Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "quickmath"
-version = "0.3.1"
+version = "0.2.4"
 edition = "2021"
 authors = [ "Valerie Wolfe <sleeplessval@gmail.com>" ]
 description = "A quick command-line math evaluator."
@@ -14,8 +14,6 @@ path = "src/main.rs"
 
 [dependencies]
 evalexpr = "11.0.0"
-pico-args = "0.5.0"
-rustyline = "14.0.0"
 termion = "1.5.6"
 
 [profile.release]

src/context/helper.rs

@@ -1,140 +0,0 @@
-use evalexpr::{
-	Value,
-
-	EvalexprError
-};
-
-use crate::util;
-
-pub type EvalResult = Result<Value, EvalexprError>;
-
-
-//	Mathematics
-pub fn cosine(arg: &Value) -> EvalResult {
-	Ok(
-		if		let Value::Float(float)	= arg { float.clone() }
-		else if	let Value::Int(int)		= arg { int.clone() as f64 }
-		else { return Err(EvalexprError::expected_number(arg.clone())) }
-		.cos().into()
-	)
-}
-
-pub fn fix(arg: &Value) -> EvalResult {
-	if let Value::Tuple(args) = arg {
-		let len = args.len();
-		if len == 2 {
-			let value =
-				if let Value::Float(float) = args[0] { float.clone() }
-				else { return Err(EvalexprError::expected_float(args[0].clone())); };
-
-			let operand = 10u64.pow(
-				if let Value::Int(int) = args[1] { int.clone() }
-				else { return Err(EvalexprError::expected_int(args[1].clone())); }
-				as u32
-			) as f64;
-
-			Ok( ((value * operand).round() / operand).into() )
-		} else { Err(EvalexprError::wrong_function_argument_amount(len, 2)) }
-	} else { Err(EvalexprError::wrong_function_argument_amount(1, 2)) }
-}
-
-pub fn logarithm(arg: &Value) -> EvalResult {
-	let value: f64;
-	let base: Option<f64>;
-	match arg {
-		Value::Tuple(tuple)
-			=>	{
-				let len = tuple.len();
-				if len != 2 { return Err(EvalexprError::WrongOperatorArgumentAmount { expected: 2, actual: len }) }
-
-				let i_value = tuple.get(0).unwrap();
-				if		let Value::Float(float)	= i_value { value = float.clone(); }
-				else if	let Value::Int(int)		= i_value { value = int.clone() as f64; }
-				else { return Err(EvalexprError::expected_number(i_value.clone())); }
-
-				let i_base = tuple.get(1).unwrap();
-				if		let Value::Float(float)	= i_value { base = Some(float.clone()); }
-				else if	let Value::Int(int)		= i_value { base = Some(int.clone() as f64); }
-				else { return Err(EvalexprError::expected_number(i_base.clone())); }
-			},
-		Value::Float(float)
-			=>	{
-				value = float.clone();
-				base = None;
-			},
-		Value::Int(int)
-			=>	{
-				value = int.clone() as f64;
-				base = None;
-			}
-		_	=>	return Err(EvalexprError::CustomMessage("Expected numbers.".to_owned()))
-	}
-
-	if let Some(base) = base { Ok(value.log(base).into()) }
-	else { Ok(value.ln().into()) }
-}
-
-pub fn sine(arg: &Value) -> EvalResult {
-	Ok(
-		if		let Value::Float(float)	= arg { float.clone() }
-		else if	let Value::Int(int)		= arg { int.clone() as f64 }
-		else { return Err(EvalexprError::expected_number(arg.clone())) }
-		.sin().into()
-	)
-}
-
-pub fn square_root(arg: &Value) -> EvalResult {
-	Ok(
-		if		let Value::Float(float)	= arg { float.clone() }
-		else if	let Value::Int(int)		= arg { int.clone() as f64 }
-		else { return Err(EvalexprError::expected_number(arg.clone())) }
-		.sqrt().into()
-	)
-}
-
-pub fn tangent(arg: &Value) -> EvalResult {
-	Ok(
-		if		let Value::Float(float)	= arg { float.clone() }
-		else if	let Value::Int(int)		= arg { int.clone() as f64 }
-		else { return Err(EvalexprError::expected_number(arg.clone())) }
-		.tan().into()
-	)
-}
-
-
-//	Data Science
-pub fn average(arg: &Value) -> EvalResult {
-	if let Value::Tuple(args) = arg {
-		let len = args.len() as f64;
-		let mut total = 0f64;
-
-		for arg in args {
-			total +=
-				if		let Value::Float(float) = arg { float.clone() }
-				else if	let Value::Int(int)		= arg { int.clone() as f64 }
-				else { todo!() };
-		}
-
-		Ok( (total / len).into() )
-	} else { todo!() }
-}
-
-//	Radix conversion
-pub fn binary(arg: &Value) -> EvalResult {
-	if let Value::Int(int) = arg { Ok( format!("0b{:b}", int).into() ) }
-	else if let Value::String(string) = arg { util::parse_radix("0b", 2, string) }
-	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
-}
-
-pub fn hexadecimal(arg: &Value) -> EvalResult {
-	if let Value::Int(int) = arg { Ok( format!("0x{:X}", int).into() ) }
-	else if let Value::String(string) = arg { util::parse_radix("0x", 16, string) }
-	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
-}
-
-pub fn octal(arg: &Value) -> EvalResult {
-	if let Value::Int(int) = arg { Ok( format!("0o{:#o}", int).into() ) }
-	else if let Value::String(string) = arg { util::parse_radix("0o", 8, string) }
-	else { Err(EvalexprError::expected_number_or_string(arg.clone())) }
-}
-

