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// Copyright (c) 2016-2017 Martijn Rijkeboer <mrr@sru-systems.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::error;
use std::fmt;
use std::result::Result;
/// The type of obfuscation to use.
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
pub enum Obfuscation {
None,
UseClipboard,
}
impl Obfuscation {
/// Attempts to convert an integer to an obfuscation type.
///
/// # Examples
///
/// ```rust
/// use kpdb::Obfuscation;
/// # use kpdb::ObfuscationError;
///
/// # fn from_i32_example() -> Result<Obfuscation, ObfuscationError> {
/// let obfuscation = Obfuscation::from_i32(0)?;
/// # Ok(obfuscation)
/// # }
/// ```
pub fn from_i32(id: i32) -> Result<Obfuscation, ObfuscationError> {
match id {
0 => Ok(Obfuscation::None),
1 => Ok(Obfuscation::UseClipboard),
_ => Err(ObfuscationError::InvalidValue),
}
}
/// Gets the integer value of the obfuscation type.
///
/// # Examples
///
/// ```rust
/// use kpdb::Obfuscation;
///
/// let obfuscation = Obfuscation::None;
/// let integer = obfuscation.to_i32();
/// ```
pub fn to_i32(self) -> i32 {
self as i32
}
}
impl Default for Obfuscation {
fn default() -> Obfuscation {
Obfuscation::None
}
}
/// Error type for obfuscation conversion errors.
#[derive(Debug, PartialEq)]
pub enum ObfuscationError {
/// Invalid value.
InvalidValue,
}
impl ObfuscationError {
fn msg(&self) -> &str {
match *self {
ObfuscationError::InvalidValue => "invalid value",
}
}
}
impl fmt::Display for ObfuscationError {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
ObfuscationError::InvalidValue => write!(f, "Obfuscation error: {}", self.msg()),
}
}
}
impl error::Error for ObfuscationError {
fn description(&self) -> &str {
self.msg()
}
fn cause(&self) -> Option<&dyn error::Error> {
None
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_from_i32_with_valid_i32_returns_obfuscation() {
assert_eq!(Obfuscation::from_i32(0), Ok(Obfuscation::None));
assert_eq!(Obfuscation::from_i32(1), Ok(Obfuscation::UseClipboard));
}
#[test]
fn test_from_i32_with_invalid_i32_returns_error() {
assert_eq!(Obfuscation::from_i32(-1), Err(ObfuscationError::InvalidValue));
assert_eq!(Obfuscation::from_i32(2), Err(ObfuscationError::InvalidValue));
}
#[test]
fn test_to_i32_returns_correct_i32() {
assert_eq!(Obfuscation::None.to_i32(), 0);
assert_eq!(Obfuscation::UseClipboard.to_i32(), 1);
}
#[test]
fn test_default_returns_correct_value() {
assert_eq!(Obfuscation::default(), Obfuscation::None);
}
}