Support Kotlin dependencies

tests/samples/codefiles/kotlin.kt

@@ -0,0 +1,22 @@
+package com.wakatime
+
+import java.io.*
+import alpha.time.Some
+import bravo.charlie.something.Other
+
+<#assign licenseFirst = "/*">
+<#assign licensePrefix = " * ">
+<#assign licenseLast = " */">
+<#include "${project.licensePath}">
+<#if package?? && package != "">
+package ${package}
+</#if>
+
+import delta.io.*
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+    }
+}

tests/test_dependencies.py

@@ -448,3 +448,15 @@ class DependenciesTestCase(TestCase):
             expected_lines=21,
             entity='rust.rs',
         )
+
+    def test_kotlin_dependencies_detected(self):
+        self.shared(
+            expected_dependencies=[
+                'alpha.time',
+                'bravo.charlie',
+                'delta.io',
+            ],
+            expected_language='Kotlin',
+            expected_lines=22,
+            entity='kotlin.kt',
+        )

wakatime/dependencies/jvm.py

@@ -96,6 +96,65 @@ class JavaParser(TokenParser):
         pass
 
 
+class KotlinParser(TokenParser):
+    state = None
+    exclude = [
+        r'^java\.',
+    ]
+
+    def parse(self):
+        for index, token, content in self.tokens:
+            self._process_token(token, content)
+        return self.dependencies
+
+    def _process_token(self, token, content):
+        if self.partial(token) == 'Keyword':
+            self._process_keyword(token, content)
+        elif self.partial(token) == 'Text':
+            self._process_text(token, content)
+        elif self.partial(token) == 'Namespace':
+            self._process_namespace(token, content)
+        else:
+            self._process_other(token, content)
+
+    def _process_keyword(self, token, content):
+        self.state = content
+
+    def _process_text(self, token, content):
+        pass
+
+    def _process_namespace(self, token, content):
+        if self.state == 'import':
+            self.append(self._format(content))
+        self.state = None
+
+    def _process_other(self, token, content):
+        self.state = None
+
+    def _format(self, content):
+        content = content.split(u('.'))
+
+        if len(content) == 0:
+            return None
+
+        if len(content) == 1:
+            return content[0]
+
+        if len(content[0]) == 3:
+            content = content[1:]
+        if content[-1] == u('*'):
+            content = content[:len(content) - 1]
+
+        if len(content) == 0:
+            return None
+        elif len(content) == 1:
+            content = content[0]
+        elif len(content) > 1:
+            content = u('.').join(content[:2])
+
+        return content
+
+
 class ScalaParser(TokenParser):
     state = None