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58263bb4c371f36d114fb366df9197cf8ec07c4c
wxWidgets/src/common/filename.cpp
Vadim Zeitlin 58263bb4c3 Make wxFILE_EXISTS_SYMLINK work on its own, without wxFILE_EXISTS_NO_FOLLOW. 
Include the wxFILE_EXISTS_NO_FOLLOW bit in wxFILE_EXISTS_SYMLINK definition to
allow using just wxFileName::Exists(wxFILE_EXISTS_SYMLINK) which used to never
work because the link was followed.

Closes #14777.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72777 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2012-10-25 22:30:43 +00:00

3013 lines
85 KiB
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/////////////////////////////////////////////////////////////////////////////
// Name: src/common/filename.cpp
// Purpose: wxFileName - encapsulates a file path
// Author: Robert Roebling, Vadim Zeitlin
// Modified by:
// Created: 28.12.2000
// RCS-ID: $Id$
// Copyright: (c) 2000 Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
/*
Here are brief descriptions of the filename formats supported by this class:
wxPATH_UNIX: standard Unix format, used under Darwin as well, absolute file
names have the form:
/dir1/dir2/.../dirN/filename, "." and ".." stand for the
current and parent directory respectively, "~" is parsed as the
user HOME and "~username" as the HOME of that user
wxPATH_DOS: DOS/Windows format, absolute file names have the form:
drive:\dir1\dir2\...\dirN\filename.ext where drive is a single
letter. "." and ".." as for Unix but no "~".
There are also UNC names of the form \\share\fullpath and
MSW unique volume names of the form \\?\Volume{GUID}\fullpath.
The latter provide a uniform way to access a volume regardless of
its current mount point, i.e. you can change a volume's mount
point from D: to E:, or even remove it, and still be able to
access it through its unique volume name. More on the subject can
be found in MSDN's article "Naming a Volume" that is currently at
http://msdn.microsoft.com/en-us/library/aa365248(VS.85).aspx.
wxPATH_MAC: Mac OS 8/9 only, not used any longer, absolute file
names have the form
volume:dir1:...:dirN:filename
and the relative file names are either
:dir1:...:dirN:filename
or just
filename
(although :filename works as well).
Since the volume is just part of the file path, it is not
treated like a separate entity as it is done under DOS and
VMS, it is just treated as another dir.
wxPATH_VMS: VMS native format, absolute file names have the form
<device>:[dir1.dir2.dir3]file.txt
or
<device>:[000000.dir1.dir2.dir3]file.txt
the <device> is the physical device (i.e. disk). 000000 is the
root directory on the device which can be omitted.
Note that VMS uses different separators unlike Unix:
: always after the device. If the path does not contain : than
the default (the device of the current directory) is assumed.
[ start of directory specification
. separator between directory and subdirectory
] between directory and file
*/
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#ifdef __WINDOWS__
#include "wx/msw/wrapwin.h" // For GetShort/LongPathName
#endif
#include "wx/dynarray.h"
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/utils.h"
#include "wx/crt.h"
#endif
#include "wx/filename.h"
#include "wx/private/filename.h"
#include "wx/tokenzr.h"
#include "wx/config.h" // for wxExpandEnvVars
#include "wx/dynlib.h"
#include "wx/dir.h"
#if defined(__WIN32__) && defined(__MINGW32__)
#include "wx/msw/gccpriv.h"
#endif
#ifdef __WINDOWS__
#include "wx/msw/private.h"
#endif
#if defined(__WXMAC__)
#include "wx/osx/private.h" // includes mac headers
#endif
// utime() is POSIX so should normally be available on all Unices
#ifdef __UNIX_LIKE__
#include <sys/types.h>
#include <utime.h>
#include <sys/stat.h>
#include <unistd.h>
#endif
#ifdef __DJGPP__
#include <unistd.h>
#endif
#ifdef __WATCOMC__
#include <io.h>
#include <sys/utime.h>
#include <sys/stat.h>
#endif
#ifdef __VISAGECPP__
#ifndef MAX_PATH
#define MAX_PATH 256
#endif
#endif
#ifdef __EMX__
#include <os2.h>
#define MAX_PATH _MAX_PATH
#endif
#ifndef S_ISREG
#define S_ISREG(mode) ((mode) & S_IFREG)
#endif
#ifndef S_ISDIR
#define S_ISDIR(mode) ((mode) & S_IFDIR)
#endif
#if wxUSE_LONGLONG
extern const wxULongLong wxInvalidSize = (unsigned)-1;
#endif // wxUSE_LONGLONG
namespace
{
// ----------------------------------------------------------------------------
// private classes
// ----------------------------------------------------------------------------
// small helper class which opens and closes the file - we use it just to get
// a file handle for the given file name to pass it to some Win32 API function
#if defined(__WIN32__) && !defined(__WXMICROWIN__)
class wxFileHandle
{
public:
enum OpenMode
{
ReadAttr,
WriteAttr
};
wxFileHandle(const wxString& filename, OpenMode mode, int flags = 0)
{
// be careful and use FILE_{READ,WRITE}_ATTRIBUTES here instead of the
// usual GENERIC_{READ,WRITE} as we don't want the file access time to
// be changed when we open it because this class is used for setting
// access time (see #10567)
m_hFile = ::CreateFile
(
filename.t_str(), // name
mode == ReadAttr ? FILE_READ_ATTRIBUTES // access mask
: FILE_WRITE_ATTRIBUTES,
FILE_SHARE_READ | // sharing mode
FILE_SHARE_WRITE, // (allow everything)
NULL, // no secutity attr
OPEN_EXISTING, // creation disposition
flags, // flags
NULL // no template file
);
if ( m_hFile == INVALID_HANDLE_VALUE )
{
if ( mode == ReadAttr )
{
wxLogSysError(_("Failed to open '%s' for reading"),
filename.c_str());
}
else
{
wxLogSysError(_("Failed to open '%s' for writing"),
filename.c_str());
}
}
}
~wxFileHandle()
{
if ( m_hFile != INVALID_HANDLE_VALUE )
{
if ( !::CloseHandle(m_hFile) )
{
wxLogSysError(_("Failed to close file handle"));
}
}
}
// return true only if the file could be opened successfully
bool IsOk() const { return m_hFile != INVALID_HANDLE_VALUE; }
// get the handle
operator HANDLE() const { return m_hFile; }
private:
HANDLE m_hFile;
};
#endif // __WIN32__
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
#if wxUSE_DATETIME && defined(__WIN32__) && !defined(__WXMICROWIN__)
// convert between wxDateTime and FILETIME which is a 64-bit value representing
// the number of 100-nanosecond intervals since January 1, 1601.
static void ConvertFileTimeToWx(wxDateTime *dt, const FILETIME &ft)
{
FILETIME ftcopy = ft;
FILETIME ftLocal;
if ( !::FileTimeToLocalFileTime(&ftcopy, &ftLocal) )
{
wxLogLastError(wxT("FileTimeToLocalFileTime"));
}
SYSTEMTIME st;
if ( !::FileTimeToSystemTime(&ftLocal, &st) )
{
wxLogLastError(wxT("FileTimeToSystemTime"));
}
dt->Set(st.wDay, wxDateTime::Month(st.wMonth - 1), st.wYear,
st.wHour, st.wMinute, st.wSecond, st.wMilliseconds);
}
static void ConvertWxToFileTime(FILETIME *ft, const wxDateTime& dt)
{
SYSTEMTIME st;
st.wDay = dt.GetDay();
st.wMonth = (WORD)(dt.GetMonth() + 1);
st.wYear = (WORD)dt.GetYear();
st.wHour = dt.GetHour();
st.wMinute = dt.GetMinute();
st.wSecond = dt.GetSecond();
st.wMilliseconds = dt.GetMillisecond();
FILETIME ftLocal;
if ( !::SystemTimeToFileTime(&st, &ftLocal) )
{
wxLogLastError(wxT("SystemTimeToFileTime"));
}
if ( !::LocalFileTimeToFileTime(&ftLocal, ft) )
{
wxLogLastError(wxT("LocalFileTimeToFileTime"));
}
}
#endif // wxUSE_DATETIME && __WIN32__
// return a string with the volume par
static wxString wxGetVolumeString(const wxString& volume, wxPathFormat format)
{
wxString path;
if ( !volume.empty() )
{
format = wxFileName::GetFormat(format);
// Special Windows UNC paths hack, part 2: undo what we did in
// SplitPath() and make an UNC path if we have a drive which is not a
// single letter (hopefully the network shares can't be one letter only
// although I didn't find any authoritative docs on this)
if ( format == wxPATH_DOS && volume.length() > 1 )
{
// We also have to check for Windows unique volume names here and
// return it with '\\?\' prepended to it
if ( wxFileName::IsMSWUniqueVolumeNamePath("\\\\?\\" + volume + "\\",
format) )
{
path << "\\\\?\\" << volume;
}
else
{
// it must be a UNC path
path << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_DOS << volume;
}
}
else if ( format == wxPATH_DOS || format == wxPATH_VMS )
{
path << volume << wxFileName::GetVolumeSeparator(format);
}
// else ignore
}
return path;
}
// return true if the character is a DOS path separator i.e. either a slash or
// a backslash
inline bool IsDOSPathSep(wxUniChar ch)
{
return ch == wxFILE_SEP_PATH_DOS || ch == wxFILE_SEP_PATH_UNIX;
}
// return true if the format used is the DOS/Windows one and the string looks
// like a UNC path
static bool IsUNCPath(const wxString& path, wxPathFormat format)
{
return format == wxPATH_DOS &&
path.length() >= 4 && // "\\a" can't be a UNC path
IsDOSPathSep(path[0u]) &&
IsDOSPathSep(path[1u]) &&
!IsDOSPathSep(path[2u]);
}
#ifndef __WIN32__
// Under Unix-ish systems (basically everything except Windows) we may work
// either with the file itself or its target if it's a symbolic link and we
// should dereference it, as determined by wxFileName::ShouldFollowLink() and
// the absence of the wxFILE_EXISTS_NO_FOLLOW flag. StatAny() can be used to
// stat the appropriate file with an extra twist that it also works when there
// is no wxFileName object at all, as is the case in static methods.
