helper_plugin_spatialhelper_index::_convertRationaltoFloat() - Code Metrics - Inspection of "fix calculating long/lat on 3/4 of the planet" - mprins/dokuwiki-plugin-spatialhelper - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#11)

by Michael

created 2017-06-01 10:56 UTC

_convertRationaltoFloat() A

↳ Parent: helper_plugin_spatialhelper_index

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	9
rs	9.6666
c	0
b	0
f	0
cc	2
eloc	6
nc	2
nop	1

<?php
/*
 * Copyright (c) 2011-2016 Mark C. Prins <[email protected]>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
if (!defined('DOKU_INC')) {
	die ();
}

/**
 * DokuWiki Plugin spatialhelper (index component).
 *
 * @license BSD license
 * @author Mark Prins
 */
class helper_plugin_spatialhelper_index extends DokuWiki_Plugin {
	/**
	 * directory for index files.
	 *
	 * @var string
	 */
	protected $idx_dir = '';

	/**
	 * spatial index, well lookup list/array so we can do spatial queries.
	 * entries should be: array("geohash" => {"id1","id3",})
	 *
	 * @var array
	 */
	protected $spatial_idx = array();

	/**
	 * handle to the geoPHP plugin.
	 */
	protected $geophp;

	/**
	 * Constructor, initialises the spatial index.
	 */
	public function __construct() {
		// parent::__construct ();

		if (!$geophp = &plugin_load('helper', 'geophp')) {
			$message = 'helper_plugin_spatialhelper_index::spatialhelper_index: geophp plugin is not available.';
			msg($message, - 1);
			return "";

		}

		global $conf;
		$this->idx_dir = $conf ['indexdir'];
		// test if there is a spatialindex, if not build one for the wiki
		if (!@file_exists($this->idx_dir . '/spatial.idx')) {
			// creates and stores the index
			$this->generateSpatialIndex();
		} else {
			$this->spatial_idx = unserialize(io_readFile($this->idx_dir . '/spatial.idx', false));
			dbglog($this->spatial_idx, 'done loading spatial index');
		}
	}

	/**
	 * Update the spatial index for the page.
	 *
	 * @param string $id
	 *        	the document ID
	 */
	public function updateSpatialIndex($id) {
		$geotags = p_get_metadata($id, 'geo');
		if (empty ($geotags)) {
			return false;
		}
		if (empty ($geotags ['lon']) || empty ($geotags ['lat'])) {
			return false;
		}
		dbglog($geotags, "Geo metadata found for page $id");
		$geometry = new Point($geotags ['lon'], $geotags ['lat']);
		$geohash = $geometry->out('geohash');
		dbglog('Update index for geohash: ' . $geohash);
		$succes = $this->_addToIndex($geohash, $id);
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
	}

	/**
	 * Looks up the geohash(es) for the document in the index.
	 *
	 * @param String $id
	 *        	document ID
	 * @param array $index
	 *        	spatial index
	 */
	public function findHashesForId($id, $index) {
		$hashes = array();
		foreach ($index as $hash => $docIds) {
			if (in_array($id, $docIds, false)) {
				$hashes [] = $hash;
			}
		}
		dbglog($hashes, "Found the following hashes for $id (should only be 1)");
		return $hashes;
	}

	/**
	 * Deletes the page from the index.
	 *
	 * @param String $id
	 *        	document ID
	 */
	public function deleteFromIndex($id) {
		// check the index for document
		$knownHashes = $this->findHashesForId($id, $this->spatial_idx);
		if (empty ($knownHashes)) {
			return;
		}

		// TODO shortcut, need to make sure there is only one element, if not the index is corrupt
		$knownHash = $knownHashes [0];
		$knownIds = $this->spatial_idx [$knownHash];
		$i = array_search($id, $knownIds);
		dbglog("removing: $knownIds[$i] from the index.");
		unset ($knownIds [$i]);
		$this->spatial_idx [$knownHash] = $knownIds;
		if (empty ($this->spatial_idx [$knownHash])) {
			// dbglog ( "removing key: $knownHash from the index." );

			unset ($this->spatial_idx [$knownHash]);
		}
		$succes = $this->_saveIndex();
$myVar = 'Value';
$higher = false;

if (rand(1, 6) > 3) {
    $higher = true;
} else {
    $higher = false;
}
	}

	/**
	 * Save spatial index.
	 */
	private function _saveIndex() {
		return io_saveFile($this->idx_dir . '/spatial.idx', serialize($this->spatial_idx));
	}

