Completed
Push — namespace-template ( de9897...7967f2 )
by Sam
06:34
created

SS_TemplateManifest   B

Complexity

Total Complexity 37

Size/Duplication

Total Lines 263
Duplicated Lines 4.18 %

Coupling/Cohesion

Components 1
Dependencies 1

Importance

Changes 1
Bugs 0 Features 0
Metric Value
c 1
b 0
f 0
dl 11
loc 263
rs 8.6
wmc 37
lcom 1
cbo 1

9 Methods

Rating   Name   Duplication   Size   Complexity  
A __construct() 0 15 4
A getBase() 0 3 1
A getCacheKey() 0 9 1
A getTemplates() 0 7 2
A getTemplate() 0 13 3
B getCandidateTemplate() 0 20 8
A regenerate() 0 17 2
F handleFile() 11 81 14
A init() 0 8 2

How to fix   Duplicated Code   

Duplicated Code

Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.

Common duplication problems, and corresponding solutions are:

1
<?php
2
/**
3
 * A class which builds a manifest of all templates present in a directory,
4
 * in both modules and themes.
5
 *
6
 * @package framework
7
 * @subpackage manifest
8
 */
9
class SS_TemplateManifest {
10
11
	const TEMPLATES_DIR = 'templates';
12
13
	protected $base;
14
	protected $tests;
15
	protected $cache;
16
	protected $cacheKey;
17
	protected $project;
18
	protected $inited;
19
	protected $templates = array();
20
21
	/**
22
	 * Constructs a new template manifest. The manifest is not actually built
23
	 * or loaded from cache until needed.
24
	 *
25
	 * @param string $base The base path.
26
	 * @param string $project Path to application code
27
	 *
28
	 * @param bool $includeTests Include tests in the manifest.
29
	 * @param bool $forceRegen Force the manifest to be regenerated.
30
	 */
31
	public function __construct($base, $project, $includeTests = false, $forceRegen = false) {
32
		$this->base  = $base;
33
		$this->tests = $includeTests;
34
35
		$this->project = $project;
36
37
		$cacheClass = defined('SS_MANIFESTCACHE') ? SS_MANIFESTCACHE : 'ManifestCache_File';
38
39
		$this->cache = new $cacheClass('templatemanifest'.($includeTests ? '_tests' : ''));
40
		$this->cacheKey = $this->getCacheKey($includeTests);
41
42
		if ($forceRegen) {
43
			$this->regenerate();
44
		}
45
	}
46
47
	/**
48
	 * @return string
49
	 */
50
	public function getBase() {
51
		return $this->base;
52
	}
53
54
	/**
55
	 * Generate a unique cache key to avoid manifest cache collisions.
56
	 * We compartmentalise based on the base path, the given project, and whether
57
	 * or not we intend to include tests.
58
	 * @param boolean $includeTests
59
	 * @return string
60
	 */
61
	public function getCacheKey($includeTests = false) {
62
		return sha1(sprintf(
63
			"manifest-%s-%s-%s",
64
				$this->base,
65
				$this->project,
66
				(int) $includeTests // cast true to 1, false to 0
67
			)
68
		);
69
	}
70
71
	/**
72
	 * Returns a map of all template information. The map is in the following
73
	 * format:
74
	 *
75
	 * <code>
76
	 *   array(
77
	 *     'moduletemplate' => array(
78
	 *       'main' => '/path/to/module/templates/Main.ss'
79
	 *     ),
80
	 *     'include' => array(
81
	 *       'include' => '/path/to/module/templates/Includes/Include.ss'
82
	 *     ),
83
	 *     'page' => array(
84
	 *       'themes' => array(
85
	 *         'simple' => array(
86
	 *           'main'   => '/path/to/theme/Page.ss'
87
	 *           'Layout' => '/path/to/theme/Layout/Page.ss'
88
	 *         )
89
	 *       )
90
	 *     )
91
	 *   )
92
	 * </code>
93
	 *
94
	 * @return array
95
	 */
96
	public function getTemplates() {
97
		if (!$this->inited) {
98
			$this->init();
99
		}
100
101
		return $this->templates;
102
	}
103
104
	/**
105
	 * Returns a set of possible candidate templates that match a certain
106
	 * template name.
107
	 *
108
	 * This is the same as extracting an individual array element from
109
	 * {@link SS_TemplateManifest::getTemplates()}.
110
	 *
111
	 * @param  string $name
112
	 * @return array
113
	 */
114
	public function getTemplate($name) {
115
		if (!$this->inited) {
116
			$this->init();
117
		}
118
119
		$name = strtolower($name);
120
121
		if (array_key_exists($name, $this->templates)) {
122
			return $this->templates[$name];
123
		} else {
124
			return array();
125
		}
126
	}
127
128
	/**
129
	 * Returns the correct candidate template. In order of importance, application
130
	 * project code, current theme and finally modules.
131
	 *
132
	 * @param string $name
133
	 * @param string $theme - theme name
134
	 *
135
	 * @return array
136
	 */
137
	public function getCandidateTemplate($name, $theme = null) {
138
		$found = array();
139
		$candidates = $this->getTemplate($name);
140
141
		// theme overrides modules
142
		if ($theme && isset($candidates['themes'][$theme])) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $theme of type string|null is loosely compared to true; this is ambiguous if the string can be empty. You might want to explicitly use !== null instead.

In PHP, under loose comparison (like ==, or !=, or switch conditions), values of different types might be equal.

