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<?php |
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namespace MLD\Converter; |
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/** |
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* Class AbstractConverter |
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* @package MLD\Converter |
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*/ |
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abstract class AbstractConverter implements ConverterInterface |
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{ |
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/** |
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* @var string path of the output directory |
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*/ |
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private $outputDirectory; |
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/** @var array defines the fields to keep */ |
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private $fields; |
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/** @var array */ |
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protected $countries; |
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/** |
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* @param array $countries |
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*/ |
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public function __construct(array $countries) |
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{ |
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$this->countries = $countries; |
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} |
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/** |
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* Save the data to disk |
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* @param string $outputFile name of the output file |
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* @return int|bool |
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*/ |
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public function save($outputFile = '') |
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{ |
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if (empty($this->outputDirectory)) { |
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$this->setDefaultOutputDirectory(); |
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} |
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if (!is_dir($this->outputDirectory)) { |
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mkdir($this->outputDirectory); |
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} |
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if (empty($outputFile)) { |
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$outputFile = date('Ymd-His', time()) . '-countries'; |
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} |
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// keep only the specified fields |
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if (!empty($this->fields)) { |
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array_walk($this->countries, function (&$country) { |
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$country = array_intersect_key($country, array_flip($this->fields)); |
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}); |
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} |
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return file_put_contents($this->outputDirectory . $outputFile, $this->convert()); |
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} |
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/** |
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* Set the directory to which output will be written. |
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* |
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* @param string $outputDirectory |
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* @return $this |
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*/ |
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public function setOutputDirectory($outputDirectory) |
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{ |
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if (substr($outputDirectory, strlen($outputDirectory) - 1, 1) !== DIRECTORY_SEPARATOR) { |
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$outputDirectory .= DIRECTORY_SEPARATOR; |
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} |
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$this->outputDirectory = $outputDirectory; |
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return $this; |
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} |
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/** |
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* Defines the fields to keep |
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* @param array $fields |
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* @return $this |
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*/ |
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public function setFields(array $fields) |
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{ |
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$this->fields = $fields; |
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return $this; |
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} |
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/** |
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* Gets fields that will currently be output. |
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* @return array A list of field names. |
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*/ |
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public function getFields() |
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{ |
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if ($this->fields !== null) { |
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return $this->fields; |
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} |
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if (empty($this->countries)) { |
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return array(); |
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} |
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return array_keys($this->countries[0]); |
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} |
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/** |
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* Converts arrays to comma-separated strings |
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* @param array $input |
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* @param string $glue |
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* @return array |
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*/ |
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protected function convertArrays(array &$input, $glue = ',') |
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{ |
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return array_map(function ($value) use ($glue) { |
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return is_array($value) ? $this->recursiveImplode($value, $glue) : $value; |
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}, $input); |
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} |
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/** |
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* Set the default output directory |
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*/ |
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private function setDefaultOutputDirectory() |
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{ |
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$this->outputDirectory = __DIR__ . DIRECTORY_SEPARATOR . 'dist' . DIRECTORY_SEPARATOR; |
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} |
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/** |
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* Recursively implode elements |
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* @param array $input |
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* @param string $glue |
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* @return string the array recursively imploded with the glue |
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*/ |
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private function recursiveImplode(array $input, $glue) |
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{ |
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// remove empty strings from the array |
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$input = array_filter($input, function ($entry) { |
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return $entry !== ''; |
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}); |
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array_walk($input, function (&$value) use ($glue) { |
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if (is_array($value)) { |
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$value = $this->recursiveImplode($value, $glue); |
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} |
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}); |
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return implode($glue, $input); |
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} |
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} |