Escape eol's for JSON output

2 files changed, 22 insertions, 1 deletions

diff --git a/javaparser-core/src/main/java/com/github/javaparser/printer/JsonPrinter.java b/javaparser-core/src/main/java/com/github/javaparser/printer/JsonPrinter.java
index 7357a3538..237051265 100644
--- a/javaparser-core/src/main/java/com/github/javaparser/printer/JsonPrinter.java
+++ b/javaparser-core/src/main/java/com/github/javaparser/printer/JsonPrinter.java
@@ -69,6 +69,6 @@ public class JsonPrinter {
     }
 
     private static String q(String value) {
-        return "\"" + value.replace("\"", "\\\"") + "\"";
+        return "\"" + value.replace("\"", "\\\"").replace("\n", "\\n").replace("\r", "\\r") + "\"";
     }
 }
diff --git a/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java b/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
index fac1ee359..7e26254a4 100644
--- a/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
+++ b/javaparser-testing/src/test/java/com/github/javaparser/printer/JsonPrinterTest.java
@@ -9,6 +9,12 @@ import static com.github.javaparser.JavaParser.*;
 import static com.github.javaparser.utils.Utils.EOL;
 import static org.junit.Assert.*;
 
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.io.Writer;
+import java.io.BufferedWriter;
+
 public class JsonPrinterTest {
     @Test
     public void testWithType() {
@@ -51,4 +57,19 @@ public class JsonPrinterTest {
         JsonPrinter printer = new JsonPrinter(true);
         printer.output(unit);
     }
+
+    @Test
+    public void issue1421() {
+        // Handle multi-line strings in JSON output
+        String code = "/* \n" +
+                "* Some comment\n" +
+                "*/\n" +
+                "public class Test {}";
+        CompilationUnit unit = parse(code);
+        JsonPrinter printer = new JsonPrinter(true);
+
+        String output = printer.output(unit);
+
+        assertEquals("{\"type\":\"CompilationUnit\",\"types\":[{\"type\":\"ClassOrInterfaceDeclaration\",\"isInterface\":\"false\",\"name\":{\"type\":\"SimpleName\",\"identifier\":\"Test\"},\"comment\":{\"type\":\"BlockComment\",\"content\":\" \\n* Some comment\\n\"}}]}", output);
+    }
 }
\ No newline at end of file