added a compare version number helper method

hawtio · Apr 8, 2013 · 3d37290 · 3d37290
1 parent c4a6c58
commit 3d37290
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diff --git a/hawtio-web/src/main/webapp/app/core/js/helpers.ts b/hawtio-web/src/main/webapp/app/core/js/helpers.ts
@@ -579,4 +579,41 @@ module Core {
     }
     return null;
   }
+
+  /**
+   * Compares the 2 version arrays and returns -1 if v1 is less than v2 or 0 if they are equal or 1 if v1 is greater than v2
+   *
+   * @param v1 an array of version numbers with the most significant version first (major, minor, patch).
+   * @param v2
+   */
+  export function compareVersionNumberArrays(v1:number[], v2:number[]) {
+    if (v1 && !v2) {
+      return 1;
+    }
+    if (!v1 && v2) {
+      return -1;
+    }
+    if (v1 === v2) {
+      return 0;
+    }
+    for (var i = 0; i < v1.length; i++) {
+      var n1 = v1[i];
+      if (i >= v2.length) {
+        return 1;
+      }
+      var n2 = v2[i];
+      if (!angular.isDefined(n1)) {
+        return -1;
+      }
+      if (!angular.isDefined(n2)) {
+        return 1;
+      }
+      if (n1 > n2) {
+        return 1;
+      } else if (n1 < n2) {
+        return -1;
+      }
+    }
+    return 0;
+  }
 }
diff --git a/hawtio-web/src/test/specs/spec/CoreSpec.js b/hawtio-web/src/test/specs/spec/CoreSpec.js
@@ -34,4 +34,18 @@ describe("Core", function() {
     expect(Core.parseVersionNumbers("camel-2.3.45.jar")).toEqual([2, 3, 45]);
     expect(Core.parseVersionNumbers("camel-55.3.45.jar")).toEqual([55, 3, 45]);
   });
+
+  it("compare version numbers", function() {
+    function compareVersion(text, version, expectedValue) {
+      var actualVersion = Core.parseVersionNumbers(text);
+      var compared = Core.compareVersionNumberArrays(actualVersion, version);
+      expect(compared).toEqual(expectedValue);
+    }
+    expect(compareVersion("camel-2.1.jar", [2, 1], 0));
+    expect(compareVersion("camel-2.11.jar", [2, 10], 1));
+    expect(compareVersion("camel-2.11.0.jar", [2, 10], 1));
+    expect(compareVersion("camel-2.11.jar", [2, 12], -1));
+    expect(compareVersion("camel-2.11.2.jar", [2, 12], -1));
+    expect(compareVersion("camel-2.11.2.jar", [2, 11, 3], -1));
+  });
 });