diff --git a/lib/exshape.ex b/lib/exshape.ex
index 488fd75..41c9d76 100644
--- a/lib/exshape.ex
+++ b/lib/exshape.ex
@@ -32,16 +32,9 @@ defmodule Exshape do
     end)
   end
 
-  defp unzip!(path, cwd, false), do: :zip.extract(to_charlist(path), cwd: cwd)
-  defp unzip!(path, cwd, true) do
-    {_, 0} = System.cmd("unzip", [path, "-d", to_string(cwd)])
-  end
-
-  def keep_file?({:zip_file, charlist, _, _, _, _}) do
-    filename = :binary.list_to_bin(charlist)
+  def keep_file?(filename) do
     not String.starts_with?(filename, "__MACOSX") and not String.starts_with?(filename, ".")
   end
-  def keep_file?(_), do: false
 
   defmodule Filesystem do
     @moduledoc """
@@ -91,17 +84,17 @@ defmodule Exshape do
   @spec from_zip(String.t) :: [layer]
   def from_zip(path, opts \\ []) do
 
-    cwd = Keyword.get(opts, :working_dir, '/tmp/exshape_#{random_string()}')
+    cwd = Keyword.get(opts, :working_dir, "/tmp/exshape_#{random_string()}")
     size = Keyword.get(opts, :read_size, 1024 * 1024)
 
-    with {:ok, files} <- :zip.table(String.to_charlist(path)) do
+    with {:ok, files} <- Shp.unzip_table(path) do
       from_filesystem(
         %Filesystem{
           list: fn -> files end,
           stream: fn file ->
             if !File.exists?(Path.join(cwd, file)) do
               File.mkdir_p!(cwd)
-              unzip!(path, cwd, Keyword.get(opts, :unzip_shell, true))
+              {:ok, _} = Shp.unzip_files(path, cwd)
             end
             open_file(Path.join(cwd, file), size)
           end
@@ -114,7 +107,6 @@ defmodule Exshape do
   def from_filesystem(fs, opts \\ []) do
     filenames = fs.list.()
     |> Enum.filter(&keep_file?/1)
-    |> Enum.map(fn {:zip_file, filename, _, _, _, _} -> filename end)
 
     filenames
     |> Enum.group_by(&Path.rootname/1)
@@ -127,9 +119,9 @@ defmodule Exshape do
       if !is_nil(shp) && !is_nil(dbf) do
         [{
           root,
-          List.to_string(shp),
-          List.to_string(dbf),
-          prj && List.to_string(prj)
+          shp,
+          dbf,
+          prj
           }]
       else
         []
diff --git a/lib/exshape/shp.ex b/lib/exshape/shp.ex
index 4f6d9ea..6ca898f 100644
--- a/lib/exshape/shp.ex
+++ b/lib/exshape/shp.ex
@@ -245,6 +245,8 @@ defmodule Exshape.Shp do
     r
   end
   defp native_nest_polygon_impl(_p), do: throw :nif_not_loaded
+  def unzip_table(_p), do: throw :nif_not_loaded
+  def unzip_files(_p, _f), do: throw :nif_not_loaded
 
   def beam_nest_polygon(p) do
     {polys, holes} = unflatten_parts(p) |> Enum.split_with(&is_clockwise?/1)
diff --git a/native/exshape_shape/Cargo.lock b/native/exshape_shape/Cargo.lock
index 43ef81d..1bce192 100644
--- a/native/exshape_shape/Cargo.lock
+++ b/native/exshape_shape/Cargo.lock
@@ -2,12 +2,148 @@
 # It is not intended for manual editing.
 version = 4
 
