Show detailed changes in verbose mode, refs #842

src/Composer/Command/StatusCommand.php

@@ -29,8 +29,11 @@ class StatusCommand extends Command
         $this
             ->setName('status')
             ->setDescription('Show a list of locally modified packages')
+            ->setDefinition(array(
+                new InputOption('verbose', 'v', InputOption::VALUE_NONE, 'Show modified files for each directory that contains changes.'),
+            ))
             ->setHelp(<<<EOT
-The status command displays a list of packages that have
+The status command displays a list of dependencies that have
 been modified locally.
 
 EOT
@@ -56,8 +59,8 @@ EOT
             if ($downloader instanceof VcsDownloader) {
                 $targetDir = $im->getInstallPath($package);
 
-                if ($downloader->hasLocalChanges($targetDir)) {
+                if ($changes = $downloader->getLocalChanges($targetDir)) {
-                    $errors[] = $targetDir;
+                    $errors[$targetDir] = $changes;
                 }
             }
         }
@@ -66,11 +69,23 @@ EOT
         if (!$errors) {
             $output->writeln('<info>No local changes</info>');
         } else {
-            $output->writeln('<error>You have changes in the following packages:</error>');
+            $output->writeln('<error>You have changes in the following dependencies:</error>');
         }
 
-        foreach ($errors as $error) {
+        foreach ($errors as $path => $changes) {
-            $output->writeln($error);
+            if ($input->getOption('verbose')) {
+                $indentedChanges = implode("\n", array_map(function ($line) {
+                    return '    ' . $line;
+                }, explode("\n", $changes)));
+                $output->writeln('<info>'.$path.'</info>:');
+                $output->writeln($indentedChanges);
+            } else {
+                $output->writeln($path);
+            }
+        }
+
+        if ($errors && !$input->getOption('verbose')) {
+            $output->writeln('Use --verbose (-v) to see modified files');
         }
 
         return $errors ? 1 : 0;

src/Composer/Downloader/GitDownloader.php

@@ -66,14 +66,14 @@ class GitDownloader extends VcsDownloader
     /**
      * {@inheritDoc}
      */
-    public function hasLocalChanges($path)
+    public function getLocalChanges($path)
     {
         $command = sprintf('cd %s && git status --porcelain --untracked-files=no', escapeshellarg($path));
         if (0 !== $this->process->execute($command, $output)) {
             throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
         }
 
-        return (bool) trim($output);
+        return trim($output) ?: null;
     }
 
     protected function updateToCommit($path, $reference, $branch, $date)

src/Composer/Downloader/HgDownloader.php

@@ -52,10 +52,10 @@ class HgDownloader extends VcsDownloader
     /**
      * {@inheritDoc}
      */
-    public function hasLocalChanges($path)
+    public function getLocalChanges($path)
     {
         $this->process->execute(sprintf('cd %s && hg st', escapeshellarg($path)), $output);
 
-        return (bool) trim($output);
+        return trim($output) ?: null;
     }
 }

src/Composer/Downloader/SvnDownloader.php

@@ -48,11 +48,11 @@ class SvnDownloader extends VcsDownloader
     /**
      * {@inheritDoc}
      */
-    public function hasLocalChanges($path)
+    public function getLocalChanges($path)
     {
         $this->process->execute('svn status --ignore-externals', $output, $path);
 
-        return preg_match('{^ *[^X ] +}m', $output);
+        return preg_match('{^ *[^X ] +}m', $output) ? $output : null;
     }
 
     /**

src/Composer/Downloader/VcsDownloader.php

@@ -90,7 +90,7 @@ abstract class VcsDownloader implements DownloaderInterface
      */
     protected function enforceCleanDirectory($path)
     {
-        if ($this->hasLocalChanges($path)) {
+        if (null !== $this->getLocalChanges($path)) {
             throw new \RuntimeException('Source directory ' . $path . ' has uncommitted changes.');
         }
     }
@@ -116,7 +116,7 @@ abstract class VcsDownloader implements DownloaderInterface
      * Checks for changes to the local copy
      *
      * @param  string      $path package directory
-     * @return boolean       whether package has local changes
+     * @return string|null       changes or null
      */
-    abstract public function hasLocalChanges($path);
+    abstract public function getLocalChanges($path);
 }