39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
use std::borrow::Cow;
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use regex::Regex;
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use percent_encoding::percent_decode;
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/// Escape special ASCII characters with a backslash.
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pub fn escape_filename<'t>(filename: &'t str) -> Cow<'t, str> {
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lazy_static! {
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static ref SPECIAL_CHARS: Regex = if cfg!(target_os = "windows") {
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// On Windows, don't escape `:` and `\`, as these are valid components of the path.
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Regex::new(r"[[:ascii:]&&[^0-9a-zA-Z._:\\-]]").unwrap()
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} else {
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// Similarly, don't escape `/` on other platforms.
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Regex::new(r"[[:ascii:]&&[^0-9a-zA-Z._/-]]").unwrap()
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};
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}
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SPECIAL_CHARS.replace_all(&*filename, r"\$0")
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}
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/// Decode a file URI.
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///
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/// - On UNIX: `file:///path/to/a%20file.ext` -> `/path/to/a file.ext`
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/// - On Windows: `file:///C:/path/to/a%20file.ext` -> `C:\path\to\a file.ext`
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pub fn decode_uri(uri: &str) -> Option<String> {
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let path = match uri.split_at(8) {
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("file:///", path) => path,
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_ => return None,
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};
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let path = percent_decode(path.as_bytes()).decode_utf8().ok()?;
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if cfg!(target_os = "windows") {
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lazy_static! {
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static ref SLASH: Regex = Regex::new(r"/").unwrap();
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}
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Some(String::from(SLASH.replace_all(&*path, r"\")))
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} else {
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Some("/".to_owned() + &path)
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}
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}
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