+[[package]]
+name = "adler2"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "512761e0bb2578dd7380c6baaa0f4ce03e84f95e960231d1dec8bf4d7d6e2627"
+
+[[package]]
+name = "aes"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b169f7a6d4742236a0a00c541b845991d0ac43e546831af1249753ab4c3aa3a0"
+dependencies = [
+ "cfg-if",
+ "cipher",
+ "cpufeatures",
+]
+
+[[package]]
+name = "arbitrary"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dde20b3d026af13f561bdd0f15edf01fc734f0dafcedbaf42bba506a9517f223"
+dependencies = [
+ "derive_arbitrary",
+]
+
+[[package]]
+name = "bitflags"
+version = "2.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b8e56985ec62d17e9c1001dc89c88ecd7dc08e47eba5ec7c29c7b5eeecde967"
+
+[[package]]
+name = "block-buffer"
+version = "0.10.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3078c7629b62d3f0439517fa394996acacc5cbc91c5a20d8c658e77abd503a71"
+dependencies = [
+ "generic-array",
+]
+
+[[package]]
+name = "bumpalo"
+version = "3.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1628fb46dfa0b37568d12e5edd512553eccf6a22a78e8bde00bb4aed84d5bdbf"
+
+[[package]]
+name = "bzip2"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49ecfb22d906f800d4fe833b6282cf4dc1c298f5057ca0b5445e5c209735ca47"
+dependencies = [
+ "bzip2-sys",
+]
+
+[[package]]
+name = "bzip2-sys"
+version = "0.1.13+1.0.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "225bff33b2141874fe80d71e07d6eec4f85c5c216453dd96388240f96e1acc14"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
+
+[[package]]
+name = "cc"
+version = "1.2.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f4ac86a9e5bc1e2b3449ab9d7d3a6a405e3d1bb28d7b9be8614f55846ae3766"
+dependencies = [
+ "jobserver",
+ "libc",
+ "shlex",
+]
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
+[[package]]
+name = "cipher"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "773f3b9af64447d2ce9850330c473515014aa235e6a783b02db81ff39e4a3dad"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
+[[package]]
+name = "constant_time_eq"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c74b8349d32d297c9134b8c88677813a227df8f779daa29bfc29c183fe3dca6"
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crc32fast"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a97769d94ddab943e4510d138150169a2758b5ef3eb191a9ee688de3e23ef7b3"
+dependencies = [
+ "cfg-if",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "deflate64"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da692b8d1080ea3045efaab14434d40468c3d8657e42abddfffca87b428f4c1b"
+
+[[package]]
+name = "deranged"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9c9e6a11ca8224451684bc0d7d5a7adbf8f2fd6887261a1cfc3c0432f9d4068e"
+dependencies = [
+ "powerfmt",
+]
+
 [[package]]
 name = "derivative"
 version = "2.2.0"
@@ -19,12 +155,40 @@ dependencies = [
  "syn 1.0.109",
 ]
 
+[[package]]
+name = "derive_arbitrary"
+version = "1.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "30542c1ad912e0e3d22a1935c290e12e8a29d704a420177a31faad4a601a0800"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+]
+
+[[package]]
+name = "digest"
+version = "0.10.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ed9a281f7bc9b7576e61468ba615a66a5c8cfdff42420a70aa82701a3b1e292"
+dependencies = [
+ "block-buffer",
+ "crypto-common",
+ "subtle",
+]
+
 [[package]]
 name = "either"
 version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
+[[package]]
+name = "equivalent"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
+
 [[package]]
 name = "exshape_shape"
 version = "0.1.0"
@@ -33,6 +197,18 @@ dependencies = [
  "float_extras",
  "itertools",
  "rustler",
+ "zip",
+]
+
+[[package]]
+name = "flate2"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7ced92e76e966ca2fd84c8f7aa01a4aea65b0eb6648d72f7c8f3e2764a67fece"
+dependencies = [
+ "crc32fast",
+ "libz-rs-sys",
+ "miniz_oxide",
 ]
 
 [[package]]
@@ -44,12 +220,70 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "generic-array"
+version = "0.14.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "26145e563e54f2cadc477553f1ec5ee650b00862f0a58bcd12cbdc5f0ea2d2f4"
+dependencies = [
+ "cfg-if",
+ "js-sys",
+ "libc",
+ "r-efi",
+ "wasi",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "hashbrown"
+version = "0.15.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "84b26c544d002229e640969970a2e74021aadf6e2f96372b9c58eff97de08eb3"
+
 [[package]]
 name = "heck"
 version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
+[[package]]
+name = "hmac"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c49c37c09c17a53d937dfbb742eb3a961d65a994e6bcdcf37e7399d0cc8ab5e"
+dependencies = [
+ "digest",
+]
+
+[[package]]
+name = "indexmap"
+version = "2.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cea70ddb795996207ad57735b50c5982d8844f38ba9ee5f1aedcfb708a2aa11e"
+dependencies = [
+ "equivalent",
+ "hashbrown",
+]
+
+[[package]]
+name = "inout"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "879f10e63c20629ecabbb64a8010319738c66a5cd0c29b02d63d272b03751d01"
+dependencies = [
+ "generic-array",
+]
+
 [[package]]
 name = "inventory"
 version = "0.3.15"
@@ -65,6 +299,25 @@ dependencies = [
  "either",
 ]
 
