pre-commit hook to disallow commit with SCSS file but without CSS file

.make/git-hooks/pre-commit.php

@@ -0,0 +1,49 @@
+#!/usr/bin/php
+<?php
+/**
+ * Reject any commit containing .scss files, but no .css file !
+ */
+
+echo "Checking files staged...\n";
+$sFilesToCommit = shell_exec('git diff --cached --name-only --diff-filter=ACMRT');
+$aFilesToCommit = explode("\n", $sFilesToCommit);
+
+$aScssFiles = GetFilesWithExtension('scss', $aFilesToCommit);
+if (count($aScssFiles) === 0) {
+    echo "No scss file : OK to go !\n";
+    exit(0);
+}
+
+$aCssFiles = GetFilesWithExtension('css', $aFilesToCommit);
+if (count($aCssFiles) === 0) {
+    echo "There are SCSS files staged but no CSS file : REJECTING commit.\n";
+    echo "You must push the compiled SCSS files by running the setup !\n";
+    exit(1);
+}
+
+echo "We have SCSS but also CSS => OK to commit !\n";
+exit(0);
+
+
+
+function GetFilesWithExtension($sExtension, $aFiles) {
+    return array_filter(
+        $aFiles,
+        function($item) use ($sExtension) {
+            return (endsWith($item, '.'.$sExtension));
+        }
+    );
+}
+
+function endsWith( $haystack, $needle ) {
+    $length = strlen( $needle );
+    if( !$length ) {
+        return true;
+    }
+    return substr( $haystack, -$length ) === $needle;
+}
+
+function exitWithMessage($sMessage, $iCode) {
+    echo $sMessage;
+    exit($iCode);
+}