xref: /webtrees/app/GedcomRecord.php (revision e8e7866be1a6002e498a9d6b7d1257c59d7e3484)
1<?php
2namespace Fisharebest\Webtrees;
3
4/**
5 * webtrees: online genealogy
6 * Copyright (C) 2015 webtrees development team
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19/**
20 * Class GedcomRecord - Base class for all gedcom records
21 */
22class GedcomRecord {
23	const RECORD_TYPE = 'UNKNOWN';
24	const URL_PREFIX  = 'gedrecord.php?pid=';
25
26	/** @var string The record identifier */
27	protected $xref;
28
29	/** @var Tree  The family tree to which this record belongs */
30	protected $tree;
31
32	/** @var string  GEDCOM data (before any pending edits) */
33	protected $gedcom;
34
35	/** @var string|null  GEDCOM data (after any pending edits) */
36	protected $pending;
37
38	/** @var Fact[] facts extracted from $gedcom/$pending */
39	protected $facts;
40
41	/** @var bool Can we display details of this record to Auth::PRIV_PRIVATE */
42	private $disp_public;
43
44	/** @var bool Can we display details of this record to Auth::PRIV_USER */
45	private $disp_user;
46
47	/** @var bool Can we display details of this record to Auth::PRIV_NONE */
48	private $disp_none;
49
50	/** @var string[][] All the names of this individual */
51	protected $_getAllNames;
52
53	/** @var int Cached result */
54	protected $_getPrimaryName;
55
56	/** @var int Cached result */
57	protected $_getSecondaryName;
58
59	// Allow getInstance() to return references to existing objects
60	protected static $gedcom_record_cache;
61
62	// Fetch all pending edits in one database query
63	private static $pending_record_cache;
64
65	/**
66	 * Create a GedcomRecord object from raw GEDCOM data.
67	 *
68	 * @param string      $xref
69	 * @param string      $gedcom  an empty string for new/pending records
70	 * @param string|null $pending null for a record with no pending edits,
71	 *                             empty string for records with pending deletions
72	 * @param Tree        $tree
73	 */
74	public function __construct($xref, $gedcom, $pending, $tree) {
75		$this->xref    = $xref;
76		$this->gedcom  = $gedcom;
77		$this->pending = $pending;
78		$this->tree    = $tree;
79
80		$this->parseFacts();
81	}
82
83	/**
84	 * Split the record into facts
85	 */
86	private function parseFacts() {
87		// Split the record into facts
88		if ($this->gedcom) {
89			$gedcom_facts = preg_split('/\n(?=1)/s', $this->gedcom);
90			array_shift($gedcom_facts);
91		} else {
92			$gedcom_facts = array();
93		}
94		if ($this->pending) {
95			$pending_facts = preg_split('/\n(?=1)/s', $this->pending);
96			array_shift($pending_facts);
97		} else {
98			$pending_facts = array();
99		}
100
101		$this->facts = array();
102
103		foreach ($gedcom_facts as $gedcom_fact) {
104			$fact = new Fact($gedcom_fact, $this, md5($gedcom_fact));
105			if ($this->pending !== null && !in_array($gedcom_fact, $pending_facts)) {
106				$fact->setPendingDeletion();
107			}
108			$this->facts[] = $fact;
109		}
110		foreach ($pending_facts as $pending_fact) {
111			if (!in_array($pending_fact, $gedcom_facts)) {
112				$fact = new Fact($pending_fact, $this, md5($pending_fact));
113				$fact->setPendingAddition();
114				$this->facts[] = $fact;
115			}
116		}
117	}
118
119	/**
120	 * Get an instance of a GedcomRecord object.  For single records,
121	 * we just receive the XREF.  For bulk records (such as lists
122	 * and search results) we can receive the GEDCOM data as well.
123	 *
124	 * @param string      $xref
125	 * @param Tree        $tree
126	 * @param string|null $gedcom
127	 *
128	 * @throws \Exception
129	 *
130	 * @return GedcomRecord|null
131	 */
132	public static function getInstance($xref, Tree $tree, $gedcom = null) {
133		$tree_id = $tree->getTreeId();
134
135		// Is this record already in the cache, and of the correct type?
136		if (isset(self::$gedcom_record_cache[$xref][$tree_id])) {
137			$record = self::$gedcom_record_cache[$xref][$tree_id];
138
139			if ($record instanceof static) {
140				return $record;
141			} else {
142				null;
143			}
144		}
145
146		// Do we need to fetch the record from the database?
147		if ($gedcom === null) {
148			$gedcom = static::fetchGedcomRecord($xref, $tree_id);
149		}
150
151		// If we can edit, then we also need to be able to see pending records.