+[[package]]
+name = "jobserver"
+version = "0.1.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "48d1dbcbbeb6a7fec7e059840aa538bd62aaccf972c7346c4d9d2059312853d0"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "js-sys"
+version = "0.3.77"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cfaf33c695fc6e08064efbc1f72ec937429614f25eef83af942d0e227c3a28f"
+dependencies = [
+ "once_cell",
+ "wasm-bindgen",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.160"
@@ -81,6 +334,90 @@ dependencies = [
  "windows-targets",
 ]
 
+[[package]]
+name = "liblzma"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "66352d7a8ac12d4877b6e6ea5a9b7650ee094257dc40889955bea5bc5b08c1d0"
+dependencies = [
+ "liblzma-sys",
+]
+
+[[package]]
+name = "liblzma-sys"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5839bad90c3cc2e0b8c4ed8296b80e86040240f81d46b9c0e9bc8dd51ddd3af1"
+dependencies = [
+ "cc",
+ "libc",
+ "pkg-config",
+]
+
+[[package]]
+name = "libz-rs-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6489ca9bd760fe9642d7644e827b0c9add07df89857b0416ee15c1cc1a3b8c5a"
+dependencies = [
+ "zlib-rs",
+]
+
+[[package]]
+name = "log"
+version = "0.4.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13dc2df351e3202783a1fe0d44375f7295ffb4049267b0f3018346dc122a1d94"
+
+[[package]]
+name = "memchr"
+version = "2.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78ca9ab1a0babb1e7d5695e3530886289c18cf2f87ec19a575a0abdce112e3a3"
+
+[[package]]
+name = "miniz_oxide"
+version = "0.8.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3be647b768db090acb35d5ec5db2b0e1f1de11133ca123b9eacf5137868f892a"
+dependencies = [
+ "adler2",
+]
+
+[[package]]
+name = "num-conv"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "51d515d32fb182ee37cda2ccdcb92950d6a3c2893aa280e540671c2cd0f3b1d9"
+
+[[package]]
+name = "once_cell"
+version = "1.21.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "42f5e15c9953c5e4ccceeb2e7382a716482c34515315f7b03532b8b4e8393d2d"
+
+[[package]]
+name = "pbkdf2"
+version = "0.12.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8ed6a7761f76e3b9f92dfb0a60a6a6477c61024b775147ff0973a02653abaf2"
+dependencies = [
+ "digest",
+ "hmac",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.32"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7edddbd0b52d732b21ad9a5fab5c704c14cd949e5e9a1ec5929a24fded1b904c"
+
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
 [[package]]
 name = "proc-macro2"
 version = "1.0.92"
@@ -99,6 +436,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74765f6d916ee2faa39bc8e68e4f3ed8949b48cccdac59983d287a7cb71ce9c5"
+
 [[package]]
 name = "regex-lite"
 version = "0.1.6"
@@ -130,6 +473,55 @@ dependencies = [
  "syn 2.0.90",
 ]
 
+[[package]]
+name = "serde"
+version = "1.0.219"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5f0e2c6ed6606019b4e29e69dbaba95b11854410e5347d525002456dbbb786b6"
+dependencies = [
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_derive"
+version = "1.0.219"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5b0276cf7f2c73365f7157c8123c21cd9a50fbbd844757af28ca1f5925fc2a00"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+]
+
+[[package]]
+name = "sha1"
+version = "0.10.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
+[[package]]
+name = "simd-adler32"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d66dc143e6b11c1eddc06d5c423cfc97062865baf299914ab64caa38182078fe"
+
+[[package]]
+name = "subtle"
+version = "2.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
+
 [[package]]
 name = "syn"
 version = "1.0.109"
@@ -152,12 +544,109 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8a7619e19bc266e0f9c5e6686659d394bc57973859340060a69221e57dbc0c40"
+dependencies = [
+ "deranged",
+ "num-conv",
+ "powerfmt",
+ "serde",
+ "time-core",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9e9a38711f559d9e3ce1cdb06dd7c5b8ea546bc90052da6d06bb76da74bb07c"
+
+[[package]]
+name = "typenum"
+version = "1.18.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1dccffe3ce07af9386bfd29e80c0ab1a8205a2fc34e4bcd40364df902cfa8f3f"
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "adb9e6ca4f869e1180728b7950e35922a7fc6397f7b641499e8f3ef06e50dc83"
 
