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