src/common/filesys.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        filesys.cpp
// Purpose:     wxFileSystem class - interface for opening files
// Author:      Vaclav Slavik
// Copyright:   (c) 1999 Vaclav Slavik
// CVS-ID:      $Id$
// Licence:     wxWindows Licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation
#endif

#include "wx/wxprec.h"

#ifdef __BORDLANDC__
#pragma hdrstop
#endif


#if wxUSE_FILESYSTEM

#include "wx/wfstream.h"
#include "wx/module.h"
#include "wx/filesys.h"
#include "wx/mimetype.h"


//--------------------------------------------------------------------------------
// wxFileSystemHandler
//--------------------------------------------------------------------------------

IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject)


wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location)
{
    wxString ext = wxEmptyString, mime = wxEmptyString;
    wxString loc = GetRightLocation(location);
    char c;
    int l = loc.Length(), l2;
    wxFileType *ft;

    l2 = l;
    for (int i = l-1; i >= 0; i--) {
        c = loc[(unsigned int) i];
        if (c == wxT('#')) l2 = i + 1;
        if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;}
        if ((c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) {return wxEmptyString;}
    }

    static bool s_MinimalMimeEnsured = FALSE;
    if (!s_MinimalMimeEnsured) {
        static const wxFileTypeInfo fallbacks[] =
        {
            wxFileTypeInfo("image/jpeg",
                           "",
                           "",
                           "JPEG image (from fallback)",
                           "jpg", "jpeg", NULL),
            wxFileTypeInfo("image/gif",
                           "",
                           "",
                           "GIF image (from fallback)",
                           "gif", NULL),
            wxFileTypeInfo("image/png",
                           "",
                           "",
                           "PNG image (from fallback)",
                           "png", NULL),
            wxFileTypeInfo("image/bmp",
                           "",
                           "",
                           "windows bitmap image (from fallback)",
                           "bmp", NULL),
            wxFileTypeInfo("text/html",
                           "",
                           "",
                           "HTML document (from fallback)",
                           "htm", "html", NULL),

            // must terminate the table with this!
            wxFileTypeInfo()
        };

        wxTheMimeTypesManager -> AddFallbacks(fallbacks);
    }

    ft = wxTheMimeTypesManager -> GetFileTypeFromExtension(ext);
    if (ft && (ft -> GetMimeType(&mime))) {
        delete ft;
        return mime;
    }
    else {
        delete ft;
        return wxEmptyString;
    }
}


wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
{
    wxString s = wxEmptyString;
    int i, l = location.Length();
    bool fnd;

    fnd = FALSE;
    for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) || (!fnd)); i--) {
        if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE;
    }
    if (!fnd) return wxT("file");
    for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
    return s;
}


wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
{
    int i;
    bool fnd;

    fnd = FALSE;
    for (i = location.Length()-1; i >= 0; i--) {
        if ((location[i] == wxT(':')) && (i != 1 /*win: C:\path*/)) fnd = TRUE;
        else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
    }
    return wxEmptyString;
}

wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
{
    int i, l = location.Length();
    int l2 = l + 1;
    for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) || (i == 1) || (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;}
    if (i == 0) return wxEmptyString;
    else return location.Mid(i + 1, l2 - i - 2);
}

wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
{
    char c;
    int l = location.Length();

    for (int i = l-1; i >= 0; i--) {
        c = location[i];
        if (c == wxT('#')) return location.Right(l-i-1);
        else if ((c == wxT('.')) || (c == wxT('/')) || (c == wxT('\\')) || (c == wxT(':'))) return wxEmptyString;
    }
    return wxEmptyString;
}


wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
                                        int WXUNUSED(flags))
{
    return wxEmptyString;
}

wxString wxFileSystemHandler::FindNext()
{
    return wxEmptyString;
}

//--------------------------------------------------------------------------------
// wxLocalFSHandler
//--------------------------------------------------------------------------------

class wxLocalFSHandler : public wxFileSystemHandler
{
    public:
        virtual bool CanOpen(const wxString& location);
        virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
        virtual wxString FindFirst(const wxString& spec, int flags = 0);
        virtual wxString FindNext();
};


bool wxLocalFSHandler::CanOpen(const wxString& location)
{
    return GetProtocol(location) == wxT("file");
}

wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
{
    wxString right = GetRightLocation(location);
    if (wxFileExists(right))
        return new wxFSFile(new wxFileInputStream(right),
                            right,
                            GetMimeTypeFromExt(location),
                            GetAnchor(location),
                            wxDateTime(wxFileModificationTime(right)));
    else return (wxFSFile*) NULL;
}

wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
{
    wxString right = GetRightLocation(spec);
    return wxFindFirstFile(right, flags);
}

wxString wxLocalFSHandler::FindNext()
{
    return wxFindNextFile();
}


//-----------------------------------------------------------------------------
// wxFileSystem
//-----------------------------------------------------------------------------

IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)


wxList wxFileSystem::m_Handlers;


static wxString MakeCorrectPath(const wxString& path)
{
    wxString p(path);
    wxString r;
    int i, j, cnt;

    cnt = p.Length();
    for (i = 0; i < cnt; i++)
      if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe

    if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }

    if (cnt < 3) return p;

    r << p.GetChar(0) << p.GetChar(1);

    // skip trailing ../.., if any
    for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') || p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);

    // remove back references: translate dir1/../dir2 to dir2
    for (; i < cnt; i++)
    {
        r << p.GetChar(i);
        if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
        {
            for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
            if (j >= 0 && r.GetChar(j) != wxT(':'))
            {
                for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
                r.Remove(j + 1);
            }
        }
    }

    for (; i < cnt; i++) r << p.GetChar(i);

    return r;
}


void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
{
    int i, pathpos = -1;

    m_Path = MakeCorrectPath(location);

    if (is_dir)
    {
        if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	        m_Path << wxT('/');
    }

    else
    {
        for (i = m_Path.Length()-1; i >= 0; i--)
    	{
            if (m_Path[(unsigned int) i] == wxT('/'))
	        {
                if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
		        {
                    i -= 2;
                    continue;
                }
                else
        		{
                    pathpos = i;
                    break;
                }
            }
            else if (m_Path[(unsigned int) i] == wxT(':')) {
                pathpos = i;
                break;
            }
        }
        if (pathpos == -1)
    	{
            for (i = 0; i < (int) m_Path.Length(); i++)
    	    {
                if (m_Path[(unsigned int) i] == wxT(':'))
        		{
                    m_Path.Remove(i+1);
                    break;
                }
            }
            if (i == (int) m_Path.Length())
    	        m_Path = wxEmptyString;
        }
        else
    	{
            m_Path.Remove(pathpos+1);
        }
    }
}


wxFSFile* wxFileSystem::OpenFile(const wxString& location)
{
    wxString loc = MakeCorrectPath(location);
    unsigned i, ln;
    char meta;
    wxFSFile *s = NULL;
    wxNode *node;

    ln = loc.Length();
    meta = 0;
    for (i = 0; i < ln; i++)
    {
        if (!meta)
            switch (loc[i])
        	{
                case wxT('/') : case wxT(':') : case wxT('#') : meta = loc[i];
            }
    }
    m_LastName = wxEmptyString;

    // try relative paths first :
    if (meta != wxT(':'))
    {
        node = m_Handlers.GetFirst();
        while (node)
    	{
            wxFileSystemHandler *h = (wxFileSystemHandler*) node -> GetData();
            if (h->CanOpen(m_Path + loc))
	        {
                s = h->OpenFile(*this, m_Path + loc);
                if (s) { m_LastName = m_Path + loc; break; }
            }
            node = node->GetNext();
        }
    }

    // if failed, try absolute paths :
    if (s == NULL)
    {
        node = m_Handlers.GetFirst();
        while (node)
    	{
            wxFileSystemHandler *h = (wxFileSystemHandler*) node->GetData();
            if (h->CanOpen(loc))
    	    {
                s = h->OpenFile(*this, loc);
                if (s) { m_LastName = loc; break; }
            }
            node = node->GetNext();
        }
    }
    return (s);
}


wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
{
    wxNode *node;
    wxString spec2(spec);

    m_FindFileHandler = NULL;

    for (int i = spec2.Length()-1; i >= 0; i--)
        if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe

    node = m_Handlers.GetFirst();
    while (node)
    {
        m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
        if (m_FindFileHandler -> CanOpen(m_Path + spec2))
            return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
        node = node->GetNext();
    }

    node = m_Handlers.GetFirst();
    while (node)
    {
        m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
        if (m_FindFileHandler -> CanOpen(spec2))
            return m_FindFileHandler -> FindFirst(spec2, flags);
        node = node->GetNext();
    }

    return wxEmptyString;
}


wxString wxFileSystem::FindNext()
{
    if (m_FindFileHandler == NULL) return wxEmptyString;
    else return m_FindFileHandler -> FindNext();
}


void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
{
    m_Handlers.Append(handler);
}


void wxFileSystem::CleanUpHandlers()
{
    m_Handlers.DeleteContents(TRUE);
    m_Handlers.Clear();
}


