Implement coverage measurement - closes #25

build.gradle

@@ -27,6 +27,10 @@ task importFrom4ByteDirectory(type: JavaExec) {
     classpath = sourceSets.main.runtimeClasspath
 }
 
+task coverage(type: JavaExec) {
+    main = "org.ethereum.lists.methodsignatures.CoverageKt"
+    classpath = sourceSets.main.runtimeClasspath
+}
 
 task importFromSolidityDirectory(type: JavaExec) {
     main = "org.ethereum.lists.methodsignatures.ImportSolidityDirectoryKt"

src/main/kotlin/org/ethereum/lists/methodsignatures/Coverage.kt

@@ -0,0 +1,32 @@
+package org.ethereum.lists.methodsignatures
+
+import okhttp3.internal.io.FileSystem.SYSTEM
+import okio.GzipSource
+import okio.Okio.buffer
+import org.kethereum.methodsignatures.FileBackedMethodSignatureStore
+import java.io.File
+
+fun main(args: Array<String>) {
+    val store = FileBackedMethodSignatureStore(signatureDirectory)
+
+    var found = 0
+    var missed = 0
+
+    val bufferedSource = buffer(GzipSource(SYSTEM.source(File("signatures_sorted_counted.lst.gz"))))
+    while (true) {
+        val line = bufferedSource.readUtf8Line()
+        if (line != null) {
+            val (count, signatureInfo) = line.trim().split(" ")
+            val (signature, calldataLength) = signatureInfo.split("-")
+            if (store.has(signature.replace("0x", ""))) {
+                found++
+            } else {
+                missed++
+            }
+        } else {
+            break
+        }
+
+    }
+    println("finished - found $found - missed $missed")
+}