xdiff-string-rabdiff.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.xdiff-string-rabdiff" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
 <refnamediv>
  <refname>xdiff_string_rabdiff</refname>
  <refpurpose>Make binary diff of two strings using the Rabin's polynomial fingerprinting algorithm</refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>xdiff_string_bdiff</methodname>
   <methodparam><type>string</type><parameter>old_data</parameter></methodparam>
   <methodparam><type>string</type><parameter>new_data</parameter></methodparam>
  </methodsynopsis>
  <para>
   Makes a binary diff of two strings and returns the result.
   The difference between this function and <function>xdiff_string_bdiff</function> is different
   algorithm used which should result in faster execution and smaller diff produced.
   This function works with both text and binary data. Resulting patch
   can be later applied using <function>xdiff_string_bpatch</function>/<function>xdiff_file_bpatch</function>.
  </para>
  <para>
   For more details about differences between algorithm used please check <link xlink:href="&url.xdiff;">libxdiff</link> 
   website.
  </para>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>old_data</parameter></term>
     <listitem>
      <para>
       First string with binary data. It acts as "old" data.
      </para>
     </listitem>
    </varlistentry>
    <varlistentry>
     <term><parameter>new_data</parameter></term>
     <listitem>
      <para>
       Second string with binary data. It acts as "new" data.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns string with binary diff containing differences between "old" and "new"
   data or &false; if an internal error occurred.
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>xdiff_string_bpatch</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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