367 lines
9.0 KiB
PHP
367 lines
9.0 KiB
PHP
<?php defined('SYSPATH') OR die('No direct access allowed.');
|
|
/**
|
|
* HTML helper class.
|
|
*
|
|
* $Id: html.php 4679 2009-11-10 01:45:52Z isaiah $
|
|
*
|
|
* @package Core
|
|
* @author Kohana Team
|
|
* @copyright (c) 2007-2009 Kohana Team
|
|
* @license http://kohanaphp.com/license
|
|
*/
|
|
class html_Core {
|
|
|
|
// Enable or disable automatic setting of target="_blank"
|
|
public static $windowed_urls = FALSE;
|
|
|
|
/**
|
|
* Convert special characters to HTML entities
|
|
*
|
|
* @param string string to convert
|
|
* @param boolean encode existing entities
|
|
* @return string
|
|
*/
|
|
public static function chars($str, $double_encode = TRUE)
|
|
{
|
|
// Return HTML entities using the Kohana charset
|
|
return htmlspecialchars($str, ENT_QUOTES, Kohana::CHARSET, $double_encode);
|
|
}
|
|
|
|
/**
|
|
* Create HTML link anchors.
|
|
*
|
|
* @param string URL or URI string
|
|
* @param string link text
|
|
* @param array HTML anchor attributes
|
|
* @param string non-default protocol, eg: https
|
|
* @param boolean option to escape the title that is output
|
|
* @return string
|
|
*/
|
|
public static function anchor($uri, $title = NULL, $attributes = NULL, $protocol = NULL, $escape_title = FALSE)
|
|
{
|
|
if ($uri === '')
|
|
{
|
|
$site_url = url::base(FALSE);
|
|
}
|
|
elseif (strpos($uri, '#') === 0)
|
|
{
|
|
// This is an id target link, not a URL
|
|
$site_url = $uri;
|
|
}
|
|
elseif (strpos($uri, '://') === FALSE)
|
|
{
|
|
$site_url = url::site($uri, $protocol);
|
|
}
|
|
else
|
|
{
|
|
if (html::$windowed_urls === TRUE AND empty($attributes['target']))
|
|
{
|
|
$attributes['target'] = '_blank';
|
|
}
|
|
|
|
$site_url = $uri;
|
|
}
|
|
|
|
return
|
|
// Parsed URL
|
|
'<a href="'.htmlspecialchars($site_url, ENT_QUOTES, Kohana::CHARSET, FALSE).'"'
|
|
// Attributes empty? Use an empty string
|
|
.(is_array($attributes) ? html::attributes($attributes) : '').'>'
|
|
// Title empty? Use the parsed URL
|
|
.($escape_title ? htmlspecialchars((($title === NULL) ? $site_url : $title), ENT_QUOTES, Kohana::CHARSET, FALSE) : (($title === NULL) ? $site_url : $title)).'</a>';
|
|
}
|
|
|
|
/**
|
|
* Creates an HTML anchor to a file.
|
|
*
|
|
* @param string name of file to link to
|
|
* @param string link text
|
|
* @param array HTML anchor attributes
|
|
* @param string non-default protocol, eg: ftp
|
|
* @return string
|
|
*/
|
|
public static function file_anchor($file, $title = NULL, $attributes = NULL, $protocol = NULL)
|
|
{
|
|
return
|
|
// Base URL + URI = full URL
|
|
'<a href="'.htmlspecialchars(url::base(FALSE, $protocol).$file, ENT_QUOTES, Kohana::CHARSET, FALSE).'"'
|
|
// Attributes empty? Use an empty string
|
|
.(is_array($attributes) ? html::attributes($attributes) : '').'>'
|
|
// Title empty? Use the filename part of the URI
|
|
.(($title === NULL) ? end(explode('/', $file)) : $title) .'</a>';
|
|
}
|
|
|
|
/**
|
|
* Generates an obfuscated version of an email address.
