95 lines
1.9 KiB
PHP
95 lines
1.9 KiB
PHP
<?php
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/**
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* Class QRMarkup
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*
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* @created 17.12.2016
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* @author Smiley <smiley@chillerlan.net>
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* @copyright 2016 Smiley
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* @license MIT
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*/
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namespace chillerlan\QRCode\Output;
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use function is_string, preg_match, strip_tags, trim;
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/**
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* Abstract for markup types: HTML, SVG, ... XML anyone?
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*/
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abstract class QRMarkup extends QROutputAbstract{
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/**
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* note: we're not necessarily validating the several values, just checking the general syntax
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* note: css4 colors are not included
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*
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* @todo: XSS proof
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*
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* @see https://developer.mozilla.org/en-US/docs/Web/CSS/color_value
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* @inheritDoc
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*/
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public static function moduleValueIsValid($value):bool{
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if(!is_string($value)){
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return false;
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}
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$value = trim(strip_tags($value), " '\"\r\n\t");
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// hex notation
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// #rgb(a)
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// #rrggbb(aa)
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if(preg_match('/^#([\da-f]{3}){1,2}$|^#([\da-f]{4}){1,2}$/i', $value)){
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return true;
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}
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// css: hsla/rgba(...values)
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if(preg_match('#^(hsla?|rgba?)\([\d .,%/]+\)$#i', $value)){
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return true;
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}
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// predefined css color
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if(preg_match('/^[a-z]+$/i', $value)){
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return true;
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}
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return false;
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}
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/**
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* @inheritDoc
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*/
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protected function prepareModuleValue($value):string{
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return trim(strip_tags($value), " '\"\r\n\t");
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}
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/**
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* @inheritDoc
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*/
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protected function getDefaultModuleValue(bool $isDark):string{
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return ($isDark) ? '#000' : '#fff';
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}
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/**
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* @inheritDoc
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*/
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public function dump(string $file = null):string{
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$data = $this->createMarkup($file !== null);
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$this->saveToFile($data, $file);
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return $data;
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}
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/**
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* returns a string with all css classes for the current element
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*/
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protected function getCssClass(int $M_TYPE = 0):string{
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return $this->options->cssClass;
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}
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/**
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* returns the fully parsed and rendered markup string for the given input
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*/
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abstract protected function createMarkup(bool $saveToFile):string;
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}
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