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
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "filesys.h"
#endif

#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif


#if wxUSE_FILESYSTEM

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


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

IMPLEMENT_ABSTRACT_CLASS(wxFileSystemHandler, wxObject)


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

    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;
    }

#if wxUSE_MIMETYPE
    static bool s_MinimalMimeEnsured = false;
    if (!s_MinimalMimeEnsured)
    {
        static const wxFileTypeInfo fallbacks[] =
        {
            wxFileTypeInfo(_T("image/jpeg"),
                           _T(""),
                           _T(""),
                           _T("JPEG image (from fallback)"),
                           _T("jpg"), _T("jpeg"), _T("JPG"), _T("JPEG"), NULL),
            wxFileTypeInfo(_T("image/gif"),
                           _T(""),
                           _T(""),
                           _T("GIF image (from fallback)"),
                           _T("gif"), _T("GIF"), NULL),
            wxFileTypeInfo(_T("image/png"),
                           _T(""),
                           _T(""),
                           _T("PNG image (from fallback)"),
                           _T("png"), _T("PNG"), NULL),
            wxFileTypeInfo(_T("image/bmp"),
                           _T(""),
                           _T(""),
                           _T("windows bitmap image (from fallback)"),
                           _T("bmp"), _T("BMP"), NULL),
            wxFileTypeInfo(_T("text/html"),
                           _T(""),
                           _T(""),
                           _T("HTML document (from fallback)"),
                           _T("htm"), _T("html"), _T("HTM"), _T("HTML"), NULL),
            // must terminate the table with this!
            wxFileTypeInfo()
        };
        wxTheMimeTypesManager->AddFallbacks(fallbacks);
        s_MinimalMimeEnsured = true;
    }

    wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(ext);
    if ( !ft || !ft -> GetMimeType(&mime) )
    {
        mime = wxEmptyString;
    }

    delete ft;

    return mime;
#else
    if ( ext.IsSameAs(wxT("htm"), false) || ext.IsSameAs(_T("html"), false) )
        return wxT("text/html");
    if ( ext.IsSameAs(wxT("jpg"), false) || ext.IsSameAs(_T("jpeg"), false) )
        return wxT("image/jpeg");
    if ( ext.IsSameAs(wxT("gif"), false) )
        return wxT("image/gif");
    if ( ext.IsSameAs(wxT("png"), false) )
        return wxT("image/png");
    if ( ext.IsSameAs(wxT("bmp"), false) )
        return wxT("image/bmp");
    return wxEmptyString;
#endif
}


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


wxString wxLocalFSHandler::ms_root;

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

wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
{
    // location has Unix path separators
    wxString right = GetRightLocation(location);
    wxFileName fn = wxFileSystem::URLToFileName(right);
    wxString fullpath = ms_root + fn.GetFullPath();

    if (!wxFileExists(fullpath))
        return (wxFSFile*) NULL;

    // we need to check whether we can really read from this file, otherwise
    // wxFSFile is not going to work
    wxFFileInputStream *is = new wxFFileInputStream(fullpath);
    if ( !is->Ok() )
    {
        delete is;
        return (wxFSFile*) NULL;
    }

    return new wxFSFile(is,
                        right,
                        GetMimeTypeFromExt(location),
                        GetAnchor(location)
#if wxUSE_DATETIME
                        ,wxDateTime(wxFileModificationTime(fullpath))
#endif // wxUSE_DATETIME
                        );
}

wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
{
    wxFileName fn = wxFileSystem::URLToFileName(GetRightLocation(spec));
    return wxFindFirstFile(ms_root + fn.GetFullPath(), flags);
}

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


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

IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
IMPLEMENT_ABSTRACT_CLASS(wxFSFile, 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;
    wxList::compatibility_iterator 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)
{
    wxList::compatibility_iterator 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()
{
    WX_CLEAR_LIST(wxList, m_Handlers);
}

const static wxString g_unixPathString(wxT("/"));
const static wxString g_nativePathString(wxFILE_SEP_PATH);

