Implement ruleset applier (fixes #3)

Author: AMDmi3

Cargo.lock

@@ -11,3 +11,4 @@ glob = "0.3.1"
 regex = { version = "1.10.3", default-features = false, features = ["std"] }
 serde = { version = "1.0.196", features = ["derive"] }
 serde_yaml = "0.9.31"
+walkdir = "2.4.0"

Cargo.toml

@@ -0,0 +1,38 @@
+use crate::ruleset::{Rule, Ruleset};
+use glob;
+use std::fs;
+use std::path::Path;
+use walkdir::WalkDir;
+
+fn apply_rule_to_path(rule: &Rule, path: &Path) {
+    let text = fs::read_to_string(path).unwrap();
+
+    for (nline, line) in text.lines().enumerate() {
+        if rule.regex.is_match(line) {
+            println!("{}:{}: {}", path.display(), nline + 1, rule.title);
+        }
+    }
+}
+
+fn apply_rule_to_target(rule: &Rule, target: &Path) {
+    let mut match_options = glob::MatchOptions::new();
+    match_options.require_literal_separator = true;
+
+    for path in WalkDir::new(target)
+        .into_iter()
+        .filter_map(|e| e.ok())
+        .filter(|e| e.file_type().is_file())
+        .map(|e| e.into_path())
+    {
+        let path = path.strip_prefix(&target).unwrap();
+        if rule.glob.matches_path_with(path, match_options) {
+            apply_rule_to_path(rule, path);
+        }
+    }
+}
+
+pub fn apply_ruleset_to_target(ruleset: &Ruleset, target: &Path) {
+    for rule in &ruleset.rules {
+        apply_rule_to_target(&rule, target);
+    }
+}

src/applier.rs

@@ -1,6 +1,9 @@
+mod applier;
 mod parser;
 mod ruleset;
 
+use crate::applier::apply_ruleset_to_target;
+use crate::parser::parse_config_from_file;
 use clap::Parser;
 use std::path::PathBuf;
 
@@ -18,4 +21,10 @@ struct Args {
 
 fn main() {
     let args = Args::parse();
+
+    let config = parse_config_from_file(&args.config);
+
+    for target in args.targets {
+        apply_ruleset_to_target(&config, &target);
+    }
 }