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/************************************************************************ * pk:78ed70e6c325b60f4e9eddbcfbe76959207fb6f8eaa74281350606cf6fc03b52 ************************************************************************/ //! stdext module // - STD use std::env; // - internal use crate as phollaits; /// Trait contains some extensions for [bool]. pub trait BoolExtensions { /// method to reverse the value of a bool. /// # Example /// ```rust /// fn main() { /// let a = true; /// a.reverse(); /// asserteq!(a, false); /// } /// ``` fn reverse(&mut self); } impl BoolExtensions for bool { fn reverse(&mut self) { match &self { true => *self = false, false => *self = true, } } } /// Trait contains some extensions for [Option]. pub trait OptionExtensions<T> { fn to_string_option(self) -> Option<String>; fn to_string(self) -> String; } impl<T: ToString> OptionExtensions<T> for Option<T> { /// method to allow a conversion of Option<str> to Option<String> directly. /// # Example /// ```rust /// /// extern crate phollaits; /// use phollaits::*; /// fn main() { /// let a = Some("Yes yes yeeesss!"); /// assert_eq!(a, Some("Yes yes yeeesss!")); /// assert_eq!(a.to_string_option(), Some("Yes yes yeeesss!".to_string())) /// } /// ``` fn to_string_option(self) -> Option<String> { match self { Some(x) => Some(x.to_string()), None => None, } } /// method to allow a conversion of Option<T> to String directly (if T implements the [ToString]-trait). /// # Example /// ```rust /// /// extern crate phollaits; /// use phollaits::*; /// fn main() { /// let a = Some("test"); /// assert_eq!("test".to_string(), a.to_string()) /// } /// ``` fn to_string(self) -> String { match self { Some(x) => x.to_string(), None => phollaits::NONE.to_string() } } } /// Trait contains some extensions for [String]. pub trait StringExt { /// method to allow shell-like expansions in [String]. /// # Example to expand tilda /// ```rust /// extern crate phollaits; /// use phollaits::*; /// /// fn main() { /// let a = "~/projects/phollaits".to_string(); /// let b = s.shellexpand(); /// assert_eq!(b, "/home/ph0llux/projects/phollaits".to_string()); /// } /// ``` fn shellexpand(self) -> String; } impl StringExt for String { fn shellexpand(self) -> String { if self.contains(phollaits::FORMAT_TILDA) { match env::var_os(phollaits::ENV_VAR_HOME) { Some(x) => match x.to_str() { Some(x) => return self.replace(phollaits::FORMAT_TILDA, x), None => return self, }, None => return self, } } self } } /// Trait contains some extensions for [Vec]. pub trait VecExt { /// method to convert into Vec<String>. fn to_vec_string(self) -> Vec<String>; } impl VecExt for Vec<&str> { /// method to convert Vec<&str> into Vec<String>. /// # Example /// ```rust /// extern crate phollaits; /// use phollaits::*; /// /// const a: [&'static str; 6] = [ "a", "b", "c" ]; /// /// fn main() { /// let b = a.to_vec; /// let c = vec!("a".to_string(), "b".to_string(), "c".to_string()); /// assert_eq!(b.to_vec_string, c); /// } /// ``` fn to_vec_string(self) -> Vec<String> { self.into_iter().map(Into::into).collect() } }