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Edit File : ProgressBar.php \| Size : 17.44 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\Console\Helper; use Symfony\Component\Console\Exception\LogicException; use Symfony\Component\Console\Output\ConsoleOutputInterface; use Symfony\Component\Console\Output\ConsoleSectionOutput; use Symfony\Component\Console\Output\OutputInterface; use Symfony\Component\Console\Terminal; /* * The ProgressBar provides helpers to display progress output. * * @author Fabien Potencier <fabien@symfony.com> * @author Chris Jones <leeked@gmail.com> / final class ProgressBar { private $barWidth = 28; private $barChar; private $emptyBarChar = '-'; private $progressChar = '>'; private $format; private $internalFormat; private $redrawFreq = 1; private $writeCount; private $lastWriteTime; private $minSecondsBetweenRedraws = 0; private $maxSecondsBetweenRedraws = 1; private $output; private $step = 0; private $max; private $startTime; private $stepWidth; private $percent = 0.0; private $formatLineCount; private $messages = []; private $overwrite = true; private $terminal; private $previousMessage; private static $formatters; private static $formats; /* * @param int $max Maximum steps (0 if unknown) / public function __construct(OutputInterface $output, int $max = 0, float $minSecondsBetweenRedraws = 0.1) { if ($output instanceof ConsoleOutputInterface) { $output = $output->getErrorOutput(); } $this->output = $output; $this->setMaxSteps($max); $this->terminal = new Terminal(); if (0 < $minSecondsBetweenRedraws) { $this->redrawFreq = null; $this->minSecondsBetweenRedraws = $minSecondsBetweenRedraws; } if (!$this->output->isDecorated()) { // disable overwrite when output does not support ANSI codes. $this->overwrite = false; // set a reasonable redraw frequency so output isn't flooded $this->redrawFreq = null; } $this->startTime = time(); } /* * Sets a placeholder formatter for a given name. * * This method also allow you to override an existing placeholder. * * @param string $name The placeholder name (including the delimiter char like %) * @param callable $callable A PHP callable / public static function setPlaceholderFormatterDefinition(string $name, callable $callable): void { if (!self::$formatters) { self::$formatters = self::initPlaceholderFormatters(); } self::$formatters[$name] = $callable; } /* * Gets the placeholder formatter for a given name. * * @param string $name The placeholder name (including the delimiter char like %) * * @return callable\|null A PHP callable / public static function getPlaceholderFormatterDefinition(string $name): ?callable { if (!self::$formatters) { self::$formatters = self::initPlaceholderFormatters(); } return isset(self::$formatters[$name]) ? self::$formatters[$name] : null; } /* * Sets a format for a given name. * * This method also allow you to override an existing format. * * @param string $name The format name * @param string $format A format string / public static function setFormatDefinition(string $name, string $format): void { if (!self::$formats) { self::$formats = self::initFormats(); } self::$formats[$name] = $format; } /* * Gets the format for a given name. * * @param string $name The format name * * @return string\|null A format string / public static function getFormatDefinition(string $name): ?string { if (!self::$formats) { self::$formats = self::initFormats(); } return isset(self::$formats[$name]) ? self::$formats[$name] : null; } /* * Associates a text with a named placeholder. * * The text is displayed when the progress bar is rendered but only * when the corresponding placeholder is part of the custom format line * (by wrapping the name with %). * * @param string $message The text to associate with the placeholder * @param string $name The name of the placeholder / public function setMessage(string $message, string $name = 'message') { $this->messages[$name] = $message; } public function getMessage(string $name = 'message') { return $this->messages[$name]; } public function getStartTime(): int { return $this->startTime; } public function getMaxSteps(): int { return $this->max; } public function getProgress(): int { return $this->step; } private function getStepWidth(): int { return $this->stepWidth; } public function getProgressPercent(): float { return $this->percent; } public function getBarOffset(): int { return floor($this->max ? $this->percent $this->barWidth : (null === $this->redrawFreq ? min(5, $this->barWidth / 15) * $this->writeCount : $this->step) % $this->barWidth); } public function setBarWidth(int $size) { $this->barWidth = max(1, $size); } public function getBarWidth(): int { return $this->barWidth; } public function setBarCharacter(string $char) { $this->barChar = $char; } public function getBarCharacter(): string { if (null === $this->barChar) { return $this->max ? '=' : $this->emptyBarChar; } return $this->barChar; } public function setEmptyBarCharacter(string $char) { $this->emptyBarChar = $char; } public function getEmptyBarCharacter(): string { return $this->emptyBarChar; } public function setProgressCharacter(string $char) { $this->progressChar = $char; } public function getProgressCharacter(): string { return $this->progressChar; } public function setFormat(string $format) { $this->format = null; $this->internalFormat = $format; } /** * Sets the redraw frequency. * * @param int\|float $freq The frequency in steps / public function setRedrawFrequency(?int $freq) { $this->redrawFreq = null !== $freq ? max(1, $freq) : null; } public function minSecondsBetweenRedraws(float $seconds): void { $this->minSecondsBetweenRedraws = $seconds; } public function maxSecondsBetweenRedraws(float $seconds): void { $this->maxSecondsBetweenRedraws = $seconds; } /* * Returns an iterator that will automatically update the progress bar when iterated. * * @param int\|null $max Number of steps to complete the bar (0 if indeterminate), if null it will be inferred from $iterable / public function iterate(iterable $iterable, int $max = null): iterable { $this->start($max ?? (is_countable($iterable) ? \count($iterable) : 0)); foreach ($iterable as $key => $value) { yield $key => $value; $this->advance(); } $this->finish(); } /* * Starts the progress output. * * @param int\|null $max Number of steps to complete the bar (0 if indeterminate), null to leave unchanged / public function start(int $max = null) { $this->startTime = time(); $this->step = 0; $this->percent = 0.0; if (null !== $max) { $this->setMaxSteps($max); } $this->display(); } /* * Advances the progress output X steps. * * @param int $step Number of steps to advance / public function advance(int $step = 1) { $this->setProgress($this->step + $step); } /* * Sets whether to overwrite the progressbar, false for new line. / public function setOverwrite(bool $overwrite) { $this->overwrite = $overwrite; } public function setProgress(int $step) { if ($this->max && $step > $this->max) { $this->max = $step; } elseif ($step < 0) { $step = 0; } $redrawFreq = $this->redrawFreq ?? (($this->max ?: 10) / 10); $prevPeriod = (int) ($this->step / $redrawFreq); $currPeriod = (int) ($step / $redrawFreq); $this->step = $step; $this->percent = $this->max ? (float) $this->step / $this->max : 0; $timeInterval = microtime(true) - $this->lastWriteTime; // Draw regardless of other limits if ($this->max === $step) { $this->display(); return; } // Throttling if ($timeInterval < $this->minSecondsBetweenRedraws) { return; } // Draw each step period, but not too late if ($prevPeriod !== $currPeriod \|\| $timeInterval >= $this->maxSecondsBetweenRedraws) { $this->display(); } } public function setMaxSteps(int $max) { $this->format = null; $this->max = max(0, $max); $this->stepWidth = $this->max ? Helper::strlen((string) $this->max) : 4; } /* * Finishes the progress output. / public function finish(): void { if (!$this->max) { $this->max = $this->step; } if ($this->step === $this->max && !$this->overwrite) { // prevent double 100% output return; } $this->setProgress($this->max); } /* * Outputs the current progress string. / public function display(): void { if (OutputInterface::VERBOSITY_QUIET === $this->output->getVerbosity()) { return; } if (null === $this->format) { $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat()); } $this->overwrite($this->buildLine()); } /* * Removes the progress bar from the current line. * * This is useful if you wish to write some output * while a progress bar is running. * Call display() to show the progress bar again. / public function clear(): void { if (!$this->overwrite) { return; } if (null === $this->format) { $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat()); } $this->overwrite(''); } private function setRealFormat(string $format) { // try to use the _nomax variant if available if (!$this->max && null !== self::getFormatDefinition($format.'_nomax')) { $this->format = self::getFormatDefinition($format.'_nomax'); } elseif (null !== self::getFormatDefinition($format)) { $this->format = self::getFormatDefinition($format); } else { $this->format = $format; } $this->formatLineCount = substr_count($this->format, "\n"); } /* * Overwrites a previous message to the output. / private function overwrite(string $message): void { if ($this->previousMessage === $message) { return; } $originalMessage = $message; if ($this->overwrite) { if (null !