moved toml file read to a helper function

src/config.rs

@@ -1,5 +1,4 @@
 use std::{
-	fs::read_to_string,
 	env::{current_dir, var},
 	path::Path
 };
@@ -9,7 +8,7 @@ use toml::{
 	map::Map
 };
 
-use crate::error;
+use crate::{ error, util };
 
 pub struct Config {
 	pub local: Option<Map<String, Value>>,
@@ -23,13 +22,7 @@ impl Config {
 		//	initialize global config, if it exists
 		let str_path_global = var("HOME").unwrap() + "/.config/open.toml";
 		let path_global = Path::new(&str_path_global);
-		let global =
-			if path_global.exists() {
-				if let Ok(raw) = read_to_string(path_global) {
-					if let Ok(Value::Table(toml)) = toml::from_str(&raw) { Some(toml) }
-					else { None }
-				} else { None }
-			} else { None };
+		let global = util::read_toml(path_global);
 
 		//	propagate up for local config, if it exists
 		let cwd = current_dir().unwrap();
@@ -37,14 +30,10 @@ impl Config {
 		let mut local = None;
 		while let Some(parent) = path_local.parent() {
 			let file_local = path_local.join(".open");
-			if file_local.exists() {
-				if let Ok(raw) = read_to_string(file_local) {
-					if let Ok(Value::Table(toml)) = toml::from_str(&raw) {
+			if let Some(toml) = util::read_toml(file_local.as_path()) {
 				local = Some(toml);
 				break;
 			}
-				}
-			}
 
 			path_local = parent;
 		}

src/util.rs

@@ -1,5 +1,15 @@
+use std::{
+	fs::read_to_string,
+	path::Path
+};
 
-use toml::{ value::Array, Value };
+use toml::{
+	self,
+	Value,
+
+	map::Map,
+	value::Array,
+};
 
 ///	gets array entries with matching "match" values.
 pub fn matches(macrosection: Array, to_match: String) -> Vec<Value> {
@@ -14,3 +24,14 @@ pub fn matches(macrosection: Array, to_match: String) -> Vec<Value> {
 	}).map(|value| value.to_owned()).collect()
 }
 
+pub fn read_toml(path: &Path) -> Option<Map<String, Value>> {
+	if path.exists() {
+		if let Ok(raw) = read_to_string(path) {
+			if let Ok(Value::Table(toml)) = toml::from_str(&raw) {
+				return Some(toml);
+			}
+		}
+	}
+	None
+}
+