BaseConsole.php 32.2 KB
Newer Older
Qiang Xue committed
1 2 3 4 5 6 7
<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

8
namespace yii\helpers;
Qiang Xue committed
9 10

/**
11
 * BaseConsole provides concrete implementation for [[Console]].
12
 *
13
 * Do not use BaseConsole. Use [[Console]] instead.
14
 *
Qiang Xue committed
15 16 17
 * @author Carsten Brandt <mail@cebe.cc>
 * @since 2.0
 */
18
class BaseConsole
Qiang Xue committed
19
{
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
    const FG_BLACK  = 30;
    const FG_RED    = 31;
    const FG_GREEN  = 32;
    const FG_YELLOW = 33;
    const FG_BLUE   = 34;
    const FG_PURPLE = 35;
    const FG_CYAN   = 36;
    const FG_GREY   = 37;

    const BG_BLACK  = 40;
    const BG_RED    = 41;
    const BG_GREEN  = 42;
    const BG_YELLOW = 43;
    const BG_BLUE   = 44;
    const BG_PURPLE = 45;
    const BG_CYAN   = 46;
    const BG_GREY   = 47;

    const RESET       = 0;
    const NORMAL      = 0;
    const BOLD        = 1;
    const ITALIC      = 3;
    const UNDERLINE   = 4;
    const BLINK       = 5;
    const NEGATIVE    = 7;
    const CONCEALED   = 8;
    const CROSSED_OUT = 9;
    const FRAMED      = 51;
    const ENCIRCLED   = 52;
    const OVERLINED   = 53;

    /**
     * Moves the terminal cursor up by sending ANSI control code CUU to the terminal.
     * If the cursor is already at the edge of the screen, this has no effect.
     * @param integer $rows number of rows the cursor should be moved up
     */
    public static function moveCursorUp($rows = 1)
    {
        echo "\033[" . (int) $rows . 'A';
    }

    /**
     * Moves the terminal cursor down by sending ANSI control code CUD to the terminal.
     * If the cursor is already at the edge of the screen, this has no effect.
     * @param integer $rows number of rows the cursor should be moved down
     */
    public static function moveCursorDown($rows = 1)
    {
        echo "\033[" . (int) $rows . 'B';
    }

    /**
     * Moves the terminal cursor forward by sending ANSI control code CUF to the terminal.
     * If the cursor is already at the edge of the screen, this has no effect.
     * @param integer $steps number of steps the cursor should be moved forward
     */
    public static function moveCursorForward($steps = 1)
    {
        echo "\033[" . (int) $steps . 'C';
    }

    /**
     * Moves the terminal cursor backward by sending ANSI control code CUB to the terminal.
     * If the cursor is already at the edge of the screen, this has no effect.
     * @param integer $steps number of steps the cursor should be moved backward
     */
    public static function moveCursorBackward($steps = 1)
    {
        echo "\033[" . (int) $steps . 'D';
    }

    /**
     * Moves the terminal cursor to the beginning of the next line by sending ANSI control code CNL to the terminal.
     * @param integer $lines number of lines the cursor should be moved down
     */
    public static function moveCursorNextLine($lines = 1)
    {
        echo "\033[" . (int) $lines . 'E';
    }

    /**
     * Moves the terminal cursor to the beginning of the previous line by sending ANSI control code CPL to the terminal.
     * @param integer $lines number of lines the cursor should be moved up
     */
    public static function moveCursorPrevLine($lines = 1)
    {
        echo "\033[" . (int) $lines . 'F';
    }

    /**
     * Moves the cursor to an absolute position given as column and row by sending ANSI control code CUP or CHA to the terminal.
111 112
     * @param integer $column 1-based column number, 1 is the left edge of the screen.
     * @param integer|null $row 1-based row number, 1 is the top edge of the screen. if not set, will move cursor only in current line.
113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235
     */
    public static function moveCursorTo($column, $row = null)
    {
        if ($row === null) {
            echo "\033[" . (int) $column . 'G';
        } else {
            echo "\033[" . (int) $row . ';' . (int) $column . 'H';
        }
    }

    /**
     * Scrolls whole page up by sending ANSI control code SU to the terminal.
     * New lines are added at the bottom. This is not supported by ANSI.SYS used in windows.
     * @param integer $lines number of lines to scroll up
     */
    public static function scrollUp($lines = 1)
    {
        echo "\033[" . (int) $lines . "S";
    }