+[[package]]
+name = "version_check"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
+
+[[package]]
+name = "wasi"
+version = "0.14.2+wasi-0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9683f9a5a998d873c0d21fcbe3c083009670149a8fab228644b8bd36b2c48cb3"
+dependencies = [
+ "wit-bindgen-rt",
+]
+
+[[package]]
+name = "wasm-bindgen"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1edc8929d7499fc4e8f0be2262a241556cfc54a0bea223790e71446f2aab1ef5"
+dependencies = [
+ "cfg-if",
+ "once_cell",
+ "wasm-bindgen-macro",
+]
+
+[[package]]
+name = "wasm-bindgen-backend"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2f0a0651a5c2bc21487bde11ee802ccaf4c51935d0d3d42a6101f98161700bc6"
+dependencies = [
+ "bumpalo",
+ "log",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-macro"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7fe63fc6d09ed3792bd0897b314f53de8e16568c2b3f7982f468c0bf9bd0b407"
+dependencies = [
+ "quote",
+ "wasm-bindgen-macro-support",
+]
+
+[[package]]
+name = "wasm-bindgen-macro-support"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8ae87ea40c9f689fc23f209965b6fb8a99ad69aeeb0231408be24920604395de"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+ "wasm-bindgen-backend",
+ "wasm-bindgen-shared",
+]
+
+[[package]]
+name = "wasm-bindgen-shared"
+version = "0.2.100"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1a05d73b933a847d6cccdda8f838a22ff101ad9bf93e33684f39c1f5f0eece3d"
+dependencies = [
+ "unicode-ident",
+]
+
 [[package]]
 name = "windows-targets"
 version = "0.52.6"
@@ -221,3 +710,104 @@ name = "windows_x86_64_msvc"
 version = "0.52.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
+
+[[package]]
+name = "wit-bindgen-rt"
+version = "0.39.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f42320e61fe2cfd34354ecb597f86f413484a798ba44a8ca1165c58d42da6c1"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ced3678a2879b30306d323f4542626697a464a97c0a07c9aebf7ebca65cd4dde"
+dependencies = [
+ "zeroize_derive",
+]
+
+[[package]]
+name = "zeroize_derive"
+version = "1.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.90",
+]
+
+[[package]]
+name = "zip"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "153a6fff49d264c4babdcfa6b4d534747f520e56e8f0f384f3b808c4b64cc1fd"
+dependencies = [
+ "aes",
+ "arbitrary",
+ "bzip2",
+ "constant_time_eq",
+ "crc32fast",
+ "deflate64",
+ "flate2",
+ "getrandom",
+ "hmac",
+ "indexmap",
+ "liblzma",
+ "memchr",
+ "pbkdf2",
+ "sha1",
+ "time",
+ "zeroize",
+ "zopfli",
+ "zstd",
+]
+
+[[package]]
+name = "zlib-rs"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "868b928d7949e09af2f6086dfc1e01936064cc7a819253bce650d4e2a2d63ba8"
+
+[[package]]
+name = "zopfli"
+version = "0.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edfc5ee405f504cd4984ecc6f14d02d55cfda60fa4b689434ef4102aae150cd7"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "log",
+ "simd-adler32",
+]
+
+[[package]]
+name = "zstd"
+version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f49c4d5f0abb602a93fb8736af2a4f4dd9512e36f7f570d66e65ff867ed3b9d"
+dependencies = [
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.15+zstd.1.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eb81183ddd97d0c74cedf1d50d85c8d08c1b8b68ee863bdee9e706eedba1a237"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
diff --git a/native/exshape_shape/Cargo.toml b/native/exshape_shape/Cargo.toml
index eff2bfc..0ae3655 100644
--- a/native/exshape_shape/Cargo.toml
+++ b/native/exshape_shape/Cargo.toml
@@ -14,3 +14,4 @@ rustler = "0.36.1"
 itertools = "0.14.0"
 derivative = "2.2.0"
 float_extras = "0.1.6"
+zip = "4.0.0"
diff --git a/native/exshape_shape/src/lib.rs b/native/exshape_shape/src/lib.rs
index 8e4b0a1..3255e05 100644
--- a/native/exshape_shape/src/lib.rs
+++ b/native/exshape_shape/src/lib.rs
@@ -13,6 +13,7 @@ mod point;
 mod lineseg;
 mod ring;
 mod poly;
+mod zip;
 
