Handle exception while parsing Java resource string

gp-res-filter/src/main/java/com/ibm/g11n/pipeline/resfilter/impl/JavaPropertiesResource.java

@@ -627,7 +627,19 @@ private static String unescape(String str) {
     public static String ConvertDoubleSingleQuote(String inputStr){
         String outputStr = "";
         boolean needConvert = false;
-        MessagePattern msgPat = new MessagePattern(inputStr);
+        MessagePattern msgPat = null;
+        try {
+            msgPat = new MessagePattern(inputStr);
+        } catch (IllegalArgumentException e) {
+            // not a message format pattern - fall through
+        } catch (IndexOutOfBoundsException e) {
+            // might be a valid message format pattern, but cannot handle this - fall through
+        }
+        if (msgPat == null) {
+            // if the string cannot be parsed as a MessageFormat pattern string,
+            // just returns the input string.
+            return inputStr;
+        }
 
         int numParts = msgPat.countParts();
 

gp-res-filter/src/test/java/com/ibm/g11n/pipeline/resfilter/impl/JavaPropertiesResourceTest.java

@@ -91,10 +91,13 @@ public class JavaPropertiesResourceTest {
 
         lst.add(ResourceString.with("withTabs", "Tab1\tTab2\tTab3\t").sequenceNumber(9)
                 .notes(Arrays.asList(" tabs")).build());
-        
+
         lst.add(ResourceString.with("withQuote", "You're about to delete '{0}' rows in Mike's file {0}.")
                 .sequenceNumber(10).notes(Arrays.asList(" Quote")).build());
-
+
+        lst.add(ResourceString.with("non-param", "This {} is not a parameter.")
+                .sequenceNumber(11).notes(Arrays.asList(" Not a Java MessageFormat param")).build());
+
         Collections.sort(lst, new ResourceStringComparator());
         EXPECTED_INPUT_RES_LIST = lst;
     }
@@ -123,6 +126,8 @@ public class JavaPropertiesResourceTest {
                 Arrays.asList(" tabs"));
         bundleBuilder.addResourceString("withQuote", "You're about to delete '{1}' rows in Mike's file {0}.", 10,
                 Arrays.asList(" Quote"));
+        bundleBuilder.addResourceString("non-param", "This {} is not a parameter.", 11,
+                Arrays.asList(" Not a Java MessageFormat param"));
         bundleBuilder.addNotes(Arrays.asList(
                 " You are reading the \".properties\" entry.",
                 " The exclamation mark can also mark text as comments.",
@@ -145,6 +150,9 @@ public class JavaPropertiesResourceTest {
         EXPECTED_PROP_DEF_LIST.add(new PropDef("leadTabs", "leading tabs", PropSeparator.EQUAL));
         EXPECTED_PROP_DEF_LIST.add(new PropDef("trailSPs", "trailing SPs  ", PropSeparator.EQUAL));
         EXPECTED_PROP_DEF_LIST.add(new PropDef("withTabs", "Tab1\tTab2\tTab3\t", PropSeparator.EQUAL));
+        // PropDef does not detect message pattern - message pattern handling is done by the logic in JavaPropertiesResource class
+        EXPECTED_PROP_DEF_LIST.add(new PropDef("withQuote", "You''re about to delete '{1}' rows in Mike''s file {0}.", PropSeparator.EQUAL));
+        EXPECTED_PROP_DEF_LIST.add(new PropDef("non-param", "This {} is not a parameter.", PropSeparator.EQUAL));
     }
 
     private static final JavaPropertiesResource res = new JavaPropertiesResource();

gp-res-filter/src/test/resource/resfilter/properties/input.properties

@@ -23,3 +23,5 @@ trailSPs = trailing SPs
 withTabs = Tab1\tTab2\tTab3\t
 # Quote
 withQuote = You''re about to delete '{0}' rows in Mike''s file {0}.
+# Not a Java MessageFormat param
+non-param = This {} is not a parameter.

gp-res-filter/src/test/resource/resfilter/properties/merge-output.properties

@@ -23,3 +23,5 @@ trailSPs = localized trailing SPs
 withTabs = localized Tab1\tTab2\tTab3\t
 # Quote
 withQuote = You''re about to delete '{1}' rows in Mike''s file {0}.
+# Not a Java MessageFormat param
+non-param = This {} is not a parameter.

gp-res-filter/src/test/resource/resfilter/properties/parse-test-input.properties

@@ -7,3 +7,5 @@ tab : pick up the\u00A5 tab
 		leadTabs = leading tabs
 trailSPs = trailing SPs  
 withTabs = Tab1\tTab2\tTab3\t
+withQuote = You''re about to delete '{1}' rows in Mike''s file {0}.
+non-param = This {} is not a parameter.

gp-res-filter/src/test/resource/resfilter/properties/parseline-test-input.properties

@@ -7,3 +7,5 @@ leadSPs = leading SPs
 leadTabs = leading tabs
 trailSPs = trailing SPs  
 withTabs = Tab1\tTab2\tTab3\t
+withQuote = You''re about to delete '{1}' rows in Mike''s file {0}.
+non-param = This {} is not a parameter.

gp-res-filter/src/test/resource/resfilter/properties/write-output.properties

@@ -24,3 +24,5 @@ trailSPs = localized trailing SPs
 withTabs = localized Tab1\tTab2\tTab3\t
 # Quote
 withQuote = You''re about to delete '{1}' rows in Mike''s file {0}.
+# Not a Java MessageFormat param
+non-param = This {} is not a parameter.