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).

2 files changed, 33 insertions, 0 deletions

diff --git a/util/Cargo.toml b/util/Cargo.toml
new file mode 100644
index 0000000..70d66bf
--- /dev/null
+++ b/util/Cargo.toml
@@ -0,0 +1,10 @@
+[package]
+name = "util"
+version = "0.1.0"
+authors = ["stuebinm <stuebinm@disroot.org>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+isabelle-unicode = { path = "../isabelle-unicode" }
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));
+
+}