== $this->previousMessage) { if ($this->output instanceof ConsoleSectionOutput) { $lines = floor(Helper::strlen($message) / $this->terminal->getWidth()) + $this->formatLineCount + 1; $this->output->clear($lines); } else { // Erase previous lines if ($this->formatLineCount > 0) { $message = str_repeat("\x1B[1A\x1B[2K", $this->formatLineCount).$message; } // Move the cursor to the beginning of the line and erase the line $message = "\x0D\x1B[2K$message"; } } } elseif ($this->step > 0) { $message = \PHP_EOL.$message; } $this->previousMessage = $originalMessage; $this->lastWriteTime = microtime(true); $this->output->write($message); ++$this->writeCount; } private function determineBestFormat(): string { switch ($this->output->getVerbosity()) { // OutputInterface::VERBOSITY_QUIET: display is disabled anyway case OutputInterface::VERBOSITY_VERBOSE: return $this->max ? 'verbose' : 'verbose_nomax'; case OutputInterface::VERBOSITY_VERY_VERBOSE: return $this->max ? 'very_verbose' : 'very_verbose_nomax'; case OutputInterface::VERBOSITY_DEBUG: return $this->max ? 'debug' : 'debug_nomax'; default: return $this->max ? 'normal' : 'normal_nomax'; } } private static function initPlaceholderFormatters(): array { return [ 'bar' => function (self $bar, OutputInterface $output) { $completeBars = $bar->getBarOffset(); $display = str_repeat($bar->getBarCharacter(), $completeBars); if ($completeBars < $bar->getBarWidth()) { $emptyBars = $bar->getBarWidth() - $completeBars - Helper::strlenWithoutDecoration($output->getFormatter(), $bar->getProgressCharacter()); $display .= $bar->getProgressCharacter().str_repeat($bar->getEmptyBarCharacter(), $emptyBars); } return $display; }, 'elapsed' => function (self $bar) { return Helper::formatTime(time() - $bar->getStartTime()); }, 'remaining' => function (self $bar) { if (!$bar->getMaxSteps()) { throw new LogicException('Unable to display the remaining time if the maximum number of steps is not set.'); } if (!$bar->getProgress()) { $remaining = 0; } else { $remaining = round((time() - $bar->getStartTime()) / $bar->getProgress() ($bar->getMaxSteps() - $bar->getProgress())); } return Helper::formatTime($remaining); }, 'estimated' => function (self $bar) { if (!$bar->getMaxSteps()) { throw new LogicException('Unable to display the estimated time if the maximum number of steps is not set.'); } if (!$bar->getProgress()) { $estimated = 0; } else { $estimated = round((time() - $bar->getStartTime()) / $bar->getProgress() * $bar->getMaxSteps()); } return Helper::formatTime($estimated); }, 'memory' => function (self $bar) { return Helper::formatMemory(memory_get_usage(true)); }, 'current' => function (self $bar) { return str_pad($bar->getProgress(), $bar->getStepWidth(), ' ', \STR_PAD_LEFT); }, 'max' => function (self $bar) { return $bar->getMaxSteps(); }, 'percent' => function (self $bar) { return floor($bar->getProgressPercent() * 100); }, ]; } private static function initFormats(): array { return [ 'normal' => ' %current%/%max% [%bar%] %percent:3s%%', 'normal_nomax' => ' %current% [%bar%]', 'verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%', 'verbose_nomax' => ' %current% [%bar%] %elapsed:6s%', 'very_verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s%', 'very_verbose_nomax' => ' %current% [%bar%] %elapsed:6s%', 'debug' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s% %memory:6s%', 'debug_nomax' => ' %current% [%bar%] %elapsed:6s% %memory:6s%', ]; } private function buildLine(): string { $regex = "{%([a-z\-_]+)(?:\:([^%]+))?%}i"; $callback = function ($matches) { if ($formatter = $this::getPlaceholderFormatterDefinition($matches[1])) { $text = $formatter($this, $this->output); } elseif (isset($this->messages[$matches[1]])) { $text = $this->messages[$matches[1]]; } else { return $matches[0]; } if (isset($matches[2])) { $text = sprintf('%'.$matches[2], $text); } return $text; }; $line = preg_replace_callback($regex, $callback, $this->format); // gets string length for each sub line with multiline format $linesLength = array_map(function ($subLine) { return Helper::strlenWithoutDecoration($this->output->getFormatter(), rtrim($subLine, "\r")); }, explode("\n", $line)); $linesWidth = max($linesLength); $terminalWidth = $this->terminal->getWidth(); if ($linesWidth <= $terminalWidth) { return $line; } $this->setBarWidth($this->barWidth - $linesWidth + $terminalWidth); return preg_replace_callback($regex, $callback, $this->format); } } Back

