ThemeResourceLoader::getCache() - Code Metrics - Inspection of "Merge pull request #8451 from creative-commoners/p..." - silverstripe/silverstripe-framework - Measure and Improve Code Quality continuously with Scrutinizer

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Push — 4 ( 766816...36b106 )

by Maxime

created 2018-10-07 21:38 UTC

ThemeResourceLoader::getCache() A

↳ Parent: ThemeResourceLoader

Complexity

Conditions	2
Paths	2

Size

Total Lines	6
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	2
eloc	3
nc	2
nop	0
dl	0
loc	6
rs	10
c	0
b	0
f	0

<?php

namespace SilverStripe\View;

use InvalidArgumentException;
use Psr\SimpleCache\CacheInterface;
use SilverStripe\Core\Flushable;
use SilverStripe\Core\Injector\Injector;
use SilverStripe\Core\Manifest\ModuleLoader;
use SilverStripe\Core\Path;

/**
 * Handles finding templates from a stack of template manifest objects.
 */
class ThemeResourceLoader implements Flushable
{

    /**
     * @var ThemeResourceLoader
     */
    private static $instance;

    /**
     * Internal memory cache for large sets of repeated calls
     *
     * @var array
     */
    protected static $cacheData = [];

    /**
     * The base path of the application
     *
     * @var string
     */
    protected $base;

    /**
     * List of template "sets" that contain a test manifest, and have an alias.
     * E.g. '$default'
     *
     * @var ThemeList[]
     */
    protected $sets = [];

    /**
     * @var CacheInterface
     */
    protected $cache;

    /**
     * @return ThemeResourceLoader
     */
    public static function inst()
    {
        return self::$instance ? self::$instance : self::$instance = new self();
    }

    /**
     * Set instance
     *
     * @param ThemeResourceLoader $instance
     */
    public static function set_instance(ThemeResourceLoader $instance)
    {
        self::$instance = $instance;
    }

    public function __construct($base = null)
    {
        $this->base = $base ? $base : BASE_PATH;
    }

    /**
     * Add a new theme manifest for a given identifier. E.g. '$default'
     *
     * @param string $set
     * @param ThemeList $manifest
     */
    public function addSet($set, ThemeList $manifest)
    {
        $this->sets[$set] = $manifest;
    }

    /**
     * Get a named theme set
     *
     * @param string $set
     * @return ThemeList
     */
    public function getSet($set)
    {
        if (isset($this->sets[$set])) {
            return $this->sets[$set];
        }
        return null;
    }

    /**
     * Given a theme identifier, determine the path from the root directory
     *
     * The mapping from $identifier to path follows these rules:
     * - A simple theme name ('mytheme') which maps to the standard themes dir (/themes/mytheme)
     * - A theme path with a leading slash ('/mymodule/themes/mytheme') which maps directly to that path.
     * - or a vendored theme path. (vendor/mymodule:mytheme) which maps to the nested 'theme' within
     *   that module. ('/mymodule/themes/mytheme').
     * - A vendored module with no nested theme (vendor/mymodule) which maps to the root directory
     *   of that module. ('/mymodule').
     *
     * @param string $identifier Theme identifier.
     * @return string Path from root, not including leading or trailing forward slash. E.g. themes/mytheme
     */
    public function getPath($identifier)
    {
        $slashPos = strpos($identifier, '/');
        $parts = explode(':', $identifier, 2);

        // If identifier starts with "/", it's a path from root
        if ($slashPos === 0) {
            if (count($parts) > 1) {
                throw new InvalidArgumentException("Invalid theme identifier {$identifier}");
            }
            return Path::normalise($identifier, true);
        }

        // If there is no slash / colon it's a legacy theme
        if ($slashPos === false && count($parts) === 1) {

            return Path::join(THEMES_DIR, $identifier);
        }

        // Extract from <vendor>/<module>:<theme> format.
        // <vendor> is optional, and if <theme> is omitted it defaults to the module root dir.
        // If <theme> is included, this is the name of the directory under moduleroot/themes/
        // which contains the theme.
        // <module> is always the name of the install directory, not necessarily the composer name.

