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1 | <?php |
2 | |
3 | /** |
4 | * LocalFile cover content loader. |
5 | * |
6 | * PHP version 8 |
7 | * |
8 | * Copyright (C) Villanova University 2010. |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify |
11 | * it under the terms of the GNU General Public License version 2, |
12 | * as published by the Free Software Foundation. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
22 | * |
23 | * @category VuFind |
24 | * @package Content |
25 | * @author Leila Gonzales <lmg@agiweb.org> |
26 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
27 | * @link https://vufind.org/wiki/development Wiki |
28 | */ |
29 | |
30 | namespace VuFind\Content\Covers; |
31 | |
32 | use function in_array; |
33 | use function is_string; |
34 | |
35 | /** |
36 | * Local file cover content loader. |
37 | * |
38 | * @category VuFind |
39 | * @package Content |
40 | * @author Leila Gonzales <lmg@agiweb.org> |
41 | * @license http://opensource.org/licenses/gpl-2.0.php GNU General Public License |
42 | * @link https://vufind.org/wiki/development Wiki |
43 | */ |
44 | class LocalFile extends \VuFind\Content\AbstractCover |
45 | { |
46 | /** |
47 | * Image file extensions to look for when using %anyimage% token. |
48 | * |
49 | * @var array |
50 | */ |
51 | protected $imageExtensions = ['gif', 'jpg', 'jpeg', 'png', 'tif', 'tiff']; |
52 | |
53 | /** |
54 | * Image sizes to look for when using %size% token. |
55 | * |
56 | * @var array |
57 | */ |
58 | protected $imageSizes = ['small', 'medium', 'large']; |
59 | |
60 | /** |
61 | * MIME types allowed to be loaded from disk. |
62 | * |
63 | * @var array |
64 | */ |
65 | protected $allowedMimeTypes = [ |
66 | 'image/gif', 'image/jpeg', 'image/png', 'image/tiff', |
67 | ]; |
68 | |
69 | /** |
70 | * Does this plugin support the provided ID array? |
71 | * |
72 | * @param array $ids IDs that will later be sent to load() -- see below. |
73 | * |
74 | * @return bool |
75 | */ |
76 | public function supports($ids) |
77 | { |
78 | // We won't know what we need until we parse the path string; accept |
79 | // everything at this stage: |
80 | return true; |
81 | } |
82 | |
83 | /** |
84 | * Get image location from local file storage. |
85 | * |
86 | * @param string $key local file directory path |
87 | * @param string $size Size of image to load (small/medium/large) |
88 | * @param array $ids Associative array of identifiers (keys may include 'isbn' |
89 | * pointing to an ISBN object and 'issn' pointing to a string) |
90 | * |
91 | * @return string|bool |
92 | */ |
93 | public function getUrl($key, $size, $ids) |
94 | { |
95 | // convert all of the tokens: |
96 | $fileName = $this->replaceImageTypeTokens( |
97 | $this->replaceEnvironmentSizeAndIdTokens($key, $ids, $size) |
98 | ); |
99 | // Validate MIME type if we have a valid file path. |
100 | if ($fileName && file_exists($fileName)) { |
101 | if (in_array(mime_content_type($fileName), $this->allowedMimeTypes)) { |
102 | return 'file://' . $fileName; |
103 | } |
104 | } |
105 | // If we got this far, we couldn't find a match. |
106 | return false; |
107 | } |
108 | |
109 | /** |
110 | * Convert tokens to appropriate values from environment, size parameter and ID array values. |
111 | * |
112 | * @param string $filePath file path of image file |
113 | * @param array $ids Associative array of identifiers |
114 | * (keys may include 'isbn' pointing to an ISBN object and |
115 | * 'issn' pointing to a string) |
116 | * @param string $size size of image (small/medium/large) |
117 | * |
118 | * @return string |
119 | */ |
120 | protected function replaceEnvironmentSizeAndIdTokens(string $filePath, array $ids, string $size): string |
121 | { |
122 | // Seed the token array with standard environment variables: |
123 | $tokens = ['%vufind-home%', '%vufind-local-dir%']; |
124 | $replacements = [APPLICATION_PATH, LOCAL_OVERRIDE_DIR]; |
125 | |
126 | // Only create tokens for strings, not objects: |
127 | foreach ($ids as $key => $val) { |
128 | if (is_string($val)) { |
129 | $tokens[] = '%' . $key . '%'; |
130 | $replacements[] = $val; |
131 | } |
132 | } |
133 | |
134 | // Special-case handling for ISBN object: |
135 | if (isset($ids['isbn'])) { |
136 | $tokens[] = '%isbn10%'; |
137 | $replacements[] = $ids['isbn']->get10(); |
138 | |
139 | $tokens[] = '%isbn13%'; |
140 | $replacements[] = $ids['isbn']->get13(); |
141 | } |
142 | |
143 | // Size handling: |
144 | if (in_array($size, $this->imageSizes)) { |
145 | $tokens[] = '%size%'; |
146 | $replacements[] = $size; |
147 | } |
148 | |
149 | return str_replace($tokens, $replacements, $filePath); |
150 | } |
151 | |
152 | /** |
153 | * Convert tokens to image type file extension. |
154 | * |
155 | * @param string $fileName file path of image file |
156 | * |
157 | * @return string |
158 | */ |
159 | protected function replaceImageTypeTokens(string $fileName): string |
160 | { |
161 | // If anyimage is specified, then we loop through all |
162 | // image extensions to find the right filename |
163 | if (str_contains($fileName, '%anyimage%')) { |
164 | foreach ($this->imageExtensions as $val) { |
165 | foreach ([$val, strtoupper($val), ucwords($val)] as $finalVal) { |
166 | $checkFile = str_replace('%anyimage%', $finalVal, $fileName); |
167 | if (file_exists($checkFile)) { |
168 | return $checkFile; |
169 | } |
170 | } |
171 | } |
172 | } |
173 | // Default behavior: do not modify filename: |
174 | return $fileName; |
175 | } |
176 | } |