152		if (Auth::isEditor($tree)) {
153			if (!isset(self::$pending_record_cache[$tree_id])) {
154				// Fetch all pending records in one database query
155				self::$pending_record_cache[$tree_id] = array();
156				$rows                                 = Database::prepare(
157					"SELECT xref, new_gedcom FROM `##change` WHERE status = 'pending' AND gedcom_id = :tree_id ORDER BY change_id"
158				)->execute(array(
159					'tree_id' => $tree_id,
160				))->fetchAll();
161				foreach ($rows as $row) {
162					self::$pending_record_cache[$tree_id][$row->xref] = $row->new_gedcom;
163				}
164			}
165
166			if (isset(self::$pending_record_cache[$tree_id][$xref])) {
167				// A pending edit exists for this record
168				$pending = self::$pending_record_cache[$tree_id][$xref];
169			} else {
170				$pending = null;
171			}
172		} else {
173			// There are no pending changes for this record
174			$pending = null;
175		}
176
177		// No such record exists
178		if ($gedcom === null && $pending === null) {
179			return null;
180		}
181
182		// Create the object
183		if (preg_match('/^0 @(' . WT_REGEX_XREF . ')@ (' . WT_REGEX_TAG . ')/', $gedcom . $pending, $match)) {
184			$xref = $match[1]; // Collation - we may have requested I123 and found i123
185			$type = $match[2];
186		} elseif (preg_match('/^0 (HEAD|TRLR)/', $gedcom . $pending, $match)) {
187			$xref = $match[1];
188			$type = $match[1];
189		} elseif ($gedcom . $pending) {
190			throw new \Exception('Unrecognized GEDCOM record: ' . $gedcom);
191		} else {
192			// A record with both pending creation and pending deletion
193			$type = static::RECORD_TYPE;
194		}
195
196		switch ($type) {
197		case 'INDI':
198			$record = new Individual($xref, $gedcom, $pending, $tree);
199			break;
200		case 'FAM':
201			$record = new Family($xref, $gedcom, $pending, $tree);
202			break;
203		case 'SOUR':
204			$record = new Source($xref, $gedcom, $pending, $tree);
205			break;
206		case 'OBJE':
207			$record = new Media($xref, $gedcom, $pending, $tree);
208			break;
209		case 'REPO':
210			$record = new Repository($xref, $gedcom, $pending, $tree);
211			break;
212		case 'NOTE':
213			$record = new Note($xref, $gedcom, $pending, $tree);
214			break;
215		default:
216			$record = new self($xref, $gedcom, $pending, $tree);
217			break;
218		}
219
220		// Store it in the cache
221		self::$gedcom_record_cache[$xref][$tree_id] = $record;
222
223		return $record;
224	}
225
226	/**
227	 * Fetch data from the database
228	 *
229	 * @param string $xref
230	 * @param int    $tree_id
231	 *
232	 * @return null|string
233	 */
234	protected static function fetchGedcomRecord($xref, $tree_id) {
235		// We don't know what type of object this is.  Try each one in turn.
236		$data = Individual::fetchGedcomRecord($xref, $tree_id);
237		if ($data) {
238			return $data;
239		}
240		$data = Family::fetchGedcomRecord($xref, $tree_id);
241		if ($data) {
242			return $data;
243		}
244		$data = Source::fetchGedcomRecord($xref, $tree_id);
245		if ($data) {
246			return $data;
247		}
248		$data = Repository::fetchGedcomRecord($xref, $tree_id);
249		if ($data) {
250			return $data;
251		}
252		$data = Media::fetchGedcomRecord($xref, $tree_id);
253		if ($data) {
254			return $data;
255		}
256		$data = Note::fetchGedcomRecord($xref, $tree_id);
257		if ($data) {
258			return $data;
259		}
260		// Some other type of record...
261
262		return Database::prepare(
263			"SELECT o_gedcom FROM `##other` WHERE o_id = :xref AND o_file = :tree_id"
264		)->execute(array(
265			'xref'    => $xref,
266			'tree_id' => $tree_id,
267		))->fetchOne();
268	}
269
270	/**
271	 * Get the XREF for this record
272	 *
273	 * @return string
274	 */
275	public function getXref() {
276		return $this->xref;
277	}
278
279	/**
280	 * Get the tree to which this record belongs
281	 *
282	 * @return Tree
283	 */
284	public function getTree() {
285		return $this->tree;
286	}
287
288	/**
289	 * Application code should access data via Fact objects.
290	 * This function exists to support old code.
291	 *
292	 * @return string
293	 */
294	public function getGedcom() {
295		if ($this->pending === null) {
296			return $this->gedcom;
297		} else {
298			return $this->pending;
299		}
300	}
301
302	/**
303	 * Does this record have a pending change?
304	 *
305	 * @return bool
306	 */
307	public function isPendingAddtion() {
308		return $this->pending !== null;
309	}
310
311	/**
312	 * Does this record have a pending deletion?
313	 *
314	 * @return bool
315	 */
316	public function isPendingDeletion() {
317		return $this->pending === '';
318	}
319
320	/**
321	 * Generate a URL to this record, suitable for use in HTML, etc.
322	 *
323	 * @return string
324	 */
325	public function getHtmlUrl() {
326		return $this->getLinkUrl(static::URL_PREFIX, '&amp;');
327	}
328
329	/**
330	 * Generate a URL to this record, suitable for use in javascript, HTTP headers, etc.
331	 *
332	 * @return string
333	 */
334	public function getRawUrl() {
335		return $this->getLinkUrl(static::URL_PREFIX, '&');
336	}
337
338	/**
339	 * Generate an absolute URL for this record, suitable for sitemap.xml, RSS feeds, etc.
340	 *
341	 * @return string
342	 */
343	public function getAbsoluteLinkUrl() {
344		return WT_BASE_URL . $this->getHtmlUrl();
345	}
346
347	/**
348	 * Generate a URL to this record.
349	 *
350	 * @param string $link
351	 * @param string $separator
352	 *
353	 * @return string
354	 */
355	private function getLinkUrl($link, $separator) {
356		return $link . $this->getXref() . $separator . 'ged=' . $this->tree->getNameUrl();
357	}
358
359	/**
360	 * Work out whether this record can be shown to a user with a given access level
361	 *
362	 * @param int $access_level
363	 *
364	 * @return bool
365	 */
366	private function canShowRecord($access_level) {
367		// This setting would better be called "$ENABLE_PRIVACY"
368		if (!$this->tree->getPreference('HIDE_LIVE_PEOPLE')) {
369			return true;
370		}
371
372		// We should always be able to see our own record (unless an admin is applying download restrictions)
373		if ($this->getXref() === $this->tree->getUserPreference(Auth::user(), 'gedcomid') && $access_level === Auth::accessLevel($this->tree)) {
374			return true;
375		}
376
377		// Does this record have a RESN?
