add cangjie binding (#117)

cangjie/src/main.cj

@@ -0,0 +1,11 @@
+import ruapu.*
+main(): Int64 {
+    ruapu_init()
+    let neon_supported = ruapu_supports("neon")
+    println("supports neon: ${neon_supported}") 
+    let d = ruapu_rua()
+    for (i in d) {
+        println(i)
+    }
+    return 0
+}

cangjie/src/ruapu/ruapu.cj

@@ -0,0 +1,30 @@
+package ruapu
+
+from std import collection.ArrayList
+
+foreign func ruapu_init_c(): Unit
+
+foreign func ruapu_supports_c(s: CString): Int32
+
+foreign func ruapu_rua_c(): CPointer<CString>
+
+public func ruapu_init(): Unit {
+    unsafe{ ruapu_init_c() }
+}
+
+public func ruapu_supports(isa: String): Bool {
+    var isa_c = unsafe { LibC.mallocCString(isa) }
+    let result_c = unsafe { ruapu_supports_c(isa_c) }
+    return result_c == 1
+}
+
+public func ruapu_rua(): Array<String> {
+    var ruaList = ArrayList<String>()
+    var sp = unsafe { ruapu_rua_c() }
+    while(!unsafe { sp.read().isNull() }) {
+        let temp = unsafe { sp.read() }
+        ruaList.append(temp.toString())
+        sp = unsafe { sp + 1 }
+    }
+    return Array<String>(ruaList)
+}