ju_tcs_rust_23_29/
lib.rs

1use std::fs::read_to_string;
2use std::path::Path;
3
4pub fn head(path: &Path, n: usize) -> Vec<String> {
5    let mut lines: Vec<String> = Vec::new();
6    lines = read_file(path);
7    let size_file = lines.len();
8    if size_file >= n {
9        lines.drain(n.. size_file);
10    } else {
11        panic!("too few lines");
12    }
13    lines
14}
15
16pub fn tail(path: &Path, n: usize) -> Vec<String> {
17    let mut lines: Vec<String> = Vec::new();
18    lines = read_file(path);
19    let size_file = lines.len();
20    if size_file >= n {
21        lines.drain(0.. size_file - n);
22    } else {
23        panic!("too few lines");
24    }
25    lines
26}
27
28fn read_file(path: &Path) -> Vec<String>{
29    let mut lines: Vec<String> = Vec::new();
30    for line in read_to_string(path).unwrap().lines(){
31        lines.push(line.to_string());
32    }
33    lines
34}
ju_tcs_rust_23_29/lib.rs

ju_tcs_rust_23_29/
lib.rs