    /**
     * Scrolls whole page down by sending ANSI control code SD to the terminal.
     * New lines are added at the top. This is not supported by ANSI.SYS used in windows.
     * @param integer $lines number of lines to scroll down
     */
    public static function scrollDown($lines = 1)
    {
        echo "\033[" . (int) $lines . "T";
    }

    /**
     * Saves the current cursor position by sending ANSI control code SCP to the terminal.
     * Position can then be restored with [[restoreCursorPosition()]].
     */
    public static function saveCursorPosition()
    {
        echo "\033[s";
    }

    /**
     * Restores the cursor position saved with [[saveCursorPosition()]] by sending ANSI control code RCP to the terminal.
     */
    public static function restoreCursorPosition()
    {
        echo "\033[u";
    }

    /**
     * Hides the cursor by sending ANSI DECTCEM code ?25l to the terminal.
     * Use [[showCursor()]] to bring it back.
     * Do not forget to show cursor when your application exits. Cursor might stay hidden in terminal after exit.
     */
    public static function hideCursor()
    {
        echo "\033[?25l";
    }

    /**
     * Will show a cursor again when it has been hidden by [[hideCursor()]]  by sending ANSI DECTCEM code ?25h to the terminal.
     */
    public static function showCursor()
    {
        echo "\033[?25h";
    }

    /**
     * Clears entire screen content by sending ANSI control code ED with argument 2 to the terminal.
     * Cursor position will not be changed.
     * **Note:** ANSI.SYS implementation used in windows will reset cursor position to upper left corner of the screen.
     */
    public static function clearScreen()
    {
        echo "\033[2J";
    }

    /**
     * Clears text from cursor to the beginning of the screen by sending ANSI control code ED with argument 1 to the terminal.
     * Cursor position will not be changed.
     */
    public static function clearScreenBeforeCursor()
    {
        echo "\033[1J";
    }

    /**
     * Clears text from cursor to the end of the screen by sending ANSI control code ED with argument 0 to the terminal.
     * Cursor position will not be changed.
     */
    public static function clearScreenAfterCursor()
    {
        echo "\033[0J";
    }

    /**
     * Clears the line, the cursor is currently on by sending ANSI control code EL with argument 2 to the terminal.
     * Cursor position will not be changed.
     */
    public static function clearLine()
    {
        echo "\033[2K";
    }

    /**
     * Clears text from cursor position to the beginning of the line by sending ANSI control code EL with argument 1 to the terminal.
     * Cursor position will not be changed.
     */
    public static function clearLineBeforeCursor()
    {
        echo "\033[1K";
    }

    /**
     * Clears text from cursor position to the end of the line by sending ANSI control code EL with argument 0 to the terminal.
     * Cursor position will not be changed.
     */
    public static function clearLineAfterCursor()
    {
        echo "\033[0K";
    }

    /**
     * Returns the ANSI format code.
     *
236 237 238
     * @param array $format An array containing formatting values.
     * You can pass any of the FG_*, BG_* and TEXT_* constants
     * and also [[xtermFgColor]] and [[xtermBgColor]] to specify a format.
239 240 241 242 243 244 245 246 247 248 249
     * @return string The ANSI format code according to the given formatting constants.
     */
    public static function ansiFormatCode($format)
    {
        return "\033[" . implode(';', $format) . 'm';
    }

    /**
     * Echoes an ANSI format code that affects the formatting of any text that is printed afterwards.
     *
     * @param array $format An array containing formatting values.
250 251
     * You can pass any of the FG_*, BG_* and TEXT_* constants
     * and also [[xtermFgColor]] and [[xtermBgColor]] to specify a format.
252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
     * @see ansiFormatCode()
     * @see endAnsiFormat()
     */
    public static function beginAnsiFormat($format)
    {
        echo "\033[" . implode(';', $format) . 'm';
    }

    /**
     * Resets any ANSI format set by previous method [[beginAnsiFormat()]]
     * Any output after this will have default text format.
     * This is equal to calling
     *
     * ```php
     * echo Console::ansiFormatCode([Console::RESET])
     * ```
     */
    public static function endAnsiFormat()
    {
        echo "\033[0m";
    }

