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<?php
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namespace Lagdo\DbAdmin\Driver\Utils;
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use function str_replace;
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use function preg_replace;
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use function preg_match;
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use function htmlspecialchars;
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10
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class Str
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{
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/**
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* @inheritDoc
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*/
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public function html($string): string
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{
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if(!$string) {
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return '';
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}
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$string = str_replace("\n", '<br>', $string);
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return str_replace("\0", '�', htmlspecialchars($string, ENT_QUOTES, 'utf-8'));
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}
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/**
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* @inheritDoc
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*/
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public function number(string $value): string
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{
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return preg_replace('~[^0-9]+~', '', $value);
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}
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/**
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* @inheritDoc
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*/
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public function isUtf8(string $value): bool
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{
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// don't print control chars except \t\r\n
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return (preg_match('~~u', $value) && !preg_match('~[\0-\x8\xB\xC\xE-\x1F]~', $value));
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}
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/**
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* Create repeat pattern for preg
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*
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* @param string $pattern
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* @param int $length
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*
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* @return string
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*/
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private function repeatPattern(string $pattern, int $length): string
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{
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// fix for Compilation failed: number too big in {} quantifier
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// can create {0,0} which is OK
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return str_repeat("$pattern{0,65535}", $length / 65535) . "$pattern{0," . ($length % 65535) . '}';
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}
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/**
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* Shorten UTF-8 string
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*
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* @param string $string
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* @param int $length
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* @param string $suffix
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*
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* @return string
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*/
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public function shortenUtf8(string $string, int $length = 80, string $suffix = ''): string
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66
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{
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if (!preg_match('(^(' . $this->repeatPattern("[\t\r\n -\x{10FFFF}]", $length) . ')($)?)u', $string, $match)) {
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// ~s causes trash in $match[2] under some PHP versions, (.|\n) is slow
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preg_match('(^(' . $this->repeatPattern("[\t\r\n -~]", $length) . ')($)?)', $string, $match);
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70
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}
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return $this->html($match[1]) . $suffix . (isset($match[2]) ? '' : '<i>…</i>');
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}
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}
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lagdo /
dbadmin-driver
