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https://github.com/Piwigo/Piwigo.git
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- add files metadata support : use info for database fields
- distinction between directories synchronization and metadata synchronization git-svn-id: http://piwigo.org/svn/trunk@486 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
z0rglub
@@ -0,0 +1,363 @@
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<?php
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// +-----------------------------------------------------------------------+
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// | functions_metadata.php |
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// +-----------------------------------------------------------------------+
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// | application : PhpWebGallery <http://phpwebgallery.net> |
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// | branch : BSF (Best So Far) |
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// +-----------------------------------------------------------------------+
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// | file : $RCSfile$
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// | last update : $Date$
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// | last modifier : $Author$
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// | revision : $Revision$
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// +-----------------------------------------------------------------------+
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// | This program is free software; you can redistribute it and/or modify |
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// | it under the terms of the GNU General Public License as published by |
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// | the Free Software Foundation |
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// | |
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// | This program is distributed in the hope that it will be useful, but |
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// | WITHOUT ANY WARRANTY; without even the implied warranty of |
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// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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// | General Public License for more details. |
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// | |
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// | You should have received a copy of the GNU General Public License |
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// | along with this program; if not, write to the Free Software |
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// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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// | USA. |
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// +-----------------------------------------------------------------------+
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/**
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* returns informations from IPTC metadata, mapping is done at the beginning
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* of the function
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*
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* @param string $filename
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* @return array
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*/
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function get_iptc_data($filename)
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{
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global $getimagesize_time;
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$map = array(
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'keywords' => '2#025',
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'date_creation' => '2#055',
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'author' => '2#122',
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'name' => '2#085',
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'comment' => '2#120'
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);
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$datefields = array('date_creation', 'date_available');
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$result = array();
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// Read IPTC data
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$iptc = array();
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$start = get_moment();
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getimagesize($filename, &$imginfo);
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$getimagesize_time+= get_moment() - $start;
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if (is_array($imginfo) and isset($imginfo['APP13']))
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{
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$iptc = iptcparse($imginfo['APP13']);
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if (is_array($iptc))
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{
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$rmap = array_flip($map);
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foreach (array_keys($rmap) as $iptc_key)
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{
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if (isset($iptc[$iptc_key][0]) and $value = $iptc[$iptc_key][0])
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{
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// strip leading zeros (weird Kodak Scanner software)
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while ($value[0] == chr(0))
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{
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$value = substr($value, 1);
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}
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// remove binary nulls
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$value = str_replace(chr(0x00), ' ', $value);
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foreach (array_keys($map, $iptc_key) as $pwg_key)
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{
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if (in_array($pwg_key, $datefields))
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{
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if ( preg_match('/(\d{4})(\d{2})(\d{2})/', $value, $matches))
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{
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$value = $matches[1].'-'.$matches[2].'-'.$matches[3];
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}
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else
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{
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continue;
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}
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}
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$result[$pwg_key] = $value;
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}
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}
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}
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}
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}
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return $result;
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}
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function update_metadata($files)
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{
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global $conf;
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// $conf['use_iptc'] = true;
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// $conf['use_exif'] = true;
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$inserts = array();
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foreach ($files as $id => $file)
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{
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$insert = array();
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$insert['id'] = $id;
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$insert['filesize'] = floor(filesize($file)/1024);
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if ($image_size = @getimagesize($file))
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{
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$insert['width'] = $image_size[0];
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$insert['height'] = $image_size[1];
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}
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if ($conf['use_exif'])
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{
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if ($exif = @read_exif_data($file))
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{
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if (isset($exif['DateTime']))
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{
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preg_match('/^(\d{4}).(\d{2}).(\d{2})/'
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,$exif['DateTime']
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,$matches);
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$insert['date_creation'] =
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"'".$matches[1].'-'.$matches[2].'-'.$matches[3]."'";
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}
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}
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}
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if ($conf['use_iptc'])
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{
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$iptc = get_iptc_data($file);
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foreach (array_keys($iptc) as $key)
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{
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$insert[$key] = "'".addslashes($iptc[$key])."'";
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}
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}
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$insert['date_metadata_update'] = CURRENT_DATE;
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array_push($inserts, $insert);
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}
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if (count($inserts) > 0)
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{
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$dbfields = array(
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'id','filesize','width','height','name','author','comment'
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,'date_creation','keywords','date_metadata_update'
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);
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// depending on the MySQL version, we use the multi table update or N
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// update queries
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$query = 'SELECT VERSION() AS version;';
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$row = mysql_fetch_array(mysql_query($query));
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if (version_compare($row['version'],'4.0.4') < 0)
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{
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// MySQL is prior to version 4.0.4, multi table update feature is not
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// available
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echo 'MySQL is prior to version 4.0.4, multi table update feature is not available<br />';
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foreach ($inserts as $insert)
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{
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$query = '
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UPDATE '.IMAGES_TABLE.'
