Shorten filename parsing

Run pre-commit hooks

src/c++/perf_analyzer/genai-perf/genai_perf/export_data/csv_exporter.py

@@ -63,10 +63,9 @@ def __init__(self, config: ExporterConfig):
         self._args = config.args
 
     def export(self) -> None:
-        filename = str(self._args.profile_export_file)
-        if filename.endswith(".json"):
-            filename = filename[:-5]
-        filename += "_genai_perf.csv"
+        filename = (
+            self._output_dir / f"{self._args.profile_export_file.stem}_genai_perf.csv"
+        )
         logger.info(f"Generating {filename}")
 
         with open(filename, mode="w", newline="") as f:

src/c++/perf_analyzer/genai-perf/genai_perf/export_data/json_exporter.py

@@ -26,6 +26,7 @@
 
 
 import json
+import os
 from enum import Enum
 from typing import Dict
 
@@ -50,10 +51,10 @@ def __init__(self, config: ExporterConfig):
         self._merge_stats_and_args()
 
     def export(self) -> None:
-        filename = str(self._args["profile_export_file"])
-        if filename.endswith(".json"):
-            filename = filename[:-5]
-        filename += "_genai_perf.json"
+        prefix = os.path.splitext(os.path.basename(self._args["profile_export_file"]))[
+            0
+        ]
+        filename = self._output_dir / f"{prefix}_genai_perf.json"
         logger.info(f"Generating {filename}")
         with open(str(filename), "w") as f:
             f.write(json.dumps(self._stats_and_args, indent=2))

src/c++/perf_analyzer/genai-perf/tests/test_csv_exporter.py

@@ -133,7 +133,7 @@ def test_nonstreaming_llm_csv_output(
         """
         artifacts_dir = "artifacts/model_name-openai-chat-concurrency1"
         custom_filename = "custom_export.json"
-        expected_filename = f"{artifacts_dir}/custom_export_genai_perf.csv"
+        expected_filename = f"custom_export_genai_perf.csv"
         argv = [
             "genai-perf",
             "profile",