	/**
	 * (re-)Generates the spatial index by running through all the pages in the wiki.
	 *
	 * @todo add an option to erase the old index
	 */
	public function generateSpatialIndex() {
		global $conf;
		require_once (DOKU_INC . 'inc/search.php');
		$pages = array();
		search($pages, $conf ['datadir'], 'search_allpages', array());
		foreach ($pages as $page) {
			$this->updateSpatialIndex($page ['id']);
		}
		// media
		$media = array();
		search($media, $conf ['mediadir'], 'search_media', array());
		foreach ($media as $medium) {
			if ($medium ['isimg']) {
				$this->indexImage($medium);
			}
		}
		return true;
	}

	/**
	 * Add an index entry for this file having EXIF / IPTC data.
	 *
	 * @param unknown_type $img Dokuwiki image
	 * @see http://www.php.net/manual/en/function.iptcparse.php
	 * @see http://php.net/manual/en/function.exif-read-data.php
	 *
	 * @return boolean true when image was succesfully added to the index.
	 */
	public function indexImage($img) {
		// test for supported files (jpeg only)
		if ((substr($img ['file'], - strlen('.jpg')) !== '.jpg') and (substr($img ['file'], - strlen('.jpeg')) !== '.jpeg')) {
			return false;
		}

		$geometry = $this->getCoordsFromExif($img ['id']);
		if (!$geometry) {
			return false;
		}
		$geohash = $geometry->out('geohash');
		// TODO truncate the geohash to something reasonable, otherwise they are
		// useless as an indexing mechanism eg. u1h73weckdrmskdqec3c9 is far too
		// precise, limit at ~9 as most GPS are not submeter accurate
		return $this->_addToIndex($geohash, 'media__' . $img ['id']);
	}

	/**
	 * retrieve GPS decimal coordinates from exif.
	 *
	 * @param
	 *        	$id
	 * @return Point or false
	 */
	public function getCoordsFromExif($id) {
		$exif = exif_read_data(mediaFN($id), 0, true);
		if (empty ($exif ['GPS'])) {
			return false;
class Author {
    private $name;

    public function __construct($name) {
        $this->name = $name;
    }

    public function getName() {
        return $this->name;
    }
}

abstract class Post {
    public function getAuthor() {
        return 'Johannes';
    }
}

class BlogPost extends Post {
    public function getAuthor() {
        return new Author('Johannes');
    }
}

class ForumPost extends Post { /* ... */ }

function my_function(Post $post) {
    echo strtoupper($post->getAuthor());
}
		}

		$lat = $this->convertDMStoD(array(
				$exif ['GPS'] ['GPSLatitude'] [0],
				$exif ['GPS'] ['GPSLatitude'] [1],
				$exif ['GPS'] ['GPSLatitude'] [2],
				$exif ['GPS'] ['GPSLatitudeRef']
		));

		$lon = $this->convertDMStoD(array(
				$exif ['GPS'] ['GPSLongitude'] [0],
				$exif ['GPS'] ['GPSLongitude'] [1],
				$exif ['GPS'] ['GPSLongitude'] [2],
				$exif ['GPS'] ['GPSLongitudeRef']
		));

		return new Point($lon, $lat);
	}

	/**
	 * Store the hash/id entry in the index.
	 *
	 * @param string $geohash
	 * @param string $id
	 *        	page or media id
	 * @return boolean true when succesful
	 */
	private function _addToIndex($geohash, $id) {
		$pageIds = array();
		// check index for key/geohash
		if (!array_key_exists($geohash, $this->spatial_idx)) {
			dbglog("Geohash $geohash not in index, just add $id.");
			$pageIds [] = $id;
		} else {
			dbglog('Geohash for document is in index, find it.');
			// check the index for document
			$knownHashes = $this->findHashesForId($id, $this->spatial_idx);
			if (empty ($knownHashes)) {
				dbglog("No index record found for document $id, just add");
				$pageIds = $this->spatial_idx [$geohash];
				$pageIds [] = $id;
			}
			// TODO shortcut, need to make sure there is only one element, if not the index is corrupt
			$knownHash = $knownHashes [0];

			if ($knownHash == $geohash) {
				dbglog("Document $id was found in index and has the same geohash, nothing to do.");
				return true;
			}

			if (!empty ($knownHash)) {
				dbglog("Document/media $id was found in index but has different geohash (it moved).");
				$knownIds = $this->spatial_idx [$knownHash];
				dbglog($knownIds, "Known id's for this hash:");
				// remove it from the old geohash element
				$i = array_search($id, $knownIds);
				dbglog('Unsetting:' . $knownIds [$i]);
				unset ($knownIds [$i]);
				$this->spatial_idx [$knownHash] = $knownIds;
				// set on new geohash element
				$pageIds = $this->spatial_idx [$geohash];
				$pageIds [] = $id;
			}
		}
		// store and save
		$this->spatial_idx [$geohash] = $pageIds;
		return $this->_saveIndex();
	}

