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-rw-r--r--bin/mutual_friends.py58
1 files changed, 42 insertions, 16 deletions
diff --git a/bin/mutual_friends.py b/bin/mutual_friends.py
index 8823619..b72b317 100644
--- a/bin/mutual_friends.py
+++ b/bin/mutual_friends.py
@@ -11,7 +11,7 @@ import sys
from vk.api import API, Language
from vk.user import UserField
-OUTPUT_FIELDS = UserField.UID, UserField.FIRST_NAME, UserField.LAST_NAME, UserField.SCREEN_NAME
+OUTPUT_FIELDS = UserField.UID, UserField.FIRST_NAME, UserField.LAST_NAME
def query_friend_list(api, user):
return api.friends_get(user.get_uid(), fields=OUTPUT_FIELDS)
@@ -22,22 +22,35 @@ def extract_output_fields(user):
new_user[str(field)] = user[field] if field in user else None
return new_user
-def print_mutual_friends_csv(mutual_friends):
- writer = csv.writer(sys.stdout, lineterminator='\n')
- for user in mutual_friends:
- user = extract_output_fields(user)
- writer.writerow(user.values())
+class OutputWriterCSV:
+ def __init__(self, fd=sys.stdout):
+ self._writer = csv.writer(fd, lineterminator='\n')
-def print_mutual_friends_json(mutual_friends):
- print(json.dumps([extract_output_fields(user) for user in mutual_friends], indent=3))
+ def __enter__(self):
+ return self
-def print_mutual_friends(mutual_friends, fmt):
- if fmt is OutputFormat.CSV:
- print_mutual_friends_csv(mutual_friends)
- elif fmt is OutputFormat.JSON:
- print_mutual_friends_json(mutual_friends)
- else:
- raise NotImplementedError('unsupported output format: ' + str(fmt))
+ def __exit__(self, *args):
+ pass
+
+ def write_mutual_friends(self, friend_list):
+ for user in mutual_friends:
+ user = extract_output_fields(user)
+ self._writer.writerow(user.values())
+
+class OutputWriterJSON:
+ def __init__(self, fd=sys.stdout):
+ self._fd = fd
+ self._array = []
+
+ def __enter__(self):
+ return self
+
+ def __exit__(self, *args):
+ self._fd.write(json.dumps(self._array, indent=3, ensure_ascii=False))
+
+ def write_mutual_friends(self, friend_list):
+ for user in friend_list:
+ self._array.append(extract_output_fields(user))
class OutputFormat(Enum):
CSV = 'csv'
@@ -46,6 +59,14 @@ class OutputFormat(Enum):
def __str__(self):
return self.value
+ def create_writer(self, fd=sys.stdout):
+ if self is OutputFormat.CSV:
+ return OutputWriterCSV(fd)
+ elif self is OutputFormat.JSON:
+ return OutputWriterJSON(fd)
+ else:
+ raise NotImplementedError('unsupported output format: ' + str(self))
+
if __name__ == '__main__':
import argparse
@@ -64,6 +85,9 @@ if __name__ == '__main__':
choices=tuple(fmt for fmt in OutputFormat),
default=OutputFormat.CSV,
help='specify output format')
+ parser.add_argument('--output', type=argparse.FileType('w', encoding='utf-8'),
+ default=sys.stdout,
+ help='set output file path (standard output by default)')
args = parser.parse_args()
@@ -72,4 +96,6 @@ if __name__ == '__main__':
friend_lists = map(lambda user: frozenset(query_friend_list(api, user)), users)
mutual_friends = frozenset.intersection(*friend_lists)
- print_mutual_friends(mutual_friends, args.output_format)
+
+ with args.output_format.create_writer(args.output) as writer:
+ writer.write_mutual_friends(mutual_friends)