        // Find module from first part
        $moduleName = $parts[0];
        $module = ModuleLoader::inst()->getManifest()->getModule($moduleName);
        if ($module) {

            $modulePath = $module->getRelativePath();
        } else {
            // If no module could be found, assume based on basename
            // with a warning
            if (strstr('/', $moduleName)) {
                list(, $modulePath) = explode('/', $parts[0], 2);
            } else {
                $modulePath = $moduleName;
            }
            trigger_error("No module named {$moduleName} found. Assuming path {$modulePath}", E_USER_WARNING);
        }

        // Parse relative path for this theme within this module
        $theme = count($parts) > 1 ? $parts[1] : '';
        if (empty($theme)) {
            // "module/vendor:"
            // "module/vendor"
            $subpath = '';
        } elseif (strpos($theme, '/') === 0) {
            // "module/vendor:/sub/path"
            $subpath = rtrim($theme, '/');
        } else {
            // "module/vendor:subtheme"
            $subpath = '/themes/' . $theme;
        }

        // Join module with subpath
        return Path::normalise($modulePath . $subpath, true);
    }

    /**
     * Attempts to find possible candidate templates from a set of template
     * names from modules, current theme directory and finally the application
     * folder.
     *
     * The template names can be passed in as plain strings, or be in the
     * format "type/name", where type is the type of template to search for
     * (e.g. Includes, Layout).
     *
     * The results of this method will be cached for future use.
     *
     * @param string|array $template Template name, or template spec in array format with the keys
     * 'type' (type string) and 'templates' (template hierarchy in order of precedence).
     * If 'templates' is ommitted then any other item in the array will be treated as the template
     * list, or list of templates each in the array spec given.
     * Templates with an .ss extension will be treated as file paths, and will bypass
     * theme-coupled resolution.
     * @param array $themes List of themes to use to resolve themes. Defaults to {@see SSViewer::get_themes()}
     * @return string Absolute path to resolved template file, or null if not resolved.
     * File location will be in the format themes/<theme>/templates/<directories>/<type>/<basename>.ss
     * Note that type (e.g. 'Layout') is not the root level directory under 'templates'.
     */
    public function findTemplate($template, $themes = null)
    {
        if ($themes === null) {
            $themes = SSViewer::get_themes();
        }

        // Look for a cached result for this data set
        $cacheKey = md5(json_encode($template) . json_encode($themes));
        if ($this->getCache()->has($cacheKey)) {
            return $this->getCache()->get($cacheKey);
        }

        $type = '';
        if (is_array($template)) {
            // Check if templates has type specified
            if (array_key_exists('type', $template)) {
                $type = $template['type'];
                unset($template['type']);
            }
            // Templates are either nested in 'templates' or just the rest of the list
            $templateList = array_key_exists('templates', $template) ? $template['templates'] : $template;
        } else {
            $templateList = array($template);
        }

        foreach ($templateList as $i => $template) {

            // Check if passed list of templates in array format
            if (is_array($template)) {
                $path = $this->findTemplate($template, $themes);
                if ($path) {
                    $this->getCache()->set($cacheKey, $path);
                    return $path;
                }
                continue;
            }

            // If we have an .ss extension, this is a path, not a template name. We should
            // pass in templates without extensions in order for template manifest to find
            // files dynamically.
            if (substr($template, -3) == '.ss' && file_exists($template)) {
                $this->getCache()->set($cacheKey, $template);
                return $template;
            }

            // Check string template identifier
            $template = str_replace('\\', '/', $template);
            $parts = explode('/', $template);

            $tail = array_pop($parts);
            $head = implode('/', $parts);
            $themePaths = $this->getThemePaths($themes);
            foreach ($themePaths as $themePath) {
                // Join path
                $pathParts = [ $this->base, $themePath, 'templates', $head, $type, $tail ];
                $path = Path::join($pathParts) . '.ss';
                if (file_exists($path)) {
                    $this->getCache()->set($cacheKey, $path);
                    return $path;
                }
            }
        }

        // No template found
        $this->getCache()->set($cacheKey, null);
        return null;
    }

