<?php
/**
* This file is part of the CodeIgniter 4 framework.
*
* (c) CodeIgniter Foundation <admin@codeigniter.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
use CodeIgniter\Files\Exceptions\FileNotFoundException;
use Config\DocTypes;
use Config\Mimes;
// --------------------------------------------------------------------
/**
* CodeIgniter HTML Helpers
*/
if (! function_exists('ul'))
{
/**
* Unordered List
*
* Generates an HTML unordered list from an single or
* multi-dimensional array.
*
* @param array $list
* @param mixed $attributes HTML attributes string, array, object
*
* @return string
*/
function ul(array $list, $attributes = ''): string
{
return _list('ul', $list, $attributes);
}
}
// ------------------------------------------------------------------------
if (! function_exists('ol'))
{
/**
* Ordered List
*
* Generates an HTML ordered list from an single or multi-dimensional array.
*
* @param array $list
* @param mixed $attributes HTML attributes string, array, object
*
* @return string
*/
function ol(array $list, $attributes = ''): string
{
return _list('ol', $list, $attributes);
}
}
// ------------------------------------------------------------------------
if (! function_exists('_list'))
{
/**
* Generates the list
*
* Generates an HTML ordered list from an single or multi-dimensional array.
*
* @param string $type
* @param mixed $list
* @param mixed $attributes string, array, object
* @param integer $depth
*
* @return string
*/
function _list(string $type = 'ul', $list = [], $attributes = '', int $depth = 0): string
{
// Set the indentation based on the depth
$out = str_repeat(' ', $depth)
// Write the opening list tag
. '<' . $type . stringify_attributes($attributes) . ">\n";
// Cycle through the list elements. If an array is
// encountered we will recursively call _list()
static $_last_list_item = '';
foreach ($list as $key => $val)
{
$_last_list_item = $key;
$out .= str_repeat(' ', $depth + 2) . '<li>';
if (! is_array($val))
{
$out .= $val;
}
else
{
$out .= $_last_list_item
. "\n"
. _list($type, $val, '', $depth + 4)
. str_repeat(' ', $depth + 2);
}
$out .= "</li>\n";
}
// Set the indentation for the closing tag and apply it
return $out . str_repeat(' ', $depth) . '</' . $type . ">\n";
}
}
// ------------------------------------------------------------------------
if (! function_exists('img'))
{
/**
* Image
*
* Generates an image element
*
* @param string|array $src Image source URI, or array of attributes and values
* @param boolean $indexPage Whether to treat $src as a routed URI string
* @param string|array|object $attributes Additional HTML attributes
*
* @return string
*/
function img($src = '', bool $indexPage = false, $attributes = ''): string
{
if (! is_array($src))
{
$src = ['src' => $src];
}
if (! isset($src['src']))
{
$src['src'] = $attributes['src'] ?? '';
}
if (! isset($src['alt']))
{
$src['alt'] = $attributes['alt'] ?? '';
}
$img = '<img';
// Check for a relative URI
if (! preg_match('#^([a-z]+:)?//#i', $src['src']) && strpos($src['src'], 'data:') !== 0)
{
if ($indexPage === true)
{
$img .= ' src="' . site_url($src['src']) . '"';
}
else
{
$img .= ' src="' . slash_item('baseURL') . $src['src'] . '"';
}
unset($src['src']);
}
// Append any other values
foreach ($src as $key => $value)
{
$img .= ' ' . $key . '="' . $value . '"';
}
// Prevent passing completed values to stringify_attributes
if (is_array($attributes))
{
unset($attributes['alt'], $attributes['src']);
}
return $img . stringify_attributes($attributes) . ' />';
}
}
if (! function_exists('img_data'))
{
/**
* Image (data)
*
* Generates a src-ready string from an image using the "data:" protocol
*
* @param string $path Image source path
* @param string|null $mime MIME type to use, or null to guess
*
* @return string
*/
function img_data(string $path, string $mime = null): string
{
if (! is_file($path) || ! is_readable($path))
{
throw FileNotFoundException::forFileNotFound($path);
}
// Read in file binary data
$handle = fopen($path, 'rb');
$data = fread($handle, filesize($path));
fclose($handle);
// Encode as base64
$data = base64_encode($data);
// Figure out the type (Hail Mary to JPEG)
$mime = $mime ?? Mimes::guessTypeFromExtension(pathinfo($path, PATHINFO_EXTENSION)) ?? 'image/jpg';
return 'data:' . $mime . ';base64,' . $data;
}
}
// ------------------------------------------------------------------------
if (! function_exists('doctype'))
{
/**
* Doctype
*
* Generates a page document type declaration
*
* Examples of valid options: html5, xhtml-11, xhtml-strict, xhtml-trans,
* xhtml-frame, html4-strict, html4-trans, and html4-frame.
* All values are saved in the doctypes config file.
