379 lines
11 KiB
C++
379 lines
11 KiB
C++
/////////////////////////////////////////////////////////////////////////////
|
|
// Name: wx/archive.h
|
|
// Purpose: Streams for archive formats
|
|
// Author: Mike Wetherell
|
|
// Copyright: (c) 2004 Mike Wetherell
|
|
// Licence: wxWindows licence
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifndef _WX_ARCHIVE_H__
|
|
#define _WX_ARCHIVE_H__
|
|
|
|
#include "wx/defs.h"
|
|
|
|
#if wxUSE_STREAMS && wxUSE_ARCHIVE_STREAMS
|
|
|
|
#include "wx/stream.h"
|
|
#include "wx/filename.h"
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveNotifier
|
|
|
|
class WXDLLIMPEXP_BASE wxArchiveNotifier
|
|
{
|
|
public:
|
|
virtual ~wxArchiveNotifier() { }
|
|
|
|
virtual void OnEntryUpdated(class wxArchiveEntry& entry) = 0;
|
|
};
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveEntry
|
|
//
|
|
// Holds an entry's meta data, such as filename and timestamp.
|
|
|
|
class WXDLLIMPEXP_BASE wxArchiveEntry : public wxObject
|
|
{
|
|
public:
|
|
virtual ~wxArchiveEntry() { }
|
|
|
|
virtual wxDateTime GetDateTime() const = 0;
|
|
virtual wxFileOffset GetSize() const = 0;
|
|
virtual wxFileOffset GetOffset() const = 0;
|
|
virtual bool IsDir() const = 0;
|
|
virtual bool IsReadOnly() const = 0;
|
|
virtual wxString GetInternalName() const = 0;
|
|
virtual wxPathFormat GetInternalFormat() const = 0;
|
|
virtual wxString GetName(wxPathFormat format = wxPATH_NATIVE) const = 0;
|
|
|
|
virtual void SetDateTime(const wxDateTime& dt) = 0;
|
|
virtual void SetSize(wxFileOffset size) = 0;
|
|
virtual void SetIsDir(bool isDir = true) = 0;
|
|
virtual void SetIsReadOnly(bool isReadOnly = true) = 0;
|
|
virtual void SetName(const wxString& name,
|
|
wxPathFormat format = wxPATH_NATIVE) = 0;
|
|
|
|
wxArchiveEntry *Clone() const { return DoClone(); }
|
|
|
|
void SetNotifier(wxArchiveNotifier& notifier);
|
|
virtual void UnsetNotifier() { m_notifier = NULL; }
|
|
|
|
protected:
|
|
wxArchiveEntry() : m_notifier(NULL) { }
|
|
wxArchiveEntry(const wxArchiveEntry& e) : wxObject(e), m_notifier(NULL) { }
|
|
|
|
virtual void SetOffset(wxFileOffset offset) = 0;
|
|
virtual wxArchiveEntry* DoClone() const = 0;
|
|
|
|
wxArchiveNotifier *GetNotifier() const { return m_notifier; }
|
|
wxArchiveEntry& operator=(const wxArchiveEntry& entry);
|
|
|
|
private:
|
|
wxArchiveNotifier *m_notifier;
|
|
|
|
wxDECLARE_ABSTRACT_CLASS(wxArchiveEntry);
|
|
};
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveInputStream
|
|
//
|
|
// GetNextEntry() returns a wxArchiveEntry object containing the meta-data
|
|
// for the next entry in the archive (and gives away ownership). Reading from
|
|
// the wxArchiveInputStream then returns the entry's data. Eof() becomes true
|
|
// after an attempt has been made to read past the end of the entry's data.
|
|
//
|
|
// When there are no more entries, GetNextEntry() returns NULL and sets Eof().
|
|
|
|
class WXDLLIMPEXP_BASE wxArchiveInputStream : public wxFilterInputStream
|
|
{
|
|
public:
|
|
typedef wxArchiveEntry entry_type;
|
|
|
|
virtual ~wxArchiveInputStream() { }
|
|
|
|
virtual bool OpenEntry(wxArchiveEntry& entry) = 0;
|
|
virtual bool CloseEntry() = 0;
|
|
|
|
wxArchiveEntry *GetNextEntry() { return DoGetNextEntry(); }
|
|
|
|
virtual char Peek() wxOVERRIDE { return wxInputStream::Peek(); }
|
|
|
|
protected:
|
|
wxArchiveInputStream(wxInputStream& stream, wxMBConv& conv);
|
|
wxArchiveInputStream(wxInputStream *stream, wxMBConv& conv);
|
|
|
|
virtual wxArchiveEntry *DoGetNextEntry() = 0;
|
|
|
|
wxMBConv& GetConv() const { return m_conv; }
|
|
|
|
private:
|
|
wxMBConv& m_conv;
|
|
};
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveOutputStream
|
|
//
|
|
// PutNextEntry is used to create a new entry in the output archive, then
|
|
// the entry's data is written to the wxArchiveOutputStream.