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SET ';
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foreach (array_diff(array_keys($insert),array('id')) as $num => $key)
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{
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if ($num > 1)
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{
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$query.= ', ';
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}
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$query.= $key.' = '.$insert[$key];
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}
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$query.= '
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WHERE id = '.$insert['id'].'
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;';
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// echo '<pre>'.$query.'</pre>';
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mysql_query($query);
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}
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}
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else
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{
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// creation of the temporary table
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$query = '
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DESCRIBE '.IMAGES_TABLE.'
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;';
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$result = mysql_query($query);
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$columns = array();
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while ($row = mysql_fetch_array($result))
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{
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if (in_array($row['Field'], $dbfields))
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{
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$column = $row['Field'];
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$column.= ' '.$row['Type'];
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if (!isset($row['Null']) or $row['Null'] == '')
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{
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$column.= ' NOT NULL';
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}
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if (isset($row['Default']))
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{
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$column.= " default '".$row['Default']."'";
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}
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array_push($columns, $column);
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}
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}
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$query = '
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CREATE TEMPORARY TABLE '.IMAGE_METADATA_TABLE.'
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(
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'.implode(",\n", $columns).',
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PRIMARY KEY (id)
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)
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;';
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// echo '<pre>'.$query.'</pre>';
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mysql_query($query);
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// inserts all found pictures
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$query = '
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INSERT INTO '.IMAGE_METADATA_TABLE.'
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('.implode(',', $dbfields).')
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VALUES
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';
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foreach ($inserts as $insert_id => $insert)
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{
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$query.= '
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';
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if ($insert_id > 0)
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{
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$query.= ',';
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}
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$query.= '(';
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foreach ($dbfields as $field_id => $dbfield)
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{
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if ($field_id > 0)
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{
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$query.= ',';
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}
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if (!isset($insert[$dbfield]) or $insert[$dbfield] == '')
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{
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$query.= 'NULL';
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}
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else
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{
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$query.= $insert[$dbfield];
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}
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}
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$query.=')';
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}
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$query.= '
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;';
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// echo '<pre>'.$query.'</pre>';
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mysql_query($query);
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// update of images table by joining with temporary table
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$query = '
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UPDATE '.IMAGES_TABLE.' AS images, '.IMAGE_METADATA_TABLE.' as metadata
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SET '.implode("\n , ",
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array_map(
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create_function('$s', 'return "images.$s = metadata.$s";')
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, array_diff($dbfields, array('id')))).'
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WHERE images.id = metadata.id
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;';
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echo '<pre>'.$query.'</pre>';
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mysql_query($query);
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}
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}
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}
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/**
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* returns an array associating element id (images.id) with its complete
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* path in the filesystem
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*
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* @param int id_uppercat
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* @param boolean recursive ?
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* @param boolean only newly added files ?
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* @return array
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*/
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function get_filelist($category_id = '', $recursive = false, $only_new = false)
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{
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$files = array();
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$query = '
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SELECT id, dir
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FROM '.CATEGORIES_TABLE.'
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;';
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$result = mysql_query($query);
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$cat_dirs = array();
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while ($row = mysql_fetch_array($result))
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{
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$cat_dirs[$row['id']] = $row['dir'];
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}
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// filling $uppercats_array : to each category id the uppercats list is
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// associated
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$uppercats_array = array();
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$query = '
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SELECT id, uppercats
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FROM '.CATEGORIES_TABLE;
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if (is_numeric($category_id))
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{
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if ($recursive)
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{
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$query.= '
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WHERE uppercats REGEXP \'(^|,)'.$category_id.'(,|$)\'
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';
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}
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else
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{
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$query.= '
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WHERE id = '.$category_id.'
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';
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}
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}
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$query.= '
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;';
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$result = mysql_query($query);
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while ($row = mysql_fetch_array($result))
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{
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$uppercats_array[$row['id']] = $row['uppercats'];
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}
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$query = '
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SELECT galleries_url
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FROM '.SITES_TABLE.'
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WHERE id = 1
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';
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$row = mysql_fetch_array(mysql_query($query));
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$basedir = $row['galleries_url'];
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// filling $cat_fulldirs
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$cat_fulldirs = array();
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foreach ($uppercats_array as $cat_id => $uppercats)
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{
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$uppercats = str_replace(',', '/', $uppercats);
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$cat_fulldirs[$cat_id] = $basedir.preg_replace('/(\d+)/e',
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"\$cat_dirs['$1']",
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$uppercats);
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}
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$query = '
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SELECT id, file, storage_category_id
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FROM '.IMAGES_TABLE.'
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WHERE storage_category_id IN ('.implode(','
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,array_keys($uppercats_array)).')';
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if ($only_new)
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{
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$query.= '
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AND date_metadata_update IS NULL
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';
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}
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$query.= '
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;';
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$result = mysql_query($query);
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while ($row = mysql_fetch_array($result))
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{
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$files[$row['id']]
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= $cat_fulldirs[$row['storage_category_id']].'/'.$row['file'];
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}
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return $files;
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}
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?>
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