    /**
     * Will return a string formatted with the given ANSI style
     *
277 278 279 280
     * @param string $string the string to be formatted
     * @param array $format An array containing formatting values.
     * You can pass any of the FG_*, BG_* and TEXT_* constants
     * and also [[xtermFgColor]] and [[xtermBgColor]] to specify a format.
281 282 283 284 285 286 287 288 289 290 291 292 293 294
     * @return string
     */
    public static function ansiFormat($string, $format = [])
    {
        $code = implode(';', $format);

        return "\033[0m" . ($code !== '' ? "\033[" . $code . "m" : '') . $string . "\033[0m";
    }

    /**
     * Returns the ansi format code for xterm foreground color.
     * You can pass the return value of this to one of the formatting methods:
     * [[ansiFormat]], [[ansiFormatCode]], [[beginAnsiFormat]]
     *
295
     * @param integer $colorCode xterm color code
296 297 298 299 300 301 302 303 304 305 306 307 308
     * @return string
     * @see http://en.wikipedia.org/wiki/Talk:ANSI_escape_code#xterm-256colors
     */
    public static function xtermFgColor($colorCode)
    {
        return '38;5;' . $colorCode;
    }

    /**
     * Returns the ansi format code for xterm background color.
     * You can pass the return value of this to one of the formatting methods:
     * [[ansiFormat]], [[ansiFormatCode]], [[beginAnsiFormat]]
     *
309
     * @param integer $colorCode xterm color code
310 311 312 313 314 315 316 317 318 319 320
     * @return string
     * @see http://en.wikipedia.org/wiki/Talk:ANSI_escape_code#xterm-256colors
     */
    public static function xtermBgColor($colorCode)
    {
        return '48;5;' . $colorCode;
    }

    /**
     * Strips ANSI control codes from a string
     *
321
     * @param string $string String to strip
322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343
     * @return string
     */
    public static function stripAnsiFormat($string)
    {
        return preg_replace('/\033\[[\d;?]*\w/', '', $string);
    }

    /**
     * Converts an ANSI formatted string to HTML
     * @param $string
     * @return mixed
     */
    // TODO rework/refactor according to https://github.com/yiisoft/yii2/issues/746
    public static function ansiToHtml($string)
    {
        $tags = 0;

        return preg_replace_callback(
            '/\033\[[\d;]+m/',
            function ($ansi) use (&$tags) {
                $styleA = [];
                foreach (explode(';', $ansi) as $controlCode) {
344
                    $style = [];
345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480
                    switch ($controlCode) {
                        case self::FG_BLACK:
                            $style = ['color' => '#000000'];
                            break;
                        case self::FG_BLUE:
                            $style = ['color' => '#000078'];
                            break;
                        case self::FG_CYAN:
                            $style = ['color' => '#007878'];
                            break;
                        case self::FG_GREEN:
                            $style = ['color' => '#007800'];
                            break;
                        case self::FG_GREY:
                            $style = ['color' => '#787878'];
                            break;
                        case self::FG_PURPLE:
                            $style = ['color' => '#780078'];
                            break;
                        case self::FG_RED:
                            $style = ['color' => '#780000'];
                            break;
                        case self::FG_YELLOW:
                            $style = ['color' => '#787800'];
                            break;
                        case self::BG_BLACK:
                            $style = ['background-color' => '#000000'];
                            break;
                        case self::BG_BLUE:
                            $style = ['background-color' => '#000078'];
                            break;
                        case self::BG_CYAN:
                            $style = ['background-color' => '#007878'];
                            break;
                        case self::BG_GREEN:
                            $style = ['background-color' => '#007800'];
                            break;
                        case self::BG_GREY:
                            $style = ['background-color' => '#787878'];
                            break;
                        case self::BG_PURPLE:
                            $style = ['background-color' => '#780078'];
                            break;
                        case self::BG_RED:
                            $style = ['background-color' => '#780000'];
                            break;
                        case self::BG_YELLOW:
                            $style = ['background-color' => '#787800'];
                            break;
                        case self::BOLD:
                            $style = ['font-weight' => 'bold'];
                            break;
                        case self::ITALIC:
                            $style = ['font-style' => 'italic'];
                            break;
                        case self::UNDERLINE:
                            $style = ['text-decoration' => ['underline']];
                            break;
                        case self::OVERLINED:
                            $style = ['text-decoration' => ['overline']];
                            break;
                        case self::CROSSED_OUT:
                            $style = ['text-decoration' => ['line-through']];
                            break;
                        case self::BLINK:
                            $style = ['text-decoration' => ['blink']];
                            break;
                        case self::NEGATIVE: // ???
                        case self::CONCEALED:
                        case self::ENCIRCLED:
                        case self::FRAMED:
                            // TODO allow resetting codes
                            break;
                        case 0: // ansi reset
                            $return = '';
                            for (; $tags > 0; $tags--) {
                                $return .= '</span>';
                            }

