Add improved CLI (written in Rust)

7 files changed, 1073 insertions, 13 deletions

diff --git a/hitomezashi_cli/.gitignore b/hitomezashi_cli/.gitignore
new file mode 100644
index 0000000..b83d222
--- /dev/null
+++ b/hitomezashi_cli/.gitignore
@@ -0,0 +1 @@
+/target/
diff --git a/hitomezashi_cli/Cargo.lock b/hitomezashi_cli/Cargo.lock
new file mode 100644
index 0000000..59b169f
--- /dev/null
+++ b/hitomezashi_cli/Cargo.lock
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diff --git a/hitomezashi_cli/Cargo.toml b/hitomezashi_cli/Cargo.toml
new file mode 100644
index 0000000..a95192f
--- /dev/null
+++ b/hitomezashi_cli/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "hitomezashi_cli"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bitvec = "1.0.1"
+clap = { version = "4.3.0", features = ["derive"] }
+csscolorparser = "0.6.2"
+image = "0.24.6"
+libhitomezashi = { version = "0.1.0", path = "../libhitomezashi" }
diff --git a/hitomezashi_cli/src/main.rs b/hitomezashi_cli/src/main.rs
new file mode 100644
index 0000000..3f27a72
--- /dev/null
+++ b/hitomezashi_cli/src/main.rs
@@ -0,0 +1,69 @@
+use bitvec::prelude::*;
+use clap::Parser;
+use libhitomezashi as hitomezashi;
+use std::process::ExitCode;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about)]
+struct Args {
+    #[arg(short = 'x', long, value_parser = validate_xy_pattern)]
+    x_pattern: BitVec,
+    #[arg(short = 'y', long, value_parser = validate_xy_pattern)]
+    y_pattern: BitVec,
+    #[arg(short = 'g', long)]
+    gap: usize,
+    #[arg(short = 'l', long)]
+    line_thickness: usize,
+    #[arg(short = 'f', long, value_parser = parse_rgb_str)]
+    foreground_colour: image::Rgb<u8>,
+    #[arg(short = 'b', long, value_parser = parse_rgb_str)]
+    background_colour: image::Rgb<u8>,
+    #[arg(short = 'o', long)]
+    output_path: String,
+}
+
+fn validate_xy_pattern(pattern_raw: &str) -> Result<BitVec, String> {
+    let mut result = BitVec::new();
+    for ch in pattern_raw.chars() {
+        if ch == '1' {
+            result.push(true);
+        } else if ch == '0' {
+            result.push(false);
+        } else {
+            return Err(String::from("must consist of only 0 and 1"));
+        }
+    }
+    Ok(result)
+}
+
+fn parse_rgb_str(rgb_str: &str) -> Result<image::Rgb<u8>, String> {
+    let rgb: csscolorparser::Color = match csscolorparser::parse(rgb_str) {
+        Ok(rgb) => rgb,
+        Err(e) => return Err(e.to_string())
+    };
+    Ok(image::Rgb::from([(rgb.r * u8::MAX as f64) as u8, (rgb.g * u8::MAX as f64) as u8, (rgb.b * u8::MAX as f64) as u8]))
+}
+
+fn main() -> ExitCode {
+    let args = Args::parse();
+
+    let pattern = hitomezashi::get_hitomezashi_pattern(
+        args.x_pattern,
+        args.y_pattern,
+        args.gap,
+        args.line_thickness,
+    );
+    let mut image = image::RgbImage::new(pattern.width as u32, pattern.height as u32);
+    for x in 0..pattern.width {
+        for y in 0..pattern.height {
+            image.put_pixel(x as u32, y as u32, if pattern[x][y] {args.foreground_colour} else {args.background_colour})
+        }
+    }
+    match image.save_with_format(&args.output_path, image::ImageFormat::Png) {
+        Ok(_) => ExitCode::SUCCESS,
+        Err(e) => {
+            eprintln!("error: failed to save output image to {}: {}", args.output_path, e);
+            ExitCode::FAILURE
+        }
+    }
+}
diff --git a/libhitomezashi/.gitignore b/libhitomezashi/.gitignore
index 4fffb2f..e9e2199 100644
--- a/libhitomezashi/.gitignore
+++ b/libhitomezashi/.gitignore
@@ -1,2 +1,2 @@
-/target
+/target/
 /Cargo.lock
diff --git a/libhitomezashi/src/lib.rs b/libhitomezashi/src/lib.rs
index b07057a..c2f302e 100644
--- a/libhitomezashi/src/lib.rs
+++ b/libhitomezashi/src/lib.rs
@@ -1,5 +1,5 @@
 mod pixel_buffer;
-pub use bitvec::vec::BitVec;
+use bitvec::prelude::*;
 use pixel_buffer::PixelBuffer;
 
 pub fn get_hitomezashi_pattern(
@@ -52,12 +52,10 @@ mod tests {
 
     #[test]
     fn test() {
-        let mut x_pattern = BitVec::new();
-        x_pattern.resize(40, false);
-        x_pattern.set(1, true);
-        let mut y_pattern = BitVec::new();
-        y_pattern.resize(40, false);
-        y_pattern.set(1, true);
-        println!("{}", get_hitomezashi_pattern(x_pattern, y_pattern, 3, 1));
+        let x_pattern = bitvec![1, 1, 0, 1, 1, 1];
+        let y_pattern = bitvec![0, 1, 1, 0, 0, 0];
+        let result = format!("{}", get_hitomezashi_pattern(x_pattern, y_pattern, 3, 1));
+        println!("{}", result);
+        assert!(result == "███   ███   ███   \n      █           \n      █           \n█  ████  ████  ███\n█  █     █  █  █  \n█  █     █  █  █  \n   ████  ████  ███\n      █           \n      █           \n████  ████  ████  \n█  █     █  █  █  \n█  █     █  █  █  \n████  ████  ████  \n      █           \n      █           \n████  ████  ████  \n█  █     █  █  █  \n█  █     █  █  █  \n")
     }
 }
diff --git a/libhitomezashi/src/pixel_buffer.rs b/libhitomezashi/src/pixel_buffer.rs
index b151906..9b27059 100644
--- a/libhitomezashi/src/pixel_buffer.rs
+++ b/libhitomezashi/src/pixel_buffer.rs
@@ -4,7 +4,7 @@ use std::ops::{Index, IndexMut};
 
 /// 2D buffer of monochrome (white/black i.e. true/false) pixels
 pub struct PixelBuffer {
-    buffer: BitVec,
+    pub buffer: BitVec,
     pub width: usize,
     pub height: usize,
 }
@@ -47,7 +47,7 @@ impl fmt::Display for PixelBuffer {
         let mut result = String::new();
         for y in 0..self.height {
             for x in 0..self.width {
-                result.push(if self[x][y] { '1' } else { '0' })
+                result.push(if self[x][y] { '█' } else { ' ' })
             }
             result.push('\n')
         }
@@ -81,13 +81,13 @@ mod tests {
         let mut pixel_buffer = PixelBuffer::new(3, 3);
         pixel_buffer[1].set(1, true);
         let result = format!("{}", pixel_buffer);
-        assert!(result == "000\n010\n000\n");
+        assert!(result == "   \n █ \n   \n");
     }
     #[test]
     fn rect() {
         let mut pixel_buffer = PixelBuffer::new(5, 3);
         pixel_buffer.fill_rect(1, 0, 2, 2);
         let result = format!("{}", pixel_buffer);
-        assert!(result == "01100\n01100\n00000\n");
+        assert!(result == " ██  \n ██  \n     \n");
     }
 }