From 422c9e0d80aa661b2b158f35572f38adebd2a9b7 Mon Sep 17 00:00:00 2001
From: Max Bradbury <max@tinybird.info>
Date: Sun, 16 May 2021 14:00:13 +0100
Subject: [PATCH] JASC palette support

---
 src/palette.rs                               | 92 +++++++++++++++++---
 src/test-resources/basic/palettes/soup11.pal | 14 +++
 2 files changed, 96 insertions(+), 10 deletions(-)
 create mode 100644 src/test-resources/basic/palettes/soup11.pal

diff --git a/src/palette.rs b/src/palette.rs
index 9793d3d..0d39604 100644
--- a/src/palette.rs
+++ b/src/palette.rs
@@ -1,8 +1,9 @@
+use std::fs::read_to_string;
+use std::path::PathBuf;
 use serde_derive::{Serialize, Deserialize};
-
 use crate::colour::Colour;
-use std::fs;
 
+/// todo enumerate original format
 #[derive(Debug, Eq, PartialEq, Serialize, Deserialize)]
 pub struct Palette {
     pub name: String,
@@ -27,11 +28,33 @@ impl Palette {
         }
     }
 
-    pub fn from_file(path: String) -> Self {
-        // todo get name without extension
-        let name = "blah";
-        let toml = fs::read_to_string(path).unwrap();
-        Self::from(name, &toml)
+    /// JASC .pal format (Paint Shop Pro)
+    pub fn from_jasc(path: PathBuf) -> Self {
+        let name = path.file_stem().unwrap().to_str().unwrap().into();
+        let mut colours = Vec::new();
+
+        for (index, line) in read_to_string(&path).unwrap().lines().enumerate() {
+            // ignore the first 3 lines
+            if index > 2 {
+                let mut values: Vec<u8> = Vec::new();
+
+                for value in line.split_whitespace() {
+                    values.push(value.parse().unwrap());
+                }
+
+                colours.push(Colour::from(values));
+            }
+        }
+
+        Palette { name, colours }
+    }
+
+    pub fn to_jasc(&self) -> String {
+        let colours: Vec<String> = self.colours.iter().map(|colour|
+            format!("{} {} {}", colour.red, colour.green, colour.blue)
+        ).collect();
+
+        format!("JASC-PAL\r\n0100\r\n{}\r\n{}\r\n", self.colours.len(), colours.join("\r\n"))
     }
 }
 
@@ -58,10 +81,59 @@ impl IntermediatePalettes {
 
 #[cfg(test)]
 mod test {
-    use crate::Palette;
+    use std::path::PathBuf;
+    use crate::{Colour, Palette};
 
     #[test]
-    fn test_palette_from_toml() {
+    fn palette_from_jasc() {
+        let path = PathBuf::from("src/test-resources/basic/palettes/soup11.pal");
+        let output = Palette::from_jasc(path);
+
+        let expected = Palette {
+            name: "soup11".into(),
+            colours: vec![
+                Colour { red: 79, green: 30, blue: 69 },
+                Colour { red: 150, green: 48, blue: 87 },
+                Colour { red: 215, green: 68, blue: 89 },
+                Colour { red: 235, green: 112, blue: 96 },
+                Colour { red: 255, green: 179, blue: 131 },
+                Colour { red: 255, green: 255, blue: 255 },
+                Colour { red: 127, green: 227, blue: 187 },
+                Colour { red: 92, green: 187, blue: 196 },
+                Colour { red: 69, green: 126, blue: 163 },
+                Colour { red: 56, green: 66, blue: 118 },
+                Colour { red: 50, green: 36, blue: 81 }
+            ]
+        };
+
+        assert_eq!(output, expected);
+    }
+
+    #[test]
+    fn palette_to_jasc() {
+        let output = Palette {
+            name: "soup11".into(),
+            colours: vec![
+                Colour { red: 79, green: 30, blue: 69 },
+                Colour { red: 150, green: 48, blue: 87 },
+                Colour { red: 215, green: 68, blue: 89 },
+                Colour { red: 235, green: 112, blue: 96 },
+                Colour { red: 255, green: 179, blue: 131 },
+                Colour { red: 255, green: 255, blue: 255 },
+                Colour { red: 127, green: 227, blue: 187 },
+                Colour { red: 92, green: 187, blue: 196 },
+                Colour { red: 69, green: 126, blue: 163 },
+                Colour { red: 56, green: 66, blue: 118 },
+                Colour { red: 50, green: 36, blue: 81 }
+            ]
+        }.to_jasc();
+
+        let expected = include_str!("test-resources/basic/palettes/soup11.pal");
+        assert_eq!(output, expected);
+    }
+
+    #[test]
+    fn palette_from_toml() {
         let output = Palette::from(
             "blueprint",
             include_str!("test-resources/basic/palettes/blueprint.toml")
@@ -71,7 +143,7 @@ mod test {
     }
 
     #[test]
-    fn test_palette_to_toml() {
+    fn palette_to_toml() {
         let intermediate = crate::mock::palette::intermediate();
         let output = toml::to_string(&intermediate).unwrap();
         let expected = include_str!("test-resources/basic/palettes/blueprint.toml");
diff --git a/src/test-resources/basic/palettes/soup11.pal b/src/test-resources/basic/palettes/soup11.pal
new file mode 100644
index 0000000..71f883a
--- /dev/null
+++ b/src/test-resources/basic/palettes/soup11.pal
@@ -0,0 +1,14 @@
+JASC-PAL
+0100
+11
+79 30 69
+150 48 87
+215 68 89
+235 112 96
+255 179 131
+255 255 255
+127 227 187
+92 187 196
+69 126 163
+56 66 118
+50 36 81