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_SOCKETS
    #undef wxUSE_FS_INET
    #define wxUSE_FS_INET 0
#endif

#if (wxUSE_HTML || wxUSE_FS_INET || wxUSE_FS_ZIP) && wxUSE_STREAMS

#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_FS_INET || wxUSE_FS_ZIP) && wxUSE_STREAMS
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	#if !wxUSE_SOCKETS
	21	#undef wxUSE_FS_INET
	22	#define wxUSE_FS_INET 0
	23	#endif
	24
	25	#if (wxUSE_HTML \|\| wxUSE_FS_INET \|\| wxUSE_FS_ZIP) && wxUSE_STREAMS
	26
	27	#include "wx/wfstream.h"
	28	#include "wx/module.h"
	29	#include "wx/filesys.h"
	30	#include "wx/mimetype.h"
	31
	32
	33
	34
	35	//--------------------------------------------------------------------------------
	36	// wxFileSystemHandler
	37	//--------------------------------------------------------------------------------
	38
	39	IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject)
	40
	41
	42	wxString wxFileSystemHandler::GetMimeTypeFromExt(const wxString& location)
	43	{
	44	wxString ext = wxEmptyString, mime = wxEmptyString;
	45	wxString loc = GetRightLocation(location);
	46	char c;
	47	int l = loc.Length(), l2;
	48	wxFileType *ft;
	49
	50	l2 = l;
	51	for (int i = l-1; i >= 0; i--) {
	52	c = loc[(unsigned int) i];
	53	if (c == wxT('#')) l2 = i + 1;
	54	if (c == wxT('.')) {ext = loc.Right(l2-i-1); break;}
	55	if ((c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) {return wxEmptyString;}
	56	}
	57
	58	static bool s_MinimalMimeEnsured = FALSE;
	59	if (!s_MinimalMimeEnsured) {
	60	static const wxFileTypeInfo fallbacks[] =
	61	{
	62	wxFileTypeInfo("image/jpeg",
	63	"",
	64	"",
	65	"JPEG image (from fallback)",
	66	"jpg", "jpeg", NULL),
	67	wxFileTypeInfo("image/gif",
	68	"",
	69	"",
	70	"GIF image (from fallback)",
	71	"gif", NULL),
	72	wxFileTypeInfo("image/png",
	73	"",
	74	"",
	75	"PNG image (from fallback)",
	76	"png", NULL),
	77	wxFileTypeInfo("image/bmp",
	78	"",
	79	"",
	80	"windows bitmap image (from fallback)",
	81	"bmp", NULL),
	82	wxFileTypeInfo("text/html",
	83	"",
	84	"",
	85	"HTML document (from fallback)",
	86	"htm", "html", NULL),
	87
	88	// must terminate the table with this!
	89	wxFileTypeInfo()
	90	};
	91
	92	wxTheMimeTypesManager -> AddFallbacks(fallbacks);
	93	}
	94
	95	ft = wxTheMimeTypesManager -> GetFileTypeFromExtension(ext);
	96	if (ft && (ft -> GetMimeType(&mime))) {
	97	delete ft;
	98	return mime;
	99	}
	100	else {
	101	delete ft;
	102	return wxEmptyString;
	103	}
	104	}
	105
	106
	107
	108	wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
	109	{
	110	wxString s = wxEmptyString;
	111	int i, l = location.Length();
	112	bool fnd;
	113
	114	fnd = FALSE;
	115	for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) \|\| (!fnd)); i--) {
	116	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	117	}
	118	if (!fnd) return wxT("file");
	119	for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
	120	return s;
	121	}
	122
	123
	124	wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
	125	{
	126	int i;
	127	bool fnd;
	128
	129	fnd = FALSE;
	130	for (i = location.Length()-1; i >= 0; i--) {
	131	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = TRUE;
	132	else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
	133	}
	134	return wxEmptyString;
	135	}
	136
	137	wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
	138	{
	139	int i, l = location.Length();
	140	int l2 = l + 1;
	141	for (i = l-1; (i >= 0) && ((location[i] != wxT(':')) \|\| (i == 1) \|\| (location[i-2] == wxT(':'))); i--) {if (location[i] == wxT('#')) l2 = i + 1;}
	142	if (i == 0) return wxEmptyString;
	143	else return location.Mid(i + 1, l2 - i - 2);
	144	}
	145