src/context/mod.rs

@@ -1,68 +0,0 @@
-
-pub mod global;
-pub mod helper;
-
-
-use pico_args::Arguments;
-use evalexpr::{
-	context_map,
-
-	ContextWithMutableVariables,
-	HashMapContext,
-	Value
-};
-
-use crate::flag;
-
-pub fn build(args: &mut Arguments) -> HashMapContext {
-	let mut output =
-		if !args.contains(flag::EMPTY_CONTEXT) {
-			context_map! {
-				//	globals
-				"c"		=>	global::LIGHT_SPEED,
-				"e"		=>	global::EULER,
-				"phi"	=>	global::GOLDEN_RATIO,
-				"pi"	=>	global::PI,
-				"√2"	=>	global::ROOT_TWO,
-
-				//	math functions
-				"cos"	=>	Function::new(|arg| helper::cosine(arg)),
-				"fix"	=>	Function::new(|arg| helper::fix(arg)),
-				"log"	=>	Function::new(|arg| helper::logarithm(arg)),
-				"sin"	=>	Function::new(|arg| helper::sine(arg)),
-				"sqrt"	=>	Function::new(|arg| helper::square_root(arg)),
-				"tan"	=>	Function::new(|arg| helper::tangent(arg)),
-
-				//	data science functions
-				"avg"	=>	Function::new(|arg| helper::average(arg)),
-
-				//	radix functions
-				"bin"	=>	Function::new(|arg| helper::binary(arg)),
-				"hex"	=>	Function::new(|arg| helper::hexadecimal(arg)),
-				"oct"	=>	Function::new(|arg| helper::octal(arg)),
-
-				//	character aliases
-				"ϕ"		=>	global::GOLDEN_RATIO,
-				"π"		=>	global::PI,
-				"√"		=>	Function::new(|arg| helper::square_root(arg))
-			}.unwrap()
-		} else { HashMapContext::new() };
-
-	while let Ok(value) = args.value_from_str::<&str, String>(flag::SET) {
-		let split: Vec<&str> = value.split('=').collect();
-		if split.len() == 2 {
-			let key = split[0].to_owned();
-
-			let value_str = split[1];
-			let value =
-				if let Ok(integer) = value_str.parse::<i64>() { Value::Int(integer) }
-				else if let Ok(float) = value_str.parse::<f64>() { Value::Float(float) }
-				else { Value::from(value_str) };
-
-			output.set_value(key, value).ok(); }
-		else { std::process::exit(1); }
-	}
-
-	output
-}
-