// Private implementation, don't call directly, use one of the overloads below.
bool DoStatAny(wxStructStat& st, wxString path, bool dereference)
{
// We need to remove any trailing slashes from the path because they could
// interfere with the symlink following decision: even if we use lstat(),
// it would still follow the symlink if we pass it a path with a slash at
// the end because the symlink resolution would happen while following the
// path and not for the last path element itself.
while ( wxEndsWithPathSeparator(path) )
{
const size_t posLast = path.length() - 1;
if ( !posLast )
{
// Don't turn "/" into empty string.
break;
}
path.erase(posLast);
}
int ret = dereference ? wxStat(path, &st) : wxLstat(path, &st);
return ret == 0;
}
// Overloads to use for a case when we don't have wxFileName object and when we
// do have one.
inline
bool StatAny(wxStructStat& st, const wxString& path, int flags)
{
return DoStatAny(st, path, !(flags & wxFILE_EXISTS_NO_FOLLOW));
}
inline
bool StatAny(wxStructStat& st, const wxFileName& fn)
{
return DoStatAny(st, fn.GetFullPath(), fn.ShouldFollowLink());
}
#endif // !__WIN32__
// ----------------------------------------------------------------------------
// private constants
// ----------------------------------------------------------------------------
// length of \\?\Volume{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}\ string
static const size_t wxMSWUniqueVolumePrefixLength = 49;
} // anonymous namespace
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// wxFileName construction
// ----------------------------------------------------------------------------
void wxFileName::Assign( const wxFileName &filepath )
{
m_volume = filepath.GetVolume();
m_dirs = filepath.GetDirs();
m_name = filepath.GetName();
m_ext = filepath.GetExt();
m_relative = filepath.m_relative;
m_hasExt = filepath.m_hasExt;
m_dontFollowLinks = filepath.m_dontFollowLinks;
}
void wxFileName::Assign(const wxString& volume,
const wxString& path,
const wxString& name,
const wxString& ext,
bool hasExt,
wxPathFormat format)
{
// we should ignore paths which look like UNC shares because we already
// have the volume here and the UNC notation (\\server\path) is only valid
// for paths which don't start with a volume, so prevent SetPath() from
// recognizing "\\foo\bar" in "c:\\foo\bar" as an UNC path
//
// note also that this is a rather ugly way to do what we want (passing
// some kind of flag telling to ignore UNC paths to SetPath() would be
// better) but this is the safest thing to do to avoid breaking backwards
// compatibility in 2.8
if ( IsUNCPath(path, format) )
{
// remove one of the 2 leading backslashes to ensure that it's not
// recognized as an UNC path by SetPath()
wxString pathNonUNC(path, 1, wxString::npos);
SetPath(pathNonUNC, format);
}
else // no UNC complications
{
SetPath(path, format);
}
m_volume = volume;
m_ext = ext;
m_name = name;
m_hasExt = hasExt;
}
void wxFileName::SetPath( const wxString& pathOrig, wxPathFormat format )
{
m_dirs.Clear();
if ( pathOrig.empty() )
{
// no path at all
m_relative = true;
return;
}
format = GetFormat( format );
// 0) deal with possible volume part first
wxString volume,
path;
SplitVolume(pathOrig, &volume, &path, format);
if ( !volume.empty() )
{
m_relative = false;
SetVolume(volume);
}
// 1) Determine if the path is relative or absolute.
if ( path.empty() )
{
// we had only the volume
return;
}
wxChar leadingChar = path[0u];
switch (format)
{
case wxPATH_MAC:
m_relative = leadingChar == wxT(':');
// We then remove a leading ":". The reason is in our
// storage form for relative paths:
// ":dir:file.txt" actually means "./dir/file.txt" in
// DOS notation and should get stored as
// (relative) (dir) (file.txt)
// "::dir:file.txt" actually means "../dir/file.txt"
// stored as (relative) (..) (dir) (file.txt)
// This is important only for the Mac as an empty dir
// actually means <UP>, whereas under DOS, double
// slashes can be ignored: "\\\\" is the same as "\\".
if (m_relative)
path.erase( 0, 1 );
break;
case wxPATH_VMS:
// TODO: what is the relative path format here?
m_relative = false;
break;
default:
wxFAIL_MSG( wxT("Unknown path format") );
// !! Fall through !!
case wxPATH_UNIX:
m_relative = leadingChar != wxT('/');
break;
case wxPATH_DOS:
m_relative = !IsPathSeparator(leadingChar, format);
break;
}
// 2) Break up the path into its members. If the original path
// was just "/" or "\\", m_dirs will be empty. We know from
// the m_relative field, if this means "nothing" or "root dir".
wxStringTokenizer tn( path, GetPathSeparators(format) );
while ( tn.HasMoreTokens() )
{
wxString token = tn.GetNextToken();
// Remove empty token under DOS and Unix, interpret them
// as .. under Mac.
if (token.empty())
{
if (format == wxPATH_MAC)
m_dirs.Add( wxT("..") );
// else ignore
}
else
{
m_dirs.Add( token );
}
}
}
void wxFileName::Assign(const wxString& fullpath,
wxPathFormat format)
{
wxString volume, path, name, ext;
bool hasExt;
SplitPath(fullpath, &volume, &path, &name, &ext, &hasExt, format);
Assign(volume, path, name, ext, hasExt, format);
}
void wxFileName::Assign(const wxString& fullpathOrig,
const wxString& fullname,
wxPathFormat format)
{
// always recognize fullpath as directory, even if it doesn't end with a
// slash
wxString fullpath = fullpathOrig;
if ( !fullpath.empty() && !wxEndsWithPathSeparator(fullpath) )
{
fullpath += GetPathSeparator(format);
}
wxString volume, path, name, ext;
bool hasExt;
// do some consistency checks: the name should be really just the filename
// and the path should be really just a path
wxString volDummy, pathDummy, nameDummy, extDummy;
SplitPath(fullname, &volDummy, &pathDummy, &name, &ext, &hasExt, format);
wxASSERT_MSG( volDummy.empty() && pathDummy.empty(),
wxT("the file name shouldn't contain the path") );
SplitPath(fullpath, &volume, &path, &nameDummy, &extDummy, format);
#ifndef __VMS
// This test makes no sense on an OpenVMS system.
wxASSERT_MSG( nameDummy.empty() && extDummy.empty(),
wxT("the path shouldn't contain file name nor extension") );
#endif
Assign(volume, path, name, ext, hasExt, format);
}
void wxFileName::Assign(const wxString& pathOrig,
const wxString& name,
const wxString& ext,
wxPathFormat format)
{
wxString volume,
path;
SplitVolume(pathOrig, &volume, &path, format);
Assign(volume, path, name, ext, format);
}
void wxFileName::AssignDir(const wxString& dir, wxPathFormat format)
{
Assign(dir, wxEmptyString, format);
}
void wxFileName::Clear()
{
m_dirs.Clear();
m_volume =
m_name =
m_ext = wxEmptyString;
// we don't have any absolute path for now
m_relative = true;
// nor any extension
m_hasExt = false;
// follow symlinks by default
m_dontFollowLinks = false;
}
/* static */
wxFileName wxFileName::FileName(const wxString& file, wxPathFormat format)
{
return wxFileName(file, format);
}
/* static */
wxFileName wxFileName::DirName(const wxString& dir, wxPathFormat format)
{
wxFileName fn;
fn.AssignDir(dir, format);
return fn;
}
// ----------------------------------------------------------------------------
// existence tests
// ----------------------------------------------------------------------------
namespace
{
#if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
void RemoveTrailingSeparatorsFromPath(wxString& strPath)
{
// Windows fails to find directory named "c:\dir\" even if "c:\dir" exists,
// so remove all trailing backslashes from the path - but don't do this for
// the paths "d:\" (which are different from "d:"), for just "\" or for
// windows unique volume names ("\\?\Volume{GUID}\")
while ( wxEndsWithPathSeparator( strPath ) )
{
size_t len = strPath.length();
if ( len == 1 || (len == 3 && strPath[len - 2] == wxT(':')) ||
(len == wxMSWUniqueVolumePrefixLength &&
wxFileName::IsMSWUniqueVolumeNamePath(strPath)))
{
break;
}
strPath.Truncate(len - 1);
}
}
#endif // __WINDOWS__ || __OS2__
bool
wxFileSystemObjectExists(const wxString& path, int flags)
{
// Should the existence of file/directory with this name be accepted, i.e.
// result in the true return value from this function?
const bool acceptFile = (flags & wxFILE_EXISTS_REGULAR) != 0;
const bool acceptDir = (flags & wxFILE_EXISTS_DIR) != 0;
wxString strPath(path);
#if defined(__WINDOWS__) && !defined(__WXMICROWIN__)
if ( acceptDir )
{
// Ensure that the path doesn't have any trailing separators when
// checking for directories.
RemoveTrailingSeparatorsFromPath(strPath);
}
// we must use GetFileAttributes() instead of the ANSI C functions because
// it can cope with network (UNC) paths unlike them
DWORD ret = ::GetFileAttributes(strPath.t_str());
if ( ret == INVALID_FILE_ATTRIBUTES )
return false;
if ( ret & FILE_ATTRIBUTE_DIRECTORY )
return acceptDir;
// Anything else must be a file (perhaps we should check for
// FILE_ATTRIBUTE_REPARSE_POINT?)
return acceptFile;
#elif defined(__OS2__)
if ( acceptDir )
{
// OS/2 can't handle "d:", it wants either "d:\" or "d:."
if (strPath.length() == 2 && strPath[1u] == wxT(':'))
strPath << wxT('.');
}
FILESTATUS3 Info = {{0}};
APIRET rc = ::DosQueryPathInfo((PSZ)(WXSTRINGCAST strPath), FIL_STANDARD,
(void*) &Info, sizeof(FILESTATUS3));
if ( rc == NO_ERROR )
{
if ( Info.attrFile & FILE_DIRECTORY )
return acceptDir;
else
return acceptFile;
}
// We consider that the path must exist if we get a sharing violation for
// it but we don't know what is it in this case.
if ( rc == ERROR_SHARING_VIOLATION )
return flags & wxFILE_EXISTS_ANY;
// Any other error (usually ERROR_PATH_NOT_FOUND), means there is nothing
// there.
