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)


static wxFileTypeInfo *gs_FSMimeFallbacks = NULL;

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) {
        wxTheMimeTypesManager -> AddFallbacks(gs_FSMimeFallbacks);
        s_MinimalMimeEnsured = TRUE;
    }

    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);

            gs_FSMimeFallbacks = new wxFileTypeInfo[6];
            gs_FSMimeFallbacks[0] =
            wxFileTypeInfo("image/jpeg",
                           "",
                           "",
                           "JPEG image (from fallback)",
                           "jpg", "jpeg", NULL);
            gs_FSMimeFallbacks[1] =
            wxFileTypeInfo("image/gif",
                           "",
                           "",
                           "GIF image (from fallback)",
                           "gif", NULL);
            gs_FSMimeFallbacks[2] =
            wxFileTypeInfo("image/png",
                           "",
                           "",
                           "PNG image (from fallback)",
                           "png", NULL);
            gs_FSMimeFallbacks[3] =
            wxFileTypeInfo("image/bmp",
                           "",
                           "",
                           "windows bitmap image (from fallback)",
                           "bmp", NULL);
            gs_FSMimeFallbacks[4] =
            wxFileTypeInfo("text/html",
                           "",
                           "",
                           "HTML document (from fallback)",
                           "htm", "html", NULL);
            gs_FSMimeFallbacks[5] =
            // must terminate the table with this!
            wxFileTypeInfo();