                            return $return;
                    }

                    $styleA = ArrayHelper::merge($styleA, $style);
                }
                $styleString = [];
                foreach ($styleA as $name => $content) {
                    if ($name === 'text-decoration') {
                        $content = implode(' ', $content);
                    }
                    $styleString[] = $name . ':' . $content;
                }
                $tags++;

                return '<span' . (!empty($styleString) ? 'style="' . implode(';', $styleString) : '') . '>';
            },
            $string
        );
    }

    // TODO rework/refactor according to https://github.com/yiisoft/yii2/issues/746
    public function markdownToAnsi()
    {
        // TODO implement
    }

    /**
     * Converts a string to ansi formatted by replacing patterns like %y (for yellow) with ansi control codes
     *
     * Uses almost the same syntax as https://github.com/pear/Console_Color2/blob/master/Console/Color2.php
     * The conversion table is: ('bold' meaning 'light' on some
     * terminals). It's almost the same conversion table irssi uses.
     * <pre>
     *                  text      text            background
     *      ------------------------------------------------
     *      %k %K %0    black     dark grey       black
     *      %r %R %1    red       bold red        red
     *      %g %G %2    green     bold green      green
     *      %y %Y %3    yellow    bold yellow     yellow
     *      %b %B %4    blue      bold blue       blue
     *      %m %M %5    magenta   bold magenta    magenta
     *      %p %P       magenta (think: purple)
     *      %c %C %6    cyan      bold cyan       cyan
     *      %w %W %7    white     bold white      white
     *
     *      %F     Blinking, Flashing
     *      %U     Underline
     *      %8     Reverse
     *      %_,%9  Bold
     *
     *      %n     Resets the color
     *      %%     A single %
     * </pre>
     * First param is the string to convert, second is an optional flag if
     * colors should be used. It defaults to true, if set to false, the
     * colorcodes will just be removed (And %% will be transformed into %)
     *
481 482
     * @param string $string String to convert
     * @param boolean $colored Should the string be colored?
483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561
     * @return string
     */
    // TODO rework/refactor according to https://github.com/yiisoft/yii2/issues/746
    public static function renderColoredString($string, $colored = true)
    {
        static $conversions = [
            '%y' => [self::FG_YELLOW],
            '%g' => [self::FG_GREEN],
            '%b' => [self::FG_BLUE],
            '%r' => [self::FG_RED],
            '%p' => [self::FG_PURPLE],
            '%m' => [self::FG_PURPLE],
            '%c' => [self::FG_CYAN],
            '%w' => [self::FG_GREY],
            '%k' => [self::FG_BLACK],
            '%n' => [0], // reset
            '%Y' => [self::FG_YELLOW, self::BOLD],
            '%G' => [self::FG_GREEN, self::BOLD],
            '%B' => [self::FG_BLUE, self::BOLD],
            '%R' => [self::FG_RED, self::BOLD],
            '%P' => [self::FG_PURPLE, self::BOLD],
            '%M' => [self::FG_PURPLE, self::BOLD],
            '%C' => [self::FG_CYAN, self::BOLD],
            '%W' => [self::FG_GREY, self::BOLD],
            '%K' => [self::FG_BLACK, self::BOLD],
            '%N' => [0, self::BOLD],
            '%3' => [self::BG_YELLOW],
            '%2' => [self::BG_GREEN],
            '%4' => [self::BG_BLUE],
            '%1' => [self::BG_RED],
            '%5' => [self::BG_PURPLE],
            '%6' => [self::BG_PURPLE],
            '%7' => [self::BG_CYAN],
            '%0' => [self::BG_GREY],
            '%F' => [self::BLINK],
            '%U' => [self::UNDERLINE],
            '%8' => [self::NEGATIVE],
            '%9' => [self::BOLD],
            '%_' => [self::BOLD],
        ];

