Add json and csv formats to upgrade output

features/theme.feature

@@ -249,3 +249,57 @@ Feature: Manage WordPress themes
       | name          | status   |
       | biker         | active   |
       | jolene        | parent   |
+
+  Scenario: When updating a theme --format should be the same when using --dry-run
+    Given a WP install
+
+    When I run `wp theme install --force twentytwelve --version=1.0`
+    Then STDOUT should not be empty
+
+    When I run `wp theme list --name=twentytwelve --field=update_version`
+    And save STDOUT as {UPDATE_VERSION}
+
+    When I run `wp theme update twentytwelve --format=summary --dry-run`
+    Then STDOUT should contain:
+      """
+      Available theme updates:
+      Twenty Twelve update from version 1.0 to version {UPDATE_VERSION}
+      """
+
+    When I run `wp theme update twentytwelve --format=json --dry-run`
+    Then STDOUT should be JSON containing:
+      """
+      [{"name":"twentytwelve","status":"inactive","version":"1.0","update_version":"{UPDATE_VERSION}"}]
+      """
+
+    When I run `wp theme update twentytwelve --format=csv --dry-run`
+    Then STDOUT should contain:
+      """
+      name,status,version,update_version
+      twentytwelve,inactive,1.0,{UPDATE_VERSION}
+      """
+
+  Scenario: Check json and csv formats when updating a theme
+    Given a WP install
+
+    When I run `wp theme install --force twentytwelve --version=1.0`
+    Then STDOUT should not be empty
+
+    When I run `wp theme list --name=twentytwelve --field=update_version`
+    And save STDOUT as {UPDATE_VERSION}
+
+    When I run `wp theme update twentytwelve --format=json`
+    Then STDOUT should contain:
+      """
+      [{"name":"twentytwelve","old_version":"1.0","new_version":"{UPDATE_VERSION}","status":"Updated"}]
+      """
+
+    When I run `wp theme install --force twentytwelve --version=1.0`
+    Then STDOUT should not be empty
+
+    When I run `wp theme update twentytwelve --format=csv`
+    Then STDOUT should contain:
+      """
+      name,old_version,new_version,status
+      twentytwelve,1.0,{UPDATE_VERSION},Updated
+      """

php/WP_CLI/CommandWithUpgrade.php

@@ -212,6 +212,11 @@ protected function get_upgrader( $assoc_args ) {
 	protected function update_many( $args, $assoc_args ) {
 		call_user_func( $this->upgrade_refresh );
 
+		if ( ! empty( $assoc_args['format'] ) && in_array( $assoc_args['format'], array( 'json', 'csv' ) ) ) {
+			$logger = new \WP_CLI\Loggers\Quiet;
+			\WP_CLI::set_logger( $logger );
+		}
+
 		if ( ! \WP_CLI\Utils\get_flag_value( $assoc_args, 'all' ) && empty( $args ) ) {
 			\WP_CLI::error( "Please specify one or more {$this->item_type}s, or use --all." );
 		}
@@ -232,10 +237,17 @@ protected function update_many( $args, $assoc_args ) {
 				return;
 			}
 
-			\WP_CLI::line( "Available {$this->item_type} updates:" );
-
-			\WP_CLI\Utils\format_items( 'table', $items_to_update,
-				array( 'name', 'status', 'version', 'update_version' ) );
+			if ( ! empty( $assoc_args['format'] ) && in_array( $assoc_args['format'], array( 'json', 'csv' ) ) ) {
+				\WP_CLI\Utils\format_items( $assoc_args['format'], $items_to_update, array( 'name', 'status', 'version', 'update_version' ) );
+			} else if ( ! empty( $assoc_args['format'] ) && 'summary' === $assoc_args['format'] ) {
+				\WP_CLI::line( "Available {$this->item_type} updates:" );
+				foreach( $items_to_update as $item_to_update => $info ) {
+					\WP_CLI::log( "{$info['title']} update from version {$info['version']} to version {$info['update_version']}" );
+				}
+			} else {
+				\WP_CLI::line( "Available {$this->item_type} updates:" );
+				\WP_CLI\Utils\format_items( 'table', $items_to_update, array( 'name', 'status', 'version', 'update_version' ) );
+			}
 
 			return;
 		}
@@ -282,7 +294,13 @@ protected function update_many( $args, $assoc_args ) {
 						'status' => $result[ $info['update_id'] ] !== null ? 'Updated' : 'Error',
 					);
 				}
-				\WP_CLI\Utils\format_items( 'table', $status, array( 'name', 'old_version', 'new_version', 'status' ) );
+
+				$format = 'table';
+				if ( ! empty( $assoc_args['format'] ) && in_array( $assoc_args['format'], array( 'json', 'csv' ) ) ) {
+					$format = $assoc_args['format'];
+				}
+
+				\WP_CLI\Utils\format_items( $format, $status, array( 'name', 'old_version', 'new_version', 'status' ) );
 			}
 		}
 	}

php/WP_CLI/UpgraderSkin.php

@@ -41,7 +41,7 @@ function feedback( $string ) {
 
 		$string = str_replace( '…', '...', strip_tags( $string ) );
 
-		\WP_CLI::line( $string );
+		\WP_CLI::log( $string );
 	}
 }