Improve temporaries management.

src/tscut/cli.py

@@ -60,7 +60,7 @@ def main() -> int:
 
     if args.coarse and args.threshold is not None:
         logger.error('--coarse and threshold arguments are exclusive.')
-        exit(-1)
+        return 2
 
     if (not args.coarse) and args.threshold is None:
         args.threshold = 0
@@ -80,7 +80,7 @@ def main() -> int:
         ts1, ts2 = parse_time_interval(interval)
         if ts1 is None or ts2 is None:
             logger.error("Illegal time interval: %s", interval)
-            exit(-1)
+            return 2
         parts.append((ts1,ts2))
 
     # Sort intervals
@@ -92,7 +92,7 @@ def main() -> int:
         ts1, ts2 = part
         if prevts > ts1:
             logger.error('Intervals are overlapping')
-            exit(-1)
+            return 2
         prevts = ts2
 
     config = ProcessingOptions(
@@ -110,8 +110,8 @@ def main() -> int:
         all_optional_tools = all_optional_tools)
 
     logger.debug("Configuration: %s", config)
+    temporaries = TemporaryFiles(config.keep_temporaries)
     try:
-        temporaries = TemporaryFiles(config.keep_temporaries)
         process_recording(config, temporaries)
     except TSCutError as exc:
         logger.error("%s", exc)

src/tscut/temporaries.py

@@ -25,5 +25,14 @@ class TemporaryFiles:
         for f in self._files:
             path = os.path.realpath(f.name)
             logger.info("Removing: %s", path)
-            f.close()
-            os.unlink(path)
+            try:
+                f.close()
+                os.unlink(path)
+            except OSError:
+                logger.exception("Unable to remove temporary file: %s", path)
+
+    def __enter__(self) -> Self:
+        return self
+
+    def __exit__(self, ...) -> None:
+        self.cleanup()