this loop is too slow - but may be useful for future reference

README.md

@@ -17,7 +17,7 @@ a large VCD file from
 
 The first build of the program may take some time.
 
-``cargo  run --release -- path/to/vcd/file``
+``cargo run --release test-vcd-files/aldec/SPI_Write.vcd``
 
 ## TODO
  - [ ] We need a way to merge lines.

src/main.rs

@@ -18,6 +18,19 @@ struct Timestamp{
     timestamp:   BigInt
 }
 
+struct Cursor{
+    line: u64,
+    col : u64
+}
+
+enum Tokens {
+    Date,
+    End,
+    String,
+    Version,
+    Time,
+}
+
 struct Signal {
     name          : String,
     timeline      : BTreeMap<BigInt, BigInt>,
@@ -35,12 +48,33 @@ fn main() -> std::io::Result<()> {
     let mut buffer = Vec::<u8>::new();
     let mut word_count = 0u64;
 
-    while {
+    // while {
-        let bytes_read = reader.read_until(space, &mut buffer).unwrap();
+    //     let bytes_read = reader.read_until(b' ', &mut buffer).unwrap();
-        bytes_read > 0
+    //     bytes_read > 0
-    } {
+    // } {
+    //     word_count += 1;
+
+    //     if word_count < 5 {
+    //         let string = std::str::from_utf8(&buffer).unwrap();
+    //         dbg!(string);
+    //     }
+    //     buffer.clear();
+    // }
+    loop {
+        buffer.clear();
+        let t = reader
+            .by_ref()
+            .bytes()
+            .map(|c| c.unwrap())
+            .take_while(|c| 
+                c != &b' ' && 
+                c != &b'\n');
+        buffer.extend(t);
         word_count += 1;
+        
     }
+    let string = std::str::from_utf8(&buffer).unwrap();
+    dbg!(string);
     dbg!(word_count);
 
     Ok(())