Edit File : ProgressBar.php | Size : 17.44 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console\Helper;

use Symfony\Component\Console\Exception\LogicException;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\ConsoleSectionOutput;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Terminal;

/**
 * The ProgressBar provides helpers to display progress output.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 * @author Chris Jones <leeked@gmail.com>
 */
final class ProgressBar
{
    private $barWidth = 28;
    private $barChar;
    private $emptyBarChar = '-';
    private $progressChar = '>';
    private $format;
    private $internalFormat;
    private $redrawFreq = 1;
    private $writeCount;
    private $lastWriteTime;
    private $minSecondsBetweenRedraws = 0;
    private $maxSecondsBetweenRedraws = 1;
    private $output;
    private $step = 0;
    private $max;
    private $startTime;
    private $stepWidth;
    private $percent = 0.0;
    private $formatLineCount;
    private $messages = [];
    private $overwrite = true;
    private $terminal;
    private $previousMessage;

private static $formatters;
    private static $formats;

/**
     * @param int $max Maximum steps (0 if unknown)
     */
    public function __construct(OutputInterface $output, int $max = 0, float $minSecondsBetweenRedraws = 0.1)
    {
        if ($output instanceof ConsoleOutputInterface) {
            $output = $output->getErrorOutput();
        }

$this->output = $output;
        $this->setMaxSteps($max);
        $this->terminal = new Terminal();

if (0 < $minSecondsBetweenRedraws) {
            $this->redrawFreq = null;
            $this->minSecondsBetweenRedraws = $minSecondsBetweenRedraws;
        }

if (!$this->output->isDecorated()) {
            // disable overwrite when output does not support ANSI codes.
            $this->overwrite = false;

// set a reasonable redraw frequency so output isn't flooded
            $this->redrawFreq = null;
        }

$this->startTime = time();
    }

/**
     * Sets a placeholder formatter for a given name.
     *
     * This method also allow you to override an existing placeholder.
     *
     * @param string   $name     The placeholder name (including the delimiter char like %)
     * @param callable $callable A PHP callable
     */
    public static function setPlaceholderFormatterDefinition(string $name, callable $callable): void
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

self::$formatters[$name] = $callable;
    }

/**
     * Gets the placeholder formatter for a given name.
     *
     * @param string $name The placeholder name (including the delimiter char like %)
     *
     * @return callable|null A PHP callable
     */
    public static function getPlaceholderFormatterDefinition(string $name): ?callable
    {
        if (!self::$formatters) {
            self::$formatters = self::initPlaceholderFormatters();
        }

return isset(self::$formatters[$name]) ? self::$formatters[$name] : null;
    }

/**
     * Sets a format for a given name.
     *
     * This method also allow you to override an existing format.
     *
     * @param string $name   The format name
     * @param string $format A format string
     */
    public static function setFormatDefinition(string $name, string $format): void
    {
        if (!self::$formats) {
            self::$formats = self::initFormats();
        }