        if ($colored) {
            $string = str_replace('%%', '% ', $string);
            foreach ($conversions as $key => $value) {
                $string = str_replace(
                    $key,
                    static::ansiFormatCode($value),
                    $string
                );
            }
            $string = str_replace('% ', '%', $string);
        } else {
            $string = preg_replace('/%((%)|.)/', '$2', $string);
        }

        return $string;
    }

    /**
     * Escapes % so they don't get interpreted as color codes when
     * the string is parsed by [[renderColoredString]]
     *
     * @param string $string String to escape
     *
     * @access public
     * @return string
     */
    // TODO rework/refactor according to https://github.com/yiisoft/yii2/issues/746
    public static function escape($string)
    {
        return str_replace('%', '%%', $string);
    }

    /**
     * Returns true if the stream supports colorization. ANSI colors are disabled if not supported by the stream.
     *
     * - windows without ansicon
     * - not tty consoles
     *
562
     * @param mixed $stream
563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583
     * @return boolean true if the stream supports ANSI colors, otherwise false.
     */
    public static function streamSupportsAnsiColors($stream)
    {
        return DIRECTORY_SEPARATOR == '\\'
            ? getenv('ANSICON') !== false || getenv('ConEmuANSI') === 'ON'
            : function_exists('posix_isatty') && @posix_isatty($stream);
    }

    /**
     * Returns true if the console is running on windows
     * @return bool
     */
    public static function isRunningOnWindows()
    {
        return DIRECTORY_SEPARATOR == '\\';
    }

    /**
     * Usage: list($width, $height) = ConsoleHelper::getScreenSize();
     *
584 585 586
     * @param boolean $refresh whether to force checking and not re-use cached size value.
     * This is useful to detect changing window size while the application is running but may
     * not get up to date values on every terminal.
587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625
     * @return array|boolean An array of ($width, $height) or false when it was not able to determine size.
     */
    public static function getScreenSize($refresh = false)
    {
        static $size;
        if ($size !== null && !$refresh) {
            return $size;
        }

        if (static::isRunningOnWindows()) {
            $output = [];
            exec('mode con', $output);
            if (isset($output) && strpos($output[1], 'CON') !== false) {
                return $size = [(int) preg_replace('~[^0-9]~', '', $output[3]), (int) preg_replace('~[^0-9]~', '', $output[4])];
            }
        } else {
            // try stty if available
            $stty = [];
            if (exec('stty -a 2>&1', $stty) && preg_match('/rows\s+(\d+);\s*columns\s+(\d+);/mi', implode(' ', $stty), $matches)) {
                return $size = [$matches[2], $matches[1]];
            }

            // fallback to tput, which may not be updated on terminal resize
            if (($width = (int) exec('tput cols 2>&1')) > 0 && ($height = (int) exec('tput lines 2>&1')) > 0) {
                return $size = [$width, $height];
            }

            // fallback to ENV variables, which may not be updated on terminal resize
            if (($width = (int) getenv('COLUMNS')) > 0 && ($height = (int) getenv('LINES')) > 0) {
                return $size = [$width, $height];
            }
        }

        return $size = false;
    }

    /**
     * Gets input from STDIN and returns a string right-trimmed for EOLs.
     *
626 627
     * @param boolean $raw If set to true, returns the raw string without trimming
     * @return string the string read from stdin
628 629 630
     */
    public static function stdin($raw = false)
    {
631
        return $raw ? fgets(\STDIN) : rtrim(fgets(\STDIN), PHP_EOL);
632 633 634 635 636
    }

    /**
     * Prints a string to STDOUT.
     *
637
     * @param string $string the string to print
638 639 640 641
     * @return int|boolean Number of bytes printed or false on error
     */
    public static function stdout($string)
    {
642
        return fwrite(\STDOUT, $string);
643 644 645 646 647
    }

    /**
     * Prints a string to STDERR.
     *
648
     * @param string $string the string to print
649 650 651 652
     * @return int|boolean Number of bytes printed or false on error
     */
    public static function stderr($string)
    {
653
        return fwrite(\STDERR, $string);
654 655 656 657 658 659
    }

