GeosCoin/
lib.rs

1//! # My Crate
2//!
3//! `my_crate` is a collection of utilities to make performing certain
4//! calculations more convenient.
5//! 
6use std::fs;
7use std::error::Error;
8use std::env;
9
10pub struct Config {
11    pub query: String,
12    pub file_path: String,
13    pub ignore_case: bool,
14}
15
16impl Config {
17    pub fn build(mut args: impl Iterator<Item=String>) -> Result<Config, &'static str> {
18        args.next();
19        
20        let query = match args.next() {
21            Some(val) => val,
22            None => panic!("dd")
23        };
24        let file_path = match args.next() {
25            Some(val) => val,
26            None => panic!("yy")
27        };
28
29        let ignore_case = env::var("IGNORE_CASE").is_ok();
30
31        Ok(Config {query, file_path, ignore_case})
32    }
33}
34
35pub fn run(cfg : &Config) -> Result<(), Box<dyn Error>>{
36    
37    let contents = fs::read_to_string(cfg.file_path.clone())?;
38
39    let results: Vec<&str> = if cfg.ignore_case {
40        search_case_insensitive(&cfg.query, &contents)
41    } else {
42        search(&cfg.query, &contents)
43    };
44
45    if results.len() > 0 {
46        for line in results {
47            println!("{line}");
48        }
49    }
50
51    Ok(())
52}
53
54pub fn search<'a>(query: &str, contents: &'a str) -> Vec<&'a str>{
55    contents
56        .lines()
57        .filter(|line|line.contains(query))
58        .collect()
59    
60}
61
62/// Search with case insensitive 
63/// 
64/// #Example
65/// 
66/// ```
67/// use minigrep::search_case_insensitive;
68/// 
69/// let query = "1";
70/// let contents = "1 2";
71/// 
72/// let find_line = search_case_insensitive(query, contents);
73/// ``` 
74/// 
75/// #Panics
76/// 
77/// 
78pub fn search_case_insensitive<'a>(query: &str, contents: &'a str) -> Vec<&'a str>{
79    contents
80        .lines()
81        .filter(|line| line.to_lowercase().contains(&query.to_lowercase()))
82        .collect()
83}
84
85#[cfg(test)]
86mod tests {
87    use super::*;
88
89    #[test]
90    #[ignore = "reason"]
91    fn case_sensitive(){
92        let query = "Duct";
93        let contents = "\
94        Rust: 
95safe, fast, productive
96        Pick three.";
97
98        let vec: Vec<&str> = search(query, contents);
99        println!("{:?}", vec);
100        assert_eq!(vec!["safe, fast, productive"], vec);
101
102    }
103
104    #[test]
105    fn case_insensitive() {
106        let query = "rUsT";
107        let contents = "\
108Rust:
109safe, fast, productive
110Pick three.
111Trust me.";
112
113        let vec: Vec<&str> = search_case_insensitive(query, contents);
114        println!("{:?}", vec);
115        assert_eq!(
116            vec!["Rust:", "Trust me."], 
117            vec);
118
119    }
120}
GeosCoin/lib.rs

GeosCoin/
lib.rs
