parent
930e33a138
commit
bbbf355fc0
7 changed files with 148 additions and 155 deletions
4
Cargo.lock
generated
4
Cargo.lock
generated
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@ -11,6 +11,6 @@ dependencies = [
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[[package]]
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name = "estring"
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version = "0.1.2"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72ea7e904ef7cb950eee02f9332b6a5c24c33bebeca6c027651b04f6c20658d9"
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checksum = "515fc26a9876dfa25822d8cc040c6e4497ff9f5be96f101ee136d6ece160d2cc"
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20
Cargo.toml
20
Cargo.toml
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@ -5,12 +5,10 @@ authors = ["Dmitriy Pleshevskiy <dmitriy@ideascup.me>"]
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description = "it helps you work with environment variables and convert it to any type using only type annotations"
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categories = ["config"]
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keywords = ["env", "environment"]
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edition = "2018"
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edition = "2021"
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license = "MIT"
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repository = "https://github.com/pleshevskiy/enve"
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[package.metadata]
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msrv = "1.51.0"
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rust-version = "1.59.0"
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# https://docs.rs/about
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[package.metadata.docs.rs]
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@ -20,17 +18,21 @@ all-features = true
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[features]
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default = []
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number = ["estring/number"]
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bool = ["estring/bool"]
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vec = ["estring/vec"]
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low-level = ["estring/low-level"]
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structs = ["estring/structs"]
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# deprecated
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number = []
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bool = []
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vec = ["structs"]
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[dependencies]
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estring = "0.1"
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estring = "0.2"
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[badges]
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maintenance = { status = "actively-developed" }
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[[example]]
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name = "calc"
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required-features = ["number", "vec"]
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required-features = ["structs"]
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255
src/core.rs
255
src/core.rs
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@ -1,6 +1,5 @@
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use crate::error::Error;
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use estring::EString;
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use std::convert::TryFrom;
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use estring::{EString, ParseFragment, ToEString};
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/// Fetches the environment variable `key` from the current process. It set value `default`
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/// if environment variable `key` ins'n set. Then this function tries to parse ``EString`` to
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@ -28,10 +27,10 @@ use std::convert::TryFrom;
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#[allow(clippy::needless_pass_by_value)]
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pub fn get_or_set_default<R>(env_name: &str, default: R) -> Result<R, Error>
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where
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R: TryFrom<EString> + std::fmt::Display,
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R: ParseFragment + ToEString,
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{
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get::<R>(env_name).or_else(|err| match err {
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Error::NotPresent => sset(env_name, &default).parse().map_err(Error::from),
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Error::NotPresent => sset(env_name, default).parse().map_err(Error::from),
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_ => Err(err),
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})
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}
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@ -63,7 +62,7 @@ where
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/// ```
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pub fn get<R>(key: &str) -> Result<R, Error>
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where
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R: TryFrom<EString>,
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R: ParseFragment,
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{
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sget(key).and_then(|v| v.parse().map_err(Error::from))
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}
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@ -108,18 +107,20 @@ pub fn sget(key: &str) -> Result<EString, Error> {
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/// let estr = enve::sset("KEY", "10");
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/// assert_eq!(estr.to_string(), String::from("10"));
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/// ```
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#[allow(clippy::needless_pass_by_value)]
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pub fn sset<V>(key: &str, value: V) -> EString
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where
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V: std::fmt::Display,
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V: ToEString,
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{
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let val = value.to_string();
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std::env::set_var(key, &val);
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val.into()
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let es = value.to_estring();
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std::env::set_var(key, &*es);
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es
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::estr::{CommaVec, SemiVec, SepVec};
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struct TestCase<const N: u8>;
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@ -171,150 +172,134 @@ mod tests {
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};
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}
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#[cfg(feature = "number")]
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mod numbers {
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use super::*;
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#[test]
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fn should_return_parsed_num() {
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let en = TestCase::<4>.to_string();
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std::env::set_var(&en, "-10");
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match get::<i32>(&en) {
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Ok(res) => assert_eq!(res, -10),
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_throw_parse_error() {
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let en = TestCase::<5>.to_string();
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std::env::set_var(&en, "-10");
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match get::<u32>(&en) {
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Err(Error::Parse(orig)) => {
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assert_eq!(orig, String::from("-10"));
