Kotlin: make wrapper more robust for windows

Author: redsun82

java/kotlin-extractor/current_kotlin_version.py

@@ -5,9 +5,10 @@
 kotlinc = shutil.which('kotlinc')
 if kotlinc is None:
     raise Exception("kotlinc not found")
-output = subprocess.run([kotlinc, "-version"], text=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE,
-                        check=True).stderr
-m = re.match(r'.* kotlinc-jvm ([0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z][a-zA-Z0-9]*)?) .*', output)
+res = subprocess.run([kotlinc, "-version"], text=True, stdout=subprocess.DEVNULL, stderr=subprocess.PIPE)
+if res.returncode != 0:
+    raise Exception(f"kotlinc -version failed: {res.stderr}")
+m = re.match(r'.* kotlinc-jvm ([0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z][a-zA-Z0-9]*)?) .*', res.stderr)
 if m is None:
-    raise Exception(f'Cannot detect version of kotlinc (got {output})')
+    raise Exception(f'Cannot detect version of kotlinc (got {res.stderr})')
 print(m[1])

java/kotlin-extractor/deps/dev/kotlinc

@@ -28,7 +28,6 @@ import io
 import os
 
 DEFAULT_VERSION = "1.9.0"
-DEVNULL = open(os.devnull, "w")
 
 def options():
     parser = argparse.ArgumentParser(add_help=False)
@@ -80,7 +79,12 @@ def get_version():
 
 
 def install(version: str, quiet: bool):
-    info_out = DEVNULL if quiet else sys.stderr
+    if quiet:
+        info_out = subprocess.DEVNULL
+        info = lambda *args: None
+    else:
+        info_out = sys.stderr
+        info = lambda *args: print(*args, file=sys.stderr)
     url = url_template.format(version=version)
     if install_dir.exists():
         shutil.rmtree(install_dir)
@@ -89,20 +93,20 @@ def install(version: str, quiet: bool):
     if ripunzip is None and platform.system() == "Windows" and windows_ripunzip.exists():
         ripunzip = windows_ripunzip
     if ripunzip:
-        print(f"downloading and extracting {url} using ripunzip", file=info_out)
+        info(f"downloading and extracting {url} using ripunzip")
         subprocess.run([ripunzip, "unzip-uri", url], stdout=info_out, stderr=info_out, cwd=install_dir,
                        check=True)
         return
     with io.BytesIO() as buffer:
-        print(f"downloading {url}", file=info_out)
+        info(f"downloading {url}")
         with urllib.request.urlopen(url) as response:
             while True:
                 bytes = response.read()
                 if not bytes:
                     break
                 buffer.write(bytes)
         buffer.seek(0)
-        print(f"extracting kotlin-compiler-{version}.zip", file=info_out)
+        info(f"extracting kotlin-compiler-{version}.zip")
         with ZipFilePreservingPermissions(buffer) as archive:
             archive.extractall(install_dir)