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473 lines
12 KiB
C++
473 lines
12 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: src/msw/dir.cpp
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// Purpose: wxDir implementation for Win32
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 08.12.99
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// Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/intl.h"
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#include "wx/log.h"
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#endif // PCH
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#include "wx/dir.h"
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#ifdef __WINDOWS__
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#include "wx/msw/private.h"
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#endif
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// ----------------------------------------------------------------------------
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// define the types and functions used for file searching
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// ----------------------------------------------------------------------------
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namespace
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{
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typedef WIN32_FIND_DATA FIND_STRUCT;
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typedef HANDLE FIND_DATA;
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typedef DWORD FIND_ATTR;
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inline FIND_DATA InitFindData()
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{
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return INVALID_HANDLE_VALUE;
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}
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inline bool IsFindDataOk(FIND_DATA fd)
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{
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return fd != INVALID_HANDLE_VALUE;
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}
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inline void FreeFindData(FIND_DATA fd)
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{
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if ( !::FindClose(fd) )
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{
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wxLogLastError(wxT("FindClose"));
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}
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}
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const wxChar *GetNameFromFindData(const FIND_STRUCT *finddata)
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{
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return finddata->cFileName;
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}
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// Helper function checking that the contents of the given FIND_STRUCT really
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// match our filter. We need to do it ourselves as native Windows functions
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// apply the filter to both the long and the short names of the file, so
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// something like "*.bar" matches "foo.bar.baz" too and not only "foo.bar", so
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// we have to double check that we have a real match.
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inline bool
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CheckFoundMatch(const FIND_STRUCT* finddata, const wxString& filter)
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{
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// If there is no filter, the found file must be the one we really are
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// looking for.
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if ( filter.empty() )
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return true;
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// Otherwise do check the match validity. Notice that we must do it
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// case-insensitively because the case of the file names is not supposed to
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// matter under Windows.
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wxString fn(GetNameFromFindData(finddata));
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// However if the filter contains only special characters (which is a
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// common case), we can skip the case conversion.
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if ( filter.find_first_not_of(wxS("*?.")) == wxString::npos )
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return fn.Matches(filter);
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return fn.MakeUpper().Matches(filter.Upper());
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}
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inline bool
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FindNext(FIND_DATA fd, const wxString& filter, FIND_STRUCT *finddata)
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{
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for ( ;; )
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{
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if ( !::FindNextFile(fd, finddata) )
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return false;
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// If we did find something, check that it really matches.
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if ( CheckFoundMatch(finddata, filter) )
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return true;
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}
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}
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inline FIND_DATA
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FindFirst(const wxString& spec,
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const wxString& filter,
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FIND_STRUCT *finddata)
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{
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FIND_DATA fd = ::FindFirstFile(spec.t_str(), finddata);
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// As in FindNext() above, we need to check that the file name we found
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// really matches our filter and look for the next match if it doesn't.
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if ( IsFindDataOk(fd) && !CheckFoundMatch(finddata, filter) )
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{
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if ( !FindNext(fd, filter, finddata) )
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{
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// As we return the invalid handle from here to indicate that we
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// didn't find anything, close the one we initially received
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// ourselves.
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FreeFindData(fd);
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return INVALID_HANDLE_VALUE;
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}
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}
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return fd;
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}
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inline FIND_ATTR GetAttrFromFindData(FIND_STRUCT *finddata)
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{
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return finddata->dwFileAttributes;
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}
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inline bool IsDir(FIND_ATTR attr)
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{
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return (attr & FILE_ATTRIBUTE_DIRECTORY) != 0;
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}
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inline bool IsHidden(FIND_ATTR attr)
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{
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return (attr & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) != 0;
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}
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} // anonymous namespace
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// ----------------------------------------------------------------------------
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// constants
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// ----------------------------------------------------------------------------
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#ifndef MAX_PATH
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#define MAX_PATH 260 // from VC++ headers
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#endif
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// ----------------------------------------------------------------------------
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// macros
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// ----------------------------------------------------------------------------
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#define M_DIR ((wxDirData *)m_data)
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// ----------------------------------------------------------------------------
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// private classes
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// ----------------------------------------------------------------------------
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// this class stores everything we need to enumerate the files
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class wxDirData
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{
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public:
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wxDirData(const wxString& dirname);
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~wxDirData();
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void SetFileSpec(const wxString& filespec) { m_filespec = filespec; }
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void SetFlags(int flags) { m_flags = flags; }
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void Close();
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void Rewind();
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bool Read(wxString *filename);
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const wxString& GetName() const { return m_dirname; }
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private:
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FIND_DATA m_finddata;
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wxString m_dirname;
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wxString m_filespec;
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int m_flags;
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wxDECLARE_NO_COPY_CLASS(wxDirData);
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};
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// ============================================================================
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// implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxDirData
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// ----------------------------------------------------------------------------
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wxDirData::wxDirData(const wxString& dirname)
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: m_dirname(dirname)
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{
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m_finddata = InitFindData();
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}
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wxDirData::~wxDirData()
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{
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Close();
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}
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void wxDirData::Close()
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{
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if ( IsFindDataOk(m_finddata) )
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{
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FreeFindData(m_finddata);
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m_finddata = InitFindData();
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}
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}
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void wxDirData::Rewind()
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{
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Close();
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}
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bool wxDirData::Read(wxString *filename)
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{
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bool first = false;
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WIN32_FIND_DATA finddata;
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#define PTR_TO_FINDDATA (&finddata)
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if ( !IsFindDataOk(m_finddata) )
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{
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// open first
