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) ) {
        mime = wxEmptyString;
    }

    delete ft;

    return mime;
}


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 (wxFSFile*) NULL;

    return new wxFSFile(new wxFileInputStream(right),
                        right,
                        GetMimeTypeFromExt(location),
                        GetAnchor(location),
                        wxDateTime(wxFileModificationTime(right)));

}

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++)
    {
        switch (loc[i])
        {
            case wxT('/') : case wxT(':') : case wxT('#') :
                meta = loc[i];
                break;
        }
        if (meta != 0) break;
    }
    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	mime = wxEmptyString;
	94	}
	95
	96	delete ft;
	97
	98	return mime;
	99	}
	100
	101
	102
	103	wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
	104	{
	105	wxString s = wxEmptyString;
	106	int i, l = location.Length();
	107	bool fnd;
	108
	109	fnd = FALSE;
	110	for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) \|\| (!fnd)); i--) {
	111	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	112	}
	113	if (!fnd) return wxT("file");
	114	for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
	115	return s;
	116	}
	117
	118
	119	wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
	120	{
	121	int i;
	122	bool fnd;
	123
	124	fnd = FALSE;
	125	for (i = location.Length()-1; i >= 0; i--) {
	126	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	127	else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
	128	}
	129	return wxEmptyString;
	130	}
	131
	132	wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
	133	{
	134	int i, l = location.Length();
	135	int l2 = l + 1;
	136	for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) \|\| (i == 1) \|\| (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;}
	137	if (i == 0) return wxEmptyString;
	138	else return location.Mid(i + 1, l2 - i - 2);
	139	}
	140
	141	wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
	142	{
	143	char c;
	144	int l = location.Length();
	145
	146	for (int i = l-1; i >= 0; i--) {
	147	c = location[i];
	148	if (c == wxT('#')) return location.Right(l-i-1);
	149	else if ((c == wxT('.')) \|\| (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) return wxEmptyString;
	150	}
	151	return wxEmptyString;
	152	}
	153
	154
	155	wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
	156	int WXUNUSED(flags))
	157	{
	158	return wxEmptyString;
	159	}
	160
	161	wxString wxFileSystemHandler::FindNext()
	162	{
	163	return wxEmptyString;
	164	}
	165
	166	//--------------------------------------------------------------------------------
	167	// wxLocalFSHandler
	168	//--------------------------------------------------------------------------------
	169
	170	class wxLocalFSHandler : public wxFileSystemHandler
	171	{
	172	public:
	173	virtual bool CanOpen(const wxString& location);
	174	virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
	175	virtual wxString FindFirst(const wxString& spec, int flags = 0);
	176	virtual wxString FindNext();
	177	};
	178
	179
	180	bool wxLocalFSHandler::CanOpen(const wxString& location)
	181	{
	182	return GetProtocol(location) == wxT("file");
	183	}
	184
	185	wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
	186	{
	187	wxString right = GetRightLocation(location);
	188	if (!wxFileExists(right))
	189	return (wxFSFile*) NULL;
	190
	191	return new wxFSFile(new wxFileInputStream(right),
	192	right,
	193	GetMimeTypeFromExt(location),
	194	GetAnchor(location),
	195	wxDateTime(wxFileModificationTime(right)));
	196
	197	}
	198
	199	wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
	200	{
	201	wxString right = GetRightLocation(spec);
	202	return wxFindFirstFile(right, flags);
	203	}
	204
	205	wxString wxLocalFSHandler::FindNext()
	206	{
	207	return wxFindNextFile();
	208	}
	209
	210
	211
	212	//-----------------------------------------------------------------------------
	213	// wxFileSystem
	214	//-----------------------------------------------------------------------------
	215
	216	IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
	217
	218
	219	wxList wxFileSystem::m_Handlers;
	220
	221
	222	static wxString MakeCorrectPath(const wxString& path)
	223	{
	224	wxString p(path);
	225	wxString r;
	226	int i, j, cnt;
	227
	228	cnt = p.Length();
	229	for (i = 0; i < cnt; i++)
	230	if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	231
	232	if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }
	233
	234	if (cnt < 3) return p;
	235
	236	r << p.GetChar(0) << p.GetChar(1);
	237
