File::Copy::Recursive(User Contributed Perl DocumentFile::Copy::Recursive(3pm)
NAME
File::Copy::Recursive - Perl extension for recursively copying files
and directories
SYNOPSIS
use File::Copy::Recursive qw(fcopy rcopy dircopy fmove rmove dirmove);
fcopy($orig,$new[,$buf]) or die $!;
rcopy($orig,$new[,$buf]) or die $!;
dircopy($orig,$new[,$buf]) or die $!;
fmove($orig,$new[,$buf]) or die $!;
rmove($orig,$new[,$buf]) or die $!;
dirmove($orig,$new[,$buf]) or die $!;
rcopy_glob("orig/stuff-*", $trg [, $buf]) or die $!;
rmove_glob("orig/stuff-*", $trg [,$buf]) or die $!;
DESCRIPTION
This module copies and moves directories recursively (or single files,
well... singley) to an optional depth and attempts to preserve each
file or directory's mode.
EXPORT
None by default. But you can export all the functions as in the example
above and the path* functions if you wish.
fcopy()
This function uses File::Copy's copy() function to copy a file but not
a directory. Any directories are recursively created if need be. One
difference to File::Copy::copy() is that fcopy attempts to preserve the
mode (see Preserving Mode below) The optional $buf in the synopsis is
the same as File::Copy::copy()'s 3rd argument. This function returns
the same as File::Copy::copy() in scalar context and 1,0,0 in list
context to accomodate rcopy()'s list context on regular files. (See
below for more info)
dircopy()
This function recursively traverses the $orig directory's structure and
recursively copies it to the $new directory. $new is created if
necessary (multiple non existent directories is ok (i.e. foo/bar/baz).
The script logically and portably creates all of them if necessary).
It attempts to preserve the mode (see Preserving Mode below) and by
default it copies all the way down into the directory (see Managing
Depth, below). If a directory is not specified it croaks just like
fcopy croaks if its not a file that is specified.
This function returns true or false: for true in scalar context it
returns the number of files and directories copied, whereas in list
context it returns the number of files and directories, number of
directories only, depth level traversed.
my $num_of_files_and_dirs = dircopy($orig,$new);
my($num_of_files_and_dirs,$num_of_dirs,$depth_traversed) = dircopy($orig,$new);
Normally it stops and returns if a copy fails. To continue on
regardless, set $File::Copy::Recursive::SkipFlop to true.
local $File::Copy::Recursive::SkipFlop = 1;
That way it will copy everythging it can in a directory and won't stop
because of permissions, etc...
rcopy()
This function will allow you to specify a file *or* a directory. It
calls fcopy() if you passed file and dircopy() if you passed a
directory. If you call rcopy() (or fcopy() for that matter) on a file
in list context, the values will be 1,0,0 since no directories and no
depth are used. This is important because if it's a directory in list
context and there is only the initial directory the return value is
1,1,1.
rcopy_glob()
This function lets you specify a pattern suitable for perl's
File::Glob::bsd_glob() as the first argument. Subsequently each path
returned by perl's File::Glob::bsd_glob() gets rcopy()ied.
It returns and array whose items are array refs that contain the return
value of each rcopy() call.
It forces behavior as if $File::Copy::Recursive::CPRFComp is true.
fmove()
Copies the file then removes the original. You can manage the path the
original file is in according to $RemvBase.
dirmove()
Uses dircopy() to copy the directory then removes the original. You can
manage the path the original directory is in according to $RemvBase.
rmove()
Like rcopy() but calls fmove() or dirmove() instead.
rmove_glob()
Like rcopy_glob() but calls rmove() instead of rcopy()
$RemvBase
Default is false. When set to true the *move() functions will not only
attempt to remove the original file or directory but will remove the
given path it is in.
