Added lastOrEmpty() extension function.

src/main/kotlin/net/thauvin/erik/mobibot/Mobibot.kt

@@ -36,6 +36,7 @@ import net.thauvin.erik.mobibot.Utils.appendIfMissing
 import net.thauvin.erik.mobibot.Utils.bot
 import net.thauvin.erik.mobibot.Utils.getIntProperty
 import net.thauvin.erik.mobibot.Utils.isChannelOp
+import net.thauvin.erik.mobibot.Utils.lastOrEmpty
 import net.thauvin.erik.mobibot.Utils.sendList
 import net.thauvin.erik.mobibot.Utils.sendMessage
 import net.thauvin.erik.mobibot.Utils.toIsoLocalDate
@@ -106,7 +107,7 @@ import java.util.regex.Pattern
 import kotlin.system.exitProcess
 
 @Version(properties = "version.properties", className = "ReleaseInfo", template = "version.mustache", type = "kt")
-class Mobibot(nickname: String, channel: String, logsDirPath: String, p: Properties) : ListenerAdapter() {
+class Mobibot(nickname: String, val channel: String, logsDirPath: String, p: Properties) : ListenerAdapter() {
     // The bot configuration.
     private val config: Configuration
 
@@ -116,9 +117,6 @@ class Mobibot(nickname: String, channel: String, logsDirPath: String, p: Propert
     // Tell module
     private val tell: Tell
 
-    /** Main channel. */
-    val channel: String
-
     /** Logger. */
     val logger: Logger = LoggerFactory.getLogger(Mobibot::class.java)
 
@@ -185,9 +183,7 @@ class Mobibot(nickname: String, channel: String, logsDirPath: String, p: Propert
             if (logger.isTraceEnabled) logger.trace("<<< ${user.nick}: ${event.message}")
             val cmds = event.message.trim().split(" ".toRegex(), 2)
             val cmd = cmds[0].lowercase()
-            val args = if (cmds.size > 1) {
+            val args = cmds.lastOrEmpty().trim()
-                cmds[1].trim()
-            } else ""
             if (cmd.startsWith(Constants.HELP_CMD)) { // help
                 helpResponse(event, args)
             } else if (!addons.exec(channel, cmd, args, event)) { // Execute command or module
@@ -217,9 +213,7 @@ class Mobibot(nickname: String, channel: String, logsDirPath: String, p: Propert
                 if (logger.isTraceEnabled) logger.trace(">>> $sender: $message")
                 val cmds = message.substring(message.indexOf(':') + 1).trim().split(" ".toRegex(), 2)
                 val cmd = cmds[0].lowercase()
-                val args = if (cmds.size > 1) {
+                val args = cmds.lastOrEmpty().trim()
-                    cmds[1].trim()
-                } else ""
                 if (cmd.startsWith(Constants.HELP_CMD)) { // mobibot: help
                     helpResponse(event, args)
                 } else {
@@ -354,7 +348,6 @@ class Mobibot(nickname: String, channel: String, logsDirPath: String, p: Propert
      * Initialize the bot.
      */
     init {
-        this.channel = channel
         val ircServer = p.getProperty("server", Constants.DEFAULT_SERVER)
         config = Configuration.Builder().apply {
             name = nickname

src/main/kotlin/net/thauvin/erik/mobibot/commands/links/View.kt

@@ -35,6 +35,7 @@ package net.thauvin.erik.mobibot.commands.links
 import net.thauvin.erik.mobibot.Utils.bot
 import net.thauvin.erik.mobibot.Utils.buildCmdSyntax
 import net.thauvin.erik.mobibot.Utils.helpFormat
+import net.thauvin.erik.mobibot.Utils.lastOrEmpty
 import net.thauvin.erik.mobibot.Utils.sendMessage
 import net.thauvin.erik.mobibot.commands.AbstractCommand
 import net.thauvin.erik.mobibot.commands.links.LinksMgr.Companion.entries
@@ -77,11 +78,7 @@ class View : AbstractCommand() {
             val split = query.split(" ", limit = 2)
             try {
                 start = split[0].toInt() - 1
-                query = if (split.size == 2) {
+                query = split.lastOrEmpty().trim()
-                    split[1].trim()
-                } else {
-                    ""
-                }
                 if (start > entries.links.size) {
                     start = 0
                 }

src/test/kotlin/net/thauvin/erik/mobibot/UtilsTest.kt

@@ -46,6 +46,7 @@ import net.thauvin.erik.mobibot.Utils.encodeUrl
 import net.thauvin.erik.mobibot.Utils.getIntProperty
 import net.thauvin.erik.mobibot.Utils.green
 import net.thauvin.erik.mobibot.Utils.helpFormat
+import net.thauvin.erik.mobibot.Utils.lastOrEmpty
 import net.thauvin.erik.mobibot.Utils.obfuscate
 import net.thauvin.erik.mobibot.Utils.plural
 import net.thauvin.erik.mobibot.Utils.red
@@ -187,6 +188,14 @@ class UtilsTest {
         assertThat(localDateTime.toIsoLocalDate(), "isoLocalDate(localDate)").isEqualTo("1952-02-17")
     }
 
+    @Test
+    fun testLastOrEmpty() {
+        val two = listOf("1", "2")
+        assertThat(two.lastOrEmpty(), "two").isEqualTo("2")
+        val one = listOf("1")
+        assertThat(one.lastOrEmpty(), "one").isEqualTo("")
+    }
+
     @Test
     fun testObfuscate() {
         assertThat(ascii.obfuscate(), "obfuscate()").all {