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wxString filespec = m_dirname;
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if ( !wxEndsWithPathSeparator(filespec) )
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{
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filespec += wxT('\\');
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}
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if ( !m_filespec )
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filespec += wxT("*.*");
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else
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filespec += m_filespec;
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m_finddata = FindFirst(filespec, m_filespec, PTR_TO_FINDDATA);
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first = true;
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}
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if ( !IsFindDataOk(m_finddata) )
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{
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#ifdef __WIN32__
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DWORD err = ::GetLastError();
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if ( err != ERROR_FILE_NOT_FOUND && err != ERROR_NO_MORE_FILES )
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{
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wxLogSysError(err, _("Cannot enumerate files in directory '%s'"),
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m_dirname.c_str());
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}
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#endif // __WIN32__
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//else: not an error, just no (such) files
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return false;
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}
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const wxChar *name;
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FIND_ATTR attr;
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for ( ;; )
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{
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if ( first )
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{
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first = false;
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}
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else
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{
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if ( !FindNext(m_finddata, m_filespec, PTR_TO_FINDDATA) )
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{
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#ifdef __WIN32__
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DWORD err = ::GetLastError();
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if ( err != ERROR_NO_MORE_FILES )
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{
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wxLogLastError(wxT("FindNext"));
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}
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#endif // __WIN32__
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//else: not an error, just no more (such) files
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return false;
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}
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}
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name = GetNameFromFindData(PTR_TO_FINDDATA);
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attr = GetAttrFromFindData(PTR_TO_FINDDATA);
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// don't return "." and ".." unless asked for
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if ( name[0] == wxT('.') &&
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((name[1] == wxT('.') && name[2] == wxT('\0')) ||
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(name[1] == wxT('\0'))) )
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{
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if ( !(m_flags & wxDIR_DOTDOT) )
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continue;
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}
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// check the type now
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if ( !(m_flags & wxDIR_FILES) && !IsDir(attr) )
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{
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// it's a file, but we don't want them
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continue;
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}
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else if ( !(m_flags & wxDIR_DIRS) && IsDir(attr) )
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{
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// it's a dir, and we don't want it
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continue;
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}
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// finally, check whether it's a hidden file
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if ( !(m_flags & wxDIR_HIDDEN) )
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{
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if ( IsHidden(attr) )
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{
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// it's a hidden file, skip it
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continue;
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}
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}
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*filename = name;
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break;
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}
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return true;
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}
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// ----------------------------------------------------------------------------
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// wxDir construction/destruction
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// ----------------------------------------------------------------------------
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wxDir::wxDir(const wxString& dirname)
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{
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m_data = NULL;
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(void)Open(dirname);
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}
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bool wxDir::Open(const wxString& dirname)
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{
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delete M_DIR;
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// The Unix code does a similar test
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if (wxDirExists(dirname))
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{
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m_data = new wxDirData(dirname);
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return true;
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}
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else
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{
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m_data = NULL;
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return false;
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}
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}
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bool wxDir::IsOpened() const
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{
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return m_data != NULL;
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}
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wxString wxDir::GetName() const
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{
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wxString name;
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if ( m_data )
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{
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name = M_DIR->GetName();
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if ( !name.empty() )
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{
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// bring to canonical Windows form
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name.Replace(wxT("/"), wxT("\\"));
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if ( name.Last() == wxT('\\') )
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{
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// chop off the last (back)slash
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name.Truncate(name.length() - 1);
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}
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}
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}
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return name;
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}
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void wxDir::Close()
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{
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if ( m_data )
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{
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delete m_data;
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m_data = NULL;
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}
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}
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// ----------------------------------------------------------------------------
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// wxDir enumerating
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// ----------------------------------------------------------------------------
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bool wxDir::GetFirst(wxString *filename,
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const wxString& filespec,
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int flags) const
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{
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wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
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M_DIR->Rewind();
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M_DIR->SetFileSpec(filespec);
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M_DIR->SetFlags(flags);
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return GetNext(filename);
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}
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bool wxDir::GetNext(wxString *filename) const
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{
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wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
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wxCHECK_MSG( filename, false, wxT("bad pointer in wxDir::GetNext()") );
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return M_DIR->Read(filename);
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}
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// ----------------------------------------------------------------------------
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// wxGetDirectoryTimes: used by wxFileName::GetTimes()
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// ----------------------------------------------------------------------------
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#ifdef __WIN32__
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extern bool
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wxGetDirectoryTimes(const wxString& dirname,
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FILETIME *ftAccess, FILETIME *ftCreate, FILETIME *ftMod)
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{
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#ifdef __WXWINCE__
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// FindFirst() is going to fail
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wxASSERT_MSG( !dirname.empty(),
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wxT("incorrect directory name format in wxGetDirectoryTimes") );
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#else
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// FindFirst() is going to fail
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wxASSERT_MSG( !dirname.empty() && dirname.Last() != wxT('\\'),
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wxT("incorrect directory name format in wxGetDirectoryTimes") );
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#endif
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FIND_STRUCT fs;
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FIND_DATA fd = FindFirst(dirname, wxEmptyString, &fs);
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if ( !IsFindDataOk(fd) )
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{
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return false;
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}
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*ftAccess = fs.ftLastAccessTime;
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*ftCreate = fs.ftCreationTime;
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*ftMod = fs.ftLastWriteTime;
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FindClose(fd);
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return true;
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}
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#endif // __WIN32__
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