VerifyKobaltZip.

modules/kobalt-plugin-api/src/main/kotlin/com/beust/kobalt/Args.kt

@@ -56,5 +56,9 @@ class Args {
 
     @Parameter(names = arrayOf("--update"), description = "Update to the latest version of Kobalt")
     var update: Boolean = false
+
+    @Parameter(names = arrayOf("--verifyDistribution"), description = "Verify the distribution",
+            hidden = true)
+    var verifyDistribution: Boolean = false
 }
 

src/main/kotlin/com/beust/kobalt/Main.kt

@@ -5,10 +5,7 @@ import com.beust.kobalt.api.IClasspathDependency
 import com.beust.kobalt.api.Kobalt
 import com.beust.kobalt.api.PluginTask
 import com.beust.kobalt.api.Project
-import com.beust.kobalt.app.BuildFileCompiler
+import com.beust.kobalt.app.*
-import com.beust.kobalt.app.MainModule
-import com.beust.kobalt.app.ProjectGenerator
-import com.beust.kobalt.app.UpdateKobalt
 import com.beust.kobalt.app.remote.KobaltClient
 import com.beust.kobalt.app.remote.KobaltServer
 import com.beust.kobalt.internal.PluginInfo
@@ -148,10 +145,12 @@ private class Main @Inject constructor(
         } else if (args.serverMode) {
             server.run()
         } else {
-            // Update doesn't require to parse the build file
+            // Options that don't need Build.kt to be parsed first
             if (args.update) {
                 // --update
                 updateKobalt.updateKobalt()
+            } else if (args.verifyDistribution) {
+                VerifyKobaltZip().run()
             } else {
                 //
                 // Everything below requires to parse the build file first

src/main/kotlin/com/beust/kobalt/app/VerifyKobaltZip.kt

@@ -0,0 +1,53 @@
+package com.beust.kobalt.app
+
+import com.beust.kobalt.KobaltException
+import com.beust.kobalt.api.Kobalt
+import com.beust.kobalt.misc.KFiles
+import com.beust.kobalt.misc.log
+import java.io.FileInputStream
+import java.util.jar.JarFile
+import java.util.jar.JarInputStream
+
+class VerifyKobaltZip {
+    fun run() {
+        var success = true
+        var foundKobaltw = false
+        var foundJar = false
+        var foundWrapperJar = false
+
+        val jarFilePath = "kobalt-" + Kobalt.version + ".jar"
+        val zipFilePath = KFiles.joinDir("kobaltBuild", "libs", "kobalt-" + Kobalt.version + ".zip")
+        val zipFile = JarFile(zipFilePath)
+        val stream = JarInputStream(FileInputStream(zipFilePath))
+        var entry = stream.nextEntry
+        while (entry != null) {
+            if (entry.name == "kobaltw") {
+                foundKobaltw = true
+            } else if (entry.name.endsWith(jarFilePath)) {
+                val ins = zipFile.getInputStream(entry)
+                if (ins.available() < 20000000) {
+                    throw KobaltException(jarFilePath + " is too small: " + jarFilePath)
+                }
+                foundJar = true
+            } else if (entry.name.endsWith("kobalt-wrapper.jar")) {
+                foundWrapperJar = true
+            } else {
+                success = false
+            }
+            entry = stream.nextEntry
+        }
+        if (! success) {
+            throw KobaltException("Found unexpected file in $zipFilePath")
+        }
+        if (! foundKobaltw) {
+            throw KobaltException("Couldn't find kobaltw in $zipFilePath")
+        }
+        if (! foundJar) {
+            throw KobaltException("Couldn't find jar in $zipFilePath")
+        }
+        if (! foundWrapperJar) {
+            throw KobaltException("Couldn't find wrapper jar in $zipFilePath")
+        }
+        log(1, "$zipFilePath looks correct")
+    }
+}