atom: allow excluding pages from feed with regex

Cargo.lock

@@ -2,6 +2,15 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "aho-corasick"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
+dependencies = [
+ "memchr",
+]
+
 [[package]]
 name = "anstyle"
 version = "1.0.7"
@@ -76,6 +85,7 @@ dependencies = [
  "git2",
  "html-escaper",
  "orgize",
+ "regex",
  "rowan",
  "serde",
  "serde_derive",
@@ -534,6 +544,35 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "regex"
+version = "1.10.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b91213439dad192326a0d7c6ee3955910425f441d7038e0d6933b0aec5c4517f"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-automata",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-automata"
+version = "0.4.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38caf58cc5ef2fed281f89292ef23f6365465ed9a41b7a7754eb4e26496c92df"
+dependencies = [
+ "aho-corasick",
+ "memchr",
+ "regex-syntax",
+]
+
+[[package]]
+name = "regex-syntax"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7a66a03ae7c801facd77a29370b4faec201768915ac14a721ba36f20bc9c209b"
+
 [[package]]
 name = "rowan"
 version = "0.15.15"

Cargo.toml

@@ -13,6 +13,7 @@ clap = { version = "4.5.3", default-features = false, features = ["derive", "std
 git2 = { version = "0.18.3", default-features = false }
 html-escaper = "0.2.0"
 orgize = "=0.10.0-alpha.10"
+regex = { version = "1.10.5", default-features = false, features = ["std", "perf"] }
 rowan = "0.15.15"
 serde = { version = "1.0.197", default-features = false }
 serde_derive = { version = "1.0.197" }

src/atom.rs

@@ -1,8 +1,9 @@
 use crate::git::ModifyMap;
 use chrono::{DateTime, NaiveDateTime};
 use html_escaper::Escape;
+use regex::RegexSet;
 use std::{
-    collections::{BTreeMap, BTreeSet},
+    collections::BTreeMap,
     fmt::{self, Write},
     path::PathBuf,
 };
@@ -49,7 +50,7 @@ impl fmt::Display for AtomDateTime {
 pub fn entries<'a>(
     titles: &'a BTreeMap<PathBuf, (String, PathBuf)>,
     mtime: &'a ModifyMap,
-    exclude: &Option<BTreeSet<String>>,
+    exclude: &RegexSet,
 ) -> Result<Vec<AtomEntry<'a>>, Box<dyn std::error::Error>> {
     let mut entries = vec![];
 
@@ -59,10 +60,8 @@ pub fn entries<'a>(
             None => continue,
         };
 
-        if let Some(exclude) = exclude {
-            if exclude.contains(path) {
-                continue;
-            }
+        if exclude.is_match(path) {
+            continue;
         }
 
         let (updated, author) = mtime.get(old).ok_or("missing modification info")?;

src/main.rs

@@ -3,15 +3,9 @@
 use clap::Parser;
 use git2::{Object, Repository};
 use orgize::ParseConfig;
+use regex::RegexSet;
 use serde_derive::Deserialize;
-use std::{
-    cmp::min,
-    collections::{BTreeMap, BTreeSet},
-    error::Error,
-    fs,
-    io::Write,
-    path::PathBuf,
-};
+use std::{cmp::min, collections::BTreeMap, error::Error, fs, io::Write, path::PathBuf};
 
 mod atom;
 mod git;
@@ -31,7 +25,7 @@ struct ClamConfig {
     title: String,
     id: Option<String>,
     url: String,
-    exclude: Option<BTreeSet<String>>,
+    exclude: Option<Vec<String>>,
 }
 
 fn generate(
@@ -77,8 +71,13 @@ fn generate(
 
     if let Ok(config) = fs::read_to_string(".clam.toml") {
         let config: ClamConfig = toml_edit::de::from_str(&config)?;
+        let exclude = if let Some(e) = config.exclude {
+            RegexSet::new(e)?
+        } else {
+            RegexSet::empty()
+        };
 
-        let feed = atom::entries(&titles, &mtime, &config.exclude)?;
+        let feed = atom::entries(&titles, &mtime, &exclude)?;
 
         let mut f = fs::File::create("feed.xml")?;
         f.write_all(