|
|
//
|
|
// Only one entry can be open for output at a time; another call to
|
|
// PutNextEntry closes the current entry and begins the next.
|
|
//
|
|
// The overload 'bool PutNextEntry(wxArchiveEntry *entry)' takes ownership
|
|
// of the entry object.
|
|
|
|
class WXDLLIMPEXP_BASE wxArchiveOutputStream : public wxFilterOutputStream
|
|
{
|
|
public:
|
|
virtual ~wxArchiveOutputStream() { }
|
|
|
|
virtual bool PutNextEntry(wxArchiveEntry *entry) = 0;
|
|
|
|
virtual bool PutNextEntry(const wxString& name,
|
|
const wxDateTime& dt = wxDateTime::Now(),
|
|
wxFileOffset size = wxInvalidOffset) = 0;
|
|
|
|
virtual bool PutNextDirEntry(const wxString& name,
|
|
const wxDateTime& dt = wxDateTime::Now()) = 0;
|
|
|
|
virtual bool CopyEntry(wxArchiveEntry *entry,
|
|
wxArchiveInputStream& stream) = 0;
|
|
|
|
virtual bool CopyArchiveMetaData(wxArchiveInputStream& stream) = 0;
|
|
|
|
virtual bool CloseEntry() = 0;
|
|
|
|
protected:
|
|
wxArchiveOutputStream(wxOutputStream& stream, wxMBConv& conv);
|
|
wxArchiveOutputStream(wxOutputStream *stream, wxMBConv& conv);
|
|
|
|
wxMBConv& GetConv() const { return m_conv; }
|
|
|
|
private:
|
|
wxMBConv& m_conv;
|
|
};
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveIterator
|
|
//
|
|
// An input iterator that can be used to transfer an archive's catalog to
|
|
// a container.
|
|
|
|
#if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR
|
|
#include <iterator>
|
|
#include <utility>
|
|
|
|
template <class X, class Y> inline
|
|
void _wxSetArchiveIteratorValue(
|
|
X& val, Y entry, void *WXUNUSED(d))
|
|
{
|
|
val = X(entry);
|
|
}
|
|
template <class X, class Y, class Z> inline
|
|
void _wxSetArchiveIteratorValue(
|
|
std::pair<X, Y>& val, Z entry, Z WXUNUSED(d))
|
|
{
|
|
val = std::make_pair(X(entry->GetInternalName()), Y(entry));
|
|
}
|
|
|
|
template <class Arc, class T = typename Arc::entry_type*>
|
|
class wxArchiveIterator
|
|
{
|
|
public:
|
|
typedef std::input_iterator_tag iterator_category;
|
|
typedef T value_type;
|
|
typedef ptrdiff_t difference_type;
|
|
typedef T* pointer;
|
|
typedef T& reference;
|
|
|
|
wxArchiveIterator() : m_rep(NULL) { }
|
|
|
|
wxArchiveIterator(Arc& arc) {
|
|
typename Arc::entry_type* entry = arc.GetNextEntry();
|
|
m_rep = entry ? new Rep(arc, entry) : NULL;
|
|
}
|
|
|
|
wxArchiveIterator(const wxArchiveIterator& it) : m_rep(it.m_rep) {
|
|
if (m_rep)
|
|
m_rep->AddRef();
|
|
}
|
|
|
|
~wxArchiveIterator() {
|
|
if (m_rep)
|
|
m_rep->UnRef();
|
|
}
|
|
|
|
const T& operator *() const {
|
|
return m_rep->GetValue();
|
|
}
|
|
|
|
const T* operator ->() const {
|
|
return &**this;
|
|
}
|
|
|
|
wxArchiveIterator& operator =(const wxArchiveIterator& it) {
|
|
if (it.m_rep)
|
|
it.m_rep.AddRef();
|
|
if (m_rep)
|
|
this->m_rep.UnRef();
|
|
m_rep = it.m_rep;
|
|
return *this;
|
|
}
|
|
|
|
wxArchiveIterator& operator ++() {
|
|
m_rep = m_rep->Next();
|
|
return *this;
|
|
}
|
|
|
|
wxArchiveIterator operator ++(int) {
|
|
wxArchiveIterator it(*this);
|
|
++(*this);
|
|
return it;
|
|
}
|
|
|
|
bool operator ==(const wxArchiveIterator& j) const {
|
|
return m_rep == j.m_rep;
|
|
}
|
|
|
|
bool operator !=(const wxArchiveIterator& j) const {
|
|
return !(*this == j);
|
|
}
|
|
|
|
private:
|
|
class Rep {
|
|
Arc& m_arc;
|
|
typename Arc::entry_type* m_entry;
|
|
T m_value;
|
|
int m_ref;
|
|
|
|
public:
|
|
Rep(Arc& arc, typename Arc::entry_type* entry)
|
|
: m_arc(arc), m_entry(entry), m_value(), m_ref(1) { }
|
|
~Rep()
|
|
{ delete m_entry; }
|
|
|
|
void AddRef() {
|
|
m_ref++;
|
|
}
|
|
|
|
void UnRef() {
|
|
if (--m_ref == 0)
|
|
delete this;
|
|
}
|
|
|
|
Rep *Next() {
|
|
typename Arc::entry_type* entry = m_arc.GetNextEntry();
|
|
if (!entry) {
|
|
UnRef();
|
|
return NULL;
|
|
}
|
|
if (m_ref > 1) {
|
|
m_ref--;
|
|
return new Rep(m_arc, entry);
|
|
}
|
|
delete m_entry;
|
|
m_entry = entry;
|
|
m_value = T();
|
|
return this;
|
|
}
|
|
|
|
const T& GetValue() {
|
|
if (m_entry) {
|
|
_wxSetArchiveIteratorValue(m_value, m_entry, m_entry);
|
|
m_entry = NULL;
|
|
}
|
|
return m_value;
|
|
}
|
|
} *m_rep;
|
|
};
|
|
|
|
typedef wxArchiveIterator<wxArchiveInputStream> wxArchiveIter;
|
|
typedef wxArchiveIterator<wxArchiveInputStream,
|
|
std::pair<wxString, wxArchiveEntry*> > wxArchivePairIter;
|
|
|
|
#endif // wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR
|
|
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// wxArchiveClassFactory
|
|
//
|
|
// A wxArchiveClassFactory instance for a particular archive type allows
|
|
// the creation of the other classes that may be needed.
