add literal scalar and folded scalar (#152)

src/com/esotericsoftware/yamlbeans/YamlConfig.java

@@ -322,7 +322,7 @@ public static enum WriteClassName {
 	}
 
 	public static enum Quote {
-		NONE('\0'), SINGLE('\''), DOUBLE('"');
+		NONE('\0'), SINGLE('\''), DOUBLE('"'), LITERAL('|'), FOLDED('>');
 
 		char c;
 

src/com/esotericsoftware/yamlbeans/YamlWriter.java

@@ -244,7 +244,7 @@ private void writeValue (Object object, Class fieldClass, Class elementType, Cla
 
 		if (fieldClass.isArray()) {
 			elementType = fieldClass.getComponentType();
-			emitter.emit(new SequenceStartEvent(anchor, null, true, false));
+			emitter.emit(new SequenceStartEvent(anchor, null, true, config.writeConfig.isFlowStyle()));
 			for (int i = 0, n = Array.getLength(object); i < n; i++)
 				writeValue(Array.get(object, i), elementType, null, null);
 			emitter.emit(Event.SEQUENCE_END);
@@ -267,7 +267,7 @@ private void writeValue (Object object, Class fieldClass, Class elementType, Cla
 		}
 
 		Set<Property> properties = Beans.getProperties(valueClass, config.beanProperties, config.privateFields, config);
-		emitter.emit(new MappingStartEvent(anchor, tag, !showTag, false));
+		emitter.emit(new MappingStartEvent(anchor, tag, !showTag, config.writeConfig.isFlowStyle()));
 		for (Property property : properties) {
 			try {
 				Object propertyValue = property.get(object);

src/com/esotericsoftware/yamlbeans/emitter/Emitter.java

@@ -525,14 +525,20 @@ private char chooseScalarStyle () {
 		ScalarEvent ev = (ScalarEvent)event;
 		if (analysis == null) analysis = ScalarAnalysis.analyze(ev.value, config.escapeUnicode);
 		if (ev.style == '"' || config.canonical) return '"';
-		if (ev.style == 0 && !(simpleKeyContext && (analysis.empty || analysis.multiline))
-			&& ((flowLevel != 0 && analysis.allowFlowPlain) || (flowLevel == 0 && analysis.allowBlockPlain))) return 0;
-		if (ev.style == 0 && ev.implicit[0] && !(simpleKeyContext && (analysis.empty || analysis.multiline))
-			&& ((flowLevel != 0 && analysis.allowFlowPlain) || (flowLevel == 0 && analysis.allowBlockPlain))) return 0;
-		if ((ev.style == '|' || ev.style == '>') && flowLevel == 0 && analysis.allowBlock) return '\'';
-		if ((ev.style == 0 || ev.style == '\'') && analysis.allowSingleQuoted && !(simpleKeyContext && analysis.multiline))
+		if ((ev.style == 0 || ev.style == '|' || ev.style == '>')
+				&& !(simpleKeyContext && (analysis.empty || analysis.multiline))
+				&& ((flowLevel != 0 && analysis.allowFlowPlain) || (flowLevel == 0 && analysis.allowBlockPlain))) {
+			return 0;
+		}
+		if ((ev.style == 0 || ev.style == '\'') && analysis.allowSingleQuoted
+				&& !(simpleKeyContext && analysis.multiline)) {
 			return '\'';
-		if (ev.style == 0 && analysis.multiline && flowLevel == 0 && analysis.allowBlock) return '|';
+		}
+		if ((ev.style == 0 || ev.style == '|' || ev.style == '>') && analysis.multiline && flowLevel == 0
+				&& analysis.allowBlock) {
+			return ev.style == 0 ? '|' : ev.style;
+		}
+
 		return '"';
 	}
 

test/com/esotericsoftware/yamlbeans/YamlConfigTest.java

@@ -496,6 +496,24 @@ public void testSetQuoteChar() throws YamlException {
 		yamlWriter.close();
 		assertEquals("\"name\": \"xxx\"" + LINE_SEPARATOR + "\"age\": \"18\"" + LINE_SEPARATOR,
 				stringWriter.toString());
+
+		stringWriter = new StringWriter();
+		yamlConfig.writeConfig.setQuoteChar(Quote.LITERAL);
+		yamlWriter = new YamlWriter(stringWriter, yamlConfig);
+		yamlWriter.write("test\ntest");
+		yamlWriter.close();
+		System.out.println(stringWriter.toString());
+		assertEquals("|-" + LINE_SEPARATOR + "   test" + LINE_SEPARATOR + "   test" + LINE_SEPARATOR,
+				stringWriter.toString());
+
+		stringWriter = new StringWriter();
+		yamlConfig.writeConfig.setQuoteChar(Quote.FOLDED);
+		yamlWriter = new YamlWriter(stringWriter, yamlConfig);
+		yamlWriter.write("test\ntest");
+		yamlWriter.close();
+		System.out.println(stringWriter.toString());
+		assertEquals(">-" + LINE_SEPARATOR + "   test" + LINE_SEPARATOR + LINE_SEPARATOR + "   test" + LINE_SEPARATOR,
+				stringWriter.toString());
 	}
 
 	@Test