FilesystemLoader::locateTemplate() - Code Metrics - Inspection of "refactor for lower complexity" - jenschude/HandlebarsBundle - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Jens

created 2016-07-22 16:32 UTC

FilesystemLoader::locateTemplate() B

↳ Parent: FilesystemLoader

Complexity

Conditions	5
Paths	9

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	10
CRAP Score	5

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	20
ccs	10
cts	10
cp	1
rs	8.8571
cc	5
eloc	11
nc	9
nop	4
crap	5

<?php
/**
 * @author @jayS-de <[email protected]>
 */


namespace JaySDe\HandlebarsBundle\Loader;


use JaySDe\HandlebarsBundle\Error\LoaderException;
use Symfony\Component\Config\FileLocatorInterface;
use Symfony\Component\Templating\TemplateNameParserInterface;

class FilesystemLoader
{
    /** Identifier of the main namespace. */
    const MAIN_NAMESPACE = '__main__';

    protected $locator;
    protected $parser;

    protected $paths = [];
    protected $cache = [];
    protected $errorCache = [];

    /**
     * FilesystemLoader constructor.
     * @param FileLocatorInterface $locator
     * @param TemplateNameParserInterface $parser
     */
    public function __construct(FileLocatorInterface $locator, TemplateNameParserInterface $parser)
    {
        $this->locator = $locator;
        $this->parser = $parser;
        $this->setPaths([]);
    }

    /**
     * Returns the paths to the templates.
     *
     * @param string $namespace A path namespace
     *
     * @return array The array of paths where to look for templates
     */
    public function getPaths($namespace = self::MAIN_NAMESPACE)
    {
        return isset($this->paths[$namespace]) ? $this->paths[$namespace] : [];
    }

    /**
     * Returns the path namespaces.
     *
     * The main namespace is always defined.
     *
     * @return array The array of defined namespaces
     */
    public function getNamespaces()
    {
        return array_keys($this->paths);
    }

    /**
     * Sets the paths where templates are stored.
     *
     * @param string|array $paths     A path or an array of paths where to look for templates
     * @param string       $namespace A path namespace
     */
    public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
    {
        if (!is_array($paths)) {
            $paths = [$paths];
        }

        $this->paths[$namespace] = [];
        foreach ($paths as $path) {
            $this->addPath($path, $namespace);
        }
    }

    /**
     * Adds a path where templates are stored.
     *
     * @param string $path      A path where to look for templates
     * @param string $namespace A path name
     *
     * @throws LoaderException
     */
    public function addPath($path, $namespace = self::MAIN_NAMESPACE)
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        if (!is_dir($path)) {
            throw new LoaderException(sprintf('The "%s" directory does not exist.', $path));
        }

        $this->paths[$namespace][] = rtrim($path, '/\\');
    }

    /**
     * Prepends a path where templates are stored.
     *
     * @param string $path      A path where to look for templates
     * @param string $namespace A path name
     *
     * @throws LoaderException
     */
    public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
    {
        // invalidate the cache
        $this->cache = $this->errorCache = [];

        if (!is_dir($path)) {
            throw new LoaderException(sprintf('The "%s" directory does not exist.', $path));
        }

        $path = rtrim($path, '/\\');

        if (!isset($this->paths[$namespace])) {
            $this->paths[$namespace][] = $path;
        } else {
            array_unshift($this->paths[$namespace], $path);
        }
    }

    /**
     * {@inheritdoc}
     */
    public function getSource($name)
    {
        return file_get_contents($this->findTemplate($name));
    }

    /**
     * {@inheritdoc}
     */
    public function getCacheKey($name)
    {
        return $this->findTemplate($name);
    }

    /**
     * {@inheritdoc}
     */
    public function exists($template)
    {
        $name = $this->normalizeName($template);

        if (isset($this->cache[$name])) {
            return true;
        }

        try {
            return false !== $this->findTemplate($name, false);
        } catch (LoaderException $exception) {
            return false;
        }
    }

    protected function parseName($name, $default = self::MAIN_NAMESPACE)
    {
        if (isset($name[0]) && '@' == $name[0]) {
            if (false === $pos = strpos($name, '/')) {
                throw new LoaderException(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
            }

