phpmyadmin/libraries/StringNativeType.class.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Implements PMA_StringByte interface using native PHP functions.
   5  *
   6  * @package    PhpMyAdmin-String
   7  * @subpackage Native
   8  */
   9 if (! defined('PHPMYADMIN')) {
  10     exit;
  11 }
  12
  13 require_once 'libraries/StringAbstractType.class.php';
  14
  15 /**
  16  * Implements PMA_StringByte interface using native PHP functions.
  17  *
  18  * @package    PhpMyAdmin-String
  19  * @subpackage Native
  20  * @todo       May be join this class with PMA_StringNative class
  21  */
  22 class PMA_StringNativeType extends PMA_StringAbstractType
  23 {
  24     /**
  25      * Checks if a character is an alphanumeric one
  26      *
  27      * @param string $c character to check for
  28      *
  29      * @return boolean whether the character is an alphanumeric one or not
  30      */
  31     public function isAlnum($c)
  32     {
  33         return ($this->isAlpha($c) || $this->isDigit($c));
  34     } // end of the "isAlnum()" function
  35
  36     /**
  37      * Checks if a character is an alphabetic one
  38      *
  39      * @param string $c character to check for
  40      *
  41      * @return boolean whether the character is an alphabetic one or not
  42      */
  43     public function isAlpha($c)
  44     {
  45         return ($this->isUpper($c) || $this->isLower($c));
  46     } // end of the "isAlpha()" function
  47
  48     /**
  49      * Checks if a character is a digit
  50      *
  51      * @param string $c character to check for
  52      *
  53      * @return boolean whether the character is a digit or not
  54      */
  55     public function isDigit($c)
  56     {
  57         $ord_zero = 48; //ord('0');
  58         $ord_nine = 57; //ord('9');
  59         $ord_c    = ord($c);
  60
  61         return $this->numberInRangeInclusive($ord_c, $ord_zero, $ord_nine);
  62     } // end of the "isDigit()" function
  63
  64     /**
  65      * Checks if a character is an upper alphabetic one
  66      *
  67      * @param string $c character to check for
  68      *
  69      * @return boolean whether the character is an upper alphabetic one or not
  70      */
  71     public function isUpper($c)
  72     {
  73         $ord_A = 65; //ord('A');
  74         $ord_Z = 90; //ord('Z');
  75         $ord_c    = ord($c);
  76
  77         return $this->numberInRangeInclusive($ord_c, $ord_A, $ord_Z);
  78     } // end of the "isUpper()" function
  79
  80     /**
  81      * Checks if a character is a lower alphabetic one
  82      *
  83      * @param string $c character to check for
  84      *
  85      * @return boolean whether the character is a lower alphabetic one or not
  86      */
  87     public function isLower($c)
  88     {
  89         $ord_a = 97;  //ord('a');
  90         $ord_z = 122; //ord('z');
  91         $ord_c    = ord($c);
  92
  93         return $this->numberInRangeInclusive($ord_c, $ord_a, $ord_z);
  94     } // end of the "isLower()" function
  95
  96     /**
  97      * Checks if a character is a space one
  98      *
  99      * @param string $c character to check for
 100      *
 101      * @return boolean whether the character is a space one or not
 102      */
 103     public function isSpace($c)
 104     {
 105         $ord_space = 32;    //ord(' ')
 106         $ord_tab   = 9;     //ord('\t')
 107         $ord_CR    = 13;    //ord('\n')
 108         $ord_NOBR  = 160;   //ord('U+00A0);
 109         $ord_c     = ord($c);
 110
 111         return ($ord_c == $ord_space
 112             || $ord_c == $ord_NOBR
 113             || $this->numberInRangeInclusive($ord_c, $ord_tab, $ord_CR));
 114     } // end of the "isSpace()" function
 115
 116     /**
 117      * Checks if a character is an hexadecimal digit
 118      *
 119      * @param string $c character to check for
 120      *
 121      * @return boolean whether the character is an hexadecimal digit or not
 122      */
 123     public function isHexDigit($c)
 124     {
 125         $ord_Aupper = 65;  //ord('A');
 126         $ord_Fupper = 70;  //ord('F');
 127         $ord_Alower = 97;  //ord('a');
 128         $ord_Flower = 102; //ord('f');
 129         $ord_zero   = 48;  //ord('0');
 130         $ord_nine   = 57;  //ord('9');
 131         $ord_c      = ord($c);
 132
 133         return ($this->numberInRangeInclusive($ord_c, $ord_zero, $ord_nine)
 134             || $this->numberInRangeInclusive($ord_c, $ord_Aupper, $ord_Fupper)
 135             || $this->numberInRangeInclusive($ord_c, $ord_Alower, $ord_Flower));
 136     } // end of the "isHexDigit()" function
 137 }
 138 ?>