            return TRUE;
        }
        virtual void OnExit()
    	{
            delete [] gs_FSMimeFallbacks;
            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	static wxFileTypeInfo *gs_FSMimeFallbacks = NULL;
	39
	40	wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location)
	41	{
	42	wxString ext = wxEmptyString, mime = wxEmptyString;
	43	wxString loc = GetRightLocation(location);
	44	char c;
	45	int l = loc.Length(), l2;
	46	wxFileType *ft;
	47
	48	l2 = l;
	49	for (int i = l-1; i >= 0; i--) {
	50	c = loc[(unsigned int) i];
	51	if (c == wxT('#')) l2 = i + 1;
	52	if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;}
	53	if ((c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) {return wxEmptyString;}
	54	}
	55
	56	static bool s_MinimalMimeEnsured = FALSE;
	57	if (!s_MinimalMimeEnsured) {
	58	wxTheMimeTypesManager -> AddFallbacks(gs_FSMimeFallbacks);
	59	s_MinimalMimeEnsured = TRUE;
	60	}
	61
	62	ft = wxTheMimeTypesManager -> GetFileTypeFromExtension(ext);
	63	if ( !ft \|\| !ft -> GetMimeType(&mime) ) {
	64	mime = wxEmptyString;
	65	}
	66
	67	delete ft;
	68
	69	return mime;
	70	}
	71
	72
	73
	74	wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
	75	{
	76	wxString s = wxEmptyString;
	77	int i, l = location.Length();
	78	bool fnd;
	79
	80	fnd = FALSE;
	81	for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) \|\| (!fnd)); i--) {
	82	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	83	}
	84	if (!fnd) return wxT("file");
	85	for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
	86	return s;
	87	}
	88
	89
	90	wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
	91	{
	92	int i;
	93	bool fnd;
	94
	95	fnd = FALSE;
	96	for (i = location.Length()-1; i >= 0; i--) {
	97	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	98	else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
	99	}
	100	return wxEmptyString;
	101	}
	102
	103	wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
	104	{
	105	int i, l = location.Length();
	106	int l2 = l + 1;
	107	for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) \|\| (i == 1) \|\| (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;}
	108	if (i == 0) return wxEmptyString;
	109	else return location.Mid(i + 1, l2 - i - 2);
	110	}
	111
	112	wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
	113	{
	114	char c;
	115	int l = location.Length();
	116
	117	for (int i = l-1; i >= 0; i--) {
	118	c = location[i];
	119	if (c == wxT('#')) return location.Right(l-i-1);
	120	else if ((c == wxT('.')) \|\| (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) return wxEmptyString;
	121	}
	122	return wxEmptyString;
	123	}
	124
	125
	126	wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
	127	int WXUNUSED(flags))
	128	{
	129	return wxEmptyString;
	130	}
	131
	132	wxString wxFileSystemHandler::FindNext()
	133	{
	134	return wxEmptyString;
	135	}
	136
	137	//--------------------------------------------------------------------------------
	138	// wxLocalFSHandler
	139	//--------------------------------------------------------------------------------
	140
	141	class wxLocalFSHandler : public wxFileSystemHandler
	142	{
	143	public:
	144	virtual bool CanOpen(const wxString& location);
	145	virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
	146	virtual wxString FindFirst(const wxString& spec, int flags = 0);
	147	virtual wxString FindNext();
	148	};
	149
	150
	151	bool wxLocalFSHandler::CanOpen(const wxString& location)
	152	{
	153	return GetProtocol(location) == wxT("file");
	154	}
	155
	156	wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
	157	{
	158	wxString right = GetRightLocation(location);
	159	if (!wxFileExists(right))
	160	return (wxFSFile*) NULL;
	161
	162	return new wxFSFile(new wxFileInputStream(right),
	163	right,
	164	GetMimeTypeFromExt(location),
	165	GetAnchor(location),
	166	wxDateTime(wxFileModificationTime(right)));
	167
	168	}
	169
	170	wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
	171	{
	172	wxString right = GetRightLocation(spec);
	173	return wxFindFirstFile(right, flags);
	174	}
	175
	176	wxString wxLocalFSHandler::FindNext()
	177	{
	178	return wxFindNextFile();
	179	}
	180
	181
	182
	183	//-----------------------------------------------------------------------------
	184	// wxFileSystem
	185	//-----------------------------------------------------------------------------
	186
	187	IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
	188
	189
	190	wxList wxFileSystem::m_Handlers;
	191
	192
	193	static wxString MakeCorrectPath(const wxString& path)
	194	{
	195	wxString p(path);
	196	wxString r;
	197	int i, j, cnt;
	198
	199	cnt = p.Length();
	200	for (i = 0; i < cnt; i++)
	201	if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	202
	203	if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }
	204
	205	if (cnt < 3) return p;
	206
	207	r << p.GetChar(0) << p.GetChar(1);
	208
	209	// skip trailing ../.., if any
	210	for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') \|\| p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);
	211
	212	// remove back references: translate dir1/../dir2 to dir2
	213	for (; i < cnt; i++)
	214	{
	215	r << p.GetChar(i);
	216	if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
