Dmitriy Pleshevskiy
21e6aba270
- removed all functions, features and examples - recreate core types - recreate get_env and get_env_or_set_default
59 lines
1.3 KiB
Rust
59 lines
1.3 KiB
Rust
use crate::core::EnvString;
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use std::convert::TryFrom;
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use std::fmt::Write;
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pub const COMMA: char = ',';
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pub const SEMI: char = ';';
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pub type CommaVec<T> = SepVec<T, COMMA>;
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pub type SemiVec<T> = SepVec<T, SEMI>;
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#[derive(Debug, PartialEq, Clone)]
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pub struct SepVec<T, const SEP: char>(pub Vec<T>);
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impl<T, const SEP: char> std::ops::Deref for SepVec<T, SEP> {
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type Target = Vec<T>;
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#[inline]
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl<T, const SEP: char> From<Vec<T>> for SepVec<T, SEP> {
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#[inline]
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fn from(vec: Vec<T>) -> Self {
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Self(vec)
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}
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}
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impl<T, const SEP: char> std::fmt::Display for SepVec<T, SEP>
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where
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T: std::fmt::Display,
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{
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fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
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self.0.iter().enumerate().try_for_each(|(i, part)| {
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if i != 0 {
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f.write_char(SEP)?;
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}
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f.write_str(&part.to_string())
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})
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}
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}
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impl<T, const SEP: char> TryFrom<EnvString> for SepVec<T, SEP>
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where
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T: TryFrom<EnvString> + std::fmt::Display,
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{
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type Error = T::Error;
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fn try_from(value: EnvString) -> Result<Self, Self::Error> {
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let inner = value
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.split(SEP)
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.map(EnvString::from)
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.map(T::try_from)
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.collect::<Result<Vec<_>, _>>()?;
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Ok(Self(inner))
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}
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}
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