/var/www/(Del)gepgroup.hk/php-activerecord/lib/Utils.php


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<?php
/**
 *
 * @package ActiveRecord
 */

/*
 * Thanks to http://www.eval.ca/articles/php-pluralize (MIT license)
 *           http://dev.rubyonrails.org/browser/trunk/activesupport/lib/active_support/inflections.rb (MIT license)
 *           http://www.fortunecity.com/bally/durrus/153/gramch13.html
 *           http://www2.gsu.edu/~wwwesl/egw/crump.htm
 *
 * Changes (12/17/07)
 *   Major changes
 *   --
 *   Fixed irregular noun algorithm to use regular expressions just like the original Ruby source.
 *       (this allows for things like fireman -> firemen
 *   Fixed the order of the singular array, which was backwards.
 *
 *   Minor changes
 *   --
 *   Removed incorrect pluralization rule for /([^aeiouy]|qu)ies$/ => $1y
 *   Expanded on the list of exceptions for *o -> *oes, and removed rule for buffalo -> buffaloes
 *   Removed dangerous singularization rule for /([^f])ves$/ => $1fe
 *   Added more specific rules for singularizing lives, wives, knives, sheaves, loaves, and leaves and thieves
 *   Added exception to /(us)es$/ => $1 rule for houses => house and blouses => blouse
 *   Added excpetions for feet, geese and teeth
 *   Added rule for deer -> deer
 *
 * Changes:
 *   Removed rule for virus -> viri
 *   Added rule for potato -> potatoes
 *   Added rule for *us -> *uses
 */
namespace ActiveRecord;

use \
Closure;

function 
classify($class_name$singularize=false)
{
    if (
$singularize)
    
$class_name Utils::singularize($class_name);

    
$class_name Inflector::instance()->camelize($class_name);
    return 
ucfirst($class_name);
}

// http://snippets.dzone.com/posts/show/4660
function array_flatten(array $array)
{
    
$i 0;

    while (
$i count($array))
    {
        if (
is_array($array[$i]))
            
array_splice($array,$i,1,$array[$i]);
        else
            ++
$i;
    }
    return 
$array;
}

/**
 * Somewhat naive way to determine if an array is a hash.
 */
function is_hash(&$array)
{
    if (!
is_array($array))
        return 
false;

    
$keys array_keys($array);
    return @
is_string($keys[0]) ? true false;
}

/**
 * Strips a class name of any namespaces and namespace operator.
 *
 * @param string $class
 * @return string stripped class name
 * @access public
 */
function denamespace($class_name)
{
    if (
is_object($class_name))
        
$class_name get_class($class_name);

    if (
has_namespace($class_name))
    {
        
$parts explode('\\'$class_name);
        return 
end($parts);
    }
    return 
$class_name;
}

function 
get_namespaces($class_name)
{
    if (
has_namespace($class_name))
        return 
explode('\\'$class_name);
    return 
null;
}

function 
has_namespace($class_name)
{
    if (
strpos($class_name'\\') !== false)
        return 
true;
    return 
false;
}

/**
 * Returns true if all values in $haystack === $needle
 * @param $needle
 * @param $haystack
 * @return unknown_type
 */
function all($needle, array $haystack)
{
    foreach (
$haystack as $value)
    {
        if (
$value !== $needle)
            return 
false;
    }
    return 
true;
}

function 
collect(&$enumerable$name_or_closure)
{
    
$ret = array();

    foreach (
$enumerable as $value)
    {
        if (
is_string($name_or_closure))
            
$ret[] = is_array($value) ? $value[$name_or_closure] : $value->$name_or_closure;
        elseif (
$name_or_closure instanceof Closure)
            
$ret[] = $name_or_closure($value);
    }
    return 
$ret;
}

/**
 * Wrap string definitions (if any) into arrays.
 */
function wrap_strings_in_arrays(&$strings)
{
    if (!
is_array($strings))
        
$strings = array(array($strings));
    else 
    {
        foreach (
$strings as &$str)
        {
            if (!
is_array($str))
                
$str = array($str);
        }
    }
    return 
$strings;
}

/**
 * Some internal utility functions.
 *
 * @package ActiveRecord
 */
class Utils
{
    public static function 
extract_options($options)
    {
        return 
is_array(end($options)) ? end($options) : array();
    }

    public static function 
add_condition(&$conditions=array(), $condition$conjuction='AND')
    {
        if (
is_array($condition))
        {
            if (empty(
$conditions))
                