378		if (strpos($this->gedcom, "\n1 RESN confidential")) {
379			return Auth::PRIV_NONE >= $access_level;
380		}
381		if (strpos($this->gedcom, "\n1 RESN privacy")) {
382			return Auth::PRIV_USER >= $access_level;
383		}
384		if (strpos($this->gedcom, "\n1 RESN none")) {
385			return true;
386		}
387
388		// Does this record have a default RESN?
389		$individual_privacy = $this->tree->getIndividualPrivacy();
390		if (isset($individual_privacy[$this->getXref()])) {
391			return $individual_privacy[$this->getXref()] >= $access_level;
392		}
393
394		// Privacy rules do not apply to admins
395		if (Auth::PRIV_NONE >= $access_level) {
396			return true;
397		}
398
399		// Different types of record have different privacy rules
400		return $this->canShowByType($access_level);
401	}
402
403	/**
404	 * Each object type may have its own special rules, and re-implement this function.
405	 *
406	 * @param int $access_level
407	 *
408	 * @return bool
409	 */
410	protected function canShowByType($access_level) {
411		$fact_privacy = $this->tree->getFactPrivacy();
412
413		if (isset($fact_privacy[static::RECORD_TYPE])) {
414			// Restriction found
415			return $fact_privacy[static::RECORD_TYPE] >= $access_level;
416		} else {
417			// No restriction found - must be public:
418			return true;
419		}
420	}
421
422	/**
423	 * Can the details of this record be shown?
424	 *
425	 * @param int|null $access_level
426	 *
427	 * @return bool
428	 */
429	public function canShow($access_level = null) {
430		if ($access_level === null) {
431			$access_level = Auth::accessLevel($this->tree);
432		}
433
434// CACHING: this function can take three different parameters,
435		// and therefore needs three different caches for the result.
436		switch ($access_level) {
437		case Auth::PRIV_PRIVATE: // visitor
438			if ($this->disp_public === null) {
439				$this->disp_public = $this->canShowRecord(Auth::PRIV_PRIVATE);
440			}
441
442			return $this->disp_public;
443		case Auth::PRIV_USER: // member
444			if ($this->disp_user === null) {
445				$this->disp_user = $this->canShowRecord(Auth::PRIV_USER);
446			}
447
448			return $this->disp_user;
449		case Auth::PRIV_NONE: // admin
450			if ($this->disp_none === null) {
451				$this->disp_none = $this->canShowRecord(Auth::PRIV_NONE);
452			}
453
454			return $this->disp_none;
455		case Auth::PRIV_HIDE: // hidden from admins
456			// We use this value to bypass privacy checks.  For example,
457			// when downloading data or when calculating privacy itself.
458			return true;
459		default:
460			// Should never get here.
461			return false;
462		}
463	}
464
465	/**
466	 * Can the name of this record be shown?
467	 *
468	 * @param int|null $access_level
469	 *
470	 * @return bool
471	 */
472	public function canShowName($access_level = null) {
473		if ($access_level === null) {
474			$access_level = Auth::accessLevel($this->tree);
475		}
476
477		return $this->canShow($access_level);
478	}
479
480	/**
481	 * Can we edit this record?
482	 *
483	 * @return bool
484	 */
485	public function canEdit() {
486		return Auth::isManager($this->tree) || Auth::isEditor($this->tree) && strpos($this->gedcom, "\n1 RESN locked") === false;
487	}
488
489	/**
490	 * Remove private data from the raw gedcom record.
491	 * Return both the visible and invisible data.  We need the invisible data when editing.
492	 *
493	 * @param int $access_level
494	 *
495	 * @return string
496	 */
497	public function privatizeGedcom($access_level) {
498		if ($access_level == Auth::PRIV_HIDE) {
499			// We may need the original record, for example when downloading a GEDCOM or clippings cart
500			return $this->gedcom;
501		} elseif ($this->canShow($access_level)) {
502			// The record is not private, but the individual facts may be.
503
504			// Include the entire first line (for NOTE records)
505			list($gedrec) = explode("\n", $this->gedcom, 2);
506
507			// Check each of the facts for access
508			foreach ($this->getFacts(null, false, $access_level) as $fact) {
509				$gedrec .= "\n" . $fact->getGedcom();
510			}
511
512			return $gedrec;
513		} else {
514			// We cannot display the details, but we may be able to display
515			// limited data, such as links to other records.
516			return $this->createPrivateGedcomRecord($access_level);
517		}
518	}
519
520	/**
521	 * Generate a private version of this record
522	 *
523	 * @param int $access_level
524	 *
525	 * @return string
526	 */
527	protected function createPrivateGedcomRecord($access_level) {
528		return '0 @' . $this->xref . '@ ' . static::RECORD_TYPE . "\n1 NOTE " . I18N::translate('Private');
529	}
530
531	/**
532	 * Convert a name record into sortable and full/display versions.  This default
533	 * should be OK for simple record types.  INDI/FAM records will need to redefine it.
534	 *
535	 * @param string $type
536	 * @param string $value
537	 * @param string $gedcom
538	 */
539	protected function addName($type, $value, $gedcom) {
540		$this->_getAllNames[] = array(
541			'type'   => $type,
542			'sort'   => preg_replace_callback('/([0-9]+)/', function ($matches) { return str_pad($matches[0], 10, '0', STR_PAD_LEFT); }, $value),
543			'full'   => '<span dir="auto">' . Filter::escapeHtml($value) . '</span>', // This is used for display
544			'fullNN' => $value, // This goes into the database
545		);
546	}
547
548	/**
549	 * Get all the names of a record, including ROMN, FONE and _HEB alternatives.