return false;
#else // Non-MSW, non-OS/2
wxStructStat st;
if ( !StatAny(st, strPath, flags) )
return false;
if ( S_ISREG(st.st_mode) )
return acceptFile;
if ( S_ISDIR(st.st_mode) )
return acceptDir;
if ( S_ISLNK(st.st_mode) )
{
// Take care to not test for "!= 0" here as this would erroneously
// return true if only wxFILE_EXISTS_NO_FOLLOW, which is part of
// wxFILE_EXISTS_SYMLINK, is set too.
return (flags & wxFILE_EXISTS_SYMLINK) == wxFILE_EXISTS_SYMLINK;
}
if ( S_ISBLK(st.st_mode) || S_ISCHR(st.st_mode) )
return (flags & wxFILE_EXISTS_DEVICE) != 0;
if ( S_ISFIFO(st.st_mode) )
return (flags & wxFILE_EXISTS_FIFO) != 0;
if ( S_ISSOCK(st.st_mode) )
return (flags & wxFILE_EXISTS_SOCKET) != 0;
return flags & wxFILE_EXISTS_ANY;
#endif // Platforms
}
} // anonymous namespace
bool wxFileName::FileExists() const
{
int flags = wxFILE_EXISTS_REGULAR;
if ( !ShouldFollowLink() )
flags |= wxFILE_EXISTS_NO_FOLLOW;
return wxFileSystemObjectExists(GetFullPath(), flags);
}
/* static */
bool wxFileName::FileExists( const wxString &filePath )
{
return wxFileSystemObjectExists(filePath, wxFILE_EXISTS_REGULAR);
}
bool wxFileName::DirExists() const
{
int flags = wxFILE_EXISTS_DIR;
if ( !ShouldFollowLink() )
flags |= wxFILE_EXISTS_NO_FOLLOW;
return Exists(GetPath(), flags);
}
/* static */
bool wxFileName::DirExists( const wxString &dirPath )
{
return wxFileSystemObjectExists(dirPath, wxFILE_EXISTS_DIR);
}
bool wxFileName::Exists(int flags) const
{
// Notice that wxFILE_EXISTS_NO_FOLLOW may be specified in the flags even
// if our DontFollowLink() hadn't been called and we do honour it then. But
// if the user took the care of calling DontFollowLink(), it is always
// taken into account.
if ( !ShouldFollowLink() )
flags |= wxFILE_EXISTS_NO_FOLLOW;
return wxFileSystemObjectExists(GetFullPath(), flags);
}
/* static */
bool wxFileName::Exists(const wxString& path, int flags)
{
return wxFileSystemObjectExists(path, flags);
}
// ----------------------------------------------------------------------------
// CWD and HOME stuff
// ----------------------------------------------------------------------------
void wxFileName::AssignCwd(const wxString& volume)
{
AssignDir(wxFileName::GetCwd(volume));
}
/* static */
wxString wxFileName::GetCwd(const wxString& volume)
{
// if we have the volume, we must get the current directory on this drive
// and to do this we have to chdir to this volume - at least under Windows,
// I don't know how to get the current drive on another volume elsewhere
// (TODO)
wxString cwdOld;
if ( !volume.empty() )
{
cwdOld = wxGetCwd();
SetCwd(volume + GetVolumeSeparator());
}
wxString cwd = ::wxGetCwd();
if ( !volume.empty() )
{
SetCwd(cwdOld);
}
return cwd;
}
bool wxFileName::SetCwd() const
{
return wxFileName::SetCwd( GetPath() );
}
bool wxFileName::SetCwd( const wxString &cwd )
{
return ::wxSetWorkingDirectory( cwd );
}
void wxFileName::AssignHomeDir()
{
AssignDir(wxFileName::GetHomeDir());
}
wxString wxFileName::GetHomeDir()
{
return ::wxGetHomeDir();
}
// ----------------------------------------------------------------------------
// CreateTempFileName
// ----------------------------------------------------------------------------
#if wxUSE_FILE || wxUSE_FFILE
#if !defined wx_fdopen && defined HAVE_FDOPEN
#define wx_fdopen fdopen
#endif
// NB: GetTempFileName() under Windows creates the file, so using
// O_EXCL there would fail
#ifdef __WINDOWS__
#define wxOPEN_EXCL 0
#else
#define wxOPEN_EXCL O_EXCL
#endif
#ifdef wxOpenOSFHandle
#define WX_HAVE_DELETE_ON_CLOSE
// On Windows create a file with the FILE_FLAGS_DELETE_ON_CLOSE flags.
//
static int wxOpenWithDeleteOnClose(const wxString& filename)
{
DWORD access = GENERIC_READ | GENERIC_WRITE;
DWORD disposition = OPEN_ALWAYS;
DWORD attributes = FILE_ATTRIBUTE_TEMPORARY |
FILE_FLAG_DELETE_ON_CLOSE;
HANDLE h = ::CreateFile(filename.t_str(), access, 0, NULL,
disposition, attributes, NULL);
return wxOpenOSFHandle(h, wxO_BINARY);
}
#endif // wxOpenOSFHandle
// Helper to open the file
//
static int wxTempOpen(const wxString& path, bool *deleteOnClose)
{
#ifdef WX_HAVE_DELETE_ON_CLOSE
if (*deleteOnClose)
return wxOpenWithDeleteOnClose(path);
#endif
*deleteOnClose = false;
return wxOpen(path, wxO_BINARY | O_RDWR | O_CREAT | wxOPEN_EXCL, 0600);
}
#if wxUSE_FFILE
// Helper to open the file and attach it to the wxFFile
//
static bool wxTempOpen(wxFFile *file, const wxString& path, bool *deleteOnClose)
{
#ifndef wx_fdopen
*deleteOnClose = false;
return file->Open(path, wxT("w+b"));
#else // wx_fdopen
int fd = wxTempOpen(path, deleteOnClose);
if (fd == -1)
return false;
file->Attach(wx_fdopen(fd, "w+b"), path);
return file->IsOpened();
#endif // wx_fdopen
}
#endif // wxUSE_FFILE
#if !wxUSE_FILE
#define WXFILEARGS(x, y) y
#elif !wxUSE_FFILE
#define WXFILEARGS(x, y) x
#else
#define WXFILEARGS(x, y) x, y
#endif
// Implementation of wxFileName::CreateTempFileName().
//
static wxString wxCreateTempImpl(
const wxString& prefix,
WXFILEARGS(wxFile *fileTemp, wxFFile *ffileTemp),
bool *deleteOnClose = NULL)
{
#if wxUSE_FILE && wxUSE_FFILE
wxASSERT(fileTemp == NULL || ffileTemp == NULL);
#endif
wxString path, dir, name;
bool wantDeleteOnClose = false;
if (deleteOnClose)
{
// set the result to false initially
wantDeleteOnClose = *deleteOnClose;
*deleteOnClose = false;
}
else
{
// easier if it alwasys points to something
deleteOnClose = &wantDeleteOnClose;
}
// use the directory specified by the prefix
wxFileName::SplitPath(prefix, &dir, &name, NULL /* extension */);
if (dir.empty())
{
dir = wxFileName::GetTempDir();
}
#if defined(__WXWINCE__)
path = dir + wxT("\\") + name;
int i = 1;
while (wxFileName::FileExists(path))
{
path = dir + wxT("\\") + name ;
path << i;
i ++;
}
#elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
if (!::GetTempFileName(dir.t_str(), name.t_str(), 0,
wxStringBuffer(path, MAX_PATH + 1)))
{
wxLogLastError(wxT("GetTempFileName"));
path.clear();
}
#else // !Windows
path = dir;
if ( !wxEndsWithPathSeparator(dir) &&
(name.empty() || !wxIsPathSeparator(name[0u])) )
{
path += wxFILE_SEP_PATH;
}
path += name;
#if defined(HAVE_MKSTEMP)
// scratch space for mkstemp()
path += wxT("XXXXXX");
// we need to copy the path to the buffer in which mkstemp() can modify it
wxCharBuffer buf(path.fn_str());
// cast is safe because the string length doesn't change
int fdTemp = mkstemp( (char*)(const char*) buf );
if ( fdTemp == -1 )
{
// this might be not necessary as mkstemp() on most systems should have
// already done it but it doesn't hurt neither...
path.clear();
}
else // mkstemp() succeeded
{
path = wxConvFile.cMB2WX( (const char*) buf );
#if wxUSE_FILE
// avoid leaking the fd
if ( fileTemp )
{
fileTemp->Attach(fdTemp);
}
else
#endif
#if wxUSE_FFILE
if ( ffileTemp )
{
#ifdef wx_fdopen
ffileTemp->Attach(wx_fdopen(fdTemp, "r+b"), path);
#else
ffileTemp->Open(path, wxT("r+b"));
close(fdTemp);
#endif
}
else
#endif
{
close(fdTemp);
}
}
#else // !HAVE_MKSTEMP
#ifdef HAVE_MKTEMP
// same as above
path += wxT("XXXXXX");
wxCharBuffer buf = wxConvFile.cWX2MB( path );
if ( !mktemp( (char*)(const char*) buf ) )
{
path.clear();
}
else
{
path = wxConvFile.cMB2WX( (const char*) buf );
}
#else // !HAVE_MKTEMP (includes __DOS__)
// generate the unique file name ourselves
#if !defined(__DOS__)
path << (unsigned int)getpid();
#endif
wxString pathTry;
static const size_t numTries = 1000;
for ( size_t n = 0; n < numTries; n++ )
{
// 3 hex digits is enough for numTries == 1000 < 4096
pathTry = path + wxString::Format(wxT("%.03x"), (unsigned int) n);
if ( !wxFileName::FileExists(pathTry) )
{
break;
}
pathTry.clear();
}
path = pathTry;
#endif // HAVE_MKTEMP/!HAVE_MKTEMP
#endif // HAVE_MKSTEMP/!HAVE_MKSTEMP
#endif // Windows/!Windows
if ( path.empty() )
{
wxLogSysError(_("Failed to create a temporary file name"));
}
else
{
bool ok = true;
// open the file - of course, there is a race condition here, this is
// why we always prefer using mkstemp()...
