remove grmtools

the parser using grmtools was way oversized for just doing escape
sequences, and only really existed since I wanted to play around with
it.

The new implementation depends on no external crates, uses just an iter
wrapped into a nicely composable function, and appears to be exactly
equivalent (but faster).

1 files changed, 23 insertions, 0 deletions

diff --git a/util/src/main.rs b/util/src/main.rs
new file mode 100644
index 0000000..4670b38
--- /dev/null
+++ b/util/src/main.rs
@@ -0,0 +1,23 @@
+use std::io;
+use std::io::BufRead;
+
+use isabelle_unicode::PrettyUnicode;
+
+
+fn main() {
+
+    let stdin = io::stdin();
+
+    stdin.lock()
+         .lines()
+         .filter_map(|line| match line {
+             Ok(line) if line.trim().is_empty()
+                 => Some("\n".to_string()),
+             Ok(line)
+                 => line.to_pretty_unicode(),
+             Err(_)
+                 => None
+         })
+        .for_each(|line| print!("{}", line));
+
+}