lib/ParameterParser.php

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