Print filenames in the diff
diff --git a/pre_commit_hooks/pretty_format_json.py b/pre_commit_hooks/pretty_format_json.py
index f5476a5..fa83305 100644
--- a/pre_commit_hooks/pretty_format_json.py
+++ b/pre_commit_hooks/pretty_format_json.py
@@ -1,11 +1,11 @@
from __future__ import print_function
import argparse
-import difflib
import io
import json
import sys
from collections import OrderedDict
+from difflib import unified_diff
from typing import List
from typing import Mapping
from typing import Optional
@@ -56,11 +56,11 @@
return s.split(',')
-def get_diff(source, target): # type: (str, str) -> str
+def get_diff(source, target, file): # type: (str, str, str) -> str
source_lines = source.splitlines(True)
target_lines = target.splitlines(True)
- diff = ''.join(difflib.unified_diff(source_lines, target_lines))
- return diff
+ diff = unified_diff(source_lines, target_lines, fromfile=file, tofile=file)
+ return ''.join(diff)
def main(argv=None): # type: (Optional[Sequence[str]]) -> int
@@ -129,7 +129,13 @@
if args.autofix:
_autofix(json_file, pretty_contents)
else:
- print(get_diff(''.join(contents), pretty_contents))
+ print(
+ get_diff(
+ ''.join(contents),
+ pretty_contents,
+ json_file,
+ ),
+ )
status = 1
except ValueError:
