From 915e9568211e86fecdf81b2fa3265f21863917e9 Mon Sep 17 00:00:00 2001
From: Yehowshua Immanuel <programmed4jesus@gmail.com>
Date: Tue, 17 May 2022 22:04:32 -0400
Subject: [PATCH] now parsing by space

---
 README.md   |  5 +----
 src/main.rs | 41 ++++++++++++++---------------------------
 2 files changed, 15 insertions(+), 31 deletions(-)

diff --git a/README.md b/README.md
index 8235c1f..d89ed64 100644
--- a/README.md
+++ b/README.md
@@ -20,10 +20,7 @@ The first build of the program may take some time.
 ``cargo  run --release -- path/to/vcd/file``
 
 ## TODO
- - [x] Test positions with seeking
- - [x] vcd should be argument
- - [x] structure to store stream position against timestamp as string
- - [x] structure to store stream position against timestamp as BigInt
+ - [ ] We need a way to merge lines.
 
 ### April 14
  - [ ] store timestamps to struct
diff --git a/src/main.rs b/src/main.rs
index 5423c94..2171697 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,7 @@
 use std::io::prelude::*;
 use std::io;
 use std::fs::File;
+use std::collections::BTreeMap;
 
 use num::*;
 use clap::Parser;
@@ -17,44 +18,30 @@ struct Timestamp{
     timestamp:   BigInt
 }
 
+struct Signal {
+    name          : String,
+    timeline      : BTreeMap<BigInt, BigInt>,
+    children_arena: Vec<usize>,
+    parent_index  : usize
+}
+
 fn main() -> std::io::Result<()> {
     let args = Cli::parse();
+    let space = " ".as_bytes()[0];
 
     let file       = File::open(&args.path)?;
     let mut reader = io::BufReader::new(file);
 
-    let mut buffer             = String::new();
-    let mut timestamp_offsets  = Vec::new();
-    let mut timestamps         = Vec::new();
+    let mut buffer = Vec::<u8>::new();
+    let mut word_count = 0u64;
 
     while {
-        let bytes_read = reader.read_line(&mut buffer).unwrap();
+        let bytes_read = reader.read_until(space, &mut buffer).unwrap();
         bytes_read > 0
     } {
-        if &buffer[0..1] == "#" {
-            let pos = reader.stream_position().unwrap();
-            timestamp_offsets.push(pos);
-
-            let timestamp = {
-                let len = buffer.len();
-                let str_val = &buffer[1..(len - 1)].as_bytes();
-                BigInt::parse_bytes(str_val, 10).unwrap()
-            };
-            timestamps.push(timestamp);
-        }
-        buffer.clear()
+        word_count += 1;
     }
-
-    let index = 4;
-    let timestamp_offset = timestamp_offsets.get(index).unwrap();
-    let timestamp        = timestamps.get(index).unwrap();
-    dbg!((timestamp_offset, timestamp));
-
-    // seek to where we found the first timestamp and read
-    // out the next line
-    reader.seek(io::SeekFrom::Start(*timestamp_offset));
-    reader.read_line(&mut buffer);
-    dbg!(buffer);
+    dbg!(word_count);
 
     Ok(())
 }