modular first test

src/net/torvald/terrarum/ModuleManager.kt

@@ -0,0 +1,77 @@
+package net.torvald.terrarum
+
+import org.apache.commons.csv.CSVFormat
+import org.apache.commons.csv.CSVParser
+import java.io.File
+import java.io.FileNotFoundException
+import java.nio.file.FileSystems
+
+/**
+ * Modules Resource Manager
+ *
+ * Created by SKYHi14 on 2017-04-17.
+ */
+object ModuleManager {
+
+    data class ModuleMetadata(val order: Int, val isDir: Boolean, val desc: String, val libraries: Array<String>) {
+        override fun toString() =
+            "\tModule #$order -- $desc\n" +
+            "\tExternal libraries: ${libraries.joinToString(", ")}"
+    }
+    const val modDir = "./assets/modules"
+
+    val moduleInfo = HashMap<String, ModuleMetadata>()
+
+    init {
+        // load modules
+        val loadOrderCSVparser = CSVParser.parse(
+                FileSystems.getDefault().getPath("$modDir/LoadOrder.csv").toFile(),
+                Charsets.UTF_8,
+                CSVFormat.DEFAULT.withCommentMarker('#')
+        )
+        val loadOrder = loadOrderCSVparser.records
+        loadOrderCSVparser.close()
+
+
+        loadOrder.forEachIndexed { index, it ->
+            val moduleName = it[0]
+            println("[ModuleManager] Loading module $moduleName")
+
+            val description = it[1]
+            val libs = it[2].split(';').toTypedArray()
+            val isDir = FileSystems.getDefault().getPath("$modDir/$moduleName").toFile().isDirectory
+            moduleInfo[moduleName] = ModuleMetadata(index, isDir, description, libs)
+
+            println(moduleInfo[moduleName])
+        }
+    }
+
+    private fun checkExistence(module: String) {
+        if (!moduleInfo.containsKey(module))
+            throw FileNotFoundException("No such module: $module")
+    }
+    private fun String.sanitisePath() = if (this[0] == '/' || this[0] == '\\')
+        this.substring(1..this.lastIndex)
+    else this
+
+
+
+    fun getPath(module: String, path: String): String {
+        checkExistence(module)
+        return "$modDir/$module/${path.sanitisePath()}"
+    }
+    fun getFile(module: String, path: String): File {
+        checkExistence(module)
+        return FileSystems.getDefault().getPath(getPath(module, path)).toFile()
+    }
+    fun getFiles(module: String, path: String): Array<File> {
+        checkExistence(module)
+        val dir = FileSystems.getDefault().getPath(getPath(module, path)).toFile()
+        if (!dir.isDirectory) {
+            throw FileNotFoundException("The path is not a directory")
+        }
+        else {
+            return dir.listFiles()
+        }
+    }
+}