From bffc9310f791283e06e7ae1377b59cb11f65a46e Mon Sep 17 00:00:00 2001
From: Louis Capitanchik <contact@louiscap.co>
Date: Tue, 2 Aug 2022 01:17:28 +0100
Subject: [PATCH] Rough first version, implement 'wrap' action
---
.gitignore | 2 +
Cargo.lock | 706 ++++++++++++++++++++++++++++++++++++++++++++
Cargo.toml | 15 +
examples/flit.toml | 14 +
examples/index.html | 53 ++++
rustfmt.toml | 4 +
src/main.rs | 138 +++++++++
7 files changed, 932 insertions(+)
create mode 100644 .gitignore
create mode 100644 Cargo.lock
create mode 100644 Cargo.toml
create mode 100644 examples/flit.toml
create mode 100644 examples/index.html
create mode 100644 rustfmt.toml
create mode 100644 src/main.rs
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6b39d31
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
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\ No newline at end of file
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..9f7539b
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+ "unicode-ident",
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+]
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+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..a4bb06d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,15 @@
+[package]
+name = "flit"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.59"
+clap = { version = "3.2.16", features = ["derive"] }
+glob = "0.3.0"
+lol_html = "0.3.1"
+serde = { version = "1.0.140", features = ["derive"] }
+thiserror = "1.0.31"
+toml = "0.5.9"
diff --git a/examples/flit.toml b/examples/flit.toml
new file mode 100644
index 0000000..e4111f6
--- /dev/null
+++ b/examples/flit.toml
@@ -0,0 +1,14 @@
+["script[type='module']"]
+action = "wrap"
+template ='''
+<div id="root">
+ <button id="start_game">Start Game</button>
+</div>
+<script>
+let content = `{{{}}}`;
+document.addEventListener('DOMContentLoaded', () => {
+ document.getElementById('start_game').addEventListener('click', function() {
+ this.innerHTML = content
+ });
+});
+</script>'''
\ No newline at end of file
diff --git a/examples/index.html b/examples/index.html
new file mode 100644
index 0000000..3403443
--- /dev/null
+++ b/examples/index.html
@@ -0,0 +1,53 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+ <meta charset="utf-8">
+ <title>Flit Example HTML</title>
+
+ <style>
+ html, body {
+ margin: 0;
+ padding: 0;
+ }
+ </style>
+
+ <link rel="stylesheet" href="styles/404.css">
+</head>
+<body>
+
+<main>
+ <div class="container">
+ <div class="row">
+ <div class="col-md-12">
+ <div id="error">
+ <h1>Oops!</h1>
+ <h2>404 Not Found</h2>
+ <div class="error-details">
+ Sorry, an error has occured, Requested page not found!
+ </div>
+ <div class="error-actions">
+ <a href="/" class="btn btn-primary btn-lg">
+ <span class="glyphicon glyphicon-home"></span>
+ Take Me Home
+ </a>
+ <a href="/" class="btn btn-default btn-lg">
+ <span class="glyphicon glyphicon-envelope"></span>
+ Contact Support
+ </a>
+ </div>
+ </div>
+ </div>
+ </div>
+ </div>
+</main>
+
+<script>
+ console.log("This is a regular script tag")
+</script>
+
+<script type="module">
+ console.log("This is a module")
+</script>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/rustfmt.toml b/rustfmt.toml
new file mode 100644
index 0000000..ddac46a
--- /dev/null
+++ b/rustfmt.toml
@@ -0,0 +1,4 @@
+hard_tabs = true
+group_imports = "StdExternalCrate"
+use_field_init_shorthand = true
+use_try_shorthand = true
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..181edc7
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,138 @@
