
+ return FindNext();
+}
wxString wxMemoryFSHandlerBase::FindNext()
{
- wxFAIL_MSG(wxT("wxMemoryFSHandlerBase::FindNext not implemented"));
+ // m_findArgument is used to indicate that search is in progress, we reset
+ // it to empty string after iterating over all elements
+ while ( !m_findArgument.empty() )
+ {
+ // test for the match before (possibly) clearing m_findArgument below
+ const bool found = m_findIter->first.Matches(m_findArgument);
- return wxEmptyString;
-}
+ // advance m_findIter first as we need to do it anyhow, whether it
+ // matches or not
+ const wxMemoryFSHash::const_iterator current = m_findIter;
+ if ( ++m_findIter == m_Hash.end() )
+ m_findArgument.clear();
-bool wxMemoryFSHandlerBase::CheckHash(const wxString& filename)
-{
- if (m_Hash == NULL)
- {
- m_Hash = new wxHashTable(wxKEY_STRING);
+ if ( found )
+ return "memory:" + current->first;
}
- if (m_Hash -> Get(filename) != NULL)
+ return wxString();
+}
+
+bool wxMemoryFSHandlerBase::CheckDoesntExist(const wxString& filename)
+{
+ if ( m_Hash.count(filename) )
{
- wxString s;
- s.Printf(_("Memory VFS already contains file '%s'!"), filename.c_str());
- wxLogError(s);
+ wxLogError(_("Memory VFS already contains file '%s'!"), filename);
return false;
}
- else
- return true;
+
+ return true;
}
const wxString& textdata,
const wxString& mimetype)
{
- AddFileWithMimeType(filename,
- (const void*) textdata.mb_str(), textdata.length(),
- mimetype);
+ const wxCharBuffer buf(textdata.To8BitData());
+
+ AddFileWithMimeType(filename, buf.data(), buf.length(), mimetype);
}
const void *binarydata, size_t size,
const wxString& mimetype)
{
- if (!CheckHash(filename)) return;
- m_Hash -> Put(filename, new MemFSHashObj(binarydata, size, mimetype));
+ if ( !CheckDoesntExist(filename) )
+ return;
+
+ m_Hash[filename] = new wxMemoryFSFile(binarydata, size, mimetype);
}
/*static*/
/*static*/ void wxMemoryFSHandlerBase::RemoveFile(const wxString& filename)
{
- if (m_Hash == NULL ||
- m_Hash -> Get(filename) == NULL)
+ wxMemoryFSHash::iterator i = m_Hash.find(filename);
+ if ( i == m_Hash.end() )
{
- wxString s;
- s.Printf(_("Trying to remove file '%s' from memory VFS, but it is not loaded!"), filename.c_str());
- wxLogError(s);
+ wxLogError(_("Trying to remove file '%s' from memory VFS, "
+ "but it is not loaded!"),
+ filename);
+ return;
}
- else
- delete m_Hash -> Delete(filename);
+ delete i->second;
+ m_Hash.erase(i);
}
#endif // wxUSE_BASE
const wxImage& image,
wxBitmapType type)
{
- if (!CheckHash(filename)) return;
+ if ( !CheckDoesntExist(filename) )
+ return;
wxMemoryOutputStream mems;
- if (image.Ok() && image.SaveFile(mems, type))
+ if ( image.IsOk() && image.SaveFile(mems, type) )
{
- m_Hash->Put
- (
- filename,
- new MemFSHashObj
- (
- mems,
- wxImage::FindHandler(type)->GetMimeType()
- )
- );
+ m_Hash[filename] = new wxMemoryFSFile
+ (
+ mems,
+ wxImage::FindHandler(type)->GetMimeType()
+ );
}
else
{
- wxString s;
- s.Printf(_("Failed to store image '%s' to memory VFS!"), filename.c_str());
- wxPrintf(wxT("'%s'\n"), s.c_str());
- wxLogError(s);
+ wxLogError(_("Failed to store image '%s' to memory VFS!"), filename);
}
}
const wxBitmap& bitmap,
wxBitmapType type)
{
-#if !defined(__WXMSW__) || wxUSE_WXDIB
wxImage img = bitmap.ConvertToImage();
AddFile(filename, img, type);
-#endif
}
#endif // wxUSE_IMAGE
projects / wxWidgets.git / blobdiff