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<?php |
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namespace Consolidation\OutputFormatters\Transformations; |
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use Symfony\Component\Finder\Glob; |
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/** |
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* Reorder the field labels based on the user-selected fields |
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* to display. |
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*/ |
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class ReorderFields |
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{ |
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/** |
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* Given a simple list of user-supplied field keys or field labels, |
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* return a reordered version of the field labels matching the |
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* user selection. |
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* |
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* @param string|array $fields The user-selected fields |
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* @param array $fieldLabels An associative array mapping the field |
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* key to the field label |
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* @param array $data The data that will be rendered. |
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* |
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* @return array |
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*/ |
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public function reorder($fields, $fieldLabels, $data) |
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{ |
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if (empty($fieldLabels) && !empty($data)) { |
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$firstRow = reset($data); |
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$fieldLabels = array_combine(array_keys($firstRow), array_map('ucfirst', array_keys($firstRow))); |
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} |
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$fields = $this->getSelectedFieldKeys($fields, $fieldLabels); |
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if (empty($fields)) { |
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return $fieldLabels; |
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} |
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return $this->reorderFieldLabels($fields, $fieldLabels, $data); |
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} |
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protected function reorderFieldLabels($fields, $fieldLabels, $data) |
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{ |
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$result = []; |
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$firstRow = reset($data); |
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foreach ($fields as $field) { |
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if (array_key_exists($field, $firstRow)) { |
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if (array_key_exists($field, $fieldLabels)) { |
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$result[$field] = $fieldLabels[$field]; |
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} |
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} |
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} |
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return $result; |
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} |
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protected function getSelectedFieldKeys($fields, $fieldLabels) |
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{ |
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if (is_string($fields)) { |
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$fields = explode(',', $fields); |
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} |
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$selectedFields = []; |
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foreach ($fields as $field) { |
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$matchedFields = $this->matchFieldInLabelMap($field, $fieldLabels); |
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$selectedFields = array_merge($selectedFields, $matchedFields); |
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} |
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return $selectedFields; |
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} |
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protected function matchFieldInLabelMap($field, $fieldLabels) |
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{ |
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$fieldRegex = $this->convertToRegex($field); |
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return |
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array_filter( |
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array_keys($fieldLabels), |
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function ($key) use ($fieldRegex, $fieldLabels) { |
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$value = $fieldLabels[$key]; |
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return preg_match($fieldRegex, $value) || preg_match($fieldRegex, $key); |
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} |
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); |
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} |
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/** |
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* Convert the provided string into a regex suitable for use in |
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* preg_match. |
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* |
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* Matching occurs in the same way as the Symfony Finder component: |
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* http://symfony.com/doc/current/components/finder.html#file-name |
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*/ |
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protected function convertToRegex($str) |
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{ |
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return $this->isRegex($str) ? $str : Glob::toRegex($str); |
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} |
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/** |
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* Checks whether the string is a regex. This function is copied from |
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* MultiplePcreFilterIterator in the Symfony Finder component. |
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* |
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* @param string $str |
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* |
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* @return bool Whether the given string is a regex |
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*/ |
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protected function isRegex($str) |
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{ |
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if (preg_match('/^(.{3,}?)[imsxuADU]*$/', $str, $m)) { |
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$start = substr($m[1], 0, 1); |
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$end = substr($m[1], -1); |
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if ($start === $end) { |
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return !preg_match('/[*?[:alnum:] \\\\]/', $start); |
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} |
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foreach (array(array('{', '}'), array('(', ')'), array('[', ']'), array('<', '>')) as $delimiters) { |
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if ($start === $delimiters[0] && $end === $delimiters[1]) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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} |
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consolidation /
output-formatters
