file to c iters ok

.gitignore

@@ -4,3 +4,4 @@ bin/
 obj/
 sha256_literal/
 **/target/
+test.txt

generator-native/src/iter/file.rs

@@ -3,36 +3,23 @@ use std::{
 	Read,
     },
 };
-use heaparray::{
-    heap,
-};
 
-pub struct BufferedReadIter<F>
-where F: Read
-{
-    iter: F,
-    buffer: Box<[u8]>,
-    buffer_len: usize,
-}
+pub struct ByteIter<F: Read>
+    (F, [u8; 1]);
 
-impl<F: Read> Iterator for BufferedReadIter<F>
+impl<T> Iterator for ByteIter<T>
+where T: Read
 {
-    type Item = Box<[u8]>;
+    type Item = u8;
 
     fn next(&mut self) -> Option<Self::Item>
     {
-	if self.buffer_len >= self.buffer.len() {
-	    // Buffer is full.
-	    return Some(self.swap_out());
-	}
-	
-	if let Ok(read) = self.iter.read(&mut self.buffer[self.buffer_len..])
+	if let Ok(read) = self.0.read(&mut self.1[..])
 	{
-	    self.buffer_len += read;
-	    if self.buffer_len ==0 {
+	    if read < 1 {
 		None
 	    } else {
-		Some(self.swap_out())
+		Some(self.1[0])
 	    }
 	} else {
 	    None
@@ -40,32 +27,19 @@ impl<F: Read> Iterator for BufferedReadIter<F>
     }
 }
 
-impl<F: Read> BufferedReadIter<F>
+impl<T> ByteIter<T>
+where T: Read
 {
-    fn swap_out(&mut self) -> Box<[u8]>
-    {
-	let len = self.buffer_len;
-	self.buffer_len=0;
-
-	heaparray::box_slice(&mut self.buffer[..len])
-    }
-
-    pub fn new(iter: F, buffer_len: usize) -> Self {
-	let buffer = heap![u8; buffer_len].into_box();
-	Self {
-	    iter,
-	    buffer_len: 0,
-	    buffer,
-	}
+    fn new(stream: T) -> Self {
+	Self(stream, [0u8; 1])
     }
 }
 
-pub trait ReadIterExt: Read + Sized
+pub trait ByteIterExt: Read + Sized
 {
-    fn into_iter(self, buffer_len: usize) -> BufferedReadIter<Self>
+    fn into_byte_iter(self) -> ByteIter<Self>
     {
-	BufferedReadIter::new(self, buffer_len)
+	ByteIter::new(self)
     }
 }
-impl<T: Read> ReadIterExt for T{}
-
+impl<T: Read> ByteIterExt for T{}

generator-native/src/iter/mod.rs

@@ -1,12 +1,15 @@
 mod group;
 pub use group::*;
 
+mod read;
+pub use read::*;
+
 mod file;
 pub use file::*;
 
 pub mod prelude
 {
     pub use super::{
-	ReadIterExt, GroupExt,
+	ReadIterExt, GroupExt, ByteIterExt,
     };
 }

generator-native/src/iter/read.rs

@@ -0,0 +1,70 @@
+use std::{
+    io::{
+	Read,
+    },
+};
+use heaparray::{
+    heap,
+};
+
+pub struct BufferedReadIter<F>
+where F: Read
+{
+    iter: F,
+    buffer: Box<[u8]>,
+    buffer_len: usize,
+    buffer_push: usize,
+}
+
+impl<F: Read> Iterator for BufferedReadIter<F>
+{
+    type Item = u8;
+
+    fn next(&mut self) -> Option<Self::Item>
+    {
+	if self.buffer_len > 0 {
+	    let output = self.buffer[self.buffer_push];
+	    self.buffer_push += 1;
+	    self.buffer_len -= 1;
+
+	    return Some(output);
+	}
+	self.buffer_push = 0;
+
+	
+	if let Ok(read) = self.iter.read(&mut self.buffer[self.buffer_len..])
+	{
+	    self.buffer_len += read;
+	    if self.buffer_len == 0 {
+		None
+	    } else {
+		self.next()
+	    }
+	} else {
+	    None
+	}
+    }
+}
+
+impl<F: Read> BufferedReadIter<F>
+{
+    pub fn new(iter: F, buffer_len: usize) -> Self {
+	let buffer = heap![u8; buffer_len].into_box();
+	Self {
+	    iter,
+	    buffer_len: 0,
+	    buffer_push: 0,
+	    buffer,
+	}
+    }
+}
+
+pub trait ReadIterExt: Read + Sized
+{
+    fn into_iter(self, buffer_len: usize) -> BufferedReadIter<Self>
+    {
+	BufferedReadIter::new(self, buffer_len)
+    }
+}
+impl<T: Read> ReadIterExt for T{}
+

generator-native/src/main.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 extern crate heaparray;
 
 use std::{
@@ -11,18 +13,23 @@ use std::{
 mod iter;
 use iter::prelude::*;
 
+mod translate;
+
 fn main() -> Result<(), Box<dyn Error>>{
 
-    /*let file = OpenOptions::new()
+    let file = OpenOptions::new()
 	.read(true)
 	.open("test.txt")?;
 
-    for buf in file.into_iter(2).group_at(2)
+    println!("{{");
+    for buf in file.into_iter(4)
+	.map(|byte| format!("0x{:02x},", byte))
+	.group_at(4)
+	.map(|strs| format!("\t{}", strs.join(" ")))
     {
-	println!("{:?}", buf);
-}*/
-
-    
+	println!("{}", buf);
+    }
+    println!("}}");
 
     Ok(())
 }

generator-native/src/translate/mod.rs

@@ -0,0 +1,2 @@
+mod sanitise;
+pub use sanitise::*;

generator-native/src/translate/sanitise.rs

@@ -0,0 +1,22 @@
+/// Escape text for insertion.
+pub fn c_escape<T>(input: T) -> String
+    where T: AsRef<str>
+{
+    let input = input.as_ref();
+    let mut chr = Vec::new();
+    for c in input.chars() {
+	match c {
+	    '\\' => {
+		chr.push('\\');
+		chr.push('\\');
+	    },
+	    '\"' => {
+		chr.push('\\');
+		chr.push('\"');
+	    },
+	    _ => chr.push(c),
+ 	};
+    }
+
+    chr.into_iter().collect()
+}