Allowed font_style to be an array

src/font_style.rs

@@ -0,0 +1,65 @@
+use std::{
+    collections::HashMap,
+    fmt::{self, Display, Formatter},
+};
+
+use lazy_static::lazy_static;
+
+use yaml_rust::{yaml::Hash, Yaml};
+
+lazy_static! {
+    static ref ANSI_STYLES: HashMap<&'static str, u8> = {
+        let mut m = HashMap::new();
+        m.insert("regular", 0);
+        m.insert("bold", 1);
+        m.insert("faint", 2);
+        m.insert("italic", 3);
+        m.insert("underline", 4);
+        m.insert("blink", 5);
+        m.insert("rapid-blink", 6);
+        m.insert("overline", 53);
+        m
+    };
+}
+
+/// A list of font styles
+#[derive(Default)]
+pub struct FontStyle(Vec<u8>);
+
+impl FontStyle {
+    /// Creates a FontStyle from the yaml
+    ///
+    /// # Panics
+    ///
+    /// Panics if the yaml value is neither a string or
+    /// a yaml array
+    pub fn from_yaml(map: &Hash) -> Self {
+        match map.get(&Yaml::String("font-style".into())) {
+            Some(value) => match value {
+                Yaml::String(s) => Self(vec![ANSI_STYLES[s.as_str()]]),
+                Yaml::Array(array) => {
+                    let mut vec = Vec::with_capacity(array.len());
+                    for item in array {
+                        vec.push(
+                            ANSI_STYLES[item
+                                .as_str()
+                                .expect("font_style should be a string or an array of strings")],
+                        );
+                    }
+                    Self(vec)
+                }
+                _ => panic!("font-style should be a string or an array of strings"),
+            },
+            None => Self::default(),
+        }
+    }
+}
+
+impl Display for FontStyle {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        for style in &self.0 {
+            write!(f, "{};", style)?;
+        }
+        Ok(())
+    }
+}

src/main.rs

@@ -1,6 +1,7 @@
 mod color;
 mod error;
 mod filetypes;
+mod font_style;
 mod theme;
 mod types;
 mod util;

src/theme.rs

@@ -4,28 +4,12 @@ use std::path::Path;
 use yaml_rust::yaml::YamlLoader;
 use yaml_rust::Yaml;
 
-use lazy_static::lazy_static;
-
 use crate::color::{Color, ColorMode, ColorType};
 use crate::error::{Result, VividError};
+use crate::font_style::FontStyle;
 use crate::types::CategoryRef;
 use crate::util::{load_yaml_file, transpose};
 
-lazy_static! {
-    static ref ANSI_STYLES: HashMap<&'static str, u8> = {
-        let mut m = HashMap::new();
-        m.insert("regular", 0);
-        m.insert("bold", 1);
-        m.insert("faint", 2);
-        m.insert("italic", 3);
-        m.insert("underline", 4);
-        m.insert("blink", 5);
-        m.insert("rapid-blink", 6);
-        m.insert("overline", 53);
-        m
-    };
-}
-
 #[derive(Debug)]
 pub struct Theme {
     colors: HashMap<String, Color>,
@@ -104,12 +88,7 @@ impl Theme {
         }
 
         if let Yaml::Hash(map) = item {
-            let font_style: &str = map
-                .get(&Yaml::String("font-style".into()))
-                .map(|s| s.as_str().expect("Color value should be a string"))
-                .unwrap_or("regular");
-
-            let font_style_ansi: &u8 = ANSI_STYLES.get(&font_style).unwrap(); // TODO
+            let font_style = FontStyle::from_yaml(map);
 
             let foreground = map
                 .get(&Yaml::String("foreground".into()))
@@ -123,13 +102,10 @@ impl Theme {
 
             let background = transpose(background.map(|fg| self.get_color(fg)))?;
 
-            let mut style: String = format!("{font_style}", font_style = *font_style_ansi,);
+            let mut style: String = format!("{font_style}");
             if let Some(foreground) = foreground {
                 let foreground_code = foreground.get_style(ColorType::Foreground, self.color_mode);
-                style.push_str(&format!(
-                    ";{foreground_code}",
-                    foreground_code = foreground_code
-                ));
+                style.push_str(&foreground_code);
             }
 
             if let Some(background) = background {