191051b644
* Finished the Markdown Parser Example for Wasmtime * Made requested changes * Tiny change to explanation of `--dir` CLI arg * Add `bash` annotations to shell script code blocks * Trying to fix the markdown example bug * Figured out rustdoc, and what needed to be done * Made requested changes Co-authored-by: Till Schneidereit <till@tillschneidereit.net>
47 lines
1.3 KiB
Rust
47 lines
1.3 KiB
Rust
// Import our CLI parsing libraries (And PathBuf for reading paths)
|
|
extern crate structopt;
|
|
|
|
use structopt::StructOpt;
|
|
use std::path::PathBuf;
|
|
|
|
// Import our markdown parser library, crate
|
|
extern crate pulldown_cmark;
|
|
|
|
use pulldown_cmark::{html, Parser};
|
|
|
|
// Import from the standard library, to allow reading from the file system
|
|
use std::fs;
|
|
|
|
// Define our CLI options using structopt
|
|
#[derive(StructOpt)]
|
|
#[structopt(name = "rust_wasi_markdown_parser", about = "Markdown to HTML renderer CLI, written with Rust & WASI")]
|
|
pub struct Options {
|
|
/// The markdown file to render
|
|
#[structopt(parse(from_os_str))]
|
|
filename: PathBuf,
|
|
}
|
|
|
|
// Our entrypoint into our WASI module
|
|
fn main() {
|
|
|
|
// Get the passed CLI options
|
|
let options = Options::from_args();
|
|
|
|
// Read the markdown file into a string
|
|
let contents = fs::read_to_string(options.filename)
|
|
.expect("Something went wrong reading the file");
|
|
|
|
// Run our parsing function to get back an HTML string
|
|
let result = render_markdown(contents);
|
|
|
|
// Print out the resulting HTML to standard out
|
|
println!("{}", result);
|
|
}
|
|
|
|
pub fn render_markdown(markdown: String) -> String {
|
|
let mut html_buf = String::new();
|
|
let parser = Parser::new(&markdown[..]);
|
|
html::push_html(&mut html_buf, parser);
|
|
html_buf
|
|
}
|