refactor: remove CodecZlib and Dictionaries dependencies, use LibDeflate and Dict instead

Author: Beforerr

Project.toml

@@ -4,9 +4,7 @@ version = "0.1.9"
 authors = ["Beforerr <zzj956959688@gmail.com> and contributors"]
 
 [deps]
-CodecZlib = "944b1d66-785c-5afd-91f1-9de20f533193"
 Dates = "ade2ca70-3891-5945-98fb-dc099432e06a"
-Dictionaries = "85a47980-9c8c-11e8-2b9f-f7ca1fa99fb4"
 DiskArrays = "3c3547ce-8d99-4f5e-a174-61eb10b00ae3"
 LibDeflate = "9255714d-24a7-4b30-8ea3-d46a97f7e13b"
 Mmap = "a63ad114-7e13-5084-954f-fe012c677804"
@@ -20,10 +18,8 @@ CommonDataModel = "1fbeeb36-5f17-413c-809b-666fb144f157"
 CommonDataFormatCommonDataModelExt = ["CommonDataModel"]
 
 [compat]
-CodecZlib = "0.7"
 CommonDataModel = "0.4"
 Dates = "1"
-Dictionaries = "0.4"
 DiskArrays = "0.4"
 LibDeflate = "0.4.3"
 Mmap = "1"

src/CommonDataFormat.jl

@@ -2,11 +2,9 @@ module CommonDataFormat
 
 using Dates
 using Mmap
-using Dictionaries: Dictionary
 using ResumableFunctions
 using DiskArrays
 using Base.Threads
-using CodecZlib: GzipDecompressor, transcode
 using LibDeflate
 using LibDeflate: GzipDecompressResult
 using PrecompileTools
@@ -32,4 +30,4 @@ include("loading/attribute.jl")
 include("loading/variable.jl")
 include("precompile.jl")
 
-end
+end

src/decompress.jl

@@ -24,7 +24,13 @@ function decompress_bytes(data, compression::CompressionType; expected_bytes::Un
     compression == NoCompression && return data
     @assert compression in (GzipCompression, RLECompression)
     result = if compression == GzipCompression
-        transcode(GzipDecompressor, Vector{UInt8}(data))
+        decompressor = Decompressor()
+        input = convert(Vector{UInt8}, data)
+        max_size = isnothing(expected_bytes) ? length(input) * 10 : expected_bytes
+        output = Vector{UInt8}(undef, max_size)
+        decomp_result = gzip_decompress!(decompressor, output, input)
+        resize!(output, decomp_result.len)
+        output
     else
         isnothing(expected_bytes) && throw(ArgumentError("RLE decompression requires expected size"))
         _rle_decompress(data, expected_bytes)

src/loading/attribute.jl

@@ -31,7 +31,7 @@ function attrib(cdf::CDFDataset; predicate = is_global)
     aedrs = map(adrs) do adr
         load_attribute_entries(buffer, adr, RecordSizeType, cdf_encoding)
     end
-    return Dictionary(names, aedrs)
+    return Dict(zip(names, aedrs))
 end
 
 """