Primo Committ

vendor/sebastian/diff/src/Output/DiffOnlyOutputBuilder.php

@@ -0,0 +1,72 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/diff.
+ *
+ * (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\Output;
+
+use function fclose;
+use function fopen;
+use function fwrite;
+use function stream_get_contents;
+use function substr;
+use SebastianBergmann\Diff\Differ;
+
+/**
+ * Builds a diff string representation in a loose unified diff format
+ * listing only changes lines. Does not include line numbers.
+ */
+final class DiffOnlyOutputBuilder implements DiffOutputBuilderInterface
+{
+    /**
+     * @var string
+     */
+    private $header;
+
+    public function __construct(string $header = "--- Original\n+++ New\n")
+    {
+        $this->header = $header;
+    }
+
+    public function getDiff(array $diff): string
+    {
+        $buffer = fopen('php://memory', 'r+b');
+
+        if ('' !== $this->header) {
+            fwrite($buffer, $this->header);
+
+            if ("\n" !== substr($this->header, -1, 1)) {
+                fwrite($buffer, "\n");
+            }
+        }
+
+        foreach ($diff as $diffEntry) {
+            if ($diffEntry[1] === Differ::ADDED) {
+                fwrite($buffer, '+' . $diffEntry[0]);
+            } elseif ($diffEntry[1] === Differ::REMOVED) {
+                fwrite($buffer, '-' . $diffEntry[0]);
+            } elseif ($diffEntry[1] === Differ::DIFF_LINE_END_WARNING) {
+                fwrite($buffer, ' ' . $diffEntry[0]);
+
+                continue; // Warnings should not be tested for line break, it will always be there
+            } else { /* Not changed (old) 0 */
+                continue; // we didn't write the non changs line, so do not add a line break either
+            }
+
+            $lc = substr($diffEntry[0], -1);
+
+            if ($lc !== "\n" && $lc !== "\r") {
+                fwrite($buffer, "\n"); // \No newline at end of file
+            }
+        }
+
+        $diff = stream_get_contents($buffer, -1, 0);
+        fclose($buffer);
+
+        return $diff;
+    }
+}