bf973818a3
Also move wxSeekMode from interface/wx/ffile.h to filefn.h to be consistent with the header in which this enum is really defined. And document it better. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70675 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
552 lines
16 KiB
Objective-C
552 lines
16 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
|
||
// Name: filefn.h
|
||
// Purpose: interface of wxPathList and file functions
|
||
// Author: wxWidgets team
|
||
// RCS-ID: $Id$
|
||
// Licence: wxWindows licence
|
||
/////////////////////////////////////////////////////////////////////////////
|
||
|
||
/**
|
||
@class wxPathList
|
||
|
||
The path list is a convenient way of storing a number of directories, and
|
||
when presented with a filename without a directory, searching for an
|
||
existing file in those directories.
|
||
|
||
Be sure to look also at wxStandardPaths if you only want to search files in
|
||
some standard paths.
|
||
|
||
@library{wxbase}
|
||
@category{file}
|
||
|
||
@see wxArrayString, wxStandardPaths, wxFileName
|
||
*/
|
||
class wxPathList : public wxArrayString
|
||
{
|
||
public:
|
||
/**
|
||
Standard constructor.
|
||
*/
|
||
wxPathList();
|
||
|
||
/**
|
||
Constructs the object calling the Add() function.
|
||
*/
|
||
wxPathList(const wxArrayString& arr);
|
||
|
||
/**
|
||
Adds the given directory to the path list, if the @a path is not already in the list.
|
||
If the path cannot be normalized for some reason, it returns @false.
|
||
|
||
The @a path is always considered to be a directory but no existence checks will be
|
||
done on it (because if it doesn't exist, it could be created later and thus result a
|
||
valid path when FindValidPath() is called).
|
||
|
||
@note if the given path is relative, it won't be made absolute before adding it
|
||
(this is why FindValidPath() may return relative paths).
|
||
*/
|
||
bool Add(const wxString& path);
|
||
|
||
/**
|
||
Adds all elements of the given array as paths.
|
||
*/
|
||
void Add(const wxArrayString& arr);
|
||
|
||
/**
|
||
Finds the value of the given environment variable, and adds all paths
|
||
to the path list.
|
||
|
||
Useful for finding files in the @c PATH variable, for example.
|
||
*/
|
||
void AddEnvList(const wxString& env_variable);
|
||
|
||
/**
|
||
Given a full filename (with path), calls Add() with the path of the file.
|
||
*/
|
||
bool EnsureFileAccessible(const wxString& filename);
|
||
|
||
/**
|
||
Like FindValidPath() but this function always returns an absolute path
|
||
(eventually prepending the current working directory to the value returned
|
||
wxPathList::FindValidPath()) or an empty string.
|
||
*/
|
||
wxString FindAbsoluteValidPath(const wxString& file) const;
|
||
|
||
/**
|
||
Searches the given file in all paths stored in this class.
|
||
|
||
The first path which concatenated to the given string points to an existing
|
||
file (see wxFileExists()) is returned.
|
||
|
||
If the file wasn't found in any of the stored paths, an empty string is returned.
|
||
|
||
The given string must be a file name, eventually with a path prefix (if the path
|
||
prefix is absolute, only its name will be searched); i.e. it must not end with
|
||
a directory separator (see wxFileName::GetPathSeparator) otherwise an assertion
|
||
will fail.
|
||
|
||
The returned path may be relative to the current working directory.
|
||
|
||
Note in fact that wxPathList can be used to store both relative and absolute
|
||
paths so that if you added relative paths, then the current working directory
|
||
(see wxGetCwd() and wxSetWorkingDirectory()) may affect the value returned
|
||
by this function!
|
||
*/
|
||
wxString FindValidPath(const wxString& file) const;
|
||
};
|
||
|
||
|
||
|
||
// ============================================================================
|
||
// Global functions/macros
|
||
// ============================================================================
|
||
|
||
/** @addtogroup group_funcmacro_file */
|
||
//@{
|
||
|
||
/**
|
||
A special return value of many wxWidgets classes to indicate that
|
||
an invalid offset was given.
|
||
*/
|
||
const int wxInvalidOffset = -1;
|
||
|
||
/**
|
||
The type used to store and provide byte offsets or byte sizes for files or streams.
|
||
|
||
It is type-defined as @c off_t on POSIX platforms
|
||
(see http://www.gnu.org/software/libc/manual/html_node/File-Position-Primitive.html)
|
||
or to @c wxLongLong_t on Windows when @c wxHAS_HUGE_FILES is defined.