550	 * Records without a name (e.g. FAM) will need to redefine this function.
551	 * Parameters: the level 1 fact containing the name.
552	 * Return value: an array of name structures, each containing
553	 * ['type'] = the gedcom fact, e.g. NAME, TITL, FONE, _HEB, etc.
554	 * ['full'] = the name as specified in the record, e.g. 'Vincent van Gogh' or 'John Unknown'
555	 * ['sort'] = a sortable version of the name (not for display), e.g. 'Gogh, Vincent' or '@N.N., John'
556	 *
557	 * @param int    $level
558	 * @param string $fact_type
559	 * @param Fact[] $facts
560	 */
561	protected function extractNamesFromFacts($level, $fact_type, $facts) {
562		$sublevel    = $level + 1;
563		$subsublevel = $sublevel + 1;
564		foreach ($facts as $fact) {
565			if (preg_match_all("/^{$level} ({$fact_type}) (.+)((\n[{$sublevel}-9].+)*)/m", $fact->getGedcom(), $matches, PREG_SET_ORDER)) {
566				foreach ($matches as $match) {
567					// Treat 1 NAME / 2 TYPE married the same as _MARNM
568					if ($match[1] == 'NAME' && strpos($match[3], "\n2 TYPE married") !== false) {
569						$this->addName('_MARNM', $match[2], $fact->getGedcom());
570					} else {
571						$this->addName($match[1], $match[2], $fact->getGedcom());
572					}
573					if ($match[3] && preg_match_all("/^{$sublevel} (ROMN|FONE|_\w+) (.+)((\n[{$subsublevel}-9].+)*)/m", $match[3], $submatches, PREG_SET_ORDER)) {
574						foreach ($submatches as $submatch) {
575							$this->addName($submatch[1], $submatch[2], $match[3]);
576						}
577					}
578				}
579			}
580		}
581	}
582
583	/**
584	 * Default for "other" object types
585	 */
586	public function extractNames() {
587		$this->addName(static::RECORD_TYPE, $this->getFallBackName(), null);
588	}
589
590	/**
591	 * Derived classes should redefine this function, otherwise the object will have no name
592	 *
593	 * @return string[][]
594	 */
595	public function getAllNames() {
596		if ($this->_getAllNames === null) {
597			$this->_getAllNames = array();
598			if ($this->canShowName()) {
599				// Ask the record to extract its names
600				$this->extractNames();
601				// No name found?  Use a fallback.
602				if (!$this->_getAllNames) {
603					$this->addName(static::RECORD_TYPE, $this->getFallBackName(), null);
604				}
605			} else {
606				$this->addName(static::RECORD_TYPE, I18N::translate('Private'), null);
607			}
608		}
609
610		return $this->_getAllNames;
611	}
612
613	/**
614	 * If this object has no name, what do we call it?
615	 *
616	 * @return string
617	 */
618	public function getFallBackName() {
619		return $this->getXref();
620	}
621
622	/**
623	 * Which of the (possibly several) names of this record is the primary one.
624	 *
625	 * @return int
626	 */
627	public function getPrimaryName() {
628		static $language_script;
629
630		if ($language_script === null) {
631			$language_script = I18N::languageScript(WT_LOCALE);
632		}
633
634		if ($this->_getPrimaryName === null) {
635			// Generally, the first name is the primary one....
636			$this->_getPrimaryName = 0;
637			// ...except when the language/name use different character sets
638			if (count($this->getAllNames()) > 1) {
639				foreach ($this->getAllNames() as $n => $name) {
640					if ($name['type'] !== '_MARNM' && I18N::textScript($name['sort']) === $language_script) {
641						$this->_getPrimaryName = $n;
642						break;
643					}
644				}
645			}
646		}
647
648		return $this->_getPrimaryName;
649	}
650
651	/**
652	 * Which of the (possibly several) names of this record is the secondary one.
653	 *
654	 * @return int
655	 */
656	public function getSecondaryName() {
657		if (is_null($this->_getSecondaryName)) {
658			// Generally, the primary and secondary names are the same
659			$this->_getSecondaryName = $this->getPrimaryName();
660			// ....except when there are names with different character sets
661			$all_names = $this->getAllNames();
662			if (count($all_names) > 1) {
663				$primary_script = I18N::textScript($all_names[$this->getPrimaryName()]['sort']);
664				foreach ($all_names as $n => $name) {
665					if ($n != $this->getPrimaryName() && $name['type'] != '_MARNM' && I18N::textScript($name['sort']) != $primary_script) {
666						$this->_getSecondaryName = $n;
667						break;
668					}
669				}
670			}
671		}
672
673		return $this->_getSecondaryName;
674	}
675
676	/**
677	 * Allow the choice of primary name to be overidden, e.g. in a search result
678	 *
679	 * @param int $n
680	 */
681	public function setPrimaryName($n) {
682		$this->_getPrimaryName   = $n;
683		$this->_getSecondaryName = null;
684	}
685
686	/**
687	 * Allow native PHP functions such as array_unique() to work with objects
688	 *
689	 * @return string
690	 */
691	public function __toString() {
692		return $this->xref . '@' . $this->tree->getTreeId();
693	}
694
695	/**
696	 * Static helper function to sort an array of objects by name
697	 * Records whose names cannot be displayed are sorted at the end.