*
* @param string $type The doctype to be generated
*
* @return string
*/
function doctype(string $type = 'html5'): string
{
$config = new DocTypes();
$doctypes = $config->list;
return $doctypes[$type] ?? false;
}
}
// ------------------------------------------------------------------------
if (! function_exists('script_tag'))
{
/**
* Script
*
* Generates link to a JS file
*
* @param mixed $src Script source or an array
* @param boolean $indexPage Should indexPage be added to the JS path
*
* @return string
*/
function script_tag($src = '', bool $indexPage = false): string
{
$script = '<script ';
if (! is_array($src))
{
$src = ['src' => $src];
}
foreach ($src as $k => $v)
{
if ($k === 'src' && ! preg_match('#^([a-z]+:)?//#i', $v))
{
if ($indexPage === true)
{
$script .= 'src="' . site_url($v) . '" ';
}
else
{
$script .= 'src="' . slash_item('baseURL') . $v . '" ';
}
}
else
{
$script .= $k . '="' . $v . '" ';
}
}
return $script . 'type="text/javascript"' . '></script>';
}
}
// ------------------------------------------------------------------------
if (! function_exists('link_tag'))
{
/**
* Link
*
* Generates link to a CSS file
*
* @param mixed $href Stylesheet href or an array
* @param string $rel
* @param string $type
* @param string $title
* @param string $media
* @param boolean $indexPage should indexPage be added to the CSS path.
* @param string $hreflang
*
* @return string
*/
function link_tag($href = '', string $rel = 'stylesheet', string $type = 'text/css', string $title = '', string $media = '', bool $indexPage = false, string $hreflang = ''): string
{
$link = '<link ';
// extract fields if needed
if (is_array($href))
{
$rel = $href['rel'] ?? $rel;
$type = $href['type'] ?? $type;
$title = $href['title'] ?? $title;
$media = $href['media'] ?? $media;
$hreflang = $href['hreflang'] ?? '';
$indexPage = $href['indexPage'] ?? $indexPage;
$href = $href['href'] ?? '';
}
if (! preg_match('#^([a-z]+:)?//#i', $href))
{
if ($indexPage === true)
{
$link .= 'href="' . site_url($href) . '" ';
}
else
{
$link .= 'href="' . slash_item('baseURL') . $href . '" ';
}
}
else
{
$link .= 'href="' . $href . '" ';
}
if ($hreflang !== '')
{
$link .= 'hreflang="' . $hreflang . '" ';
}
$link .= 'rel="' . $rel . '" ';
if (! in_array($rel, ['alternate', 'canonical'], true))
{
$link .= 'type="' . $type . '" ';
}
if ($media !== '')
{
$link .= 'media="' . $media . '" ';
}
if ($title !== '')
{
$link .= 'title="' . $title . '" ';
}
return $link . '/>';
}
}
// ------------------------------------------------------------------------
if (! function_exists('video'))
{
/**
* Video
*
* Generates a video element to embed videos. The video element can
* contain one or more video sources
*
* @param mixed $src Either a source string or an array of sources
* @param string $unsupportedMessage The message to display if the media tag is not supported by the browser
* @param string $attributes HTML attributes
* @param array $tracks
* @param boolean $indexPage
*
* @return string
*/
function video($src, string $unsupportedMessage = '', string $attributes = '', array $tracks = [], bool $indexPage = false): string
{
if (is_array($src))
{
return _media('video', $src, $unsupportedMessage, $attributes, $tracks);
}
$video = '<video';
if (_has_protocol($src))
{
$video .= ' src="' . $src . '"';
}
elseif ($indexPage === true)
{
$video .= ' src="' . site_url($src) . '"';
}
else
{
$video .= ' src="' . slash_item('baseURL') . $src . '"';
}
if ($attributes !== '')
{
$video .= ' ' . $attributes;
}
$video .= ">\n";
if (! empty($tracks))
{
foreach ($tracks as $track)
{
$video .= _space_indent() . $track . "\n";
}
}
if (! empty($unsupportedMessage))
{
$video .= _space_indent()
. $unsupportedMessage
. "\n";
}
return $video . "</video>\n";
}
}
// ------------------------------------------------------------------------
if (! function_exists('audio'))
{
/**
* Audio
*
* Generates an audio element to embed sounds
*
* @param mixed $src Either a source string or an array of sources
* @param string $unsupportedMessage The message to display if the media tag is not supported by the browser.
* @param string $attributes HTML attributes
* @param array $tracks
* @param boolean $indexPage
*
* @return string
*/
function audio($src, string $unsupportedMessage = '', string $attributes = '', array $tracks = [], bool $indexPage = false): string
{
if (is_array($src))
{
return _media('audio', $src, $unsupportedMessage, $attributes, $tracks);
}
$audio = '<audio';
if (_has_protocol($src))
{
$audio .= ' src="' . $src . '"';
}
elseif ($indexPage === true)
{
$audio .= ' src="' . site_url($src) . '"';
}
else
{
$audio .= ' src="' . slash_item('baseURL') . $src . '"';
}
if ($attributes !== '')
{
$audio .= ' ' . $attributes;
}
$audio .= '>';
if (! empty($tracks))
{
foreach ($tracks as $track)
{
$audio .= "\n" . _space_indent() . $track;
}
}
if (! empty($unsupportedMessage))
{
$audio .= "\n" . _space_indent() . $unsupportedMessage . "\n";
}
return $audio . "</audio>\n";
}
}
// ------------------------------------------------------------------------
if (! function_exists('_media'))
{
/**
* Generate media based tag
*
* @param string $name
* @param array $types
* @param string $unsupportedMessage The message to display if the media tag is not supported by the browser.
