add support for gradle kotlin scripts

https://guides.gradle.org/migrating-build-logic-from-groovy-to-kotlin/
Closes fdroid/fdroidserver#613

cherry-picked from Bubu/fdroidserver@7d2e9f9c

fdroidserver/build.py

@@ -468,7 +468,7 @@ def build_local(app, build, vcs, build_dir, output_dir, log_dir, srclib_dir, ext
                 if f in files:
                     os.remove(os.path.join(root, f))
 
-        if any(f in files for f in ['build.gradle', 'settings.gradle']):
+        if any(f in files for f in ['build.gradle', 'build.gradle.kts', 'settings.gradle', 'settings.gradle.kts']):
             # Even when running clean, gradle stores task/artifact caches in
             # .gradle/ as binary files. To avoid overcomplicating the scanner,
             # manually delete them, just like `gradle clean` should have removed

fdroidserver/checkupdates.py

@@ -334,7 +334,7 @@ def try_init_submodules(app, last_build, vcs):
 def dirs_with_manifest(startdir):
     for root, dirs, files in os.walk(startdir):
         if any(m in files for m in [
-                'AndroidManifest.xml', 'pom.xml', 'build.gradle']):
+                'AndroidManifest.xml', 'pom.xml', 'build.gradle', 'build.gradle.kts']):
             yield root
 
 

fdroidserver/common.py

@@ -1301,7 +1301,8 @@ def manifest_paths(app_dir, flavours):
         [os.path.join(app_dir, 'AndroidManifest.xml'),
          os.path.join(app_dir, 'src', 'main', 'AndroidManifest.xml'),
          os.path.join(app_dir, 'src', 'AndroidManifest.xml'),
-         os.path.join(app_dir, 'build.gradle')]
+         os.path.join(app_dir, 'build.gradle'),
+         os.path.join(app_dir, 'build.gradle.kts')]
 
     for flavour in flavours:
         if flavour == 'yes':
@@ -1788,9 +1789,15 @@ def prepare_source(vcs, app, build, build_dir, srclib_dir, extlib_dir, onserver=
 
         if build.target:
             n = build.target.split('-')[1]
+            build_gradle = os.path.join(root_dir, "build.gradle")
+            build_gradle_kts = build_gradle + ".kts"
+            if os.path.exists(build_gradle):
+                gradlefile = build_gradle
+            elif os.path.exist(build_gradle_kts):
+                gradlefile = build_gradle_kts
             regsub_file(r'compileSdkVersion[ =]+[0-9]+',
                         r'compileSdkVersion %s' % n,
-                        os.path.join(root_dir, 'build.gradle'))
+                        gradlefile)
 
     # Remove forced debuggable flags
     remove_debuggable_flags(root_dir)
@@ -2381,9 +2388,13 @@ gradle_line_matches = [
 
 def remove_signing_keys(build_dir):
     for root, dirs, files in os.walk(build_dir):
+        gradlefile = None
         if 'build.gradle' in files:
-            path = os.path.join(root, 'build.gradle')
-
+            gradlefile = "build.gradle"
+        elif 'build.gradle.kts' in files:
+            gradlefile = "build.gradle.kts"
+        if gradlefile:
+            path = os.path.join(root, gradlefile)
             with open(path, "r") as o:
                 lines = o.readlines()
 
@@ -2421,7 +2432,7 @@ def remove_signing_keys(build_dir):
                         o.write(line)
 
             if changed:
-                logging.info("Cleaned build.gradle of keysigning configs at %s" % path)
+                logging.info("Cleaned %s of keysigning configs at %s" % (gradlefile, path))
 
         for propfile in [
                 'project.properties',

fdroidserver/import.py

@@ -299,7 +299,8 @@ def main():
         app.Categories = options.categories.split(',')
     if os.path.exists(os.path.join(subdir, 'jni')):
         build.buildjni = ['yes']
-    if os.path.exists(os.path.join(subdir, 'build.gradle')):
+    if os.path.exists(os.path.join(subdir, 'build.gradle')) \
+       or os.path.exists(os.path.join(subdir, 'build.gradle')):
         build.gradle = ['yes']
 
     package_json = os.path.join(build_dir, 'package.json')  # react-native

gradlew-fdroid

@@ -174,7 +174,7 @@ if [[ -n $wrapper_ver ]]; then
 fi
 
 # Earliest takes priority
-for f in {.,..}/build.gradle; do
+for f in {.,..}/build.gradle{,.kts}; do
     [[ -f $f ]] || continue
     while IFS='' read -r line || [ -n "$line" ]; do
         if [[ -z "$plugin_pver" && $line == *'com.android.tools.build:gradle:'* ]]; then