698	 *
699	 * @param GedcomRecord $x
700	 * @param GedcomRecord $y
701	 *
702	 * @return int
703	 */
704	public static function compare(GedcomRecord $x, GedcomRecord $y) {
705		if ($x->canShowName()) {
706			if ($y->canShowName()) {
707				return I18N::strcasecmp($x->getSortName(), $y->getSortName());
708			} else {
709				return -1; // only $y is private
710			}
711		} else {
712			if ($y->canShowName()) {
713				return 1; // only $x is private
714			} else {
715				return 0; // both $x and $y private
716			}
717		}
718	}
719
720	/**
721	 * Get variants of the name
722	 *
723	 * @return string
724	 */
725	public function getFullName() {
726		if ($this->canShowName()) {
727			$tmp = $this->getAllNames();
728
729			return $tmp[$this->getPrimaryName()]['full'];
730		} else {
731			return I18N::translate('Private');
732		}
733	}
734
735	/**
736	 * Get a sortable version of the name.  Do not display this!
737	 *
738	 * @return string
739	 */
740	public function getSortName() {
741		// The sortable name is never displayed, no need to call canShowName()
742		$tmp = $this->getAllNames();
743
744		return $tmp[$this->getPrimaryName()]['sort'];
745	}
746
747	/**
748	 * Get the full name in an alternative character set
749	 *
750	 * @return null|string
751	 */
752	public function getAddName() {
753		if ($this->canShowName() && $this->getPrimaryName() != $this->getSecondaryName()) {
754			$all_names = $this->getAllNames();
755
756			return $all_names[$this->getSecondaryName()]['full'];
757		} else {
758			return null;
759		}
760	}
761
762	/**
763	 * Format this object for display in a list
764	 * If $find is set, then we are displaying items from a selection list.
765	 * $name allows us to use something other than the record name.
766	 *
767	 * @param string $tag
768	 * @param bool   $find
769	 * @param null   $name
770	 *
771	 * @return string
772	 */
773	public function formatList($tag = 'li', $find = false, $name = null) {
774		if (is_null($name)) {
775			$name = $this->getFullName();
776		}
777		$html = '<a href="' . $this->getHtmlUrl() . '"';
778		if ($find) {
779			$html .= ' onclick="pasteid(\'' . $this->getXref() . '\', \'' . htmlentities($name) . '\');"';
780		}
781		$html .= ' class="list_item"><b>' . $name . '</b>';
782		$html .= $this->formatListDetails();
783		$html = '<' . $tag . '>' . $html . '</a></' . $tag . '>';
784
785		return $html;
786	}
787
788	/**
789	 * This function should be redefined in derived classes to show any major
790	 * identifying characteristics of this record.
791	 *
792	 * @return string
793	 */
794	public function formatListDetails() {
795		return '';
796	}
797
798	/**
799	 * Extract/format the first fact from a list of facts.
800	 *
801	 * @param string $facts
802	 * @param int    $style
803	 *
804	 * @return string
805	 */
806	public function formatFirstMajorFact($facts, $style) {
807		foreach ($this->getFacts($facts, true) as $event) {
808			// Only display if it has a date or place (or both)
809			if ($event->getDate()->isOK() || !$event->getPlace()->isEmpty()) {
810				switch ($style) {
811				case 1:
812					return '<br><em>' . $event->getLabel() . ' ' . format_fact_date($event, $this, false, false) . ' ' . format_fact_place($event) . '</em>';
813				case 2:
814					return '<dl><dt class="label">' . $event->getLabel() . '</dt><dd class="field">' . format_fact_date($event, $this, false, false) . ' ' . format_fact_place($event) . '</dd></dl>';
815				}
816			}
817		}
818
819		return '';
820	}
821
822	/**
823	 * Find individuals linked to this record.
824	 *
825	 * @param string $link
826	 *
827	 * @return Individual[]
828	 */
829	public function linkedIndividuals($link) {
830		$rows = Database::prepare(
831			"SELECT i_id AS xref, i_gedcom AS gedcom" .
832			" FROM `##individuals`" .
833			" JOIN `##link` ON i_file = l_file AND i_id = l_from" .
834			" LEFT JOIN `##name` ON i_file = n_file AND i_id = n_id AND n_num = 0" .
835			" WHERE i_file = :tree_id AND l_type = :link AND l_to = :xref" .
836			" ORDER BY n_sort COLLATE :collation"
837		)->execute(array(
838			'tree_id'   => $this->tree->getTreeId(),
839			'link'      => $link,
840			'xref'      => $this->xref,
841			'collation' => I18N::collation(),
842		))->fetchAll();
843
844		$list = array();
845		foreach ($rows as $row) {
846			$record = Individual::getInstance($row->xref, $this->tree, $row->gedcom);
847			if ($record->canShowName()) {
848				$list[] = $record;
849			}
850		}
851
852		return $list;
853	}
854
855	/**
856	 * Find families linked to this record.
857	 *
858	 * @param string $link
859	 *
860	 * @return Family[]
861	 */
862	public function linkedFamilies($link) {
863		$rows = Database::prepare(
864			"SELECT f_id AS xref, f_gedcom AS gedcom" .
865			" FROM `##families`" .
866			" JOIN `##link` ON f_file = l_file AND f_id = l_from" .
867			" LEFT JOIN `##name` ON f_file = n_file AND f_id = n_id AND n_num = 0" .
868			" WHERE f_file = :tree_id AND l_type = :link AND l_to = :xref"
869		)->execute(array(
870			'tree_id' => $this->tree->getTreeId(),
871			'link'    => $link,
872			'xref'    => $this->xref,
873		))->fetchAll();
874
875		$list = array();
876		foreach ($rows as $row) {
877			$record = Family::getInstance($row->xref, $this->tree, $row->gedcom);
878			if ($record->canShowName()) {
879				$list[] = $record;
880			}
881		}
882
883		return $list;
884	}
885
886	/**
887	 * Find sources linked to this record.
