//! The `wolfree_sed_in_place` crate provides a function for performing in-place replacements of patterns in multiple files using regular expressions.
//! It allows you to recursively process all files within a specified directory and replace occurrences of a given pattern with a specified replacement string.
#![allow(clippy::blanket_clippy_restriction_lints)]
#![allow(clippy::exit)]
#![allow(clippy::print_stderr)]
#![allow(clippy::implicit_return)]
/* SPDX-License-Identifier: AGPL-3.0-or-later
* This file is part of Wolfree.
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
*/
use regex::Regex;
use std::fs;
use walkdir::WalkDir;
/// Perform in-place replacements on files in a given directory, using regular expressions.
///
/// This function walks through all the files in the specified `directory_path`,
/// filters out directories, and applies a regular expression-based replacement
/// on the contents of each file.
///
/// # Arguments
///
/// * `directory_path`: A string slice representing the path of the directory to traverse.
/// * `pattern`: A string slice containing the regular expression pattern to search for.
/// * `replacement`: A string slice representing the replacement for each matched pattern.
///
/// # Examples
///
/// ```rust
/// // Replace a specific pattern in the file contents in the "./data/" directory.
/// wolfree_sed_in_place("./data/", r"\bFoo\b", "Bar");
/// ```
///
/// This example replaces all occurrences of the word "Foo" with "Bar" in the files inside the "data" directory.
fn wolfree_sed_in_place(directory_path: &str, pattern: &str, replacement: &str) {
// Compile the regular expression pattern
let regex = match Regex::new(pattern) {
Ok(re) => re,
Err(err) => {
eprintln!("Error: {err}",);
std::process::exit(1);
}
};
// Create a directory walker and filter out non-file entries
let walker = WalkDir::new(directory_path)
.into_iter()
.filter_map(Result::ok)
.filter(|entry| !entry.file_type().is_dir());
// Process each file in the directory
for entry in walker {
let file_path = entry.path();
// Read the file's contents into a string
let file_contents = match fs::read_to_string(file_path) {
Ok(contents) => contents,
Err(err) => {
eprintln!("Error: {err}",);
std::process::exit(1);
}
};
// Perform the regex replacement on the file's contents
let modified_contents = regex.replace(&file_contents, replacement);
let modified_contents_as_ref = modified_contents.as_ref();
// Write the modified contents back to the file, overwriting its previous contents
match fs::write(file_path, modified_contents_as_ref) {
Ok(_) => (),
Err(err) => {
eprintln!("Error: {err}",);
std::process::exit(1);
}
};
}
}
/// Entry point of the program.
/// Demonstrates using `wolfree_sed_in_place` function to perform in-place replacements on files in specific directories.
fn main() {
wolfree_sed_in_place(
"./docusaurus/build/input/",
"</head><body>",
include_str!("include_str.html"),
);
wolfree_sed_in_place(
"./docusaurus/build/_next/static/chunks/",
r"try(.{0,100}?)generateEncodedJSONFromValue(.*?)unescapeForUrl(.*?)catch(.*?)\{}",
include_str!("include_str.tsx"),
);
// console error:
// _app-daabd76ef4fe402d.js:5
// WebSocket connection to 'wss://localhost/n/v1/api/fetcher/results' failed:
// startWebsocket @ _app-daabd76ef4fe402d.js:5
// send @ _app-daabd76ef4fe402d.js:5
// sendMessage @ 1695-ae743311a23f8eb5.js:1
// newQuery @ 1695-ae743311a23f8eb5.js:78
// newQuery @ 1695-ae743311a23f8eb5.js:78
// fix:
// Override the hostname in the minified JavaScript source code.
wolfree_sed_in_place(
"./docusaurus/build/_next/static/chunks/pages/",
"window.location.hostname",
"'www.wolframalpha.com'",
);
}
// regex101: build, test, and debug regex
// https://regex101.com/
