<?php
/**
* CFormatter class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright 2008-2013 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CFormatter provides a set of commonly used data formatting methods.
*
* The formatting methods provided by CFormatter are all named in the form of <code>formatXyz</code>.
* The behavior of some of them may be configured via the properties of CFormatter. For example,
* by configuring {@link dateFormat}, one may control how {@link formatDate} formats the value into a date string.
*
* For convenience, CFormatter also implements the mechanism of calling formatting methods with their shortcuts (called types).
* In particular, if a formatting method is named <code>formatXyz</code>, then its shortcut method is <code>xyz</code>
* (case-insensitive). For example, calling <code>$formatter->date($value)</code> is equivalent to calling
* <code>$formatter->formatDate($value)</code>.
*
* Currently, the following types are recognizable:
* <ul>
* <li>raw: the attribute value will not be changed at all.</li>
* <li>text: the attribute value will be HTML-encoded when rendering.</li>
* <li>ntext: the {@link formatNtext} method will be called to format the attribute value as a HTML-encoded plain text with newlines converted as the HTML <br /> or <p></p> tags.</li>
* <li>html: the attribute value will be purified and then returned.</li>
* <li>date: the {@link formatDate} method will be called to format the attribute value as a date.</li>
* <li>time: the {@link formatTime} method will be called to format the attribute value as a time.</li>
* <li>datetime: the {@link formatDatetime} method will be called to format the attribute value as a date with time.</li>
* <li>boolean: the {@link formatBoolean} method will be called to format the attribute value as a boolean display.</li>
* <li>number: the {@link formatNumber} method will be called to format the attribute value as a number display.</li>
* <li>email: the {@link formatEmail} method will be called to format the attribute value as a mailto link.</li>
* <li>image: the {@link formatImage} method will be called to format the attribute value as an image tag where the attribute value is the image URL.</li>
* <li>url: the {@link formatUrl} method will be called to format the attribute value as a hyperlink where the attribute value is the URL.</li>
* <li>size: the {@link formatSize} method will be called to format the attribute value, interpreted as a number of bytes, as a size in human readable form.</li>
* </ul>
*
* By default, {@link CApplication} registers {@link CFormatter} as an application component whose ID is 'format'.
* Therefore, one may call <code>Yii::app()->format->boolean(1)</code>.
* You might want to replace this component with {@link CLocalizedFormatter} to enable formatting based on the
* current locale settings.
*
* @property CHtmlPurifier $htmlPurifier The HTML purifier instance.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package system.utils
* @since 1.1.0
*/
class CFormatter extends CApplicationComponent
{
/**
* @var CHtmlPurifier
*/
private $_htmlPurifier;
/**
* @var string the format string to be used to format a date using PHP date() function. Defaults to 'Y/m/d'.
*/
public $dateFormat='Y/m/d';
/**
* @var string the format string to be used to format a time using PHP date() function. Defaults to 'h:i:s A'.
*/
public $timeFormat='h:i:s A';
/**
* @var string the format string to be used to format a date and time using PHP date() function. Defaults to 'Y/m/d h:i:s A'.
*/
public $datetimeFormat='Y/m/d h:i:s A';
/**
* @var array the format used to format a number with PHP number_format() function.
* Three elements may be specified: "decimals", "decimalSeparator" and "thousandSeparator".
* They correspond to the number of digits after the decimal point, the character displayed as the decimal point
* and the thousands separator character.
*/
public $numberFormat=array('decimals'=>null, 'decimalSeparator'=>null, 'thousandSeparator'=>null);
/**
* @var array the text to be displayed when formatting a boolean value. The first element corresponds
* to the text display for false, the second element for true. Defaults to <code>array('No', 'Yes')</code>.
*/
public $booleanFormat=array('No','Yes');
/**
* @var array the options to be passed to CHtmlPurifier instance used in this class. CHtmlPurifier is used
* in {@link formatHtml} method, so this property could be useful to customize HTML filtering behavior.
* @since 1.1.13
*/
public $htmlPurifierOptions=array();
/**
* @var array the format used to format size (bytes). Three elements may be specified: "base", "decimals" and "decimalSeparator".
* They correspond to the base at which a kilobyte is calculated (1000 or 1024 bytes per kilobyte, defaults to 1024),
* the number of digits after the decimal point (defaults to 2) and the character displayed as the decimal point.
* "decimalSeparator" is available since version 1.1.13
* @since 1.1.11
*/
public $sizeFormat=array(
'base'=>1024,
'decimals'=>2,
'decimalSeparator'=>null,
);
/**
* Calls the format method when its shortcut is invoked.
* This is a PHP magic method that we override to implement the shortcut format methods.
* @param string $name the method name
* @param array $parameters method parameters
* @return mixed the method return value
*/
public function __call($name,$parameters)
{
if(method_exists($this,'format'.$name))
return call_user_func_array(array($this,'format'.$name),$parameters);
else
return parent::__call($name,$parameters);
}
/**
* Formats a value based on the given type.
* @param mixed $value the value to be formatted
* @param string $type the data type. This must correspond to a format method available in CFormatter.
* For example, we can use 'text' here because there is method named {@link formatText}.
* @throws CException if given type is unknown
* @return string the formatted data
*/
public function format($value,$type)
{
$method='format'.$type;
if(method_exists($this,$method))
return $this->$method($value);
else
throw new CException(Yii::t('yii','Unknown type "{type}".',array('{type}'=>$type)));
}
/**
* Formats the value as is without any formatting.
