wxWidgets/include/wx/filename.h

386 lines
14 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/filename.h
// Purpose: wxFileName - encapsulates a file path
// Author: Robert Roebling, Vadim Zeitlin
// Modified by:
// Created: 28.12.00
// RCS-ID: $Id$
// Copyright: (c) 2000 Robert Roebling
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_FILENAME_H_
#define _WX_FILENAME_H_
#ifdef __GNUG__
#pragma interface "filename.h"
#endif
#ifndef WX_PRECOMP
#include "wx/string.h"
#endif
/*
TODO:
1. support for drives under Windows
2. more file operations:
a) chmod()
b) [acm]time() - get and set
c) file size
d) file permissions with readable accessors for most common bits
such as IsReadable() &c
e) rename()?
3. SameFileAs() function to compare inodes under Unix
*/
// ridiculously enough, this will replace DirExists with wxDirExists etc
#include "wx/filefn.h"
#include "wx/datetime.h"
class WXDLLEXPORT wxFile;
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// the various values for the path format: this mainly affects the path
// separator but also whether or not the path has the drive part (as under
// Windows)
enum wxPathFormat
{
wxPATH_NATIVE = 0, // the path format for the current platform
wxPATH_UNIX,
wxPATH_MAC,
wxPATH_DOS,
wxPATH_VMS,
wxPATH_BEOS = wxPATH_UNIX,
wxPATH_WIN = wxPATH_DOS,
wxPATH_OS2 = wxPATH_DOS
};
// the kind of normalization to do with the file name: these values can be
// or'd together to perform several operations at once
enum wxPathNormalize
{
wxPATH_NORM_ENV_VARS = 0x0001, // replace env vars with their values
wxPATH_NORM_DOTS = 0x0002, // squeeze all .. and . and prepend cwd
wxPATH_NORM_TILDE = 0x0004, // Unix only: replace ~ and ~user
wxPATH_NORM_CASE = 0x0008, // if case insensitive => tolower
wxPATH_NORM_ABSOLUTE = 0x0010, // make the path absolute
wxPATH_NORM_LONG = 0x0020, // make the path the long form
wxPATH_NORM_ALL = 0x003f
};
// ----------------------------------------------------------------------------
// wxFileName: encapsulates a file path
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxFileName
{
public:
// constructors and assignment
// the usual stuff
wxFileName() { }
wxFileName( const wxFileName &filepath ) { Assign(filepath); }
// from a full filename: if it terminates with a '/', a directory path
// is contructed (the name will be empty), otherwise a file name and
// extension are extracted from it
wxFileName( const wxString& fullpath, wxPathFormat format = wxPATH_NATIVE )
{ Assign( fullpath, format ); }
// from a directory name and a file name
wxFileName(const wxString& path,
const wxString& name,
wxPathFormat format = wxPATH_NATIVE)
{ Assign(path, name, format); }
// from a volume, directory name, file base name and extension
wxFileName(const wxString& volume,
const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE)
{ Assign(volume, path, name, ext, format); }
// from a directory name, file base name and extension
wxFileName(const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE)
{ Assign(path, name, ext, format); }
// the same for delayed initialization
void Assign(const wxFileName& filepath);
void Assign(const wxString& fullpath,
wxPathFormat format = wxPATH_NATIVE);
void Assign(const wxString& volume,
const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE);
void Assign(const wxString& path,
const wxString& name,
wxPathFormat format = wxPATH_NATIVE);
void Assign(const wxString& path,
const wxString& name,
const wxString& ext,
wxPathFormat format = wxPATH_NATIVE)
{
// empty volume
Assign(_T(""), path, name, ext, format);
}
void AssignDir(const wxString& dir, wxPathFormat format = wxPATH_NATIVE);
// assorted assignment operators
wxFileName& operator=(const wxFileName& filename)
{ Assign(filename); return *this; }
wxFileName& operator=(const wxString& filename)
{ Assign(filename); return *this; }
// reset all components to default, uninitialized state
void Clear();
// static pseudo constructors
static wxFileName FileName(const wxString& file);
static wxFileName DirName(const wxString& dir);
// file tests
// is the filename valid at all?
bool IsOk() const { return !m_dirs.IsEmpty() || !m_name.IsEmpty(); }
// does the file with this name exists?
bool FileExists();
static bool FileExists( const wxString &file );
// does the directory with this name exists?
bool DirExists();
static bool DirExists( const wxString &dir );
// VZ: also need: IsDirWritable(), IsFileExecutable() &c (TODO)
// time functions
// set the file creation and last access/mod times
// (any of the pointers may be NULL)
bool SetTimes(const wxDateTime *dtCreate,
const wxDateTime *dtAccess,
const wxDateTime *dtMod);
// set the access and modification times to the current moment
bool Touch();
// return the last access, last modification and last change times
// (any of the pointers may be NULL)
bool GetTimes(wxDateTime *dtAccess,
wxDateTime *dtMod,
wxDateTime *dtChange) const;
// convenience wrapper: get just the last mod time of the file
wxDateTime GetModificationTime() const
{
wxDateTime dtMod;
(void)GetTimes(NULL, &dtMod, NULL);
return dtMod;
}
#ifdef __WXMAC__
bool MacSetTypeAndCreator( wxUint32 type , wxUint32 creator ) ;
bool MacGetTypeAndCreator( wxUint32 *type , wxUint32 *creator ) ;
// gets the 'common' type and creator for a certain extension
static bool MacFindDefaultTypeAndCreator( const wxString& ext , wxUint32 *type , wxUint32 *creator ) ;
// registers application defined extensions and their default type and creator
static void MacRegisterDefaultTypeAndCreator( const wxString& ext , wxUint32 type , wxUint32 creator ) ;
// looks up the appropriate type and creator from the registration and then sets
bool MacSetDefaultTypeAndCreator() ;
#endif
// various file/dir operations
// retrieve the value of the current working directory
void AssignCwd(const wxString& volume = wxEmptyString);
static wxString GetCwd(const wxString& volume = wxEmptyString);
// change the current working directory
bool SetCwd();
static bool SetCwd( const wxString &cwd );
// get the value of user home (Unix only mainly)
void AssignHomeDir();
static wxString GetHomeDir();
// get a temp file name starting with the specified prefix and open the
// file passed to us using this name for writing (atomically if
// possible)
void AssignTempFileName(const wxString& prefix, wxFile *fileTemp = NULL);
static wxString CreateTempFileName(const wxString& prefix,
wxFile *fileTemp = NULL);
// directory creation and removal.
