feat: port node:zlib to rust (#18291)

1 files changed, 71 insertions, 0 deletions

diff --git a/ext/node/zlib/mode.rs b/ext/node/zlib/mode.rs
new file mode 100644
index 000000000..ef89805ba
--- /dev/null
+++ b/ext/node/zlib/mode.rs
@@ -0,0 +1,71 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+
+use libz_sys as sys;
+
+#[derive(Debug)]
+pub enum Error {
+  BadArgument,
+}
+
+impl std::fmt::Display for Error {
+  fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+    match self {
+      Error::BadArgument => write!(f, "bad argument"),
+    }
+  }
+}
+
+impl std::error::Error for Error {}
+
+macro_rules! repr_i32 {
+    ($(#[$meta:meta])* $vis:vis enum $name:ident {
+      $($(#[$vmeta:meta])* $vname:ident $(= $val:expr)?,)*
+    }) => {
+      $(#[$meta])*
+      $vis enum $name {
+        $($(#[$vmeta])* $vname $(= $val)?,)*
+      }
+
+      impl core::convert::TryFrom<i32> for $name {
+        type Error = Error;
+
+        fn try_from(v: i32) -> Result<Self, Self::Error> {
+          match v {
+            $(x if x == $name::$vname as i32 => Ok($name::$vname),)*
+            _ => Err(Error::BadArgument),
+          }
+        }
+      }
+    }
+  }
+
+repr_i32! {
+  #[repr(i32)]
+  #[derive(Clone, Copy, Debug, PartialEq, Default)]
+  pub enum Mode {
+    #[default]
+    None,
+    Deflate,
+    Inflate,
+    Gzip,
+    Gunzip,
+    DeflateRaw,
+    InflateRaw,
+    Unzip,
+  }
+}
+
+repr_i32! {
+  #[repr(i32)]
+  #[derive(Clone, Copy, Debug, PartialEq, Default)]
+  pub enum Flush {
+    #[default]
+    None = sys::Z_NO_FLUSH,
+    Partial = sys::Z_PARTIAL_FLUSH,
+    Sync = sys::Z_SYNC_FLUSH,
+    Full = sys::Z_FULL_FLUSH,
+    Finish = sys::Z_FINISH,
+    Block = sys::Z_BLOCK,
+    Trees = sys::Z_TREES,
+  }
+}