#!/usr/bin/env python3
# 파일명 : yyy_tail.py
# 파일위치: /data/_py/yyy_tail.py
# 내용
import os
import sys
import json
import html
import time
from collections import deque
def jprint(obj):
sys.stdout.write(json.dumps(obj, ensure_ascii=False))
def read_tail(path, n):
q = deque(maxlen=n)
with open(path, 'r', encoding='utf-8', errors='replace') as f:
for line in f:
q.append(line.rstrip('\n'))
return list(q)
def html_wrap(title, body):
return f"""
{html.escape(title)}
{html.escape(title)}
{body}
"""
def main():
try:
req = json.load(sys.stdin)
path = (req.get('path') or '').strip()
n = int(req.get('n', 80) or 80)
fmt = (req.get('fmt') or 'html').strip().lower()
grep = req.get('grep') or ''
icase = bool(req.get('icase', True))
if not path:
return jprint({'ok': False, 'error': 'path 누락'})
if not os.path.isfile(path):
return jprint({'ok': False, 'error': '파일 없음', 'path': path})
n = max(1, min(2000, n))
lines = read_tail(path, n)
if grep:
if icase:
g = grep.lower()
lines = [ln for ln in lines if g in ln.lower()]
else:
lines = [ln for ln in lines if grep in ln]
text = '\n'.join(lines)
title = f"tail {n} lines"
if grep:
title += f" | grep={grep}"
title += f" | {path}"
if fmt == 'text':
out = title + "\n" + ("-" * min(len(title), 120)) + "\n" + text + "\n"
else:
out = html_wrap(title, html.escape(text))
return jprint({
'ok': True,
'path': path,
'n': n,
'grep': grep,
'count': len(lines),
'output': out
})
except Exception as e:
return jprint({
'ok': False,
'error': str(e)
})
if __name__ == '__main__':
main()