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.\" ========================================================================
.\"
.IX Title "native::Delta 3"
.TH native::Delta 3 "2005-10-24" "perl v5.10.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
SVN::Delta \- Subversion delta functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 3
\&    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",
\&                                          \*(Aq/\*(Aq, \*(Aqroot\*(Aq, \*(AqFOO\*(Aq, \e&committed));
\&
\&    my $rootbaton = $editor\->open_root(0);
\&
\&    my $fbaton = $editor\->add_file (\*(Aqfilea\*(Aq, $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, $path,
\&                          SVN::Delta::Editor\->new(_debug=>1),
\&                          1, 1, 0, 1
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
SVN::Delta wraps delta related function in subversion. The most
important one is SVN::Delta::Editor, the interface for describing tree
deltas. by default SVN::Delta::Editor relays method calls to its
internal member \f(CW\*(C`_editor\*(C'\fR, which could either be an editor in C (such
as the one you get from get_commit_editor), or another
SVN::Delta::Editor object.
.SH "SVN::Delta::Editor"
.IX Header "SVN::Delta::Editor"
.SS "Driving Editors"
.IX Subsection "Driving Editors"
If you want to drive a native editor (such as commit_editor obtained
by SVN::Repos::get_commit_editor), create a SVN::Delta::Editor object
with the native editor/baton pair. The object will then be ready to
use and its method calls will be relayed to the native editor.
.SS "Implementing Editors"
.IX Subsection "Implementing Editors"
If you want to implement an editor, subclass SVN::Delta::Editor and
implement the editors callbacks. see the \s-1METHODS\s0 section below.
.SS "\s-1CONSTRUCTOR\s0 \- new (...)"
.IX Subsection "CONSTRUCTOR - new (...)"
.ie n .IP "new ($editor, $editor_baton)" 4
.el .IP "new ($editor, \f(CW$editor_baton\fR)" 4
.IX Item "new ($editor, $editor_baton)"
Link to the native editor
.PP
You can also pass a hash array to new:
.IP "_debug" 4
.IX Item "_debug"
Turn on debug.
.IP "_editor" 4
.IX Item "_editor"
An arrayref of the editor/baton pair or another SVN::Delta::Editor
object to link with.
.SS "\s-1METHODS\s0"
.IX Subsection "METHODS"
Please consult the svn_delta.h section in the Subversion \s-1API\s0. 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.
.PP
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.
.SH "BUGS"
.IX Header "BUGS"
Functions returning editor/baton pair should really be typemapped to a
SVN::Delta::Editor object.
.SH "AUTHORS"
.IX Header "AUTHORS"
Chia-liang Kao <clkao@clkao.org>
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright (c) 2003 CollabNet.  All rights reserved.
.PP
This software is licensed as described in the file \s-1COPYING\s0, which you
should have received as part of this distribution.  The terms are also
available at http://subversion.tigris.org/license\-1.html.  If newer
versions of this license are posted there, you may use a newer version
instead, at your option.
.PP
This software consists of voluntary contributions made by many
individuals.  For exact contribution history, see the revision history
and logs, available at http://subversion.tigris.org/.