|
||
*/
|
||
typedef off_t wxFileOffset;
|
||
|
||
/**
|
||
Under Unix this macro changes the current process umask to the given value,
|
||
unless it is equal to -1 in which case nothing is done, and restores it to
|
||
the original value on scope exit. It works by declaring a variable which
|
||
sets umask to @a mask in its constructor and restores it in its destructor.
|
||
Under other platforms this macro expands to nothing.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
#define wxCHANGE_UMASK(mask)
|
||
|
||
/**
|
||
This function returns the total number of bytes and number of free bytes on
|
||
the disk containing the directory @a path (it should exist). Both @a total
|
||
and @a free parameters may be @NULL if the corresponding information is not
|
||
needed.
|
||
|
||
@since 2.3.2
|
||
|
||
@note The generic Unix implementation depends on the system having the
|
||
@c statfs() or @c statvfs() function.
|
||
|
||
@return @true on success, @false if an error occurred (for example, the
|
||
directory doesn’t exist).
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxGetDiskSpace(const wxString& path,
|
||
wxLongLong total = NULL,
|
||
wxLongLong free = NULL);
|
||
|
||
/**
|
||
Returns the Windows directory under Windows; other platforms return an
|
||
empty string.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxGetOSDirectory();
|
||
|
||
/**
|
||
Parses the @a wildCard, returning the number of filters. Returns 0 if none
|
||
or if there's a problem.
|
||
|
||
The arrays will contain an equal number of items found before the error. On
|
||
platforms where native dialogs handle only one filter per entry, entries in
|
||
arrays are automatically adjusted. @a wildCard is in the form:
|
||
|
||
@code
|
||
"All files (*)|*|Image Files (*.jpeg *.png)|*.jpg;*.png"
|
||
@endcode
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
int wxParseCommonDialogsFilter(const wxString& wildCard,
|
||
wxArrayString& descriptions,
|
||
wxArrayString& filters);
|
||
|
||
/**
|
||
Converts a DOS to a Unix filename by replacing backslashes with forward
|
||
slashes.
|
||
|
||
@deprecated
|
||
Construct a wxFileName with wxPATH_DOS and then use
|
||
wxFileName::GetFullPath(wxPATH_UNIX) instead.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
void wxDos2UnixFilename(wxChar* s);
|
||
|
||
/**
|
||
Converts a Unix to a DOS filename by replacing forward slashes with
|
||
backslashes.
|
||
|
||
@deprecated
|
||
Construct a wxFileName with wxPATH_UNIX and then use
|
||
wxFileName::GetFullPath(wxPATH_DOS) instead.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
void wxUnix2DosFilename(wxChar* s);
|
||
|
||
/**
|
||
Returns @true if @a dirname exists and is a directory.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxDirExists(const wxString& dirname);
|
||
|
||
/**
|
||
@deprecated
|
||
This function is obsolete, please use wxFileName::SplitPath() instead.
|
||
|
||
This function splits a full file name into components: the path (including
|
||
possible disk/drive specification under Windows), the base name, and the
|
||
extension. Any of the output parameters (@a path, @a name or @a ext) may be
|
||
@NULL if you are not interested in the value of a particular component.
|
||
|
||
wxSplitPath() will correctly handle filenames with both DOS and Unix path
|
||
separators under Windows, however it will not consider backslashes as path
|
||
separators under Unix (where backslash is a valid character in a filename).
|
||
|
||
On entry, @a fullname should be non-@NULL (it may be empty though).
|
||
|
||
On return, @a path contains the file path (without the trailing separator),
|
||
@a name contains the file name and @c ext contains the file extension
|
||
without leading dot. All three of them may be empty if the corresponding
|
||
component is. The old contents of the strings pointed to by these
|
||
parameters will be overwritten in any case (if the pointers are not @NULL).
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
void wxSplitPath(const wxString& fullname,
|
||
wxString* path,
|
||
wxString* name,
|
||
wxString* ext);
|
||
|
||
/**
|
||
Returns time of last modification of given file.
|
||
|
||
The function returns <tt>(time_t)-1</tt> if an error occurred (e.g. file
|
||
not found).
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
time_t wxFileModificationTime(const wxString& filename);
|
||
|
||
/**
|
||
Renames @a file1 to @e file2, returning @true if successful.
|
||
|
||
If @a file2 is a directory, @a file1 is moved into it (@a overwrite is
|
||
ignored in this case). Otherwise, if @a file2 is an existing file, it is
|
||
overwritten if @a overwrite is @true (default) and the function fails if @a
|
||
overwrite is @false.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxRenameFile(const wxString& file1,
|
||
const wxString& file2,
|
||
bool overwrite = true);
|
||
|
||
/**
|
||
Copies @a file1 to @e file2, returning @true if successful. If @a overwrite
|
||
parameter is @true (default), the destination file is overwritten if it
|
||
exists, but if @a overwrite is @false, the functions fails in this case.