$conditions array_flatten($condition);
            else
            {
                
$conditions[0] .= $conjuction " array_shift($condition);
                
$conditions[] = array_flatten($condition);
            }
        }
        elseif (
is_string($condition))
            
$conditions[0] .= $conjuction $condition";

        return 
$conditions;
    }

    public static function 
human_attribute($attr)
    {
        
$inflector Inflector::instance();
        
$inflected $inflector->variablize($attr);
        
$normal $inflector->uncamelize($inflected);

        return 
ucfirst(str_replace('_'' '$normal));
    }

    public static function 
is_odd($number)
    {
        return 
$number 1;
    }

    public static function 
is_a($type$var)
    {
        switch(
$type)
        {
            case 
'range':
                if (
is_array($var) && (int)$var[0] < (int)$var[1])
                    return 
true;

        }

        return 
false;
    }

    public static function 
is_blank($var)
    {
        return 
=== strlen($var);
    }

    private static 
$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)y$/i'      => "$1ies",
        
'/(hive)$/i'               => "$1s",
        
'/(?:([^f])fe|([lr])f)$/i' => "$1$2ves",
        
'/(shea|lea|loa|thie)f$/i' => "$1ves",
        
'/sis$/i'                  => "ses",
        
'/([ti])um$/i'             => "$1a",
        
'/(tomat|potat|ech|her|vet)o$/i'=> "$1oes",
        
'/(bu)s$/i'                => "$1ses",
        
'/(alias)$/i'              => "$1es",
        
'/(octop)us$/i'            => "$1i",
        
'/(ax|test)is$/i'          => "$1es",
        
'/(us)$/i'                 => "$1es",
        
'/s$/i'                    => "s",
        
'/$/'                      => "s"
    
);

    private static 
$singular = array(
        
'/(quiz)zes$/i'             => "$1",
        
'/(matr)ices$/i'            => "$1ix",
        
'/(vert|ind)ices$/i'        => "$1ex",
        
'/^(ox)en$/i'               => "$1",
        
'/(alias)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",
        
'/(li|wi|kni)ves$/i'        => "$1fe",
        
'/(shea|loa|lea|thie)ves$/i'=> "$1f",
        
'/(^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",
        
'/(h|bl)ouses$/i'           => "$1ouse",
        
'/(corpse)s$/i'             => "$1",
        
'/(us)es$/i'                => "$1",
        
'/(us|ss)$/i'               => "$1",
        
'/s$/i'                     => ""
    
);

    private static 
$irregular = array(
        
'move'   => 'moves',
        
'foot'   => 'feet',
        
'goose'  => 'geese',
        
'sex'    => 'sexes',
        
'child'  => 'children',
        
'man'    => 'men',
        
'tooth'  => 'teeth',
        
'person' => 'people'
    
);

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

    public static function 
pluralize$string )
    {
        
// save some time in the case that singular and plural are the same
        
if ( in_arraystrtolower$string ), self::$uncountable ) )
            return 
$string;

        
// check for irregular singular forms
        
foreach ( self::$irregular as $pattern => $result )
        {
            
$pattern '/' $pattern '$/i';

            if ( 
preg_match$pattern$string ) )
                return 
preg_replace$pattern$result$string);
        }

        
// check for matches using regular expressions
        
foreach ( self::$plural as $pattern => $result )
        {
            if ( 
preg_match$pattern$string ) )
                return 
preg_replace$pattern$result$string );
        }

        return 
$string;
    }

    public static function 
singularize$string )
    {
        
// save some time in the case that singular and plural are the same
        
if ( in_arraystrtolower$string ), self::$uncountable ) )
            return 
$string;

        
// check for irregular plural forms
        
foreach ( self::$irregular as $result => $pattern )
        {
            
$pattern '/' $pattern '$/i';

            if ( 
preg_match$pattern$string ) )
                return 
preg_replace$pattern$result$string);
        }

        
// check for matches using regular expressions
        
foreach ( self::$singular as $pattern => $result )
        {
            if ( 
preg_match$pattern$string ) )
                return 
preg_replace$pattern$result$string );
        }

        return 
$string;
    }

    public static function 
pluralize_if($count$string)
    {
        if (
$count == 1)
            return 
$string;
        else
            return 
self::pluralize($string);
    }

    public static function 
squeeze($char$string)
    {
        return 
preg_replace("/$char+/",$char,$string);
    }
};
?>