|
|
|
|
void WXDLLIMPEXP_BASE wxUseArchiveClasses();
|
|
|
|
class WXDLLIMPEXP_BASE wxArchiveClassFactory : public wxFilterClassFactoryBase
|
|
{
|
|
public:
|
|
typedef wxArchiveEntry entry_type;
|
|
typedef wxArchiveInputStream instream_type;
|
|
typedef wxArchiveOutputStream outstream_type;
|
|
typedef wxArchiveNotifier notifier_type;
|
|
#if wxUSE_STL || defined WX_TEST_ARCHIVE_ITERATOR
|
|
typedef wxArchiveIter iter_type;
|
|
typedef wxArchivePairIter pairiter_type;
|
|
#endif
|
|
|
|
virtual ~wxArchiveClassFactory() { }
|
|
|
|
wxArchiveEntry *NewEntry() const
|
|
{ return DoNewEntry(); }
|
|
wxArchiveInputStream *NewStream(wxInputStream& stream) const
|
|
{ return DoNewStream(stream); }
|
|
wxArchiveOutputStream *NewStream(wxOutputStream& stream) const
|
|
{ return DoNewStream(stream); }
|
|
wxArchiveInputStream *NewStream(wxInputStream *stream) const
|
|
{ return DoNewStream(stream); }
|
|
wxArchiveOutputStream *NewStream(wxOutputStream *stream) const
|
|
{ return DoNewStream(stream); }
|
|
|
|
virtual wxString GetInternalName(
|
|
const wxString& name,
|
|
wxPathFormat format = wxPATH_NATIVE) const = 0;
|
|
|
|
// FIXME-UTF8: remove these from this file, they are used for ANSI
|
|
// build only
|
|
void SetConv(wxMBConv& conv) { m_pConv = &conv; }
|
|
wxMBConv& GetConv() const
|
|
{ if (m_pConv) return *m_pConv; else return wxConvLocal; }
|
|
|
|
static const wxArchiveClassFactory *Find(const wxString& protocol,
|
|
wxStreamProtocolType type
|
|
= wxSTREAM_PROTOCOL);
|
|
|
|
static const wxArchiveClassFactory *GetFirst();
|
|
const wxArchiveClassFactory *GetNext() const { return m_next; }
|
|
|
|
void PushFront() { Remove(); m_next = sm_first; sm_first = this; }
|
|
void Remove();
|
|
|
|
protected:
|
|
// old compilers don't support covarient returns, so 'Do' methods are
|
|
// used to simulate them
|
|
virtual wxArchiveEntry *DoNewEntry() const = 0;
|
|
virtual wxArchiveInputStream *DoNewStream(wxInputStream& stream) const = 0;
|
|
virtual wxArchiveOutputStream *DoNewStream(wxOutputStream& stream) const = 0;
|
|
virtual wxArchiveInputStream *DoNewStream(wxInputStream *stream) const = 0;
|
|
virtual wxArchiveOutputStream *DoNewStream(wxOutputStream *stream) const = 0;
|
|
|
|
wxArchiveClassFactory() : m_pConv(NULL), m_next(this) { }
|
|
wxArchiveClassFactory& operator=(const wxArchiveClassFactory& WXUNUSED(f))
|
|
{ return *this; }
|
|
|
|
private:
|
|
wxMBConv *m_pConv;
|
|
static wxArchiveClassFactory *sm_first;
|
|
wxArchiveClassFactory *m_next;
|
|
|
|
wxDECLARE_ABSTRACT_CLASS(wxArchiveClassFactory);
|
|
};
|
|
|
|
#endif // wxUSE_STREAMS && wxUSE_ARCHIVE_STREAMS
|
|
|
|
#endif // _WX_ARCHIVE_H__
|