refraction/build.rs
2024-01-08 14:56:37 -05:00

91 lines
2.3 KiB
Rust

use std::path::Path;
use std::{env, fs};
use gray_matter::{engine, Matter};
include!("src/tags.rs");
/// generate the ChoiceParameter enum and tag data we will use in the `tag` command
#[allow(dead_code)]
fn main() {
let out_dir = env::var_os("OUT_DIR").unwrap();
let generated = Path::new(&out_dir).join("generated.rs");
let tag_files: Vec<String> = fs::read_dir(TAG_DIR)
.unwrap()
.map(|f| f.unwrap().file_name().to_string_lossy().to_string())
.collect();
let tags: Vec<Tag> = tag_files
.clone()
.into_iter()
.map(|name| {
let file_name = format!("{TAG_DIR}/{name}");
let file_content = fs::read_to_string(&file_name).unwrap();
let matter = Matter::<engine::YAML>::new();
let parsed = matter.parse(&file_content);
let content = parsed.content;
let data = parsed
.data
.unwrap()
.deserialize()
.unwrap_or_else(|e| {
// actually handling the error since this is the most likely thing to fail -getchoo
panic!(
"Failed to parse file {file_name}! Here's what it looked like:\n{content}\n\nReported Error:\n{e}\n",
)
});
Tag {
content,
file_name: name,
frontmatter: data,
}
})
.collect();
let formatted_names: Vec<String> = tags
.iter()
.map(|t| t.file_name.replace(".md", "").replace('-', "_"))
.collect();
let tag_choice = format!(
r#"
#[allow(non_camel_case_types, clippy::upper_case_acronyms)]
#[derive(Clone, Debug, poise::ChoiceParameter)]
pub enum TagChoice {{
{}
}}"#,
formatted_names.join(",\n")
);
let to_str = format!(
r#"
impl TagChoice {{
fn as_str(&self) -> &str {{
match &self {{
{}
}}
}}
}}
"#,
formatted_names
.iter()
.map(|n| {
let file_name = n.replace('_', "-") + ".md";
format!("Self::{n} => \"{file_name}\",")
})
.collect::<Vec<String>>()
.join("\n")
);
let contents = Vec::from([tag_choice, to_str]).join("\n\n");
fs::write(generated, contents).unwrap();
println!(
"cargo:rustc-env=TAGS={}",
// make sure we can deserialize with env! at runtime
serde_json::to_string(&tags).unwrap()
);
}