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.\"
.IX Title "Patch 3"
.TH Patch 3 2023-07-25 "perl v5.38.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
Text::Patch \- Patches text with given patch
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\&    use Text::Patch;
\&
\&    $output = patch( $source, $diff, STYLE => "Unified" );
\&
\&    use Text::Diff;
\&
\&    $src  = ...
\&    $dst  = ...
\&
\&    $diff = diff( \e$src, \e$dst, { STYLE => \*(AqUnified\*(Aq } );
\&
\&    $out  = patch( $src, $diff, { STYLE => \*(AqUnified\*(Aq } );
\&
\&    print "Patch successful" if $out eq $dst;
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Text::Patch combines source text with given diff (difference) data.
Diff data is produced by Text::Diff module or by the standard diff
utility (man diff, see \-u option).
.ie n .IP "patch( $source, $diff, options... )" 4
.el .IP "patch( \f(CW$source\fR, \f(CW$diff\fR, options... )" 4
.IX Item "patch( $source, $diff, options... )"
First argument is source (original) text. Second is the diff data.
Third argument can be either hash reference with options or all the
rest arguments will be considered patch options:
.Sp
.Vb 1
\&    $output = patch( $source, $diff, STYLE => "Unified", ... );
\&
\&    $output = patch( $source, $diff, { STYLE => "Unified", ... } );
.Ve
.Sp
Options are:
.Sp
.Vb 1
\&  STYLE => \*(AqUnified\*(Aq
.Ve
.Sp
STYLE can be "Unified", "Context" or "OldStyle".
.Sp
The 'Unified' diff format looks like this:
.Sp
.Vb 10
\&  @@ \-1,7 +1,6 @@
\&  \-The Way that can be told of is not the eternal Way;
\&  \-The name that can be named is not the eternal name.
\&   The Nameless is the origin of Heaven and Earth;
\&  \-The Named is the mother of all things.
\&  +The named is the mother of all things.
\&  +
\&   Therefore let there always be non\-being,
\&     so we may see their subtlety,
\&   And let there always be being,
\&  @@ \-9,3 +8,6 @@
\&   The two are the same,
\&   But after they are produced,
\&     they have different names.
\&  +They both may be called deep and profound.
\&  +Deeper and more profound,
\&  +The door of all subtleties!
.Ve
.SH TODO
.IX Header "TODO"
.Vb 1
\&  Interfaces with files, arrays, etc.
.Ve
.SH AUTHOR
.IX Header "AUTHOR"
.Vb 1
\&  Vladi Belperchinov\-Shabanski "Cade"
\&
\&  <cade@biscom.net> <cade@datamax.bg> <cade@cpan.org>
\&
\&  http://cade.datamax.bg
.Ve
.SH VERSION
.IX Header "VERSION"
.Vb 1
\&  $Id: Patch.pm,v 1.6 2007/04/07 19:57:41 cade Exp $
.Ve