    /**
     * Asks the user for input. Ends when the user types a carriage return (PHP_EOL). Optionally, It also provides a
     * prompt.
     *
660
     * @param string $prompt the prompt to display before waiting for input (optional)
661 662 663 664 665 666 667 668 669 670 671 672 673 674
     * @return string the user's input
     */
    public static function input($prompt = null)
    {
        if (isset($prompt)) {
            static::stdout($prompt);
        }

        return static::stdin();
    }

    /**
     * Prints text to STDOUT appended with a carriage return (PHP_EOL).
     *
675
     * @param string $string the text to print
676 677 678 679 680 681 682 683 684 685
     * @return integer|boolean number of bytes printed or false on error.
     */
    public static function output($string = null)
    {
        return static::stdout($string . PHP_EOL);
    }

    /**
     * Prints text to STDERR appended with a carriage return (PHP_EOL).
     *
686
     * @param string $string the text to print
687 688 689 690 691 692 693 694 695 696
     * @return integer|boolean number of bytes printed or false on error.
     */
    public static function error($string = null)
    {
        return static::stderr($string . PHP_EOL);
    }

    /**
     * Prompts the user for input and validates it
     *
697 698 699 700 701 702 703 704 705 706
     * @param string $text prompt string
     * @param array $options the options to validate the input:
     *
     * - `required`: whether it is required or not
     * - `default`: default value if no input is inserted by the user
     * - `pattern`: regular expression pattern to validate user input
     * - `validator`: a callable function to validate input. The function must accept two parameters:
     * - `input`: the user input to validate
     * - `error`: the error value passed by reference if validation failed.
     *
707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
     * @return string the user input
     */
    public static function prompt($text, $options = [])
    {
        $options = ArrayHelper::merge(
            [
                'required'  => false,
                'default'   => null,
                'pattern'   => null,
                'validator' => null,
                'error'     => 'Invalid input.',
            ],
            $options
        );
        $error   = null;

        top:
        $input = $options['default']
            ? static::input("$text [" . $options['default'] . ']: ')
            : static::input("$text: ");

        if (!strlen($input)) {
            if (isset($options['default'])) {
                $input = $options['default'];
            } elseif ($options['required']) {
                static::output($options['error']);
                goto top;
            }
        } elseif ($options['pattern'] && !preg_match($options['pattern'], $input)) {
            static::output($options['error']);
            goto top;
        } elseif ($options['validator'] &&
            !call_user_func_array($options['validator'], [$input, &$error])
        ) {
            static::output(isset($error) ? $error : $options['error']);
            goto top;
        }

        return $input;
    }

    /**
     * Asks user to confirm by typing y or n.
     *
751 752
     * @param string $message to echo out before waiting for user input
     * @param boolean $default this value is returned if no selection is made.
753 754 755 756 757 758 759 760 761 762 763 764 765 766
     * @return boolean whether user confirmed
     */
    public static function confirm($message, $default = true)
    {
        echo $message . ' (yes|no) [' . ($default ? 'yes' : 'no') . ']:';
        $input = trim(static::stdin());

        return empty($input) ? $default : !strncasecmp($input, 'y', 1);
    }

    /**
     * Gives the user an option to choose from. Giving '?' as an input will show
     * a list of options to choose from and their explanations.
     *
767 768
     * @param string $prompt the prompt message
     * @param array $options Key-value array of options to choose from
769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819
     *
     * @return string An option character the user chose
     */
    public static function select($prompt, $options = [])
    {
        top:
        static::stdout("$prompt [" . implode(',', array_keys($options)) . ",?]: ");
        $input = static::stdin();
        if ($input === '?') {
            foreach ($options as $key => $value) {
                static::output(" $key - $value");
            }
            static::output(" ? - Show help");
            goto top;
        } elseif (!in_array($input, array_keys($options))) {
            goto top;
        }

        return $input;
    }

    private static $_progressStart;
    private static $_progressWidth;
    private static $_progressPrefix;

