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lichterei-web/kirby/config/helpers.php
Bastian Allgeier 8070893b64 RC6
2019-01-14 10:52:45 +01:00

766 lines
17 KiB
PHP
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<?php
use Kirby\Cms\App;
use Kirby\Cms\Html;
use Kirby\Cms\Response;
use Kirby\Cms\Url;
use Kirby\Exception\Exception;
use Kirby\Http\Server;
use Kirby\Toolkit\Escape;
use Kirby\Toolkit\F;
use Kirby\Toolkit\I18n;
use Kirby\Toolkit\View;
/**
* Generates a list of HTML attributes
*
* @param array $attr A list of attributes as key/value array
* @param string $before An optional string that will be prepended if the result is not empty
* @param string $after An optional string that will be appended if the result is not empty
* @return string
*/
function attr(array $attr = null, $before = null, $after = null)
{
if ($attrs = Html::attr($attr)) {
return $before . $attrs . $after;
}
return null;
}
/**
* Returns the result of a collection by name
*
* @param string $name
* @return Collection|null
*/
function collection(string $name)
{
return App::instance()->collection($name);
}
/**
* Checks / returns a CSRF token
*
* @param string $check Pass a token here to compare it to the one in the session
* @return string|boolean Either the token or a boolean check result
*/
function csrf(string $check = null)
{
$session = App::instance()->session();
// check explicitly if there have been no arguments at all;
// checking for null introduces a security issue because null could come
// from user input or bugs in the calling code!
if (func_num_args() === 0) {
// no arguments, generate/return a token
$token = $session->get('csrf');
if (is_string($token) !== true) {
$token = bin2hex(random_bytes(32));
$session->set('csrf', $token);
}
return $token;
} elseif (is_string($check) === true && is_string($session->get('csrf')) === true) {
// argument has been passed, check the token
return hash_equals($session->get('csrf'), $check) === true;
}
return false;
}
/**
* Creates one or multiple CSS link tags
*
* @param string|array $url Relative or absolute URLs, an array of URLs or `@auto` for automatic template css loading
* @param string|array $options Pass an array of attributes for the link tag or a media attribute string
* @return string|null
*/
function css($url, $options = null)
{
if (is_array($url) === true) {
$links = array_map(function ($url) use ($options) {
return css($url, $options);
}, $url);
return implode(PHP_EOL, $links);
}
if (is_string($options) === true) {
$options = ['media' => $options];
}
$kirby = App::instance();
if ($component = $kirby->component('css')) {
$url = $component($kirby, $url, $options);
}
$url = $url === '@auto' ? Url::toTemplateAsset('css/templates', 'css') : Url::to($url);
$attr = array_merge((array)$options, [
'href' => $url,
'rel' => 'stylesheet'
]);
return '<link ' . attr($attr) . '>';
}
/**
* Simple object and variable dumper
* to help with debugging.
*
* @param mixed $variable
* @param boolean $echo
* @return string
*/
function dump($variable, bool $echo = true): string
{
if (Server::cli() === true) {
$output = print_r($variable, true) . PHP_EOL;
} else {
$output = '<pre>' . print_r($variable, true) . '</pre>';
}
if ($echo === true) {
echo $output;
}
return $output;
}
/**
* Smart version of echo with an if condition as first argument
*
* @param mixed $condition
* @param mixed $value The string to be echoed if the condition is true
* @param mixed $alternative An alternative string which should be echoed when the condition is false
*/
function e($condition, $value, $alternative = null)
{
echo r($condition, $value, $alternative);
}
/**
* Escape context specific output
*
* @param string $string Untrusted data
* @param string $context Location of output
* @param boolean $strict Whether to escape an extended set of characters (HTML attributes only)
* @return string Escaped data
*/
function esc($string, $context = 'html', $strict = false)
{
if (method_exists('Kirby\Toolkit\Escape', $context) === true) {
return Escape::$context($string, $strict);
}
return $string;
}
/**
* Shortcut for $kirby->request()->get()
*
* @param mixed $key The key to look for. Pass false or null to return the entire request array.
* @param mixed $default Optional default value, which should be returned if no element has been found
* @return mixed
*/
function get($key = null, $default = null)
{
return App::instance()->request()->get($key, $default);
}
/**
* Embeds a Github Gist
*
* @param string $url
* @param string $file
* @return string
*/
function gist(string $url, string $file = null): string
{
return kirbytag([
'gist' => $url,
'file' => $file,
]);
}
/**
* Redirects to the given Urls
* Urls can be relative or absolute.
