lib/ParameterParser.php

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