// Returns the native path for a file URL
wxFileName wxFileSystem::URLToFileName(const wxString& url)
{
    wxString path = url;

    if ( path.Find(wxT("file://")) == 0 )
    {
        path = path.Mid(7);
    }
    else if ( path.Find(wxT("file:")) == 0 )
    {
        path = path.Mid(5);
    }
    // Remove preceding double slash on Mac Classic
#if defined(__WXMAC__) && !defined(__UNIX__)
    else if ( path.Find(wxT("//")) == 0 )
        path = path.Mid(2);
#endif

    path.Replace(wxT("%25"), wxT("%"));
    path.Replace(wxT("%3A"), wxT(":"));

#ifdef __WXMSW__
    // file urls either start with a forward slash (local harddisk),
    // otherwise they have a servername/sharename notation,
    // which only exists on msw and corresponds to a unc
    if ( path[0u] == wxT('/') && path [1u] != wxT('/'))
    {
        path = path.Mid(1);
    }
    else if ( (url.Find(wxT("file://")) == 0) &&
              (path.Find(wxT('/')) != wxNOT_FOUND) &&
              (path.Length() > 1) && (path[1u] != wxT(':')) )
    {
        path = wxT("//") + path;
    }
#endif

    path.Replace(g_unixPathString, g_nativePathString);

    return wxFileName(path, wxPATH_NATIVE);
}

// Returns the file URL for a native path
wxString wxFileSystem::FileNameToURL(const wxFileName& filename)
{
    wxFileName fn = filename;
    fn.Normalize(wxPATH_NORM_DOTS | wxPATH_NORM_TILDE | wxPATH_NORM_ABSOLUTE);
    wxString url = fn.GetFullPath(wxPATH_NATIVE);

#ifndef __UNIX__
    // unc notation, wxMSW
    if ( url.Find(wxT("\\\\")) == 0 )
    {
        url = wxT("//") + url.Mid(2);
    }
    else
    {
        url = wxT("/") + url;
#ifdef __WXMAC__
        url = wxT("/") + url;
#endif

    }
#endif

    url.Replace(g_nativePathString, g_unixPathString);
    url.Replace(wxT("%"), wxT("%25"));
    url.Replace(wxT(":"), wxT("%3A"));
    url = wxT("file:") + url;
    return url;
}


