inflector.php

<?php
/*
	Copyright (c) 2005-2010 Bermi Ferrer Martinez

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*/
 
/**
 * Inflector for pluralize and singularize English nouns.
 *
 * This Inflector is a port of Ruby on Rails Inflector.
 *
 * It can be really helpful for developers that want to
 * create frameworks based on naming conventions rather than
 * configurations.
 *
 * You can find the inflector rules in config/inflector.yml
 * To add your own inflector rules, please do so in config/inflector/mydictionary.yml
 *
 * Using it:
 *
 * $this->pluralize('inglés',null,'es'); // ingleses, see config/inflector/es.yml
 *
 * @author Bermi Ferrer Martinez <bermi a.t bermilabs c.om>
 * @license GNU Lesser General Public License <http://www.gnu.org/copyleft/lesser.html>
 */
class Inflector
{

  /**
   * Pluralizes English nouns.
   *
   * @access public
   * @static
   * @param    string    $word    English noun to pluralize
   * @return string Plural noun
   */
  public function pluralize($word)
  {
    $plural = array(
      '/(quiz)$/i' => '\1zes',
      '/^(ox)$/i' => '\1en',
      '/([m|l])ouse$/i' => '\1ice',
      '/(matr|vert|ind)ix|ex$/i' => '\1ices',
      '/(x|ch|ss|sh)$/i' => '\1es',
      '/([^aeiouy]|qu)ies$/i' => '\1y',
      '/([^aeiouy]|qu)y$/i' => '\1ies',
      '/(hive)$/i' => '\1s',
      '/(?:([^f])fe|([lr])f)$/i' => '\1\2ves',
      '/sis$/i' => 'ses',
      '/([ti])um$/i' => '\1a',
      '/(buffal|tomat)o$/i' => '\1oes',
      '/(bu)s$/i' => '\1ses',
      '/(alias|status)/i'=> '\1es',
      '/(octop|vir)us$/i'=> '\1i',
      '/(ax|test)is$/i'=> '\1es',
      '/s$/i'=> 's',
      '/$/'=> 's');

    $uncountable = array('equipment', 'information', 'rice', 'money', 'species', 'series', 'fish', 'sheep');

    $irregular = array(
      'person' => 'people',
      'man' => 'men',
      'child' => 'children',
      'sex' => 'sexes',
      'move' => 'moves');

    $lowercased_word = strtolower($word);

    foreach ($uncountable as $_uncountable){
      if(substr($lowercased_word,(-1*strlen($_uncountable))) == $_uncountable){
        return $word;
      }
    }

    foreach ($irregular as $_plural=> $_singular){
      if (preg_match('/('.$_plural.')$/i', $word, $arr)) {
        return preg_replace('/('.$_plural.')$/i', substr($arr[0],0,1).substr($_singular,1), $word);
      }
    }

    foreach ($plural as $rule => $replacement) {
      if (preg_match($rule, $word)) {
        return preg_replace($rule, $replacement, $word);
      }
    }
    return false;

  }

  /**
   * Singularizes English nouns.
   *
   * @access public
   * @static
   * @param    string    $word    English noun to singularize
   * @return string Singular noun.
   */
  public function singularize($word)
  {
    $singular = array (
      '/(quiz)zes$/i' => '\1',
      '/(matr)ices$/i' => '\1ix',
      '/(vert|ind)ices$/i' => '\1ex',
      '/^(ox)en/i' => '\1',
      '/(alias|status)es$/i' => '\1',
      '/([octop|vir])i$/i' => '\1us',
      '/(cris|ax|test)es$/i' => '\1is',
      '/(shoe)s$/i' => '\1',
      '/(o)es$/i' => '\1',
      '/(bus)es$/i' => '\1',
      '/([m|l])ice$/i' => '\1ouse',
      '/(x|ch|ss|sh)es$/i' => '\1',
      '/(m)ovies$/i' => '\1ovie',
      '/(s)eries$/i' => '\1eries',
      '/([^aeiouy]|qu)ies$/i' => '\1y',
      '/([lr])ves$/i' => '\1f',
      '/(tive)s$/i' => '\1',
      '/(hive)s$/i' => '\1',
      '/([^f])ves$/i' => '\1fe',
      '/(^analy)ses$/i' => '\1sis',
      '/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)ses$/i' => '\1\2sis',
      '/([ti])a$/i' => '\1um',
      '/(n)ews$/i' => '\1ews',
      '/s$/i' => '',
    );

    $uncountable = array('equipment', 'information', 'rice', 'money', 'species', 'series', 'fish', 'sheep');

    $irregular = array(
      'person' => 'people',
      'man' => 'men',
      'child' => 'children',
      'sex' => 'sexes',
      'move' => 'moves');