            $namespace = substr($name, 1, $pos - 1);
            $shortname = substr($name, $pos + 1);

            return array($namespace, $shortname);
        }

        return array($default, $name);
    }

    protected function normalizeName($name)
    {
        return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
    }

    protected function findTemplate($template, $throw = true)
    {
        $name = $this->normalizeName($template);

        if (isset($this->cache[$name])) {
            return $this->cache[$name];
        }

        list($namespace, $shortname) = $this->parseName($name);
        if (!$this->validateTemplate($name, $namespace, $throw)) {
            return false;
        }

        foreach ($this->paths[$namespace] as $path) {
            if (is_file($path.'/'.$shortname)) {
                if (false !== $realpath = realpath($path.'/'.$shortname)) {
                    return $this->cache[$name] = $realpath;
                }

                return $this->cache[$name] = $path.'/'.$shortname;
            }
        }

        return $this->locateTemplate($template, $name, $namespace, $throw);
    }

    private function validateTemplate($name, $namespace, $throw = true)
    {
        if (isset($this->errorCache[$name])) {
            if (!$throw) {
                return false;
            }

            throw new LoaderException($this->errorCache[$name]);
        }

        if (!isset($this->paths[$namespace])) {
            $this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);

            if (!$throw) {
                return false;
            }

            throw new LoaderException($this->errorCache[$name]);
        }

        return true;
    }

    private function locateTemplate($template, $name, $namespace, $throw = true)
    {
        try {
            $template = $this->parser->parse($template);
            $realpath = $this->locator->locate($template);
            if (false !== $realpath && null !== $realpath) {
                return $this->cache[$name] = $realpath;
            }
        } catch (\Exception $e) {
            // catch locator not found exceptions
        }

        $this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));

