fix blank string condition for string lcfirst converting Haehnchen#786

Haehnchen · Haehnchen · commit a701f48f3b0e · 2016-09-18T11:47:18.000+02:00
diff --git a/src/fr/adrienbrault/idea/symfony2plugin/form/FormUnderscoreMethodReference.java b/src/fr/adrienbrault/idea/symfony2plugin/form/FormUnderscoreMethodReference.java
@@ -29,9 +29,14 @@ public FormUnderscoreMethodReference(@NotNull StringLiteralExpression element, @
     @NotNull
     @Override
     public ResolveResult[] multiResolve(boolean incompleteCode) {
+        String contents = getElement().getContents();
+        if(org.apache.commons.lang.StringUtils.isBlank(contents)) {
+            return new ResolveResult[0];
+        }
+
         Collection<PsiElement> psiElements = new ArrayList<>();
 
-        Set<String> methods = getCamelizeAndUnderscoreString(getElement().getContents());
+        Set<String> methods = getCamelizeAndUnderscoreString(contents);
 
         // provide setter fallback for non model class or or unknown methods
         for (String value : methods) {
diff --git a/src/fr/adrienbrault/idea/symfony2plugin/util/StringUtils.java b/src/fr/adrienbrault/idea/symfony2plugin/util/StringUtils.java
@@ -37,6 +37,10 @@ public static String ucfirst(String chaine){
 
     @NotNull
     public static String lcfirst(@NotNull String input){
+        if(input.length() < 1) {
+            return input;
+        }
+        
         return Character.toLowerCase(input.charAt(0)) +
             (input.length() > 1 ? input.substring(1) : "");
     }
