native::Delta(3) User Contributed Perl Documentation native::Delta(3)

SVN::Delta - Subversion delta functions

require SVN::Core;
require SVN::Repos;
require SVN::Delta;
# driving an editor
my $editor = SVN::Delta::Editor->
    new(SVN::Repos::get_commit_editor($repos, "file://$repospath",
                                      '/', 'root', 'FOO', \&committed));
my $rootbaton = $editor->open_root(0);
my $fbaton = $editor->add_file('filea', $rootbaton,
                               undef, -1);
my $ret = $editor->apply_textdelta($fbaton, undef);
SVN::TxDelta::send_string("FILEA CONTENT", @$ret);
# implement an editor in perl
SVN::Repos::dir_delta($root1, $path, undef,
                      $root2, $path,
                      SVN::Delta::Editor->new(_debug=>1),
                      1, 1, 0, 1

SVN::Delta wraps delta related function in subversion. The most important one is SVN::Delta::Editor, the interface for describing tree deltas. by default SVN::Delta::Editor relays method calls to its internal member "_editor", which could either be an editor in C (such as the one you get from get_commit_editor), or another SVN::Delta::Editor object.

If you want to drive a native editor (such as commit_editor obtained by SVN::Repos::get_commit_editor), create a SVN::Delta::Editor object with the native editor/baton pair. The object will then be ready to use and its method calls will be relayed to the native editor.

If you want to implement an editor, subclass SVN::Delta::Editor and implement the editors callbacks. see the METHODS section below.

Link to the native editor

You can also pass a hash array to new:

_debug
Turn on debug.
_editor
An arrayref of the editor/baton pair or another SVN::Delta::Editor object to link with.

Please consult the svn_delta.h section in the Subversion API. Member functions of svn_delta_editor_t could be called as methods of SVN::Delta::Editor objects, with the edit_baton omitted. The pool is also optional.

If you are subclassing, the methods take exactly the same arguments as the member functions (note that void ** are returned data though as throughout the perl bindings), with the edit_baton omitted.

Functions returning editor/baton pair should really be typemapped to a SVN::Delta::Editor object.

Chia-liang Kao <clkao@clkao.org>

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2024-10-03 perl v5.40.0