mercurial/util.py

18766:64b5562550e2

    import re2
    _re2 = None
except ImportError:
    _re2 = False

def compilere(pat):
    '''Compile a regular expression, using re2 if possible

    For best performance, use only re2-compatible regexp features.'''
    global _re2
    if _re2 is None:
        try:
            re2.compile
            _re2 = True
        except ImportError:
            _re2 = False
    if _re2:
        try:
            return re2.compile(pat)
        except re2.error:
            pass
    return re.compile(pat)

_fspathcache = {}
def fspath(name, root):
    '''Get name in the case stored in the filesystem

18775:5b05ceb24a8d

    import re2
    _re2 = None
except ImportError:
    _re2 = False

def compilere(pat, flags=0):
    '''Compile a regular expression, using re2 if possible

    For best performance, use only re2-compatible regexp features. The
    only flags from the re module that are re2-compatible are
    IGNORECASE and MULTILINE.'''
    global _re2
    if _re2 is None:
        try:
            re2.compile
            _re2 = True
        except ImportError:
            _re2 = False
    if _re2 and (flags & ~(re.IGNORECASE | re.MULTILINE)) == 0:
        if flags & re.IGNORECASE:
            pat = '(?i)' + pat
        if flags & re.MULTILINE:
            pat = '(?m)' + pat
        try:
            return re2.compile(pat)
        except re2.error:
            pass
    return re.compile(pat, flags)

_fspathcache = {}
def fspath(name, root):
    '''Get name in the case stored in the filesystem