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location.php
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<?php
require_once('body.php');
require_once('place.php');
/*
* Geo location class
*
* 0.1 2010-01-28 18:52 DcK
*
* @package Zed
* @subpackage Geo
* @copyright Copyright (c) 2010, Dereckson
* @license Released under BSD license
* @version 0.1
*
*/
class GeoLocation {
private $data;
/*
* @var GeoBody a body object
*/
public $body = null;
/*
* @var GeoPlace a place object
*/
public $place = null;
function __construct ($global = null, $local = null) {
if (!$global) {
$this->data = array();
} elseif (ereg("[BS][0-9]{5}[0-9]{3}", $global)) {
$this->data[0] = $global;
} elseif (ereg("[BS][0-9]{5}", $global)) {
$this->data[0] = $global;
} else {
global $db;
$name = $db->sql_escape($global);
$sql = "SELECT location_code FROM " . TABLE_LOCATIONS . " WHERE location_name LIKE '$name'";
$code = $db->sql_query_express($sql);
if ($code) {
$this->data[0] = $code;
return;
}
throw new Exception("Invalid expression: $global");
}
$this->load_classes();
//TODO: handle $local
}
function load_classes () {
//No data, no class to load
if (!count($this->data))
return;
//Loads global classes
$global = $this->data[0];
$body_code = substr($global, 1, 5);
switch ($global[0]) {
case 'B':
switch (strlen($global)) {
case 9:
$this->place = GeoPlace::from_code($global);
case 6:
$this->body = new GeoBody($body_code);
break;
}
break;
case 'S':
break;
}
}
function __get ($variable) {
switch ($variable) {
/* main variables */
case 'global':
return $this->data[0];
break;
case 'local':
return $this->data[1];
break;
/* global location */
case 'type':
return $this->data[0][0];
case 'body_code':
if ($this->data[0][0] == 'B') {
return substr($this->data[0], 1, 5);
}
return null;
case 'place_code':
if ($this->data[0][0] == 'B') {
return substr($this->data[0], 6, 3);
}
return null;
case 'body_kind':
if ($this->data[0][0] == 'B' && $this->body != null) {
if ($kind = $this->body->kind()) {
return $kind;
}
}
return 'place';
case 'containsGlobalLocation':
return count($this->data) > 0;
case 'containsLocalLocation':
return count($this->data) > 1;
default:
throw new Exception("Unknown variable: $variable");
break;
}
}
/*
* Checks if the place exists
*
* @return boolean true if the place exists ; false otherwise
*/
function exists () {
$n = count($this->data);
//If not defined, it doesn't exist
if ($n == 0) return false;
//Checks global location
switch ($this->data[0][0]) {
case 'B':
switch (strlen($this->data[0])) {
case 9:
if (!$place = GeoPlace::from_code($this->data[0]))
return false;
break;
case 6:
$body = new GeoBody(substr($this->data[0], 1));
if ($body->lastError) return false;
break;
default:
message_die(GENERAL_ERROR, "Invalid global location expression size: " . $this->data[0], "GeoLocation exists method", __LINE__, __FILE__);
}
break;
case 'S':
message_die(GENERAL_ERROR, "Handle S", 'TODO', __LINE__, __FILE__);
break;
default:
message_die(GENERAL_ERROR, "Invalid global location expression size: " . $this->data[0], "GeoLocation exists method", __LINE__, __FILE__);
return false;
}
if ($n > 1) {
message_die(GENERAL_ERROR, "Can't check if a local place exists yet.", "GeoLocation exists method", __LINE__, __FILE__);
}
return true;
}
function equals ($expression) {
if ($expression == $this->data[0]) return true;
$n1 = strlen($expression);
$n2 = strlen($this->data[0]);
if ($n1 > $n2) {
return substr($expression, 0, $n2) == $this->data[0];
}
return false;
}
function __toString () {
if (!$this->data[0])
return "";
switch ($this->data[0][0]) {
case 'S':
message_die(GENERAL_ERROR, "Handle spaceship in GeoLocation __toString()", "TODO", __LINE__, __FILE__);
break;
case 'B':
$body = new GeoBody($this->body_code);
$location[] = $body->name ? $body->name : lang_get('UnknownBody');
if (strlen($this->data[0]) == 9) {
$place = GeoPlace::from_code($this->data[0]);
$location[] = $place->name ? $place->name : lang_get('UnknownPlace');
}
break;
default:
message_die(GENERAL_ERROR, "Unknown location identifier: $type.<br />Expected: B or S.");
}
return implode(", ", array_reverse($location));
}
function __set ($variable, $value) {
switch ($variable) {
/* main variables */
case 'global':
$this->data[0] = $value;
break;
case 'local':
$this->data[1] = $value;
break;
/* global location */
case 'type':
if ($value == 'B' || $value == 'S') {
if (!$this->data[0]) {
$this->data[0] = $value;
} else {
$this->data[0][0] = $value;
}
}
break;
case 'body_code':
if (ereg("[0-9]{1,3}", $value)) {
$value = sprintf("%03d", $value);
if (!$this->data[0]) {
$this->data[0] = "B" . $value;
return;
} elseif ($this->data[0][0] == 'B') {
$this->data[0] = "B" . $value . substr($this->data[0], 5);
return;
}
throw new Exception("Global location isn't a body.");
}
throw new Exception("$value isn't a valid body code");
case 'place_code':
if (!ereg("[0-9]{1,5}", $value)) {
throw new Exception("$value isn't a valid place code");
}
$value = sprintf("%05d", $value);
if ($this->data[0][0] == 'B') {
$this->data[0] = substr($this->data[0], 0, 6) . $value;
}
throw new Exception("Global location isn't a body.");
default:
throw new Exception("Unknown variable: $variable");
break;
}
}
}
?>

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location.php (8 KB)

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