    $lowercased_word = strtolower($word);
    foreach ($uncountable as $_uncountable){
      if(substr($lowercased_word,(-1*strlen($_uncountable))) == $_uncountable){
        return $word;
      }
    }

    foreach ($irregular as $_plural=> $_singular){
      if (preg_match('/('.$_singular.')$/i', $word, $arr)) {
        return preg_replace('/('.$_singular.')$/i', substr($arr[0],0,1).substr($_plural,1), $word);
      }
    }

    foreach ($singular as $rule => $replacement) {
      if (preg_match($rule, $word)) {
        return preg_replace($rule, $replacement, $word);
      }
    }

    return $word;
  }

  /**
   * Converts an underscored or CamelCase word into a English
   * sentence.
   *
   * The titleize public function converts text like "WelcomePage",
   * "welcome_page" or  "welcome page" to this "Welcome
   * Page".
   * If second parameter is set to 'first' it will only
   * capitalize the first character of the title.
   *
   * @access public
   * @static
   * @param    string    $word    Word to format as tile
   * @param    string    $uppercase    If set to 'first' it will only uppercase the
   * first character. Otherwise it will uppercase all
   * the words in the title.
   * @return string Text formatted as title
   */
  public function titleize($word, $uppercase = '')
  {
    $uppercase = $uppercase == 'first' ? 'ucfirst' : 'ucwords';
    return $uppercase($this->humanize($this->underscore($word)));
  }

  /**
   * Returns given word as CamelCased
   *
   * Converts a word like "send_email" to "SendEmail". It
   * will remove non alphanumeric character from the word, so
   * "who's online" will be converted to "WhoSOnline"
   *
   * @access public
   * @static
   * @see variablize
   * @param    string    $word    Word to convert to camel case
   * @return string UpperCamelCasedWord
   */
  public function camelize($word)
  {
    return str_replace(' ','',ucwords(preg_replace('/[^A-Z^a-z^0-9]+/',' ',$word)));
  }

  /**
   * Converts a word "into_it_s_underscored_version"
   *
   * Convert any "CamelCased" or "ordinary Word" into an
   * "underscored_word".
   *
   * This can be really useful for creating friendly URLs.
   *
   * @access public
   * @static
   * @param    string    $word    Word to underscore
   * @return string Underscored word
   */
  public function underscore($word)
  {
    return  strtolower(preg_replace('/[^A-Z^a-z^0-9]+/','_',
      preg_replace('/([a-zd])([A-Z])/','\1_\2',
      preg_replace('/([A-Z]+)([A-Z][a-z])/','\1_\2',$word))));
  }

  /**
   * Returns a human-readable string from $word
   *
   * Returns a human-readable string from $word, by replacing
   * underscores with a space, and by upper-casing the initial
   * character by default.
   *
   * If you need to uppercase all the words you just have to
   * pass 'all' as a second parameter.
   *
   * @access public
   * @static
   * @param    string    $word    String to "humanize"
   * @param    string    $uppercase    If set to 'all' it will uppercase all the words
   * instead of just the first one.
   * @return string Human-readable word
   */
  public function humanize($word, $uppercase = '')
  {
    $uppercase = $uppercase == 'all' ? 'ucwords' : 'ucfirst';
    return $uppercase(str_replace('_',' ',preg_replace('/_id$/', '',$word)));
  }

  /**
   * Same as camelize but first char is underscored
   *
   * Converts a word like "send_email" to "sendEmail". It
   * will remove non alphanumeric character from the word, so
   * "who's online" will be converted to "whoSOnline"
   *
   * @access public
   * @static
   * @see camelize
   * @param    string    $word    Word to lowerCamelCase
   * @return string Returns a lowerCamelCasedWord
   */
  public function variablize($word)
  {
    $word = $this->camelize($word);
    return strtolower($word[0]).substr($word,1);
  }

  /**
   * Converts a class name to its table name according to rails
   * naming conventions.
   *
   * Converts "Person" to "people"
   *
   * @access public
   * @static
   * @see classify
   * @param    string    $class_name    Class name for getting related table_name.
   * @return string plural_table_name
   */
  public function tableize($class_name)
  {
    return $this->pluralize($this->underscore($class_name));
  }

  /**
   * Converts a table name to its class name according to rails
   * naming conventions.
   *
   * Converts "people" to "Person"
   *
   * @access public
   * @static
   * @see tableize
   * @param    string    $table_name    Table name for getting related ClassName.
   * @return string SingularClassName
   */
  public function classify($table_name)
  {
    return $this->camelize($this->singularize($table_name));
  }

  /**
   * Converts number to its ordinal English form.
   *
   * This method converts 13 to 13th, 2 to 2nd ...
   *
   * @access public
   * @static
   * @param    integer    $number    Number to get its ordinal value
   * @return string Ordinal representation of given string.
   */
  public function ordinalize($number)
  {
    if (in_array(($number % 100),range(11,13))){
      return $number.'th';
    } else {
      switch (($number % 10)) {
      case 1:
        return $number.'st';
        break;
      case 2:
        return $number.'nd';
        break;
      case 3:
        return $number.'rd';
      default:
        return $number.'th';
        break;
      }
    }
  }

}
?>