	146	wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
	147	{
	148	char c;
	149	int l = location.Length();
	150
	151	for (int i = l-1; i >= 0; i--) {
	152	c = location[i];
	153	if (c == wxT('#')) return location.Right(l-i-1);
	154	else if ((c == wxT('.')) \|\| (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) return wxEmptyString;
	155	}
	156	return wxEmptyString;
	157	}
	158
	159
	160	wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
	161	int WXUNUSED(flags))
	162	{
	163	return wxEmptyString;
	164	}
	165
	166	wxString wxFileSystemHandler::FindNext()
	167	{
	168	return wxEmptyString;
	169	}
	170
	171	//--------------------------------------------------------------------------------
	172	// wxLocalFSHandler
	173	//--------------------------------------------------------------------------------
	174
	175	class wxLocalFSHandler : public wxFileSystemHandler
	176	{
	177	public:
	178	virtual bool CanOpen(const wxString& location);
	179	virtual wxFSFile* OpenFile(wxFileSystem& fs, const wxString& location);
	180	virtual wxString FindFirst(const wxString& spec, int flags = 0);
	181	virtual wxString FindNext();
	182	};
	183
	184
	185	bool wxLocalFSHandler::CanOpen(const wxString& location)
	186	{
	187	return GetProtocol(location) == wxT("file");
	188	}
	189
	190	wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
	191	{
	192	wxString right = GetRightLocation(location);
	193	if (wxFileExists(right))
	194	return new wxFSFile(new wxFileInputStream(right),
	195	right,
	196	GetMimeTypeFromExt(location),
	197	GetAnchor(location),
	198	wxDateTime(wxFileModificationTime(right)));
	199	else return (wxFSFile*) NULL;
	200	}
	201
	202	wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
	203	{
	204	wxString right = GetRightLocation(spec);
	205	return wxFindFirstFile(right, flags);
	206	}
	207
	208	wxString wxLocalFSHandler::FindNext()
	209	{
	210	return wxFindNextFile();
	211	}
	212
	213
	214
	215	//-----------------------------------------------------------------------------
	216	// wxFileSystem
	217	//-----------------------------------------------------------------------------
	218
	219	IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
	220
	221
	222	wxList wxFileSystem::m_Handlers;
	223
	224
	225	static wxString MakeCorrectPath(const wxString& path)
	226	{
	227	wxString p(path);
	228	wxString r;
	229	int i, j, cnt;
	230
	231	cnt = p.Length();
	232	for (i = 0; i < cnt; i++)
	233	if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	234
	235	if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }
	236
	237	if (cnt < 3) return p;
	238
	239	r << p.GetChar(0) << p.GetChar(1);
	240
	241	// skip trailing ../.., if any
	242	for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') \|\| p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);
	243
	244	// remove back references: translate dir1/../dir2 to dir2
	245	for (; i < cnt; i++)
	246	{
	247	r << p.GetChar(i);
	248	if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
	249	{
	250	for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	251	if (j >= 0 && r.GetChar(j) != wxT(':'))
	252	{
	253	for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	254	r.Remove(j + 1);
	255	}
	256	}
	257	}
	258
	259	for (; i < cnt; i++) r << p.GetChar(i);
	260
	261	return r;
	262	}
	263
	264
	265	void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
	266	{
	267	int i, pathpos = -1;
	268
	269	m_Path = MakeCorrectPath(location);
	270
	271	if (is_dir)
	272	{
	273	if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	274	m_Path << wxT('/');
	275	}
	276
	277	else
	278	{
	279	for (i = m_Path.Length()-1; i >= 0; i--)
	280	{
	281	if (m_Path[(unsigned int) i] == wxT('/'))