#if wxUSE_FILE
if ( fileTemp && !fileTemp->IsOpened() )
{
*deleteOnClose = wantDeleteOnClose;
int fd = wxTempOpen(path, deleteOnClose);
if (fd != -1)
fileTemp->Attach(fd);
else
ok = false;
}
#endif
#if wxUSE_FFILE
if ( ffileTemp && !ffileTemp->IsOpened() )
{
*deleteOnClose = wantDeleteOnClose;
ok = wxTempOpen(ffileTemp, path, deleteOnClose);
}
#endif
if ( !ok )
{
// FIXME: If !ok here should we loop and try again with another
// file name? That is the standard recourse if open(O_EXCL)
// fails, though of course it should be protected against
// possible infinite looping too.
wxLogError(_("Failed to open temporary file."));
path.clear();
}
}
return path;
}
static bool wxCreateTempImpl(
const wxString& prefix,
WXFILEARGS(wxFile *fileTemp, wxFFile *ffileTemp),
wxString *name)
{
bool deleteOnClose = true;
*name = wxCreateTempImpl(prefix,
WXFILEARGS(fileTemp, ffileTemp),
&deleteOnClose);
bool ok = !name->empty();
if (deleteOnClose)
name->clear();
#ifdef __UNIX__
else if (ok && wxRemoveFile(*name))
name->clear();
#endif
return ok;
}
static void wxAssignTempImpl(
wxFileName *fn,
const wxString& prefix,
WXFILEARGS(wxFile *fileTemp, wxFFile *ffileTemp))
{
wxString tempname;
tempname = wxCreateTempImpl(prefix, WXFILEARGS(fileTemp, ffileTemp));
if ( tempname.empty() )
{
// error, failed to get temp file name
fn->Clear();
}
else // ok
{
fn->Assign(tempname);
}
}
void wxFileName::AssignTempFileName(const wxString& prefix)
{
wxAssignTempImpl(this, prefix, WXFILEARGS(NULL, NULL));
}
/* static */
wxString wxFileName::CreateTempFileName(const wxString& prefix)
{
return wxCreateTempImpl(prefix, WXFILEARGS(NULL, NULL));
}
#endif // wxUSE_FILE || wxUSE_FFILE
#if wxUSE_FILE
wxString wxCreateTempFileName(const wxString& prefix,
wxFile *fileTemp,
bool *deleteOnClose)
{
return wxCreateTempImpl(prefix, WXFILEARGS(fileTemp, NULL), deleteOnClose);
}
bool wxCreateTempFile(const wxString& prefix,
wxFile *fileTemp,
wxString *name)
{
return wxCreateTempImpl(prefix, WXFILEARGS(fileTemp, NULL), name);
}
void wxFileName::AssignTempFileName(const wxString& prefix, wxFile *fileTemp)
{
wxAssignTempImpl(this, prefix, WXFILEARGS(fileTemp, NULL));
}
/* static */
wxString
wxFileName::CreateTempFileName(const wxString& prefix, wxFile *fileTemp)
{
return wxCreateTempFileName(prefix, fileTemp);
}
#endif // wxUSE_FILE
#if wxUSE_FFILE
wxString wxCreateTempFileName(const wxString& prefix,
wxFFile *fileTemp,
bool *deleteOnClose)
{
return wxCreateTempImpl(prefix, WXFILEARGS(NULL, fileTemp), deleteOnClose);
}
bool wxCreateTempFile(const wxString& prefix,
wxFFile *fileTemp,
wxString *name)
{
return wxCreateTempImpl(prefix, WXFILEARGS(NULL, fileTemp), name);
}
void wxFileName::AssignTempFileName(const wxString& prefix, wxFFile *fileTemp)
{
wxAssignTempImpl(this, prefix, WXFILEARGS(NULL, fileTemp));
}
/* static */
wxString
wxFileName::CreateTempFileName(const wxString& prefix, wxFFile *fileTemp)
{
return wxCreateTempFileName(prefix, fileTemp);
}
#endif // wxUSE_FFILE
// ----------------------------------------------------------------------------
// directory operations
// ----------------------------------------------------------------------------
// helper of GetTempDir(): check if the given directory exists and return it if
// it does or an empty string otherwise
namespace
{
wxString CheckIfDirExists(const wxString& dir)
{
return wxFileName::DirExists(dir) ? dir : wxString();
}
} // anonymous namespace
wxString wxFileName::GetTempDir()
{
// first try getting it from environment: this allows overriding the values
// used by default if the user wants to create temporary files in another
// directory
wxString dir = CheckIfDirExists(wxGetenv("TMPDIR"));
if ( dir.empty() )
{
dir = CheckIfDirExists(wxGetenv("TMP"));
if ( dir.empty() )
dir = CheckIfDirExists(wxGetenv("TEMP"));
}
// if no environment variables are set, use the system default
if ( dir.empty() )
{
#if defined(__WXWINCE__)
dir = CheckIfDirExists(wxT("\\temp"));
#elif defined(__WINDOWS__) && !defined(__WXMICROWIN__)
if ( !::GetTempPath(MAX_PATH, wxStringBuffer(dir, MAX_PATH + 1)) )
{
wxLogLastError(wxT("GetTempPath"));
}
#elif defined(__WXMAC__) && wxOSX_USE_CARBON
dir = wxMacFindFolderNoSeparator(short(kOnSystemDisk), kTemporaryFolderType, kCreateFolder);
#endif // systems with native way
}
else // we got directory from an environment variable
{
// remove any trailing path separators, we don't want to ever return
// them from this function for consistency
const size_t lastNonSep = dir.find_last_not_of(GetPathSeparators());
if ( lastNonSep == wxString::npos )
{
// the string consists entirely of separators, leave only one
dir = GetPathSeparator();
}
else
{
dir.erase(lastNonSep + 1);
}
}
// fall back to hard coded value
if ( dir.empty() )
{
#ifdef __UNIX_LIKE__
dir = CheckIfDirExists("/tmp");
if ( dir.empty() )
#endif // __UNIX_LIKE__
dir = ".";
}
return dir;
}
bool wxFileName::Mkdir( int perm, int flags ) const
{
return wxFileName::Mkdir(GetPath(), perm, flags);
}
bool wxFileName::Mkdir( const wxString& dir, int perm, int flags )
{
if ( flags & wxPATH_MKDIR_FULL )
{
// split the path in components
wxFileName filename;
filename.AssignDir(dir);
wxString currPath;
if ( filename.HasVolume())
{
currPath << wxGetVolumeString(filename.GetVolume(), wxPATH_NATIVE);
}
wxArrayString dirs = filename.GetDirs();
size_t count = dirs.GetCount();
for ( size_t i = 0; i < count; i++ )
{
if ( i > 0 || filename.IsAbsolute() )
currPath += wxFILE_SEP_PATH;
currPath += dirs[i];
if (!DirExists(currPath))
{
if (!wxMkdir(currPath, perm))
{
// no need to try creating further directories
return false;
}
}
}
return true;
}
return ::wxMkdir( dir, perm );
}
bool wxFileName::Rmdir(int flags) const
{
return wxFileName::Rmdir( GetPath(), flags );
}
bool wxFileName::Rmdir(const wxString& dir, int flags)
{
#ifdef __WINDOWS__
if ( flags & wxPATH_RMDIR_RECURSIVE )
{
// SHFileOperation needs double null termination string
// but without separator at the end of the path
wxString path(dir);
if ( path.Last() == wxFILE_SEP_PATH )
path.RemoveLast();
path += wxT('\0');
SHFILEOPSTRUCT fileop;
wxZeroMemory(fileop);
fileop.wFunc = FO_DELETE;
fileop.pFrom = path.t_str();
fileop.fFlags = FOF_SILENT | FOF_NOCONFIRMATION;
#ifndef __WXWINCE__
// FOF_NOERRORUI is not defined in WinCE
fileop.fFlags |= FOF_NOERRORUI;
#endif
int ret = SHFileOperation(&fileop);
if ( ret != 0 )
{
// SHFileOperation may return non-Win32 error codes, so the error
// message can be incorrect
wxLogApiError(wxT("SHFileOperation"), ret);
return false;
}
return true;
}
else if ( flags & wxPATH_RMDIR_FULL )
#else // !__WINDOWS__
if ( flags != 0 ) // wxPATH_RMDIR_FULL or wxPATH_RMDIR_RECURSIVE
#endif // !__WINDOWS__
{
#ifndef __WINDOWS__
if ( flags & wxPATH_RMDIR_RECURSIVE )
{
// When deleting the tree recursively, we are supposed to delete
// this directory itself even when it is a symlink -- but without
// following it. Do it here as wxRmdir() would simply follow if
// called for a symlink.
if ( wxFileName::Exists(dir, wxFILE_EXISTS_SYMLINK) )
{
return wxRemoveFile(dir);
}
}
#endif // !__WINDOWS__
wxString path(dir);
if ( path.Last() != wxFILE_SEP_PATH )
path += wxFILE_SEP_PATH;
wxDir d(path);
if ( !d.IsOpened() )
return false;
wxString filename;
// First delete all subdirectories: notice that we don't follow
// symbolic links, potentially leading outside this directory, to avoid
// unpleasant surprises.
bool cont = d.GetFirst(&filename, wxString(),
wxDIR_DIRS | wxDIR_HIDDEN | wxDIR_NO_FOLLOW);
while ( cont )
{
wxFileName::Rmdir(path + filename, flags);
cont = d.GetNext(&filename);
}
#ifndef __WINDOWS__
if ( flags & wxPATH_RMDIR_RECURSIVE )
{
// Delete all files too and, for the same reasons as above, don't
// follow symlinks which could refer to the files outside of this
// directory and just delete the symlinks themselves.
