refactor: integrate algorithms-c with rust crate

crates/algorithms/build.rs

@@ -7,6 +7,14 @@ fn main() {
     if !status.success() {
         panic!("make returned an error")
     }
-    println!("cargo::rerun-if-changed=./algorithms-c/src/");
+    let cwd = std::env::current_dir().unwrap().display().to_string();
+    let libpath_s = format!("{cwd}/algorithms-c/build/artifacts/release/libalgorithms.a");
+    let libpath = std::path::Path::new(&libpath_s);
+    assert!(libpath.exists());
     println!("cargo::rustc-link-lib=algorithms");
+    println!("cargo::rerun-if-changed={cwd}/algorithms-c/src/");
+    println!(
+        "cargo::rustc-link-search={}",
+        libpath.parent().unwrap().display()
+    );
 }

crates/algorithms/src/crc/crc_32.rs

@@ -2,7 +2,7 @@
 //!
 //! [Link](https://datatracker.ietf.org/doc/html/rfc1662#appendix-C.3)
 
-use crate::Crc;
+use super::Crc;
 
 /// Lookup table from RFC1662 C.3
 pub const CRC32_TABLE: [u32; 256] = [
@@ -69,7 +69,7 @@ impl Crc for Crc32 {
 
 #[cfg(test)]
 mod tests {
-    use crate::CHECK_DATA;
+    use crate::crc::CHECK_DATA;
 
     use super::*;
 

crates/algorithms/src/crc/ffi/crc32.rs

@@ -1,6 +1,6 @@
 use core::ffi::c_void;
 
-use crate::{Crc, ffi::ref_to_voidptr};
+use crate::{crc::Crc, ffi::ref_to_voidptr};
 
 pub type ChecksumCrc32 = u32; // uint32_t in C
 
@@ -44,7 +44,7 @@ impl Crc for Crc32 {
 
 #[cfg(test)]
 mod tests {
-    use crate::CHECK_DATA;
+    use crate::crc::CHECK_DATA;
 
     use super::*;
 

crates/algorithms/src/crc/ffi/mod.rs

@@ -0,0 +1,3 @@
+mod crc32;
+
+pub use crc32::*;

crates/algorithms/src/crc/mod.rs

@@ -0,0 +1,22 @@
+/// CRCs from this module are implemented in C instead of Rust
+pub mod ffi;
+
+mod crc_32;
+pub use crc_32::*;
+
+pub const CHECK_DATA: [u8; 9] = *b"123456789";
+
+pub trait Crc: Sized {
+    type Input: ?Sized;
+    type Checksum: Eq + Default + Copy;
+
+    fn new() -> Self;
+    fn process(&mut self, data: &Self::Input);
+    fn shift_reg(&mut self) -> &mut Self::Checksum;
+    #[inline]
+    fn checksum(data: &Self::Input) -> Self::Checksum {
+        let mut c = Self::new();
+        c.process(data);
+        *c.shift_reg()
+    }
+}

crates/algorithms/src/ffi/mod.rs

@@ -1,8 +1,5 @@
-mod crc32;
 use core::ffi::c_void;
 
-pub use crc32::*;
-
 #[inline]
 pub(crate) fn ref_to_voidptr<T: ?Sized>(r: &T) -> *const c_void {
     r as *const T as *const c_void

crates/algorithms/src/lib.rs

@@ -9,25 +9,6 @@
 
 #![cfg_attr(not(test), no_std)]
 
-/// CRCs from this module are implemented in C instead of Rust
+pub mod crc;
-pub mod ffi;
 
-mod crc_32;
+pub(crate) mod ffi;
-pub use crc_32::*;
-
-pub const CHECK_DATA: [u8; 9] = *b"123456789";
-
-pub trait Crc: Sized {
-    type Input: ?Sized;
-    type Checksum: Eq + Default + Copy;
-
-    fn new() -> Self;
-    fn process(&mut self, data: &Self::Input);
-    fn shift_reg(&mut self) -> &mut Self::Checksum;
-    #[inline]
-    fn checksum(data: &Self::Input) -> Self::Checksum {
-        let mut c = Self::new();
-        c.process(data);
-        *c.shift_reg()
-    }
-}