comparison mercurial/util.py @ 26267:eca468b8fae4

compression: use 'None' for no-compression

This seems more idiomatic and clearer. We still support both None and 'UN' for
now because no user are migrated.

26266:1e042e31bd0c

        return x
    def flush(self):
        return ""

compressors = {
    'UN': nocompress,
    # lambda to prevent early import
    'BZ': lambda: bz2.BZ2Compressor(),
    'GZ': lambda: zlib.compressobj(),
    }

def _makedecompressor(decompcls):
    def generator(f):
        d = decompcls()
        for chunk in filechunkiter(f):

    # Bzip2 stream start with BZ, but we stripped it.
    # we put it back for good measure.
    d.decompress('BZ')
    return d

decompressors = {'UN': lambda fh: fh,
                 'BZ': _makedecompressor(_bz2),
                 'GZ': _makedecompressor(lambda: zlib.decompressobj()),
                 }

# convenient shortcut
dst = debugstacktrace

26267:eca468b8fae4

        return x
    def flush(self):
        return ""

compressors = {
    None: nocompress,
    # lambda to prevent early import
    'BZ': lambda: bz2.BZ2Compressor(),
    'GZ': lambda: zlib.compressobj(),
    }
# also support the old form by courtesies
compressors['UN'] = compressors[None]

def _makedecompressor(decompcls):
    def generator(f):
        d = decompcls()
        for chunk in filechunkiter(f):

    # Bzip2 stream start with BZ, but we stripped it.
    # we put it back for good measure.
    d.decompress('BZ')
    return d

decompressors = {None: lambda fh: fh,
                 'BZ': _makedecompressor(_bz2),
                 'GZ': _makedecompressor(lambda: zlib.decompressobj()),
                 }
# also support the old form by courtesies
decompressors['UN'] = decompressors[None]

# convenient shortcut
dst = debugstacktrace