Add --format option to `composer fund` command (#9678)

* Add --format option to `composer fund` command

Co-authored-by: Jochen Roth <jochen.roth@b13.com>

src/Composer/Command/FundCommand.php

@@ -12,12 +12,14 @@
 
 namespace Composer\Command;
 
-use Composer\Package\CompletePackageInterface;
+use Composer\Json\JsonFile;
 use Composer\Package\AliasPackage;
 use Composer\Package\BasePackage;
-use Composer\Semver\Constraint\MatchAllConstraint;
+use Composer\Package\CompletePackageInterface;
 use Composer\Repository\CompositeRepository;
+use Composer\Semver\Constraint\MatchAllConstraint;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 
 /**
@@ -30,6 +32,9 @@ class FundCommand extends BaseCommand
     {
         $this->setName('fund')
             ->setDescription('Discover how to help fund the maintenance of your dependencies.')
+            ->setDefinition(array(
+                new InputOption('format', 'f', InputOption::VALUE_REQUIRED, 'Format of the output: text or json', 'text')
+            ))
         ;
     }
 
@@ -81,7 +86,14 @@ class FundCommand extends BaseCommand
 
         $io = $this->getIO();
 
-        if ($fundings) {
+        $format = $input->getOption('format');
+        if (!in_array($format, array('text', 'json'))) {
+            $io->writeError(sprintf('Unsupported format "%s". See help for supported formats.', $format));
+
+            return 1;
+        }
+
+        if ($fundings && $format === 'text') {
             $prev = null;
 
             $io->write('The following packages were found in your dependencies which publish funding information:');
@@ -104,6 +116,8 @@ class FundCommand extends BaseCommand
             $io->write("");
             $io->write("Please consider following these links and sponsoring the work of package authors!");
             $io->write("Thank you!");
+        } elseif ($format === 'json') {
+            $io->write(JsonFile::encode($fundings));
         } else {
             $io->write("No funding links were found in your package dependencies. This doesn't mean they don't need your support!");
         }