///// 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	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	11	#pragma implementation "filesys.h"
	12	#endif
	13
	14	#include "wx/wxprec.h"
	15
	16	#ifdef __BORLANDC__
	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	#include "wx/filename.h"
	28	#include "wx/log.h"
	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, mime;
	41	wxString loc = GetRightLocation(location);
	42	char c;
	43	int l = loc.Length(), l2;
	44
	45	l2 = l;
	46	for (int i = l-1; i >= 0; i--)
	47	{
	48	c = loc[(unsigned int) i];
	49	if ( c == wxT('#') )
	50	l2 = i + 1;
	51	if ( c == wxT('.') )
	52	{
	53	ext = loc.Right(l2-i-1);
	54	break;
	55	}
	56	if ( (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':')) )
	57	return wxEmptyString;
	58	}
	59
	60	#if wxUSE_MIMETYPE
	61	static bool s_MinimalMimeEnsured = false;
	62	if (!s_MinimalMimeEnsured)
	63	{
	64	static const wxFileTypeInfo fallbacks[] =
	65	{
	66	wxFileTypeInfo(_T("image/jpeg"),
	67	_T(""),
	68	_T(""),
	69	_T("JPEG image (from fallback)"),
	70	_T("jpg"), _T("jpeg"), _T("JPG"), _T("JPEG"), NULL),
	71	wxFileTypeInfo(_T("image/gif"),
	72	_T(""),
	73	_T(""),
	74	_T("GIF image (from fallback)"),
	75	_T("gif"), _T("GIF"), NULL),
	76	wxFileTypeInfo(_T("image/png"),
	77	_T(""),
	78	_T(""),
	79	_T("PNG image (from fallback)"),
	80	_T("png"), _T("PNG"), NULL),
	81	wxFileTypeInfo(_T("image/bmp"),
	82	_T(""),
	83	_T(""),
	84	_T("windows bitmap image (from fallback)"),
	85	_T("bmp"), _T("BMP"), NULL),
	86	wxFileTypeInfo(_T("text/html"),
	87	_T(""),
	88	_T(""),
	89	_T("HTML document (from fallback)"),
	90	_T("htm"), _T("html"), _T("HTM"), _T("HTML"), NULL),
	91	// must terminate the table with this!
	92	wxFileTypeInfo()
	93	};
	94	wxTheMimeTypesManager->AddFallbacks(fallbacks);
	95	s_MinimalMimeEnsured = true;
	96	}
	97
	98	wxFileType *ft = wxTheMimeTypesManager->GetFileTypeFromExtension(ext);
	99	if ( !ft \|\| !ft -> GetMimeType(&mime) )
	100	{
	101	mime = wxEmptyString;
	102	}
	103
	104	delete ft;
	105
	106	return mime;
	107	#else
	108	if ( ext.IsSameAs(wxT("htm"), false) \|\| ext.IsSameAs(_T("html"), false) )
	109	return wxT("text/html");
	110	if ( ext.IsSameAs(wxT("jpg"), false) \|\| ext.IsSameAs(_T("jpeg"), false) )
	111	return wxT("image/jpeg");
	112	if ( ext.IsSameAs(wxT("gif"), false) )
	113	return wxT("image/gif");
	114	if ( ext.IsSameAs(wxT("png"), false) )
	115	return wxT("image/png");
	116	if ( ext.IsSameAs(wxT("bmp"), false) )
	117	return wxT("image/bmp");
	118	return wxEmptyString;
	119	#endif
	120	}
	121
	122
	123
	124	wxString wxFileSystemHandler::GetProtocol(const wxString& location) const
	125	{
	126	wxString s = wxEmptyString;
	127	int i, l = location.Length();
	128	bool fnd = false;
	129
	130	for (i = l-1; (i >= 0) && ((location[i] != wxT('#')) \|\| (!fnd)); i--) {
	131	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = true;
	132	}
	133	if (!fnd) return wxT("file");
	134	for (++i; (i < l) && (location[i] != wxT(':')); i++) s << location[i];
	135	return s;
	136	}
	137
	138
	139	wxString wxFileSystemHandler::GetLeftLocation(const wxString& location) const
	140	{
	141	int i;
	142	bool fnd = false;
	143
	144	for (i = location.Length()-1; i >= 0; i--) {
	145	if ((location[i] == wxT(':')) && (i != 1 /win: C:\path/)) fnd = true;
	146	else if (fnd && (location[i] == wxT('#'))) return location.Left(i);
	147	}
	148	return wxEmptyString;
	149	}
	150
	151	wxString wxFileSystemHandler::GetRightLocation(const wxString& location) const
