/vendor/symfony/symfony/src/Symfony/Component/Console/Helper/ProgressBar.php
PHP | 559 lines | 320 code | 67 blank | 172 comment | 35 complexity | d85db95d2f65c90e5651dd86d0de33b2 MD5 | raw file
- <?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\Output\NullOutput;
- use Symfony\Component\Console\Output\OutputInterface;
- /**
- * The ProgressBar provides helpers to display progress output.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- * @author Chris Jones <leeked@gmail.com>
- */
- class ProgressBar
- {
- // options
- private $barWidth = 28;
- private $barChar = '=';
- private $emptyBarChar = '-';
- private $progressChar = '>';
- private $format = null;
- private $redrawFreq = 1;
- /**
- * @var OutputInterface
- */
- private $output;
- private $step;
- private $max;
- private $startTime;
- private $stepWidth;
- private $percent;
- private $lastMessagesLength;
- private $barCharOriginal;
- private $formatLineCount;
- private $messages;
- private static $formatters;
- private static $formats;
- /**
- * Constructor.
- *
- * @param OutputInterface $output An OutputInterface instance
- * @param int $max Maximum steps (0 if unknown)
- */
- public function __construct(OutputInterface $output, $max = 0)
- {
- // Disabling output when it does not support ANSI codes as it would result in a broken display anyway.
- $this->output = $output->isDecorated() ? $output : new NullOutput();
- $this->max = (int) $max;
- $this->stepWidth = $this->max > 0 ? Helper::strlen($this->max) : 4;
- if (!self::$formatters) {
- self::$formatters = self::initPlaceholderFormatters();
- }
- if (!self::$formats) {
- self::$formats = self::initFormats();
- }
- $this->setFormat($this->determineBestFormat());
- }
- /**
- * 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 $callable A PHP callable
- */
- public static function setPlaceholderFormatterDefinition($name, $callable)
- {
- if (!self::$formatters) {
- self::$formatters = self::initPlaceholderFormatters();
- }
- self::$formatters[$name] = $callable;
- }
- /**
- * Gets the placeholder formatter for a given name.
- *
- * @param string $name The placeholder name (including the delimiter char like %)
- *
- * @return callable|null A PHP callable
- */
- public static function getPlaceholderFormatterDefinition($name)
- {
- 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 $format A format string
- */
- public static function setFormatDefinition($name, $format)
- {
- if (!self::$formats) {
- self::$formats = self::initFormats();
- }
- self::$formats[$name] = $format;
- }
- /**
- * Gets the format for a given name.
- *
- * @param string $name The format name
- *
- * @return string|null A format string
- */
- public static function getFormatDefinition($name)
- {
- if (!self::$formats) {
- self::$formats = self::initFormats();
- }
- return isset(self::$formats[$name]) ? self::$formats[$name] : null;
- }
- public function setMessage($message, $name = 'message')
- {
- $this->messages[$name] = $message;
- }
- public function getMessage($name = 'message')
- {
- return $this->messages[$name];
- }
- /**
- * Gets the progress bar start time.
- *
- * @return int The progress bar start time
- */
- public function getStartTime()
- {
- return $this->startTime;
- }
- /**
- * Gets the progress bar maximal steps.
- *
- * @return int The progress bar max steps
- */
- public function getMaxSteps()
- {
- return $this->max;
- }
- /**
- * Gets the progress bar step.
- *
- * @return int The progress bar step
- */
- public function getStep()
- {
- return $this->step;
- }
- /**
- * Gets the progress bar step width.
- *
- * @return int The progress bar step width
- */
- public function getStepWidth()
- {
- return $this->stepWidth;
- }
- /**
- * Gets the current progress bar percent.
- *
- * @return int The current progress bar percent
- */
- public function getProgressPercent()
- {
- return $this->percent;
- }
- /**
- * Sets the progress bar width.
- *
- * @param int $size The progress bar size
- */
- public function setBarWidth($size)
- {
- $this->barWidth = (int) $size;
- }
- /**
- * Gets the progress bar width.
- *
- * @return int The progress bar size
- */
- public function getBarWidth()
- {
- return $this->barWidth;
- }
- /**
- * Sets the bar character.