|
|
*
|
|
* @param string email address
|
|
* @return string
|
|
*/
|
|
public static function email($email)
|
|
{
|
|
$safe = '';
|
|
foreach (str_split($email) as $letter)
|
|
{
|
|
switch (($letter === '@') ? rand(1, 2) : rand(1, 3))
|
|
{
|
|
// HTML entity code
|
|
case 1: $safe .= '&#'.ord($letter).';'; break;
|
|
// Hex character code
|
|
case 2: $safe .= '&#x'.dechex(ord($letter)).';'; break;
|
|
// Raw (no) encoding
|
|
case 3: $safe .= $letter;
|
|
}
|
|
}
|
|
|
|
return $safe;
|
|
}
|
|
|
|
/**
|
|
* Creates an email anchor.
|
|
*
|
|
* @param string email address to send to
|
|
* @param string link text
|
|
* @param array HTML anchor attributes
|
|
* @return string
|
|
*/
|
|
public static function mailto($email, $title = NULL, $attributes = NULL)
|
|
{
|
|
if (empty($email))
|
|
return $title;
|
|
|
|
// Remove the subject or other parameters that do not need to be encoded
|
|
if (strpos($email, '?') !== FALSE)
|
|
{
|
|
// Extract the parameters from the email address
|
|
list ($email, $params) = explode('?', $email, 2);
|
|
|
|
// Make the params into a query string, replacing spaces
|
|
$params = '?'.str_replace(' ', '%20', $params);
|
|
}
|
|
else
|
|
{
|
|
// No parameters
|
|
$params = '';
|
|
}
|
|
|
|
// Obfuscate email address
|
|
$safe = html::email($email);
|
|
|
|
// Title defaults to the encoded email address
|
|
empty($title) and $title = $safe;
|
|
|
|
// Parse attributes
|
|
empty($attributes) or $attributes = html::attributes($attributes);
|
|
|
|
// Encoded start of the href="" is a static encoded version of 'mailto:'
|
|
return '<a href="mailto:'.$safe.$params.'"'.$attributes.'>'.$title.'</a>';
|
|
}
|
|
|
|
/**
|
|
* Generate a "breadcrumb" list of anchors representing the URI.
|
|
*
|
|
* @param array segments to use as breadcrumbs, defaults to using Router::$segments
|
|
* @return string
|
|
*/
|
|
public static function breadcrumb($segments = NULL)
|
|
{
|
|
empty($segments) and $segments = Router::$segments;
|
|
|
|
$array = array();
|
|
while ($segment = array_pop($segments))
|
|
{
|
|
$array[] = html::anchor
|
|
(
|
|
// Complete URI for the URL
|
|
implode('/', $segments).'/'.$segment,
|
|
// Title for the current segment
|
|
ucwords(inflector::humanize($segment))
|
|
);
|
|
}
|
|
|
|
// Retrun the array of all the segments
|
|
return array_reverse($array);
|
|
}
|
|
|
|
/**
|
|
* Creates a meta tag.
|
|
*
|
|
* @param string|array tag name, or an array of tags
|
|
* @param string tag "content" value
|
|
* @return string
|
|
*/
|
|
public static function meta($tag, $value = NULL)
|
|
{
|
|
if (is_array($tag))
|
|
{
|
|
$tags = array();
|
|
foreach ($tag as $t => $v)
|
|
{
|
|
// Build each tag and add it to the array
|
|
$tags[] = html::meta($t, $v);
|
|
}
|
|
|
|
// Return all of the tags as a string
|
|
return implode("\n", $tags);
|
|
}
|
|
|
|
// Set the meta attribute value
|
|
$attr = in_array(strtolower($tag), Kohana::config('http.meta_equiv')) ? 'http-equiv' : 'name';
|
|
|
|
return '<meta '.$attr.'="'.$tag.'" content="'.$value.'" />';
|
|
}
|
|
|
|
/**
|
|
* Creates a stylesheet link.
|
|
*
|
|
* @param string|array filename, or array of filenames to match to array of medias
|
|
* @param string|array media type of stylesheet, or array to match filenames
|
|
* @param boolean include the index_page in the link
|
|
* @return string
|
|
*/
|
|
public static function stylesheet($style, $media = FALSE, $index = FALSE)
|
|
{
|
|
return html::link($style, 'stylesheet', 'text/css', $media, $index);
|
|
}
|
|
|
|
/**
|
|
* Creates a link tag.