src/flag.rs

@@ -1,7 +0,0 @@
-
-pub const EMPTY_CONTEXT:	[&str;2]	=	[ "-E", "--empty"];
-pub const HELP:				[&str;2]	=	[ "-h", "--help" ];
-pub const QUIET:			[&str;2]	=	[ "-q", "--quiet" ];
-pub const SET:				&str		=	"--set";
-pub const VERSION:			[&str;2]	=	[ "-V", "--version" ];
-

src/helper.rs

@@ -0,0 +1,147 @@
+use evalexpr::{
+	Value,
+
+	EvalexprError
+};
+
+use crate::util;
+
+pub type EvalResult = Result<Value, EvalexprError>;
+
+
+//	Mathematics
+pub fn fix(arg: &Value) -> EvalResult {
+	let args = arg.as_tuple()?;
+
+	let count = args.len();
+	if count != 2 {
+		return Err(EvalexprError::WrongFunctionArgumentAmount { expected: 2, actual: count });
+	}
+
+	let float = args[0].as_float()?;
+	let figures = args[1].as_int()?;
+
+	let operand: f64 = i64::pow(10, figures as u32) as f64;
+	let output = f64::round(float * operand) / operand;
+	return Ok(output.into());
+}
+
+pub fn logarithm(arg: &Value) -> EvalResult {
+	let arguments: Vec<Value>;
+	let count: usize;
+	if arg.is_tuple() {
+		arguments = arg.as_tuple()?;
+		count = arguments.len();
+	} else if arg.is_float() {
+		arguments = vec!(arg.as_float()?.into());
+		count = 1;
+	} else if arg.is_int() {
+		arguments = vec!((arg.as_int()? as f64).into());
+		count = 1;
+	} else {
+		return Err(EvalexprError::CustomMessage("Expected numbers".to_string()));
+	}
+
+	let output: Value;
+	match count {
+		1 => {
+			let argument = &arguments[0];
+			if !argument.is_number() {
+				return Err(EvalexprError::CustomMessage("Expected number".to_string()));
+			}
+			let number = if argument.is_float() { argument.as_float()? } else { argument.as_int()? as f64 };
+			output = number.ln().into();
+		},
+		2 => {
+			let arg_value = &arguments[0];
+			let arg_base = &arguments[1];
+			if !(arg_value.is_number() && arg_base.is_number()) {
+				return Err(EvalexprError::CustomMessage("Expected two numbers".to_string()));
+			}
+			let value: f64 = if arg_value.is_float() { arg_value.as_float()? } else { arg_value.as_int()? as f64 };
+			let base: f64 = if arg_base.is_float() { arg_base.as_float()? } else { arg_base.as_int()? as f64 };
+			output = value.log(base).into();
+		},
+		_ => {
+			return Err(EvalexprError::WrongFunctionArgumentAmount { expected: 2, actual: count });
+		}
+	}
+	return Ok(output);
+}
+
+pub fn square_root(arg: &Value) -> EvalResult {
+	if !arg.is_number() {
+		return Err(EvalexprError::CustomMessage("Expected a number.".to_string()));
+	}
+	let value: f64 = if arg.is_float() { arg.as_float()? } else { arg.as_int()? as f64 };
+	return Ok(value.sqrt().into());
+}
+
+
+//	Data Science
+pub fn average(arg: &Value) -> EvalResult {
+	let arguments = arg.as_tuple()?;
+	let count = arguments.len() as i64;
+	let mut is_float = false;
+	let mut total_i = 0i64;
+	let mut total_f = 0f64;
+
+	for argument in arguments {
+		if let Value::Float(float) = argument {
+			if !is_float {
+				total_f = total_i as f64;
+				is_float = true;
+			}
+			total_f += float;
+		} else if let Value::Int(int) = argument {
+			if is_float {
+				total_f += int as f64;
+			} else {
+				total_i += int;
+			}
+		}
+	}
+	
+	let result_i: i64;
+	let result_f: f64;
+	if !is_float {
+		is_float = total_i % count == 0;
+		total_f = total_i as f64;
+	}
+
+	if is_float {
+		result_f = total_f / (count as f64);
+		return Ok(result_f.into());
+	} else {
+		result_i = total_i / count;
+		return Ok(result_i.into());
+	}
+}
+
+//	Radix conversion
+pub fn binary(arg: &Value) -> EvalResult {
+	if !arg.is_string() {
+		let num = arg.as_int()?;
+		let fmt = format!("0b{:b}", num);
+		return Ok(fmt.into());
+	}
+	util::parse_radix("0b", 2, arg)
+}
+
+pub fn hexadecimal(arg: &Value) -> EvalResult {
+	if !arg.is_string() {
+		let num = arg.as_int()?;
+		let fmt = format!("0x{:X}", num);
+		return Ok(fmt.into());
+	}
+	util::parse_radix("0x", 16, arg)
+}
+
+pub fn octal(arg: &Value) -> EvalResult {
+	if !arg.is_string() {
+		let num = arg.as_int()?;
+		let fmt = format!("{:#o}", num);
+		return Ok(fmt.into());
+	}
+	util::parse_radix("0o", 8, arg)
+}