	152	{
	153	int i, l = location.Length();
	154	int l2 = l + 1;
	155
	156	for (i = l-1;
	157	(i >= 0) &&
	158	((location[i] != wxT(':')) \|\| (i == 1) \|\| (location[i-2] == wxT(':')));
	159	i--)
	160	{
	161	if (location[i] == wxT('#')) l2 = i + 1;
	162	}
	163	if (i == 0) return wxEmptyString;
	164	else return location.Mid(i + 1, l2 - i - 2);
	165	}
	166
	167	wxString wxFileSystemHandler::GetAnchor(const wxString& location) const
	168	{
	169	char c;
	170	int l = location.Length();
	171
	172	for (int i = l-1; i >= 0; i--) {
	173	c = location[i];
	174	if (c == wxT('#')) return location.Right(l-i-1);
	175	else if ((c == wxT('.')) \|\| (c == wxT('/')) \|\| (c == wxT('\\')) \|\| (c == wxT(':'))) return wxEmptyString;
	176	}
	177	return wxEmptyString;
	178	}
	179
	180
	181	wxString wxFileSystemHandler::FindFirst(const wxString& WXUNUSED(spec),
	182	int WXUNUSED(flags))
	183	{
	184	return wxEmptyString;
	185	}
	186
	187	wxString wxFileSystemHandler::FindNext()
	188	{
	189	return wxEmptyString;
	190	}
	191
	192	//--------------------------------------------------------------------------------
	193	// wxLocalFSHandler
	194	//--------------------------------------------------------------------------------
	195
	196
	197	wxString wxLocalFSHandler::ms_root;
	198
	199	bool wxLocalFSHandler::CanOpen(const wxString& location)
	200	{
	201	return GetProtocol(location) == wxT("file");
	202	}
	203
	204	wxFSFile* wxLocalFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
	205	{
	206	// location has Unix path separators
	207	wxString right = GetRightLocation(location);
	208	wxFileName fn = wxFileSystem::URLToFileName(right);
	209	wxString fullpath = ms_root + fn.GetFullPath();
	210
	211	if (!wxFileExists(fullpath))
	212	return (wxFSFile*) NULL;
	213
	214	// we need to check whether we can really read from this file, otherwise
	215	// wxFSFile is not going to work
	216	wxFFileInputStream *is = new wxFFileInputStream(fullpath);
	217	if ( !is->Ok() )
	218	{
	219	delete is;
	220	return (wxFSFile*) NULL;
	221	}
	222
	223	return new wxFSFile(is,
	224	right,
	225	GetMimeTypeFromExt(location),
	226	GetAnchor(location)
	227	#if wxUSE_DATETIME
	228	,wxDateTime(wxFileModificationTime(fullpath))
	229	#endif // wxUSE_DATETIME
	230	);
	231	}
	232
	233	wxString wxLocalFSHandler::FindFirst(const wxString& spec, int flags)
	234	{
	235	wxFileName fn = wxFileSystem::URLToFileName(GetRightLocation(spec));
	236	return wxFindFirstFile(ms_root + fn.GetFullPath(), flags);
	237	}
	238
	239	wxString wxLocalFSHandler::FindNext()
	240	{
	241	return wxFindNextFile();
	242	}
	243
	244
	245
	246	//-----------------------------------------------------------------------------
	247	// wxFileSystem
	248	//-----------------------------------------------------------------------------
	249
	250	IMPLEMENT_DYNAMIC_CLASS(wxFileSystem, wxObject)
	251	IMPLEMENT_ABSTRACT_CLASS(wxFSFile, wxObject)
	252
	253
	254	wxList wxFileSystem::m_Handlers;
	255
	256
	257	static wxString MakeCorrectPath(const wxString& path)
	258	{
	259	wxString p(path);
	260	wxString r;
	261	int i, j, cnt;
	262
	263	cnt = p.Length();
	264	for (i = 0; i < cnt; i++)
	265	if (p.GetChar(i) == wxT('\\')) p.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	266
	267	if (p.Left(2) == wxT("./")) { p = p.Mid(2); cnt -= 2; }
	268
	269	if (cnt < 3) return p;
	270
	271	r << p.GetChar(0) << p.GetChar(1);
	272
	273	// skip trailing ../.., if any