|
||
|
||
This function supports resources forks under Mac OS.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxCopyFile(const wxString& file1,
|
||
const wxString& file2,
|
||
bool overwrite = true);
|
||
|
||
/**
|
||
Returns @true if the file exists and is a plain file.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxFileExists(const wxString& filename);
|
||
|
||
/**
|
||
Returns @true if the @a pattern matches the @e text; if @a dot_special is
|
||
@true, filenames beginning with a dot are not matched with wildcard
|
||
characters.
|
||
|
||
@see wxIsWild()
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxMatchWild(const wxString& pattern,
|
||
const wxString& text,
|
||
bool dot_special);
|
||
|
||
/**
|
||
@deprecated This function is deprecated, use wxGetCwd() instead.
|
||
|
||
Copies the current working directory into the buffer if supplied, or copies
|
||
the working directory into new storage (which you must delete yourself) if
|
||
the buffer is @NULL.
|
||
|
||
@a sz is the size of the buffer if supplied.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxGetWorkingDirectory(char* buf = NULL, int sz = 1000);
|
||
|
||
/**
|
||
Returns the directory part of the filename.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxPathOnly(const wxString& path);
|
||
|
||
/**
|
||
Returns @true if the pattern contains wildcards.
|
||
|
||
@see wxMatchWild()
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxIsWild(const wxString& pattern);
|
||
|
||
/**
|
||
Returns @true if the argument is an absolute filename, i.e. with a slash
|
||
or drive name at the beginning.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxIsAbsolutePath(const wxString& filename);
|
||
|
||
/**
|
||
Returns a string containing the current (or working) directory.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxGetCwd();
|
||
|
||
/**
|
||
Sets the current working directory, returning @true if the operation
|
||
succeeded. Under MS Windows, the current drive is also changed if @a dir
|
||
contains a drive specification.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxSetWorkingDirectory(const wxString& dir);
|
||
|
||
/**
|
||
Concatenates @a file1 and @a file2 to @e file3, returning @true if
|
||
successful.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxConcatFiles(const wxString& file1,
|
||
const wxString& file2,
|
||
const wxString& file3);
|
||
|
||
/**
|
||
Removes @e file, returning @true if successful.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxRemoveFile(const wxString& file);
|
||
|
||
/**
|
||
File permission bit names.
|
||
|
||
We define these constants in wxWidgets because S_IREAD &c are not standard.
|
||
However, we do assume that the values correspond to the Unix umask bits.
|
||
*/
|
||
enum wxPosixPermissions
|
||
{
|
||
/// Standard POSIX names for these permission flags with "wx" prefix.
|
||
//@{
|
||
wxS_IRUSR = 00400,
|
||
wxS_IWUSR = 00200,
|
||
wxS_IXUSR = 00100,
|
||
|
||
wxS_IRGRP = 00040,
|
||
wxS_IWGRP = 00020,
|
||
wxS_IXGRP = 00010,
|
||
|
||
wxS_IROTH = 00004,
|
||
wxS_IWOTH = 00002,
|
||
wxS_IXOTH = 00001,
|
||
//@}
|
||
|
||
/// Longer but more readable synonyms for the constants above.
|
||
//@{
|
||
wxPOSIX_USER_READ = wxS_IRUSR,
|
||
wxPOSIX_USER_WRITE = wxS_IWUSR,
|
||
wxPOSIX_USER_EXECUTE = wxS_IXUSR,
|
||
|
||
wxPOSIX_GROUP_READ = wxS_IRGRP,
|
||
wxPOSIX_GROUP_WRITE = wxS_IWGRP,
|
||
wxPOSIX_GROUP_EXECUTE = wxS_IXGRP,
|
||
|
||
wxPOSIX_OTHERS_READ = wxS_IROTH,
|
||
wxPOSIX_OTHERS_WRITE = wxS_IWOTH,
|
||
wxPOSIX_OTHERS_EXECUTE = wxS_IXOTH,
|
||
//@}
|
||
|
||
/// Default mode for the new files: allow reading/writing them to everybody but
|
||
/// the effective file mode will be set after ANDing this value with umask and
|
||
/// so won't include wxS_IW{GRP,OTH} for the default 022 umask value
|
||
wxS_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | \
|
||
wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | \
|
||
wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE),
|
||
|
||
/// Default mode for the new directories (see wxFileName::Mkdir): allow
|
||
/// reading/writing/executing them to everybody, but just like wxS_DEFAULT
|
||
/// the effective directory mode will be set after ANDing this value with umask
|
||
wxS_DIR_DEFAULT = (wxPOSIX_USER_READ | wxPOSIX_USER_WRITE | wxPOSIX_USER_EXECUTE | \
|
||
wxPOSIX_GROUP_READ | wxPOSIX_GROUP_WRITE | wxPOSIX_GROUP_EXECUTE | \
|
||
wxPOSIX_OTHERS_READ | wxPOSIX_OTHERS_WRITE | wxPOSIX_OTHERS_EXECUTE)
|
||
};
|
||
|
||
/**
|
||
Makes the directory @a dir, returning @true if successful.
