hex file support

src/palette.rs

@@ -31,8 +31,9 @@ impl Palette {
     /// todo result
     pub fn from_file(path: PathBuf) -> Self {
         match path.extension().unwrap().to_str().unwrap() {
-            "pal"  => Self::from_jasc(path),
             "gpl"  => Self::from_gpl(path),
+            "hex"  => Self::from_hex(path),
+            "pal"  => Self::from_jasc(path),
             "txt"  => Self::from_txt(path),
             "toml" => Self::from(
                 path.file_stem().as_ref().unwrap().to_str().unwrap(),
@@ -132,6 +133,26 @@ impl Palette {
             colours.join("\r\n")
         )
     }
+
+    /// simple file format. one hexadecimal colour per line
+    pub fn from_hex(path: PathBuf) -> Self {
+        let name = path.file_stem().unwrap().to_str().unwrap().into();
+
+        let colours = read_to_string(&path).unwrap().lines().map(|line|
+            Colour::from(line)
+        ).collect();
+
+        Self { name, colours }
+    }
+
+    /// simple file format. one hexadecimal colour per line
+    pub fn to_hex(&self) -> String {
+        let colours: Vec<String> = self.colours.iter().map(|colour|
+            colour.to_string().replace('#', "")
+        ).collect();
+
+        format!("{}\r\n", colours.join("\r\n"))
+    }
 }
 
 /// for toml purposes
@@ -225,6 +246,21 @@ mod test {
         assert_eq!(output, expected);
     }
 
+    #[test]
+    fn palette_from_hex() {
+        let path = PathBuf::from("src/test-resources/basic/palettes/soup11.hex");
+        let output = Palette::from_hex(path);
+        let expected = crate::mock::palette::soup11();
+        assert_eq!(output, expected);
+    }
+
+    #[test]
+    fn palette_to_hex() {
+        let output = crate::mock::palette::soup11().to_hex();
+        let expected = include_str!("test-resources/basic/palettes/soup11.hex");
+        assert_eq!(output, expected);
+    }
+
     #[test]
     fn palette_from_toml() {
         let output = Palette::from(

src/test-resources/basic/palettes/soup11.hex

@@ -0,0 +1,11 @@
+4f1e45
+963057
+d74459
+eb7060
+ffb383
+ffffff
+7fe3bb
+5cbbc4
+457ea3
+384276
+322451