///// Module:

class wxFileSystemModule : public wxModule
{
    DECLARE_DYNAMIC_CLASS(wxFileSystemModule)

    public:
        virtual bool OnInit()
        {
            wxFileSystem::AddHandler(new wxLocalFSHandler);
            return TRUE;
        }
        virtual void OnExit()
    	{
            wxFileSystem::CleanUpHandlers();
    	}
};

IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)

#endif
  // wxUSE_FILESYSTEM
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: filesys.cpp
	3	// Purpose: wxFileSystem class - interface for opening files
	4	// Author: Vaclav Slavik
	5	// Copyright: (c) 1999 Vaclav Slavik
	6	// CVS-ID: $Id$
	7	// Licence: wxWindows Licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
	16	#ifdef __BORDLANDC__
	17	#pragma hdrstop
	18	#endif
	19
	20
	21	#if wxUSE_FILESYSTEM
	22
	23	#include "wx/wfstream.h"
	24	#include "wx/module.h"
	25	#include "wx/filesys.h"
	26	#include "wx/mimetype.h"
	27
	28
	29
	30
	31	//--------------------------------------------------------------------------------
	32	// wxFileSystemHandler
	33	//--------------------------------------------------------------------------------
	34
	35	IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject)
	36
	37
	38	wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location)
	39	{
	40	wxString ext = wxEmptyString, mime = wxEmptyString;
	41	wxString loc = GetRightLocation(location);
	42	char c;
	43	int l = loc.Length(), l2;
	44	wxFileType *ft;
	45
	46	l2 = l;
	47	for (int i = l-1; i >= 0; i--) {
	48	c = loc[(unsigned int) i];
	49	if (c == wxT('#')) l2 = i + 1;
	50	if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;}
	51	if ((c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) {return wxEmptyString;}
	52	}
	53
	54	static bool s_MinimalMimeEnsured = FALSE;
	55	if (!s_MinimalMimeEnsured) {
	56	static const wxFileTypeInfo fallbacks[] =
	57	{
	58	wxFileTypeInfo("image/jpeg",
	59	"",
	60	"",
	61	"JPEG image (from fallback)",
	62	"jpg", "jpeg", NULL),
	63	wxFileTypeInfo("image/gif",
	64	"",
	65	"",
	66	"GIF image (from fallback)",
	67	"gif", NULL),
	68	wxFileTypeInfo("image/png",
	69	"",
	70	"",
	71	"PNG image (from fallback)",
	72	"png", NULL),
	73	wxFileTypeInfo("image/bmp",
	74	"",
	75	"",
	76	"windows bitmap image (from fallback)",
	77	"bmp", NULL),
	78	wxFileTypeInfo("text/html",
	79	"",
	80	"",
	81	"HTML document (from fallback)",
	82	"htm", "html", NULL),
	83
	84	// must terminate the table with this!
	85	wxFileTypeInfo()
	86	};
	87
	88	wxTheMimeTypesManager -> AddFallbacks(fallbacks);
	89	}
	90
	91	ft = wxTheMimeTypesManager -> GetFileTypeFromExtension(ext);
	92	if (ft && (ft -> GetMimeType(&mime))) {
	93	delete ft;
	94	return mime;
	95	}
	96	else {
	97	delete ft;
	98	return wxEmptyString;
	99	}
	100	}
	101
	102
	103
	104	wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
	105	{
	106	wxString s = wxEmptyString;
	107	int i, l = location.Length();
	108	bool fnd;
	109
	110	fnd = FALSE;
	111	for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) \|\| (!fnd)); i--) {
	112	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	113	}
	114	if (!fnd) return wxT("file");
	115	for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
	116	return s;
	117	}
	118
	119
	120	wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
	121	{
	122	int i;
	123	bool fnd;
	124
	125	fnd = FALSE;
	126	for (i = location.Length()-1; i >= 0; i--) {
	127	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	128	else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
	129	}
	130	return wxEmptyString;
	131	}
	132
	133	wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
	134	{
	135	int i, l = location.Length();
	136	int l2 = l + 1;
