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<?php |
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namespace Lagdo\DbAdmin\Db\Traits; |
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use Lagdo\DbAdmin\Driver\Entity\TableFieldEntity; |
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trait UtilTrait |
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{ |
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/** |
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* Escape for HTML |
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* |
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* @param string|null $string |
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* |
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* @return string |
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*/ |
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abstract public function html($string): string; |
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/** |
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* Get escaped error message |
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* |
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* @return string |
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*/ |
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public function error(): string |
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{ |
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return $this->html($this->driver->error()); |
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} |
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/** |
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* Check if the string is e-mail address |
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* |
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* @param mixed $email |
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* |
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* @return bool |
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*/ |
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public function isMail($email): bool |
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{ |
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if (!\is_string($email)) { |
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return false; |
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} |
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$atom = '[-a-z0-9!#$%&\'*+/=?^_`{|}~]'; // characters of local-name |
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$domain = '[a-z0-9]([-a-z0-9]{0,61}[a-z0-9])'; // one domain component |
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$pattern = "$atom+(\\.$atom+)*@($domain?\\.)+$domain"; |
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return \preg_match("(^$pattern(,\\s*$pattern)*\$)i", $email) > 0; |
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} |
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/** |
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* Check if the string is URL address |
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* |
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* @param mixed $string |
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* |
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* @return bool |
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*/ |
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public function isUrl($string): bool |
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{ |
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$domain = '[a-z0-9]([-a-z0-9]{0,61}[a-z0-9])'; // one domain component //! IDN |
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//! restrict path, query and fragment characters |
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return \preg_match("~^(https?)://($domain?\\.)+$domain(:\\d+)?(/.*)?(\\?.*)?(#.*)?\$~i", $string) > 0; |
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} |
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/** |
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* Check if field should be shortened |
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* |
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* @param TableFieldEntity $field |
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* |
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* @return bool |
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*/ |
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public function isShortable(TableFieldEntity $field): bool |
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{ |
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return \preg_match('~char|text|json|lob|geometry|point|linestring|polygon|string|bytea~', $field->type) > 0; |
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} |
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/** |
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* Get INI boolean value |
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* |
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* @param string $ini |
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* |
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* @return bool |
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*/ |
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public function iniBool(string $ini): bool |
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{ |
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$value = \ini_get($ini); |
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return (\preg_match('~^(on|true|yes)$~i', $value) || (int) $value); // boolean values set by php_value are strings |
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} |
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/** |
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* Get INI bytes value |
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* |
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* @param string |
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* |
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* @return int |
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*/ |
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public function iniBytes(string $ini): int |
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{ |
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$value = \ini_get($ini); |
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$unit = \strtolower(\substr($value, -1)); // Get the last char |
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$ival = \intval(\substr($value, 0, -1)); // Remove the last char |
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switch ($unit) { |
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case 'g': $value = $ival * 1024 * 1024 * 1024; break; |
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case 'm': $value = $ival * 1024 * 1024; break; |
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case 'k': $value = $ival * 1024; break; |
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} |
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return \intval($value); |
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} |
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/** |
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* Escape column key used in where() |
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* |
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* @param string |
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* |
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* @return string |
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*/ |
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public function escapeKey(string $key): string |
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{ |
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if (\preg_match('(^([\w(]+)(' . |
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\str_replace('_', '.*', \preg_quote($this->driver->escapeId('_'))) . ')([ \w)]+)$)', $key, $match)) { |
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//! columns looking like functions |
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return $match[1] . $this->driver->escapeId($this->driver->unescapeId($match[2])) . $match[3]; //! SQL injection |
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} |
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return $this->driver->escapeId($key); |
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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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public function repeatPattern(string $pattern, int $length) |
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{ |
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// fix for Compilation failed: number too big in {} quantifier |
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// can create {0,0} which is OK |
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return \str_repeat("$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 = '') |
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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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} |
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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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* Escape or unescape string to use inside form [] |
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* |
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* @param string $idf |
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* @param bool $back |
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* |
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* @return string |
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*/ |
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public function bracketEscape(string $idf, bool $back = false) |
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{ |
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// escape brackets inside name='x[]' |
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static $trans = [':' => ':1', ']' => ':2', '[' => ':3', '"' => ':4']; |
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return \strtr($idf, ($back ? \array_flip($trans) : $trans)); |
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} |
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} |
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lagdo /
jaxon-dbadmin
