Add preserveAcronyms support to objCEnumItemLabel. (#879)

Author: bzbarsky-apple

src-electron/generator/matter/app/zap-templates/templates/app/helper.js

@@ -395,7 +395,9 @@ function asCamelCase(label, firstLower, preserveAcronyms) {
 
   let str = tokens
     .map((token, index) => {
-      let isAcronym = token == token.toUpperCase();
+      let isAllUpperCase = token == token.toUpperCase();
+      // PERSONAL is not actually an acronym.
+      let isAcronym =  isAllUpperCase && token != "PERSONAL";
 
       if (isAcronym && preserveAcronyms) {
         return token;
@@ -408,14 +410,15 @@ function asCamelCase(label, firstLower, preserveAcronyms) {
           ? token[0].toLowerCase()
           : token[0].toUpperCase();
 
-      if (!isAcronym) {
+      if (!isAllUpperCase) {
         if (token.length > 1) {
           newToken += token.substring(1);
         }
         return newToken;
       }
 
-      // if preserveAcronyms is false, then anything beyond the first letter becomes lower-case.
+      // If this is an all-upper-case thing not being preserved as an acronym,
+      // then anything beyond the first letter becomes lower-case.
       if (token.length > 1) {
         newToken += token.substring(1).toLowerCase();
       }

src-electron/generator/matter/darwin/Framework/CHIP/templates/helper.js

@@ -318,7 +318,11 @@ function objCEnumName(clusterName, enumLabel, options) {
   return 'MTR' + clusterName + enumLabel;
 }
 
-function objCEnumItemLabel(itemLabel) {
+function objCEnumItemLabel(itemLabel, options) {
+  if (options.hash.preserveAcronyms) {
+    return appHelper.asUpperCamelCase.call(this, itemLabel, options);
+  }
+
   // Check for the case when we're:
   // 1. A single word (that's the regexp at the beginning, which matches the
   //    word-splitting regexp in string.toCamelCase).