update importation command: add option --file

README.md

@@ -76,7 +76,7 @@ In case of you want to delete the mailing:
 $ php bin/console mailing:delete xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
 ```
 
-Finally, create a script run in a cron: 
+Finally, create a script run in a cron:
 
 ```
 #!/bin/sh
@@ -84,12 +84,19 @@ Finally, create a script run in a cron:
 cd "/path/to/app"
 
 find /var/lib/mailrss -name "foobar-*" | while read MAIL_FILE; do
-	cat "MAIL_FILE" | php bin/console mail:import xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
+	MAILING_ID="xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
 
-	rm "MAIL_FILE"
+	php bin/console mail:import "$MAILING_ID" -f "$MAIL_FILE" && rm "$MAIL_FILE"
 done
 ```
 
+You also can import a mail using stdin:
+
+```
+$ php bin/console mail:import "$MAILING_ID" < "$MAIL_FILE"
+$ command | php bin/console mail:import "$MAILING_ID"
+```
+
 If you wan create another feed then:
 
 * Create an aliase

src/Command/MailImportCommand.php

@@ -39,6 +39,7 @@ class MailImportCommand extends Command
     {
         $this
             ->setDescription('Import a mail into a mailing')
+            ->addOption('file', 'f', InputOption::VALUE_REQUIRED, 'File')
             ->addArgument('mailing_id', InputArgument::OPTIONAL, 'ID of the mailing')
         ;
     }
@@ -47,6 +48,7 @@ class MailImportCommand extends Command
     {
         $io = new SymfonyStyle($input, $output);
         $mailingId = $input->getArgument('mailing_id');
+        $file = $input->getOption('file');
 
         $mailing = $this->mailingRepo->find(['id' => $mailingId]);
 
@@ -56,16 +58,32 @@ class MailImportCommand extends Command
             return Command::FAILURE;
         }
 
-        $stdIn = file_get_contents('php://stdin');
+        if (empty($file)) {
+            $file = 'php://stdin';
 
-        if (empty($stdIn)) {
-            $io->error('Standard input is empty');
+            $content = trim(file_get_contents($file));
+
+            if (empty($content)) {
+                $io->error('Standard input is empty');
+
+                return Command::FAILURE;
+            }
+        } elseif (file_exists($file) && is_readable($file) && is_file($file)) {
+            $content = trim(file_get_contents($file));
+
+            if (empty($content)) {
+                $io->error('File is empty');
+
+                return Command::FAILURE;
+            }
+        } else {
+            $io->error('No such file or is not readable');
 
             return Command::FAILURE;
         }
 
         $parser = new Parser();
-        $parser->setText($stdIn);
+        $parser->setText($content);
 
         $subject = $parser->getHeader('subject');
         $date = $parser->getHeader('date');