cont = d.GetFirst(&filename, wxString(),
wxDIR_FILES | wxDIR_HIDDEN | wxDIR_NO_FOLLOW);
while ( cont )
{
::wxRemoveFile(path + filename);
cont = d.GetNext(&filename);
}
}
#endif // !__WINDOWS__
}
return ::wxRmdir(dir);
}
// ----------------------------------------------------------------------------
// path normalization
// ----------------------------------------------------------------------------
bool wxFileName::Normalize(int flags,
const wxString& cwd,
wxPathFormat format)
{
// deal with env vars renaming first as this may seriously change the path
if ( flags & wxPATH_NORM_ENV_VARS )
{
wxString pathOrig = GetFullPath(format);
wxString path = wxExpandEnvVars(pathOrig);
if ( path != pathOrig )
{
Assign(path);
}
}
// the existing path components
wxArrayString dirs = GetDirs();
// the path to prepend in front to make the path absolute
wxFileName curDir;
format = GetFormat(format);
// set up the directory to use for making the path absolute later
if ( (flags & wxPATH_NORM_ABSOLUTE) && !IsAbsolute(format) )
{
if ( cwd.empty() )
{
curDir.AssignCwd(GetVolume());
}
else // cwd provided
{
curDir.AssignDir(cwd);
}
}
// handle ~ stuff under Unix only
if ( (format == wxPATH_UNIX) && (flags & wxPATH_NORM_TILDE) && m_relative )
{
if ( !dirs.IsEmpty() )
{
wxString dir = dirs[0u];
if ( !dir.empty() && dir[0u] == wxT('~') )
{
// to make the path absolute use the home directory
curDir.AssignDir(wxGetUserHome(dir.c_str() + 1));
dirs.RemoveAt(0u);
}
}
}
// transform relative path into abs one
if ( curDir.IsOk() )
{
// this path may be relative because it doesn't have the volume name
// and still have m_relative=true; in this case we shouldn't modify
// our directory components but just set the current volume
if ( !HasVolume() && curDir.HasVolume() )
{
SetVolume(curDir.GetVolume());
if ( !m_relative )
{
// yes, it was the case - we don't need curDir then
curDir.Clear();
}
}
// finally, prepend curDir to the dirs array
wxArrayString dirsNew = curDir.GetDirs();
WX_PREPEND_ARRAY(dirs, dirsNew);
// if we used e.g. tilde expansion previously and wxGetUserHome didn't
// return for some reason an absolute path, then curDir maybe not be absolute!
if ( !curDir.m_relative )
{
// we have prepended an absolute path and thus we are now an absolute
// file name too
m_relative = false;
}
// else if (flags & wxPATH_NORM_ABSOLUTE):
// should we warn the user that we didn't manage to make the path absolute?
}
// now deal with ".", ".." and the rest
m_dirs.Empty();
size_t count = dirs.GetCount();
for ( size_t n = 0; n < count; n++ )
{
wxString dir = dirs[n];
if ( flags & wxPATH_NORM_DOTS )
{
if ( dir == wxT(".") )
{
// just ignore
continue;
}
if ( dir == wxT("..") )
{
if ( m_dirs.empty() )
{
// We have more ".." than directory components so far.
// Don't treat this as an error as the path could have been
// entered by user so try to handle it reasonably: if the
// path is absolute, just ignore the extra ".." because
// "/.." is the same as "/". Otherwise, i.e. for relative
// paths, keep ".." unchanged because removing it would
// modify the file a relative path refers to.
if ( !m_relative )
continue;
}
else // Normal case, go one step up.
{
m_dirs.pop_back();
continue;
}
}
}
m_dirs.Add(dir);
}
#if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
if ( (flags & wxPATH_NORM_SHORTCUT) )
{
wxString filename;
if (GetShortcutTarget(GetFullPath(format), filename))
{
m_relative = false;
Assign(filename);
}
}
#endif
#if defined(__WIN32__)
if ( (flags & wxPATH_NORM_LONG) && (format == wxPATH_DOS) )
{
Assign(GetLongPath());
}
#endif // Win32
// Change case (this should be kept at the end of the function, to ensure
// that the path doesn't change any more after we normalize its case)
if ( (flags & wxPATH_NORM_CASE) && !IsCaseSensitive(format) )
{
m_volume.MakeLower();
m_name.MakeLower();
m_ext.MakeLower();
// directory entries must be made lower case as well
count = m_dirs.GetCount();
for ( size_t i = 0; i < count; i++ )
{
m_dirs[i].MakeLower();
}
}
return true;
}
#ifndef __WXWINCE__
bool wxFileName::ReplaceEnvVariable(const wxString& envname,
const wxString& replacementFmtString,
wxPathFormat format)
{
// look into stringForm for the contents of the given environment variable
wxString val;
if (envname.empty() ||
!wxGetEnv(envname, &val))
return false;
if (val.empty())
return false;
wxString stringForm = GetPath(wxPATH_GET_VOLUME, format);
// do not touch the file name and the extension
wxString replacement = wxString::Format(replacementFmtString, envname);
stringForm.Replace(val, replacement);
// Now assign ourselves the modified path:
Assign(stringForm, GetFullName(), format);
return true;
}
#endif
bool wxFileName::ReplaceHomeDir(wxPathFormat format)
{
wxString homedir = wxGetHomeDir();
if (homedir.empty())
return false;
wxString stringForm = GetPath(wxPATH_GET_VOLUME, format);
// do not touch the file name and the extension
stringForm.Replace(homedir, "~");
// Now assign ourselves the modified path:
Assign(stringForm, GetFullName(), format);
return true;
}
// ----------------------------------------------------------------------------
// get the shortcut target
// ----------------------------------------------------------------------------
// WinCE (3) doesn't have CLSID_ShellLink, IID_IShellLink definitions.
// The .lnk file is a plain text file so it should be easy to
// make it work. Hint from Google Groups:
// "If you open up a lnk file, you'll see a
// number, followed by a pound sign (#), followed by more text. The
// number is the number of characters that follows the pound sign. The
// characters after the pound sign are the command line (which _can_
// include arguments) to be executed. Any path (e.g. \windows\program
// files\myapp.exe) that includes spaces needs to be enclosed in
// quotation marks."
#if defined(__WIN32__) && !defined(__WXWINCE__) && wxUSE_OLE
// The following lines are necessary under WinCE
// #include "wx/msw/private.h"
// #include <ole2.h>
#include <shlobj.h>
#if defined(__WXWINCE__)
#include <shlguid.h>
#endif
bool wxFileName::GetShortcutTarget(const wxString& shortcutPath,
wxString& targetFilename,
wxString* arguments) const
{
wxString path, file, ext;
wxFileName::SplitPath(shortcutPath, & path, & file, & ext);
HRESULT hres;
IShellLink* psl;
bool success = false;
// Assume it's not a shortcut if it doesn't end with lnk
if (ext.CmpNoCase(wxT("lnk"))!=0)
return false;
// create a ShellLink object
hres = CoCreateInstance(CLSID_ShellLink, NULL, CLSCTX_INPROC_SERVER,
IID_IShellLink, (LPVOID*) &psl);
if (SUCCEEDED(hres))
{
IPersistFile* ppf;
hres = psl->QueryInterface( IID_IPersistFile, (LPVOID *) &ppf);
if (SUCCEEDED(hres))
{
WCHAR wsz[MAX_PATH];
MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, shortcutPath.mb_str(), -1, wsz,
MAX_PATH);
hres = ppf->Load(wsz, 0);
ppf->Release();
if (SUCCEEDED(hres))
{
wxChar buf[2048];
// Wrong prototype in early versions
#if defined(__MINGW32__) && !wxCHECK_W32API_VERSION(2, 2)
psl->GetPath((CHAR*) buf, 2048, NULL, SLGP_UNCPRIORITY);
#else
psl->GetPath(buf, 2048, NULL, SLGP_UNCPRIORITY);
#endif
targetFilename = wxString(buf);
success = (shortcutPath != targetFilename);
psl->GetArguments(buf, 2048);
wxString args(buf);
if (!args.empty() && arguments)
{
*arguments = args;
}
}
}
psl->Release();
}
return success;
}
#endif // __WIN32__ && !__WXWINCE__
// ----------------------------------------------------------------------------
// absolute/relative paths
// ----------------------------------------------------------------------------
bool wxFileName::IsAbsolute(wxPathFormat format) const
{
// unix paths beginning with ~ are reported as being absolute
if ( format == wxPATH_UNIX )
{
if ( !m_dirs.IsEmpty() )
{
wxString dir = m_dirs[0u];
if (!dir.empty() && dir[0u] == wxT('~'))
return true;
}
}
// if our path doesn't start with a path separator, it's not an absolute
// path
if ( m_relative )
return false;
if ( !GetVolumeSeparator(format).empty() )
{
// this format has volumes and an absolute path must have one, it's not
// enough to have the full path to be an absolute file under Windows
if ( GetVolume().empty() )
return false;
}
return true;
}
bool wxFileName::MakeRelativeTo(const wxString& pathBase, wxPathFormat format)
{
wxFileName fnBase = wxFileName::DirName(pathBase, format);
// get cwd only once - small time saving
wxString cwd = wxGetCwd();
Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
fnBase.Normalize(wxPATH_NORM_ALL & ~wxPATH_NORM_CASE, cwd, format);
bool withCase = IsCaseSensitive(format);
// we can't do anything if the files live on different volumes
if ( !GetVolume().IsSameAs(fnBase.GetVolume(), withCase) )
{
// nothing done
return false;
}
// same drive, so we don't need our volume
m_volume.clear();
// remove common directories starting at the top
while ( !m_dirs.IsEmpty() && !fnBase.m_dirs.IsEmpty() &&
m_dirs[0u].IsSameAs(fnBase.m_dirs[0u], withCase) )
{
m_dirs.RemoveAt(0);
fnBase.m_dirs.RemoveAt(0);
}
// add as many ".." as needed
size_t count = fnBase.m_dirs.GetCount();
for ( size_t i = 0; i < count; i++ )
{
m_dirs.Insert(wxT(".."), 0u);
}
if ( format == wxPATH_UNIX || format == wxPATH_DOS )
{
// a directory made relative with respect to itself is '.' under Unix
// and DOS, by definition (but we don't have to insert "./" for the
// files)
if ( m_dirs.IsEmpty() && IsDir() )
{
m_dirs.Add(wxT('.'));
}
}
m_relative = true;
// we were modified
return true;
}
// ----------------------------------------------------------------------------
// filename kind tests
// ----------------------------------------------------------------------------
bool wxFileName::SameAs(const wxFileName& filepath, wxPathFormat format) const
{
wxFileName fn1 = *this,
fn2 = filepath;
// get cwd only once - small time saving
wxString cwd = wxGetCwd();
fn1.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
fn2.Normalize(wxPATH_NORM_ALL | wxPATH_NORM_CASE, cwd, format);
if ( fn1.GetFullPath() == fn2.GetFullPath() )
return true;
#if defined(__UNIX__)
wxStructStat st1, st2;
if ( StatAny(st1, fn1) && StatAny(st2, fn2) )
{
if ( st1.st_ino == st2.st_ino && st1.st_dev == st2.st_dev )
return true;
}
//else: It's not an error if one or both files don't exist.
