|
|
<?php // $Id: lib.diff.php,v 1.12 2005/11/18 20:25:11 zefredz Exp $
|
|
|
|
|
|
// vim: expandtab sw=4 ts=4 sts=4:
|
|
|
|
|
|
/**
|
|
|
* CLAROLINE
|
|
|
*
|
|
|
* @version 1.7 $Revision: 1.12 $
|
|
|
*
|
|
|
* @copyright 2001-2005 Universite catholique de Louvain (UCL)
|
|
|
*
|
|
|
* @license http://www.gnu.org/copyleft/gpl.html (GPL) GENERAL PUBLIC LICENSE
|
|
|
* This program is under the terms of the GENERAL PUBLIC LICENSE (GPL)
|
|
|
* as published by the FREE SOFTWARE FOUNDATION. The GPL is available
|
|
|
* through the world-wide-web at http://www.gnu.org/copyleft/gpl.html
|
|
|
*
|
|
|
* @author Frederic Minne <zefredz@gmail.com>
|
|
|
*
|
|
|
* @package Wiki
|
|
|
*/
|
|
|
|
|
|
define( "DIFF_EQUAL", "=" );
|
|
|
define( "DIFF_ADDED", "+" );
|
|
|
define( "DIFF_DELETED", "-" );
|
|
|
define( "DIFF_MOVED", "M" );
|
|
|
|
|
|
/**
|
|
|
* Get difference between two strings
|
|
|
* @param string old first string
|
|
|
* @param string new second string
|
|
|
* @param boolean show_equals set to true to see line that are equal between
|
|
|
* the two strings (default true)
|
|
|
* @param string format_line_function callback function to format line
|
|
|
* (default 'format_line')
|
|
|
* @return string formated diff output
|
|
|
*/
|
|
|
function diff( $old, $new, $show_equals = false, $format_line_function = 'format_line' )
|
|
|
{
|
|
|
$oldArr = str_split_on_new_line( $old );
|
|
|
$newArr = str_split_on_new_line( $new );
|
|
|
|
|
|
$oldCount = count ( $oldArr );
|
|
|
$newCount = count ( $newArr );
|
|
|
|
|
|
$max = max( $oldCount, $newCount );
|
|
|
|
|
|
//get added and deleted lines
|
|
|
|
|
|
$deleted = array_diff_assoc( $oldArr, $newArr );
|
|
|
$added = array_diff_assoc( $newArr, $oldArr );
|
|
|
|
|
|
$moved = array();
|
|
|
|
|
|
foreach ( $added as $key => $candidate )
|
|
|
{
|
|
|
foreach ( $deleted as $index => $content )
|
|
|
{
|
|
|
if ( $candidate == $content )
|
|
|
{
|
|
|
$moved[$key] = $candidate;
|
|
|
unset( $added[$key] );
|
|
|
unset( $deleted[$index] );
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
$output = '';
|
|
|
|
|
|
for ( $i = 0; $i < $max; $i++ )
|
|
|
{
|
|
|
// line changed
|
|
|
if ( isset ( $deleted[$i] ) && isset( $added[$i] ) )
|
|
|
{
|
|
|
$output .= $format_line_function( $i, DIFF_DELETED, $deleted[$i] );
|
|
|
$output .= $format_line_function( $i, DIFF_ADDED, $added[$i] );
|
|
|
|
|
|
}
|
|
|
// line deleted
|
|
|
elseif ( isset ( $deleted[$i] ) && ! isset ( $added[$i] ) )
|
|
|
{
|
|
|
$output .= $format_line_function( $i, DIFF_DELETED, $deleted[$i] );
|
|
|
|
|
|
}
|
|
|
// line added
|
|
|
elseif ( isset ( $added[$i] ) && ! isset ( $deleted[$i] ) )
|
|
|
{
|
|
|
$output .= $format_line_function( $i, DIFF_ADDED, $added[$i] );
|
|
|
|
|
|
}
|
|
|
// line moved
|
|
|
elseif ( isset ( $moved[$i] ) )
|
|
|
{
|
|
|
$output .= $format_line_function( $i, DIFF_MOVED, $newArr[$i] );
|
|
|
|
|
|
}
|
|
|
// line unchanged
|
|
|
elseif ( $show_equals == true )
|
|
|
{
|
|
|
$output .= $format_line_function( $i, DIFF_EQUAL, $newArr[$i] );
|
|
|
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
// skip
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return $output;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Split strings on new line
|
|
|
*/
|
|
|
function str_split_on_new_line( $str )
|
|
|
{
|
|
|
$content = array();
|
|
|
|
|
|
if ( api_strpos( $str, "\r\n" ) !== false )
|
|