For string values, the empty string '' is a special case, in particular the following results might be unexpected:

''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
Loading history...
143
			$found = array_merge($candidates, $candidates['themes'][$theme]);
144
		}
145
		// project overrides theme
146
		if ($this->project && isset($candidates[$this->project])) {
147
			$found = array_merge($found, $candidates[$this->project]);
148
		}
149
150
		$found = ($found) ? $found : $candidates;
151
152
		if (isset($found['themes'])) unset($found['themes']);
153
		if (isset($found[$this->project])) unset($found[$this->project]);
154
155
		return $found;
156
	}
157
158
	/**
159
	 * Regenerates the manifest by scanning the base path.
160
	 *
161
	 * @param bool $cache
162
	 */
163
	public function regenerate($cache = true) {
164
		$finder = new ManifestFileFinder();
165
		$finder->setOptions(array(
166
			'name_regex'     => '/\.ss$/',
167
			'include_themes' => true,
168
			'ignore_tests'  => !$this->tests,
169
			'file_callback'  => array($this, 'handleFile')
170
		));
171
172
		$finder->find($this->base);
173
174
		if ($cache) {
175
			$this->cache->save($this->templates, $this->cacheKey);
176
		}
177
178
		$this->inited = true;
179
	}
180
181
	public function handleFile($basename, $pathname, $depth)
0 ignored issues
show
Unused Code introduced by
The parameter $depth is not used and could be removed.

This check looks from parameters that have been defined for a function or method, but which are not used in the method body.

Loading history...
182
	{
183
		$projectFile = false;
184
		$theme = null;
185
186
		// Template in theme
187
		if (preg_match(
188
			'#'.preg_quote($this->base.'/'.THEMES_DIR).'/([^/_]+)(_[^/]+)?/(.*)$#',
189
			$pathname,
190
			$matches
191
		)) {
192
			$theme = $matches[1];
193
			$relPath = $matches[3];
194
195
		// Template in project
196
		} elseif (preg_match(
197
			'#'.preg_quote($this->base.'/'.$this->project).'/(.*)$#',
198
			$pathname,
199
			$matches
200
		)) {
201
			$projectFile = true;
202
			$relPath = $matches[1];
203
204
		// Template in module
205 View Code Duplication
		} elseif (preg_match(
0 ignored issues
show
Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

Loading history...
206
			'#'.preg_quote($this->base).'/([^/]+)/(.*)$#',
207
			$pathname,
208
			$matches
209
		)) {
210
			$relPath = $matches[2];
211
212
		} else {
213
			throw new \LogicException("Can't determine meaning of path: $pathname");
214
		}
215
216
		// If a templates subfolder is used, ignore that
217 View Code Duplication
		if (preg_match('#'.preg_quote(self::TEMPLATES_DIR).'/(.*)$#', $relPath, $matches)) {
0 ignored issues
show
Duplication introduced by
This code seems to be duplicated across your project.

Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.

You can also find more detailed suggestions in the “Code” section of your repository.

Loading history...
218
			$relPath = $matches[1];
219
		}
220
221
		// Layout and Content folders have special meaning
222
		if (preg_match('#^(.*/)?(Layout|Content|Includes)/([^/]+)$#', $relPath, $matches)) {
223
			$type = $matches[2];
224
			$relPath = "$matches[1]$matches[3]";
225
		} else {
226
			$type = "main";
227
		}
228
229
		$name = strtolower(substr($relPath, 0, -3));
230
		$name = str_replace('/', '\\', $name);
231
232
		if ($theme) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $theme of type string|null is loosely compared to true; this is ambiguous if the string can be empty. You might want to explicitly use !== null instead.

In PHP, under loose comparison (like ==, or !=, or switch conditions), values of different types might be equal.

For string values, the empty string '' is a special case, in particular the following results might be unexpected:

''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
Loading history...
233
			$this->templates[$name]['themes'][$theme][$type] = $pathname;
234
		} else if ($projectFile) {
235
			$this->templates[$name][$this->project][$type] = $pathname;
236
		} else {
237
			$this->templates[$name][$type] = $pathname;
238
		}
239
240
		// If we've found a template in a subdirectory, then allow its use for a non-namespaced class
241
		// as well. This was a common SilverStripe 3 approach, where templates were placed into
242
		// subfolders to suit the whim of the developer.
243
		if (strpos($name, '\\') !== false) {
244
			$name2 = substr($name, strrpos($name, '\\') + 1);
245
			// In of these cases, the template will only be provided if it isn't already set. This
246
			// matches SilverStripe 3 prioritisation.
247
			if ($theme) {
0 ignored issues
show
Bug Best Practice introduced by
The expression $theme of type string|null is loosely compared to true; this is ambiguous if the string can be empty. You might want to explicitly use !== null instead.

In PHP, under loose comparison (like ==, or !=, or switch conditions), values of different types might be equal.

For string values, the empty string '' is a special case, in particular the following results might be unexpected:

''   == false // true
''   == null  // true
'ab' == false // false
'ab' == null  // false

// It is often better to use strict comparison
'' === false // false
'' === null  // false
Loading history...
248
				if (!isset($this->templates[$name2]['themes'][$theme][$type])) {
249
					$this->templates[$name2]['themes'][$theme][$type] = $pathname;
250
				}
251
			} else if ($projectFile) {
252
				if (!isset($this->templates[$name2][$this->project][$type])) {
253
					$this->templates[$name2][$this->project][$type] = $pathname;
254
				}
255
			} else {
256
				if (!isset($this->templates[$name2][$type])) {
257
					$this->templates[$name2][$type] = $pathname;
258
				}
259
			}
260
		}
261
	}
262
263
	protected function init() {
264
		if ($data = $this->cache->load($this->cacheKey)) {
265
			$this->templates = $data;
266
			$this->inited    = true;
267
		} else {
268
			$this->regenerate();
269
		}
270
	}
271
}
272