mirror of
https://github.com/neon-mmd/websurfx.git
synced 2024-12-22 20:38:22 -05:00
86 lines
3.8 KiB
Rust
86 lines
3.8 KiB
Rust
//! A build module of the application which minifies the project's css and js files on build which
|
|
//! helps reduce the initial page by loading the files faster.
|
|
|
|
#![forbid(unsafe_code, clippy::panic)]
|
|
#![deny(missing_docs, clippy::missing_docs_in_private_items, clippy::perf)]
|
|
#![warn(clippy::cognitive_complexity, rust_2018_idioms)]
|
|
|
|
// ------- Imports -------
|
|
use lightningcss::stylesheet::{MinifyOptions, ParserOptions, PrinterOptions, StyleSheet};
|
|
use minify_js::{minify, Session, TopLevelMode};
|
|
use std::{
|
|
fs::{read_dir, read_to_string, File, OpenOptions},
|
|
io::{Read, Write},
|
|
};
|
|
|
|
// ------- Constants -------
|
|
/// A constant for the path to the public/theme folder in the codebase.
|
|
const COMMON_STATIC_SOURCE_CODE_FOLDER: &str = "./public/static/";
|
|
/// A constant for the names of the folders located in the "/public/static/"
|
|
/// folder in the codebase which contains the css files to be minified.
|
|
const STYLE_FOLDERS: [&str; 2] = ["themes", "colorschemes"];
|
|
/// A constant for the environment variable name.
|
|
const PACKAGE_ENVIRONMENT_VARIABLE: &str = "PKG_ENV";
|
|
/// A constant for the `prod` value of the `pkg_env` environment variable.
|
|
const PRODUCTION_PKG_ENV_VARIABLE_VALUE: &str = "prod";
|
|
|
|
/// A main function which minifies both css and js files using `lightningcss` and `minify_js` when
|
|
/// the `PKG_ENV` environment and it is set to the value of `prod`.
|
|
///
|
|
/// # Error
|
|
///
|
|
/// This function returns the unit type when the minification process runs successfully otherwise
|
|
/// it returns a standard error.
|
|
fn main() -> Result<(), Box<dyn std::error::Error>> {
|
|
if let Ok(pkg_env_var) = std::env::var(PACKAGE_ENVIRONMENT_VARIABLE) {
|
|
if pkg_env_var.to_lowercase() == PRODUCTION_PKG_ENV_VARIABLE_VALUE {
|
|
// A for loop that loops over each file name containing in the `colorschemes` and `themes` folders
|
|
// and minifies it using the `lightningcss` minifier.
|
|
for folder_name in STYLE_FOLDERS {
|
|
for file in read_dir(format!("{COMMON_STATIC_SOURCE_CODE_FOLDER}{folder_name}/"))? {
|
|
let file_path = file?.path();
|
|
let source = read_to_string(file_path.clone())?;
|
|
|
|
let mut stylesheet = StyleSheet::parse(&source, ParserOptions::default())
|
|
.map_err(|err| format!("{err}\n{:?}", file_path.file_name().unwrap()))?;
|
|
|
|
stylesheet.minify(MinifyOptions::default())?;
|
|
let minified_css = stylesheet.to_css(PrinterOptions::default())?;
|
|
|
|
let mut old_css_file = OpenOptions::new()
|
|
.write(true)
|
|
.truncate(true)
|
|
.open(file_path)?;
|
|
old_css_file.write_all(minified_css.code.as_bytes())?;
|
|
old_css_file.flush()?;
|
|
}
|
|
}
|
|
|
|
// A for loop that loops over each file name containing in the `public/static` folder and minifies
|
|
// it using the `minify-js` minifier.
|
|
for file in read_dir(COMMON_STATIC_SOURCE_CODE_FOLDER)? {
|
|
let file_path = file?.path();
|
|
if file_path.is_file() {
|
|
let mut code = Vec::new();
|
|
let mut js_file = File::open(file_path.clone())?;
|
|
js_file.read_to_end(&mut code)?;
|
|
|
|
drop(js_file);
|
|
|
|
let mut out = Vec::new();
|
|
minify(&Session::new(), TopLevelMode::Global, &code, &mut out)
|
|
.map_err(|err| format!("{err}\n{:?}", file_path.file_name().unwrap()))?;
|
|
|
|
let mut old_js_file = OpenOptions::new()
|
|
.write(true)
|
|
.truncate(true)
|
|
.open(file_path)?;
|
|
old_js_file.write_all(&out)?;
|
|
old_js_file.flush()?;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
Ok(())
|
|
}
|