Add startsWith style name matcher

1 files changed, 14 insertions, 2 deletions

diff --git a/lib/styles/document-matchers.js b/lib/styles/document-matchers.js
index 38ac049..3f7fbdd 100644
--- a/lib/styles/document-matchers.js
+++ b/lib/styles/document-matchers.js
@@ -6,6 +6,7 @@ exports.underline = new Matcher("underline");
 exports.strikethrough = new Matcher("strikethrough");
 exports.commentReference = new Matcher("commentReference");
 exports.equalTo = equalTo;
+exports.startsWith = startsWith;
 
 
 function paragraph(options) {
@@ -42,11 +43,22 @@ function isList(element, levelIndex, isOrdered) {
 
 function equalTo(value) {
     return {
-        operator: equals,
+        operator: operatorEqualTo,
         operand: value
     };
 }
 
-function equals(first, second) {
+function startsWith(value) {
+    return {
+        operator: operatorStartsWith,
+        operand: value
+    };
+}
+
+function operatorEqualTo(first, second) {
     return first.toUpperCase() === second.toUpperCase();
 }
+
+function operatorStartsWith(first, second) {
+    return second.toUpperCase().indexOf(first.toUpperCase()) === 0;
+}