#!/opt/venv/bin/python3
# /data/www/_py/yyy_diff.py -> yyy_diff.py
# 사용처 /var/www/html/y/yyy_diff_simple.php
import argparse, html, os, sys
import difflib
MAX_READ = 2 * 1024 * 1024 # 2MB
def safe_read(path, max_bytes=MAX_READ):
try:
size = os.path.getsize(path)
with open(path, 'rb') as f:
data = f.read(min(size, max_bytes))
return data.decode('utf-8', errors='replace').replace('\r\n', '\n')
except Exception as e:
return f"[[ 읽기 실패: {e} ]]"
def build_unified(left_txt, right_txt, left_label, right_label):
l = left_txt.split('\n')
r = right_txt.split('\n')
diff = difflib.unified_diff(l, r, fromfile=left_label, tofile=right_label, lineterm='')
return '\n'.join(diff)
def html_wrap(body,l, r):
return f"""
Diff 비교
{body}
"""
def colorize_unified(diff_text):
out = []
for line in diff_text.split('\n'):
esc = html.escape(line)
if line.startswith('+++') or line.startswith('---') or line.startswith('@@'):
out.append(f'')
elif line.startswith('+'):
out.append(f'')
elif line.startswith('-'):
out.append(f'')
else:
out.append(f'')
return '\n'.join(out)
def main():
p = argparse.ArgumentParser()
p.add_argument('--left', required=True)
p.add_argument('--right', required=True)
p.add_argument('--fmt', default='html', choices=['html','text'])
args = p.parse_args()
left_txt = safe_read(args.left)
right_txt = safe_read(args.right)
uni = build_unified(left_txt, right_txt, args.left, args.right)
if args.fmt == 'text':
sys.stdout.write(uni if uni.strip() else "(파일 내용 동일)\n")
return
body = colorize_unified(uni if uni.strip() else "(파일 내용 동일)")
sys.stdout.write(html_wrap(body,args.left, args.right))
if __name__ == '__main__':
main()