888	 *
889	 * @param string $link
890	 *
891	 * @return Source[]
892	 */
893	public function linkedSources($link) {
894		$rows = Database::prepare(
895			"SELECT s_id AS xref, s_gedcom AS gedcom" .
896			" FROM `##sources`" .
897			" JOIN `##link` ON s_file = l_file AND s_id = l_from" .
898			" WHERE s_file = :tree_id AND l_type = :link AND l_to = :xref" .
899			" ORDER BY s_name COLLATE :collation"
900		)->execute(array(
901			'tree_id'   => $this->tree->getTreeId(),
902			'link'      => $link,
903			'xref'      => $this->xref,
904			'collation' => I18N::collation(),
905		))->fetchAll();
906
907		$list = array();
908		foreach ($rows as $row) {
909			$record = Source::getInstance($row->xref, $this->tree, $row->gedcom);
910			if ($record->canShowName()) {
911				$list[] = $record;
912			}
913		}
914
915		return $list;
916	}
917
918	/**
919	 * Find media objects linked to this record.
920	 *
921	 * @param string $link
922	 *
923	 * @return Media[]
924	 */
925	public function linkedMedia($link) {
926		$rows = Database::prepare(
927			"SELECT m_id AS xref, m_gedcom AS gedcom" .
928			" FROM `##media`" .
929			" JOIN `##link` ON m_file = l_file AND m_id = l_from" .
930			" WHERE m_file = :tree_id AND l_type = :link AND l_to = :xref" .
931			" ORDER BY m_titl COLLATE :collation"
932		)->execute(array(
933			'tree_id'   => $this->tree->getTreeId(),
934			'link'      => $link,
935			'xref'      => $this->xref,
936			'collation' => I18N::collation(),
937		))->fetchAll();
938
939		$list = array();
940		foreach ($rows as $row) {
941			$record = Media::getInstance($row->xref, $this->tree, $row->gedcom);
942			if ($record->canShowName()) {
943				$list[] = $record;
944			}
945		}
946
947		return $list;
948	}
949
950	/**
951	 * Find notes linked to this record.
952	 *
953	 * @param string $link
954	 *
955	 * @return Note[]
956	 */
957	public function linkedNotes($link) {
958		$rows = Database::prepare(
959			"SELECT o_id AS xref, o_gedcom AS gedcom" .
960			" FROM `##other`" .
961			" JOIN `##link` ON o_file = l_file AND o_id = l_from" .
962			" LEFT JOIN `##name` ON o_file = n_file AND o_id = n_id AND n_num = 0" .
963			" WHERE o_file = :tree_id AND o_type = 'NOTE' AND l_type = :link AND l_to = :xref" .
964			" ORDER BY n_sort COLLATE :collation"
965		)->execute(array(
966			'tree_id'   => $this->tree->getTreeId(),
967			'link'      => $link,
968			'xref'      => $this->xref,
969			'collation' => I18N::collation(),
970		))->fetchAll();
971
972		$list = array();
973		foreach ($rows as $row) {
974			$record = Note::getInstance($row->xref, $this->tree, $row->gedcom);
975			if ($record->canShowName()) {
976				$list[] = $record;
977			}
978		}
979
980		return $list;
981	}
982
983	/**
984	 * Find repositories linked to this record.
985	 *
986	 * @param string $link
987	 *
988	 * @return Repository[]
989	 */
990	public function linkedRepositories($link) {
991		$rows = Database::prepare(
992			"SELECT o_id AS xref, o_gedcom AS gedcom" .
993			" FROM `##other`" .
994			" JOIN `##link` ON o_file = l_file AND o_id = l_from" .
995			" LEFT JOIN `##name` ON o_file = n_file AND o_id = n_id AND n_num = 0" .
996			" WHERE o_file = :tree_id AND o_type = 'REPO' AND l_type = :link AND l_to = :xref" .
997			" ORDER BY n_sort COLLATE :collation"
998		)->execute(array(
999			'tree_id'   => $this->tree->getTreeId(),
1000			'link'      => $link,
1001			'xref'      => $this->xref,
1002			'collation' => I18N::collation(),
1003		))->fetchAll();
1004
1005		$list = array();
1006		foreach ($rows as $row) {
1007			$record = Repository::getInstance($row->xref, $this->tree, $row->gedcom);
1008			if ($record->canShowName()) {
1009				$list[] = $record;
1010			}
1011		}
1012
1013		return $list;
1014	}
1015
1016	/**
1017	 * Get all attributes (e.g. DATE or PLAC) from an event (e.g. BIRT or MARR).
1018	 * This is used to display multiple events on the individual/family lists.
1019	 * Multiple events can exist because of uncertainty in dates, dates in different
1020	 * calendars, place-names in both latin and hebrew character sets, etc.
1021	 * It also allows us to combine dates/places from different events in the summaries.
1022	 *
1023	 * @param string $event_type
1024	 *
1025	 * @return Date[]
1026	 */
1027	public function getAllEventDates($event_type) {
1028		$dates = array();
1029		foreach ($this->getFacts($event_type) as $event) {
1030			if ($event->getDate()->isOK()) {
1031				$dates[] = $event->getDate();
1032			}
1033		}
1034
1035		return $dates;
1036	}
1037
1038	/**
1039	 * Get all the places for a particular type of event
1040	 *
1041	 * @param string $event_type
1042	 *
1043	 * @return array
1044	 */
1045	public function getAllEventPlaces($event_type) {
1046		$places = array();
1047		foreach ($this->getFacts($event_type) as $event) {
1048			if (preg_match_all('/\n(?:2 PLAC|3 (?:ROMN|FONE|_HEB)) +(.+)/', $event->getGedcom(), $ged_places)) {
1049				foreach ($ged_places[1] as $ged_place) {
1050					$places[] = $ged_place;
1051				}
1052			}
1053		}
1054
1055		return $places;
1056	}
1057
1058	/**
1059	 * Get the first (i.e. prefered) Fact for the given fact type
1060	 *
1061	 * @param string $tag
1062	 *
1063	 * @return Fact|null
1064	 */
1065	public function getFirstFact($tag) {
1066		foreach ($this->getFacts() as $fact) {
1067			if ($fact->getTag() === $tag) {
1068				return $fact;
1069			}
1070		}
1071
1072		return null;
1073	}
1074
1075	/**
1076	 * The facts and events for this record.
