[server] add module

src/app/haxe/ru/m/update/Version.hx

@@ -0,0 +1,52 @@
+package ru.m.update;
+
+abstract Version(Array<Int>) {
+
+    public function new(mayor:Int, minor:Int, patch:Int, snapshot:Bool = false) {
+        this = [
+            mayor,
+            minor,
+            patch,
+            snapshot ? -1 : 0,
+        ];
+    }
+
+    @:arrayAccess public inline function get(key:Int) return this[key];
+
+    public function compare(other:Version):Int {
+        if (other == null) {
+            return 1;
+        }
+        for (i in 0...4) {
+            var d = this[i] - other[i];
+            if (d != 0) {
+                return d;
+            }
+        }
+        return 0;
+    }
+
+    @:op(A > B) static function gt(a:Version, b:Version):Bool return a.compare(b) > 0;
+
+    @:op(A == B) static function eq(a:Version, b:Version):Bool return a.compare(b) == 0;
+
+    @:op(A < B) static function lt(a:Version, b:Version):Bool return a.compare(b) < 0;
+
+    @:from public static function fromString(value:String):Version {
+        var r = ~/(\d+)\.(\d+)\.(\d+)(-SNAPSHOT)?/;
+        return if (r.match(value)) {
+            new Version(
+            Std.parseInt(r.matched(1)),
+            Std.parseInt(r.matched(2)),
+            Std.parseInt(r.matched(3)),
+            r.matched(4) != null
+            );
+        } else {
+            new Version(0, 0, 0);
+        }
+    }
+
+    @:to public function toString():String {
+        return '${this[0]}.${this[1]}.${this[2]}${this[3] < 0 ? "-SNAPSHOT" : ""}';
+    }
+}