view mercurial/py3kcompat.py @ 24924:41cd8171e58f stable

archive: always use portable path component separators with subrepos

The previous behavior when archiving a subrepo 's' on Windows was to internally
name the file under it 's\file', due to the use of vfs.reljoin().  When printing
the file list from the archive on Windows or Linux, the file was named
's\\file'.  The archive extracted OK on Windows, but if the archive was brought
to a Linux system, it created a file named 's\file' instead of a directory 's'
containing 'file'.

*.zip format achives seemed not to have the problem, but this was definitely an
issue with *.tgz archives.

Largefiles actually got this right, but a test is added to keep this from
regressing.  The subrepo-deep-nested-change.t test was repurposed to archive to
a file, since there are several subsequent tests that archive to a directory.
The output change is losing the filesystem prefix '../archive_lf' and not
listing the directories 'sub1' and 'sub1/sub2'.

# py3kcompat.py - compatibility definitions for running hg in py3k
#
# Copyright 2010 Renato Cunha <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

import builtins

from numbers import Number

def bytesformatter(format, args):
    '''Custom implementation of a formatter for bytestrings.

    This function currently relies on the string formatter to do the
    formatting and always returns bytes objects.

    >>> bytesformatter(20, 10)
    0
    >>> bytesformatter('unicode %s, %s!', ('string', 'foo'))
    b'unicode string, foo!'
    >>> bytesformatter(b'test %s', 'me')
    b'test me'
    >>> bytesformatter('test %s', 'me')
    b'test me'
    >>> bytesformatter(b'test %s', b'me')
    b'test me'
    >>> bytesformatter('test %s', b'me')
    b'test me'
    >>> bytesformatter('test %d: %s', (1, b'result'))
    b'test 1: result'
    '''
    # The current implementation just converts from bytes to unicode, do
    # what's needed and then convert the results back to bytes.
    # Another alternative is to use the Python C API implementation.
    if isinstance(format, Number):
        # If the fixer erroneously passes a number remainder operation to
        # bytesformatter, we just return the correct operation
        return format % args
    if isinstance(format, bytes):
        format = format.decode('utf-8', 'surrogateescape')
    if isinstance(args, bytes):
        args = args.decode('utf-8', 'surrogateescape')
    if isinstance(args, tuple):
        newargs = []
        for arg in args:
            if isinstance(arg, bytes):
                arg = arg.decode('utf-8', 'surrogateescape')
            newargs.append(arg)
        args = tuple(newargs)
    ret = format % args
    return ret.encode('utf-8', 'surrogateescape')
builtins.bytesformatter = bytesformatter

origord = builtins.ord
def fakeord(char):
    if isinstance(char, int):
        return char
    return origord(char)
builtins.ord = fakeord

if __name__ == '__main__':
    import doctest
    doctest.testmod()