    /**
     * Resolve themed CSS path
     *
     * @param string $name Name of CSS file without extension
     * @param array $themes List of themes, Defaults to {@see SSViewer::get_themes()}
     * @return string Path to resolved CSS file (relative to base dir)
     */
    public function findThemedCSS($name, $themes = null)
    {
        if ($themes === null) {
            $themes = SSViewer::get_themes();
        }

        if (substr($name, -4) !== '.css') {
            $name .= '.css';
        }

        $filename = $this->findThemedResource("css/$name", $themes);
        if ($filename === null) {

            $filename = $this->findThemedResource($name, $themes);
        }

        return $filename;
    }

    /**
     * Resolve themed javascript path
     *
     * A javascript file in the current theme path name 'themename/javascript/$name.js' is first searched for,
     * and it that doesn't exist and the module parameter is set then a javascript file with that name in
     * the module is used.
     *
     * @param string $name The name of the file - eg '/js/File.js' would have the name 'File'
     * @param array $themes List of themes, Defaults to {@see SSViewer::get_themes()}
     * @return string Path to resolved javascript file (relative to base dir)
     */
    public function findThemedJavascript($name, $themes = null)
    {
        if ($themes === null) {
            $themes = SSViewer::get_themes();
        }

        if (substr($name, -3) !== '.js') {
            $name .= '.js';
        }

        $filename = $this->findThemedResource("javascript/$name", $themes);
        if ($filename === null) {

            $filename = $this->findThemedResource($name, $themes);
        }

        return $filename;
    }

    /**
     * Resolve a themed resource
     *
     * A themed resource and be any file that resides in a theme folder.
     *
     * @param string $resource A file path relative to the root folder of a theme
     * @param array $themes An order listed of themes to search, Defaults to {@see SSViewer::get_themes()}
     * @return string
     */
    public function findThemedResource($resource, $themes = null)
    {
        if ($themes === null) {
            $themes = SSViewer::get_themes();
        }

        $paths = $this->getThemePaths($themes);

        foreach ($paths as $themePath) {
            $relativePath = Path::join($themePath, $resource);
            $absolutePath = Path::join($this->base, $relativePath);
            if (file_exists($absolutePath)) {
                return $relativePath;
            }
        }

        // Resource exists in no context
        return null;
    }

    /**
     * Resolve all themes to the list of root folders relative to site root
     *
     * @param array $themes List of themes to resolve. Supports named theme sets. Defaults to {@see SSViewer::get_themes()}.
     * @return array List of root-relative folders in order of precendence.
     */
    public function getThemePaths($themes = null)
    {
        if ($themes === null) {
            $themes = SSViewer::get_themes();
        }

        $paths = [];
        foreach ($themes as $themename) {
            // Expand theme sets
            $set = $this->getSet($themename);
            $subthemes = $set ? $set->getThemes() : [$themename];

            // Resolve paths
            foreach ($subthemes as $theme) {
                $paths[] = $this->getPath($theme);
            }
        }
        return $paths;
    }

    /**
     * Flush any cached data
     */
    public static function flush()
    {
        self::inst()->getCache()->clear();
    }

    /**
     * @return CacheInterface
     */
    public function getCache()
    {
        if (!$this->cache) {
            $this->setCache(Injector::inst()->get(CacheInterface::class . '.ThemeResourceLoader'));
        }
        return $this->cache;
    }

    /**
     * @param CacheInterface $cache
     * @return ThemeResourceLoader
     */
    public function setCache(CacheInterface $cache)
    {
        $this->cache = $cache;
        return $this;
    }
}