|
||
|
||
@a perm is the access mask for the directory for the systems on which it is
|
||
supported (Unix) and doesn't have any effect on the other ones.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxMkdir(const wxString& dir, int perm = wxS_DIR_DEFAULT);
|
||
|
||
/**
|
||
Removes the directory @a dir, returning @true if successful. Does not work
|
||
under VMS.
|
||
|
||
The @a flags parameter is reserved for future use.
|
||
|
||
@note There is also a wxRmDir() function which simply wraps the standard
|
||
POSIX @c rmdir() function and so return an integer error code instead
|
||
of a boolean value (but otherwise is currently identical to
|
||
wxRmdir()), don't confuse these two functions.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
bool wxRmdir(const wxString& dir, int flags = 0);
|
||
|
||
/**
|
||
Returns the next file that matches the path passed to wxFindFirstFile().
|
||
|
||
See wxFindFirstFile() for an example.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxFindNextFile();
|
||
|
||
/**
|
||
This function does directory searching; returns the first file that matches
|
||
the path @a spec, or the empty string. Use wxFindNextFile() to get the next
|
||
matching file. Neither will report the current directory "." or the parent
|
||
directory "..".
|
||
|
||
@warning As of 2.5.2, these functions are not thread-safe! (they use static
|
||
variables). You probably want to use wxDir::GetFirst() or
|
||
wxDirTraverser instead.
|
||
|
||
@a spec may contain wildcards.
|
||
|
||
@a flags may be wxDIR for restricting the query to directories, wxFILE for
|
||
files or zero for either.
|
||
|
||
For example:
|
||
|
||
@code
|
||
wxString f = wxFindFirstFile("/home/project/*.*");
|
||
while ( !f.empty() )
|
||
{
|
||
...
|
||
f = wxFindNextFile();
|
||
}
|
||
@endcode
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxFindFirstFile(const wxString& spec, int flags = 0);
|
||
|
||
/**
|
||
Parameter indicating how file offset should be interpreted.
|
||
|
||
This is used by wxFFile::Seek() and wxFile::Seek().
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
enum wxSeekMode
|
||
{
|
||
wxFromStart, ///< Seek from the file beginning.
|
||
wxFromCurrent, ///< Seek from the current position.
|
||
wxFromEnd ///< Seek from end of the file.
|
||
};
|
||
|
||
/**
|
||
File kind enumerations returned from wxGetFileKind().
|
||
|
||
Also used by wxFFile::GetKind() and wxFile::GetKind().
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
enum wxFileKind
|
||
{
|
||
wxFILE_KIND_UNKNOWN, ///< Unknown file kind, or unable to determine
|
||
wxFILE_KIND_DISK, ///< A file supporting seeking to arbitrary offsets
|
||
wxFILE_KIND_TERMINAL, ///< A tty
|
||
wxFILE_KIND_PIPE ///< A pipe
|
||
};
|
||
|
||
//@}
|
||
|
||
/** @addtogroup group_funcmacro_file */
|
||
//@{
|
||
/**
|
||
Returns the type of an open file. Possible return values are enumerations
|
||
of ::wxFileKind.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxFileKind wxGetFileKind(int fd);
|
||
wxFileKind wxGetFileKind(FILE* fp);
|
||
//@}
|
||
|
||
/** @addtogroup group_funcmacro_file */
|
||
//@{
|
||
/**
|
||
@deprecated
|
||
This function is obsolete, please use wxFileName::SplitPath() instead.
|
||
|
||
Returns the filename for a full path. The second form returns a pointer to
|
||
temporary storage that should not be deallocated.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
wxString wxFileNameFromPath(const wxString& path);
|
||
char* wxFileNameFromPath(char* path);
|
||
//@}
|
||
|
||
/** @addtogroup group_funcmacro_file */
|
||
//@{
|
||
/**
|
||
@deprecated
|
||
This function is obsolete, please use wxFileName::CreateTempFileName() instead.
|
||
|
||
@header{wx/filefn.h}
|
||
*/
|
||
char* wxGetTempFileName(const wxString& prefix, char* buf = NULL);
|
||
bool wxGetTempFileName(const wxString& prefix, wxString& buf);
|
||
//@}
|
||
|