Maybe support hdf4

docs/source/reference.rst

@@ -10,6 +10,7 @@ File format backends
  kerchunk.fits.process_file
  kerchunk.tiff.tiff_to_zarr
  kerchunk.netCDF3.NetCDF3ToZarr
+ kerchunk.hdf4.HDF4ToZarr
 
 .. autoclass:: kerchunk.hdf.SingleHdf5ToZarr
  :members:
@@ -24,6 +25,9 @@ File format backends
 .. autoclass:: kerchunk.netCDF3.NetCDF3ToZarr
  :members: __init__, translate
 
+.. autoclass:: kerchunk.hdf4.HDF4ToZarr
+ :members: __init__, translate
+
 Codecs
 ------
 
@@ -50,6 +54,9 @@ Codecs
 .. autoclass:: kerchunk.codecs.RecordArrayMember
  :members: __init__
 
+.. autoclass:: kerchunk.codecs.ZlibCodec
+ :members: __init__
+
 Combining
 ---------
 

kerchunk/codecs.py

@@ -5,6 +5,7 @@
 from numcodecs.abc import Codec
 import numpy as np
 import threading
+import zlib
 
 
 class FillStringsCodec(Codec):
@@ -238,3 +239,19 @@ def decode(self, buf, out=None):
 
  def encode(self, buf):
  raise NotImplementedError
+
+
+class ZlibCodec(Codec):
+ codec_id = "zlib"
+
+ def __init__(self):
+ ...
+
+ def decode(self, data, out=None):
+ if out:
+ out[:] = zlib.decompress(data)
+ return out
+ return zlib.decompress(data)
+
+ def encode(self, buf):
+ return zlib.compress(buf)