/usr/share/php/SebastianBergmann/Diff/Parser.php is in phpunit-diff 1.1.0-1.
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/**
* Diff
*
* Copyright (c) 2001-2013, Sebastian Bergmann <sebastian@phpunit.de>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of Sebastian Bergmann nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @package Diff
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @author Kore Nordmann <mail@kore-nordmann.de>
* @copyright 2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://www.github.com/sebastianbergmann/diff
*/
namespace SebastianBergmann\Diff;
/**
* Unified diff parser.
*
* @package Diff
* @author Sebastian Bergmann <sebastian@phpunit.de>
* @author Kore Nordmann <mail@kore-nordmann.de>
* @copyright 2001-2013 Sebastian Bergmann <sebastian@phpunit.de>
* @license http://www.opensource.org/licenses/BSD-3-Clause The BSD 3-Clause License
* @link http://www.github.com/sebastianbergmann/diff
*/
class Parser
{
public function parse($string)
{
$lines = preg_split('(\r\n|\r|\n)', $string);
$lineCount = count($lines);
$diffs = array();
$diff = null;
$collected = array();
for ($i = 0; $i < $lineCount; ++$i) {
if (preg_match('(^---\\s+(?P<file>\\S+))', $lines[$i], $fromMatch) &&
preg_match('(^\\+\\+\\+\\s+(?P<file>\\S+))', $lines[$i + 1], $toMatch)) {
if ($diff !== null) {
$this->parseFileDiff($diff, $collected);
$diffs[] = $diff;
$collected = array();
}
$diff = new Diff($fromMatch['file'], $toMatch['file']);
++$i;
} else {
$collected[] = $lines[$i];
}
}
if (count($collected) && ($diff !== null)) {
$this->parseFileDiff($diff, $collected);
$diffs[] = $diff;
}
return $diffs;
}
private function parseFileDiff(Diff $diff, array $lines)
{
$chunks = array();
while (count($lines)) {
while (!preg_match('(^@@\\s+-(?P<start>\\d+)(?:,\\s*(?P<startrange>\\d+))?\\s+\\+(?P<end>\\d+)(?:,\\s*(?P<endrange>\\d+))?\\s+@@)', $last = array_shift($lines), $match)) {
if ($last === null) {
break 2;
}
}
$chunk = new Chunk(
$match['start'],
isset($match['startrange']) ? max(1, $match['startrange']) : 1,
$match['end'],
isset($match['endrange']) ? max(1, $match['endrange']) : 1
);
$diffLines = array();
$last = null;
while (count($lines) &&
(preg_match('(^(?P<type>[+ -])(?P<line>.*))', $last = array_shift($lines), $match) ||
(strpos($last, '\\ No newline at end of file' ) === 0))) {
if (count($match)) {
$type = Line::UNCHANGED;
if ($match['type'] == '+') {
$type = Line::ADDED;
} else if ($match['type'] == '-') {
$type = Line::REMOVED;
}
$diffLines[] = new Line($type, $match['line']);
}
}
$chunk->setLines($diffLines);
$chunks[] = $chunk;
if ($last !== null) {
array_unshift($lines, $last);
}
}
$diff->setChunks($chunks);
}
}
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