*
* @param string $url
* @param integer $code
* @return void
*/
function go(string $url = null, int $code = 302)
{
die(Response::redirect($url, $code));
}
/**
* Shortcut for html()
*
* @param string $text unencoded text
* @param bool $keepTags
* @return string
*/
function h(string $string = null, bool $keepTags = false)
{
return Html::encode($string, $keepTags);
}
/**
* Creates safe html by encoding special characters
*
* @param string $text unencoded text
* @param bool $keepTags
* @return string
*/
function html(string $string = null, bool $keepTags = false)
{
return Html::encode($string, $keepTags);
}
/**
* Return an image from any page
* specified by the path
*
* Example:
* <?= image('some/page/myimage.jpg') ?>
*
* @param string $path
* @return File|null
*/
function image(string $path = null)
{
if ($path === null) {
return page()->image();
}
$uri = dirname($path);
$filename = basename($path);
if ($uri === '.') {
$uri = null;
}
$page = $uri === '/' ? site() : page($uri);
if ($page) {
return $page->image($filename);
} else {
return null;
}
}
/**
* Runs a number of validators on a set of data and checks if the data is invalid
*
* @param array $data
* @param array $rules
* @param array $messages
* @return false|array
*/
function invalid(array $data = [], array $rules = [], array $messages = [])
{
$errors = [];
foreach ($rules as $field => $validations) {
$validationIndex = -1;
// See: http://php.net/manual/en/types.comparisons.php
// only false for: null, undefined variable, '', []
$filled = isset($data[$field]) && $data[$field] !== '' && $data[$field] !== [];
$message = $messages[$field] ?? $field;
// True if there is an error message for each validation method.
$messageArray = is_array($message);
foreach ($validations as $method => $options) {
if (is_numeric($method) === true) {
$method = $options;
}
$validationIndex++;
if ($method === 'required') {
if ($filled) {
// Field is required and filled.
continue;
}
} elseif ($filled) {
if (is_array($options) === false) {
$options = [$options];
}
array_unshift($options, $data[$field] ?? null);
if (V::$method(...$options) === true) {
// Field is filled and passes validation method.
continue;
}
} else {
// If a field is not required and not filled, no validation should be done.
continue;
}
// If no continue was called we have a failed validation.
if ($messageArray) {
$errors[$field][] = $message[$validationIndex] ?? $field;
} else {
$errors[$field] = $message;
}
}
}
return $errors;
}
/**
* Creates a script tag to load a javascript file
*
* @param string|array $src
* @param string|array $options
* @return void
*/
function js($url, $options = null)
{
if (is_array($url) === true) {
$scripts = array_map(function ($url) use ($options) {
return js($url, $options);
}, $url);
return implode(PHP_EOL, $scripts);
}
if (is_bool($options) === true) {
$options = ['async' => $options];
}
$kirby = App::instance();
if ($component = $kirby->component('js')) {
$url = $component($kirby, $url, $options);
}
$url = $url === '@auto' ? Url::toTemplateAsset('js/templates', 'js') : Url::to($url);
$attr = array_merge((array)$options, ['src' => $url]);
return '<script ' . attr($attr) . '></script>';
}
/**
* Returns the Kirby object in any situation
*
* @return App
*/
function kirby(): App
{
return App::instance();
}
/**
* Makes it possible to use any defined Kirbytag as standalone function
*
* @param string|array $type
* @param string $value
* @param array $attr
* @return string
*/
function kirbytag($type, string $value = null, array $attr = []): string
{
if (is_array($type) === true) {
return App::instance()->kirbytag(key($type), current($type), $type);
}
return App::instance()->kirbytag($type, $value, $attr);
}
/**
* Parses KirbyTags in the given string. Shortcut
* for `$kirby->kirbytags($text, $data)`
*
* @param string $text
* @param array $data
* @return string
*/
function kirbytags(string $text = null, array $data = []): string
{
return App::instance()->kirbytags($text, $data);
}
/**
* Parses KirbyTags and Markdown in the
* given string. Shortcut for `$kirby->kirbytext()`
*
* @param string $text
* @param array $data
* @return string
*/
function kirbytext(string $text = null, array $data = []): string
{
return App::instance()->kirbytext($text, $data);
}
/**
* A super simple class autoloader
*
* @param array $classmap
* @param string $base
* @return void
*/
function load(array $classmap, string $base = null)
{
spl_autoload_register(function ($class) use ($classmap, $base) {
$class = strtolower($class);
if (!isset($classmap[$class])) {
return false;
}
if ($base) {
include $base . '/' . $classmap[$class];
} else {
include $classmap[$class];
}
});
}
/**
* Parses markdown in the given string. Shortcut for
* `$kirby->markdown($text)`
*
* @param string $text
* @return string
*/
function markdown(string $text = null): string
{
return App::instance()->markdown($text);
}
/**
* Shortcut for `$kirby->option($key, $default)`
*
* @param string $key
* @param mixed $default
* @return mixed
*/
function option(string $key, $default = null)
{
return App::instance()->option($key, $default);
}
/**
* Fetches a single page or multiple pages by
* id or the current page when no id is specified
*
* @param string|array ...$id
* @return Page|null
*/
function page(...$id)
{
if (empty($id) === true) {
return App::instance()->site()->page();
}
return App::instance()->site()->find(...$id);
}
