Rework using click

.gitignore

@@ -0,0 +1,4 @@
+.direnv
+.envrc
+__pycache__
+cue_to_meta.egg-info

.pre-commit-config.yaml

@@ -15,4 +15,4 @@ repos:
     rev: 22.3.0
     hooks:
       - id: black
-        language_version: python3.10
+        language_version: python3.9

cue_to_meta.py

@@ -26,33 +26,15 @@
 import re
 import sys
 
+import click
 
-def cue_to_meta(cue_file):
-    meta_file = re.sub(r"cue$", "meta", cue_file)
-
-    try:
-        with open(cue_file) as f:
-            cue = f.readlines()
-    except FileNotFoundError:
-        sys.stderr.write("{} not found\n".format(cue_file))
-        sys.exit(1)
-    except IsADirectoryError:
-        sys.stderr.write("{} is a directory\n".format(cue_file))
-        sys.exit(1)
-    except PermissionError:
-        sys.stderr.write("No permission to read {}\n".format(cue_file))
-        sys.exit(1)
-    except OSError:
-        sys.stderr.write("OS error trying to read {}\n".format(cue_file))
-        sys.exit(1)
 
+def cue_to_meta(cuefile, metafile):
     title = None
     performer = None
     timestamp = None
 
-    try:
-        with open(meta_file, "w") as f:
-            for line in cue:
+    for line in cuefile.readlines():
         title_re = re.search(r'^    TITLE "(.*)"$', line)
         performer_re = re.search(r'^    PERFORMER "(.*)"$', line)
         index_re = re.search(r"^    INDEX 01 (.*)$", line)
@@ -64,20 +46,15 @@ def cue_to_meta(cue_file):
             time_re = re.search(r"^(..):(..):..$", index_re[1])
             timestamp = "00{}{}".format(time_re[1], time_re[2])
         if title and performer and timestamp:
-                    f.write("{}:{} - {}\n".format(timestamp, performer, title))
+            metafile.write("{}:{} - {}\n".format(timestamp, performer, title))
             title = None
             performer = None
             timestamp = None
-    except IsADirectoryError:
-        sys.stderr.write("{} is a directory\n".format(meta_file))
-        sys.exit(1)
-    except PermissionError:
-        sys.stderr.write("No permission to write {}\n".format(meta_file))
-        sys.exit(1)
-    except OSError:
-        sys.stderr.write("OS error trying to write {}\n".format(meta_file))
-        sys.exit(1)
 
 
-if __name__ == "__main__":
-    cue_to_meta(sys.argv[1])
+@click.command()
+@click.argument("cuefile", type=click.File("r"))
+@click.argument("metafile", type=click.File("w"))
+def cli(cuefile, metafile):
+    """Convert CUEFILE to meta format as METAFILE."""
+    cue_to_meta(cuefile, metafile)

pyproject.toml

@@ -1,2 +1,6 @@
+[build-system]
+requires = ["setuptools >= 40.9.0"]
+build-backend = "setuptools.build_meta"
+
 [tool.isort]
 profile = "black"

setup.cfg

@@ -0,0 +1,10 @@
+[metadata]
+name = cue_to_meta
+version = 0.1.0
+
+[options]
+py_modules = cue_to_meta
+install_requires = Click
+
+[options.entry_points]
+console_scripts = cue_to_meta = cue_to_meta:cli