lib/lib.php

   1 <?php
   2
   3 require_once(CONST_BasePath.'/lib/ClassTypes.php');
   4
   5 function fail($sError, $sUserError = false)
   6 {
   7     if (!$sUserError) $sUserError = $sError;
   8     error_log('ERROR: '.$sError);
   9     echo $sUserError."\n";
  10     exit(-1);
  11 }
  12
  13
  14 function getProcessorCount()
  15 {
  16     $sCPU = file_get_contents('/proc/cpuinfo');
  17     preg_match_all('#processor\s+: [0-9]+#', $sCPU, $aMatches);
  18     return count($aMatches[0]);
  19 }
  20
  21
  22 function getTotalMemoryMB()
  23 {
  24     $sCPU = file_get_contents('/proc/meminfo');
  25     preg_match('#MemTotal: +([0-9]+) kB#', $sCPU, $aMatches);
  26     return (int)($aMatches[1]/1024);
  27 }
  28
  29
  30 function getCacheMemoryMB()
  31 {
  32     $sCPU = file_get_contents('/proc/meminfo');
  33     preg_match('#Cached: +([0-9]+) kB#', $sCPU, $aMatches);
  34     return (int)($aMatches[1]/1024);
  35 }
  36
  37 function getDatabaseDate(&$oDB)
  38 {
  39     // Find the newest node in the DB
  40     $iLastOSMID = $oDB->getOne("select max(osm_id) from place where osm_type = 'N'");
  41     // Lookup the timestamp that node was created
  42     $sLastNodeURL = 'https://www.openstreetmap.org/api/0.6/node/'.$iLastOSMID.'/1';
  43     $sLastNodeXML = file_get_contents($sLastNodeURL);
  44
  45     if ($sLastNodeXML === false) {
  46         return false;
  47     }
  48
  49     preg_match('#timestamp="(([0-9]{4})-([0-9]{2})-([0-9]{2})T([0-9]{2}):([0-9]{2}):([0-9]{2})Z)"#', $sLastNodeXML, $aLastNodeDate);
  50
  51     return $aLastNodeDate[1];
  52 }
  53
  54
  55 function byImportance($a, $b)
  56 {
  57     if ($a['importance'] != $b['importance'])
  58         return ($a['importance'] > $b['importance']?-1:1);
  59
  60     return ($a['foundorder'] < $b['foundorder']?-1:1);
  61 }
  62
  63
  64 function javascript_renderData($xVal, $iOptions = 0)
  65 {
  66     $iOptions |= JSON_UNESCAPED_UNICODE;
  67     if (isset($_GET['pretty']) && in_array(strtolower($_GET['pretty']), array('1', 'true'))) {
  68         $iOptions |= JSON_PRETTY_PRINT;
  69     }
  70
  71     $jsonout = json_encode($xVal, $iOptions);
  72
  73     if (!isset($_GET['json_callback'])) {
  74         header('Content-Type: application/json; charset=UTF-8');
  75         echo $jsonout;
  76     } else {
  77         if (preg_match('/^[$_\p{L}][$_\p{L}\p{Nd}.[\]]*$/u', $_GET['json_callback'])) {
  78             header('Content-Type: application/javascript; charset=UTF-8');
  79             echo $_GET['json_callback'].'('.$jsonout.')';
  80         } else {
  81             header('HTTP/1.0 400 Bad Request');
  82         }
  83     }
  84 }
  85
  86 function addQuotes($s)
  87 {
  88     return "'".$s."'";
  89 }
  90
  91 function parseLatLon($sQuery)
  92 {
  93     $sFound    = null;
  94     $fQueryLat = null;
  95     $fQueryLon = null;
  96
  97     if (preg_match('/\\s*([NS])[ ]+([0-9]+[0-9.]*)[° ]+([0-9.]+)?[′\']*[, ]+([EW])[ ]+([0-9]+)[° ]+([0-9]+[0-9.]*)[′\']*\\s*/', $sQuery, $aData)) {
  98         /*               1         2                   3                    4         5            6
  99          * degrees decimal minutes
 100          * N 40 26.767, W 79 58.933
 101          * N 40°26.767′, W 79°58.933′
 102          */
 103         $sFound    = $aData[0];
 104         $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60);
 105         $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[5] + $aData[6]/60);
 106     } elseif (preg_match('/\\s*([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\']*[ ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+[0-9.]*)?[′\' ]+([EW])\\s*/', $sQuery, $aData)) {
 107         /*                     1            2                         3          4            5                      6
 108          * degrees decimal minutes
 109          * 40 26.767 N, 79 58.933 W
 110          * 40° 26.767′ N 79° 58.933′ W
 111          */
 112         $sFound    = $aData[0];
 113         $fQueryLat = ($aData[3]=='N'?1:-1) * ($aData[1] + $aData[2]/60);
 114         $fQueryLon = ($aData[6]=='E'?1:-1) * ($aData[4] + $aData[5]/60);
 115     } elseif (preg_match('/\\s*([NS])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*[, ]+([EW])[ ]([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+)[″"]*\\s*/', $sQuery, $aData)) {
 116         /*                     1        2            3              4                 5        6            7              8
 117          * degrees decimal seconds
 118          * N 40 26 46 W 79 58 56
 119          * N 40° 26′ 46″, W 79° 58′ 56″
 120          */
 121         $sFound    = $aData[0];
 122         $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2] + $aData[3]/60 + $aData[4]/3600);