* @param string $attributes
* @param array $tracks
*
* @return string
*/
function _media(string $name, array $types = [], string $unsupportedMessage = '', string $attributes = '', array $tracks = []): string
{
$media = '<' . $name;
if (empty($attributes))
{
$media .= '>';
}
else
{
$media .= ' ' . $attributes . '>';
}
$media .= "\n";
foreach ($types as $option)
{
$media .= _space_indent() . $option . "\n";
}
if (! empty($tracks))
{
foreach ($tracks as $track)
{
$media .= _space_indent() . $track . "\n";
}
}
if (! empty($unsupportedMessage))
{
$media .= _space_indent() . $unsupportedMessage . "\n";
}
return $media . ('</' . $name . ">\n");
}
}
// ------------------------------------------------------------------------
if (! function_exists('source'))
{
/**
* Source
*
* Generates a source element that specifies multiple media resources
* for either audio or video element
*
* @param string $src The path of the media resource
* @param string $type The MIME-type of the resource with optional codecs parameters
* @param string $attributes HTML attributes
* @param boolean $indexPage
*
* @return string
*/
function source(string $src, string $type = 'unknown', string $attributes = '', bool $indexPage = false): string
{
if (! _has_protocol($src))
{
if ($indexPage === true)
{
$src = site_url($src);
}
else
{
$src = slash_item('baseURL') . $src;
}
}
$source = '<source src="' . $src
. '" type="' . $type . '"';
if (! empty($attributes))
{
$source .= ' ' . $attributes;
}
return $source . ' />';
}
}
// ------------------------------------------------------------------------
if (! function_exists('track'))
{
/**
* Track
*
* Generates a track element to specify timed tracks. The tracks are
* formatted in WebVTT format.
*
* @param string $src The path of the .VTT file
* @param string $kind
* @param string $srcLanguage
* @param string $label
*
* @return string
*/
function track(string $src, string $kind, string $srcLanguage, string $label): string
{
return '<track src="' . $src
. '" kind="' . $kind
. '" srclang="' . $srcLanguage
. '" label="' . $label
. '" />';
}
}
// ------------------------------------------------------------------------
if (! function_exists('object'))
{
/**
* Object
*
* Generates an object element that represents the media
* as either image or a resource plugin such as audio, video,
* Java applets, ActiveX, PDF and Flash
*
* @param string $data A resource URL
* @param string $type Content-type of the resource
* @param string $attributes HTML attributes
* @param array $params
* @param boolean $indexPage
*
* @return string
*/
function object(string $data, string $type = 'unknown', string $attributes = '', array $params = [], bool $indexPage = false): string
{
if (! _has_protocol($data))
{
if ($indexPage === true)
{
$data = site_url($data);
}
else
{
$data = slash_item('baseURL') . $data;
}
}
$object = '<object data="' . $data . '" '
. $attributes . '>';
if (! empty($params))
{
$object .= "\n";
}
foreach ($params as $param)
{
$object .= _space_indent() . $param . "\n";
}
return $object . "</object>\n";
}
}
// ------------------------------------------------------------------------
if (! function_exists('param'))
{
/**
* Param
*
* Generates a param element that defines parameters
* for the object element.
*
* @param string $name The name of the parameter
* @param string $value The value of the parameter
* @param string $type The MIME-type
* @param string $attributes HTML attributes
*
* @return string
*/
function param(string $name, string $value, string $type = 'ref', string $attributes = ''): string
{
return '<param name="' . $name
. '" type="' . $type
. '" value="' . $value
. '" ' . $attributes . ' />';
}
}
// ------------------------------------------------------------------------
if (! function_exists('embed'))
{
/**
* Embed
*
* Generates an embed element
*
* @param string $src The path of the resource to embed
* @param string $type MIME-type
* @param string $attributes HTML attributes
* @param boolean $indexPage
*
* @return string
*/
function embed(string $src, string $type = 'unknown', string $attributes = '', bool $indexPage = false): string
{
if (! _has_protocol($src))
{
if ($indexPage === true)
{
$src = site_url($src);
}
else
{
$src = slash_item('baseURL') . $src;
}
}
return '<embed src="' . $src
. '" type="' . $type . '" '
. $attributes . " />\n";
}
}
// ------------------------------------------------------------------------
if (! function_exists('_has_protocol'))
{
/**
* Test the protocol of a URI.
*
* @param string $url
*
* @return false|integer
*/
function _has_protocol(string $url)
{
return preg_match('#^([a-z]+:)?//#i', $url);
}
}
// ------------------------------------------------------------------------
if (! function_exists('_space_indent'))
{
/**
* Provide space indenting.
*
* @param integer $depth
*
* @return string
*/
function _space_indent(int $depth = 2): string
{
return str_repeat(' ', $depth);
}
}
// ------------------------------------------------------------------------
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