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<?php |
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/** |
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* Includes/Input.php. |
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* |
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* @author Adam "Saibamen" Stachowicz <[email protected]> |
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* @license MIT |
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* |
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* @link https://github.com/Saibamen/Generate-Sort-Numbers |
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*/ |
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namespace Includes; |
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require_once 'Text.php'; |
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/** |
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* Functions for receiving input from User. |
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*/ |
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class Input |
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{ |
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/** |
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* Get file size from User. |
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* |
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* @param string $message Message for User what he must type |
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* @param string $default Default file size for empty input. Default is '1MB' |
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* |
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* @return int|string Inserted file size in bytes |
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* |
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* @see Input::getBytesFromString() |
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*/ |
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public static function getFileSize($message, $default = '1MB') |
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{ |
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echo $message.' [Default: '.$default.']: '; |
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do { |
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$input = trim(fgets(/** @scrutinizer ignore-type */ STDIN)); |
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$isDefault = false; |
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if (is_null($input) || empty($input)) { |
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Text::debug('Using default input: '.$default); |
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$isDefault = true; |
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break; |
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} |
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$checkInput = self::getBytesFromString($input); |
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if (!$checkInput['error']) { |
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$input = $checkInput['bytes']; |
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break; |
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} |
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echo 'Please input valid file size: '; |
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} while (1); |
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if ($isDefault) { |
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// Check $default just for sure |
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$checkDefault = self::getBytesFromString($default); |
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// 1 MB in bytes |
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$input = 1048576; |
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if (!$checkDefault['error']) { |
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$input = $checkDefault['bytes']; |
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} |
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} |
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return $input; |
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} |
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/** |
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* Get valid filename from User. |
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* |
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* @param string $message Message for User what he must type |
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* @param string $default Default filename for empty input. Default is 'output' |
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* |
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* @return string Inserted filename |
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* |
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* @see Input::isFilenameWrong() |
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*/ |
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public static function getFilename($message, $default = 'output') |
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{ |
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echo $message.' [Default: '.$default.']: '; |
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do { |
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$input = trim(fgets(/** @scrutinizer ignore-type */ STDIN)); |
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// Check for wrong filename based on OS |
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$isInputWrong = self::isFilenameWrong($input); |
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if (is_null($input) || empty($input)) { |
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Text::debug('Using default input: '.$default); |
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$input = $default; |
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} elseif ($isInputWrong) { |
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echo 'Please input valid filename: '; |
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} |
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} while ($isInputWrong); |
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return $input; |
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} |
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/** |
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* Get bytes number from unit conversation. |
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* |
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* @param string $input User input e.g. '5B', '5MB' |
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* @param int $notation Notation type for kilo |
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* |
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* @return array |
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*/ |
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public static function getBytesFromString($input, $notation = 1024) |
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{ |
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$error = true; |
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$bytes = 0; |
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// https://regex101.com/r/v936BS/2 |
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if (preg_match('/^(?<number>\d+(?!\.+\,+\d*))\s*(?<unit>B|KB|MB|GB|TB)$/', $input, $matches)) { |
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$error = false; |
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} |
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if ($error) { |
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return array('error' => $error, 'bytes' => $bytes); |
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} |
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switch ($matches['unit']) { |
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case 'KB': |
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$bytes = $matches['number'] * $notation; |
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break; |
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case 'MB': |
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$bytes = $matches['number'] * pow($notation, 2); |
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break; |
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case 'GB': |
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$bytes = $matches['number'] * pow($notation, 3); |
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break; |
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case 'TB': |
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$bytes = $matches['number'] * pow($notation, 4); |
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break; |
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// As Bytes |
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default: |
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$bytes = $matches['number']; |
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break; |
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} |
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return array('error' => $error, 'bytes' => $bytes); |
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} |
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/** |
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* Get number from User. |
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* |
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* @param string $message Message for User what he must type |
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* @param int|float $default Default number for empty input. Default is 0 |
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* |
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* @return float Inserted number |
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*/ |
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public static function getNumber($message, $default = 0) |
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{ |
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echo $message.' [Default: '.$default.']: '; |
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do { |
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$input = trim(fgets(/** @scrutinizer ignore-type */ STDIN)); |
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if (is_null($input) || empty($input)) { |
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Text::debug('Using default input: '.$default); |
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$input = $default; |
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} elseif (!is_numeric($input)) { |
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echo 'Please input number: '; |
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} |
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} while (!is_numeric($input)); |
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return (float) $input; |
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} |
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/** |
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* Get User confirmation. Default is YES. |
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* |
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* @return bool Confirmation result |
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*/ |
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public static function getUserConfirm() |
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{ |
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while (1) { |
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echo 'Do you really want to continue? [Y/n]: '; |
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$input = trim(fgets(/** @scrutinizer ignore-type */ STDIN)); |
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// Default is YES |
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if (is_null($input) || empty($input) || strtolower($input) == 'y' || strtolower($input) == 'yes') { |
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return true; |
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} elseif (strtolower($input) == 'n' || strtolower($input) == 'no') { |
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return false; |
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} |
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} |
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// Fix missing return statement warning. Return true... |
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return true; |
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} |
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/** |
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* Check for wrong filename based on OS. |
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* |
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* @param string $input User filename input |
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* |
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* @return bool Is filename wrong? |
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*/ |
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public static function isFilenameWrong($input) |
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{ |
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/* |
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* Invalid characters in files: |
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* (Windows) \/:*?"<>| |
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* (Linux) / |
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*/ |
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$lastCharacter = substr($input, -1); |
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// Only last character because / and \ are for folders |
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$isInputWrong = $lastCharacter === '/' || $lastCharacter === '\\'; |
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// Running under Windows? |
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if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') { |
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// https://regex101.com/r/wR5d0J/2/ |
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$isInputWrong = $isInputWrong || preg_match('/[:*?"<>|]/', $input); |
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} |
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return $isInputWrong; |
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} |
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/** |
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* Get exists filename. |
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* |
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* @param string $message Message for User what he must type |
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* @param string $default Default filename for empty input. Default is 'output' |
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* @param string $fileExtension File extension. Default is '.dat' |
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* |
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* @return string |
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* |
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* @see Input::getFilename() |
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*/ |
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public static function getExistsFilename($message, $default = 'output', $fileExtension = '.dat') |
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{ |
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$filename = self::getFilename($message, $default); |
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do { |
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$error = false; |
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if (!file_exists($filename.$fileExtension)) { |
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$error = true; |
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$filename = self::getFilename('Please type existing file', $default); |
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} |
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} while ($error); |
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return $filename; |
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} |
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/** |
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* Terminate script if User denied on confirmation. |
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* |
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* @see Input::getUserConfirm() |
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*/ |
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public static function dieOnDenyUserConfirm() |
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{ |
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if (!self::getUserConfirm()) { |
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die('Script terminated by user.'); |
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} |
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} |
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} |
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In general, usage of exit should be done with care and only when running in a scripting context like a CLI script.