/**
   * @fileoverview Common utilities.
   */
  "use strict";
  
  //------------------------------------------------------------------------------
  // Constants
  //------------------------------------------------------------------------------
  
  var PLUGIN_NAME_PREFIX = "eslint-plugin-",
      NAMESPACE_REGEX = /^@.*\//i;
  
  //------------------------------------------------------------------------------
  // Public Interface
  //------------------------------------------------------------------------------
  
  
  /**
   * Removes the prefix `eslint-plugin-` from a plugin name.
   * @param {string} pluginName The name of the plugin which may have the prefix.
   * @returns {string} The name of the plugin without prefix.
   */
  function removePluginPrefix(pluginName) {
      return pluginName.indexOf(PLUGIN_NAME_PREFIX) === 0 ? pluginName.substring(PLUGIN_NAME_PREFIX.length) : pluginName;
  }
  
  /**
   * @param {string} pluginName The name of the plugin which may have the prefix.
   * @returns {string} The name of the plugins namepace if it has one.
   */
  function getNamespace(pluginName) {
      return pluginName.match(NAMESPACE_REGEX) ? pluginName.match(NAMESPACE_REGEX)[0] : "";
  }
  
  /**
   * Removes the namespace from a plugin name.
   * @param {string} pluginName The name of the plugin which may have the prefix.
   * @returns {string} The name of the plugin without the namespace.
   */
  function removeNameSpace(pluginName) {
      return pluginName.replace(NAMESPACE_REGEX, "");
  }
  
  module.exports = {
      removePluginPrefix: removePluginPrefix,
      getNamespace: getNamespace,
      removeNameSpace: removeNameSpace,
      "PLUGIN_NAME_PREFIX": PLUGIN_NAME_PREFIX
  };