Support fs:template with data uris

bin/droid-fs

@@ -26,4 +26,5 @@ $application->add(new Droid\Plugin\Fs\Command\FsCopyCommand());
 $application->add(new Droid\Plugin\Fs\Command\FsMkdirCommand());
 $application->add(new Droid\Plugin\Fs\Command\FsMountCommand());
 $application->add(new Droid\Plugin\Fs\Command\FsRenameCommand());
+$application->add(new Droid\Plugin\Fs\Command\FsTemplateCommand());
 $application->run();

composer.json

@@ -14,7 +14,8 @@
     "require": {
         "php": ">=5.3.0",
         "symfony/console": "~2.7",
-        "symfony/process": "~2.7"
+        "symfony/process": "~2.7",
+        "zordius/lightncandy": "~0.93"
     },
     "require-dev": {
         "linkorb/autotune": "~1.0"

src/Command/FsTemplateCommand.php

@@ -0,0 +1,86 @@
+<?php
+
+namespace Droid\Plugin\Fs\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Output\OutputInterface;
+use Droid\Plugin\Fs\Utils;
+use RuntimeException;
+use LightnCandy\LightnCandy;
+
+class FsTemplateCommand extends Command
+{
+    public function configure()
+    {
+        $this->setName('fs:template')
+            ->setDescription('Generates a file from a template')
+            ->addArgument(
+                'src',
+                InputArgument::REQUIRED,
+                'Source filename to update'
+            )
+            ->addArgument(
+                'dest',
+                InputArgument::REQUIRED,
+                'Destination filename'
+            )
+            ->addOption(
+                'json',
+                'j',
+                InputOption::VALUE_REQUIRED,
+                'JSON filename to get data for in the template'
+            )
+            ->addOption(
+                'mode',
+                'm',
+                InputOption::VALUE_REQUIRED,
+                'Permission filemode'
+            )
+            ->addOption(
+                'force',
+                'f',
+                InputOption::VALUE_NONE,
+                'Force'
+            )
+        ;
+    }
+
+    public function execute(InputInterface $input, OutputInterface $output)
+    {
+        $src = $input->getArgument('src');
+        $content = Utils::getContents($src);
+
+        $dest = $input->getArgument('dest');
+        $dest = Utils::normalizePath($dest);
+
+        $mode = $input->getOption('mode');
+        if (!$mode) {
+            $mode = 0644;
+        } else {
+            $mode = octdec($mode);
+        }
+
+
+        $output->writeLn("Creating file $dest. Mode: " . decoct($mode));
+
+        $php = LightnCandy::compile($content);
+        $render = LightnCandy::prepare($php);
+
+        $data = [];
+        $jsonFilename = $input->getOption('json');
+        if ($jsonFilename) {
+            $json = Utils::getContents($jsonFilename);
+            $data = json_decode($json, true);
+            if (!$data) {
+                throw new RuntimeException("Can't parse data as JSON");
+            }
+        }
+
+        $content = $render($data);
+
+        file_put_contents($dest, $content);
+    }
+}

src/DroidPlugin.php

@@ -18,7 +18,7 @@ public function getCommands()
         $commands[] = new \Droid\Plugin\Fs\Command\FsMkdirCommand();
         $commands[] = new \Droid\Plugin\Fs\Command\FsMountCommand();
         $commands[] = new \Droid\Plugin\Fs\Command\FsRenameCommand();
-        //$commands[] = new \Droid\Plugin\Fs\Command\FsTemplateCommand();
+        $commands[] = new \Droid\Plugin\Fs\Command\FsTemplateCommand();
         return $commands;
     }
 }

src/Utils.php

@@ -2,6 +2,8 @@
 
 namespace Droid\Plugin\Fs;
 
+use RuntimeException;
+
 class Utils
 {
     public static function normalizePath($path)
@@ -19,4 +21,19 @@ public static function normalizePath($path)
         }
         return $path;
     }
+
+    public static function getContents($filename)
+    {
+        if (substr($filename, 0, 5) == 'data:') {
+            // parse as data-uri
+            $content = file_get_contents($filename);
+        } else {
+            $filename = Utils::normalizePath($filename);
+            if (!file_exists($filename)) {
+                throw new RuntimeException("File not found: " . $filename);
+            }
+            $content = file_get_contents($filename);
+        }
+        return $content;
+    }
 }