122 lines
3.7 KiB
PHP
122 lines
3.7 KiB
PHP
<?php defined("SYSPATH") or die("No direct script access.");
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/**
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* Gallery - a web based photo album viewer and editor
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* Copyright (C) 2000-2012 Bharat Mediratta
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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; either version 2 of the License, or (at
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* your option) any later version.
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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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/**
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* This is the API for handling exif data.
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*/
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class author_Core {
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static function fix($item) {
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if ($item->is_album()) { return false; }
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$mime = $item->mime_type;
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if ($mime == 'image/jpeg' || $mime == 'image/png' || $mime == 'image/gif') {}
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else { return false; }
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$owner = ORM::factory("user")->where("id", "=", $item->owner_id)->find();
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$user_name = $owner->full_name;
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$exiv = module::get_var('author', 'exiv_path');
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$version = module::get_var('author', 'exiv_version');
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/*
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Debian stable ships with exiv2 0.16 at the time of writing. You get
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roughly the same output out of the utility as with 0.20, but you have
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to invoke it several times.
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The real threshhold for this might be somewhere between 0.16 and 0.20,
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but the 0.16 way of doing things is forward compatible.
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*/
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$exivData = array();
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if ($version < 0.20) {
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exec("$exiv -p x " . escapeshellarg($item->file_path()), $exivData);
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exec("$exiv -p i " . escapeshellarg($item->file_path()), $exivData);
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exec("$exiv -p t " . escapeshellarg($item->file_path()), $exivData);
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} else {
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exec("$exiv -p a " . escapeshellarg($item->file_path()), $exivData);
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}
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$has = array();
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$mod = array();
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foreach ($exivData as $line)
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{
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$tokens = preg_split('/\s+/', $line, 4);
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$has[ $tokens[0] ] = $tokens[3];
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}
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$candidates = array(
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$has['Xmp.dc.creator'],
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$has['Iptc.Application2.Byline'],
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$has['Exif.Image.Artist'],
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$user_name,
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'Unknown');
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foreach ($candidates as $cand) {
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if ($cand != '') { $byline = $cand; break; }
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}
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if (!array_key_exists('Exif.Image.Artist', $has)) { $mod['Exif.Image.Artist'] = $byline; }
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if (!array_key_exists('Iptc.Application2.Byline', $has)) { $mod['Iptc.Application2.Byline'] = $byline; }
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/* Apply the credit block */
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$credit = module::get_var("author", "credit");
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if ($credit != '') {
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$mod['Iptc.Application2.Credit'] = $credit;
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}
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/*
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Older versions doesn't support XMP writing.
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*/
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if ($version >= 0.20) {
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if (!array_key_exists('Xmp.dc.creator', $has)) { $mod['Xmp.dc.creator'] = $byline; }
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/* Apply our own image terms URL */
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$terms = module::get_var("author", "usage_terms");
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if ($terms != '') {
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$mod['Xmp.xmpRights.UsageTerms'] = 'http://wiki.sverok.se/wiki/Bildbank-Bilder';
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}
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}
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$line = $exiv . ' ';
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foreach ($mod as $key => $value) {
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$line .= "-M \"set $key " . escapeshellarg($value) . "\" ";
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}
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$files = array(
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$item->file_path(),
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$item->thumb_path(),
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$item->resize_path()
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);
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foreach ($files as $file) {
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system("$line " . escapeshellarg($file));
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}
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$record = ORM::factory("author_record")->where("item_id", "=", $item->id)->find();
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if (!$record->loaded()) {
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$record->item_id = $item->id;
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}
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$record->author = $byline;
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$record->dirty = 0;
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$record->save();
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return $byline;
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}
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}
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