Implement build script for generating the manual

1 files changed, 45 insertions, 0 deletions

diff --git a/build.rs b/build.rs
new file mode 100644
index 0000000..990d2b5
--- /dev/null
+++ b/build.rs
@@ -0,0 +1,45 @@
+/*
+    hitomezashi-rs  Generates classical colored Hitomezashi stitch patterns
+    Copyright (C) 2024  Nicholas Johnson
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
+use clap::CommandFactory;
+use std::env;
+use std::path::PathBuf;
+
+include!("src/cli.rs");
+
+fn main() -> std::io::Result<()> {
+    let out_dir = match env::var_os("OUT_DIR") {
+        None => return Ok(()),
+        Some(out_dir) => out_dir,
+    };
+
+    let out_path = PathBuf::from(out_dir);
+    let mut path = out_path.ancestors().nth(4).unwrap().to_owned();
+    path.push("assets");
+    std::fs::create_dir_all(&path).unwrap();
+
+    let cmd = Cli::command();
+
+    let man = clap_mangen::Man::new(cmd);
+    let mut buffer: Vec<u8> = Default::default();
+    man.render(&mut buffer)?;
+
+    std::fs::write(path.join("hitomezashi-rs.1"), buffer)?;
+
+    Ok(())
+}