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_set_default_num_if_var_is_no_present() {
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let en = TestCase::<6>.to_string();
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let orig = 10;
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match get_or_set_default(&en, orig) {
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Ok(res) => {
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assert_eq!(res, orig);
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assert_eq!(std::env::var(&en).unwrap(), "10");
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_return_parsed_num() {
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let en = TestCase::<4>.to_string();
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std::env::set_var(&en, "-10");
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match get::<i32>(&en) {
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Ok(res) => assert_eq!(res, -10),
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_ => unreachable!(),
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};
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}
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#[cfg(feature = "bool")]
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mod boolean {
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use super::*;
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#[test]
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fn should_parse_bool_variable() {
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let en = TestCase::<7>.to_string();
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let test_cases = [
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("1", true),
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("y", true),
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("yes", true),
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("true", true),
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("t", true),
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("on", true),
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("false", false),
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("f", false),
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("0", false),
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];
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for (val, expected) in &test_cases {
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let mut en = en.clone();
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en.push_str(val.as_ref());
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std::env::set_var(&en, val);
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match get::<bool>(&en) {
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Ok(res) => assert_eq!(res, *expected),
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_ => unreachable!(),
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};
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#[test]
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fn should_throw_parse_error() {
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let en = TestCase::<5>.to_string();
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std::env::set_var(&en, "-10");
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match get::<u32>(&en) {
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Err(Error::Parse(orig)) => {
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assert_eq!(orig, EString::from("-10"));
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}
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}
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_ => unreachable!(),
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};
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}
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#[cfg(feature = "vec")]
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mod vector {
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use super::*;
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use crate::estr::{CommaVec, SemiVec, SepVec};
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#[test]
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fn should_set_default_num_if_var_is_no_present() {
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let en = TestCase::<6>.to_string();
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let orig = 10;
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match get_or_set_default(&en, orig) {
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Ok(res) => {
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assert_eq!(res, orig);
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assert_eq!(std::env::var(&en).unwrap(), "10");
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_return_var_as_vector() {
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let en = TestCase::<8>.to_string();
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#[test]
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fn should_parse_bool_variable() {
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let en = TestCase::<7>.to_string();
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std::env::set_var(&en, "1,2,3,4,5");
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match get::<CommaVec<i32>>(&en) {
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Ok(res) => assert_eq!(*res, vec![1, 2, 3, 4, 5]),
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let test_cases = [
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("1", true),
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("y", true),
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("yes", true),
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("true", true),
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("t", true),
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("on", true),
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("false", false),
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("f", false),
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("0", false),
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];
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for (val, expected) in test_cases {
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let mut en = en.clone();
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en.push_str(val.as_ref());
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std::env::set_var(&en, val);
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match get::<bool>(&en) {
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Ok(res) => assert_eq!(res, expected),
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_ => unreachable!(),
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};
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}
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}
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#[test]
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fn should_trim_identations_before_parsing() {
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let en = TestCase::<9>.to_string();
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#[test]
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fn should_return_var_as_vector() {
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let en = TestCase::<8>.to_string();
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let input = "
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std::env::set_var(&en, "1,2,3,4,5");
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match get::<CommaVec<i32>>(&en) {
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Ok(res) => assert_eq!(*res, vec![1, 2, 3, 4, 5]),
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_trim_identations_before_parsing() {
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let en = TestCase::<9>.to_string();
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let input = "
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1 , 2, 3,
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4,5";
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std::env::set_var(&en, input);
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match get::<CommaVec<i32>>(&en) {
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Ok(res) => assert_eq!(*res, vec![1, 2, 3, 4, 5]),
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_ => unreachable!(),
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};
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}
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std::env::set_var(&en, input);
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match get::<CommaVec<i32>>(&en) {