// if full is TRUE, will try to make each directory in the path.
bool Mkdir( int perm = 0777, bool full = FALSE);
static bool Mkdir( const wxString &dir, int perm = 0777, bool full = FALSE );
bool Rmdir();
static bool Rmdir( const wxString &dir );
// operations on the path
// normalize the path: with the default flags value, the path will be
// made absolute, without any ".." and "." and all environment
// variables will be expanded in it
//
// this may be done using another (than current) value of cwd
bool Normalize(int flags = wxPATH_NORM_ALL,
const wxString& cwd = wxEmptyString,
wxPathFormat format = wxPATH_NATIVE);
// get a path path relative to the given base directory, i.e. opposite
// of Normalize
//
// pass an empty string to get a path relative to the working directory
//
// returns TRUE if the file name was modified, FALSE if we failed to do
// anything with it (happens when the file is on a different volume,
// for example)
bool MakeRelativeTo(const wxString& pathBase = _T(""),
wxPathFormat format = wxPATH_NATIVE);
// Comparison
// compares with the rules of this platform
bool SameAs(const wxFileName &filepath,
wxPathFormat format = wxPATH_NATIVE);
// uses the current platform settings
bool operator==(const wxFileName& filename) { return SameAs(filename); }
bool operator==(const wxString& filename)
{ return *this == wxFileName(filename); }
// are the file names of this type cases sensitive?
static bool IsCaseSensitive( wxPathFormat format = wxPATH_NATIVE );
// is this filename absolute?
bool IsAbsolute() const
{ return !m_relative; }
// is this filename relative?
bool IsRelative() const
{ return m_relative; }
// forcibly set the flag
void SetAbsolute()
{ m_relative = FALSE; }
void SetRelative()
{ m_relative = TRUE; }
// Information about path format
// get the string separating the volume from the path for this format
static wxString GetVolumeSeparator(wxPathFormat format = wxPATH_NATIVE);
// get the string of path separators for this format
static wxString GetPathSeparators(wxPathFormat format = wxPATH_NATIVE);
// is the char a path separator for this format?
static bool IsPathSeparator(wxChar ch, wxPathFormat format = wxPATH_NATIVE);
// FIXME: what exactly does this do?
bool IsWild( wxPathFormat format = wxPATH_NATIVE );
// Dir accessors
void AppendDir( const wxString &dir );
void PrependDir( const wxString &dir );
void InsertDir( int before, const wxString &dir );
void RemoveDir( int pos );
size_t GetDirCount() const { return m_dirs.GetCount(); }
// Other accessors
void SetExt( const wxString &ext ) { m_ext = ext; }
wxString GetExt() const { return m_ext; }
bool HasExt() const { return !m_ext.empty(); }
void SetName( const wxString &name ) { m_name = name; }
wxString GetName() const { return m_name; }
bool HasName() const { return !m_name.empty(); }
void SetVolume( const wxString &volume ) { m_volume = volume; }
wxString GetVolume() const { return m_volume; }
bool HasVolume() const { return !m_volume.empty(); }
// full name is the file name + extension (but without the path)
void SetFullName(const wxString& fullname);
wxString GetFullName() const;
const wxArrayString& GetDirs() const { return m_dirs; }
// Construct path only - possibly with the trailing separator
wxString GetPath( bool add_separator = FALSE,
wxPathFormat format = wxPATH_NATIVE ) const;
// Replace current path with this one
void SetPath( const wxString &path, wxPathFormat format = wxPATH_NATIVE );
// more readable synonym
wxString GetPathWithSep(wxPathFormat format = wxPATH_NATIVE ) const
{ return GetPath(TRUE /* add separator */, format); }
// Construct full path with name and ext
wxString GetFullPath( wxPathFormat format = wxPATH_NATIVE ) const;
// Return the short form of the path (returns identity on non-Windows platforms)
wxString GetShortPath() const;
// Return the long form of the path (returns identity on non-Windows platforms)
wxString GetLongPath() const;
// various helpers
// get the canonical path format for this platform
static wxPathFormat GetFormat( wxPathFormat format = wxPATH_NATIVE );
// split a fullpath into the volume, path, (base) name and extension
// (all of the pointers can be NULL)
static void SplitPath(const wxString& fullpath,
wxString *volume,
wxString *path,
wxString *name,
wxString *ext,
wxPathFormat format = wxPATH_NATIVE);
// compatibility version
static void SplitPath(const wxString& fullpath,
wxString *path,
wxString *name,
wxString *ext,
wxPathFormat format = wxPATH_NATIVE);
private:
// the drive/volume/device specification (always empty for Unix)
wxString m_volume;
// the path components of the file
wxArrayString m_dirs;
// the file name and extension (empty for directories)
wxString m_name,
m_ext;
// is the path relative
bool m_relative;
};
#endif // _WX_FILENAME_H_