* This method simply returns back the parameter without any format.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatRaw($value)
{
return $value;
}
/**
* Formats the value as a HTML-encoded plain text.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatText($value)
{
return CHtml::encode($value);
}
/**
* Formats the value as a HTML-encoded plain text and converts newlines with HTML <br /> or
* <p></p> tags.
* @param mixed $value the value to be formatted
* @param boolean $paragraphs whether newlines should be converted to HTML <p></p> tags,
* false by default meaning that HTML <br /> tags will be used
* @param boolean $removeEmptyParagraphs whether empty paragraphs should be removed, defaults to true;
* makes sense only when $paragraphs parameter is true
* @return string the formatted result
*/
public function formatNtext($value,$paragraphs=false,$removeEmptyParagraphs=true)
{
$value=CHtml::encode($value);
if($paragraphs)
{
$value='<p>'.str_replace(array("\r\n", "\n", "\r"), '</p><p>',$value).'</p>';
if($removeEmptyParagraphs)
$value=preg_replace('/(<\/p><p>){2,}/i','</p><p>',$value);
return $value;
}
else
{
return nl2br($value);
}
}
/**
* Formats the value as HTML text without any encoding.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatHtml($value)
{
return $this->getHtmlPurifier()->purify($value);
}
/**
* Formats the value as a date.
* @param mixed $value the value to be formatted
* @return string the formatted result
* @see dateFormat
*/
public function formatDate($value)
{
return date($this->dateFormat,$this->normalizeDateValue($value));
}
/**
* Formats the value as a time.
* @param mixed $value the value to be formatted
* @return string the formatted result
* @see timeFormat
*/
public function formatTime($value)
{
return date($this->timeFormat,$this->normalizeDateValue($value));
}
/**
* Formats the value as a date and time.
* @param mixed $value the value to be formatted
* @return string the formatted result
* @see datetimeFormat
*/
public function formatDatetime($value)
{
return date($this->datetimeFormat,$this->normalizeDateValue($value));
}
/**
* Normalizes an expression as a timestamp.
* @param mixed $time the time expression to be normalized
* @return int the normalized result as a UNIX timestamp
*/
protected function normalizeDateValue($time)
{
if(is_string($time))
{
if(ctype_digit($time) || ($time{0}=='-' && ctype_digit(substr($time, 1))))
return (int)$time;
else
return strtotime($time);
}
elseif (class_exists('DateTime', false) && $time instanceof DateTime)
return $time->getTimestamp();
else
return (int)$time;
}
/**
* Formats the value as a boolean.
* @param mixed $value the value to be formatted
* @return string the formatted result
* @see booleanFormat
*/
public function formatBoolean($value)
{
return $value ? $this->booleanFormat[1] : $this->booleanFormat[0];
}
/**
* Formats the value as a mailto link.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatEmail($value)
{
return CHtml::mailto($value);
}
/**
* Formats the value as an image tag.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatImage($value)
{
return CHtml::image($value);
}
/**
* Formats the value as a hyperlink.
* @param mixed $value the value to be formatted
* @return string the formatted result
*/
public function formatUrl($value)
{
$url=$value;
if(strpos($url,'http://')!==0 && strpos($url,'https://')!==0)
$url='http://'.$url;
return CHtml::link(CHtml::encode($value),$url);
}
/**
* Formats the value as a number using PHP number_format() function.
* @param mixed $value the value to be formatted
* @return string the formatted result
* @see numberFormat
*/
public function formatNumber($value)
{
return number_format($value,$this->numberFormat['decimals'],$this->numberFormat['decimalSeparator'],$this->numberFormat['thousandSeparator']);
}
/**
* @return CHtmlPurifier the HTML purifier instance
*/
public function getHtmlPurifier()
{
if($this->_htmlPurifier===null)
$this->_htmlPurifier=new CHtmlPurifier;
$this->_htmlPurifier->options=$this->htmlPurifierOptions;
return $this->_htmlPurifier;
}
/**
* Formats the value in bytes as a size in human readable form.
* @param integer $value value in bytes to be formatted
* @param boolean $verbose if full names should be used (e.g. bytes, kilobytes, ...).
* Defaults to false meaning that short names will be used (e.g. B, KB, ...).
* @return string the formatted result
* @see sizeFormat
* @since 1.1.11
*/
public function formatSize($value,$verbose=false)
{
$base=$this->sizeFormat['base'];
for($i=0; $base<=$value && $i<5; $i++)
$value=$value/$base;
$value=round($value, $this->sizeFormat['decimals']);
$formattedValue=isset($this->sizeFormat['decimalSeparator']) ? str_replace('.',$this->sizeFormat['decimalSeparator'],$value) : $value;
$params=array($value,'{n}'=>$formattedValue);
switch($i)
{
case 0:
return $verbose ? Yii::t('yii','{n} byte|{n} bytes',$params) : Yii::t('yii', '{n} B',$params);
case 1:
return $verbose ? Yii::t('yii','{n} kilobyte|{n} kilobytes',$params) : Yii::t('yii','{n} KB',$params);
case 2:
return $verbose ? Yii::t('yii','{n} megabyte|{n} megabytes',$params) : Yii::t('yii','{n} MB',$params);
case 3:
return $verbose ? Yii::t('yii','{n} gigabyte|{n} gigabytes',$params) : Yii::t('yii','{n} GB',$params);
default:
return $verbose ? Yii::t('yii','{n} terabyte|{n} terabytes',$params) : Yii::t('yii','{n} TB',$params);
}
}
}