src/main.rs

@@ -4,104 +4,109 @@ use std::{
 		stdin,
 		stdout,
 
-		IsTerminal,
-		Read,
 		Write
-	},
-	process::exit
+	}
 };
 
 use evalexpr::{
+	context_map,
 	eval_with_context_mut,
-
 	ContextWithMutableVariables,
-	EvalexprError,
 	HashMapContext,
 	Value
 };
-use pico_args::Arguments;
-use rustyline::DefaultEditor;
 use termion::{
 	color,
 	style
 };
 
-mod context;
-mod flag;
+mod global;
+mod helper;
 mod util;
 
 pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 
 fn main() {
-	let mut args = Arguments::from_env();
+	//	build eval context
+	let mut context = context_map! {
+		//	globals
+		"c"		=>	global::LIGHT_SPEED,
+		"e"		=>	global::EULER,
+		"phi"	=>	global::GOLDEN_RATIO,
+		"pi"	=>	global::PI,
+		"√2"	=>	global::ROOT_TWO,
 
-	//	handle breaking flags
-	if args.contains(flag::HELP) {
-		help_text();
-		return;
-	}
-	if args.contains(flag::VERSION) {
-		version_text();
-		return;
-	}
+		//	math functions
+		"fix"	=>	Function::new(|arg| helper::fix(arg)),
+		"log"	=>	Function::new(|arg| helper::logarithm(arg)),
+		"sqrt"	=>	Function::new(|arg| helper::square_root(arg)),
 
-	let mut context = context::build(&mut args);
-	let is_terminal = stdin().is_terminal() && stdout().is_terminal();
-	let quiet = args.contains(flag::QUIET) || !is_terminal;
+		//	data science functions
+		"avg"	=>	Function::new(|arg| helper::average(arg)),
+
+		//	radix functions
+		"bin"	=>	Function::new(|arg| helper::binary(arg)),
+		"hex"	=>	Function::new(|arg| helper::hexadecimal(arg)),
+		"oct"	=>	Function::new(|arg| helper::octal(arg)),
+
+		//	character aliases
+		"ϕ"		=>	global::GOLDEN_RATIO,
+		"π"		=>	global::PI,
+		"√"		=>	Function::new(|arg| helper::square_root(arg))
+	}.unwrap();
 
 	//	collect args and evaluate if present
-	let expressions = args.finish();
+	let expressions: Vec<String> = env::args().skip(1).collect();
 	if expressions.len() > 0 {
 		for expression in expressions {
-			let expression: String = expression.to_string_lossy().into();
-			eval(&expression, &mut context, quiet);
+			match expression.as_str() {
+				"help"	=>	help_text(),
+				_		=>	do_eval(expression, &mut context)
+			}
 		}
 	} else {
-		if !is_terminal {
-			let mut buffer = String::with_capacity(0);
-			if let Ok(_) = stdin().read_to_string(&mut buffer) {
-				for expression in buffer.lines() {
-					eval(&expression.to_string(), &mut context, quiet);
-				}
-			}
-		} else if let Ok(mut rl) = DefaultEditor::new() {
 		//	enter interactive mode if no args are given
-			version_text();
-			println!("{}Interactive Mode{}", style::Faint, style::Reset);
+		println!("{}quickmaths v{}{}\n{}Interactive Mode{}", style::Bold, VERSION, style::Reset, style::Faint, style::Reset);
 		loop {
-				if let Ok(line) = rl.readline("> ") {
+			print!("> ");
+			stdout().flush().unwrap();
+			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();
 			match line.as_str() {
 				""		|
 				"exit"	=>	break,
-						_		=>	eval(&line, &mut context, quiet)
-					}
+				_		=>	do_eval(line, &mut context)
 			}
 			reset();
 		}
 	}
-	}
 }
 