- *
- * @param string $char A character
- */
- public function setBarCharacter($char)
- {
- $this->barChar = $char;
- }
- /**
- * Gets the bar character.
- *
- * @return string A character
- */
- public function getBarCharacter()
- {
- return $this->barChar;
- }
- /**
- * Sets the empty bar character.
- *
- * @param string $char A character
- */
- public function setEmptyBarCharacter($char)
- {
- $this->emptyBarChar = $char;
- }
- /**
- * Gets the empty bar character.
- *
- * @return string A character
- */
- public function getEmptyBarCharacter()
- {
- return $this->emptyBarChar;
- }
- /**
- * Sets the progress bar character.
- *
- * @param string $char A character
- */
- public function setProgressCharacter($char)
- {
- $this->progressChar = $char;
- }
- /**
- * Gets the progress bar character.
- *
- * @return string A character
- */
- public function getProgressCharacter()
- {
- return $this->progressChar;
- }
- /**
- * Sets the progress bar format.
- *
- * @param string $format The format
- */
- public function setFormat($format)
- {
- // try to use the _nomax variant if available
- if (!$this->max && isset(self::$formats[$format.'_nomax'])) {
- $this->format = self::$formats[$format.'_nomax'];
- } elseif (isset(self::$formats[$format])) {
- $this->format = self::$formats[$format];
- } else {
- $this->format = $format;
- }
- $this->formatLineCount = substr_count($this->format, "\n");
- }
- /**
- * Sets the redraw frequency.
- *
- * @param int $freq The frequency in steps
- */
- public function setRedrawFrequency($freq)
- {
- $this->redrawFreq = (int) $freq;
- }
- /**
- * Starts the progress output.
- */
- public function start()
- {
- $this->startTime = time();
- $this->step = 0;
- $this->percent = 0;
- $this->lastMessagesLength = 0;
- $this->barCharOriginal = '';
- if (!$this->max) {
- $this->barCharOriginal = $this->barChar;
- $this->barChar = $this->emptyBarChar;
- }
- $this->display();
- }
- /**
- * Advances the progress output X steps.
- *
- * @param int $step Number of steps to advance
- *
- * @throws \LogicException
- */
- public function advance($step = 1)
- {
- $this->setCurrent($this->step + $step);
- }
- /**
- * Sets the current progress.
- *
- * @param int $step The current progress
- *
- * @throws \LogicException
- */
- public function setCurrent($step)
- {
- if (null === $this->startTime) {
- throw new \LogicException('You must start the progress bar before calling setCurrent().');
- }
- $step = (int) $step;
- if ($step < $this->step) {
- throw new \LogicException('You can\'t regress the progress bar.');
- }
- if ($this->max > 0 && $step > $this->max) {
- throw new \LogicException('You can\'t advance the progress bar past the max value.');
- }
- $prevPeriod = intval($this->step / $this->redrawFreq);
- $currPeriod = intval($step / $this->redrawFreq);
- $this->step = $step;
- $this->percent = $this->max > 0 ? (float) $this->step / $this->max : 0;
- if ($prevPeriod !== $currPeriod || $this->max === $step) {
- $this->display();
- }
- }
- /**
- * Finishes the progress output.
- */
- public function finish()
- {
- if (null === $this->startTime) {
- throw new \LogicException('You must start the progress bar before calling finish().');
- }
- if (!$this->max) {
- $this->barChar = $this->barCharOriginal;
- $this->max = $this->step;
- $this->setCurrent($this->max);
- $this->max = 0;
- $this->barChar = $this->emptyBarChar;
- } else {
- $this->setCurrent($this->max);
- }
- $this->startTime = null;
- }
- /**
- * Outputs the current progress string.
- *
- * @throws \LogicException
- */
- public function display()
- {
- if (null === $this->startTime) {
- throw new \LogicException('You must start the progress bar before calling display().');
- }
- // these 3 variables can be removed in favor of using $this in the closure when support for PHP 5.3 will be dropped.
