add durandal::chunk

src/durandal/chunk.rs

@@ -0,0 +1,31 @@
+use crate::durandal::err::*;
+
+impl<T: Chunked<T>> Chunker<Vec<T>> for T
+{
+   fn chunk(b: &[u8]) -> ResultS<Vec<T>>
+   {
+      let mut v = Vec::with_capacity(b.len() / T::SIZE_CHUNK);
+      let mut p = 0;
+
+      while p < b.len() {
+         v.push(T::read(&b[p..])?);
+         p += T::SIZE_CHUNK;
+      }
+
+      Ok(v)
+   }
+}
+
+pub trait Chunked<T>
+{
+   const SIZE_CHUNK: usize;
+
+   fn read(b: &[u8]) -> ResultS<T>;
+}
+
+pub trait Chunker<T>
+{
+   fn chunk(b: &[u8]) -> ResultS<T>;
+}
+
+// EOF

src/durandal/mod.rs

@@ -2,6 +2,7 @@
 
 #[allow(dead_code)]
 pub mod bin;
+pub mod chunk;
 pub mod crc;
 pub mod err;
 pub mod fx32;

src/marathon/term.rs

@@ -1,4 +1,4 @@
-use crate::durandal::{bin::*, err::*, text::*};
+use crate::durandal::{bin::*, chunk::*, err::*, text::*};
 use std::fmt;
 
 fn read_group(b: &[u8], text: &[u8]) -> ResultS<Group>
@@ -57,9 +57,9 @@ fn read_terminal(b: &[u8]) -> ResultS<(usize, Terminal)>
    Ok((end, Terminal{lines, groups, faces}))
 }
 
-impl Terminal
+impl Chunker<Vec<Terminal>> for Terminal
 {
-   pub fn chunk(b: &[u8]) -> ResultS<Vec<Terminal>>
+   fn chunk(b: &[u8]) -> ResultS<Vec<Terminal>>
    {
       let mut v = Vec::new();
       let mut p = 0;