1			<?php
2
3			namespace SilverStripe\View;
4
5			use InvalidArgumentException;
6			use Psr\SimpleCache\CacheInterface;
7			use SilverStripe\Core\Flushable;
8			use SilverStripe\Core\Injector\Injector;
9			use SilverStripe\Core\Manifest\ModuleLoader;
10			use SilverStripe\Core\Path;
11
12			/**
13			* Handles finding templates from a stack of template manifest objects.
14			*/
15			class ThemeResourceLoader implements Flushable
16			{
17
18			/**
19			* @var ThemeResourceLoader
20			*/
21			private static $instance;
22
23			/**
24			* Internal memory cache for large sets of repeated calls
25			*
26			* @var array
27			*/
28			protected static $cacheData = [];
29
30			/**
31			* The base path of the application
32			*
33			* @var string
34			*/
35			protected $base;
36
37			/**
38			* List of template "sets" that contain a test manifest, and have an alias.
39			* E.g. '$default'
40			*
41			* @var ThemeList[]
42			*/
43			protected $sets = [];
44
45			/**
46			* @var CacheInterface
47			*/
48			protected $cache;
49
50			/**
51			* @return ThemeResourceLoader
52			*/
53			public static function inst()
54			{
55			return self::$instance ? self::$instance : self::$instance = new self();
56			}
57
58			/**
59			* Set instance
60			*
61			* @param ThemeResourceLoader $instance
62			*/
63			public static function set_instance(ThemeResourceLoader $instance)
64			{
65			self::$instance = $instance;
66			}
67
68			public function __construct($base = null)
69			{
70			$this->base = $base ? $base : BASE_PATH;
71			}
72
73			/**
74			* Add a new theme manifest for a given identifier. E.g. '$default'
75			*
76			* @param string $set
77			* @param ThemeList $manifest
78			*/
79			public function addSet($set, ThemeList $manifest)
80			{
81			$this->sets[$set] = $manifest;
82			}
83
84			/**
85			* Get a named theme set
86			*
87			* @param string $set
88			* @return ThemeList
89			*/
90			public function getSet($set)
91			{
92			if (isset($this->sets[$set])) {
93			return $this->sets[$set];
94			}
95			return null;
96			}
97
98			/**
99			* Given a theme identifier, determine the path from the root directory
100			*
101			* The mapping from $identifier to path follows these rules:
102			* - A simple theme name ('mytheme') which maps to the standard themes dir (/themes/mytheme)
103			* - A theme path with a leading slash ('/mymodule/themes/mytheme') which maps directly to that path.
104			* - or a vendored theme path. (vendor/mymodule:mytheme) which maps to the nested 'theme' within
105			* that module. ('/mymodule/themes/mytheme').
106			* - A vendored module with no nested theme (vendor/mymodule) which maps to the root directory
107			* of that module. ('/mymodule').
108			*
109			* @param string $identifier Theme identifier.
110			* @return string Path from root, not including leading or trailing forward slash. E.g. themes/mytheme
111			*/
112			public function getPath($identifier)
113			{
114			$slashPos = strpos($identifier, '/');
115			$parts = explode(':', $identifier, 2);
116
117			// If identifier starts with "/", it's a path from root
118			if ($slashPos === 0) {
119			if (count($parts) > 1) {
120			throw new InvalidArgumentException("Invalid theme identifier {$identifier}");
121			}
122			return Path::normalise($identifier, true);
123			}
124
125			// If there is no slash / colon it's a legacy theme
126			if ($slashPos === false && count($parts) === 1) {
			0 ignored issues – show introduced 2018-03-09 20:14 UTC by Report Bug Copy Issue Report The condition `$slashPos === false` is always `false`. Loading history...
127			return Path::join(THEMES_DIR, $identifier);
128			}
129
130			// Extract from <vendor>/<module>:<theme> format.
131			// <vendor> is optional, and if <theme> is omitted it defaults to the module root dir.
132			// If <theme> is included, this is the name of the directory under moduleroot/themes/
133			// which contains the theme.
134			// <module> is always the name of the install directory, not necessarily the composer name.
135
136			// Find module from first part
137			$moduleName = $parts[0];
138			$module = ModuleLoader::inst()->getManifest()->getModule($moduleName);
139			if ($module) {
			0 ignored issues – show introduced 2018-04-03 14:15 UTC by Report Bug Copy Issue Report `$module` is of type `SilverStripe\Core\Manifest\Module`, thus it always evaluated to `true`. Loading history...
140			$modulePath = $module->getRelativePath();
141			} else {
142			// If no module could be found, assume based on basename
143			// with a warning