	238	// skip trailing ../.., if any
	239	for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') \|\| p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);
	240
	241	// remove back references: translate dir1/../dir2 to dir2
	242	for (; i < cnt; i++)
	243	{
	244	r << p.GetChar(i);
	245	if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
	246	{
	247	for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	248	if (j >= 0 && r.GetChar(j) != wxT(':'))
	249	{
	250	for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	251	r.Remove(j + 1);
	252	}
	253	}
	254	}
	255
	256	for (; i < cnt; i++) r << p.GetChar(i);
	257
	258	return r;
	259	}
	260
	261
	262	void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
	263	{
	264	int i, pathpos = -1;
	265
	266	m_Path = MakeCorrectPath(location);
	267
	268	if (is_dir)
	269	{
	270	if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	271	m_Path << wxT('/');
	272	}
	273
	274	else
	275	{
	276	for (i = m_Path.Length()-1; i >= 0; i--)
	277	{
	278	if (m_Path[(unsigned int) i] == wxT('/'))
	279	{
	280	if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
	281	{
	282	i -= 2;
	283	continue;
	284	}
	285	else
	286	{
	287	pathpos = i;
	288	break;
	289	}
	290	}
	291	else if (m_Path[(unsigned int) i] == wxT(':')) {
	292	pathpos = i;
	293	break;
	294	}
	295	}
	296	if (pathpos == -1)
	297	{
	298	for (i = 0; i < (int) m_Path.Length(); i++)
	299	{
	300	if (m_Path[(unsigned int) i] == wxT(':'))
	301	{
	302	m_Path.Remove(i+1);
	303	break;
	304	}
	305	}
	306	if (i == (int) m_Path.Length())
	307	m_Path = wxEmptyString;
	308	}
	309	else
	310	{
	311	m_Path.Remove(pathpos+1);
	312	}
	313	}
	314	}
	315
	316
	317
	318	wxFSFile* wxFileSystem::OpenFile(const wxString& location)
	319	{
	320	wxString loc = MakeCorrectPath(location);
	321	unsigned i, ln;
	322	char meta;
	323	wxFSFile *s = NULL;
	324	wxNode *node;
	325
	326	ln = loc.Length();
	327	meta = 0;
	328	for (i = 0; i < ln; i++)
	329	{
	330	switch (loc[i])
	331	{
	332	case wxT('/') : case wxT(':') : case wxT('#') :
	333	meta = loc[i];
	334	break;
	335	}
	336	if (meta != 0) break;
	337	}
	338	m_LastName = wxEmptyString;
	339
	340	// try relative paths first :
	341	if (meta != wxT(':'))
	342	{
	343	node = m_Handlers.GetFirst();
	344	while (node)
	345	{
	346	wxFileSystemHandler h = (wxFileSystemHandler) node -> GetData();
	347	if (h->CanOpen(m_Path + loc))
	348	{
	349	s = h->OpenFile(*this, m_Path + loc);
	350	if (s) { m_LastName = m_Path + loc; break; }
	351	}
	352	node = node->GetNext();
	353	}
	354	}
	355
	356	// if failed, try absolute paths :
	357	if (s == NULL)
	358	{
	359	node = m_Handlers.GetFirst();
	360	while (node)
	361	{
	362	wxFileSystemHandler h = (wxFileSystemHandler) node->GetData();
	363	if (h->CanOpen(loc))
	364	{
	365	s = h->OpenFile(*this, loc);
	366	if (s) { m_LastName = loc; break; }
	367	}
	368	node = node->GetNext();
	369	}
	370	}
	371	return (s);
	372	}
	373
	374
	375
	376	wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
	377	{
	378	wxNode *node;
	379	wxString spec2(spec);
	380
	381	m_FindFileHandler = NULL;
	382
	383	for (int i = spec2.Length()-1; i >= 0; i--)
	384	if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	385
	386	node = m_Handlers.GetFirst();
	387	while (node)
	388	{
	389	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	390	if (m_FindFileHandler -> CanOpen(m_Path + spec2))
	391	return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
	392	node = node->GetNext();
	393	}
	394
	395	node = m_Handlers.GetFirst();
	396	while (node)
	397	{
	398	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	399	if (m_FindFileHandler -> CanOpen(spec2))
	400	return m_FindFileHandler -> FindFirst(spec2, flags);
	401	node = node->GetNext();
	402	}
	403
	404	return wxEmptyString;
	405	}
	406
	407
	408
	409	wxString wxFileSystem::FindNext()
	410	{
	411	if (m_FindFileHandler == NULL) return wxEmptyString;
	412	else return m_FindFileHandler -> FindNext();
	413	}
	414
	415
	416
	417	void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
	418	{
	419	m_Handlers.Append(handler);
	420	}
	421
	422
	423	void wxFileSystem::CleanUpHandlers()
	424	{
	425	m_Handlers.DeleteContents(TRUE);
	426	m_Handlers.Clear();
	427	}
	428
	429
	430
	431
	432	///// Module:
	433
	434	class wxFileSystemModule : public wxModule
	435	{
	436	DECLARE_DYNAMIC_CLASS(wxFileSystemModule)
	437
	438	public:
	439	virtual bool OnInit()
	440	{
	441	wxFileSystem::AddHandler(new wxLocalFSHandler);
	442	return TRUE;
	443	}
	444	virtual void OnExit()
	445	{
	446	wxFileSystem::CleanUpHandlers();
	447	}
	448	};
	449
	450	IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)
	451
	452	#endif
	453	// wxUSE_FILESYSTEM
	454
	455
	456