So if you:
rmove('foo/bar/baz', '/etc/');
# "baz" is removed from foo/bar after it is successfully copied to /etc/
local $File::Copy::Recursive::Remvbase = 1;
rmove('foo/bar/baz','/etc/');
# if baz is successfully copied to /etc/ :
# first "baz" is removed from foo/bar
# then "foo/bar is removed via pathrm()
$ForcePth
Default is false. When set to true it calls pathempty() before any
directories are removed to empty the directory so it can be rmdir()'ed
when $RemvBase is in effect.
Creating and Removing Paths
$NoFtlPth
Default is false. If set to true rmdir(), mkdir(), and pathempty()
calls in pathrm() and pathmk() do not return() on failure.
If its set to true they just silently go about their business
regardless. This isn't a good idea but it's there if you want it.
$DirPerms
Mode to pass to any mkdir() calls. Defaults to 0777 as per umask()'s
POD. Explicitly having this allows older perls to be able to use FCR
and might add a bit of flexibility for you.
Any value you set it to should be suitable for oct().
Path functions
These functions exist solely because they were necessary for the move
and copy functions to have the features they do and not because they
are of themselves the purpose of this module. That being said, here is
how they work so you can understand how the copy and move functions
work and use them by themselves if you wish.
pathrm()
Removes a given path recursively. It removes the *entire* path so be
careful!!!
Returns 2 if the given path is not a directory.
File::Copy::Recursive::pathrm('foo/bar/baz') or die $!;
# foo no longer exists
Same as:
rmdir 'foo/bar/baz' or die $!;
rmdir 'foo/bar' or die $!;
rmdir 'foo' or die $!;
An optional second argument makes it call pathempty() before any
rmdir()'s when set to true.
File::Copy::Recursive::pathrm('foo/bar/baz', 1) or die $!;
# foo no longer exists
Same as:PFSCheck
File::Copy::Recursive::pathempty('foo/bar/baz') or die $!;
rmdir 'foo/bar/baz' or die $!;
File::Copy::Recursive::pathempty('foo/bar/') or die $!;
rmdir 'foo/bar' or die $!;
File::Copy::Recursive::pathempty('foo/') or die $!;
rmdir 'foo' or die $!;
An optional third argument acts like $File::Copy::Recursive::NoFtlPth,
again probably not a good idea.
pathempty()
Recursively removes the given directory's contents so it is empty.
Returns 2 if the given argument is not a directory, 1 on successfully
emptying the directory.
File::Copy::Recursive::pathempty($pth) or die $!;
# $pth is now an empty directory
pathmk()
Creates a given path recursively. Creates foo/bar/baz even if foo does
not exist.
File::Copy::Recursive::pathmk('foo/bar/baz') or die $!;
An optional second argument if true acts just like
$File::Copy::Recursive::NoFtlPth, which means you'd never get your
die() if something went wrong. Again, probably a *bad* idea.
pathrmdir()
Same as rmdir() but it calls pathempty() first to recursively empty it
first since rmdir can not remove a directory with contents. Just
removes the top directory the path given instead of the entire path
like pathrm(). Returns 2 if the given argument does not exist (i.e.
it's already gone). Returns false if it exists but is not a directory.
Preserving Mode
By default a quiet attempt is made to change the new file or directory
to the mode of the old one. To turn this behavior off set
$File::Copy::Recursive::KeepMode to false;
Managing Depth
You can set the maximum depth a directory structure is recursed by
setting:
$File::Copy::Recursive::MaxDepth to a whole number greater than 0.
SymLinks
If your system supports symlinks then symlinks will be copied as
symlinks instead of as the target file. Perl's symlink() is used
instead of File::Copy's copy(). You can customize this behavior by
setting $File::Copy::Recursive::CopyLink to a true or false value. It
is already set to true or false depending on your system's support of
symlinks so you can check it with an if statement to see how it will
behave:
if($File::Copy::Recursive::CopyLink) {
print "Symlinks will be preserved\n";
} else {
print "Symlinks will not be preserved because your system does not support it\n";
}
If symlinks are being copied you can set
$File::Copy::Recursive::BdTrgWrn to true to make it carp when it copies
a link whose target does not exist. It's false by default.
local $File::Copy::Recursive::BdTrgWrn = 1;
Removing existing target file or directory before copying.