144			if (strstr('/', $moduleName)) {
145			list(, $modulePath) = explode('/', $parts[0], 2);
146			} else {
147			$modulePath = $moduleName;
148			}
149			trigger_error("No module named {$moduleName} found. Assuming path {$modulePath}", E_USER_WARNING);
150			}
151
152			// Parse relative path for this theme within this module
153			$theme = count($parts) > 1 ? $parts[1] : '';
154			if (empty($theme)) {
155			// "module/vendor:"
156			// "module/vendor"
157			$subpath = '';
158			} elseif (strpos($theme, '/') === 0) {
159			// "module/vendor:/sub/path"
160			$subpath = rtrim($theme, '/');
161			} else {
162			// "module/vendor:subtheme"
163			$subpath = '/themes/' . $theme;
164			}
165
166			// Join module with subpath
167			return Path::normalise($modulePath . $subpath, true);
168			}
169
170			/**
171			* Attempts to find possible candidate templates from a set of template
172			* names from modules, current theme directory and finally the application
173			* folder.
174			*
175			* The template names can be passed in as plain strings, or be in the
176			* format "type/name", where type is the type of template to search for
177			* (e.g. Includes, Layout).
178			*
179			* The results of this method will be cached for future use.
180			*
181			* @param string\|array $template Template name, or template spec in array format with the keys
182			* 'type' (type string) and 'templates' (template hierarchy in order of precedence).
183			* If 'templates' is ommitted then any other item in the array will be treated as the template
184			* list, or list of templates each in the array spec given.
185			* Templates with an .ss extension will be treated as file paths, and will bypass
186			* theme-coupled resolution.
187			* @param array $themes List of themes to use to resolve themes. Defaults to {@see SSViewer::get_themes()}
188			* @return string Absolute path to resolved template file, or null if not resolved.
189			* File location will be in the format themes/<theme>/templates/<directories>/<type>/<basename>.ss
190			* Note that type (e.g. 'Layout') is not the root level directory under 'templates'.
191			*/
192			public function findTemplate($template, $themes = null)
193			{
194			if ($themes === null) {
195			$themes = SSViewer::get_themes();
196			}
197
198			// Look for a cached result for this data set
199			$cacheKey = md5(json_encode($template) . json_encode($themes));
200			if ($this->getCache()->has($cacheKey)) {
201			return $this->getCache()->get($cacheKey);
202			}
203
204			$type = '';
205			if (is_array($template)) {
206			// Check if templates has type specified
207			if (array_key_exists('type', $template)) {
208			$type = $template['type'];
209			unset($template['type']);
210			}
211			// Templates are either nested in 'templates' or just the rest of the list
212			$templateList = array_key_exists('templates', $template) ? $template['templates'] : $template;
213			} else {
214			$templateList = array($template);
215			}
216
217			foreach ($templateList as $i => $template) {
			0 ignored issues – show introduced 2018-02-06 22:33 UTC by Report Bug Copy Issue Report `$template` is overwriting one of the parameters of this function. Loading history...
218			// Check if passed list of templates in array format
219			if (is_array($template)) {
220			$path = $this->findTemplate($template, $themes);
221			if ($path) {
222			$this->getCache()->set($cacheKey, $path);
223			return $path;
224			}
225			continue;
226			}
227
228			// If we have an .ss extension, this is a path, not a template name. We should
229			// pass in templates without extensions in order for template manifest to find
230			// files dynamically.
231			if (substr($template, -3) == '.ss' && file_exists($template)) {
232			$this->getCache()->set($cacheKey, $template);
233			return $template;
234			}
235
236			// Check string template identifier
237			$template = str_replace('\\', '/', $template);
238			$parts = explode('/', $template);
239
240			$tail = array_pop($parts);
241			$head = implode('/', $parts);
242			$themePaths = $this->getThemePaths($themes);
243			foreach ($themePaths as $themePath) {
244			// Join path
245			$pathParts = [ $this->base, $themePath, 'templates', $head, $type, $tail ];
246			$path = Path::join($pathParts) . '.ss';
247			if (file_exists($path)) {
248			$this->getCache()->set($cacheKey, $path);
249			return $path;
250			}
251			}
252			}
253
254			// No template found
255			$this->getCache()->set($cacheKey, null);
256			return null;
257			}
258