	/**
	 * convert DegreesMinutesSeconds to Decimal degrees.
	 *
	 * @param array $param array of rational DMS
	 * @return number
	 */
	public function convertDMStoD($param) {
		if (!is_array($param)) {
			$param = array($param);
		}
		$deg = $this->_convertRationaltoFloat($param [0]);
		$min = $this->_convertRationaltoFloat($param [1]) / 60;
		$sec = $this->_convertRationaltoFloat($param [2]) / 60 / 60;
		// Hemisphere (N, S, W or E)
        $hem = ($param [3] === 'N' || $param [3] === 'E') ? 1 : -1;
        return $hem * ($deg + $min + $sec);
	}

	private function _convertRationaltoFloat($param) {
		// rational64u
		$nums = explode('/', $param);
		if (intval($nums[1]) > 0) {
			return intval($nums[0]) / intval($nums[1]);
		} else {
			return intval($nums[0]);
		}
	}
}


1		<?php
2		/*
3		* Copyright (c) 2011-2016 Mark C. Prins <[email protected]>
4		*
5		* Permission to use, copy, modify, and distribute this software for any
6		* purpose with or without fee is hereby granted, provided that the above
7		* copyright notice and this permission notice appear in all copies.
8		*
9		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16		*/
17		if (!defined('DOKU_INC')) {
18		die ();
19		}
20
21		/**
22		* DokuWiki Plugin spatialhelper (index component).
23		*
24		* @license BSD license
25		* @author Mark Prins
26		*/
27		class helper_plugin_spatialhelper_index extends DokuWiki_Plugin {
28		/**
29		* directory for index files.
30		*
31		* @var string
32		*/
33		protected $idx_dir = '';
34
35		/**
36		* spatial index, well lookup list/array so we can do spatial queries.
37		* entries should be: array("geohash" => {"id1","id3",})
38		*
39		* @var array
40		*/
41		protected $spatial_idx = array();
42
43		/**
44		* handle to the geoPHP plugin.
45		*/
46		protected $geophp;
47
48		/**
49		* Constructor, initialises the spatial index.
50		*/
51		public function __construct() {
52		// parent::__construct ();
		0 ignored issues – show Unused Code Comprehensibility introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report `63%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
53	View Code Duplication	if (!$geophp = &plugin_load('helper', 'geophp')) {
54		$message = 'helper_plugin_spatialhelper_index::spatialhelper_index: geophp plugin is not available.';
55		msg($message, - 1);
56		return "";
		0 ignored issues – show Bug introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report Constructors do not have meaningful return values, anything that is returned from here is discarded. Are you sure this is correct? Loading history...
57		}
58
59		global $conf;
60		$this->idx_dir = $conf ['indexdir'];
61		// test if there is a spatialindex, if not build one for the wiki
62		if (!@file_exists($this->idx_dir . '/spatial.idx')) {
63		// creates and stores the index
64		$this->generateSpatialIndex();
65		} else {
66		$this->spatial_idx = unserialize(io_readFile($this->idx_dir . '/spatial.idx', false));
67		dbglog($this->spatial_idx, 'done loading spatial index');
68		}
69		}
70
71		/**
72		* Update the spatial index for the page.
73		*
74		* @param string $id
75		* the document ID
76		*/
77		public function updateSpatialIndex($id) {
78		$geotags = p_get_metadata($id, 'geo');
79		if (empty ($geotags)) {
80		return false;
81		}
82		if (empty ($geotags ['lon']) \|\| empty ($geotags ['lat'])) {
83		return false;
84		}
85		dbglog($geotags, "Geo metadata found for page $id");
86		$geometry = new Point($geotags ['lon'], $geotags ['lat']);
87		$geohash = $geometry->out('geohash');
88		dbglog('Update index for geohash: ' . $geohash);
89		$succes = $this->_addToIndex($geohash, $id);
		0 ignored issues – show Unused Code introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report `$succes` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
90		}
91
92		/**
93		* Looks up the geohash(es) for the document in the index.
94		*
95		* @param String $id
96		* document ID
97		* @param array $index
98		* spatial index
99		*/
100		public function findHashesForId($id, $index) {
101		$hashes = array();
102		foreach ($index as $hash => $docIds) {
103		if (in_array($id, $docIds, false)) {
104		$hashes [] = $hash;
105		}
106		}
107		dbglog($hashes, "Found the following hashes for $id (should only be 1)");
108		return $hashes;
109		}
110
111		/**
112		* Deletes the page from the index.
113		*
114		* @param String $id
115		* document ID
116		*/
117		public function deleteFromIndex($id) {
118		// check the index for document
