lib/ParameterParser.php

   1 <?php
   2
   3 class ParameterParser
   4 {
   5         private $aParams;
   6
   7         function __construct($aParams=NULL)
   8         {
   9                 $this->aParams = ($aParams === NULL) ? $_GET : $aParams;
  10         }
  11
  12         function getBool($sName, $bDefault=false)
  13         {
  14                 if (!isset($this->aParams[$sName]) || strlen($this->aParams[$sName]) == 0)
  15                 {
  16                         return $bDefault;
  17                 }
  18
  19                 return (bool) $this->aParams[$sName];
  20         }
  21
  22         function getInt($sName, $bDefault=false)
  23         {
  24                 if (!isset($this->aParams[$sName]) || strlen($this->aParams[$sName]) == 0)
  25                 {
  26                         return $bDefault;
  27                 }
  28
  29                 if (!preg_match('/^[+-]?[0-9]+$/', $this->aParams[$sName]))
  30                 {
  31                         userError("Integer number expected for parameter '$sName'");
  32                 }
  33
  34                 return (int) $this->aParams[$sName];
  35         }
  36
  37         function getFloat($sName, $bDefault=false)
  38         {
  39                 if (!isset($this->aParams[$sName]) || strlen($this->aParams[$sName]) == 0)
  40                 {
  41                         return $bDefault;
  42                 }
  43
  44                 if (!preg_match('/^[+-]?[0-9]*\.?[0-9]+$/', $this->aParams[$sName]))
  45                 {
  46                         userError("Floating-point number expected for parameter '$sName'");
  47                 }
  48
  49                 return (float) $this->aParams[$sName];
  50         }
  51
  52         function getString($sName, $bDefault=false)
  53         {
  54                 if (!isset($this->aParams[$sName]) || strlen($this->aParams[$sName]) == 0)
  55                 {
  56                         return $bDefault;
  57                 }
  58
  59                 return $this->aParams[$sName];
  60         }
  61
  62         function getSet($sName, $aValues, $sDefault=false)
  63         {
  64                 if (!isset($this->aParams[$sName]) || strlen($this->aParams[$sName]) == 0)
  65                 {
  66                         return $sDefault;
  67                 }
  68
  69                 if (!in_array($this->aParams[$sName], $aValues))
  70                 {
  71                         userError("Parameter '$sName' must be one of: ".join(', ', $aValues));
  72                 }
  73
  74                 return $this->aParams[$sName];
  75         }
  76
  77         function getStringList($sName, $aDefault=false)
  78         {
  79                 $sValue = $this->getString($sName);
  80
  81                 if ($sValue)
  82                 {
  83                         return explode(',', $sValue);
  84                 }
  85
  86                 return $aDefault;
  87         }
  88
  89         function getPreferredLanguages($sFallback=NULL)
  90         {
  91                 if ($sFallback === NULL && isset($_SERVER["HTTP_ACCEPT_LANGUAGE"]))
  92                 {
  93                         $sFallback = $_SERVER["HTTP_ACCEPT_LANGUAGE"];
  94                 }
  95
  96                 $aLanguages = array();
  97                 $sLangString = $this->getString('accept-language', $sFallback);
  98
  99                 if ($sLangString)
 100                 {
 101                         if (preg_match_all('/(([a-z]{1,8})(-[a-z]{1,8})?)\s*(;\s*q\s*=\s*(1|0\.[0-9]+))?/i', $sLangString, $aLanguagesParse, PREG_SET_ORDER))
 102                         {
 103                                 foreach($aLanguagesParse as $iLang => $aLanguage)
 104                                 {
 105                                         $aLanguages[$aLanguage[1]] = isset($aLanguage[5])?(float)$aLanguage[5]:1 - ($iLang/100);
 106                                         if (!isset($aLanguages[$aLanguage[2]])) $aLanguages[$aLanguage[2]] = $aLanguages[$aLanguage[1]]/10;
 107                                 }
 108                                 arsort($aLanguages);
 109                         }
 110                 }
 111                 if (!sizeof($aLanguages) && CONST_Default_Language)
 112                 {
 113                         $aLanguages[CONST_Default_Language] = 1;
 114                 }
 115
 116                 foreach($aLanguages as $sLanguage => $fLanguagePref)
 117                 {
 118                         $aLangPrefOrder['short_name:'.$sLanguage] = 'short_name:'.$sLanguage;
 119                         $aLangPrefOrder['name:'.$sLanguage] = 'name:'.$sLanguage;
 120                 }
 121                 $aLangPrefOrder['short_name'] = 'short_name';
 122                 $aLangPrefOrder['name'] = 'name';
 123                 $aLangPrefOrder['brand'] = 'brand';
 124                 foreach($aLanguages as $sLanguage => $fLanguagePref)
 125                 {
 126                         $aLangPrefOrder['official_name:'.$sLanguage] = 'official_name:'.$sLanguage;
 127                 }
 128                 $aLangPrefOrder['official_name'] = 'official_name';
 129                 $aLangPrefOrder['ref'] = 'ref';
 130                 $aLangPrefOrder['type'] = 'type';
 131                 return $aLangPrefOrder;
 132         }
 133 }