initial build & commit

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,65 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
+[[package]]
+name = "evalexpr"
+version = "7.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d4fd7bd9e32c1205549decf6f36772d7b606a579b26afaffa335ae148151a5d"
+
+[[package]]
+name = "libc"
+version = "0.2.126"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"
+
+[[package]]
+name = "numtoa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
+
+[[package]]
+name = "quickmaths"
+version = "0.1.0"
+dependencies = [
+ "evalexpr",
+ "termion",
+]
+
+[[package]]
+name = "redox_syscall"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62f25bc4c7e55e0b0b7a1d43fb893f4fa1361d0abe38b9ce4f323c2adfe6ef42"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
+name = "redox_termios"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8440d8acb4fd3d277125b4bd01a6f38aee8d814b3b5fc09b3f2b825d37d3fe8f"
+dependencies = [
+ "redox_syscall",
+]
+
+[[package]]
+name = "termion"
+version = "1.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "077185e2eac69c3f8379a4298e1e07cd36beb962290d4a51199acf0fdc10607e"
+dependencies = [
+ "libc",
+ "numtoa",
+ "redox_syscall",
+ "redox_termios",
+]

Cargo.toml

@@ -0,0 +1,10 @@
+[package]
+name = "quickmaths"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+evalexpr = "7.2.0"
+termion = "1.5.6"

src/main.rs

@@ -0,0 +1,62 @@
+use std::{env, io::stdin};
+
+use evalexpr::{
+	//context_map,
+	eval_with_context_mut,
+
+	ContextWithMutableVariables,
+	HashMapContext,
+	Value,
+};
+use termion::{color, style};
+
+fn main() {
+	//let mut context = context_map! {}.unwrap();
+	let mut context = HashMapContext::new();
+	let expressions: Vec<String> = env::args().skip(1).collect();
+	if expressions.len() == 0 {
+		loop {
+			let mut i_line = String::new();
+			let line_result = stdin().read_line(&mut i_line);
+			if line_result.is_err() { break; }
+			let line = i_line.trim().to_string();
+			if line.is_empty() { break; }
+			let result = do_eval(line, &mut context);
+			println!("{}{}{}", result.0, color::Fg(color::Reset), style::Reset);
+		}
+	} else {
+		for expression in expressions {
+			let result = do_eval(expression, &mut context);
+			println!("{}{}{}", result.0, color::Fg(color::Reset), style::Reset);
+		}
+	}
+}
+
+fn do_eval(i_expression: String, context: &mut HashMapContext) -> (String, Option<Value>) {
+	let expression = i_expression.as_str();
+	let i_result = eval_with_context_mut(expression, context);
+	if i_result.is_err() {
+		return (
+			format!("{}🞪 {}{}", color::Fg(color::Red), style::Bold, expression), 
+			None,
+		);
+	}
+	let result = i_result.ok().unwrap();
+	if result.is_empty() {
+		return (
+			format!("{}✓ {}{}", color::Fg(color::Green), style::Bold, expression),
+			None,
+		);
+	}
+	return (
+		format!(
+			"{}{}{}{} = {}",
+			style::Faint,
+			style::Italic,
+			expression,
+			style::Reset,
+			result
+		),
+		Some(result),
+	);
+}