#endif // defined __UNIX__
return false;
}
/* static */
bool wxFileName::IsCaseSensitive( wxPathFormat format )
{
// only Unix filenames are truly case-sensitive
return GetFormat(format) == wxPATH_UNIX;
}
/* static */
wxString wxFileName::GetForbiddenChars(wxPathFormat format)
{
// Inits to forbidden characters that are common to (almost) all platforms.
wxString strForbiddenChars = wxT("*?");
// If asserts, wxPathFormat has been changed. In case of a new path format
// addition, the following code might have to be updated.
wxCOMPILE_TIME_ASSERT(wxPATH_MAX == 5, wxPathFormatChanged);
switch ( GetFormat(format) )
{
default :
wxFAIL_MSG( wxT("Unknown path format") );
// !! Fall through !!
case wxPATH_UNIX:
break;
case wxPATH_MAC:
// On a Mac even names with * and ? are allowed (Tested with OS
// 9.2.1 and OS X 10.2.5)
strForbiddenChars = wxEmptyString;
break;
case wxPATH_DOS:
strForbiddenChars += wxT("\\/:\"<>|");
break;
case wxPATH_VMS:
break;
}
return strForbiddenChars;
}
/* static */
wxString wxFileName::GetVolumeSeparator(wxPathFormat WXUNUSED_IN_WINCE(format))
{
#ifdef __WXWINCE__
return wxEmptyString;
#else
wxString sepVol;
if ( (GetFormat(format) == wxPATH_DOS) ||
(GetFormat(format) == wxPATH_VMS) )
{
sepVol = wxFILE_SEP_DSK;
}
//else: leave empty
return sepVol;
#endif
}
/* static */
wxString wxFileName::GetPathSeparators(wxPathFormat format)
{
wxString seps;
switch ( GetFormat(format) )
{
case wxPATH_DOS:
// accept both as native APIs do but put the native one first as
// this is the one we use in GetFullPath()
seps << wxFILE_SEP_PATH_DOS << wxFILE_SEP_PATH_UNIX;
break;
default:
wxFAIL_MSG( wxT("Unknown wxPATH_XXX style") );
// fall through
case wxPATH_UNIX:
seps = wxFILE_SEP_PATH_UNIX;
break;
case wxPATH_MAC:
seps = wxFILE_SEP_PATH_MAC;
break;
case wxPATH_VMS:
seps = wxFILE_SEP_PATH_VMS;
break;
}
return seps;
}
/* static */
wxString wxFileName::GetPathTerminators(wxPathFormat format)
{
format = GetFormat(format);
// under VMS the end of the path is ']', not the path separator used to
// separate the components
return format == wxPATH_VMS ? wxString(wxT(']')) : GetPathSeparators(format);
}
/* static */
bool wxFileName::IsPathSeparator(wxChar ch, wxPathFormat format)
{
// wxString::Find() doesn't work as expected with NUL - it will always find
// it, so test for it separately
return ch != wxT('\0') && GetPathSeparators(format).Find(ch) != wxNOT_FOUND;
}
/* static */
bool
wxFileName::IsMSWUniqueVolumeNamePath(const wxString& path, wxPathFormat format)
{
// return true if the format used is the DOS/Windows one and the string begins
// with a Windows unique volume name ("\\?\Volume{guid}\")
return format == wxPATH_DOS &&
path.length() >= wxMSWUniqueVolumePrefixLength &&
path.StartsWith(wxS("\\\\?\\Volume{")) &&
path[wxMSWUniqueVolumePrefixLength - 1] == wxFILE_SEP_PATH_DOS;
}
// ----------------------------------------------------------------------------
// path components manipulation
// ----------------------------------------------------------------------------
/* static */ bool wxFileName::IsValidDirComponent(const wxString& dir)
{
if ( dir.empty() )
{
wxFAIL_MSG( wxT("empty directory passed to wxFileName::InsertDir()") );
return false;
}
const size_t len = dir.length();
for ( size_t n = 0; n < len; n++ )
{
if ( dir[n] == GetVolumeSeparator() || IsPathSeparator(dir[n]) )
{
wxFAIL_MSG( wxT("invalid directory component in wxFileName") );
return false;
}
}
return true;
}
void wxFileName::AppendDir( const wxString& dir )
{
if ( IsValidDirComponent(dir) )
m_dirs.Add( dir );
}
void wxFileName::PrependDir( const wxString& dir )
{
InsertDir(0, dir);
}
void wxFileName::InsertDir(size_t before, const wxString& dir)
{
if ( IsValidDirComponent(dir) )
m_dirs.Insert(dir, before);
}
void wxFileName::RemoveDir(size_t pos)
{
m_dirs.RemoveAt(pos);
}
// ----------------------------------------------------------------------------
// accessors
// ----------------------------------------------------------------------------
void wxFileName::SetFullName(const wxString& fullname)
{
SplitPath(fullname, NULL /* no volume */, NULL /* no path */,
&m_name, &m_ext, &m_hasExt);
}
wxString wxFileName::GetFullName() const
{
wxString fullname = m_name;
if ( m_hasExt )
{
fullname << wxFILE_SEP_EXT << m_ext;
}
return fullname;
}
wxString wxFileName::GetPath( int flags, wxPathFormat format ) const
{
format = GetFormat( format );
wxString fullpath;
// return the volume with the path as well if requested
if ( flags & wxPATH_GET_VOLUME )
{
fullpath += wxGetVolumeString(GetVolume(), format);
}
// the leading character
switch ( format )
{
case wxPATH_MAC:
if ( m_relative )
fullpath += wxFILE_SEP_PATH_MAC;
break;
case wxPATH_DOS:
if ( !m_relative )
fullpath += wxFILE_SEP_PATH_DOS;
break;
default:
wxFAIL_MSG( wxT("Unknown path format") );
// fall through
case wxPATH_UNIX:
if ( !m_relative )
{
fullpath += wxFILE_SEP_PATH_UNIX;
}
break;
case wxPATH_VMS:
// no leading character here but use this place to unset
// wxPATH_GET_SEPARATOR flag: under VMS it doesn't make sense
// as, if I understand correctly, there should never be a dot
// before the closing bracket
flags &= ~wxPATH_GET_SEPARATOR;
}
if ( m_dirs.empty() )
{
// there is nothing more
return fullpath;
}
// then concatenate all the path components using the path separator
if ( format == wxPATH_VMS )
{
fullpath += wxT('[');
}
const size_t dirCount = m_dirs.GetCount();
for ( size_t i = 0; i < dirCount; i++ )
{
switch (format)
{
case wxPATH_MAC:
if ( m_dirs[i] == wxT(".") )
{
// skip appending ':', this shouldn't be done in this
// case as "::" is interpreted as ".." under Unix
continue;
}
// convert back from ".." to nothing
if ( !m_dirs[i].IsSameAs(wxT("..")) )
fullpath += m_dirs[i];
break;
default:
wxFAIL_MSG( wxT("Unexpected path format") );
// still fall through
case wxPATH_DOS:
case wxPATH_UNIX:
fullpath += m_dirs[i];
break;
case wxPATH_VMS:
// TODO: What to do with ".." under VMS
// convert back from ".." to nothing
if ( !m_dirs[i].IsSameAs(wxT("..")) )
fullpath += m_dirs[i];
break;
}
if ( (flags & wxPATH_GET_SEPARATOR) || (i != dirCount - 1) )
fullpath += GetPathSeparator(format);
}
if ( format == wxPATH_VMS )
{
fullpath += wxT(']');
}
return fullpath;
}
wxString wxFileName::GetFullPath( wxPathFormat format ) const
{
// we already have a function to get the path
wxString fullpath = GetPath(wxPATH_GET_VOLUME | wxPATH_GET_SEPARATOR,
format);
// now just add the file name and extension to it
fullpath += GetFullName();
return fullpath;
}
// Return the short form of the path (returns identity on non-Windows platforms)
wxString wxFileName::GetShortPath() const
{
wxString path(GetFullPath());
#if defined(__WINDOWS__) && defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
DWORD sz = ::GetShortPathName(path.t_str(), NULL, 0);
if ( sz != 0 )
{
wxString pathOut;
if ( ::GetShortPathName
(
path.t_str(),
wxStringBuffer(pathOut, sz),
sz
) != 0 )
{
return pathOut;
}
}
#endif // Windows
return path;
}
// Return the long form of the path (returns identity on non-Windows platforms)
wxString wxFileName::GetLongPath() const
{
wxString pathOut,
path = GetFullPath();
#if defined(__WIN32__) && !defined(__WXWINCE__) && !defined(__WXMICROWIN__)
#if wxUSE_DYNLIB_CLASS
typedef DWORD (WINAPI *GET_LONG_PATH_NAME)(const wxChar *, wxChar *, DWORD);
// this is MT-safe as in the worst case we're going to resolve the function
// twice -- but as the result is the same in both threads, it's ok
static GET_LONG_PATH_NAME s_pfnGetLongPathName = NULL;
if ( !s_pfnGetLongPathName )
{
static bool s_triedToLoad = false;
if ( !s_triedToLoad )
{
s_triedToLoad = true;
wxDynamicLibrary dllKernel(wxT("kernel32"));
const wxChar* GetLongPathName = wxT("GetLongPathName")
#if wxUSE_UNICODE
wxT("W");
#else // ANSI
wxT("A");
#endif // Unicode/ANSI
if ( dllKernel.HasSymbol(GetLongPathName) )
{
s_pfnGetLongPathName = (GET_LONG_PATH_NAME)
dllKernel.GetSymbol(GetLongPathName);
}
// note that kernel32.dll can be unloaded, it stays in memory
// anyhow as all Win32 programs link to it and so it's safe to call
// GetLongPathName() even after unloading it
}
}
if ( s_pfnGetLongPathName )
{
DWORD dwSize = (*s_pfnGetLongPathName)(path.t_str(), NULL, 0);
if ( dwSize > 0 )
{
if ( (*s_pfnGetLongPathName)
(
path.t_str(),
wxStringBuffer(pathOut, dwSize),
dwSize
) != 0 )
{
return pathOut;
}
}
}
#endif // wxUSE_DYNLIB_CLASS
// The OS didn't support GetLongPathName, or some other error.