1077	 *
1078	 * @param string    $filter
1079	 * @param bool      $sort
1080	 * @param int|null  $access_level
1081	 * @param bool      $override     Include private records, to allow us to implement $SHOW_PRIVATE_RELATIONSHIPS and $SHOW_LIVING_NAMES.
1082	 *
1083	 * @return Fact[]
1084	 */
1085	public function getFacts($filter = null, $sort = false, $access_level = null, $override = false) {
1086		if ($access_level === null) {
1087			$access_level = Auth::accessLevel($this->tree);
1088		}
1089
1090			$facts = array();
1091		if ($this->canShow($access_level) || $override) {
1092			foreach ($this->facts as $fact) {
1093				if (($filter == null || preg_match('/^' . $filter . '$/', $fact->getTag())) && $fact->canShow($access_level)) {
1094					$facts[] = $fact;
1095				}
1096			}
1097		}
1098		if ($sort) {
1099			sort_facts($facts);
1100		}
1101
1102		return $facts;
1103	}
1104
1105	/**
1106	 * Get the last-change timestamp for this record, either as a formatted string
1107	 * (for display) or as a unix timestamp (for sorting)
1108	 *
1109	 * @param bool $sorting
1110	 *
1111	 * @return string
1112	 */
1113	public function lastChangeTimestamp($sorting = false) {
1114		$chan = $this->getFirstFact('CHAN');
1115
1116		if ($chan) {
1117			// The record does have a CHAN event
1118			$d = $chan->getDate()->minimumDate();
1119			if (preg_match('/\n3 TIME (\d\d):(\d\d):(\d\d)/', $chan->getGedcom(), $match)) {
1120				$t = mktime((int) $match[1], (int) $match[2], (int) $match[3], (int) $d->format('%n'), (int) $d->format('%j'), (int) $d->format('%Y'));
1121			} elseif (preg_match('/\n3 TIME (\d\d):(\d\d)/', $chan->getGedcom(), $match)) {
1122				$t = mktime((int) $match[1], (int) $match[2], 0, (int) $d->format('%n'), (int) $d->format('%j'), (int) $d->format('%Y'));
1123			} else {
1124				$t = mktime(0, 0, 0, (int) $d->format('%n'), (int) $d->format('%j'), (int) $d->format('%Y'));
1125			}
1126			if ($sorting) {
1127				return $t;
1128			} else {
1129				return strip_tags(format_timestamp($t));
1130			}
1131		} else {
1132			// The record does not have a CHAN event
1133			if ($sorting) {
1134				return '0';
1135			} else {
1136				return '&nbsp;';
1137			}
1138		}
1139	}
1140
1141	/**
1142	 * Get the last-change user for this record
1143	 *
1144	 * @return string
1145	 */
1146	public function lastChangeUser() {
1147		$chan = $this->getFirstFact('CHAN');
1148
1149		if ($chan === null) {
1150			return I18N::translate('Unknown');
1151		} else {
1152			$chan_user = $chan->getAttribute('_WT_USER');
1153			if ($chan_user === null) {
1154				return I18N::translate('Unknown');
1155			} else {
1156				return $chan_user;
1157			}
1158		}
1159	}
1160
1161	/**
1162	 * Add a new fact to this record
1163	 *
1164	 * @param string $gedcom
1165	 * @param bool   $update_chan
1166	 */
1167	public function createFact($gedcom, $update_chan) {
1168		$this->updateFact(null, $gedcom, $update_chan);
1169	}
1170
1171	/**
1172	 * Delete a fact from this record
1173	 *
1174	 * @param string $fact_id
1175	 * @param bool   $update_chan
1176	 */
1177	public function deleteFact($fact_id, $update_chan) {
1178		$this->updateFact($fact_id, null, $update_chan);
1179	}
1180
1181	/**
1182	 * Replace a fact with a new gedcom data.
1183	 *
1184	 * @param string $fact_id
1185	 * @param string $gedcom
1186	 * @param bool   $update_chan
1187	 *
1188	 * @throws \Exception
1189	 */
1190	public function updateFact($fact_id, $gedcom, $update_chan) {
1191		// MSDOS line endings will break things in horrible ways
1192		$gedcom = preg_replace('/[\r\n]+/', "\n", $gedcom);
1193		$gedcom = trim($gedcom);
1194
1195		if ($this->pending === '') {
1196			throw new \Exception('Cannot edit a deleted record');
1197		}
1198		if ($gedcom && !preg_match('/^1 ' . WT_REGEX_TAG . '/', $gedcom)) {
1199			throw new \Exception('Invalid GEDCOM data passed to GedcomRecord::updateFact(' . $gedcom . ')');
1200		}
1201
1202		if ($this->pending) {
1203			$old_gedcom = $this->pending;
1204		} else {
1205			$old_gedcom = $this->gedcom;
1206		}
1207
1208		// First line of record may contain data - e.g. NOTE records.