|
|
*
|
|
* @param string|array filename
|
|
* @param string|array relationship
|
|
* @param string|array mimetype
|
|
* @param string|array specifies on what device the document will be displayed
|
|
* @param boolean include the index_page in the link
|
|
* @return string
|
|
*/
|
|
public static function link($href, $rel, $type, $media = FALSE, $index = FALSE)
|
|
{
|
|
$compiled = '';
|
|
|
|
if (is_array($href))
|
|
{
|
|
foreach ($href as $_href)
|
|
{
|
|
$_rel = is_array($rel) ? array_shift($rel) : $rel;
|
|
$_type = is_array($type) ? array_shift($type) : $type;
|
|
$_media = is_array($media) ? array_shift($media) : $media;
|
|
|
|
$compiled .= html::link($_href, $_rel, $_type, $_media, $index);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (strpos($href, '://') === FALSE)
|
|
{
|
|
// Make the URL absolute
|
|
$href = url::base($index).$href;
|
|
}
|
|
|
|
$attr = array
|
|
(
|
|
'rel' => $rel,
|
|
'type' => $type,
|
|
'href' => $href,
|
|
);
|
|
|
|
if ( ! empty($media))
|
|
{
|
|
// Add the media type to the attributes
|
|
$attr['media'] = $media;
|
|
}
|
|
|
|
$compiled = '<link'.html::attributes($attr).' />';
|
|
}
|
|
|
|
return $compiled."\n";
|
|
}
|
|
|
|
/**
|
|
* Creates a script link.
|
|
*
|
|
* @param string|array filename
|
|
* @param boolean include the index_page in the link
|
|
* @return string
|
|
*/
|
|
public static function script($script, $index = FALSE)
|
|
{
|
|
$compiled = '';
|
|
|
|
if (is_array($script))
|
|
{
|
|
foreach ($script as $name)
|
|
{
|
|
$compiled .= html::script($name, $index);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (strpos($script, '://') === FALSE)
|
|
{
|
|
// Add the suffix only when it's not already present
|
|
$script = url::base((bool) $index).$script;
|
|
}
|
|
|
|
$compiled = '<script type="text/javascript" src="'.$script.'"></script>';
|
|
}
|
|
|
|
return $compiled."\n";
|
|
}
|
|
|
|
/**
|
|
* Creates a image link.
|
|
*
|
|
* @param string image source, or an array of attributes
|
|
* @param string|array image alt attribute, or an array of attributes
|
|
* @param boolean include the index_page in the link
|
|
* @return string
|
|
*/
|
|
public static function image($src = NULL, $alt = NULL, $index = FALSE)
|
|
{
|
|
// Create attribute list
|
|
$attributes = is_array($src) ? $src : array('src' => $src);
|
|
|
|
if (is_array($alt))
|
|
{
|
|
$attributes += $alt;
|
|
}
|
|
elseif ( ! empty($alt))
|
|
{
|
|
// Add alt to attributes
|
|
$attributes['alt'] = $alt;
|
|
}
|
|
|
|
if (strpos($attributes['src'], '://') === FALSE)
|
|
{
|
|
// Make the src attribute into an absolute URL
|
|
$attributes['src'] = url::base($index).$attributes['src'];
|
|
}
|
|
|
|
return '<img'.html::attributes($attributes).' />';
|
|
}
|
|
|
|
/**
|
|
* Compiles an array of HTML attributes into an attribute string.
|
|
*
|
|
* @param string|array array of attributes
|
|
* @return string
|
|
*/
|
|
public static function attributes($attrs)
|
|
{
|
|
if (empty($attrs))
|
|
return '';
|
|
|
|
if (is_string($attrs))
|
|
return ' '.$attrs;
|
|
|
|
$compiled = '';
|
|
foreach ($attrs as $key => $val)
|
|
{
|
|
$compiled .= ' '.$key.'="'.htmlspecialchars($val, ENT_QUOTES, Kohana::CHARSET).'"';
|
|
}
|
|
|
|
return $compiled;
|
|
}
|
|
|
|
} // End html
|