136 lines
3.9 KiB
PHP
136 lines
3.9 KiB
PHP
<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* Specialized String Functions for phpMyAdmin
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*
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* Defines a set of function callbacks that have a pure C version available if
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* the "ctype" extension is available, but otherwise have PHP versions to use
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* (that are slower).
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*
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* The SQL Parser code relies heavily on these functions.
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*
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* @package PhpMyAdmin-String
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* @subpackage Native
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*/
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if (! defined('PHPMYADMIN')) {
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exit;
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}
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class PMA_StringNativeType
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{
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/**
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* Checks if a character is an alphanumeric one
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is an alphanumeric one or not
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*/
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public static function isAlnum($c)
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{
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return (self::isUpper($c) || self::isLower($c) || self::isDigit($c));
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} // end of the "isAlnum()" function
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/**
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* Checks if a character is an alphabetic one
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is an alphabetic one or not
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*/
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public static function isAlpha($c)
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{
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return (self::isUpper($c) || self::isLower($c));
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} // end of the "isAlpha()" function
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/**
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* Checks if a character is a digit
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is a digit or not
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*/
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public static function isDigit($c)
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{
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$ord_zero = 48; //ord('0');
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$ord_nine = 57; //ord('9');
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$ord_c = ord($c);
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return PMA_STR_numberInRangeInclusive($ord_c, $ord_zero, $ord_nine);
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} // end of the "isDigit()" function
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/**
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* Checks if a character is an upper alphabetic one
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is an upper alphabetic one or not
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*/
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public static function isUpper($c)
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{
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$ord_zero = 65; //ord('A');
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$ord_nine = 90; //ord('Z');
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$ord_c = ord($c);
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return PMA_STR_numberInRangeInclusive($ord_c, $ord_zero, $ord_nine);
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} // end of the "isUpper()" function
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/**
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* Checks if a character is a lower alphabetic one
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is a lower alphabetic one or not
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*/
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public static function isLower($c)
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{
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$ord_zero = 97; //ord('a');
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$ord_nine = 122; //ord('z');
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$ord_c = ord($c);
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return PMA_STR_numberInRangeInclusive($ord_c, $ord_zero, $ord_nine);
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} // end of the "isLower()" function
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/**
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* Checks if a character is a space one
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is a space one or not
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*/
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public static function isSpace($c)
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{
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$ord_space = 32; //ord(' ')
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$ord_tab = 9; //ord('\t')
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$ord_CR = 13; //ord('\n')
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$ord_NOBR = 160; //ord('U+00A0);
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$ord_c = ord($c);
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return ($ord_c == $ord_space
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|| $ord_c == $ord_NOBR
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|| PMA_STR_numberInRangeInclusive($ord_c, $ord_tab, $ord_CR));
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} // end of the "isSpace()" function
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/**
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* Checks if a character is an hexadecimal digit
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*
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* @param string $c character to check for
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*
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* @return boolean whether the character is an hexadecimal digit or not
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*/
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public static function isHexDigit($c)
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{
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$ord_Aupper = 65; //ord('A');
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$ord_Fupper = 70; //ord('F');
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$ord_Alower = 97; //ord('a');
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$ord_Flower = 102; //ord('f');
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$ord_zero = 48; //ord('0');
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$ord_nine = 57; //ord('9');
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$ord_c = ord($c);
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return (PMA_STR_numberInRangeInclusive($ord_c, $ord_zero, $ord_nine)
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|| PMA_STR_numberInRangeInclusive($ord_c, $ord_Aupper, $ord_Fupper)
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|| PMA_STR_numberInRangeInclusive($ord_c, $ord_Alower, $ord_Flower));
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} // end of the "isHexDigit()" function
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}
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?>
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