varpath/
lib.rs

1use serde::{Deserialize, Serialize};
2use std::fmt;
3use std::fmt::Display;
4use std::path::PathBuf;
5use std::str::FromStr;
6use winnow::ascii::alpha1;
7use winnow::combinator::alt;
8use winnow::combinator::delimited;
9use winnow::combinator::opt;
10use winnow::combinator::peek;
11use winnow::combinator::repeat;
12use winnow::error::IResult;
13use winnow::stream::AsChar;
14use winnow::token::take_while;
15use winnow::PResult;
16use winnow::Parser;
17mod variable;
18use eyre::Result;
19use serde::de::{self, Deserializer, Visitor};
20use serde::ser::Serializer;
21use thiserror::Error;
22use variable::parse_variable;
23use variable::Variable;
24
25pub mod environment;
26use environment::Environment;
27use environment::EnvironmentBuilder;
28
29mod varpath;
30use varpath::PathPart;
31pub use varpath::VarPath;
32
33#[cfg(test)]
34mod tests {
35    use super::*;
36    use homedir::my_home;
37    use pretty_assertions::assert_eq;
38
39    #[test]
40    fn test_no_lookup() {
41        let env = EnvironmentBuilder::default().build();
42        let actual = VarPath::from_str("/a/b/c").unwrap().eval(&env).unwrap();
43        let expected = PathBuf::from("/a/b/c");
44        assert_eq!(expected, actual);
45    }
46
47    #[test]
48    fn test_lookup_no_braces() {
49        let key = String::from("key");
50        let value = String::from("b");
51        let env = EnvironmentBuilder::default().set(&key, &value).build();
52        let actual = VarPath::from_str("/a/$key/c").unwrap().eval(&env).unwrap();
53        let expected = PathBuf::from("/a/b/c");
54        assert_eq!(expected, actual);
55    }
56
57    #[test]
58    fn test_lookup_braces() {
59        let key = String::from("key");
60        let value = String::from("b");
61        let env = EnvironmentBuilder::default().set(&key, &value).build();
62        let actual = VarPath::from_str("/a/${key}/c")
63            .unwrap()
64            .eval(&env)
65            .unwrap();
66        let expected = PathBuf::from("/a/b/c");
67        assert_eq!(expected, actual);
68    }
69
70    #[test]
71    fn test_process_env() {
72        let input = "/a/${PWD}/c";
73        let env = EnvironmentBuilder::default().with_process_env().build();
74        let actual = VarPath::from_str(input).unwrap().eval(&env).unwrap();
75        assert_ne!(PathBuf::from(input), actual);
76    }
77
78    #[test]
79    fn test_undefined_var() {
80        let env = EnvironmentBuilder::default().build();
81        let result = VarPath::from_str("/a/${BAD_BAD_BAD}/c").unwrap().eval(&env);
82        assert!(result.is_err());
83    }
84
85    #[test]
86    fn test_home() {
87        let input = "${HOME}";
88        let env = EnvironmentBuilder::default().with_process_env().build();
89        let actual = VarPath::from_str(input).unwrap().eval(&env).unwrap();
90        let expected = homedir::my_home().unwrap().unwrap();
91        assert_eq!(expected, actual);
92    }
93}
varpath/lib.rs

varpath/
lib.rs
