Mercurial > hg
view contrib/check-py3-compat.py @ 40589:054d0fcba2c4
commandserver: add experimental option to use separate message channel
This is loosely based on the idea of the TortoiseHg's pipeui extension,
which attaches ui.label to message text so the command-server client can
capture prompt text, for example.
https://bitbucket.org/tortoisehg/thg/src/4.7.2/tortoisehg/util/pipeui.py
I was thinking that this functionality could be generalized to templating,
but changed mind as doing template stuff would be unnecessarily complex.
It's merely a status message, a simple serialization option should suffice.
Since this slightly changes the command-server protocol, it's gated by a
config knob. If the config is enabled, and if it's supported by the server,
"message-encoding: <name>" is advertised so the client can stop parsing
'o'/'e' channel data and read encoded messages from the 'm' channel. As we
might add new message encodings in future releases, client can specify a list
of encoding names in preferred order.
This patch includes 'cbor' encoding as example. Perhaps, 'json' should be
supported as well.
author | Yuya Nishihara <yuya@tcha.org> |
---|---|
date | Sun, 18 Jan 2015 18:49:59 +0900 |
parents | 778dc37ce683 |
children | 01417ca7f2e2 |
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#!/usr/bin/env python # # check-py3-compat - check Python 3 compatibility of Mercurial files # # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import, print_function import ast import importlib import os import sys import traceback def check_compat_py2(f): """Check Python 3 compatibility for a file with Python 2""" with open(f, 'rb') as fh: content = fh.read() root = ast.parse(content) # Ignore empty files. if not root.body: return futures = set() haveprint = False for node in ast.walk(root): if isinstance(node, ast.ImportFrom): if node.module == '__future__': futures |= set(n.name for n in node.names) elif isinstance(node, ast.Print): haveprint = True if 'absolute_import' not in futures: print('%s not using absolute_import' % f) if haveprint and 'print_function' not in futures: print('%s requires print_function' % f) def check_compat_py3(f): """Check Python 3 compatibility of a file with Python 3.""" with open(f, 'rb') as fh: content = fh.read() try: ast.parse(content) except SyntaxError as e: print('%s: invalid syntax: %s' % (f, e)) return # Try to import the module. # For now we only support modules in packages because figuring out module # paths for things not in a package can be confusing. if (f.startswith(('hgdemandimport/', 'hgext/', 'mercurial/')) and not f.endswith('__init__.py')): assert f.endswith('.py') name = f.replace('/', '.')[:-3] try: importlib.import_module(name) except Exception as e: exc_type, exc_value, tb = sys.exc_info() # We walk the stack and ignore frames from our custom importer, # import mechanisms, and stdlib modules. This kinda/sorta # emulates CPython behavior in import.c while also attempting # to pin blame on a Mercurial file. for frame in reversed(traceback.extract_tb(tb)): if frame.name == '_call_with_frames_removed': continue if 'importlib' in frame.filename: continue if 'mercurial/__init__.py' in frame.filename: continue if frame.filename.startswith(sys.prefix): continue break if frame.filename: filename = os.path.basename(frame.filename) print('%s: error importing: <%s> %s (error at %s:%d)' % ( f, type(e).__name__, e, filename, frame.lineno)) else: print('%s: error importing module: <%s> %s (line %d)' % ( f, type(e).__name__, e, frame.lineno)) if __name__ == '__main__': if sys.version_info[0] == 2: fn = check_compat_py2 else: fn = check_compat_py3 for f in sys.argv[1:]: fn(f) sys.exit(0)