- $self = $this;
- $output = $this->output;
- $messages = $this->messages;
- $this->overwrite(preg_replace_callback("{%([a-z\-_]+)(?:\:([^%]+))?%}i", function ($matches) use ($self, $output, $messages) {
- if ($formatter = $self::getPlaceholderFormatterDefinition($matches[1])) {
- $text = call_user_func($formatter, $self, $output);
- } elseif (isset($messages[$matches[1]])) {
- $text = $messages[$matches[1]];
- } else {
- return $matches[0];
- }
- if (isset($matches[2])) {
- $text = sprintf('%'.$matches[2], $text);
- }
- return $text;
- }, $this->format));
- }
- /**
- * 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()
- {
- $this->overwrite(str_repeat("\n", $this->formatLineCount));
- }
- /**
- * Overwrites a previous message to the output.
- *
- * @param string $message The message
- */
- private function overwrite($message)
- {
- $lines = explode("\n", $message);
- // append whitespace to match the line's length
- if (null !== $this->lastMessagesLength) {
- foreach ($lines as $i => $line) {
- if ($this->lastMessagesLength > Helper::strlenWithoutDecoration($this->output->getFormatter(), $line)) {
- $lines[$i] = str_pad($line, $this->lastMessagesLength, "\x20", STR_PAD_RIGHT);
- }
- }
- }
- // move back to the beginning of the progress bar before redrawing it
- $this->output->write("\x0D");
- if ($this->formatLineCount) {
- $this->output->write(sprintf("\033[%dA", $this->formatLineCount));
- }
- $this->output->write(implode("\n", $lines));
- $this->lastMessagesLength = 0;
- foreach ($lines as $line) {
- $len = Helper::strlenWithoutDecoration($this->output->getFormatter(), $line);
- if ($len > $this->lastMessagesLength) {
- $this->lastMessagesLength = $len;
- }
- }
- }
- private function determineBestFormat()
- {
- switch ($this->output->getVerbosity()) {
- // OutputInterface::VERBOSITY_QUIET: display is disabled anyway
- case OutputInterface::VERBOSITY_VERBOSE:
- return $this->max > 0 ? 'verbose' : 'verbose_nomax';
- case OutputInterface::VERBOSITY_VERY_VERBOSE:
- return $this->max > 0 ? 'very_verbose' : 'very_verbose_nomax';
- case OutputInterface::VERBOSITY_DEBUG:
- return $this->max > 0 ? 'debug' : 'debug_nomax';
- default:
- return $this->max > 0 ? 'normal' : 'normal_nomax';
- }
- }
- private static function initPlaceholderFormatters()
- {
- return array(
- 'bar' => function (ProgressBar $bar, OutputInterface $output) {
- $completeBars = floor($bar->getMaxSteps() > 0 ? $bar->getProgressPercent() * $bar->getBarWidth() : $bar->getStep() % $bar->getBarWidth());
- $display = str_repeat($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 (ProgressBar $bar) {
- return Helper::formatTime(time() - $bar->getStartTime());
- },
- 'remaining' => function (ProgressBar $bar) {
- if (!$bar->getMaxSteps()) {
- throw new \LogicException('Unable to display the remaining time if the maximum number of steps is not set.');
- }
- if (!$bar->getStep()) {
- $remaining = 0;
- } else {
- $remaining = round((time() - $bar->getStartTime()) / $bar->getStep() * ($bar->getMaxSteps() - $bar->getStep()));
- }
- return Helper::formatTime($remaining);
- },
- 'estimated' => function (ProgressBar $bar) {
- if (!$bar->getMaxSteps()) {
- throw new \LogicException('Unable to display the estimated time if the maximum number of steps is not set.');
- }
- if (!$bar->getStep()) {
- $estimated = 0;
- } else {
- $estimated = round((time() - $bar->getStartTime()) / $bar->getStep() * $bar->getMaxSteps());
- }
- return Helper::formatTime($estimated);
- },
- 'memory' => function (ProgressBar $bar) {
- return Helper::formatMemory(memory_get_usage(true));
- },
- 'current' => function (ProgressBar $bar) {
- return str_pad($bar->getStep(), $bar->getStepWidth(), ' ', STR_PAD_LEFT);
- },
- 'max' => function (ProgressBar $bar) {
- return $bar->getMaxSteps();
- },
- 'percent' => function (ProgressBar $bar) {
- return floor($bar->getProgressPercent() * 100);
- },
- );
- }
- private static function initFormats()
- {
- return array(
- '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%',
- );
- }
- }