remove direct dependancy on libc

Cargo.lock

@@ -616,7 +616,7 @@ dependencies = [
 
 [[package]]
 name = "markov"
-version = "0.8.1"
+version = "0.8.2"
 dependencies = [
  "async-compression",
  "bzip2-sys",
@@ -624,7 +624,6 @@ dependencies = [
  "futures",
  "hyper",
  "lazy_static",
- "libc",
  "log",
  "markov 1.1.0",
  "once_cell",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "markov"
-version = "0.8.1"
+version = "0.8.2"
 description = "Generate string of text from Markov chain fed by stdin"
 authors = ["Avril <flanchan@cumallover.me>"]
 edition = "2018"
@@ -71,7 +71,6 @@ serde = {version ="1.0", features=["derive"]}
 toml = "0.5.6"
 async-compression = {version = "0.3.5", features=["tokio-02", "bzip2"], optional=true}
 pin-project = "0.4"
-libc = "0.2.79"
 smallmap = "1.1.5"
 lazy_static = "1.4.0"
 once_cell = "1.4.1"

src/bytes.rs

@@ -1,6 +1,5 @@
-use libc::{
-    c_void,
-};
+use std::ptr;
+
 /// Copy slice of bytes only
 ///
 /// # Notes
@@ -9,7 +8,8 @@ pub fn copy_slice(dst: &mut [u8], src: &[u8]) -> usize
 {
     let sz = std::cmp::min(dst.len(),src.len());
     unsafe {
-	libc::memcpy(&mut dst[0] as *mut u8 as *mut c_void, &src[0] as *const u8 as *const c_void, sz);
+	//libc::memcpy(&mut dst[0] as *mut u8 as *mut c_void, &src[0] as *const u8 as *const c_void, sz);
+	ptr::copy_nonoverlapping(&src[0] as *const u8, &mut dst[0] as *mut u8, sz);
     }
     sz
 }
@@ -22,7 +22,8 @@ pub fn move_slice(dst: &mut [u8], src: &[u8]) -> usize
 {
     let sz = std::cmp::min(dst.len(),src.len());
     unsafe {
-	libc::memmove(&mut dst[0] as *mut u8 as *mut c_void, &src[0] as *const u8 as *const c_void, sz);
+	//libc::memmove(&mut dst[0] as *mut u8 as *mut c_void, &src[0] as *const u8 as *const c_void, sz);
+	ptr::copy(&src[0] as *const u8, &mut dst[0] as *mut u8, sz);
     }
     sz
 }