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Diffstat (limited to 'BSF/include/functions_metadata.inc.php')
| -rw-r--r-- | BSF/include/functions_metadata.inc.php | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/BSF/include/functions_metadata.inc.php b/BSF/include/functions_metadata.inc.php new file mode 100644 index 000000000..df89eea9c --- /dev/null +++ b/BSF/include/functions_metadata.inc.php @@ -0,0 +1,142 @@ +<?php +// +-----------------------------------------------------------------------+ +// | Piwigo - a PHP based picture gallery | +// +-----------------------------------------------------------------------+ +// | Copyright(C) 2008 Piwigo Team http://piwigo.org | +// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | +// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | +// +-----------------------------------------------------------------------+ +// | This program is free software; you can redistribute it and/or modify | +// | it under the terms of the GNU General Public License as published by | +// | the Free Software Foundation | +// | | +// | This program is distributed in the hope that it will be useful, but | +// | WITHOUT ANY WARRANTY; without even the implied warranty of | +// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | +// | General Public License for more details. | +// | | +// | You should have received a copy of the GNU General Public License | +// | along with this program; if not, write to the Free Software | +// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | +// | USA. | +// +-----------------------------------------------------------------------+ + +/** + * returns informations from IPTC metadata, mapping is done at the beginning + * of the function + * + * @param string $filename + * @return array + */ +function get_iptc_data($filename, $map) +{ + $result = array(); + + $imginfo = array(); + if (false == @getimagesize($filename, $imginfo) ) + { + return $result; + } + + if (isset($imginfo['APP13'])) + { + $iptc = iptcparse($imginfo['APP13']); + if (is_array($iptc)) + { + $rmap = array_flip($map); + foreach (array_keys($rmap) as $iptc_key) + { + if (isset($iptc[$iptc_key][0])) + { + if ($iptc_key == '2#025') + { + $value = implode(',', + array_map('clean_iptc_value',$iptc[$iptc_key])); + } + else + { + $value = clean_iptc_value($iptc[$iptc_key][0]); + } + + foreach (array_keys($map, $iptc_key) as $pwg_key) + { + $result[$pwg_key] = $value; + } + } + } + } + } + return $result; +} + +/** + * return a cleaned IPTC value + * + * @param string value + * @return string + */ +function clean_iptc_value($value) +{ + // strip leading zeros (weird Kodak Scanner software) + while ( isset($value[0]) and $value[0] == chr(0)) + { + $value = substr($value, 1); + } + // remove binary nulls + $value = str_replace(chr(0x00), ' ', $value); + + if ( preg_match('/[\x80-\xff]/', $value) ) + { + // apparently mac uses some MacRoman crap encoding. I don't know + // how to detect it so a plugin should do the trick. + $value = trigger_event('clean_iptc_value', $value); + $is_utf8 = seems_utf8($value); + $value = convert_charset( $value, + $is_utf8 ? 'utf-8' : 'iso-8859-1', + get_pwg_charset() ); + } + return $value; +} + +/** + * returns informations from EXIF metadata, mapping is done at the beginning + * of the function + * + * @param string $filename + * @return array + */ +function get_exif_data($filename, $map) +{ + $result = array(); + + if (!function_exists('read_exif_data')) + { + die('Exif extension not available, admin should disable exif use'); + } + + // Read EXIF data + if ($exif = @read_exif_data($filename)) + { + foreach ($map as $key => $field) + { + if (strpos($field, ';') === false) + { + if (isset($exif[$field])) + { + $result[$key] = $exif[$field]; + } + } + else + { + $tokens = explode(';', $field); + if (isset($exif[$tokens[0]][$tokens[1]])) + { + $result[$key] = $exif[$tokens[0]][$tokens[1]]; + } + } + } + } + + return $result; +} +?>
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