Fachschaft/alias_to_sieve
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This commit is contained in:
Gonne 2024-11-03 09:28:48 +01:00
parent 14112acea3
commit 4050aeb2dd
1 changed files with 8 additions and 7 deletions
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15
src/main.rs
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@ -1,18 +1,19 @@
use std::io::{self}; use std::io::{self};
use std::collections::HashMap; use std::collections::BTreeMap;
fn main() { fn main() {
let redirects = parse_alias_to_hashmap(); let redirects = parse_alias_to_BTreeMap();
let sieve_script = generate_sieve_script(redirects); let sieve_script = generate_sieve_script(redirects);
println!("{}", sieve_script); println!("{}", sieve_script);
} }
fn generate_sieve_script(redirects: HashMap<String, Vec<String>>) -> String { fn generate_sieve_script(redirects: BTreeMap<String, Vec<String>>) -> String {
let mut script : String = "require [\"envelope\", \"copy\"];\n".to_string(); let mut script : String = "require [\"envelope\", \"copy\"];\n".to_string();
for (redirect, destinations) in redirects { for (redirect, mut destinations) in redirects {
script += format!("if envelope :is \"to\" \"{}\" {{\n{}}}\n", redirect, script += format!("if envelope :is \"to\" \"{}\" {{\n{}}}\n", redirect,
(|| { (|| {
let mut subscript : String = "".to_string(); let mut subscript : String = "".to_string();
destinations.sort();
for destination in destinations.iter().rev().skip(1).rev() { for destination in destinations.iter().rev().skip(1).rev() {
subscript += format!(" redirect :copy \"{}\";\n", destination).as_str(); subscript += format!(" redirect :copy \"{}\";\n", destination).as_str();
} }
@ -24,9 +25,9 @@ fn generate_sieve_script(redirects: HashMap<String, Vec<String>>) -> String {
return script; return script;
} }
fn parse_alias_to_hashmap() -> HashMap<String, Vec<String>> { fn parse_alias_to_BTreeMap() -> BTreeMap<String, Vec<String>> {
// File must exist in the current path // File must exist in the current path
let mut redirect_map : HashMap<String, Vec<String>> = HashMap::new(); let mut redirect_map : BTreeMap<String, Vec<String>> = BTreeMap::new();
let mut destinations : Vec<String> = Vec::new(); let mut destinations : Vec<String> = Vec::new();
for line in io::stdin().lines() { for line in io::stdin().lines() {
let line = line.unwrap(); let line = line.unwrap();
@ -46,7 +47,7 @@ fn parse_alias_to_hashmap() -> HashMap<String, Vec<String>> {
let mut changed = true; let mut changed = true;
while changed { while changed {
changed = false; changed = false;
let mut all_new_redirects : HashMap<String, Vec<String>> = HashMap::new(); let mut all_new_redirects : BTreeMap<String, Vec<String>> = BTreeMap::new();
for destination in destinations.iter() { for destination in destinations.iter() {
for forward_to in redirect_map.get(destination).unwrap().iter() { for forward_to in redirect_map.get(destination).unwrap().iter() {
if let Some(new_redirects) = redirect_map.get(forward_to) { if let Some(new_redirects) = redirect_map.get(forward_to) {