Add generate diffs file

Author: dinncer

generate-diffs.php

@@ -0,0 +1,84 @@
+<?php
+
+define('LARAVEL_FOLDER', 'laravel');
+define('DIFF_FOLDER', 'diffs');
+define('TAGS_FILE', 'tags.txt');
+
+/**
+ * Generate Diff Files
+ *
+ * @param  float $v1
+ * @param  float $v2
+ * @return void
+ */
+function generateDiffFile($v1, $v2)
+{
+    $file = sprintf('%s/%s...%s.diff', DIFF_FOLDER, $v1, $v2);
+
+    if (!file_exists($file)) {
+        exec(sprintf('git --git-dir %s/.git diff %s %s > %s', LARAVEL_FOLDER, $v1, $v2, $file));
+    }
+}
+
+/**
+ * Tag version formatter.
+ *
+ * @param  string $v
+ * @return string
+ */
+function versionFormat($version)
+{
+    return str_replace('v', '', $version);
+}
+
+if (!file_exists(DIFF_FOLDER)) {
+    mkdir(DIFF_FOLDER);
+}
+
+if (!file_exists(LARAVEL_FOLDER)) {
+    exec(sprintf('git clone https://github.com/laravel/laravel.git %s', LARAVEL_FOLDER));
+}
+
+$versionList = shell_exec(sprintf('git --git-dir %s/.git tag --sort=refname | grep -v "v3\|v4\|v5.0\|v5.1\|v5.2\|v5.3\|v5.4" | cat', LARAVEL_FOLDER));
+$versionList = explode(PHP_EOL, trim($versionList));
+
+usort($versionList, function ($v1, $v2) {
+    return version_compare(versionFormat($v1), versionFormat($v2));
+});
+
+file_put_contents(TAGS_FILE, implode(PHP_EOL, $versionList));
+
+foreach ($versionList as $index => $baseVersion) {
+    echo $baseVersion.PHP_EOL;
+
+    $latestVersion = null;
+
+    foreach ($versionList as $version) {
+        if ($version === $baseVersion) {
+            continue;
+        }
+
+        if (explode('.', $version)[0] != explode('.', $baseVersion)[0]) {
+            continue;
+        }
+
+        if (version_compare(versionFormat($baseVersion), versionFormat($version)) === 1) {
+            continue;
+        }
+
+        $latestVersion = $version;
+
+        generateDiffFile($baseVersion, $version);
+    }
+
+    if (!is_null($latestVersion)) {
+        $vIndex = array_search($latestVersion, $versionList);
+        $vIndex++;
+
+        if (isset($versionList[$vIndex])) {
+            generateDiffFile($baseVersion, $versionList[$vIndex]);
+        };
+    }
+}
+
+echo 'DONE';