comparison mercurial/match.py @ 38475:67dc32d4e790

cleanup: migrate from re.escape to stringutil.reescape

This has consistent behavior on Python 2.7, 3.6, and 3.7 and has the
benefit of probably being a little faster. Test output changes are
largely because / used to be pointlessly escaped.

Differential Revision: https://phab.mercurial-scm.org/D3842

38474:96f65bdf0bf4

    >>> bprint(_globre(br'**'))
    .*
    >>> bprint(_globre(br'**/a'))
    (?:.*/)?a
    >>> bprint(_globre(br'a/**/b'))
    a\/(?:.*/)?b
    >>> bprint(_globre(br'[a*?!^][^b][!c]'))
    [a*?!^][\^b][^c]
    >>> bprint(_globre(br'{a,b}'))
    (?:a|b)
    >>> bprint(_globre(br'.\*\?'))
    \.\*\?
    '''
    i, n = 0, len(pat)
    res = ''
    group = 0
    escape = util.re.escape
    def peek():
        return i < n and pat[i:i + 1]
    while i < n:
        c = pat[i:i + 1]
        i += 1

    if kind == 're':
        return pat
    if kind in ('path', 'relpath'):
        if pat == '.':
            return ''
        return util.re.escape(pat) + '(?:/|$)'
    if kind == 'rootfilesin':
        if pat == '.':
            escaped = ''
        else:
            # Pattern is a directory name.
            escaped = util.re.escape(pat) + '/'
        # Anything after the pattern must be a non-directory.
        return escaped + '[^/]+$'
    if kind == 'relglob':
        return '(?:|.*/)' + _globre(pat) + globsuffix
    if kind == 'relre':

38475:67dc32d4e790

    >>> bprint(_globre(br'**'))
    .*
    >>> bprint(_globre(br'**/a'))
    (?:.*/)?a
    >>> bprint(_globre(br'a/**/b'))
    a/(?:.*/)?b
    >>> bprint(_globre(br'[a*?!^][^b][!c]'))
    [a*?!^][\^b][^c]
    >>> bprint(_globre(br'{a,b}'))
    (?:a|b)
    >>> bprint(_globre(br'.\*\?'))
    \.\*\?
    '''
    i, n = 0, len(pat)
    res = ''
    group = 0
    escape = util.stringutil.reescape
    def peek():
        return i < n and pat[i:i + 1]
    while i < n:
        c = pat[i:i + 1]
        i += 1

    if kind == 're':
        return pat
    if kind in ('path', 'relpath'):
        if pat == '.':
            return ''
        return util.stringutil.reescape(pat) + '(?:/|$)'
    if kind == 'rootfilesin':
        if pat == '.':
            escaped = ''
        else:
            # Pattern is a directory name.
            escaped = util.stringutil.reescape(pat) + '/'
        # Anything after the pattern must be a non-directory.
        return escaped + '[^/]+$'
    if kind == 'relglob':
        return '(?:|.*/)' + _globre(pat) + globsuffix
    if kind == 'relre':