Change in external repo not detected #61

Author: tinder-maxwellelliott

src/main/java/com/bazel_diff/BazelRule.java

@@ -4,6 +4,7 @@
 import java.security.NoSuchAlgorithmException;
 import java.util.List;
 import com.google.devtools.build.lib.query2.proto.proto2api.Build;
+import java.util.stream.Collectors;
 
 interface BazelRule {
     byte[] getDigest() throws NoSuchAlgorithmException;
@@ -32,11 +33,26 @@ public byte[] getDigest() throws NoSuchAlgorithmException {
 
     @Override
     public List<String> getRuleInputList() {
-        return rule.getRuleInputList();
+        return rule.getRuleInputList()
+                   .stream()
+                   .map(ruleInput -> transformRuleInput(ruleInput))
+                   .collect(Collectors.toList());
     }
 
     @Override
     public String getName() {
         return rule.getName();
     }
+
+    private String transformRuleInput(String ruleInput) {
+        if (ruleInput.startsWith("@")) {
+            String[] splitRule = ruleInput.split("//");
+            if (splitRule.length == 2) {
+                String externalRule = splitRule[0];
+                externalRule = externalRule.replaceFirst("@", "");
+                return String.format("//external:%s", externalRule);
+            }
+        }
+        return ruleInput;
+    }
 }