	137	for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) \|\| (i == 1) \|\| (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;}
	138	if (i == 0) return wxEmptyString;
	139	else return location.Mid(i + 1, l2 - i - 2);
	140	}
	141
	142	wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
	143	{
	144	char c;
	145	int l = location.Length();
	146
	147	for (int i = l-1; i >= 0; i--) {
	148	c = location[i];
	149	if (c == wxT('#')) return location.Right(l-i-1);
	150	else if ((c == wxT('.')) \|\| (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) return wxEmptyString;
	151	}
	152	return wxEmptyString;
	153	}
	154
	155
	156	wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
	157	int WXUNUSED(flags))
	158	{
	159	return wxEmptyString;
	160	}
	161
	162	wxString wxFileSystemHandler::FindNext()
	163	{
	164	return wxEmptyString;
	165	}
	166
	167	//--------------------------------------------------------------------------------
	168	// wxLocalFSHandler
	169	//--------------------------------------------------------------------------------
	170
	171	class wxLocalFSHandler : public wxFileSystemHandler
	172	{
	173	public:
	174	virtual bool CanOpen(const wxString& location);
	175	virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
	176	virtual wxString FindFirst(const wxString& spec, int flags = 0);
	177	virtual wxString FindNext();
	178	};
	179
	180
	181	bool wxLocalFSHandler::CanOpen(const wxString& location)
	182	{
	183	return GetProtocol(location) == wxT("file");
	184	}
	185
	186	wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
	187	{
	188	wxString right = GetRightLocation(location);
	189	if (wxFileExists(right))
	190	return new wxFSFile(new wxFileInputStream(right),
	191	right,
	192	GetMimeTypeFromExt(location),
	193	GetAnchor(location),
	194	wxDateTime(wxFileModificationTime(right)));
	195	else return (wxFSFile*) NULL;
	196	}
	197
	198	wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
	199	{
	200	wxString right = GetRightLocation(spec);
	201	return wxFindFirstFile(right, flags);
	202	}
	203
	204	wxString wxLocalFSHandler::FindNext()
	205	{
	206	return wxFindNextFile();
	207	}
	208
	209
	210
	211	//-----------------------------------------------------------------------------
	212	// wxFileSystem
	213	//-----------------------------------------------------------------------------
	214
	215	IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
	216
	217
	218	wxList wxFileSystem::m_Handlers;
	219
	220
	221	static wxString MakeCorrectPath(const wxString& path)
	222	{
	223	wxString p(path);
	224	wxString r;
	225	int i, j, cnt;
	226
	227	cnt = p.Length();
	228	for (i = 0; i < cnt; i++)
	229	if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	230
	231	if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }
	232
	233	if (cnt < 3) return p;
	234
	235	r << p.GetChar(0) << p.GetChar(1);
	236
	237	// skip trailing ../.., if any
	238	for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') \|\| p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);
	239
	240	// remove back references: translate dir1/../dir2 to dir2
	241	for (; i < cnt; i++)
	242	{
	243	r << p.GetChar(i);
	244	if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
	245	{
	246	for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	247	if (j >= 0 && r.GetChar(j) != wxT(':'))
	248	{
	249	for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	250	r.Remove(j + 1);
	251	}
	252	}
	253	}
	254
	255	for (; i < cnt; i++) r << p.GetChar(i);
	256
	257	return r;
	258	}
	259
	260
	261	void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
	262	{
	263	int i, pathpos = -1;
	264
	265	m_Path = MakeCorrectPath(location);
	266
	267	if (is_dir)
	268	{
	269	if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	270	m_Path << wxT('/');