-fn eval(expression: &str, context: &mut HashMapContext, quiet: bool) {
+fn do_eval(i_expression: String, context: &mut HashMapContext) {
+	let expression = i_expression.as_str();
 	let result = eval_with_context_mut(expression, context);
-
-	if let Ok(ref result) = result { context.set_value("$".to_owned(), result.clone()).ok(); }
-
-	if quiet {
-		if let Ok(result) = result { println!("{result}") }
-		else { exit(1) }
-	} else { format(expression, result) }
-}
-
-fn format(expression: &str, result: Result<Value, EvalexprError>) {
 	if let Ok(result) = result {
-		if !result.is_empty() {
-			let delimiter =
+		//	display empty result
+		if result.is_empty() {
+			println!(
+				"{green}✓ {bold}{expression}",
+				bold = style::Bold,
+				green = color::Fg(color::Green)
+			);
+			return;
+		}
+
+		//	get appropriate symbol for result by type
+		let delimiter;
 		match result {
-					Value::Boolean(_)	=>	"is",
-					Value::String(_)	=>	"=>",
-					_					=>	"="
-				};
+			Value::Boolean(_bool)		=>	delimiter = "is",
+			Value::String(ref _str)		=>	delimiter = "=>",
+			_							=>	delimiter = "="
+		}
 		println!(
 			"{faint}{italic}{expression}{reset} {delimiter} {bold}{result}",
 			bold = style::Bold,
@@ -109,13 +114,9 @@ fn format(expression: &str, result: Result<Value, EvalexprError>) {
 			italic = style::Italic,
 			reset = style::Reset
 		);
-		} else {
-			println!(
-				"{green}✓ {bold}{expression}",
-				bold = style::Bold,
-				green = color::Fg(color::Green)
-			);
-		}
+
+		//	set "last" variable
+		context.set_value("$".to_string(), result).ok();
 	} else {
 		println!(
 			"{red}✕ {bold}{expression}",
@@ -130,17 +131,16 @@ fn reset() {
 	stdout().flush().unwrap();
 }
 
-fn version_text() {
-	println!("qm v{VERSION}");
-}
-
 fn help_text() {
-	version_text();
 	println!(
-"Valerie Wolfe <sleeplessval@gmail.com>
+		"{bold}quickmaths v{version}{reset}
+Valerie Wolfe <sleeplessval@gmail.com>
 A mathematical expression evaluator written in Rust.
 
 usage:
-   qm [EXPRESSION]..."
+   qm [EXPRESSION]...",
+		bold = style::Bold,
+		reset = style::Reset,
+		version = crate::VERSION
 	);
 }

src/util.rs

@@ -1,10 +1,18 @@
+use evalexpr::{
+	Value,
 	
-use evalexpr::{ EvalexprError, Value };
+	EvalexprError
+};
 
-pub fn parse_radix(prefix: &str, base: u32, arg: &str) -> Result<Value, EvalexprError> {
-	let parse = arg.strip_prefix(prefix).unwrap_or(arg);
+pub(crate) fn parse_radix(prefix: &str, base: u32, arg: &Value) -> Result<Value, EvalexprError> {
+	let i_parse = arg.as_string()?;
+	let parse = i_parse.strip_prefix(prefix).unwrap_or(i_parse.as_str());
 
-	if let Ok(int) = i64::from_str_radix(parse, base) { Ok(int.into()) }
-	else { Err(EvalexprError::CustomMessage("failed to parse integer from string".to_string())) }
+	let i_result = i64::from_str_radix(parse, base);
+	if i_result.is_err() {
+		return Err(EvalexprError::CustomMessage("failed to parse integer from string".to_string()));
+	}
+	let result = i_result.ok();
+
+	return Ok(result.unwrap().into());
 }
-