119		$knownHashes = $this->findHashesForId($id, $this->spatial_idx);
120		if (empty ($knownHashes)) {
121		return;
122		}
123
124		// TODO shortcut, need to make sure there is only one element, if not the index is corrupt
125		$knownHash = $knownHashes [0];
126		$knownIds = $this->spatial_idx [$knownHash];
127		$i = array_search($id, $knownIds);
128		dbglog("removing: $knownIds[$i] from the index.");
129		unset ($knownIds [$i]);
130		$this->spatial_idx [$knownHash] = $knownIds;
131		if (empty ($this->spatial_idx [$knownHash])) {
132		// dbglog ( "removing key: $knownHash from the index." );
		0 ignored issues – show Unused Code Comprehensibility introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report `45%` of this comment could be valid code. Did you maybe forget this after debugging? Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have checked you do not need it. The code might also have been commented out for debugging purposes. In this case it is vital that someone uncomments it again or your project may behave in very unexpected ways in production. This check looks for comments that seem to be mostly valid code and reports them. Loading history...
133		unset ($this->spatial_idx [$knownHash]);
134		}
135		$succes = $this->_saveIndex();
		0 ignored issues – show Unused Code introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report `$succes` is not used, you could remove the assignment. This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently. $myVar = 'Value'; $higher = false; if (rand(1, 6) > 3) { $higher = true; } else { $higher = false; } Both the `$myVar` assignment in line 1 and the `$higher` assignment in line 2 are dead. The first because `$myVar` is never used and the second because `$higher` is always overwritten for every possible time line. Loading history...
136		}
137
138		/**
139		* Save spatial index.
140		*/
141		private function _saveIndex() {
142		return io_saveFile($this->idx_dir . '/spatial.idx', serialize($this->spatial_idx));
143		}
144
145		/**
146		* (re-)Generates the spatial index by running through all the pages in the wiki.
147		*
148		* @todo add an option to erase the old index
149		*/
150		public function generateSpatialIndex() {
151		global $conf;
152		require_once (DOKU_INC . 'inc/search.php');
153		$pages = array();
154		search($pages, $conf ['datadir'], 'search_allpages', array());
155		foreach ($pages as $page) {
156		$this->updateSpatialIndex($page ['id']);
157		}
158		// media
159		$media = array();
160		search($media, $conf ['mediadir'], 'search_media', array());
161		foreach ($media as $medium) {
162		if ($medium ['isimg']) {
163		$this->indexImage($medium);
164		}
165		}
166		return true;
167		}
168
169		/**
170		* Add an index entry for this file having EXIF / IPTC data.
171		*
172		* @param unknown_type $img Dokuwiki image
173		* @see http://www.php.net/manual/en/function.iptcparse.php
174		* @see http://php.net/manual/en/function.exif-read-data.php
175		*
176		* @return boolean true when image was succesfully added to the index.
177		*/
178		public function indexImage($img) {
179		// test for supported files (jpeg only)
180		if ((substr($img ['file'], - strlen('.jpg')) !== '.jpg') and (substr($img ['file'], - strlen('.jpeg')) !== '.jpeg')) {
181		return false;
182		}
183
184		$geometry = $this->getCoordsFromExif($img ['id']);
185		if (!$geometry) {
186		return false;
187		}
188		$geohash = $geometry->out('geohash');
189		// TODO truncate the geohash to something reasonable, otherwise they are
190		// useless as an indexing mechanism eg. u1h73weckdrmskdqec3c9 is far too
191		// precise, limit at ~9 as most GPS are not submeter accurate
192		return $this->_addToIndex($geohash, 'media__' . $img ['id']);
193		}
194
195		/**
196		* retrieve GPS decimal coordinates from exif.
197		*
198		* @param
199		* $id
200		* @return Point or false
201		*/
202		public function getCoordsFromExif($id) {
203		$exif = exif_read_data(mediaFN($id), 0, true);
204		if (empty ($exif ['GPS'])) {
205		return false;
