TemplateBundle/Command/RenderTemplateCommand.php

<?php

namespace TemplateBundle\Command;

use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Input\InputOption;
use TemplateBundle\Services\TemplateService;

class RenderTemplateCommand extends ContainerAwareCommand
{

    protected function configure()
    {
        $this
            ->setName('template:render')
            ->setDescription('Render template content')
            ->setHelp('This command allows you to render the content of a template')
            ->addOption('name', null, InputOption::VALUE_REQUIRED, 'Template name')
            ->addOption('filename', null, InputOption::VALUE_OPTIONAL, 'Template output file')
            ->addOption(
                'parameter',
                null, 
                InputOption::VALUE_OPTIONAL | InputOption::VALUE_IS_ARRAY, 
                'Array with template parameters. e.g., --parameter=key1:value1 --parameter=key2:value2'
            )
            ->addOption(
                'dump',
                'd', 
                InputOption::VALUE_NONE, 
                'Dump template content'
            )    
        ;
    }

    /**
     * @param InputInterface $input
     * @param OutputInterface $output
     */
    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $name = $input->getOption('name');
        if (is_null($name)) {
            $output->writeln('<error>Name option is required</error>');

            return;
        }

        $parameters = $this->getParameters($input, $output);

        try {
            /* @var $templateService TemplateService */
            $templateService = $this->getContainer()->get('template.template_service');
            $filename = $templateService->renderTemplate($name, $parameters, $input->getOption('filename'));
            if (!is_null($filename)) {
                $output->writeln("Template successfully generated! File: <info>{$filename}</info>");
                
                if ($input->getOption('dump')) {
                    $output->writeln(file_get_contents($filename));
                }
                
            } else {
                $output->writeln('<error>Template not found</error>');
            }
        } catch (\Exception $ex) {
            $output->writeln(sprintf('<error>%s</error>', $ex->getMessage()));
        }
    }
    
    /**
     * @param InputInterface $input
     * @param OutputInterface $output
     * 
     * @return array
     */
    public function getParameters(InputInterface $input, OutputInterface $output)
    {
        $parameters = array();
        $inputParameters = $input->getOption('parameter');
        if (empty($inputParameters)) {
            $output->writeln('Enter the template parameters:');
            $output->writeln('Enter the name and value of parameter. e.g., <info>\'name1:value1\'</info>. Press Enter to finish');
            while ($param = fgets(STDIN)) {
                if ($param === PHP_EOL) {
                    break;
                }
                $inputParameters[] = $param;
                $output->writeln('Enter the name and value of parameter. e.g., <info>\'name1:value1\'</info>. Press Enter to finish');
            }
        }
        foreach ($inputParameters as $param) {
            $pieces = explode(':', $param);
            if (isset($pieces[0]) && isset($pieces[1])) {
                $parameters[trim($pieces[0])] = trim($pieces[1]);
            }
        }
        
        return $parameters;
    }

}