This can be done by setting $File::Copy::Recursive::RMTrgFil or
$File::Copy::Recursive::RMTrgDir for file or directory behavior
respectively.
0 = off (This is the default)
1 = carp() $! if removal fails
2 = return if removal fails
local $File::Copy::Recursive::RMTrgFil = 1;
fcopy($orig, $target) or die $!;
# if it fails it does warn() and keeps going
local $File::Copy::Recursive::RMTrgDir = 2;
dircopy($orig, $target) or die $!;
# if it fails it does your "or die"
This should be unnecessary most of the time but it's there if you need
it :)
Turning off stat() check
By default the files or directories are checked to see if they are the
same (i.e. linked, or two paths (absolute/relative or different
relative paths) to the same file) by comparing the file's stat() info.
It's a very efficient check that croaks if they are and shouldn't be
turned off but if you must for some weird reason just set
$File::Copy::Recursive::PFSCheck to a false value. ("PFS" stands for
"Physical File System")
Emulating cp -rf dir1/ dir2/
By default dircopy($dir1,$dir2) will put $dir1's contents right into
$dir2 whether $dir2 exists or not.
You can make dircopy() emulate cp -rf by setting
$File::Copy::Recursive::CPRFComp to true.
NOTE: This only emulates -f in the sense that it does not prompt. It
does not remove the target file or directory if it exists. If you need
to do that then use the variables $RMTrgFil and $RMTrgDir described in
"Removing existing target file or directory before copying" above.
That means that if $dir2 exists it puts the contents into $dir2/$dir1
instead of $dir2 just like cp -rf. If $dir2 does not exist then the
contents go into $dir2 like normal (also like cp -rf).
So assuming 'foo/file':
dircopy('foo', 'bar') or die $!;
# if bar does not exist the result is bar/file
# if bar does exist the result is bar/file
$File::Copy::Recursive::CPRFComp = 1;
dircopy('foo', 'bar') or die $!;
# if bar does not exist the result is bar/file
# if bar does exist the result is bar/foo/file
You can also specify a star for cp -rf glob type behavior:
dircopy('foo/*', 'bar') or die $!;
# if bar does not exist the result is bar/file
# if bar does exist the result is bar/file
$File::Copy::Recursive::CPRFComp = 1;
dircopy('foo/*', 'bar') or die $!;
# if bar does not exist the result is bar/file
# if bar does exist the result is bar/file
NOTE: The '*' is only like cp -rf foo/* and *DOES NOT EXPAND PARTIAL
DIRECTORY NAMES LIKE YOUR SHELL DOES* (i.e. not like cp -rf fo* to copy
foo/*).
Allowing Copy Loops
If you want to allow:
cp -rf . foo/
type behavior set $File::Copy::Recursive::CopyLoop to true.
This is false by default so that a check is done to see if the source
directory will contain the target directory and croaks to avoid this
problem.
If you ever find a situation where $CopyLoop = 1 is desirable let me
know. (i.e. it's a bad bad idea but is there if you want it)
(Note: On Windows this was necessary since it uses stat() to determine
sameness and stat() is essentially useless for this on Windows. The
test is now simply skipped on Windows but I'd rather have an actual
reliable check if anyone in Microsoft land would care to share)
SEE ALSO
File::Copy File::Spec
TO DO
I am currently working on and reviewing some other modules to use in
the new interface so we can lose the horrid globals as well as some
other undesirable traits and also more easily make available some long
standing requests.
Tests will be easier to do with the new interface and hence the testing
focus will shift to the new interface and aim to be comprehensive.
The old interface will work, it just won't be brought in until it is
used, so it will add no overhead for users of the new interface.
I'll add this after the latest version has been out for a while with no
new features or issues found :)
AUTHOR
Daniel Muey, <http://drmuey.com/cpan_contact.pl>
COPYRIGHT AND LICENSE
Copyright 2004 by Daniel Muey
This library is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.36.0 2022-11-27 File::Copy::Recursive(3pm)
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