Method parse_acl

client/src/cmds.rs:309–325

Parses a textual ACL specification and adds it to `add` or `remove.

(mut acl: String, add: &mut FileAcls, remove: &mut FileAcls)

impl ShareCommand {
    /// Parses a textual ACL specification and adds it to `add` or `remove.
    fn parse_acl(mut acl: String, add: &mut FileAcls, remove: &mut FileAcls) -> Result<(), String> {
        let change = if acl.len() < 3 { String::new() } else { acl.split_off(acl.len() - 2) };
        let username = acl; // For clarity after splitting off the ACL change request.
        match (username, change.as_str()) {
            (username, "+r") if !username.is_empty() => add.add_reader(username),
            (username, "+R") if !username.is_empty() => add.add_reader(username),
            (username, "-r") if !username.is_empty() => remove.add_reader(username),
            (username, "-R") if !username.is_empty() => remove.add_reader(username),
            (username, change) => {
                return Err(format!(
                    "Invalid ACL '{}{}': must be of the form \"username+r\" or \"username-r\"",
                    username, change
                ));
            }
        }
        Ok(())
    }

    /// Checks if a file is publicly readable by inspecting a set of ACLs.
    fn has_public_acl(acls: &FileAcls) -> bool {