post_install_helper.php

#!/usr/bin/env php
<?php


// Argument handling from command line and from web browser.
foreach ($argv as $arg) {
  echo $arg . "\n";
  $e=explode("=",$arg);
  if(count($e)==2)
    $_GET[$e[0]]=$e[1];
  else
    $_GET[$e[0]]=0;
}

if (isset($_GET['file_path']))
  $file_path = $_GET['file_path'];
if (isset($_GET['old_text']))
  $old_text = $_GET['old_text'];
if (isset($_GET['new_text']))
  $new_text = $_GET['new_text'];
if (isset($_GET['force_split']))
  $force_split = $_GET['force_split'];

if (empty($file_path)) {
  $file_path = 'html/sites/default/settings.php';
}
if (!isset($force_split)) {
  $force_split = 'neither';
}

if (($force_split != 'dev' && $force_split != 'live') && empty($old_text)) {
  echo "\n\n";
  echo "Usage: post_install_helper.php file_path='path/to/file.txt' old_text='old_text' new_text='new_text' # Custom path to filename.\n";
  echo "OR\n";
  echo "Usage: post_install_helper.php old_text='old_text' new_text='new_text' # No path or file specified, default file = html/sites/default/settings.php\n";
  echo "OR\n";
  echo "Usage: post_install_helper.php force_split='live'\n";
  echo "OR\n";
  echo "Usage: post_install_helper.php force_split='dev'\n";
  echo "\n\n";
  exit;
}

if ($force_split == 'dev') {
  chmod('html/sites/default', 0775); // Allow $file_path (settings) to be modified.
  chmod($file_path, 0664); // Allow $file_path (settings) to be modified.
  $old_text = "config['config_split.config_split.dev']['status'] = FALSE";
  $new_text = "config['config_split.config_split.dev']['status'] = TRUE";
  replace_in_file($file_path, $old_text, $new_text);
  $old_text = "config['config_split.config_split.live']['status'] = TRUE";
  $new_text = "config['config_split.config_split.live']['status'] = FALSE";
  replace_in_file($file_path, $old_text, $new_text);
  echo 'dev' . "\n";
  chmod($file_path, 0444); // Restore permissions, could make this 440 but this is only dev.
  chmod('html/sites/default', 0555); // Allow $file_path (settings) to be modified.
  exit;
}
if ($force_split == 'live') {
  chmod('html/sites/default', 0775); // Allow $file_path (settings) to be modified.
  chmod($file_path, 0664); // Allow $file_path (settings) to be modified.
  $old_text = "config['config_split.config_split.dev']['status'] = TRUE";
  $new_text = "config['config_split.config_split.dev']['status'] = FALSE";
  replace_in_file($file_path, $old_text, $new_text);
  $old_text = "config['config_split.config_split.live']['status'] = FALSE";
  $new_text = "config['config_split.config_split.live']['status'] = TRUE";
  replace_in_file($file_path, $old_text, $new_text);
  echo 'live' . "\n";
  chmod($file_path, 0440); // Restore permissions, make this more secure in 'live' environments.
  chmod('html/sites/default', 0555); // Allow $file_path (settings) to be modified.
  exit;
}

replace_in_file($file_path, $old_text, $new_text);
/**
 * Replaces a string in a file
 *
 * @param string $file_path
 * @param string $old_text text to be replaced
 * @param string $new_text new text
 * @return array $Result status (success | error) & message (file exist, file permissions)
 */
function replace_in_file($file_path = 'html/sites/default/settings.php', $old_text, $new_text)
{
  $Result = array('status' => 'error', 'message' => '');
  if(file_exists($file_path)===TRUE)
  {
    if(is_writeable($file_path))
    {
      try
      {
        $FileContent = file_get_contents($file_path);
        $FileContent = str_replace($old_text, $new_text, $FileContent);
        if(file_put_contents($file_path, $FileContent) > 0)
        {
          $Result["status"] = 'success';
        }
        else
        {
          $Result["message"] = 'Error while writing file';
        }
      }
      catch(Exception $e)
      {
        $Result["message"] = 'Error : '.$e;
      }
    }
    else
    {
      $Result["message"] = 'File '.$file_path.' is not writable !';
    }
  }
  else
  {
    $Result["message"] = 'File '.$file_path.' does not exist !';
  }
  return $Result;
}