self::$formats[$name] = $format;
    }

/**
     * Gets the format for a given name.
     *
     * @param string $name The format name
     *
     * @return string|null A format string
     */
    public static function getFormatDefinition(string $name): ?string
    {
        if (!self::$formats) {
            self::$formats = self::initFormats();
        }

return isset(self::$formats[$name]) ? self::$formats[$name] : null;
    }

/**
     * Associates a text with a named placeholder.
     *
     * The text is displayed when the progress bar is rendered but only
     * when the corresponding placeholder is part of the custom format line
     * (by wrapping the name with %).
     *
     * @param string $message The text to associate with the placeholder
     * @param string $name    The name of the placeholder
     */
    public function setMessage(string $message, string $name = 'message')
    {
        $this->messages[$name] = $message;
    }

public function getMessage(string $name = 'message')
    {
        return $this->messages[$name];
    }

public function getStartTime(): int
    {
        return $this->startTime;
    }

public function getMaxSteps(): int
    {
        return $this->max;
    }

public function getProgress(): int
    {
        return $this->step;
    }

private function getStepWidth(): int
    {
        return $this->stepWidth;
    }

public function getProgressPercent(): float
    {
        return $this->percent;
    }

public function getBarOffset(): int
    {
        return floor($this->max ? $this->percent * $this->barWidth : (null === $this->redrawFreq ? min(5, $this->barWidth / 15) * $this->writeCount : $this->step) % $this->barWidth);
    }

public function setBarWidth(int $size)
    {
        $this->barWidth = max(1, $size);
    }

public function getBarWidth(): int
    {
        return $this->barWidth;
    }

public function setBarCharacter(string $char)
    {
        $this->barChar = $char;
    }

public function getBarCharacter(): string
    {
        if (null === $this->barChar) {
            return $this->max ? '=' : $this->emptyBarChar;
        }

return $this->barChar;
    }

public function setEmptyBarCharacter(string $char)
    {
        $this->emptyBarChar = $char;
    }

public function getEmptyBarCharacter(): string
    {
        return $this->emptyBarChar;
    }

public function setProgressCharacter(string $char)
    {
        $this->progressChar = $char;
    }

public function getProgressCharacter(): string
    {
        return $this->progressChar;
    }

public function setFormat(string $format)
    {
        $this->format = null;
        $this->internalFormat = $format;
    }

/**
     * Sets the redraw frequency.
     *
     * @param int|float $freq The frequency in steps
     */
    public function setRedrawFrequency(?int $freq)
    {
        $this->redrawFreq = null !== $freq ? max(1, $freq) : null;
    }

public function minSecondsBetweenRedraws(float $seconds): void
    {
        $this->minSecondsBetweenRedraws = $seconds;
    }

public function maxSecondsBetweenRedraws(float $seconds): void
    {
        $this->maxSecondsBetweenRedraws = $seconds;
    }

/**
     * Returns an iterator that will automatically update the progress bar when iterated.
     *
     * @param int|null $max Number of steps to complete the bar (0 if indeterminate), if null it will be inferred from $iterable
     */
    public function iterate(iterable $iterable, int $max = null): iterable
    {
        $this->start($max ?? (is_countable($iterable) ? \count($iterable) : 0));

foreach ($iterable as $key => $value) {
            yield $key => $value;

$this->advance();
        }

$this->finish();
    }

/**
     * Starts the progress output.
     *
     * @param int|null $max Number of steps to complete the bar (0 if indeterminate), null to leave unchanged
     */
    public function start(int $max = null)
    {
        $this->startTime = time();
        $this->step = 0;
        $this->percent = 0.0;

if (null !== $max) {
            $this->setMaxSteps($max);
        }

$this->display();
    }

/**
     * Advances the progress output X steps.
     *
     * @param int $step Number of steps to advance
     */
    public function advance(int $step = 1)
    {
        $this->setProgress($this->step + $step);
    }

/**
     * Sets whether to overwrite the progressbar, false for new line.
     */
    public function setOverwrite(bool $overwrite)
    {
        $this->overwrite = $overwrite;
    }

public function setProgress(int $step)
    {
        if ($this->max && $step > $this->max) {
            $this->max = $step;
        } elseif ($step < 0) {
            $step = 0;
        }

