First commit

vendor/symfony/console/Helper/ProcessHelper.php

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+<?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\ConsoleOutputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Process\Exception\ProcessFailedException;
+use Symfony\Component\Process\Process;
+
+/**
+ * The ProcessHelper class provides helpers to run external processes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ProcessHelper extends Helper
+{
+    /**
+     * Runs an external process.
+     *
+     * @param OutputInterface      $output    An OutputInterface instance
+     * @param string|array|Process $cmd       An instance of Process or an array of arguments to escape and run or a command to run
+     * @param string|null          $error     An error message that must be displayed if something went wrong
+     * @param callable|null        $callback  A PHP callback to run whenever there is some
+     *                                        output available on STDOUT or STDERR
+     * @param int                  $verbosity The threshold for verbosity
+     *
+     * @return Process The process that ran
+     */
+    public function run(OutputInterface $output, $cmd, $error = null, callable $callback = null, $verbosity = OutputInterface::VERBOSITY_VERY_VERBOSE)
+    {
+        if ($output instanceof ConsoleOutputInterface) {
+            $output = $output->getErrorOutput();
+        }
+
+        $formatter = $this->getHelperSet()->get('debug_formatter');
+
+        if ($cmd instanceof Process) {
+            $process = $cmd;
+        } else {
+            $process = new Process($cmd);
+        }
+
+        if ($verbosity <= $output->getVerbosity()) {
+            $output->write($formatter->start(spl_object_hash($process), $this->escapeString($process->getCommandLine())));
+        }
+
+        if ($output->isDebug()) {
+            $callback = $this->wrapCallback($output, $process, $callback);
+        }
+
+        $process->run($callback);
+
+        if ($verbosity <= $output->getVerbosity()) {
+            $message = $process->isSuccessful() ? 'Command ran successfully' : sprintf('%s Command did not run successfully', $process->getExitCode());
+            $output->write($formatter->stop(spl_object_hash($process), $message, $process->isSuccessful()));
+        }
+
+        if (!$process->isSuccessful() && null !== $error) {
+            $output->writeln(sprintf('<error>%s</error>', $this->escapeString($error)));
+        }
+
+        return $process;
+    }
+
+    /**
+     * Runs the process.
+     *
+     * This is identical to run() except that an exception is thrown if the process
+     * exits with a non-zero exit code.
+     *
+     * @param OutputInterface $output   An OutputInterface instance
+     * @param string|Process  $cmd      An instance of Process or a command to run
+     * @param string|null     $error    An error message that must be displayed if something went wrong
+     * @param callable|null   $callback A PHP callback to run whenever there is some
+     *                                  output available on STDOUT or STDERR
+     *
+     * @return Process The process that ran
+     *
+     * @throws ProcessFailedException
+     *
+     * @see run()
+     */
+    public function mustRun(OutputInterface $output, $cmd, $error = null, callable $callback = null)
+    {
+        $process = $this->run($output, $cmd, $error, $callback);
+
+        if (!$process->isSuccessful()) {
+            throw new ProcessFailedException($process);
+        }
+
+        return $process;
+    }
+
+    /**
+     * Wraps a Process callback to add debugging output.
+     *
+     * @param OutputInterface $output   An OutputInterface interface
+     * @param Process         $process  The Process
+     * @param callable|null   $callback A PHP callable
+     *
+     * @return callable
+     */
+    public function wrapCallback(OutputInterface $output, Process $process, callable $callback = null)
+    {
+        if ($output instanceof ConsoleOutputInterface) {
+            $output = $output->getErrorOutput();
+        }
+
+        $formatter = $this->getHelperSet()->get('debug_formatter');
+
+        return function ($type, $buffer) use ($output, $process, $callback, $formatter) {
+            $output->write($formatter->progress(spl_object_hash($process), $this->escapeString($buffer), Process::ERR === $type));
+
+            if (null !== $callback) {
+                call_user_func($callback, $type, $buffer);
+            }
+        };
+    }
+
+    private function escapeString($str)
+    {
+        return str_replace('<', '\\<', $str);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getName()
+    {
+        return 'process';
+    }
+}