 123         $fQueryLon = ($aData[5]=='E'?1:-1) * ($aData[6] + $aData[7]/60 + $aData[8]/3600);
 124     } elseif (preg_match('/\\s*([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+[0-9.]*)[″" ]+([NS])[, ]+([0-9]+)[° ]+([0-9]+)[′\' ]+([0-9]+[0-9.]*)[″" ]+([EW])\\s*/', $sQuery, $aData)) {
 125         /*                     1            2              3                    4          5            6              7                     8
 126          * degrees decimal seconds
 127          * 40 26 46 N 79 58 56 W
 128          * 40° 26′ 46″ N, 79° 58′ 56″ W
 129          * 40° 26′ 46.78″ N, 79° 58′ 56.89″ W
 130          */
 131         $sFound    = $aData[0];
 132         $fQueryLat = ($aData[4]=='N'?1:-1) * ($aData[1] + $aData[2]/60 + $aData[3]/3600);
 133         $fQueryLon = ($aData[8]=='E'?1:-1) * ($aData[5] + $aData[6]/60 + $aData[7]/3600);
 134     } elseif (preg_match('/\\s*([NS])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*[, ]+([EW])[ ]([0-9]+[0-9]*\\.[0-9]+)[°]*\\s*/', $sQuery, $aData)) {
 135         /*                     1        2                               3        4
 136          * degrees decimal
 137          * N 40.446° W 79.982°
 138          */
 139         $sFound    = $aData[0];
 140         $fQueryLat = ($aData[1]=='N'?1:-1) * ($aData[2]);
 141         $fQueryLon = ($aData[3]=='E'?1:-1) * ($aData[4]);
 142     } elseif (preg_match('/\\s*([0-9]+[0-9]*\\.[0-9]+)[° ]+([NS])[, ]+([0-9]+[0-9]*\\.[0-9]+)[° ]+([EW])\\s*/', $sQuery, $aData)) {
 143         /*                     1                           2          3                           4
 144          * degrees decimal
 145          * 40.446° N 79.982° W
 146          */
 147         $sFound    = $aData[0];
 148         $fQueryLat = ($aData[2]=='N'?1:-1) * ($aData[1]);
 149         $fQueryLon = ($aData[4]=='E'?1:-1) * ($aData[3]);
 150     } elseif (preg_match('/(\\s*\\[|^\\s*|\\s*)(-?[0-9]+[0-9]*\\.[0-9]+)[, ]+(-?[0-9]+[0-9]*\\.[0-9]+)(\\]\\s*|\\s*$|\\s*)/', $sQuery, $aData)) {
 151         /*                 1                   2                             3                        4
 152          * degrees decimal
 153          * 12.34, 56.78
 154          * 12.34 56.78
 155          * [12.456,-78.90]
 156          */
 157         $sFound    = $aData[0];
 158         $fQueryLat = $aData[2];
 159         $fQueryLon = $aData[3];
 160     } else {
 161         return false;
 162     }
 163
 164     return array($sFound, $fQueryLat, $fQueryLon);
 165 }
 166
 167
 168 function geometryText2Points($geometry_as_text, $fRadius)
 169 {
 170     $aPolyPoints = null;
 171     if (preg_match('#POLYGON\\(\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch)) {
 172         //
 173         preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
 174         //
 175     } elseif (preg_match('#LINESTRING\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch)) {
 176         //
 177         preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
 178         //
 179     } elseif (preg_match('#MULTIPOLYGON\\(\\(\\(([- 0-9.,]+)#', $geometry_as_text, $aMatch)) {
 180         //
 181         preg_match_all('/(-?[0-9.]+) (-?[0-9.]+)/', $aMatch[1], $aPolyPoints, PREG_SET_ORDER);
 182         //
 183     } elseif (preg_match('#POINT\\((-?[0-9.]+) (-?[0-9.]+)\\)#', $geometry_as_text, $aMatch)) {
 184         //
 185         $aPolyPoints = createPointsAroundCenter($aMatch[1], $aMatch[2], $fRadius);
 186         //
 187     }
 188
 189     if (isset($aPolyPoints)) {
 190         $aResultPoints = array();
 191         foreach ($aPolyPoints as $aPoint) {
 192             $aResultPoints[] = array($aPoint[1], $aPoint[2]);
 193         }
 194         return $aResultPoints;
 195     }
 196
 197     return;
 198 }
 199
 200 function createPointsAroundCenter($fLon, $fLat, $fRadius)
 201 {
 202     $iSteps = max(8, min(100, ($fRadius * 40000)^2));
 203     $fStepSize = (2*pi())/$iSteps;
 204     $aPolyPoints = array();
 205     for ($f = 0; $f < 2*pi(); $f += $fStepSize) {
 206         $aPolyPoints[] = array('', $fLon+($fRadius*sin($f)), $fLat+($fRadius*cos($f)) );
 207     }
 208     return $aPolyPoints;
 209 }
 210
 211 function closestHouseNumber($aRow)
 212 {
 213     $fHouse = $aRow['startnumber']
 214                 + ($aRow['endnumber'] - $aRow['startnumber']) * $aRow['fraction'];
 215
 216     switch ($aRow['interpolationtype']) {
 217         case 'odd':
 218             $iHn = (int)($fHouse/2) * 2 + 1;
 219             break;
 220         case 'even':
 221             $iHn = (int)(round($fHouse/2)) * 2;
 222             break;
 223         default:
 224             $iHn = (int)(round($fHouse));
 225             break;
 226     }
 227
 228     return max(min($aRow['endnumber'], $iHn), $aRow['startnumber']);
 229 }