Add release notes, minor changes to #180

Author: cowtowncoder

release-notes/CREDITS-2.x

@@ -98,3 +98,7 @@ Tyler Carpenter-Rivers (tyler2cr@github)
 #7: Add `CsvParser.Feature.EMPTY_STRING_AS_NULL` to allow coercing empty Strings
   into `null` values
  (2.11.0)
+
+* Reported, constributed fix for #180: (yaml) YAMLGenerator serializes string with special
+  chars unquoted when using `MINIMIZE_QUOTES` mode
+ (2.11.0)

release-notes/VERSION-2.x

@@ -10,11 +10,14 @@ Modules:
 
 2.11.0 (not yet released)
 
-#7: Add `CsvParser.Feature.EMPTY_STRING_AS_NULL` to allow coercing empty Strings
+#7: (csv) Add `CsvParser.Feature.EMPTY_STRING_AS_NULL` to allow coercing empty Strings
   into `null` values
  (contributed by Tyler C-R)
-#115: JsonProperty index is not honored by CsvSchema builder
+#115: (csv) JsonProperty index is not honored by CsvSchema builder
  -- actually fixed by [databind#2555]
+#180: (yaml) YAMLGenerator serializes string with special chars unquoted when
+  using `MINIMIZE_QUOTES` mode
+ (reported, fix contributed by Timo R)
 
 2.10.4 (not yet released)
 

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

@@ -197,14 +197,6 @@ private Feature(boolean defaultState) {
             "null", "Null", "NULL"
     ));
 
-    /**
-     * As per YAML <a href="https://yaml.org/spec/1.2/spec.html#id2788859">Plain Style</a>unquoted strings are
-     * restriced to a reduced charset and must be quoted in case they contain one of the following characters.
-     */
-    private final static Set<String> SPECIAL_CHARS = new HashSet<>(Arrays.asList(
-            ":", "#", "[", "]", "{", "}", ","
-    ));
-    
     /*
     /**********************************************************
     /* Configuration
@@ -989,16 +981,28 @@ private boolean _valueNeedsQuoting(String name) {
         case 'Y': // Y/Yes/YES
             return MUST_QUOTE_VALUES.contains(name);
         }
-        return stringContainsItemFromList(name, SPECIAL_CHARS.toArray(new String[]{}));
+        return _valueHasQuotableChar(name);
     }
 
-    private static boolean stringContainsItemFromList(String inputStr, String[] items) {
-        for(int i =0; i < items.length; i++) {
-            if (inputStr.contains( items[i] )) {
+    /**
+     * As per YAML <a href="https://yaml.org/spec/1.2/spec.html#id2788859">Plain Style</a>unquoted
+     * strings are restricted to a reduced charset and must be quoted in case they contain
+     * one of the following characters.
+     */
+    private static boolean _valueHasQuotableChar(String inputStr) {
+        for (int i = 0, end = inputStr.length(); i < end; ++i) {
+            switch (inputStr.charAt(i)) {
+            case ':':
+            case '#':
+            case '[':
+            case ']':
+            case '{':
+            case '}':
+            case ',':
                 return true;
+            default:
             }
         }
-
         return false;
     }
 

yaml/src/test/java/com/fasterxml/jackson/dataformat/yaml/ser/GeneratorWithMinimizeTest.java

@@ -92,44 +92,39 @@ public void testMinimizeQuotesWithNulls() throws Exception
     }
 
     public void testMinimizeQuotesWithStringsContainingSpecialChars() throws Exception {
-        Map<String, Object> content = new HashMap<String, Object>();
-        content.put("key", "a:b");
+        Map<String, String> content;
+
+        content = Collections.singletonMap("key", "a:b");
         String yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a:b\"", yaml);
 
-        content.clear();
-        content.put("key", "a#b");
+        content = Collections.singletonMap("key", "a#b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a#b\"", yaml);
 
-        content.clear();
-        content.put("key", "a[b");
+        content = Collections.singletonMap("key", "a[b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a[b\"", yaml);
 
-        content.clear();
-        content.put("key", "a]b");
+        content = Collections.singletonMap("key", "a]b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a]b\"", yaml);
 
-        content.clear();
-        content.put("key", "a{b");
+        content = Collections.singletonMap("key", "a{b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a{b\"", yaml);
 
-        content.clear();
-        content.put("key", "a}b");
+        content = Collections.singletonMap("key", "a}b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a}b\"", yaml);
 
-        content.clear();
-        content.put("key", "a,b");
+        content = Collections.singletonMap("key", "a,b");
         yaml = MINIM_MAPPER.writeValueAsString(content).trim();
         assertEquals("---\n" +
                 "key: \"a,b\"", yaml);