$redrawFreq = $this->redrawFreq ?? (($this->max ?: 10) / 10);
        $prevPeriod = (int) ($this->step / $redrawFreq);
        $currPeriod = (int) ($step / $redrawFreq);
        $this->step = $step;
        $this->percent = $this->max ? (float) $this->step / $this->max : 0;
        $timeInterval = microtime(true) - $this->lastWriteTime;

// Draw regardless of other limits
        if ($this->max === $step) {
            $this->display();

return;
        }

// Throttling
        if ($timeInterval < $this->minSecondsBetweenRedraws) {
            return;
        }

// Draw each step period, but not too late
        if ($prevPeriod !== $currPeriod || $timeInterval >= $this->maxSecondsBetweenRedraws) {
            $this->display();
        }
    }

public function setMaxSteps(int $max)
    {
        $this->format = null;
        $this->max = max(0, $max);
        $this->stepWidth = $this->max ? Helper::strlen((string) $this->max) : 4;
    }

/**
     * Finishes the progress output.
     */
    public function finish(): void
    {
        if (!$this->max) {
            $this->max = $this->step;
        }

if ($this->step === $this->max && !$this->overwrite) {
            // prevent double 100% output
            return;
        }

$this->setProgress($this->max);
    }

/**
     * Outputs the current progress string.
     */
    public function display(): void
    {
        if (OutputInterface::VERBOSITY_QUIET === $this->output->getVerbosity()) {
            return;
        }

if (null === $this->format) {
            $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat());
        }

$this->overwrite($this->buildLine());
    }

/**
     * Removes the progress bar from the current line.
     *
     * This is useful if you wish to write some output
     * while a progress bar is running.
     * Call display() to show the progress bar again.
     */
    public function clear(): void
    {
        if (!$this->overwrite) {
            return;
        }

if (null === $this->format) {
            $this->setRealFormat($this->internalFormat ?: $this->determineBestFormat());
        }

$this->overwrite('');
    }

private function setRealFormat(string $format)
    {
        // try to use the _nomax variant if available
        if (!$this->max && null !== self::getFormatDefinition($format.'_nomax')) {
            $this->format = self::getFormatDefinition($format.'_nomax');
        } elseif (null !== self::getFormatDefinition($format)) {
            $this->format = self::getFormatDefinition($format);
        } else {
            $this->format = $format;
        }

$this->formatLineCount = substr_count($this->format, "\n");
    }

/**
     * Overwrites a previous message to the output.
     */
    private function overwrite(string $message): void
    {
        if ($this->previousMessage === $message) {
            return;
        }

$originalMessage = $message;

if ($this->overwrite) {
            if (null !== $this->previousMessage) {
                if ($this->output instanceof ConsoleSectionOutput) {
                    $lines = floor(Helper::strlen($message) / $this->terminal->getWidth()) + $this->formatLineCount + 1;
                    $this->output->clear($lines);
                } else {
                    // Erase previous lines
                    if ($this->formatLineCount > 0) {
                        $message = str_repeat("\x1B[1A\x1B[2K", $this->formatLineCount).$message;
                    }

// Move the cursor to the beginning of the line and erase the line
                    $message = "\x0D\x1B[2K$message";
                }
            }
        } elseif ($this->step > 0) {
            $message = \PHP_EOL.$message;
        }

$this->previousMessage = $originalMessage;
        $this->lastWriteTime = microtime(true);