1209		list($new_gedcom) = explode("\n", $old_gedcom, 2);
1210
1211		// Replacing (or deleting) an existing fact
1212		foreach ($this->getFacts(null, false, Auth::PRIV_HIDE) as $fact) {
1213			if (!$fact->isPendingDeletion()) {
1214				if ($fact->getFactId() === $fact_id) {
1215					if ($gedcom) {
1216						$new_gedcom .= "\n" . $gedcom;
1217					}
1218					$fact_id = true; // Only replace/delete one copy of a duplicate fact
1219				} elseif ($fact->getTag() != 'CHAN' || !$update_chan) {
1220					$new_gedcom .= "\n" . $fact->getGedcom();
1221				}
1222			}
1223		}
1224		if ($update_chan) {
1225			$new_gedcom .= "\n1 CHAN\n2 DATE " . date('d M Y') . "\n3 TIME " . date('H:i:s') . "\n2 _WT_USER " . Auth::user()->getUserName();
1226		}
1227
1228		// Adding a new fact
1229		if (!$fact_id) {
1230			$new_gedcom .= "\n" . $gedcom;
1231		}
1232
1233		if ($new_gedcom != $old_gedcom) {
1234			// Save the changes
1235			Database::prepare(
1236				"INSERT INTO `##change` (gedcom_id, xref, old_gedcom, new_gedcom, user_id) VALUES (?, ?, ?, ?, ?)"
1237			)->execute(array(
1238				$this->tree->getTreeId(),
1239				$this->xref,
1240				$old_gedcom,
1241				$new_gedcom,
1242				Auth::id(),
1243			));
1244
1245			$this->pending = $new_gedcom;
1246
1247			if (Auth::user()->getPreference('auto_accept')) {
1248				accept_all_changes($this->xref, $this->tree->getTreeId());
1249				$this->gedcom  = $new_gedcom;
1250				$this->pending = null;
1251			}
1252		}
1253		$this->parseFacts();
1254	}
1255
1256	/**
1257	 * Update this record
1258	 *
1259	 * @param string $gedcom
1260	 * @param bool   $update_chan
1261	 */
1262	public function updateRecord($gedcom, $update_chan) {
1263		// MSDOS line endings will break things in horrible ways
1264		$gedcom = preg_replace('/[\r\n]+/', "\n", $gedcom);
1265		$gedcom = trim($gedcom);
1266
1267		// Update the CHAN record
1268		if ($update_chan) {
1269			$gedcom = preg_replace('/\n1 CHAN(\n[2-9].*)*/', '', $gedcom);
1270			$gedcom .= "\n1 CHAN\n2 DATE " . date('d M Y') . "\n3 TIME " . date('H:i:s') . "\n2 _WT_USER " . Auth::user()->getUserName();
1271		}
1272
1273		// Create a pending change
1274		Database::prepare(
1275			"INSERT INTO `##change` (gedcom_id, xref, old_gedcom, new_gedcom, user_id) VALUES (?, ?, ?, ?, ?)"
1276		)->execute(array(
1277			$this->tree->getTreeId(),
1278			$this->xref,
1279			$this->getGedcom(),
1280			$gedcom,
1281			Auth::id(),
1282		));
1283
1284		// Clear the cache
1285		$this->pending = $gedcom;
1286
1287		// Accept this pending change
1288		if (Auth::user()->getPreference('auto_accept')) {
1289			accept_all_changes($this->xref, $this->tree->getTreeId());
1290			$this->gedcom  = $gedcom;
1291			$this->pending = null;
1292		}
1293
1294		$this->parseFacts();
1295
1296		Log::addEditLog('Update: ' . static::RECORD_TYPE . ' ' . $this->xref);
1297	}
1298
1299	/**
1300	 * Delete this record
1301	 */
1302	public function deleteRecord() {
1303		// Create a pending change
1304		Database::prepare(
1305			"INSERT INTO `##change` (gedcom_id, xref, old_gedcom, new_gedcom, user_id) VALUES (?, ?, ?, '', ?)"
1306		)->execute(array(
1307			$this->tree->getTreeId(),
1308			$this->xref,
1309			$this->getGedcom(),
1310			Auth::id(),
1311		));
1312
1313		// Accept this pending change
1314		if (Auth::user()->getPreference('auto_accept')) {
1315			accept_all_changes($this->xref, $this->tree->getTreeId());
1316		}
1317
1318		// Clear the cache
1319		self::$gedcom_record_cache  = null;
1320		self::$pending_record_cache = null;
1321
1322		Log::addEditLog('Delete: ' . static::RECORD_TYPE . ' ' . $this->xref);
1323	}
1324
1325	/**
1326	 * Remove all links from this record to $xref
1327	 *
1328	 * @param string $xref
1329	 * @param bool   $update_chan
1330	 */
1331	public function removeLinks($xref, $update_chan) {
1332		$value = '@' . $xref . '@';
1333
1334		foreach ($this->getFacts() as $fact) {
1335			if ($fact->getValue() == $value) {
1336				$this->deleteFact($fact->getFactId(), $update_chan);
1337			} elseif (preg_match_all('/\n(\d) ' . WT_REGEX_TAG . ' ' . $value . '/', $fact->getGedcom(), $matches, PREG_SET_ORDER)) {
1338				$gedcom = $fact->getGedcom();
1339				foreach ($matches as $match) {
1340					$next_level  = $match[1] + 1;
1341					$next_levels = '[' . $next_level . '-9]';
1342					$gedcom      = preg_replace('/' . $match[0] . '(\n' . $next_levels . '.*)*/', '', $gedcom);
1343				}
1344				$this->updateFact($fact->getFactId(), $gedcom, $update_chan);
1345			}
1346		}
1347	}
1348}
1349