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--git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..1c4cc93 --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,14 @@ +[package] +name = "polyglot-zipper" +version = "1.0.0" +edition = "2021" + +[dependencies] +anyhow = "1.0.79" +clap = { version = "4.5.0", features = ["derive"] } +iconv = "0.1.1" +zip = "0.6.6" + +[[bin]] +name = "polyzip" +path = "src/main.rs" \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..b8ffb51 --- /dev/null +++ b/LICENSE @@ -0,0 +1,21 @@ +MIT License + +Copyright (c) 2024 h7x4 + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all +copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE +SOFTWARE. \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..2d98410 --- /dev/null +++ b/README.md @@ -0,0 +1,6 @@ +# polyglot-zip + +This is a small utility that uses [libiconv](https://www.gnu.org/software/libiconv/) to convert filenames within a zipfile. + +It can be useful if a zip has been created on a system that did not use UTF-8 for its filenames. + diff --git a/flake.lock b/flake.lock new file mode 100644 index 0000000..a9185f0 --- /dev/null +++ b/flake.lock @@ -0,0 +1,27 @@ +{ + "nodes": { + "nixpkgs": { + "locked": { + "lastModified": 1707546158, + "narHash": "sha256-nYYJTpzfPMDxI8mzhQsYjIUX+grorqjKEU9Np6Xwy/0=", + "owner": "NixOS", + "repo": "nixpkgs", + "rev": "d934204a0f8d9198e1e4515dd6fec76a139c87f0", + "type": "github" + }, + "original": { + "owner": "NixOS", + "ref": "nixos-unstable", + "repo": "nixpkgs", + "type": "github" + } + }, + "root": { + "inputs": { + "nixpkgs": "nixpkgs" + } + } + }, + "root": "root", + "version": 7 +} diff --git a/flake.nix b/flake.nix new file mode 100644 index 0000000..04da095 --- /dev/null +++ b/flake.nix @@ -0,0 +1,42 @@ +{ + inputs = { + nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; + }; + + outputs = { self, nixpkgs }: let + supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ]; + forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f system nixpkgs.legacyPackages.${system}); + in { + devShells = forAllSystems (system: pkgs: { + default = let + rustPlatform = pkgs.rust.packages.stable.rustPlatform; + in pkgs.mkShell { + packages = with pkgs; [ + cargo + clippy + rust-analyzer + rustc + rustfmt + ]; + RUST_SRC_PATH = "${rustPlatform.rustLibSrc}"; + }; + }); + + packages = (forAllSystems (system: pkgs: { + default = pkgs.rustPlatform.buildRustPackage rec { + pname = "polyglot-zip"; + version = (pkgs.lib.importTOML ./Cargo.toml).package.version; + src = ./.; + + cargoSha256 = "sha256-3oHEH6DlooWg0sQ+oIvsYoU6FAs7gP9PRwv1xJjGDYA="; + + meta = with pkgs.lib; { + description = "A tool to convert and extract zip files with non-UTF-8 contents"; + homepage = "https://github.com/h7x4/polyglot-zip"; + license = licenses.mit; + platforms = supportedSystems; + }; + }; + })); + }; +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..816387a --- /dev/null +++ b/src/main.rs @@ -0,0 +1,128 @@ +use anyhow::Context; +use clap::{Parser, Subcommand}; +use iconv::decode; +use std::{fs::File, path::PathBuf}; +use zip::{ZipArchive, ZipWriter}; + +/// A small utility to convert the file names in a zip file from one encoding to another. +/// +/// The input encoding is specified as a string, which is passed to the iconv library. +/// The output encoding is always UTF-8. +#[derive(Parser)] +#[clap(name = "polyzip", version, about)] +struct Args { + /// The encoding of the file names in the zip file. + /// A list of supported encodings can be found at https://www.gnu.org/software/libiconv/ + #[arg(index = 1)] + input_encoding: String, + + #[command(subcommand)] + subcommand: Command, +} + +#[derive(Subcommand)] +enum Command { + /// List the converted filenames in the zip file + List { + /// A path to a zip file + #[arg(index = 1)] + file: PathBuf, + }, + + /// Convert the filenames in the zip file and write the result to a new file + Convert { + /// A path to a zip file + #[arg(index = 1)] + file: PathBuf, + + /// Where to put the new zip file + #[arg(short, long)] + output: PathBuf, + }, + + /// Convert the filenames in the zip file in place + ConvertInPlace { + /// A path to a zip file + #[arg(index = 1)] + file: PathBuf, + + /// Whether to create a backup of the original file, with a .bak extension + #[arg(short, long, default_value = "true")] + create_backup: bool, + }, +} + +fn main() -> anyhow::Result<()> { + let args: Args = Args::parse(); + + match args.subcommand { + Command::List { file } => { + let zipfile = File::open(&file).context(format!("Failed to open {:?}", file))?; + list_zip_contents(zipfile, &args.input_encoding)?; + } + Command::Convert { file, output } => { + let zipfile = File::open(&file).context(format!("Failed to open {:?}", file))?; + let new_zipfile = + File::create(&output).context(format!("Failed to create {:?}", output))?; + unzip(zipfile, new_zipfile, &args.input_encoding)?; + } + Command::ConvertInPlace { + file, + create_backup, + } => { + let backup_path = &file.with_extension( + file.extension() + .and_then(|ext| ext.to_str()) + .unwrap_or("") + .to_string() + + ".bak", + ); + std::fs::rename(&file, backup_path)?; + + let zipfile = File::open(&file).context(format!("Failed to open {:?}", file))?; + let new_zipfile = + File::create(&file).context(format!("Failed to create {:?}", file))?; + if let Err(e) = unzip(zipfile, new_zipfile, &args.input_encoding) { + std::fs::rename(backup_path, file)?; + anyhow::bail!(e) + } else if !create_backup { + std::fs::remove_file(backup_path)?; + } + } + } + + Ok(()) +} + +fn list_zip_contents(zipfile: File, input_encoding: &str) -> anyhow::Result<()> { + let mut zip = ZipArchive::new(zipfile)?; + + for i in 0..zip.len() { + let file = zip.by_index(i)?; + let name = file.name_raw(); + match decode(name, input_encoding) { + Ok(converted_name) => { + println!("{} -> {}", String::from_utf8_lossy(name), converted_name) + } + Err(e) => eprintln!("{}: {}", String::from_utf8_lossy(name), e), + } + } + + Ok(()) +} + +fn unzip(zipfile: File, new_zipfile: File, input_encoding: &str) -> anyhow::Result<()> { + let mut zip = ZipArchive::new(zipfile)?; + let mut builder = ZipWriter::new(new_zipfile); + + for i in 0..zip.len() { + let file = zip.by_index(i)?; + let name = file.name_raw().to_vec(); + let converted_name = decode(&name, input_encoding)?; + builder.raw_copy_file_rename(file, converted_name)?; + } + + builder.finish()?; + + Ok(()) +}