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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 1.5 $ -->
<!-- Purpose: basic.text -->
<!-- Membership: pecl, external -->
<book xml:id="book.xdiff" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<title>xdiff</title>
<!-- {{{ preface -->
<preface xml:id="intro.xdiff">
&reftitle.intro;
<para>
xdiff extension enables you to create and apply patch files containing
differences between different revisions of files.
</para>
<para>
This extension supports two modes of operation - on strings and on files, as well
as two different patch formats - unified and binary. Unified patches are excellent
for text files as they are human-readable and easy to review. For binary files like
archives or images, binary patches will be adequate choice as they are binary safe and
handle non-printable characters well.
</para>
<para>
Starting from version 1.5.0 there are two different sets of functions for generating
binary patches. New functions - <function>xdiff_string_rabdiff</function> and
<function>xdiff_file_rabdiff</function> generate output compatible with older functions
but are typically faster and generate smaller results. For more details about methods of
generating binary patches and differences between them, please check
<link xlink:href="&url.xdiff;">libxdiff</link> website.
</para>
<para>
This extension uses libxdiff to implement these functions. Please see
<link xlink:href="&url.xdiff;">&url.xdiff;</link> for more informations.
</para>
</preface>
<!-- }}} -->
&reference.xdiff.setup;
&reference.xdiff.constants;
&reference.xdiff.reference;
</book>
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sgml-parent-document:nil
sgml-default-dtd-file:"../../../manual.ced"
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-->
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