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| 1 | <?php |
| 2 | declare(strict_types=1); |
| 3 | /** |
| 4 | * Pop PHP Framework (https://www.popphp.org/) |
| 5 | * |
| 6 | * @link https://github.com/popphp/popphp-framework |
| 7 | * @author Nick Sagona, III <nick@popphp.org> |
| 8 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 9 | * @license https://www.popphp.org/license New BSD License |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * @namespace |
| 14 | */ |
| 15 | namespace Pop\Console; |
| 16 | |
| 17 | /** |
| 18 | * Console prompt class |
| 19 | * |
| 20 | * @category Pop |
| 21 | * @package Pop\Console |
| 22 | * @author Nick Sagona, III <nick@popphp.org> |
| 23 | * @copyright Copyright (c) 2009-2026 Nick Sagona, III |
| 24 | * @license https://www.popphp.org/license New BSD License |
| 25 | * @version 5.0.0 |
| 26 | */ |
| 27 | class Prompt |
| 28 | { |
| 29 | |
| 30 | /** |
| 31 | * Instantiate the prompt object |
| 32 | * |
| 33 | * @param string $indent |
| 34 | * @param ?string $formattedHeader |
| 35 | * @param mixed $inputStream |
| 36 | */ |
| 37 | public function __construct( |
| 38 | protected string $indent = '', protected ?string $formattedHeader = null, protected mixed $inputStream = null |
| 39 | ) { } |
| 40 | |
| 41 | /** |
| 42 | * Get input from the prompt |
| 43 | * |
| 44 | * @param string $prompt |
| 45 | * @param ?array $options |
| 46 | * @param bool $caseSensitive |
| 47 | * @param int $length |
| 48 | * @return string |
| 49 | */ |
| 50 | public function prompt(string $prompt, ?array $options = null, bool $caseSensitive = false, int $length = 500): string |
| 51 | { |
| 52 | if ($this->formattedHeader !== null) { |
| 53 | echo $this->formattedHeader . $this->indent . $prompt; |
| 54 | } else { |
| 55 | echo $this->indent . $prompt; |
| 56 | } |
| 57 | |
| 58 | $input = null; |
| 59 | |
| 60 | if ($options !== null) { |
| 61 | $length = 0; |
| 62 | foreach ($options as $key => $value) { |
| 63 | $options[$key] = ($caseSensitive) ? $value : strtolower((string)$value); |
| 64 | if (strlen((string)$value) > $length) { |
| 65 | $length = strlen((string)$value); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | while (!in_array($input, $options)) { |
| 70 | if ($input !== null) { |
| 71 | echo $this->indent . $prompt; |
| 72 | } |
| 73 | $input = $this->getPromptInput($prompt, $length, $caseSensitive); |
| 74 | |
| 75 | // Empty input is what a closed/exhausted input stream produces on every |
| 76 | // read, so treat it the same as promptMulti() does: stop retrying and |
| 77 | // return it rather than spin forever re-reading a stream that can't |
| 78 | // ever satisfy $options. |
| 79 | if ($input === '') { |
| 80 | return $input; |
| 81 | } |
| 82 | } |
| 83 | } else { |
| 84 | while ($input === null) { |
| 85 | $input = $this->getPromptInput($prompt, $length, $caseSensitive); |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | return $input; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Display a prompt that accepts one or more comma-separated selections |
| 94 | * |
| 95 | * @param string $prompt |
| 96 | * @param array $options |
| 97 | * @param bool $caseSensitive |
| 98 | * @param int $length |
| 99 | * @return array |
| 100 | */ |
| 101 | public function promptMulti(string $prompt, array $options, bool $caseSensitive = false, int $length = 500): array |
| 102 | { |
| 103 | foreach ($options as $key => $value) { |
| 104 | $options[$key] = ($caseSensitive) ? (string)$value : strtolower((string)$value); |
| 105 | } |
| 106 | |
| 107 | if ($this->formattedHeader !== null) { |
| 108 | echo $this->formattedHeader . $this->indent . $prompt; |
| 109 | } else { |
| 110 | echo $this->indent . $prompt; |
| 111 | } |
| 112 | |
| 113 | $selected = null; |
| 114 | |
| 115 | while ($selected === null) { |
| 116 | $input = $this->getPromptInput($prompt, $length, $caseSensitive); |
| 117 | $tokens = array_values(array_filter( |
| 118 | array_map('trim', explode(',', $input)), |
| 119 | fn($token) => $token !== '' |
| 120 | )); |
| 121 | |
| 122 | // Empty input is a valid "no selection" answer, and is also what a |
| 123 | // closed input stream produces. Returning here is what keeps EOF |
| 124 | // from spinning the retry loop forever. |
| 125 | if (empty($tokens)) { |
| 126 | return []; |
| 127 | } |
| 128 | |
| 129 | if (empty(array_diff($tokens, $options))) { |
| 130 | $selected = array_values(array_unique($tokens)); |
| 131 | } else { |
| 132 | echo $this->indent . $prompt; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | return $selected; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Display confirm message prompt |
| 141 | * |
| 142 | * @param string $message |
| 143 | * @param array $options |
| 144 | * @param bool $caseSensitive |
| 145 | * @param int $length |
| 146 | * @param bool $exit |
| 147 | * @return string |
| 148 | */ |
| 149 | public function confirm( |
| 150 | string $message = 'Are you sure?', array $options = ['Y', 'N'], bool $caseSensitive = false, |
| 151 | int $length = 500, bool $exit = true |
| 152 | ): string |
| 153 | { |
| 154 | $message .= ' [' . implode('/', $options) . '] '; |
| 155 | $response = $this->prompt($message, $options, $caseSensitive, $length); |
| 156 | |
| 157 | if (($exit) && ((strtolower($response) == 'n') || (strtolower($response) == 'no'))) { |
| 158 | echo PHP_EOL; |
| 159 | exit(127); |
| 160 | } |
| 161 | |
| 162 | return $response; |
| 163 | } |
| 164 | |
| 165 | /** |
| 166 | * Get prompt input |
| 167 | * |
| 168 | * @param string $prompt |
| 169 | * @param int $length |
| 170 | * @param bool $caseSensitive |
| 171 | * @return string |
| 172 | */ |
| 173 | protected function getPromptInput(string $prompt, int $length = 500, bool $caseSensitive = false): string |
| 174 | { |
| 175 | $stream = $this->inputStream ?? fopen('php://stdin', 'r'); |
| 176 | $input = fgets($stream, strlen((string)$prompt) + $length); |
| 177 | $input = ($caseSensitive) ? rtrim((string)$input) : strtolower(rtrim((string)$input)); |
| 178 | |
| 179 | if ($this->inputStream === null) { |
| 180 | fclose($stream); |
| 181 | } |
| 182 | |
| 183 | return $input; |
| 184 | } |
| 185 | |
| 186 | } |