Version 1

[yaffs-website] / vendor / sebastian / diff / src / Parser.php

diff --git a/vendor/sebastian/diff/src/Parser.php b/vendor/sebastian/diff/src/Parser.php
new file mode 100644 (file)
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+++ b/vendor/sebastian/diff/src/Parser.php
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+<?php
+/*
+ * This file is part of the Diff package.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace SebastianBergmann\Diff;
+
+/**
+ * Unified diff parser.
+ */
+class Parser
+{
+    /**
+     * @param string $string
+     *
+     * @return Diff[]
+     */
+    public function parse($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 {
+                if (preg_match('/^(?:diff --git |index [\da-f\.]+|[+-]{3} [ab])/', $lines[$i])) {
+                    continue;
+                }
+                $collected[] = $lines[$i];
+            }
+        }
+
+        if (count($collected) && ($diff !== null)) {
+            $this->parseFileDiff($diff, $collected);
+            $diffs[] = $diff;
+        }
+
+        return $diffs;
+    }
+
+    /**
+     * @param Diff  $diff
+     * @param array $lines
+     */
+    private function parseFileDiff(Diff $diff, array $lines)
+    {
+        $chunks = array();
+
+        foreach ($lines as $line) {
+            if (preg_match('/^@@\s+-(?P<start>\d+)(?:,\s*(?P<startrange>\d+))?\s+\+(?P<end>\d+)(?:,\s*(?P<endrange>\d+))?\s+@@/', $line, $match)) {
+                $chunk = new Chunk(
+                    $match['start'],
+                    isset($match['startrange']) ? max(1, $match['startrange']) : 1,
+                    $match['end'],
+                    isset($match['endrange']) ? max(1, $match['endrange']) : 1
+                );
+
+                $chunks[]  = $chunk;
+                $diffLines = array();
+                continue;
+            }
+
+            if (preg_match('/^(?P<type>[+ -])?(?P<line>.*)/', $line, $match)) {
+                $type = Line::UNCHANGED;
+
+                if ($match['type'] == '+') {
+                    $type = Line::ADDED;
+                } elseif ($match['type'] == '-') {
+                    $type = Line::REMOVED;
+                }
+
+                $diffLines[] = new Line($type, $match['line']);
+
+                if (isset($chunk)) {
+                    $chunk->setLines($diffLines);
+                }
+            }
+        }
+
+        $diff->setChunks($chunks);
+    }
+}