--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/name/blackcap/imageprep/Files.kt	Thu Jul 16 19:57:23 2020 -0700
@@ -0,0 +1,99 @@
+/*
+ * For dealing with files.
+ */
+package name.blackcap.imageprep
+
+import java.io.BufferedReader
+import java.io.File
+import java.io.FileInputStream
+import java.io.InputStreamReader
+import java.util.Properties
+import java.util.logging.FileHandler
+import java.util.logging.Level
+import java.util.logging.Logger
+import java.util.logging.SimpleFormatter
+
+/* OS Type */
+
+enum class OS {
+    MAC, UNIX, WINDOWS, OTHER;
+    companion object {
+        private val rawType = System.getProperty("os.name")?.toLowerCase()
+        val type = if (rawType == null) {
+                OTHER
+            } else if (rawType.contains("win")) {
+                WINDOWS
+            } else if (rawType.contains("mac")) {
+                MAC
+            } else if (rawType.contains("nix") || rawType.contains("nux") || rawType.contains("aix") || rawType.contains("sunos")) {
+                UNIX
+            } else {
+                OTHER
+            }
+    }
+}
+
+/* joins path name components to java.io.File */
+
+fun joinPath(base: String, vararg rest: String) = rest.fold(File(base), ::File)
+
+/* file names */
+
+private val SHORTNAME = "imageprep"
+private val LONGNAME = "name.blackcap." + SHORTNAME
+private val HOME = System.getenv("HOME")
+val PF_DIR = when (OS.type) {
+    OS.MAC -> joinPath(HOME, "Library", "Application Support", LONGNAME)
+    OS.WINDOWS -> joinPath(System.getenv("APPDATA"), LONGNAME)
+    else -> joinPath(HOME, "." + SHORTNAME)
+}
+val LF_DIR = when (OS.type) {
+    OS.MAC -> joinPath(HOME, "Library", "Application Support", LONGNAME)
+    OS.WINDOWS -> joinPath(System.getenv("LOCALAPPDATA"), LONGNAME)
+    else -> joinPath(HOME, "." + SHORTNAME)
+}
+val PROP_FILE = File(PF_DIR, SHORTNAME + ".properties")
+val LOG_FILE = File(LF_DIR, SHORTNAME + ".log")
+
+/* make some needed directories */
+
+private fun File.makeIfNeeded() = if (exists()) { true } else { mkdirs() }
+
+/* make some usable objects */
+
+val CHARSET = "UTF-8"
+
+private val DPNAME = "default.properties"
+val DPROPERTIES = Properties().apply {
+    val rawStream = OS::class.java.getResourceAsStream(DPNAME)
+    BufferedReader(InputStreamReader(rawStream, CHARSET)).use {
+        load(it)
+    }
+}
+
+val PROPERTIES = Properties(DPROPERTIES).apply {
+    PF_DIR.makeIfNeeded()
+    if (PROP_FILE.exists()) {
+        BufferedReader(InputStreamReader(FileInputStream(PROP_FILE), CHARSET)).use  {
+            load(it)
+        }
+    } else {
+        FileOutputStream(PROP_FILE).use { output ->
+            OS::class.java.getResourceAsStream(DPNAME).use { input ->
+                input.copyTo(output)
+            }
+        }
+    }
+}
+
+val LOGGER = run {
+    System.setProperty("java.util.logging.SimpleFormatter.format",
+        "%1\$tFT%1\$tT%1\$tz %2\$s%n%4\$s: %5\$s%6\$s%n")
+    LF_DIR.makeIfNeeded()
+    Logger.getLogger(LONGNAME).apply {
+        addHandler(FileHandler(LOG_FILE.toString()).apply {
+            formatter = SimpleFormatter() })
+        level = Level.CONFIG
+        useParentHandlers = false
+    }
+}