Merge pull request #86 from copperleaftech/use-platform-line-breaks

Add USE_PLATFORM_LINE_BREAKS option to YAMLGenerator.Feature

yaml/src/main/java/com/fasterxml/jackson/dataformat/yaml/YAMLGenerator.java

@@ -91,6 +91,14 @@ public enum Feature implements FormatFeature
          */
         LITERAL_BLOCK_STYLE(false),
 
+        /**
+         * Option passed to SnakeYAML that determines if the line breaks used for
+         * serialization should be same as what the default is for current platform.
+         * <p>
+         * Default value is `false` for backwards compatibility
+         */
+        USE_PLATFORM_LINE_BREAKS(false),
+
         /**
          * Feature enabling of which adds indentation for array entry generation
          * (default indentation being 2 spaces).
@@ -251,6 +259,9 @@ protected DumperOptions buildDumperOptions(int jsonFeatures, int yamlFeatures,
             opt.setIndicatorIndent(1);
             opt.setIndent(2);
         }
+        if (Feature.USE_PLATFORM_LINE_BREAKS.enabledIn(_formatFeatures)) {
+            opt.setLineBreak(DumperOptions.LineBreak.getPlatformLineBreak());
+        }
         return opt;
     }