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Ok(res) => assert_eq!(*res, vec![1, 2, 3, 4, 5]),
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_return_vector_of_vectors() {
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let en = TestCase::<10>.to_string();
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#[test]
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fn should_return_vector_of_vectors() {
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let en = TestCase::<10>.to_string();
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std::env::set_var(&en, "1,2; 3,4,5; 6,7");
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match get::<SemiVec<CommaVec<i32>>>(&en) {
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Ok(res) => assert_eq!(
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res,
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SemiVec::from(vec![
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CommaVec::from(vec![1, 2]),
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CommaVec::from(vec![3, 4, 5]),
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CommaVec::from(vec![6, 7])
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])
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),
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_ => unreachable!(),
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};
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}
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std::env::set_var(&en, "1,2; 3,4,5; 6,7");
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match get::<SemiVec<CommaVec<i32>>>(&en) {
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Ok(res) => assert_eq!(
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res,
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SemiVec::from(vec![
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CommaVec::from(vec![1, 2]),
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CommaVec::from(vec![3, 4, 5]),
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CommaVec::from(vec![6, 7])
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])
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),
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_throw_parse_vec_error() {
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let en = TestCase::<11>.to_string();
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std::env::set_var(&en, "1,2,3,4,5");
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match get::<SepVec<i32, '+'>>(&en) {
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Err(Error::Parse(orig)) => {
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assert_eq!(orig, String::from("1,2,3,4,5"));
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_throw_parse_vec_error() {
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let en = TestCase::<11>.to_string();
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std::env::set_var(&en, "1,2,3,4,5");
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match get::<SepVec<i32, '+'>>(&en) {
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Err(Error::Parse(orig)) => {
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assert_eq!(orig, EString::from("1,2,3,4,5"));
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_set_default_vector_if_var_is_no_present() {
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let en = TestCase::<12>.to_string();
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let orig = CommaVec::from(vec![1, 2, 3, 4]);
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match get_or_set_default(&en, orig.clone()) {
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Ok(res) => {
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assert_eq!(res, orig);
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assert_eq!(std::env::var(&en).unwrap(), "1,2,3,4");
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}
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_ => unreachable!(),
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};
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}
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#[test]
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fn should_set_default_vector_if_var_is_no_present() {
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let en = TestCase::<12>.to_string();
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let orig = CommaVec::from(vec![1, 2, 3, 4]);
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match get_or_set_default(&en, orig.clone()) {
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Ok(res) => {
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assert_eq!(res, orig);
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assert_eq!(std::env::var(&en).unwrap(), "1,2,3,4");
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}
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_ => unreachable!(),
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};
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}
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}
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10
src/error.rs
10
src/error.rs
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@ -3,6 +3,8 @@ use std::error;
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use std::ffi::OsString;
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use std::fmt;
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use estring::EString;
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/// The error type for operations interacting with environment variables
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#[derive(Debug)]
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pub enum Error {
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@ -10,7 +12,7 @@ pub enum Error {
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NotPresent,
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/// Failed to parse the specified environment variable.
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Parse(String),
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Parse(EString),
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/// The specified environment variable was found, but it did not contain
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/// valid unicode data. The found data is returned as a payload of this
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@ -45,8 +47,8 @@ impl From<VarError> for Error {
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}
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}
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impl From<estring::ParseError> for Error {
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fn from(err: estring::ParseError) -> Self {
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Error::Parse(err.clone())
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impl From<estring::Error> for Error {
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fn from(err: estring::Error) -> Self {
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Error::Parse(err.0)
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}
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}
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12
src/estr.rs
12
src/estr.rs
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@ -1,6 +1,8 @@
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#[cfg(feature = "vec")]
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mod vec;
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#[cfg(feature = "vec")]
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pub use vec::{CommaVec, SemiVec};
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#[cfg(feature = "structs")]
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mod structs;
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#[cfg(feature = "structs")]
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pub use structs::{CommaVec, SemiVec};
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pub use estring::core::*;
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pub use estring::core::EString;
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pub use estring::low::*;
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pub use estring::structs::*;
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|
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@ -62,3 +62,5 @@ mod estr;
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pub use crate::core::{get, get_or_set_default, sget, sset};
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pub use error::Error;
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pub use estr::*;
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pub use estring;
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Reference in a new issue