128 lines
3.8 KiB
PHP
128 lines
3.8 KiB
PHP
<?php
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/**
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* Context diff generator for PHP DiffLib.
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*
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* PHP version 5
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*
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* Copyright (c) 2009 Chris Boulton <chris.boulton@interspire.com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the Chris Boulton nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* @package DiffLib
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* @author Chris Boulton <chris.boulton@interspire.com>
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* @copyright (c) 2009 Chris Boulton
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* @license New BSD License http://www.opensource.org/licenses/bsd-license.php
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* @version 1.1
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* @link http://github.com/chrisboulton/php-diff
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*/
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require_once dirname(__FILE__).'/../Abstract.php';
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class Diff_Renderer_Text_Context extends Diff_Renderer_Abstract
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{
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/**
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* @var array Array of the different opcode tags and how they map to the context diff equivalent.
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*/
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private $tagMap = array(
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'insert' => '+',
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'delete' => '-',
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'replace' => '!',
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'equal' => ' '
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);
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/**
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* Render and return a context formatted (old school!) diff file.
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*
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* @return string The generated context diff.
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*/
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public function render()
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{
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$diff = '';
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$opCodes = $this->diff->getGroupedOpcodes();
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foreach($opCodes as $group) {
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$diff .= "***************\n";
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$lastItem = count($group)-1;
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$i1 = $group[0][1];
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$i2 = $group[$lastItem][2];
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$j1 = $group[0][3];
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$j2 = $group[$lastItem][4];
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if($i2 - $i1 >= 2) {
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$diff .= '*** '.($group[0][1] + 1).','.$i2." ****\n";
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}
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else {
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$diff .= '*** '.$i2." ****\n";
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}
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if($j2 - $j1 >= 2) {
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$separator = '--- '.($j1 + 1).','.$j2." ----\n";
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}
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else {
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$separator = '--- '.$j2." ----\n";
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}
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$hasVisible = false;
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foreach($group as $code) {
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if($code[0] == 'replace' || $code[0] == 'delete') {
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$hasVisible = true;
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break;
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}
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}
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if($hasVisible) {
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foreach($group as $code) {
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list($tag, $i1, $i2, $j1, $j2) = $code;
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if($tag == 'insert') {
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continue;
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}
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$diff .= $this->tagMap[$tag].' '.implode("\n".$this->tagMap[$tag].' ', $this->diff->GetA($i1, $i2))."\n";
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}
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}
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$hasVisible = false;
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foreach($group as $code) {
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if($code[0] == 'replace' || $code[0] == 'insert') {
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$hasVisible = true;
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break;
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}
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}
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$diff .= $separator;
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if($hasVisible) {
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foreach($group as $code) {
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list($tag, $i1, $i2, $j1, $j2) = $code;
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if($tag == 'delete') {
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continue;
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}
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$diff .= $this->tagMap[$tag].' '.implode("\n".$this->tagMap[$tag].' ', $this->diff->GetB($j1, $j2))."\n";
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}
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}
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}
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return $diff;
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}
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} |