NAME
    File::Copy::Undoable - Copy file/directory using rsync, with undo
    support

VERSION
    This document describes version 0.12 of File::Copy::Undoable (from Perl
    distribution File-Copy-Undoable), released on 2017-07-10.

FUNCTIONS
  cp
    Usage:

     cp(%args) -> [status, msg, result, meta]

    Copy file/directory using rsync, with undo support.

    On do, will copy "source" to "target" (which must not exist beforehand).
    On undo, will trash "target".

    Fixed state: "source" exists and "target" exists. Content or sizes are
    not checked; only existence.

    Fixable state: "source" exists and "target" doesn't exist.

    Unfixable state: "source" does not exist.

    This function is not exported.

    This function is idempotent (repeated invocations with same arguments
    has the same effect as single invocation). This function supports
    transactions.

    Arguments ('*' denotes required arguments):

    *   rsync_opts => *array[str]* (default: ["-a"])

        Rsync options.

        By default, "-a" is used. You can add, for example, "--delete" or
        other rsync options.

    *   source* => *str*

    *   target* => *str*

        Target location.

        Note that to avoid ambiguity, you must specify full location instead
        of just directory name. For example: cp(source=>'/dir',
        target=>'/a') will copy /dir to /a and cp(source=>'/dir',
        target=>'/a/dir') will copy /dir to /a/dir.

    *   target_group => *str*

        Set group of target.

        See "target_owner".

    *   target_owner => *str*

        Set ownership of target.

        If set, will do a "chmod -Rh" on the target after rsync to set
        ownership. This usually requires super-user privileges. An example
        of this is copying files on behalf of user from a source that is
        inaccessible by the user (e.g. a system backup location). Or,
        setting up user's home directory when creating a user.

        Will do nothing if not running as super-user.

    Special arguments:

    *   -tx_action => *str*

        For more information on transaction, see Rinci::Transaction.

    *   -tx_action_id => *str*

        For more information on transaction, see Rinci::Transaction.

    *   -tx_recovery => *str*

        For more information on transaction, see Rinci::Transaction.

    *   -tx_rollback => *str*

        For more information on transaction, see Rinci::Transaction.

    *   -tx_v => *str*

        For more information on transaction, see Rinci::Transaction.

    Returns an enveloped result (an array).

    First element (status) is an integer containing HTTP status code (200
    means OK, 4xx caller error, 5xx function error). Second element (msg) is
    a string containing error message, or 'OK' if status is 200. Third
    element (result) is optional, the actual result. Fourth element (meta)
    is called result metadata and is optional, a hash that contains extra
    information.

    Return value: (any)

FAQ
  Why do you use rsync? Why not, say, File::Copy::Recursive?
    With "rsync", we can continue interrupted transfer. We need this ability
    for recovery. Also, "rsync" can handle hardlinks and preservation of
    ownership, something which File::Copy::Recursive currently does not do.
    And, being implemented in C, it might be faster when processing large
    files/trees.

HOMEPAGE
    Please visit the project's homepage at
    <https://metacpan.org/release/File-Copy-Undoable>.

SOURCE
    Source repository is at
    <https://github.com/perlancar/perl-File-Copy-Undoable>.

BUGS
    Please report any bugs or feature requests on the bugtracker website
    <https://rt.cpan.org/Public/Dist/Display.html?Name=File-Copy-Undoable>

    When submitting a bug or request, please include a test-file or a patch
    to an existing test-file that illustrates the bug or desired feature.

SEE ALSO
    Setup

    Rinci::Transaction

AUTHOR
    perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE
    This software is copyright (c) 2017, 2016, 2015, 2014, 2013, 2012 by
    perlancar@cpan.org.

    This is free software; you can redistribute it and/or modify it under
    the same terms as the Perl 5 programming language system itself.