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<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Validator\File;
use Zend\Validator\AbstractValidator;
use Zend\Validator\Exception;
/**
* Validator for counting all words in a file
*/
class WordCount extends AbstractValidator
{
/**
* @const string Error constants
*/
const TOO_MUCH = 'fileWordCountTooMuch';
const TOO_LESS = 'fileWordCountTooLess';
const NOT_FOUND = 'fileWordCountNotFound';
/**
* @var array Error message templates
*/
protected $messageTemplates = array(
self::TOO_MUCH => "Too many words, maximum '%max%' are allowed but '%count%' were counted",
self::TOO_LESS => "Too few words, minimum '%min%' are expected but '%count%' were counted",
self::NOT_FOUND => "File is not readable or does not exist",
);
/**
* @var array Error message template variables
*/
protected $messageVariables = array(
'min' => array('options' => 'min'),
'max' => array('options' => 'max'),
'count' => 'count'
);
/**
* Word count
*
* @var int
*/
protected $count;
/**
* Options for this validator
*
* @var array
*/
protected $options = array(
'min' => null, // Minimum word count, if null there is no minimum word count
'max' => null, // Maximum word count, if null there is no maximum word count
);
/**
* Sets validator options
*
* Min limits the word count, when used with max=null it is the maximum word count
* It also accepts an array with the keys 'min' and 'max'
*
* If $options is an integer, it will be used as maximum word count
* As Array is accepts the following keys:
* 'min': Minimum word count
* 'max': Maximum word count
*
* @param int|array|\Traversable $options Options for the adapter
*/
public function __construct($options = null)
{
if (is_string($options) || is_numeric($options)) {
$options = array('max' => $options);
}
if (1 < func_num_args()) {
$options['min'] = func_get_arg(0);
$options['max'] = func_get_arg(1);
}
parent::__construct($options);
}
/**
* Returns the minimum word count
*
* @return int
*/
public function getMin()
{
return $this->options['min'];
}
/**
* Sets the minimum word count
*
* @param int|array $min The minimum word count
* @return WordCount Provides a fluent interface
* @throws Exception\InvalidArgumentException When min is greater than max
*/
public function setMin($min)
{
if (is_array($min) and isset($min['min'])) {
$min = $min['min'];
}
if (!is_string($min) and !is_numeric($min)) {
throw new Exception\InvalidArgumentException('Invalid options to validator provided');
}
$min = (int) $min;
if (($this->getMax() !== null) && ($min > $this->getMax())) {
throw new Exception\InvalidArgumentException(
"The minimum must be less than or equal to the maximum word count, but $min > {$this->getMax()}"
);
}
$this->options['min'] = $min;
return $this;
}
/**
* Returns the maximum word count
*
* @return int
*/
public function getMax()
{
return $this->options['max'];
}
/**
* Sets the maximum file count
*
* @param int|array $max The maximum word count
* @return WordCount Provides a fluent interface
* @throws Exception\InvalidArgumentException When max is smaller than min
*/
public function setMax($max)
{
if (is_array($max) and isset($max['max'])) {
$max = $max['max'];
}
if (!is_string($max) and !is_numeric($max)) {
throw new Exception\InvalidArgumentException('Invalid options to validator provided');
}
$max = (int) $max;
if (($this->getMin() !== null) && ($max < $this->getMin())) {
throw new Exception\InvalidArgumentException(
"The maximum must be greater than or equal to the minimum word count, but $max < {$this->getMin()}"
);
}
$this->options['max'] = $max;
return $this;
}
/**
* Returns true if and only if the counted words are at least min and
* not bigger than max (when max is not null).
*
* @param string|array $value Filename to check for word count
* @param array $file File data from \Zend\File\Transfer\Transfer (optional)
* @return bool
*/
public function isValid($value, $file = null)
{
if (is_string($value) && is_array($file)) {
// Legacy Zend\Transfer API support
$filename = $file['name'];
$file = $file['tmp_name'];
} elseif (is_array($value)) {
if (!isset($value['tmp_name']) || !isset($value['name'])) {
throw new Exception\InvalidArgumentException(
'Value array must be in $_FILES format'
);
}
$file = $value['tmp_name'];
$filename = $value['name'];
} else {
$file = $value;
$filename = basename($file);
}
$this->setValue($filename);
// Is file readable ?
if (empty($file) || false === stream_resolve_include_path($file)) {
$this->error(self::NOT_FOUND);
return false;
}
$content = file_get_contents($file);
$this->count = str_word_count($content);
if (($this->getMax() !== null) && ($this->count > $this->getMax())) {
$this->error(self::TOO_MUCH);
return false;
}
if (($this->getMin() !== null) && ($this->count < $this->getMin())) {
$this->error(self::TOO_LESS);
return false;
}
return true;
}
}