From 6e142decab2d71f6de51717d7b55ffffd0602444 Mon Sep 17 00:00:00 2001
From: Mike Buland <mike@xagasoft.com>
Date: Fri, 11 Jul 2025 00:46:35 -0700
Subject: Getting closer to writing everything.

Only dictionary left, and testing obviously. And reading...
---
 rust/src/lib.rs | 40 +++++++++++++++++++++++++++++++++-------
 1 file changed, 33 insertions(+), 7 deletions(-)

diff --git a/rust/src/lib.rs b/rust/src/lib.rs
index 9b177a1..1508594 100644
--- a/rust/src/lib.rs
+++ b/rust/src/lib.rs
@@ -60,14 +60,12 @@ impl Value {
     pub fn write<W: Write>(&self, w: &mut W) -> Result<(), std::io::Error> {
         match self {
             Self::Integer(x) => {
-                let mut bb = [0u8];
-                bb[0] = 'i' as u8;
+                let bb = ['i' as u8];
                 w.write_all(&bb)?;
                 w.write_all(&write_packed_int( *x ))?;
             },
             Self::ByteString(s) => {
-                let mut bb = [0u8];
-                bb[0] = 's' as u8;
+                let bb = ['s' as u8];
                 w.write_all(&bb)?;
                 w.write_all(&write_packed_int( s.len() as i64 ))?;
                 w.write_all( &s )?;
@@ -78,6 +76,13 @@ impl Value {
                 w.write_all( &bb )?;
             },
             Self::List(l) => {
+                let mut bb = ['l' as u8];
+                w.write_all(&bb)?;
+                for v in l {
+                    v.write( w )?;
+                }
+                bb[0] = 'e' as u8;
+                w.write_all(&bb)?;
             },
             Self::Dictionary(d) => {
             },
@@ -102,13 +107,34 @@ impl Value {
                         w.write_all( &bb )?;
                     },
                     FpCategory::Normal => {
-                        let div = 256f64.ln();
-                        todo!();
-
+                        let mut bin = Vec::<u8>::with_capacity(10);
+                        let (negative, d) = if f.is_sign_negative() { (true, -*f) } else { (false, *f) };
+                        let scale : i64 = (d.ln() / 256.0f64.ln()) as i64;
+                        let scale = if scale < 0 { -1 } else { scale };
+                        let mut d = d / 256.0_f64.powf( scale as f64 );
+                        bin.push( d as u8 );
+                        d = d.fract();
+                        for _ in 0..15 {
+                            d = d*256.0;
+                            bin.push( d as u8 );
+                            d = d.fract();
+                            if d == 0.0 {
+                                break;
+                            }
+                        }
+                        if negative {
+                            w.write_all( &write_packed_int( -(bin.len() as i64) ) )?;
+                        } else {
+                            w.write_all( &write_packed_int( bin.len() as i64 ) )?;
+                        }
+                        w.write_all( &bin )?;
+                        w.write_all( &write_packed_int( scale ) )?;
                     },
                 }
             },
             Self::Nothing => {
+                let bb = ['n' as u8];
+                w.write_all( &bb )?;
             },
         }
         Ok(())
-- 
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