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Fix other chunk sizing

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Watchful1 2023-01-30 17:05:22 -08:00
parent 4e8d6c9b6b
commit ba6da35b37
2 changed files with 16 additions and 3 deletions
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15
personal/utils.py
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@ -19,12 +19,25 @@ def read_obj_zst(file_name):
reader.close()
def read_and_decode(reader, chunk_size, max_window_size, previous_chunk=None, bytes_read=0):
chunk = reader.read(chunk_size)
bytes_read += chunk_size
if previous_chunk is not None:
chunk = previous_chunk + chunk
try:
return chunk.decode()
except UnicodeDecodeError:
if bytes_read > max_window_size:
raise UnicodeError(f"Unable to decode frame after reading {bytes_read:,} bytes")
return read_and_decode(reader, chunk_size, max_window_size, chunk, bytes_read)
def read_obj_zst_meta(file_name):
with open(file_name, 'rb') as file_handle:
buffer = ''
reader = zstandard.ZstdDecompressor(max_window_size=2**31).stream_reader(file_handle)
while True:
chunk = reader.read(2**27).decode()
chunk = read_and_decode(reader, 2**27, (2**29) * 2)
if not chunk:
break
lines = (buffer + chunk).split("\n")