|
{
|
|
|
$content = explode("\r\n", $str );
|
|
|
}
|
|
|
elseif ( api_strpos( $str, "\n" ) !== false )
|
|
|
{
|
|
|
$content = explode( "\n", $str );
|
|
|
}
|
|
|
elseif ( api_strpos( $str, "\r" ) !== false )
|
|
|
{
|
|
|
$content = explode( "\r", $str );
|
|
|
}
|
|
|
else
|
|
|
{
|
|
|
$content[] = $str;
|
|
|
}
|
|
|
|
|
|
return $content;
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Default and prototype format line function
|
|
|
* @param int line line number
|
|
|
* @param mixed type line type, must be one of the following :
|
|
|
* DIFF_EQUAL, DIFF_MOVED, DIFF_ADDED, DIFF_DELETED
|
|
|
* @param string value line content
|
|
|
* @param boolean skip_empty skip empty lines (default false)
|
|
|
* @return string formated diff line
|
|
|
*/
|
|
|
function format_line( $line, $type, $value, $skip_empty = false )
|
|
|
{
|
|
|
if ( trim( $value ) == "" && $skip_empty )
|
|
|
{
|
|
|
return "";
|
|
|
}
|
|
|
elseif ( trim( $value ) == "" )
|
|
|
{
|
|
|
$value = ' ';
|
|
|
}
|
|
|
|
|
|
switch ( $type )
|
|
|
{
|
|
|
case DIFF_EQUAL:
|
|
|
{
|
|
|
// return $line. ' : ' . ' = <span class="diffEqual" >' . $value . '</span><br />' . "\n" ;
|
|
|
return '<span class="diffEqual" >' . $value . '</span><br />' . "\n" ; //juan carlos muestra solo color
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_MOVED:
|
|
|
{
|
|
|
//return $line. ' : ' . ' M <span class="diffMoved" >' . $value . '</span><br />' . "\n" ; //juan carlos ra<EFBFBD>a la sustitye la inverior
|
|
|
return '<span class="diffMoved" >' . $value . '</span><br />' . "\n" ; //juan carlos muestra solo color
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_ADDED:
|
|
|
{
|
|
|
//return $line . ' : ' . ' + <span class="diffAdded" >' . $value . '</span><br />' . "\n" ;
|
|
|
return '<span class="diffAdded" >' . $value . '</span><br />' . "\n" ; //juan carlos muestra solo color
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_DELETED:
|
|
|
{
|
|
|
//return $line . ' : ' . ' - <span class="diffDeleted" >' . $value . '</span><br />' . "\n" ; //juan carlos ra<EFBFBD>a la sustitye la inverior
|
|
|
return '<span class="diffDeleted" >' . $value . '</span><br />' . "\n" ; //juan carlos muestra solo color
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
/**
|
|
|
* Table format line function
|
|
|
* @see format_line
|
|
|
*/
|
|
|
function format_table_line( $line, $type, $value, $skip_empty = false )
|
|
|
{
|
|
|
if ( trim( $value ) == "" && $skip_empty )
|
|
|
{
|
|
|
return "";
|
|
|
}
|
|
|
elseif ( trim( $value ) == "" )
|
|
|
{
|
|
|
$value = ' ';
|
|
|
}
|
|
|
|
|
|
switch ( $type )
|
|
|
{
|
|
|
case DIFF_EQUAL:
|
|
|
{
|
|
|
//return '<tr><td>' . $line. ' : ' . ' =</td><td><span class="diffEqual" >' . $value . '</span></td></tr>' . "\n"; //juan carlos comentado
|
|
|
return '<tr><td></td><td bgcolor="#FFFFFF">'. $value . '</td></tr>' . "\n" ; //juan carlos muestra solo color (no tambi<EFBFBD>n la l<EFBFBD>nea). Adem<EFBFBD>s EN IEXPLORER VA BIEN PERO EN FIREFOX 3 la etiqueta span no muestra el color de fondo que est<EFBFBD> definido en la hoja de estilos como background-color, aceptando s<EFBFBD>lo la propiedad color pero esta solo da color al texto con lo cual los cambios quedan poco resaltados, adem<EFBFBD>s los cambios de otros objetos que no sean texto no se indican por ej. a<EFBFBD>adir una imagen, por esta raz<EFBFBD>n doy el color de fondo al td directamente.