	282	{
	283	if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
	284	{
	285	i -= 2;
	286	continue;
	287	}
	288	else
	289	{
	290	pathpos = i;
	291	break;
	292	}
	293	}
	294	else if (m_Path[(unsigned int) i] == wxT(':')) {
	295	pathpos = i;
	296	break;
	297	}
	298	}
	299	if (pathpos == -1)
	300	{
	301	for (i = 0; i < (int) m_Path.Length(); i++)
	302	{
	303	if (m_Path[(unsigned int) i] == wxT(':'))
	304	{
	305	m_Path.Remove(i+1);
	306	break;
	307	}
	308	}
	309	if (i == (int) m_Path.Length())
	310	m_Path = wxEmptyString;
	311	}
	312	else
	313	{
	314	m_Path.Remove(pathpos+1);
	315	}
	316	}
	317	}
	318
	319
	320
	321	wxFSFile* wxFileSystem::OpenFile(const wxString& location)
	322	{
	323	wxString loc = MakeCorrectPath(location);
	324	unsigned i, ln;
	325	char meta;
	326	wxFSFile *s = NULL;
	327	wxNode *node;
	328
	329	ln = loc.Length();
	330	meta = 0;
	331	for (i = 0; i < ln; i++)
	332	{
	333	if (!meta)
	334	switch (loc[i])
	335	{
	336	case wxT('/') : case wxT(':') : case wxT('#') : meta = loc[i];
	337	}
	338	}
	339	m_LastName = wxEmptyString;
	340
	341	// try relative paths first :
	342	if (meta != wxT(':'))
	343	{
	344	node = m_Handlers.GetFirst();
	345	while (node)
	346	{
	347	wxFileSystemHandler h = (wxFileSystemHandler) node -> GetData();
	348	if (h->CanOpen(m_Path + loc))
	349	{
	350	s = h->OpenFile(*this, m_Path + loc);
	351	if (s) { m_LastName = m_Path + loc; break; }
	352	}
	353	node = node->GetNext();
	354	}
	355	}
	356
	357	// if failed, try absolute paths :
	358	if (s == NULL)
	359	{
	360	node = m_Handlers.GetFirst();
	361	while (node)
	362	{
	363	wxFileSystemHandler h = (wxFileSystemHandler) node->GetData();
	364	if (h->CanOpen(loc))
	365	{
	366	s = h->OpenFile(*this, loc);
	367	if (s) { m_LastName = loc; break; }
	368	}
	369	node = node->GetNext();
	370	}
	371	}
	372	return (s);
	373	}
	374
	375
	376
	377	wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
	378	{
	379	wxNode *node;
	380	wxString spec2(spec);
	381
	382	m_FindFileHandler = NULL;
	383
	384	for (int i = spec2.Length()-1; i >= 0; i--)
	385	if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	386
	387	node = m_Handlers.GetFirst();
	388	while (node)
	389	{
	390	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	391	if (m_FindFileHandler -> CanOpen(m_Path + spec2))
	392	return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
	393	node = node->GetNext();
	394	}
	395
	396	node = m_Handlers.GetFirst();
	397	while (node)
	398	{
	399	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	400	if (m_FindFileHandler -> CanOpen(spec2))
	401	return m_FindFileHandler -> FindFirst(spec2, flags);
	402	node = node->GetNext();
	403	}
	404
	405	return wxEmptyString;
	406	}
	407
	408
	409
	410	wxString wxFileSystem::FindNext()
	411	{
	412	if (m_FindFileHandler == NULL) return wxEmptyString;
	413	else return m_FindFileHandler -> FindNext();
	414	}
	415
	416
	417
	418	void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
	419	{
	420	m_Handlers.Append(handler);
	421	}
	422
	423
	424	void wxFileSystem::CleanUpHandlers()
	425	{
	426	m_Handlers.DeleteContents(TRUE);
	427	m_Handlers.Clear();
	428	}
	429
	430
	431
	432
	433	///// Module:
	434
	435	class wxFileSystemModule : public wxModule
	436	{
	437	DECLARE_DYNAMIC_CLASS(wxFileSystemModule)
	438
	439	public:
	440	virtual bool OnInit()
	441	{
	442	wxFileSystem::AddHandler(new wxLocalFSHandler);
	443	return TRUE;
	444	}
	445	virtual void OnExit()
	446	{
	447	wxFileSystem::CleanUpHandlers();
	448	}
	449	};
	450
	451	IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)
	452
	453	#endif
	454	// (wxUSE_FS_INET \|\| wxUSE_FS_ZIP) && wxUSE_STREAMS
	455
	456
	457