 use ring::{ElixirRing, Ring};
 use poly::{ElixirPoly, Poly};
diff --git a/native/exshape_shape/src/zip.rs b/native/exshape_shape/src/zip.rs
new file mode 100644
index 0000000..10e8e5b
--- /dev/null
+++ b/native/exshape_shape/src/zip.rs
@@ -0,0 +1,46 @@
+use std::{fs::{self, File, OpenOptions}, io, path::Path};
+
+use rustler::NifResult;
+use zip::ZipArchive;
+
+use crate::Yes;
+
+fn good_filename(s: &str) -> bool {
+    !s.starts_with('/') &&  // exclude any absolute paths
+        !s.ends_with('/') &&  // exclude any directories
+        !s.starts_with("../") && // exclude any files that say "I belong in the parent dir"
+        !s.contains("/../") // exclude any files that try to traverse upward
+}
+
+#[rustler::nif(schedule = "DirtyCpu")]
+fn unzip_table(path: &str) -> Result<Vec<String>, &'static str> {
+    let r = File::open(path).map_err(|_| "Unable to open zip file")?;
+    let files = ZipArchive::new(r).map_err(|_| "Unable to read zip file")?
+        .file_names()
+        .filter(|s| good_filename(s))
+        .map(str::to_owned)
+        .collect();
+    Ok(files)
+}
+
+#[rustler::nif(schedule = "DirtyCpu")]
+fn unzip_files(zip_filename: &str, target_dir: &str) -> Result<(), &'static str> {
+    let target_dir = Path::new(target_dir);
+    let r = File::open(zip_filename).map_err(|_| "Unable to open zip file")?;
+    let mut zip = ZipArchive::new(r).map_err(|_| "Unable to read zip file")?;
+    for i in 0..zip.len() {
+        let mut file = zip.by_index(i).unwrap();
+        let filename = file.name();
+        if !good_filename(filename) {
+            continue;
+        }
+        let target = target_dir.join(filename);
+        if let Some(p) = target.parent() {
+            fs::create_dir_all(p).map_err(|_| "Unable to create temp dir")?;
+        }
+        let mut outfile = OpenOptions::new().write(true).create_new(true).open(target).map_err(|_| "Unable to create temp file")?;
+        io::copy(&mut file, &mut outfile).map_err(|_| "Unable to copy data")?;
+        outfile.sync_all().map_err(|_| "Unable to finish write")?;
+    }
+    Ok(())
+}
diff --git a/test/exshape_test.exs b/test/exshape_test.exs
index 3491214..4d1af9f 100644
--- a/test/exshape_test.exs
+++ b/test/exshape_test.exs
@@ -115,28 +115,4 @@ defmodule ExshapeTest do
     [_, {shape, _}] = Enum.into(stream, [])
     assert (shape.points |> List.flatten |> length) == 174045
   end
-
-  test "native and beam produce the same results" do
-    ["archive", "chicago_zoning", "co-parcels", "hoods", "howard-beach", "row_181", "seattle_basketball_points", "speed_enforcement", "zillow"]
-    |> Enum.each(fn path ->
-      [{_, _, beam_stream}] = zip(path) |> Exshape.from_zip(native: false)
-      beam = Enum.into(beam_stream, [])
-      [{_, _, native_stream}] = zip(path) |> Exshape.from_zip(native: true)
-      native = Enum.into(native_stream, [])
-      assert beam == native
-    end)
-
-    ["multipatch", "multipointm", "multipoint", "multipointz", "pointm", "point", "pointz", "polygonm", "polygon", "polygons", "polygonz", "polylinem", "polyline", "polylinez", "Neighborhoods/neighborhoods_orleans"]
-    |> Enum.each(fn path ->
-      beam = shp(path)
-      |> File.stream!([], 2048)
-      |> Exshape.Shp.read(native: false)
-      |> Enum.into([])
-      native = shp(path)
-      |> File.stream!([], 2048)
-      |> Exshape.Shp.read(native: true)
-      |> Enum.into([])
-      assert beam == native
-    end)
-  end
 end