        if (!$throw) {
            return false;
        }

        throw new LoaderException($this->errorCache[$name]);
    }
}


1		<?php
2		/**
3		* @author @jayS-de <[email protected]>
4		*/
5
6
7		namespace JaySDe\HandlebarsBundle\Loader;
8
9
10		use JaySDe\HandlebarsBundle\Error\LoaderException;
11		use Symfony\Component\Config\FileLocatorInterface;
12		use Symfony\Component\Templating\TemplateNameParserInterface;
13
14		class FilesystemLoader
15		{
16		/** Identifier of the main namespace. */
17		const MAIN_NAMESPACE = '__main__';
18
19		protected $locator;
20		protected $parser;
21
22		protected $paths = [];
23		protected $cache = [];
24		protected $errorCache = [];
25
26		/**
27		* FilesystemLoader constructor.
28		* @param FileLocatorInterface $locator
29		* @param TemplateNameParserInterface $parser
30		*/
31	23	public function __construct(FileLocatorInterface $locator, TemplateNameParserInterface $parser)
32		{
33	23	$this->locator = $locator;
34	23	$this->parser = $parser;
35	23	$this->setPaths([]);
36	23	}
37
38		/**
39		* Returns the paths to the templates.
40		*
41		* @param string $namespace A path namespace
42		*
43		* @return array The array of paths where to look for templates
44		*/
45	7	public function getPaths($namespace = self::MAIN_NAMESPACE)
46		{
47	7	return isset($this->paths[$namespace]) ? $this->paths[$namespace] : [];
48		}
49
50		/**
51		* Returns the path namespaces.
52		*
53		* The main namespace is always defined.
54		*
55		* @return array The array of defined namespaces
56		*/
57	1	public function getNamespaces()
58		{
59	1	return array_keys($this->paths);
60		}
61
62		/**
63		* Sets the paths where templates are stored.
64		*
65		* @param string\|array $paths A path or an array of paths where to look for templates
66		* @param string $namespace A path namespace
67		*/
68	23	public function setPaths($paths, $namespace = self::MAIN_NAMESPACE)
69		{
70	23	if (!is_array($paths)) {
71	1	$paths = [$paths];
72		}
73
74	23	$this->paths[$namespace] = [];
75	23	foreach ($paths as $path) {
76	4	$this->addPath($path, $namespace);
77		}
78	23	}
79
80		/**
81		* Adds a path where templates are stored.
82		*
83		* @param string $path A path where to look for templates
84		* @param string $namespace A path name
85		*
86		* @throws LoaderException
87		*/
88	18	public function addPath($path, $namespace = self::MAIN_NAMESPACE)
89		{
90		// invalidate the cache
91	18	$this->cache = $this->errorCache = [];
92
93	18	if (!is_dir($path)) {
94	2	throw new LoaderException(sprintf('The "%s" directory does not exist.', $path));
95		}
96
97	16	$this->paths[$namespace][] = rtrim($path, '/\\');
98	16	}
99
100		/**
101		* Prepends a path where templates are stored.
102		*
103		* @param string $path A path where to look for templates
104		* @param string $namespace A path name
105		*
106		* @throws LoaderException
107		*/
108	3	public function prependPath($path, $namespace = self::MAIN_NAMESPACE)
109		{
110		// invalidate the cache
111	3	$this->cache = $this->errorCache = [];
112
113	3	if (!is_dir($path)) {
114	1	throw new LoaderException(sprintf('The "%s" directory does not exist.', $path));
115		}
116
117	2	$path = rtrim($path, '/\\');
118
119	2	if (!isset($this->paths[$namespace])) {
120	1	$this->paths[$namespace][] = $path;
121		} else {
122	1	array_unshift($this->paths[$namespace], $path);
123		}
124	2	}
125
126		/**
127		* {@inheritdoc}
128		*/
129	5	public function getSource($name)
130		{
131	5	return file_get_contents($this->findTemplate($name));
132		}
133
134		/**
135		* {@inheritdoc}
136		*/
137	2	public function getCacheKey($name)
138		{
139	2	return $this->findTemplate($name);
140		}
141
142		/**
143		* {@inheritdoc}
144		*/
145	6	public function exists($template)
146		{
147	6	$name = $this->normalizeName($template);
148
149	6	if (isset($this->cache[$name])) {
150	1	return true;
151		}
152
153		try {
154	6	return false !== $this->findTemplate($name, false);
155	1	} catch (LoaderException $exception) {
156	1	return false;
157		}
158		}
159
160	12	protected function parseName($name, $default = self::MAIN_NAMESPACE)
161		{
162	12	if (isset($name[0]) && '@' == $name[0]) {
163	5	if (false === $pos = strpos($name, '/')) {
164	2	throw new LoaderException(sprintf('Malformed namespaced template name "%s" (expecting "@namespace/template_name").', $name));
165		}
166
167	3	$namespace = substr($name, 1, $pos - 1);
168	3	$shortname = substr($name, $pos + 1);
169
170	3	return array($namespace, $shortname);
171		}
172
173	8	return array($default, $name);
174		}
175
176	12	protected function normalizeName($name)
177		{
178	12	return preg_replace('#/{2,}#', '/', str_replace('\\', '/', (string) $name));
179		}
180
181	12	protected function findTemplate($template, $throw = true)
182		{
183	12	$name = $this->normalizeName($template);
184
185	12	if (isset($this->cache[$name])) {
186	1	return $this->cache[$name];
187		}
188
189	12	list($namespace, $shortname) = $this->parseName($name);
190	10	if (!$this->validateTemplate($name, $namespace, $throw)) {
191	2	return false;
192		}
193
194	8	foreach ($this->paths[$namespace] as $path) {
195	5	if (is_file($path.'/'.$shortname)) {
196	1	if (false !== $realpath = realpath($path.'/'.$shortname)) {
197	1	return $this->cache[$name] = $realpath;
198		}
199
200	4	return $this->cache[$name] = $path.'/'.$shortname;
201		}
202		}
203
204	8	return $this->locateTemplate($template, $name, $namespace, $throw);
205		}
206
207	10	private function validateTemplate($name, $namespace, $throw = true)
208		{
209	10	if (isset($this->errorCache[$name])) {
210	1	if (!$throw) {
211	1	return false;
212		}
213
214	1	throw new LoaderException($this->errorCache[$name]);
215		}
216
217	10	if (!isset($this->paths[$namespace])) {
218	2	$this->errorCache[$name] = sprintf('There are no registered paths for namespace "%s".', $namespace);
219
220	2	if (!$throw) {
221	1	return false;
222		}
223
224	1	throw new LoaderException($this->errorCache[$name]);
225		}
226
227	8	return true;
228		}
229
230	8	private function locateTemplate($template, $name, $namespace, $throw = true)
231		{
232		try {
233	8	$template = $this->parser->parse($template);
234	8	$realpath = $this->locator->locate($template);
235	7	if (false !== $realpath && null !== $realpath) {
236	7	return $this->cache[$name] = $realpath;
237		}
238	1	} catch (\Exception $e) {
239		// catch locator not found exceptions
240		}
241
242	4	$this->errorCache[$name] = sprintf('Unable to find template "%s" (looked into: %s).', $name, implode(', ', $this->paths[$namespace]));
243
244	4	if (!$throw) {
245	1	return false;
246		}
247
248	3	throw new LoaderException($this->errorCache[$name]);
249		}
250		}
251

jenschude / HandlebarsBundle

Push — develop ( 127c8a...60d8d5 )

FilesystemLoader::locateTemplate() B

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