$this->output->write($message);
        ++$this->writeCount;
    }

private function determineBestFormat(): string
    {
        switch ($this->output->getVerbosity()) {
            // OutputInterface::VERBOSITY_QUIET: display is disabled anyway
            case OutputInterface::VERBOSITY_VERBOSE:
                return $this->max ? 'verbose' : 'verbose_nomax';
            case OutputInterface::VERBOSITY_VERY_VERBOSE:
                return $this->max ? 'very_verbose' : 'very_verbose_nomax';
            case OutputInterface::VERBOSITY_DEBUG:
                return $this->max ? 'debug' : 'debug_nomax';
            default:
                return $this->max ? 'normal' : 'normal_nomax';
        }
    }

private static function initPlaceholderFormatters(): array
    {
        return [
            'bar' => function (self $bar, OutputInterface $output) {
                $completeBars = $bar->getBarOffset();
                $display = str_repeat($bar->getBarCharacter(), $completeBars);
                if ($completeBars < $bar->getBarWidth()) {
                    $emptyBars = $bar->getBarWidth() - $completeBars - Helper::strlenWithoutDecoration($output->getFormatter(), $bar->getProgressCharacter());
                    $display .= $bar->getProgressCharacter().str_repeat($bar->getEmptyBarCharacter(), $emptyBars);
                }

return $display;
            },
            'elapsed' => function (self $bar) {
                return Helper::formatTime(time() - $bar->getStartTime());
            },
            'remaining' => function (self $bar) {
                if (!$bar->getMaxSteps()) {
                    throw new LogicException('Unable to display the remaining time if the maximum number of steps is not set.');
                }

if (!$bar->getProgress()) {
                    $remaining = 0;
                } else {
                    $remaining = round((time() - $bar->getStartTime()) / $bar->getProgress() * ($bar->getMaxSteps() - $bar->getProgress()));
                }

return Helper::formatTime($remaining);
            },
            'estimated' => function (self $bar) {
                if (!$bar->getMaxSteps()) {
                    throw new LogicException('Unable to display the estimated time if the maximum number of steps is not set.');
                }

if (!$bar->getProgress()) {
                    $estimated = 0;
                } else {
                    $estimated = round((time() - $bar->getStartTime()) / $bar->getProgress() * $bar->getMaxSteps());
                }

return Helper::formatTime($estimated);
            },
            'memory' => function (self $bar) {
                return Helper::formatMemory(memory_get_usage(true));
            },
            'current' => function (self $bar) {
                return str_pad($bar->getProgress(), $bar->getStepWidth(), ' ', \STR_PAD_LEFT);
            },
            'max' => function (self $bar) {
                return $bar->getMaxSteps();
            },
            'percent' => function (self $bar) {
                return floor($bar->getProgressPercent() * 100);
            },
        ];
    }

private static function initFormats(): array
    {
        return [
            'normal' => ' %current%/%max% [%bar%] %percent:3s%%',
            'normal_nomax' => ' %current% [%bar%]',

'verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%',
            'verbose_nomax' => ' %current% [%bar%] %elapsed:6s%',

'very_verbose' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s%',
            'very_verbose_nomax' => ' %current% [%bar%] %elapsed:6s%',

'debug' => ' %current%/%max% [%bar%] %percent:3s%% %elapsed:6s%/%estimated:-6s% %memory:6s%',
            'debug_nomax' => ' %current% [%bar%] %elapsed:6s% %memory:6s%',
        ];
    }

private function buildLine(): string
    {
        $regex = "{%([a-z\-_]+)(?:\:([^%]+))?%}i";
        $callback = function ($matches) {
            if ($formatter = $this::getPlaceholderFormatterDefinition($matches[1])) {
                $text = $formatter($this, $this->output);
            } elseif (isset($this->messages[$matches[1]])) {
                $text = $this->messages[$matches[1]];
            } else {
                return $matches[0];
            }

if (isset($matches[2])) {
                $text = sprintf('%'.$matches[2], $text);
            }

return $text;
        };
        $line = preg_replace_callback($regex, $callback, $this->format);

// gets string length for each sub line with multiline format
        $linesLength = array_map(function ($subLine) {
            return Helper::strlenWithoutDecoration($this->output->getFormatter(), rtrim($subLine, "\r"));
        }, explode("\n", $line));

$linesWidth = max($linesLength);

$terminalWidth = $this->terminal->getWidth();
        if ($linesWidth <= $terminalWidth) {
            return $line;
        }

$this->setBarWidth($this->barWidth - $linesWidth + $terminalWidth);

return preg_replace_callback($regex, $callback, $this->format);
    }
}

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