	274	for (i = 2; i < cnt && (p.GetChar(i) == wxT('/') \|\| p.GetChar(i) == wxT('.')); i++) r << p.GetChar(i);
	275
	276	// remove back references: translate dir1/../dir2 to dir2
	277	for (; i < cnt; i++)
	278	{
	279	r << p.GetChar(i);
	280	if (p.GetChar(i) == wxT('/') && p.GetChar(i-1) == wxT('.') && p.GetChar(i-2) == wxT('.'))
	281	{
	282	for (j = r.Length() - 2; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	283	if (j >= 0 && r.GetChar(j) != wxT(':'))
	284	{
	285	for (j = j - 1; j >= 0 && r.GetChar(j) != wxT('/') && r.GetChar(j) != wxT(':'); j--) {}
	286	r.Remove(j + 1);
	287	}
	288	}
	289	}
	290
	291	for (; i < cnt; i++) r << p.GetChar(i);
	292
	293	return r;
	294	}
	295
	296
	297	void wxFileSystem::ChangePathTo(const wxString& location, bool is_dir)
	298	{
	299	int i, pathpos = -1;
	300
	301	m_Path = MakeCorrectPath(location);
	302
	303	if (is_dir)
	304	{
	305	if (m_Path.Length() > 0 && m_Path.Last() != wxT('/') && m_Path.Last() != wxT(':'))
	306	m_Path << wxT('/');
	307	}
	308
	309	else
	310	{
	311	for (i = m_Path.Length()-1; i >= 0; i--)
	312	{
	313	if (m_Path[(unsigned int) i] == wxT('/'))
	314	{
	315	if ((i > 1) && (m_Path[(unsigned int) (i-1)] == wxT('/')) && (m_Path[(unsigned int) (i-2)] == wxT(':')))
	316	{
	317	i -= 2;
	318	continue;
	319	}
	320	else
	321	{
	322	pathpos = i;
	323	break;
	324	}
	325	}
	326	else if (m_Path[(unsigned int) i] == wxT(':')) {
	327	pathpos = i;
	328	break;
	329	}
	330	}
	331	if (pathpos == -1)
	332	{
	333	for (i = 0; i < (int) m_Path.Length(); i++)
	334	{
	335	if (m_Path[(unsigned int) i] == wxT(':'))
	336	{
	337	m_Path.Remove(i+1);
	338	break;
	339	}
	340	}
	341	if (i == (int) m_Path.Length())
	342	m_Path = wxEmptyString;
	343	}
	344	else
	345	{
	346	m_Path.Remove(pathpos+1);
	347	}
	348	}
	349	}
	350
	351
	352
	353	wxFSFile* wxFileSystem::OpenFile(const wxString& location)
	354	{
	355	wxString loc = MakeCorrectPath(location);
	356	unsigned i, ln;
	357	char meta;
	358	wxFSFile *s = NULL;
	359	wxList::compatibility_iterator node;
	360
	361	ln = loc.Length();
	362	meta = 0;
	363	for (i = 0; i < ln; i++)
	364	{
	365	switch (loc[i])
	366	{
	367	case wxT('/') : case wxT(':') : case wxT('#') :
	368	meta = loc[i];
	369	break;
	370	}
	371	if (meta != 0) break;
	372	}
	373	m_LastName = wxEmptyString;
	374
	375	// try relative paths first :
	376	if (meta != wxT(':'))
	377	{
	378	node = m_Handlers.GetFirst();
	379	while (node)
	380	{
	381	wxFileSystemHandler h = (wxFileSystemHandler) node -> GetData();
	382	if (h->CanOpen(m_Path + loc))
	383	{
	384	s = h->OpenFile(*this, m_Path + loc);
	385	if (s) { m_LastName = m_Path + loc; break; }
	386	}
	387	node = node->GetNext();
	388	}
	389	}
	390
	391	// if failed, try absolute paths :
	392	if (s == NULL)
	393	{
	394	node = m_Handlers.GetFirst();
	395	while (node)
	396	{
	397	wxFileSystemHandler h = (wxFileSystemHandler) node->GetData();
	398	if (h->CanOpen(loc))
	399	{
	400	s = h->OpenFile(*this, loc);
	401	if (s) { m_LastName = loc; break; }
	402	}
	403	node = node->GetNext();
	404	}
	405	}
	406	return (s);
	407	}
	408
	409
	410
	411	wxString wxFileSystem::FindFirst(const wxString& spec, int flags)
	412	{
	413	wxList::compatibility_iterator node;
	414	wxString spec2(spec);
	415
	416	m_FindFileHandler = NULL;
	417
	418	for (int i = spec2.Length()-1; i >= 0; i--)
	419	if (spec2[(unsigned int) i] == wxT('\\')) spec2.GetWritableChar(i) = wxT('/'); // Want to be windows-safe
	420
	421	node = m_Handlers.GetFirst();
	422	while (node)
	423	{