259			/**
260			* Resolve themed CSS path
261			*
262			* @param string $name Name of CSS file without extension
263			* @param array $themes List of themes, Defaults to {@see SSViewer::get_themes()}
264			* @return string Path to resolved CSS file (relative to base dir)
265			*/
266			public function findThemedCSS($name, $themes = null)
267			{
268			if ($themes === null) {
269			$themes = SSViewer::get_themes();
270			}
271
272			if (substr($name, -4) !== '.css') {
273			$name .= '.css';
274			}
275
276			$filename = $this->findThemedResource("css/$name", $themes);
277			if ($filename === null) {
			0 ignored issues – show introduced 2018-03-09 20:14 UTC by Report Bug Copy Issue Report The condition `$filename === null` is always `false`. Loading history...
278			$filename = $this->findThemedResource($name, $themes);
279			}
280
281			return $filename;
282			}
283
284			/**
285			* Resolve themed javascript path
286			*
287			* A javascript file in the current theme path name 'themename/javascript/$name.js' is first searched for,
288			* and it that doesn't exist and the module parameter is set then a javascript file with that name in
289			* the module is used.
290			*
291			* @param string $name The name of the file - eg '/js/File.js' would have the name 'File'
292			* @param array $themes List of themes, Defaults to {@see SSViewer::get_themes()}
293			* @return string Path to resolved javascript file (relative to base dir)
294			*/
295			public function findThemedJavascript($name, $themes = null)
296			{
297			if ($themes === null) {
298			$themes = SSViewer::get_themes();
299			}
300
301			if (substr($name, -3) !== '.js') {
302			$name .= '.js';
303			}
304
305			$filename = $this->findThemedResource("javascript/$name", $themes);
306			if ($filename === null) {
			0 ignored issues – show introduced 2018-03-09 20:14 UTC by Report Bug Copy Issue Report The condition `$filename === null` is always `false`. Loading history...
307			$filename = $this->findThemedResource($name, $themes);
308			}
309
310			return $filename;
311			}
312
313			/**
314			* Resolve a themed resource
315			*
316			* A themed resource and be any file that resides in a theme folder.
317			*
318			* @param string $resource A file path relative to the root folder of a theme
319			* @param array $themes An order listed of themes to search, Defaults to {@see SSViewer::get_themes()}
320			* @return string
321			*/
322			public function findThemedResource($resource, $themes = null)
323			{
324			if ($themes === null) {
325			$themes = SSViewer::get_themes();
326			}
327
328			$paths = $this->getThemePaths($themes);
329
330			foreach ($paths as $themePath) {
331			$relativePath = Path::join($themePath, $resource);
332			$absolutePath = Path::join($this->base, $relativePath);
333			if (file_exists($absolutePath)) {
334			return $relativePath;
335			}
336			}
337
338			// Resource exists in no context
339			return null;
340			}
341
342			/**
343			* Resolve all themes to the list of root folders relative to site root
344			*
345			* @param array $themes List of themes to resolve. Supports named theme sets. Defaults to {@see SSViewer::get_themes()}.
346			* @return array List of root-relative folders in order of precendence.
347			*/
348			public function getThemePaths($themes = null)
349			{
350			if ($themes === null) {
351			$themes = SSViewer::get_themes();
352			}
353
354			$paths = [];
355			foreach ($themes as $themename) {
356			// Expand theme sets
357			$set = $this->getSet($themename);
358			$subthemes = $set ? $set->getThemes() : [$themename];
359
360			// Resolve paths
361			foreach ($subthemes as $theme) {
362			$paths[] = $this->getPath($theme);
363			}
364			}
365			return $paths;
366			}
367
368			/**
369			* Flush any cached data
370			*/
371			public static function flush()
372			{
373			self::inst()->getCache()->clear();
374			}
375
376			/**
377			* @return CacheInterface
378			*/
379			public function getCache()
380			{
381			if (!$this->cache) {
382			$this->setCache(Injector::inst()->get(CacheInterface::class . '.ThemeResourceLoader'));
383			}
384			return $this->cache;
385			}
386
387			/**
388			* @param CacheInterface $cache
389			* @return ThemeResourceLoader
390			*/
391			public function setCache(CacheInterface $cache)
392			{
393			$this->cache = $cache;
394			return $this;
395			}
396			}
397

silverstripe / silverstripe-framework

Push — 4 ( 766816...36b106 )

ThemeResourceLoader::getCache() A

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