	217	{
	218	for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	219	if (j >= 0 && r.GetChar(j) != wxT(':'))
	220	{
	221	for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	222	r.Remove(j + 1);
	223	}
	224	}
	225	}
	226
	227	for (; i < cnt; i++) r << p.GetChar(i);
	228
	229	return r;
	230	}
	231
	232
	233	void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
	234	{
	235	int i, pathpos = -1;
	236
	237	m_Path = MakeCorrectPath(location);
	238
	239	if (is_dir)
	240	{
	241	if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	242	m_Path << wxT('/');
	243	}
	244
	245	else
	246	{
	247	for (i = m_Path.Length()-1; i >= 0; i--)
	248	{
	249	if (m_Path[(unsigned int) i] == wxT('/'))
	250	{
	251	if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
	252	{
	253	i -= 2;
	254	continue;
	255	}
	256	else
	257	{
	258	pathpos = i;
	259	break;
	260	}
	261	}
	262	else if (m_Path[(unsigned int) i] == wxT(':')) {
	263	pathpos = i;
	264	break;
	265	}
	266	}
	267	if (pathpos == -1)
	268	{
	269	for (i = 0; i < (int) m_Path.Length(); i++)
	270	{
	271	if (m_Path[(unsigned int) i] == wxT(':'))
	272	{
	273	m_Path.Remove(i+1);
	274	break;
	275	}
	276	}
	277	if (i == (int) m_Path.Length())
	278	m_Path = wxEmptyString;
	279	}
	280	else
	281	{
	282	m_Path.Remove(pathpos+1);
	283	}
	284	}
	285	}
	286
	287
	288
	289	wxFSFile* wxFileSystem::OpenFile(const wxString& location)
	290	{
	291	wxString loc = MakeCorrectPath(location);
	292	unsigned i, ln;
	293	char meta;
	294	wxFSFile *s = NULL;
	295	wxNode *node;
	296
	297	ln = loc.Length();
	298	meta = 0;
	299	for (i = 0; i < ln; i++)
	300	{
	301	switch (loc[i])
	302	{
	303	case wxT('/') : case wxT(':') : case wxT('#') :
	304	meta = loc[i];
	305	break;
	306	}
	307	if (meta != 0) break;
	308	}
	309	m_LastName = wxEmptyString;
	310
	311	// try relative paths first :
	312	if (meta != wxT(':'))
	313	{
	314	node = m_Handlers.GetFirst();
	315	while (node)
	316	{
	317	wxFileSystemHandler h = (wxFileSystemHandler) node -> GetData();
	318	if (h->CanOpen(m_Path + loc))
	319	{
	320	s = h->OpenFile(*this, m_Path + loc);
	321	if (s) { m_LastName = m_Path + loc; break; }
	322	}
	323	node = node->GetNext();
	324	}
	325	}
	326
	327	// if failed, try absolute paths :
	328	if (s == NULL)
	329	{
	330	node = m_Handlers.GetFirst();
	331	while (node)
	332	{
	333	wxFileSystemHandler h = (wxFileSystemHandler) node->GetData();
	334	if (h->CanOpen(loc))
	335	{
	336	s = h->OpenFile(*this, loc);
	337	if (s) { m_LastName = loc; break; }
	338	}
	339	node = node->GetNext();
	340	}
	341	}
	342	return (s);
	343	}
	344
	345
	346
	347	wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
	348	{
	349	wxNode *node;
	350	wxString spec2(spec);
	351
	352	m_FindFileHandler = NULL;
	353
	354	for (int i = spec2.Length()-1; i >= 0; i--)
	355	if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	356
	357	node = m_Handlers.GetFirst();
	358	while (node)
	359	{
	360	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	361	if (m_FindFileHandler -> CanOpen(m_Path + spec2))
	362	return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
	363	node = node->GetNext();
	364	}
	365
	366	node = m_Handlers.GetFirst();
	367	while (node)
	368	{
	369	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	370	if (m_FindFileHandler -> CanOpen(spec2))
	371	return m_FindFileHandler -> FindFirst(spec2, flags);
	372	node = node->GetNext();
	373	}
	374
	375	return wxEmptyString;
	376	}
	377
	378
	379
	380	wxString wxFileSystem::FindNext()
	381	{
	382	if (m_FindFileHandler == NULL) return wxEmptyString;
	383	else return m_FindFileHandler -> FindNext();
	384	}
	385
	386
	387
	388	void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
	389	{
	390	m_Handlers.Append(handler);
	391	}
	392
	393
	394	void wxFileSystem::CleanUpHandlers()
	395	{
	396	m_Handlers.DeleteContents(TRUE);
	397	m_Handlers.Clear();
	398	}
	399
	400
	401
	402
	403	///// Module:
	404
	405	class wxFileSystemModule : public wxModule
	406	{
	407	DECLARE_DYNAMIC_CLASS(wxFileSystemModule)
	408
	409	public:
	410	virtual bool OnInit()
	411	{
	412	wxFileSystem::AddHandler(new wxLocalFSHandler);
	413
	414	gs_FSMimeFallbacks = new wxFileTypeInfo[6];
	415	gs_FSMimeFallbacks[0] =
	416	wxFileTypeInfo("image/jpeg",
	417	"",
	418	"",
	419	"JPEG image (from fallback)",
	420	"jpg", "jpeg", NULL);
	421	gs_FSMimeFallbacks[1] =
	422	wxFileTypeInfo("image/gif",
	423	"",
	424	"",
	425	"GIF image (from fallback)",
	426	"gif", NULL);
	427	gs_FSMimeFallbacks[2] =
	428	wxFileTypeInfo("image/png",
	429	"",
	430	"",
	431	"PNG image (from fallback)",
	432	"png", NULL);
	433	gs_FSMimeFallbacks[3] =
	434	wxFileTypeInfo("image/bmp",
	435	"",
	436	"",
	437	"windows bitmap image (from fallback)",
	438	"bmp", NULL);
	439	gs_FSMimeFallbacks[4] =
	440	wxFileTypeInfo("text/html",
	441	"",
	442	"",
	443	"HTML document (from fallback)",
	444	"htm", "html", NULL);
	445	gs_FSMimeFallbacks[5] =
	446	// must terminate the table with this!
	447	wxFileTypeInfo();
	448
	449	return TRUE;
	450	}
	451	virtual void OnExit()
	452	{
	453	delete [] gs_FSMimeFallbacks;
	454	wxFileSystem::CleanUpHandlers();
	455	}
	456	};
	457
	458	IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)
	459
	460	#endif
	461	// wxUSE_FILESYSTEM
	462
	463
	464