FileEye\MimeMap\MapUpdater

Complexity

Total Complexity

24

Size/Duplication

Total Lines	176
Duplicated Lines	0 %

Test Coverage

Coverage

98.46%

Importance

Changes

0

6 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	3	1
A	getDefaultMapBuildFile()	0	3	1
A	writeMapToPhpClassFile()	0	9	1
A	applyOverrides()	0	14	3
D	loadMapFromFreedesktopFile()	0	59	14
A	loadMapFromApacheFile()	0	19	4

<?php

namespace FileEye\MimeMap;

use FileEye\MimeMap\Map\AbstractMap;

/**
 * Compiles the MIME type to file extension map.
 */
class MapUpdater
{
    /**
     * The AbstractMap object to update.
     *
     * @var AbstractMap
     */
    protected $map;

    /**
     * Returns the default file with override commands to be executed.
     *
     * The YAML file provides an array of calls to MapHandler methods to be
     * executed sequentially. Each entry indicates the method to be invoked and
     * the arguments to be passed in.
     *
     * @return string
     */
    public static function getDefaultMapBuildFile()
    {
        return __DIR__ . '/../resources/default_map_build.yml';
    }

    /**
     * Constructor.
     *
     * @param AbstractMap $map
     *   The map.
     */
    public function __construct(AbstractMap $map)
    {
        $this->map = $map;
    }

    /**
     * Loads a new type-to-extension map reading from a file in Apache format.
     *
     * @param string $source_file
     *   The source file. The file must conform to the format in the Apache
     *   source code repository file where MIME types and file extensions are
     *   associated.
     *
     * @return string[]
     *   An array of error messages.
     */
    public function loadMapFromApacheFile($source_file)
    {
        $errors = [];

        $lines = file($source_file);
        foreach ($lines as $line) {
            if ($line{0} == '#') {
                continue;
            }
            $line = preg_replace("#\\s+#", ' ', trim($line));
            $parts = explode(' ', $line);
            $type = array_shift($parts);
            foreach ($parts as $extension) {
                $this->map->addTypeExtensionMapping($type, $extension);
            }
        }
        $this->map->sort();

        return $errors;
    }

    /**
     * Loads a new type-to-extension map reading from a Freedesktop.org file.
     *
     * @param string $source_file
     *   The source file. The file must conform to the format in the
     *   Freedesktop.org database.
     *
     * @return string[]
     *   An array of error messages.
     */
    public function loadMapFromFreedesktopFile($source_file)
    {
        $errors = [];
        $xml = simplexml_load_string(file_get_contents($source_file));
        $aliases = [];

        foreach ($xml as $node) {
            $exts = [];
            foreach ($node->glob as $glob) {
                $pattern = (string) $glob['pattern'];
                if ('*' != $pattern[0] || '.' != $pattern[1]) {
                    continue;
                }
                $exts[] = substr($pattern, 2);
            }
            if (empty($exts)) {
                continue;
            }

            $type = (string) $node['type'];

            // Add description.
            if (isset($node->comment)) {
                $this->map->addTypeDescription($type, (string) $node->comment[0]);
            }
            if (isset($node->acronym)) {
                $acronym = (string) $node->acronym;
                if (isset($node->{'expanded-acronym'})) {
                    $acronym .= ': ' . (string) $node->{'expanded-acronym'};
                }
                $this->map->addTypeDescription($type, $acronym);
            }

            // Add extensions.
            foreach ($exts as $ext) {
                $this->map->addTypeExtensionMapping($type, $ext);
            }

            // All aliases are accumulated and processed at the end of the
            // cycle to allow proper consistency checking on the completely
            // developed list of types.
            foreach ($node->alias as $alias) {
                $aliases[$type][] = (string) $alias['type'];
            }
        }

        // Add all the aliases, provide logging of errors.
        foreach ($aliases as $type => $a) {
            foreach ($a as $alias) {
                try {
                    $this->map->addTypeAlias($type, $alias);
                } catch (MappingException $e) {
                    $errors[] = $e->getMessage();
                }
            }
        }
        $this->map->sort();

        return $errors;
    }

    /**
     * Applies to the map an array of overrides.
     *
     * @param array $overrides
     *   The overrides to be applied.
     *
     * @return string[]
     *   An array of error messages.
     */
    public function applyOverrides(array $overrides)
    {
        $errors = [];

        foreach ($overrides as $command) {
            try {
                call_user_func_array([$this->map, $command[0]], $command[1]);
            } catch (MappingException $e) {
                $errors[] = $e->getMessage();
            }
        }
        $this->map->sort();

        return $errors;
    }

    /**
     * Updates the map at a destination PHP file.
     *
     * @return $this
     */
    public function writeMapToPhpClassFile($file)
    {
        $content = preg_replace(
            '#protected static \$map = (.+?);#s',
            "protected static \$map = " . var_export($this->map->getMapArray(), true) . ";",
            file_get_contents($file)
        );
        file_put_contents($file, $content);
        return $this;
    }
}