gradle: Add LOGLEVEL envvar to control debug output

Author: hadess

gradle/README.md

@@ -122,3 +122,9 @@ the manual commands above to ship in your Flatpak repository, so you can run:
 $ flatpak run --command=bash --share=network --filesystem=`pwd` -d org.freedesktop.Sdk//21.08 ./script.sh
 $ flatpak-gradle-generator.py gradle-log.txt gradle-dependencies.json
 ```
+
+If necessary, you can modify the level of output from the script by setting the
+`LOGLEVEL` environment variable to a [supported log level](https://docs.python.org/3/library/logging.html#logging-levels):
+```
+$ LOGLEVEL=debug flatpak-gradle-generator.py gradle-log.txt gradle-dependencies.json
+```

gradle/flatpak-gradle-generator.py

@@ -8,6 +8,7 @@
 import hashlib
 import logging
 import re
+import os
 
 arches = {
         'linux-x86_64': 'x86_64',
@@ -63,6 +64,9 @@ def flatpak_arch_to_gradle_arch(arch):
     return rev_arches[arch]
 
 def main():
+    logging.basicConfig(
+        level=os.environ.get('LOGLEVEL', 'WARNING').upper()
+    )
     parser = argparse.ArgumentParser()
     parser.add_argument('input', help='The gradle log file')
     parser.add_argument('output', help='The output JSON sources file')