// We need to call FindFirstFile on each component in turn.
WIN32_FIND_DATA findFileData;
HANDLE hFind;
if ( HasVolume() )
pathOut = GetVolume() +
GetVolumeSeparator(wxPATH_DOS) +
GetPathSeparator(wxPATH_DOS);
else
pathOut = wxEmptyString;
wxArrayString dirs = GetDirs();
dirs.Add(GetFullName());
wxString tmpPath;
size_t count = dirs.GetCount();
for ( size_t i = 0; i < count; i++ )
{
const wxString& dir = dirs[i];
// We're using pathOut to collect the long-name path, but using a
// temporary for appending the last path component which may be
// short-name
tmpPath = pathOut + dir;
// We must not process "." or ".." here as they would be (unexpectedly)
// replaced by the corresponding directory names so just leave them
// alone
//
// And we can't pass a drive and root dir to FindFirstFile (VZ: why?)
if ( tmpPath.empty() || dir == '.' || dir == ".." ||
tmpPath.Last() == GetVolumeSeparator(wxPATH_DOS) )
{
tmpPath += wxFILE_SEP_PATH;
pathOut = tmpPath;
continue;
}
hFind = ::FindFirstFile(tmpPath.t_str(), &findFileData);
if (hFind == INVALID_HANDLE_VALUE)
{
// Error: most likely reason is that path doesn't exist, so
// append any unprocessed parts and return
for ( i += 1; i < count; i++ )
tmpPath += wxFILE_SEP_PATH + dirs[i];
return tmpPath;
}
pathOut += findFileData.cFileName;
if ( (i < (count-1)) )
pathOut += wxFILE_SEP_PATH;
::FindClose(hFind);
}
#else // !Win32
pathOut = path;
#endif // Win32/!Win32
return pathOut;
}
wxPathFormat wxFileName::GetFormat( wxPathFormat format )
{
if (format == wxPATH_NATIVE)
{
#if defined(__WINDOWS__) || defined(__OS2__) || defined(__DOS__)
format = wxPATH_DOS;
#elif defined(__VMS)
format = wxPATH_VMS;
#else
format = wxPATH_UNIX;
#endif
}
return format;
}
#ifdef wxHAS_FILESYSTEM_VOLUMES
/* static */
wxString wxFileName::GetVolumeString(char drive, int flags)
{
wxASSERT_MSG( !(flags & ~wxPATH_GET_SEPARATOR), "invalid flag specified" );
wxString vol(drive);
vol += wxFILE_SEP_DSK;
if ( flags & wxPATH_GET_SEPARATOR )
vol += wxFILE_SEP_PATH;
return vol;
}
#endif // wxHAS_FILESYSTEM_VOLUMES
// ----------------------------------------------------------------------------
// path splitting function
// ----------------------------------------------------------------------------
/* static */
void
wxFileName::SplitVolume(const wxString& fullpathWithVolume,
wxString *pstrVolume,
wxString *pstrPath,
wxPathFormat format)
{
format = GetFormat(format);
wxString fullpath = fullpathWithVolume;
if ( IsMSWUniqueVolumeNamePath(fullpath, format) )
{
// special Windows unique volume names hack: transform
// \\?\Volume{guid}\path into Volume{guid}:path
// note: this check must be done before the check for UNC path
// we know the last backslash from the unique volume name is located
// there from IsMSWUniqueVolumeNamePath
fullpath[wxMSWUniqueVolumePrefixLength - 1] = wxFILE_SEP_DSK;
// paths starting with a unique volume name should always be absolute
fullpath.insert(wxMSWUniqueVolumePrefixLength, 1, wxFILE_SEP_PATH_DOS);
// remove the leading "\\?\" part
fullpath.erase(0, 4);
}
else if ( IsUNCPath(fullpath, format) )
{
// special Windows UNC paths hack: transform \\share\path into share:path
fullpath.erase(0, 2);
size_t posFirstSlash =
fullpath.find_first_of(GetPathTerminators(format));
if ( posFirstSlash != wxString::npos )
{
fullpath[posFirstSlash] = wxFILE_SEP_DSK;
// UNC paths are always absolute, right? (FIXME)
fullpath.insert(posFirstSlash + 1, 1, wxFILE_SEP_PATH_DOS);
}
}
// We separate the volume here
if ( format == wxPATH_DOS || format == wxPATH_VMS )
{
wxString sepVol = GetVolumeSeparator(format);
// we have to exclude the case of a colon in the very beginning of the
// string as it can't be a volume separator (nor can this be a valid
// DOS file name at all but we'll leave dealing with this to our caller)
size_t posFirstColon = fullpath.find_first_of(sepVol);
if ( posFirstColon && posFirstColon != wxString::npos )
{
if ( pstrVolume )
{
*pstrVolume = fullpath.Left(posFirstColon);
}
// remove the volume name and the separator from the full path
fullpath.erase(0, posFirstColon + sepVol.length());
}
}
if ( pstrPath )
*pstrPath = fullpath;
}
/* static */
void wxFileName::SplitPath(const wxString& fullpathWithVolume,
wxString *pstrVolume,
wxString *pstrPath,
wxString *pstrName,
wxString *pstrExt,
bool *hasExt,
wxPathFormat format)
{
format = GetFormat(format);
wxString fullpath;
SplitVolume(fullpathWithVolume, pstrVolume, &fullpath, format);
// find the positions of the last dot and last path separator in the path
size_t posLastDot = fullpath.find_last_of(wxFILE_SEP_EXT);
size_t posLastSlash = fullpath.find_last_of(GetPathTerminators(format));
// check whether this dot occurs at the very beginning of a path component
if ( (posLastDot != wxString::npos) &&
(posLastDot == 0 ||
IsPathSeparator(fullpath[posLastDot - 1]) ||
(format == wxPATH_VMS && fullpath[posLastDot - 1] == wxT(']'))) )
{
// dot may be (and commonly -- at least under Unix -- is) the first
// character of the filename, don't treat the entire filename as
// extension in this case
posLastDot = wxString::npos;
}
// if we do have a dot and a slash, check that the dot is in the name part
if ( (posLastDot != wxString::npos) &&
(posLastSlash != wxString::npos) &&
(posLastDot < posLastSlash) )
{
// the dot is part of the path, not the start of the extension
posLastDot = wxString::npos;
}
// now fill in the variables provided by user
if ( pstrPath )
{
if ( posLastSlash == wxString::npos )
{
// no path at all
pstrPath->Empty();
}
else
{
// take everything up to the path separator but take care to make
// the path equal to something like '/', not empty, for the files
// immediately under root directory
size_t len = posLastSlash;
// this rule does not apply to mac since we do not start with colons (sep)
// except for relative paths
if ( !len && format != wxPATH_MAC)
len++;
*pstrPath = fullpath.Left(len);
// special VMS hack: remove the initial bracket
if ( format == wxPATH_VMS )
{
if ( (*pstrPath)[0u] == wxT('[') )
pstrPath->erase(0, 1);
}
}
}
if ( pstrName )
{
// take all characters starting from the one after the last slash and
// up to, but excluding, the last dot
size_t nStart = posLastSlash == wxString::npos ? 0 : posLastSlash + 1;
size_t count;
if ( posLastDot == wxString::npos )
{
// take all until the end
count = wxString::npos;
}
else if ( posLastSlash == wxString::npos )
{
count = posLastDot;
}
else // have both dot and slash
{
count = posLastDot - posLastSlash - 1;
}
*pstrName = fullpath.Mid(nStart, count);
}
// finally deal with the extension here: we have an added complication that
// extension may be empty (but present) as in "foo." where trailing dot
// indicates the empty extension at the end -- and hence we must remember
// that we have it independently of pstrExt
if ( posLastDot == wxString::npos )
{
// no extension
if ( pstrExt )
pstrExt->clear();
if ( hasExt )
*hasExt = false;
}
else
{
// take everything after the dot
if ( pstrExt )
*pstrExt = fullpath.Mid(posLastDot + 1);
if ( hasExt )
*hasExt = true;
}
}
/* static */
void wxFileName::SplitPath(const wxString& fullpath,
wxString *path,
wxString *name,
wxString *ext,
wxPathFormat format)
{
wxString volume;
SplitPath(fullpath, &volume, path, name, ext, format);
if ( path )
{
path->Prepend(wxGetVolumeString(volume, format));
}
}
/* static */
wxString wxFileName::StripExtension(const wxString& fullpath)
{
wxFileName fn(fullpath);
fn.SetExt("");
return fn.GetFullPath();
}
// ----------------------------------------------------------------------------
// time functions
// ----------------------------------------------------------------------------
#if wxUSE_DATETIME
bool wxFileName::SetTimes(const wxDateTime *dtAccess,
const wxDateTime *dtMod,
const wxDateTime *dtCreate) const
{
#if defined(__WIN32__)
FILETIME ftAccess, ftCreate, ftWrite;
if ( dtCreate )
ConvertWxToFileTime(&ftCreate, *dtCreate);
if ( dtAccess )
ConvertWxToFileTime(&ftAccess, *dtAccess);
if ( dtMod )
ConvertWxToFileTime(&ftWrite, *dtMod);
wxString path;
int flags;
if ( IsDir() )
{
if ( wxGetOsVersion() == wxOS_WINDOWS_9X )
{
wxLogError(_("Setting directory access times is not supported "
"under this OS version"));
return false;
}
path = GetPath();
flags = FILE_FLAG_BACKUP_SEMANTICS;
}
else // file
{
path = GetFullPath();
flags = 0;
}
wxFileHandle fh(path, wxFileHandle::WriteAttr, flags);
if ( fh.IsOk() )
{
if ( ::SetFileTime(fh,
dtCreate ? &ftCreate : NULL,
dtAccess ? &ftAccess : NULL,
dtMod ? &ftWrite : NULL) )
{
return true;
}
}
#elif defined(__UNIX_LIKE__) || (defined(__DOS__) && defined(__WATCOMC__))
wxUnusedVar(dtCreate);
if ( !dtAccess && !dtMod )
{
// can't modify the creation time anyhow, don't try
return true;
}
// if dtAccess or dtMod is not specified, use the other one (which must be
// non NULL because of the test above) for both times
utimbuf utm;
utm.actime = dtAccess ? dtAccess->GetTicks() : dtMod->GetTicks();
utm.modtime = dtMod ? dtMod->GetTicks() : dtAccess->GetTicks();
if ( utime(GetFullPath().fn_str(), &utm) == 0 )
{
return true;
}
#else // other platform
wxUnusedVar(dtAccess);
wxUnusedVar(dtMod);
wxUnusedVar(dtCreate);
#endif // platforms
wxLogSysError(_("Failed to modify file times for '%s'"),
GetFullPath().c_str());
return false;
}
bool wxFileName::Touch() const
{
#if defined(__UNIX_LIKE__)
// under Unix touching file is simple: just pass NULL to utime()
if ( utime(GetFullPath().fn_str(), NULL) == 0 )
{
return true;
}
wxLogSysError(_("Failed to touch the file '%s'"), GetFullPath().c_str());
return false;
#else // other platform
wxDateTime dtNow = wxDateTime::Now();
return SetTimes(&dtNow, &dtNow, NULL /* don't change create time */);
#endif // platforms
}
bool wxFileName::GetTimes(wxDateTime *dtAccess,
wxDateTime *dtMod,
wxDateTime *dtCreate) const
{
#if defined(__WIN32__)
// we must use different methods for the files and directories under
// Windows as CreateFile(GENERIC_READ) doesn't work for the directories and
// CreateFile(FILE_FLAG_BACKUP_SEMANTICS) works -- but only under NT and
// not 9x
bool ok;
FILETIME ftAccess, ftCreate, ftWrite;
if ( IsDir() )
{
// implemented in msw/dir.cpp
extern bool wxGetDirectoryTimes(const wxString& dirname,
FILETIME *, FILETIME *, FILETIME *);
// we should pass the path without the trailing separator to
// wxGetDirectoryTimes()
ok = wxGetDirectoryTimes(GetPath(wxPATH_GET_VOLUME),
&ftAccess, &ftCreate, &ftWrite);
}
else // file
{
wxFileHandle fh(GetFullPath(), wxFileHandle::ReadAttr);
if ( fh.IsOk() )
{
ok = ::GetFileTime(fh,
dtCreate ? &ftCreate : NULL,
dtAccess ? &ftAccess : NULL,
dtMod ? &ftWrite : NULL) != 0;
}
else
{
ok = false;
}
}
if ( ok )
{
if ( dtCreate )
ConvertFileTimeToWx(dtCreate, ftCreate);
if ( dtAccess )
ConvertFileTimeToWx(dtAccess, ftAccess);
if ( dtMod )
ConvertFileTimeToWx(dtMod, ftWrite);
return true;
}
#elif defined(__UNIX_LIKE__) || defined(__WXMAC__) || defined(__OS2__) || (defined(__DOS__) && defined(__WATCOMC__))
// no need to test for IsDir() here
wxStructStat stBuf;
if ( StatAny(stBuf, *this) )
{
// Android defines st_*time fields as unsigned long, but time_t as long,
// hence the static_casts.
