98 lines
3.2 KiB
Rust
98 lines
3.2 KiB
Rust
use std::fs::File;
|
|
use std::io::{stdin, stdout, Read, Write};
|
|
|
|
use structopt::StructOpt;
|
|
|
|
use minify_html::{minify, Cfg};
|
|
|
|
#[derive(StructOpt)]
|
|
#[structopt(
|
|
name = "minify-html",
|
|
about = "Extremely fast and smart HTML + JS + CSS minifier"
|
|
)]
|
|
// WARNING: Keep descriptions in sync with Cfg.
|
|
struct Cli {
|
|
/// File to minify; omit for stdin.
|
|
#[structopt(parse(from_os_str))]
|
|
input: Option<std::path::PathBuf>,
|
|
/// Output destination; omit for stdout.
|
|
#[structopt(short, long, parse(from_os_str))]
|
|
output: Option<std::path::PathBuf>,
|
|
/// Minify JS in `<script>` tags that have a valid or no `type` attribute value.
|
|
#[structopt(long)]
|
|
minify_js: bool,
|
|
/// Minify CSS in `<style>` tags and `style` attributes.
|
|
#[structopt(long)]
|
|
minify_css: bool,
|
|
/// Ensure all unquoted attribute values in the output do not contain any characters prohibited by the WHATWG specification.
|
|
#[structopt(long)]
|
|
ensure_spec_compliant_unquoted_attribute_values: bool,
|
|
/// Do not omit closing tags when possible.
|
|
#[structopt(long)]
|
|
keep_closing_tags: bool,
|
|
/// Do not omit `<html>` and `<head>` opening tags when they don't have attributes.
|
|
#[structopt(long)]
|
|
keep_html_and_head_opening_tags: bool,
|
|
/// Keep spaces between attributes when possible to conform to HTML standards.
|
|
#[structopt(long)]
|
|
keep_spaces_between_attributes: bool,
|
|
/// Keep all comments.
|
|
#[structopt(long)]
|
|
keep_comments: bool,
|
|
/// Remove all bangs.
|
|
#[structopt(long)]
|
|
remove_bangs: bool,
|
|
/// Remove all processing_instructions.
|
|
#[structopt(long)]
|
|
remove_processing_instructions: bool,
|
|
}
|
|
|
|
macro_rules! io_expect {
|
|
($expr:expr, $msg:literal) => {
|
|
match $expr {
|
|
Ok(r) => r,
|
|
Err(e) => {
|
|
eprintln!("Error: {}", $msg);
|
|
eprintln!("{}", e);
|
|
return;
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
fn main() {
|
|
let args = Cli::from_args();
|
|
let mut src_code = Vec::<u8>::new();
|
|
let mut src_file: Box<dyn Read> = match args.input {
|
|
Some(p) => Box::new(io_expect!(File::open(p), "could not open source file")),
|
|
None => Box::new(stdin()),
|
|
};
|
|
io_expect!(
|
|
src_file.read_to_end(&mut src_code),
|
|
"could not load source code"
|
|
);
|
|
let out_code = minify(
|
|
&src_code,
|
|
&Cfg {
|
|
ensure_spec_compliant_unquoted_attribute_values: args
|
|
.ensure_spec_compliant_unquoted_attribute_values,
|
|
keep_closing_tags: args.keep_closing_tags,
|
|
keep_comments: args.keep_comments,
|
|
keep_html_and_head_opening_tags: args.keep_html_and_head_opening_tags,
|
|
keep_spaces_between_attributes: args.keep_spaces_between_attributes,
|
|
minify_css: args.minify_css,
|
|
minify_js: args.minify_js,
|
|
remove_bangs: args.remove_bangs,
|
|
remove_processing_instructions: args.remove_processing_instructions,
|
|
},
|
|
);
|
|
let mut out_file: Box<dyn Write> = match args.output {
|
|
Some(p) => Box::new(io_expect!(File::create(p), "could not open output file")),
|
|
None => Box::new(stdout()),
|
|
};
|
|
io_expect!(
|
|
out_file.write_all(&out_code),
|
|
"could not save minified code"
|
|
);
|
|
}
|