/**
* Helper to build page collections
*
* @param string|array ...$id
* @return Pages
*/
function pages(...$id)
{
return App::instance()->site()->find(...$id);
}
/**
* Returns a single param from the URL
*
* @param string $key
* @param string $fallback
* @return string|null
*/
function param(string $key, string $fallback = null): ?string
{
return App::instance()->request()->url()->params()->$key ?? $fallback;
}
/**
* Returns all params from the current Url
*
* @return array
*/
function params(): array
{
return App::instance()->request()->url()->params()->toArray();
}
/**
* Smart version of return with an if condition as first argument
*
* @param mixed $condition
* @param mixed $value The string to be returned if the condition is true
* @param mixed $alternative An alternative string which should be returned when the condition is false
* @return mixed
*/
function r($condition, $value, $alternative = null)
{
return $condition ? $value : $alternative;
}
/**
* Rounds the minutes of the given date
* by the defined step
*
* @param string $date
* @param integer $step
* @return string|null
*/
function timestamp(string $date = null, int $step = null): ?string
{
if (V::date($date) === false) {
return null;
}
$date = strtotime($date);
if ($step === null) {
return $date;
}
$hours = date('H', $date);
$minutes = date('i', $date);
$minutes = floor($minutes / $step) * $step;
$minutes = str_pad($minutes, 2, 0, STR_PAD_LEFT);
$date = date('Y-m-d', $date) . ' ' . $hours . ':' . $minutes;
return strtotime($date);
}
/**
* Returns the currrent site object
*
* @return Site
*/
function site()
{
return App::instance()->site();
}
/**
* Determines the size/length of numbers, strings, arrays and countable objects
*
* @param mixed $value
* @return int
*/
function size($value): int
{
if (is_numeric($value)) {
return $value;
}
if (is_string($value)) {
return Str::length(trim($value));
}
if (is_array($value)) {
return count($value);
}
if (is_object($value)) {
if (is_a($value, 'Countable') === true) {
return count($value);
}
if (is_a($value, 'Kirby\Toolkit\Collection') === true) {
return $value->count();
}
}
}
/**
* Enhances the given string with
* smartypants. Shortcut for `$kirby->smartypants($text)`
*
* @param string $text
* @return string
*/
function smartypants(string $text = null): string
{
return App::instance()->smartypants($text);
}
/**
* Embeds a snippet from the snippet folder
*
* @param string $name
* @param array|object $data
* @param boolean $return
* @return string
*/
function snippet(string $name, $data = [], bool $return = false)
{
if (is_object($data) === true) {
$data = ['item' => $data];
}
$snippet = App::instance()->snippet($name, $data);
if ($return === true) {
return $snippet;
}
echo $snippet;
}
/**
* Includes an SVG file by absolute or
* relative file path.
*
* @param string $file
* @return string
*/
function svg(string $file)
{
$root = App::instance()->root();
$file = $root . '/' . $file;
if (file_exists($file) === false) {
return false;
}
ob_start();
include F::realpath($file, $root);
$svg = ob_get_contents();
ob_end_clean();
return $svg;
}
/**
* Returns translate string for key from translation file
*
* @param string|array $key
* @param string|null $fallback
* @return mixed
*/
function t($key, string $fallback = null)
{
return I18n::translate($key, $fallback);
}
/**
* Translates a count
*
* @param string|array $key
* @param int $count
* @return mixed
*/
function tc($key, int $count)
{
return I18n::translateCount($key, $count);
}
/**
* Builds a Twitter link
*
* @param string $username
* @param string $text
* @param string $title
* @param string $class
* @return string
*/
function twitter(string $username, string $text = null, string $title = null, string $class = null): string
{
return kirbytag([
'twitter' => $username,
'text' => $text,
'title' => $title,
'class' => $class
]);
}
/**
* Shortcut for url()
*
* @param string $path
* @param array|null $options
* @return string
*/
function u(string $path = null, $options = null): string
{
return Url::to($path, $options);
}
/**
* Builds an absolute URL for a given path
*
* @param string $path
* @param array $options
* @return string
*/
function url(string $path = null, $options = null): string
{
return Url::to($path, $options);
}
/**
* Creates a video embed via iframe for Youtube or Vimeo
* videos. The embed Urls are automatically detected from
* the given Url.
*
* @param string $url
* @param array $options
* @param array $attr
* @return string
*/
function video(string $url, array $options = [], array $attr = []): string
{
return Html::video($url, $options, $attr);
}
/**
* Embeds a Vimeo video by URL in an iframe
*
* @param string $url
* @param array $options
* @param array $attr
* @return string
*/
function vimeo(string $url, array $options = [], array $attr = []): string
{
return Html::video($url, $options, $attr);
}
/**
* The widont function makes sure that there are no
* typographical widows at the end of a paragraph
* that's a single word in the last line
*
* @param string|null $string
* @return string
*/
function widont(string $string = null): string
{
return Str::widont($string);
}
/**
* Embeds a Youtube video by URL in an iframe
*
* @param string $url
* @param array $options
* @param array $attr
* @return string
*/
function youtube(string $url, array $options = [], array $attr = []): string
{
return Html::video($url, $options, $attr);
}