Init.

.github/workflows/rust.yml

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+on: [push]
+name: Luhny.rs CI
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+
+      - name: "Run tests."
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+      - name: "Validate an IMEI number from the CLI. (true case)"
+        uses: actions-rs/cargo@v1
+        with:
+            command: run
+            args: -- -c 353879234252633
+
+      - name: "Validate an IMEI number from the CLI. (false case)"
+        uses: actions-rs/cargo@v1
+        with:
+            command: run
+            args: -- -c 353879234252634

.gitignore

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+/target
+.DS_Store
+Cargo.lock

Cargo.toml

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+[package]
+name = "luhny"
+version = "0.1.0"
+edition = "2021"
+license-file = "LICENSE"
+author = ["Alyx Shang"]
+description= "A library and tool to validate unique device identifiers."
+homepage = "https://github.com/alyxshang/luhny.rs"
+repository = "https://github.com/alyxshang/luhny.rs"
+readme = "README.markdown"
+
+[dependencies]
+cliply = { git = "https://github.com/alyxshang/cliply", tag = "v.0.1.0" }
+coutils = { git = "https://github.com/alyxshang/coutils", tag = "v.0.1.0" }
+
+[profile.release]
+lto = true
+strip = true
+opt-level = "z"
+codegen-units = 1

LICENSE

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+FAIR SOFTWARE LICENSE
+Version 1, September 3 2024
+
+Copyright (C) 2024 Alyx Shang <https://alyxshang.boo>
+Anyone is permitted to copy and distribute verbatim copies
+of this license document, but changing it is not allowed.
+
+A single author or authors of this project permit the following use of this project:
+
+- 1.) Any entity is allowed to redistribute and modify this project.
+- 2.) If the project is modified in any way, the original author or original authors must to be credited.
+- 3.) Corporate entities ARE NOT permitted to use this project commercially or for patent use.
+
+The following restrictions apply to this project:
+
+- 1.) The original author or original authors are not liable for any warranty claims. Use of the project is at one's own risk.
+- 2.) The original author or original authors are not responsible for any consequences resulting from use of this project.
+- 3.) Any modified versions of this project or projects making use of this project must use this version of this license.

README.markdown

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+# LUHNY.RS :iphone: :lock: :crab:
+
+![GitHub CI](https://github.com/alyxshang/luhny.rs/actions/workflows/rust.yml/badge.svg)
+
+***A library and tool to validate unique device identifiers. :iphone: :lock: :crab:***
+
+## ABOUT :books:
+
+## USAGE :hammer:
+
+## CHANGELOG :black_nib:
+
+### Version 0.1.0
+
+- Initial release.
+- Upload to GitHub.
+
+## NOTE :scroll:
+
+- *Luhny.rs :iphone: :lock: :crab:* by *Alyx Shang :black_heart:*.
+- Licensed under the [FSL v1](https://github.com/alyxshang/fair-software-license).

src/lib.rs

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+/*
+Luhny.rs by Alyx Shang.
+Licensed under the FSL v1.
+*/
+
+/// Declaring the
+/// "modules"
+/// directory as a module.
+pub mod modules;
+
+/// Re-exporting the 
+/// module containing
+/// this crate's 
+/// error-handling
+/// structure.
+pub use modules::err::*;
+
+/// Re-exporting the 
+/// module containing
+/// this crate's 
+/// CLI.
+pub use modules::cli::*;
+
+/// Re-exporting the 
+/// module containing
+/// this crate's 
+/// main APIs.
+pub use modules::luhny::*;

src/main.rs

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+/*
+Luhny.rs by Alyx Shang.
+Licensed under the FSL v1.
+*/
+
+/// Importing this crate's
+/// CLI function.
+use luhny::cli;
+
+/// The main
+/// point of entry
+/// for the Rust compiler.
+fn main(){
+    match cli(){
+        Ok(res) => println!("{}", &res),
+        Err(e) => eprintln!("{}", &e)
+    };
+}

src/modules/cli.rs

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+/*
+Luhny.rs by Alyx Shang.
+Licensed under the FSL v1.
+*/
+
+/// Importing the "App"
+/// structure from the "cliply"
+/// crate to make a new CLI
+/// application.
+use cliply::App;
+
+/// Importing the structure
+/// to catch and handle errors.
+use super::err::LuhnyErr;
+
+/// Importing the function to validate
+/// an IMEI number.
+use super::luhny::validate_imei;
+
+/// This function contains Luhny's CLI.
+/// A string or an error is returned.
+pub fn cli() -> Result<String,LuhnyErr> {
+    let mut luhny: App = App::new(
+        "Luhny",
+        "Alyx Shang",
+        "0.1.0"
+    );
+    luhny.add_arg("chk", "check the supplied IMEI number", &true);
+    if luhny.version_is(){
+        Ok(luhny.version_info())
+    }
+    else if luhny.help_is(){
+        Ok(luhny.help_info())
+    }
+    else if luhny.arg_was_used("chk"){
+        let imei: String = match luhny.get_arg_data("chk"){
+            Ok(imei) => imei,
+            Err(e) => return Err::<String,LuhnyErr>(LuhnyErr::new(&e.to_string()))
+        };
+        let validation: bool = match validate_imei(&imei){
+            Ok(validation) => validation,
+            Err(e) => return Err::<String,LuhnyErr>(LuhnyErr::new(&e.to_string()))
+        };
+
+        if validation {
+            let msg: String = format!("The IMEI number \"{}\" is valid.", imei);
+            Ok(msg)
+        }
+        else {
+            let msg: String = format!("The IMEI number \"{}\" is not valid.", imei);
+            Ok(msg)
+        }
+    }
+    else {
+        Err::<String,LuhnyErr>(LuhnyErr::new(&luhny.help_info()))
+    }
+}

src/modules/err.rs

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+/*
+Luhny.rs by Alyx Shang.
+Licensed under the FSL v1.
+*/
+
+/// Importing the standard
+/// "Result" enum.
+use std::fmt::Result;
+
+/// Importing the standard
+/// "Display" trait.
+use std::fmt::Display;
+
+/// Importing the standard
+/// "Error" trait.
+use std::error::Error;
+
+/// Importing the standard
+/// "Formatter" trait.
+use std::fmt::Formatter;
+
+/// A data structure for
+/// storing and handling errors.
+#[derive(Clone,Eq,PartialEq, Debug)]
+pub struct LuhnyErr {
+    pub details: String
+}
+
+/// Implements functions
+/// for the "LuhnyErr"
+/// structure.
+impl LuhnyErr {
+
+    /// Implements a function to create
+    /// a new instance of this data structure.
+    pub fn new(details: &str) -> LuhnyErr {
+        return LuhnyErr {
+            details: details.to_owned()
+        };
+    }
+
+    /// Implements a function to return
+    /// a string representation of this 
+    /// data structure.
+    pub fn to_string(self) -> String {
+        return self.details.to_string();
+    }
+}
+
+/// Implements the error trait.
+impl Error for LuhnyErr {
+    fn description(&self) -> &str {
+        &self.details
+    }
+}
+
+/// Implements the Display trait
+/// for the "LuhnyErr" structure.
+impl Display for LuhnyErr {
+    fn fmt(&self, f: &mut Formatter) -> Result {
+        return write!(f,"{}",self.details);
+    }
+}