	424	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	425	if (m_FindFileHandler -> CanOpen(m_Path + spec2))
	426	return m_FindFileHandler -> FindFirst(m_Path + spec2, flags);
	427	node = node->GetNext();
	428	}
	429
	430	node = m_Handlers.GetFirst();
	431	while (node)
	432	{
	433	m_FindFileHandler = (wxFileSystemHandler*) node -> GetData();
	434	if (m_FindFileHandler -> CanOpen(spec2))
	435	return m_FindFileHandler -> FindFirst(spec2, flags);
	436	node = node->GetNext();
	437	}
	438
	439	return wxEmptyString;
	440	}
	441
	442
	443
	444	wxString wxFileSystem::FindNext()
	445	{
	446	if (m_FindFileHandler == NULL) return wxEmptyString;
	447	else return m_FindFileHandler -> FindNext();
	448	}
	449
	450
	451
	452	void wxFileSystem::AddHandler(wxFileSystemHandler *handler)
	453	{
	454	m_Handlers.Append(handler);
	455	}
	456
	457
	458	void wxFileSystem::CleanUpHandlers()
	459	{
	460	WX_CLEAR_LIST(wxList, m_Handlers);
	461	}
	462
	463	const static wxString g_unixPathString(wxT("/"));
	464	const static wxString g_nativePathString(wxFILE_SEP_PATH);
	465
	466	// Returns the native path for a file URL
	467	wxFileName wxFileSystem::URLToFileName(const wxString& url)
	468	{
	469	wxString path = url;
	470
	471	if ( path.Find(wxT("file://")) == 0 )
	472	{
	473	path = path.Mid(7);
	474	}
	475	else if ( path.Find(wxT("file:")) == 0 )
	476	{
	477	path = path.Mid(5);
	478	}
	479	// Remove preceding double slash on Mac Classic
	480	#if defined(__WXMAC__) && !defined(__UNIX__)
	481	else if ( path.Find(wxT("//")) == 0 )
	482	path = path.Mid(2);
	483	#endif
	484
	485	path.Replace(wxT("%25"), wxT("%"));
	486	path.Replace(wxT("%3A"), wxT(":"));
	487
	488	#ifdef __WXMSW__
	489	// file urls either start with a forward slash (local harddisk),
	490	// otherwise they have a servername/sharename notation,
	491	// which only exists on msw and corresponds to a unc
	492	if ( path[0u] == wxT('/') && path [1u] != wxT('/'))
	493	{
	494	path = path.Mid(1);
	495	}
	496	else if ( (url.Find(wxT("file://")) == 0) &&
	497	(path.Find(wxT('/')) != wxNOT_FOUND) &&
	498	(path.Length() > 1) && (path[1u] != wxT(':')) )
	499	{
	500	path = wxT("//") + path;
	501	}
	502	#endif
	503
	504	path.Replace(g_unixPathString, g_nativePathString);
	505
	506	return wxFileName(path, wxPATH_NATIVE);
	507	}
	508
	509	// Returns the file URL for a native path
	510	wxString wxFileSystem::FileNameToURL(const wxFileName& filename)
	511	{
	512	wxFileName fn = filename;
	513	fn.Normalize(wxPATH_NORM_DOTS \| wxPATH_NORM_TILDE \| wxPATH_NORM_ABSOLUTE);
	514	wxString url = fn.GetFullPath(wxPATH_NATIVE);
	515
	516	#ifndef __UNIX__
	517	// unc notation, wxMSW
	518	if ( url.Find(wxT("\\\\")) == 0 )
	519	{
	520	url = wxT("//") + url.Mid(2);
	521	}
	522	else
	523	{
	524	url = wxT("/") + url;
	525	#ifdef __WXMAC__
	526	url = wxT("/") + url;
	527	#endif
	528
	529	}
	530	#endif
	531
	532	url.Replace(g_nativePathString, g_unixPathString);
	533	url.Replace(wxT("%"), wxT("%25"));
	534	url.Replace(wxT(":"), wxT("%3A"));
	535	url = wxT("file:") + url;
	536	return url;
	537	}
	538
	539
	540	///// Module:
	541
	542	class wxFileSystemModule : public wxModule
	543	{
	544	DECLARE_DYNAMIC_CLASS(wxFileSystemModule)
	545
	546	public:
	547	virtual bool OnInit()
	548	{
	549	wxFileSystem::AddHandler(new wxLocalFSHandler);
	550	return true;
	551	}
	552	virtual void OnExit()
	553	{
	554	wxFileSystem::CleanUpHandlers();
	555	}
	556	};
	557
	558	IMPLEMENT_DYNAMIC_CLASS(wxFileSystemModule, wxModule)
	559
	560	#endif
	561	// wxUSE_FILESYSTEM
	562
	563
	564