phpman > perldoc > File::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.