		0 ignored issues – show Bug Best Practice introduced 2016-09-11 13:28 UTC by Report Bug Copy Issue Report The return type of `return false;` (`false`) is incompatible with the return type documented by `helper_plugin_spatialhel...ndex::getCoordsFromExif` of type `Point`. If you return a value from a function or method, it should be a sub-type of the type that is given by the parent type f.e. an interface, or abstract method. This is more formally defined by the Lizkov substitution principle, and guarantees that classes that depend on the parent type can use any instance of a child type interchangably. This principle also belongs to the SOLID principles for object oriented design. Let’s take a look at an example: class Author { private $name; public function __construct($name) { $this->name = $name; } public function getName() { return $this->name; } } abstract class Post { public function getAuthor() { return 'Johannes'; } } class BlogPost extends Post { public function getAuthor() { return new Author('Johannes'); } } class ForumPost extends Post { /* ... */ } function my_function(Post $post) { echo strtoupper($post->getAuthor()); } Our function `my_function` expects a `Post` object, and outputs the author of the post. The base class `Post` returns a simple string and outputting a simple string will work just fine. However, the child class `BlogPost` which is a sub-type of `Post` instead decided to return an `object`, and is therefore violating the SOLID principles. If a `BlogPost` were passed to `my_function`, PHP would not complain, but ultimately fail when executing the `strtoupper` call in its body. Loading history...
206		}
207
208		$lat = $this->convertDMStoD(array(
209		$exif ['GPS'] ['GPSLatitude'] [0],
210		$exif ['GPS'] ['GPSLatitude'] [1],
211		$exif ['GPS'] ['GPSLatitude'] [2],
212		$exif ['GPS'] ['GPSLatitudeRef']
213		));
214
215		$lon = $this->convertDMStoD(array(
216		$exif ['GPS'] ['GPSLongitude'] [0],
217		$exif ['GPS'] ['GPSLongitude'] [1],
218		$exif ['GPS'] ['GPSLongitude'] [2],
219		$exif ['GPS'] ['GPSLongitudeRef']
220		));
221
222		return new Point($lon, $lat);
223		}
224
225		/**
226		* Store the hash/id entry in the index.
227		*
228		* @param string $geohash
229		* @param string $id
230		* page or media id
231		* @return boolean true when succesful
232		*/
233		private function _addToIndex($geohash, $id) {
234		$pageIds = array();
235		// check index for key/geohash
236		if (!array_key_exists($geohash, $this->spatial_idx)) {
237		dbglog("Geohash $geohash not in index, just add $id.");
238		$pageIds [] = $id;
239		} else {
240		dbglog('Geohash for document is in index, find it.');
241		// check the index for document
242		$knownHashes = $this->findHashesForId($id, $this->spatial_idx);
243		if (empty ($knownHashes)) {
244		dbglog("No index record found for document $id, just add");
245		$pageIds = $this->spatial_idx [$geohash];
246		$pageIds [] = $id;
247		}
248		// TODO shortcut, need to make sure there is only one element, if not the index is corrupt
249		$knownHash = $knownHashes [0];
250
251		if ($knownHash == $geohash) {
252		dbglog("Document $id was found in index and has the same geohash, nothing to do.");
253		return true;
254		}
255
256		if (!empty ($knownHash)) {
257		dbglog("Document/media $id was found in index but has different geohash (it moved).");
258		$knownIds = $this->spatial_idx [$knownHash];
259		dbglog($knownIds, "Known id's for this hash:");
260		// remove it from the old geohash element
261		$i = array_search($id, $knownIds);
262		dbglog('Unsetting:' . $knownIds [$i]);
263		unset ($knownIds [$i]);
264		$this->spatial_idx [$knownHash] = $knownIds;
265		// set on new geohash element
266		$pageIds = $this->spatial_idx [$geohash];
267		$pageIds [] = $id;
268		}
269		}
270		// store and save
271		$this->spatial_idx [$geohash] = $pageIds;
272		return $this->_saveIndex();
273		}
274
275		/**
276		* convert DegreesMinutesSeconds to Decimal degrees.
277		*
278		* @param array $param array of rational DMS
279		* @return number
280		*/
281		public function convertDMStoD($param) {
282		if (!is_array($param)) {
283		$param = array($param);
284		}
285		$deg = $this->_convertRationaltoFloat($param [0]);
286		$min = $this->_convertRationaltoFloat($param [1]) / 60;
287		$sec = $this->_convertRationaltoFloat($param [2]) / 60 / 60;
288		// Hemisphere (N, S, W or E)
289		$hem = ($param [3] === 'N' \|\| $param [3] === 'E') ? 1 : -1;
290		return $hem * ($deg + $min + $sec);
291		}
292
293		private function _convertRationaltoFloat($param) {
294		// rational64u
295		$nums = explode('/', $param);
296		if (intval($nums[1]) > 0) {
297		return intval($nums[0]) / intval($nums[1]);
298		} else {
299		return intval($nums[0]);
300		}
301		}
302		}
303

mprins / dokuwiki-plugin-spatialhelper

Pull Request — master (#11)

_convertRationaltoFloat() A

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