if ( dtAccess )
dtAccess->Set(static_cast<time_t>(stBuf.st_atime));
if ( dtMod )
dtMod->Set(static_cast<time_t>(stBuf.st_mtime));
if ( dtCreate )
dtCreate->Set(static_cast<time_t>(stBuf.st_ctime));
return true;
}
#else // other platform
wxUnusedVar(dtAccess);
wxUnusedVar(dtMod);
wxUnusedVar(dtCreate);
#endif // platforms
wxLogSysError(_("Failed to retrieve file times for '%s'"),
GetFullPath().c_str());
return false;
}
#endif // wxUSE_DATETIME
// ----------------------------------------------------------------------------
// file size functions
// ----------------------------------------------------------------------------
#if wxUSE_LONGLONG
/* static */
wxULongLong wxFileName::GetSize(const wxString &filename)
{
if (!wxFileExists(filename))
return wxInvalidSize;
#if defined(__WIN32__)
wxFileHandle f(filename, wxFileHandle::ReadAttr);
if (!f.IsOk())
return wxInvalidSize;
DWORD lpFileSizeHigh;
DWORD ret = GetFileSize(f, &lpFileSizeHigh);
if ( ret == INVALID_FILE_SIZE && ::GetLastError() != NO_ERROR )
return wxInvalidSize;
return wxULongLong(lpFileSizeHigh, ret);
#else // ! __WIN32__
wxStructStat st;
if (wxStat( filename, &st) != 0)
return wxInvalidSize;
return wxULongLong(st.st_size);
#endif
}
/* static */
wxString wxFileName::GetHumanReadableSize(const wxULongLong &bs,
const wxString &nullsize,
int precision,
wxSizeConvention conv)
{
// deal with trivial case first
if ( bs == 0 || bs == wxInvalidSize )
return nullsize;
// depending on the convention used the multiplier may be either 1000 or
// 1024 and the binary infix may be empty (for "KB") or "i" (for "KiB")
double multiplier = 1024.;
wxString biInfix;
switch ( conv )
{
case wxSIZE_CONV_TRADITIONAL:
// nothing to do, this corresponds to the default values of both
// the multiplier and infix string
break;
case wxSIZE_CONV_IEC:
biInfix = "i";
break;
case wxSIZE_CONV_SI:
multiplier = 1000;
break;
}
const double kiloByteSize = multiplier;
const double megaByteSize = multiplier * kiloByteSize;
const double gigaByteSize = multiplier * megaByteSize;
const double teraByteSize = multiplier * gigaByteSize;
const double bytesize = bs.ToDouble();
wxString result;
if ( bytesize < kiloByteSize )
result.Printf("%s B", bs.ToString());
else if ( bytesize < megaByteSize )
result.Printf("%.*f K%sB", precision, bytesize/kiloByteSize, biInfix);
else if (bytesize < gigaByteSize)
result.Printf("%.*f M%sB", precision, bytesize/megaByteSize, biInfix);
else if (bytesize < teraByteSize)
result.Printf("%.*f G%sB", precision, bytesize/gigaByteSize, biInfix);
else
result.Printf("%.*f T%sB", precision, bytesize/teraByteSize, biInfix);
return result;
}
wxULongLong wxFileName::GetSize() const
{
return GetSize(GetFullPath());
}
wxString wxFileName::GetHumanReadableSize(const wxString& failmsg,
int precision,
wxSizeConvention conv) const
{
return GetHumanReadableSize(GetSize(), failmsg, precision, conv);
}
#endif // wxUSE_LONGLONG
// ----------------------------------------------------------------------------
// Mac-specific functions
// ----------------------------------------------------------------------------
#if defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
namespace
{
class MacDefaultExtensionRecord
{
public:
MacDefaultExtensionRecord()
{
m_type =
m_creator = 0 ;
}
// default copy ctor, assignment operator and dtor are ok
MacDefaultExtensionRecord(const wxString& ext, OSType type, OSType creator)
: m_ext(ext)
{
m_type = type;
m_creator = creator;
}
wxString m_ext;
OSType m_type;
OSType m_creator;
};
WX_DECLARE_OBJARRAY(MacDefaultExtensionRecord, MacDefaultExtensionArray);
bool gMacDefaultExtensionsInited = false;
#include "wx/arrimpl.cpp"
WX_DEFINE_EXPORTED_OBJARRAY(MacDefaultExtensionArray);
MacDefaultExtensionArray gMacDefaultExtensions;
// load the default extensions
const MacDefaultExtensionRecord gDefaults[] =
{
MacDefaultExtensionRecord( "txt", 'TEXT', 'ttxt' ),
MacDefaultExtensionRecord( "tif", 'TIFF', '****' ),
MacDefaultExtensionRecord( "jpg", 'JPEG', '****' ),
};
void MacEnsureDefaultExtensionsLoaded()
{
if ( !gMacDefaultExtensionsInited )
{
// we could load the pc exchange prefs here too
for ( size_t i = 0 ; i < WXSIZEOF( gDefaults ) ; ++i )
{
gMacDefaultExtensions.Add( gDefaults[i] ) ;
}
gMacDefaultExtensionsInited = true;
}
}
} // anonymous namespace
bool wxFileName::MacSetTypeAndCreator( wxUint32 type , wxUint32 creator )
{
FSRef fsRef ;
FSCatalogInfo catInfo;
FileInfo *finfo ;
if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
{
if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
{
finfo = (FileInfo*)&catInfo.finderInfo;
finfo->fileType = type ;
finfo->fileCreator = creator ;
FSSetCatalogInfo( &fsRef, kFSCatInfoFinderInfo, &catInfo ) ;
return true ;
}
}
return false ;
}
bool wxFileName::MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator ) const
{
FSRef fsRef ;
FSCatalogInfo catInfo;
FileInfo *finfo ;
if ( wxMacPathToFSRef( GetFullPath() , &fsRef ) == noErr )
{
if ( FSGetCatalogInfo (&fsRef, kFSCatInfoFinderInfo, &catInfo, NULL, NULL, NULL) == noErr )
{
finfo = (FileInfo*)&catInfo.finderInfo;
*type = finfo->fileType ;
*creator = finfo->fileCreator ;
return true ;
}
}
return false ;
}
bool wxFileName::MacSetDefaultTypeAndCreator()
{
wxUint32 type , creator ;
if ( wxFileName::MacFindDefaultTypeAndCreator(GetExt() , &type ,
&creator ) )
{
return MacSetTypeAndCreator( type , creator ) ;
}
return false;
}
bool wxFileName::MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator )
{
MacEnsureDefaultExtensionsLoaded() ;
wxString extl = ext.Lower() ;
for( int i = gMacDefaultExtensions.Count() - 1 ; i >= 0 ; --i )
{
if ( gMacDefaultExtensions.Item(i).m_ext == extl )
{
*type = gMacDefaultExtensions.Item(i).m_type ;
*creator = gMacDefaultExtensions.Item(i).m_creator ;
return true ;
}
}
return false ;
}
void wxFileName::MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator )
{
MacEnsureDefaultExtensionsLoaded();
MacDefaultExtensionRecord rec(ext.Lower(), type, creator);
gMacDefaultExtensions.Add( rec );
}
#endif // defined( __WXOSX_MAC__ ) && wxOSX_USE_CARBON
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