zip_extensions/utilities/
file_utils.rs

1use std::fs::File;
2use std::io;
3use std::io::{Error, ErrorKind, Write};
4use std::path::{Component, PathBuf};
5
6/// Writes all bytes to a file.
7pub fn file_write_all_bytes(path: PathBuf, bytes: &[u8], overwrite: bool) -> io::Result<usize> {
8    if path.exists() && !overwrite {
9        return Err(Error::new(
10            ErrorKind::AlreadyExists,
11            "The specified file already exists.",
12        ));
13    }
14    let mut file = File::create(path)?;
15    file.set_len(0)?;
16    file.write(bytes)
17}
18
19/// Returns a relative path from one path to another.
20pub(crate) fn make_relative_path(root: &PathBuf, current: &PathBuf) -> PathBuf {
21    let mut result = PathBuf::new();
22    let root_components = root.components().collect::<Vec<Component>>();
23    let current_components = current.components().collect::<Vec<_>>();
24    for i in 0..current_components.len() {
25        let current_path_component: Component = current_components[i];
26        if i < root_components.len() {
27            let other: Component = root_components[i];
28            if other != current_path_component {
29                break;
30            }
31        } else {
32            result.push(current_path_component)
33        }
34    }
35    result
36}
37
38// Returns a String representing the given Path.
39pub(crate) fn path_as_string(path: &std::path::Path) -> String {
40    let mut path_str = String::new();
41    for component in path.components() {
42        if let Component::Normal(os_str) = component {
43            if !path_str.is_empty() {
44                path_str.push('/');
45            }
46            path_str.push_str(&*os_str.to_string_lossy());
47        }
48    }
49    path_str
50}
zip_extensions/utilities/file_utils.rs

zip_extensions/utilities/
file_utils.rs