	271	}
	272
	273	else
	274	{
	275	for (i = m_Path.Length()-1; i >= 0; i--)
	276	{
	277	if (m_Path[(unsigned int) i] == wxT('/'))
	278	{
	279	if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
	280	{
	281	i -= 2;
	282	continue;
	283	}
	284	else
	285	{
	286	pathpos = i;
	287	break;
	288	}
	289	}
	290	else if (m_Path[(unsigned int) i] == wxT(':')) {
	291	pathpos = i;
	292	break;
	293	}
	294	}
	295	if (pathpos == -1)
	296	{
	297	for (i = 0; i < (int) m_Path.Length(); i++)
	298	{
	299	if (m_Path[(unsigned int) i] == wxT(':'))
	300	{
	301	m_Path.Remove(i+1);
	302	break;
	303	}
	304	}
	305	if (i == (int) m_Path.Length())
	306	m_Path = wxEmptyString;
	307	}
	308	else
	309	{
	310	m_Path.Remove(pathpos+1);
	311	}
	312	}
	313	}
	314
	315
	316
	317	wxFSFile* wxFileSystem::OpenFile(const wxString& location)
	318	{
	319	wxString loc = MakeCorrectPath(location);
	320	unsigned i, ln;
	321	char meta;
	322	wxFSFile *s = NULL;
	323	wxNode *node;
	324
	325	ln = loc.Length();
	326	meta = 0;
	327	for (i = 0; i < ln; i++)
	328	{
	329	if (!meta)
	330	switch (loc[i])
	331	{
	332	case wxT('/') : case wxT(':') : case wxT('#') : meta = loc[i];
	333	}
	334	}
	335	m_LastName = wxEmptyString;
	336
	337	// try relative paths first :
	338	if (meta != wxT(':'))
	339	{
	340	node = m_Handlers.GetFirst();
	341	while (node)
	342	{
	343	wxFileSystemHandler h = (wxFileSystemHandler) node -> GetData();
	344	if (h->CanOpen(m_Path + loc))
	345	{
	346	s = h->OpenFile(*this, m_Path + loc);
	347	if (s) { m_LastName = m_Path + loc; break; }
	348	}
	349	node = node->GetNext();
	350	}
	351	}
	352
	353	// if failed, try absolute paths :
	354	if (s == NULL)
	355	{
	356	node = m_Handlers.GetFirst();
	357	while (node)
	358	{
	359	wxFileSystemHandler h = (wxFileSystemHandler) node->GetData();
	360	if (h->CanOpen(loc))
	361	{
	362	s = h->OpenFile(*this, loc);
	363	if (s) { m_LastName = loc; break; }
	364	}
	365	node = node->GetNext();
	366	}
	367	}
	368	return (s);
	369	}
	370
	371
	372
	373	wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
	374	{
	375	wxNode *node;
	376	wxString spec2(spec);
	377
	378	m_FindFileHandler = NULL;
	379
	380	for (int i = spec2.Length()-1; i >= 0; i--)
	381	if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	382
	383	node = m_Handlers.GetFirst();
	384	while (node)
	385	{
	386	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	387	if (m_FindFileHandler -> CanOpen(m_Path + spec2))
	388	return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
	389	node = node->GetNext();
	390	}
	391
	392	node = m_Handlers.GetFirst();
	393	while (node)
	394	{
	395	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	396	if (m_FindFileHandler -> CanOpen(spec2))
	397	return m_FindFileHandler -> FindFirst(spec2, flags);
	398	node = node->GetNext();
	399	}
	400
	401	return wxEmptyString;
	402	}
	403
	404
	405
	406	wxString wxFileSystem::FindNext()
	407	{
	408	if (m_FindFileHandler == NULL) return wxEmptyString;
	409	else return m_FindFileHandler -> FindNext();
	410	}
	411
	412
	413
	414	void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
	415	{
	416	m_Handlers.Append(handler);
	417	}
	418
	419
	420	void wxFileSystem::CleanUpHandlers()
	421	{
	422	m_Handlers.DeleteContents(TRUE);
	423	m_Handlers.Clear();
	424	}
	425
	426
	427
	428
	429	///// Module:
	430
	431	class wxFileSystemModule : public wxModule
	432	{
	433	DECLARE_DYNAMIC_CLASS(wxFileSystemModule)
	434
	435	public:
	436	virtual bool OnInit()
	437	{
	438	wxFileSystem::AddHandler(new wxLocalFSHandler);
	439	return TRUE;
	440	}
	441	virtual void OnExit()
	442	{
	443	wxFileSystem::CleanUpHandlers();
	444	}
	445	};
	446
	447	IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)
	448
	449	#endif
	450	// wxUSE_FILESYSTEM
	451
	452
	453