+use clap::Parser;
+use lol_html::html_content::ContentType;
+use lol_html::{element, rewrite_str, text, RewriteStrSettings};
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::fs::File;
+use std::io::Read;
+use std::sync::{Arc, Mutex};
+use thiserror::Error;
+
+/// Pipelined HTML ops
+#[derive(Clone, Debug, Parser)]
+#[clap(author, version, about)]
+pub struct CliArgs {
+ /// Path to the input html file
+ #[clap(short, long, value_parser)]
+ input: String,
+ /// Path to write the transformed html to. If not present and --inline is not specified, the output will be written to stdout
+ #[clap(short, long, value_parser)]
+ output: Option<String>,
+ /// Path to the file defining operations to perform on the html
+ #[clap(short = 'f', long, value_parser)]
+ opfile: String,
+ /// Write the transformed html back to the original file. This will cause --output to be ignored
+ #[clap(short = 'l', long, value_parser, default_value_t = false)]
+ inline: bool,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(tag = "action")]
+pub enum ConfigEntry {
+ #[serde(rename = "wrap")]
+ Wrap { template: String },
+}
+
+pub type ConfigFile = HashMap<String, ConfigEntry>;
+
+#[derive(Error, Debug)]
+pub enum AppError {
+ #[error("Failed to open file: {0}")]
+ FailedToOpen(String),
+ #[error("Failed to read file: {0}")]
+ FailedToRead(String),
+ #[error("{0}")]
+ IoError(#[from] std::io::Error),
+ #[error("Opfile was not valid: {0}")]
+ InvalidOpfile(toml::de::Error),
+ #[error("Failed to match selector {0}")]
+ SelectorFailed(String),
+}
+
+pub type AppResult<T> = Result<T, AppError>;
+
+pub fn read_and_drop(path: &String) -> AppResult<String> {
+ let mut file_handle = File::open(path).map_err(|_| AppError::FailedToOpen(path.clone()))?;
+ let length = file_handle.metadata()?.len();
+ let mut file_buffer = String::with_capacity(length as usize);
+ file_handle
+ .read_to_string(&mut file_buffer)
+ .map_err(|_| AppError::FailedToRead(path.clone()))?;
+
+ Ok(file_buffer)
+}
+
+fn main() -> AppResult<()> {
+ let args: CliArgs = CliArgs::parse();
+ let input_data = read_and_drop(&args.input)?;
+ let opfile_data = read_and_drop(&args.opfile)?;
+
+ let ops: ConfigFile = toml::from_str(opfile_data.as_str()).map_err(AppError::InvalidOpfile)?;
+
+ let html = rewrite_str(
+ input_data.as_str(),
+ RewriteStrSettings {
+ element_content_handlers: ops
+ .into_iter()
+ .flat_map(|(selector, op)| match op {
+ ConfigEntry::Wrap { template } => {
+ let el_buffer = Arc::new(Mutex::new(String::new()));
+ let txt_buffer = el_buffer.clone();
+
+ vec![
+ element!(selector, move |e| {
+ el_buffer.lock().unwrap().clear();
+
+ let attr_list = e
+ .attributes()
+ .iter()
+ .map(|a| format!(r#"{}="{}""#, a.name(), a.value()))
+ .collect::<Vec<String>>()
+ .join(" ");
+
+ el_buffer.lock().unwrap().push_str(&format!(
+ "<{} {}>",
+ e.tag_name(),
+ attr_list
+ ));
+
+ e.remove();
+ let inner_buffer = el_buffer.clone();
+ let inner_template = template.clone();
+ e.on_end_tag(move |end_tag| {
+ inner_buffer
+ .lock()
+ .unwrap()
+ .push_str(&format!("</{}>", end_tag.name()));
+ end_tag.after(
+ &inner_template.replace(
+ "{{{}}}",
+ inner_buffer.lock().unwrap().as_str(),
+ ),
+ ContentType::Html,
+ );
+ end_tag.remove();
+ Ok(())
+ })
+ .expect("Failed to handle end tag");
+ Ok(())
+ }),
+ text!(selector, move |t| {
+ txt_buffer.lock().unwrap().push_str(t.as_str());
+ t.remove();
+ Ok(())
+ }),
+ ]
+ }
+ })
+ .collect(),
+ document_content_handlers: vec![],
+ strict: true,
+ enable_esi_tags: true,
+ },
+ );
+
+ println!("{}", html.unwrap());
+
+ Ok(())
+}
--
GitLab