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_MOVED:
|
|
|
{
|
|
|
// return '<tr><td>' . $line. ' : ' . ' M</td><td><span class="diffMoved" >' . $value . '</span></td></tr>' . "\n" //juan carlos comenta
|
|
|
;
|
|
|
return '<tr><td></td><td bgcolor="#FFFFAA">'. $value . '</td></tr>' . "\n" ; //juan carlos muestra solo color (no tambi<EFBFBD>n la l<EFBFBD>nea). Adem<EFBFBD>s EN IEXPLORER VA BIEN PERO EN FIREFOX 3 la etiqueta span no muestra el color de fondo que est<EFBFBD> definido en la hoja de estilos como background-color, aceptando s<EFBFBD>lo la propiedad color pero esta solo da color al texto con lo cual los cambios quedan poco resaltados, adem<EFBFBD>s los cambios de otros objetos que no sean texto no se indican por ej. a<EFBFBD>adir una imagen, por esta raz<EFBFBD>n doy el color de fondo al td directamente.
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_ADDED:
|
|
|
{
|
|
|
// return '<tr><td>' . $line. ' : ' . ' +</td><td><span class="diffAdded" >' . $value . '</span></td></tr>' . "\n" ; //juan carlos comentado
|
|
|
return '<tr><td></td><td bgcolor="#CCFFCC">'. $value . '</td></tr>' . "\n" ; //juan carlos muestra solo color (no tambi<EFBFBD>n la l<EFBFBD>nea). Adem<EFBFBD>s EN IEXPLORER VA BIEN PERO EN FIREFOX 3 la etiqueta span no muestra el color de fondo que est<EFBFBD> definido en la hoja de estilos como background-color, aceptando s<EFBFBD>lo la propiedad color pero esta solo da color al texto con lo cual los cambios quedan poco resaltados, adem<EFBFBD>s los cambios de otros objetos que no sean texto no se indican por ej. a<EFBFBD>adir una imagen, por esta raz<EFBFBD>n doy el color de fondo al td directamente.
|
|
|
|
|
|
break;
|
|
|
}
|
|
|
case DIFF_DELETED:
|
|
|
{
|
|
|
// return '<tr><td>' . $line. ' : ' . ' -</td><td><span class="diffDeleted" >' . $value . '</span></td></tr>' . "\n" ; //juan carlos comentado
|
|
|
return '<tr><td></td><td bgcolor="#FFAAAA">'. $value . '</td></tr>' . "\n" ; //juan carlos muestra solo color (no tambi<EFBFBD>n la l<EFBFBD>nea). Adem<EFBFBD>s EN IEXPLORER VA BIEN PERO EN FIREFOX 3 la etiqueta span no muestra el color de fondo que est<EFBFBD> definido en la hoja de estilos como background-color, aceptando s<EFBFBD>lo la propiedad color pero esta solo da color al texto con lo cual los cambios quedan poco resaltados, adem<EFBFBD>s los cambios de otros objetos que no sean texto no se indican por ej. a<EFBFBD>adir una imagen, por esta raz<EFBFBD>n doy el color de fondo al td directamente.
|
|
|
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (! function_exists('array_diff_assoc') )
|
|
|
{
|
|
|
/**
|
|
|
* Replace array_diff_assoc()
|
|
|
*
|
|
|
* @link http://php.net/function.array_diff_assoc
|
|
|
* @author Aidan Lister <aidan@php.net>
|
|
|
* @since PHP 4.3.0
|
|
|
* @require PHP 4.0.0 (user_error)
|
|
|
*/
|
|
|
function array_diff_assoc()
|
|
|
{
|
|
|
// Check we have enough arguments
|
|
|
$args = func_get_args();
|
|
|
$count = count($args );
|
|
|
if (count($args ) < 2 )
|
|
|
{
|
|
|
trigger_error('Wrong parameter count for array_diff_assoc()', E_USER_WARNING );
|
|
|
return;
|
|
|
}
|
|
|
|
|
|
// Check arrays
|
|
|
for ($i = 0; $i < $count; $i++ )
|
|
|
{
|
|
|
if (! is_array($args[$i] ) )
|
|
|
{
|
|
|
trigger_error('array_diff_assoc() Argument #' . ($i + 1) . ' is not an array', E_USER_WARNING );
|
|
|
return;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Get the comparison array
|
|
|
$array_comp = array_shift($args );
|
|
|
--$count;
|
|
|
|
|
|
// Traverse values of the first array
|
|
|
foreach ($array_comp as $key => $value )
|
|
|
{
|
|
|
|
|
|
// Loop through the other arrays
|
|
|
for ($i = 0; $i < $count; $i++ )
|
|
|
{
|
|
|
// Loop through this arrays key/value pairs and compare
|
|
|
foreach ($args[$i] as $comp_key => $comp_value )
|
|
|
{
|
|
|
if ((string) $key === (string)$comp_key && (string) $value === (string) $comp_value )
|
|
|
{
|
|
|
|
|
|
unset($array_comp[$key] );
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
return $array_comp;
|
|
|
}
|
|
|
}
|
|
|
?>
|
|
|
|
