Move wisski instance code to separate package

internal/wisski/instances/barrel/wisskiutils/settings_php_set.sh

@@ -0,0 +1,60 @@
+#!/bin/bash
+
+# settings_php_set.sh name value
+# Sets the 'settings.php' setting 'name' to 'value'.
+# Value must be json-encoded. 
+
+NAME=$1
+VALUE=$2
+
+if [ -z "$NAME" ]; then
+    echo "Usage: settings_php_set.sh NAME VALUE"
+    exit 1
+fi;
+
+if [ -z "$VALUE" ]; then
+    echo "Usage: settings_php_set.sh NAME VALUE"
+    exit 1
+fi;
+
+cd /var/www/data/project
+chmod u+w web/sites/default/settings.php
+
+(echo "$NAME"; echo "$VALUE" ) | drush php:eval '
+    if(is_file(DRUPAL_ROOT . "/internal/")) {
+        include_once DRUPAL_ROOT . "/internal/core/includes/install.inc";
+    } else {
+        include_once DRUPAL_ROOT . "/core/includes/install.inc";
+    }
+
+    // read NAME and VALUE from STDIN
+    $content=file_get_contents("php://stdin");  
+    $newline=strpos($content, "\n");
+    $name=trim(substr($content, 0, $newline));
+    $jvalue=trim(substr($content, $newline + 1));
+
+    // decode json values
+    $value = @json_decode($jvalue);
+    if ($value === null && json_last_error() !== JSON_ERROR_NONE) {
+        echo "Invalid JSON, cannot update settings.php. \n";
+        return 1;
+    }
+
+    // make parameters to drush_rewrite_settings
+    $settings["settings"][$name] = (object)[
+        "value" => $value,
+        "required" => TRUE,
+    ];
+
+    // find the actual settings.php file to rewrite
+    $filename = DRUPAL_ROOT . "/" . \Drupal::service("site.path") . "/settings.php";
+    drupal_rewrite_settings($settings, $filename);
+
+    echo "Wrote " . $filename . "\n";
+    return 0;   
+';
+EXIT=$?
+
+chmod u-w web/sites/default/settings.php
+
+exit $?