    /**
     * Starts display of a progress bar on screen.
     *
     * This bar will be updated by [[updateProgress()]] and my be ended by [[endProgress()]].
     *
     * The following example shows a simple usage of a progress bar:
     *
     * ```php
     * Console::startProgress(0, 1000);
     * for ($n = 1; $n <= 1000; $n++) {
     *     usleep(1000);
     *     Console::updateProgress($n, 1000);
     * }
     * Console::endProgress();
     * ```
     *
     * Git clone like progress (showing only status information):
     * ```php
     * Console::startProgress(0, 1000, 'Counting objects: ', false);
     * for ($n = 1; $n <= 1000; $n++) {
     *     usleep(1000);
     *     Console::updateProgress($n, 1000);
     * }
     * Console::endProgress("done." . PHP_EOL);
     * ```
     *
820 821 822 823 824 825 826 827 828
     * @param integer $done the number of items that are completed.
     * @param integer $total the total value of items that are to be done.
     * @param string $prefix an optional string to display before the progress bar.
     * Default to empty string which results in no prefix to be displayed.
     * @param integer|boolean $width optional width of the progressbar. This can be an integer representing
     * the number of characters to display for the progress bar or a float between 0 and 1 representing the
     * percentage of screen with the progress bar may take. It can also be set to false to disable the
     * bar and only show progress information like percent, number of items and ETA.
     * If not set, the bar will be as wide as the screen. Screen size will be detected using [[getScreenSize()]].
829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844
     * @see startProgress
     * @see updateProgress
     * @see endProgress
     */
    public static function startProgress($done, $total, $prefix = '', $width = null)
    {
        self::$_progressStart = time();
        self::$_progressWidth = $width;
        self::$_progressPrefix = $prefix;

        static::updateProgress($done, $total);
    }

    /**
     * Updates a progress bar that has been started by [[startProgress()]].
     *
845 846 847 848 849
     * @param integer $done the number of items that are completed.
     * @param integer $total the total value of items that are to be done.
     * @param string $prefix an optional string to display before the progress bar.
     * Defaults to null meaning the prefix specified by [[startProgress()]] will be used.
     * If prefix is specified it will update the prefix that will be used by later calls.
850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908
     * @see startProgress
     * @see endProgress
     */
    public static function updateProgress($done, $total, $prefix = null)
    {
        $width = self::$_progressWidth;
        if ($width === false) {
            $width = 0;
        } else {
            $screenSize = static::getScreenSize(true);
            if ($screenSize === false && $width < 1) {
                $width = 0;
            } elseif ($width === null) {
                $width = $screenSize[0];
            } elseif ($width > 0 && $width < 1) {
                $width = floor($screenSize[0] * $width);
            }
        }
        if ($prefix === null) {
            $prefix = self::$_progressPrefix;
        } else {
            self::$_progressPrefix = $prefix;
        }
        $width -= mb_strlen($prefix);

        $percent = ($total == 0) ? 1 : $done / $total;
        $info = sprintf("%d%% (%d/%d)", $percent * 100, $done, $total);

        if ($done > $total || $done == 0) {
            $info .= ' ETA: n/a';
        } elseif ($done < $total) {
            $rate = (time() - self::$_progressStart) / $done;
            $info .= sprintf(' ETA: %d sec.', $rate * ($total - $done));
        }

        $width -= 3 + mb_strlen($info);
        // skipping progress bar on very small display or if forced to skip
        if ($width < 5) {
            static::stdout("\r$prefix$info   ");
        } else {
            if ($percent < 0) {
                $percent = 0;
            } elseif ($percent > 1) {
                $percent = 1;
            }
            $bar = floor($percent * $width);
            $status = str_repeat("=", $bar);
            if ($bar < $width) {
                $status .= ">";
                $status .= str_repeat(" ", $width - $bar - 1);
            }
            static::stdout("\r$prefix" . "[$status] $info");
        }
        flush();
    }

    /**
     * Ends a progress bar that has been started by [[startProgress()]].
     *
909 910 911 912 913
     * @param string|boolean $remove This can be `false` to leave the progress bar on screen and just print a newline.
     * If set to `true`, the line of the progress bar will be cleared. This may also be a string to be displayed instead
     * of the progress bar.
     * @param boolean $keepPrefix whether to keep the prefix that has been specified for the progressbar when progressbar
     * gets removed. Defaults to true.
914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932
     * @see startProgress
     * @see updateProgress
     */
    public static function endProgress($remove = false, $keepPrefix = true)
    {
        if ($remove === false) {
            static::stdout(PHP_EOL);
        } else {
            if (static::streamSupportsAnsiColors(STDOUT)) {
                static::clearLine();
            }
            static::stdout("\r" . ($keepPrefix ? self::$_progressPrefix : '') . (is_string($remove) ? $remove : ''));
        }
        flush();

        self::$_progressStart = null;
        self::$_progressWidth = null;
        self::$_progressPrefix = '';
    }
Qiang Xue committed
933
}