Hacky .gitignore handling

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "dirwatcher"
-version = "0.1.0"
+version = "0.4.0"
 authors = ["Matt Green <mattgreenrocks@gmail.com>"]
 
 [dependencies]

src/main.rs

@@ -5,6 +5,9 @@ use std::env;
 use libc::system;
 use notify::{Event, RecommendedWatcher, Watcher};
 use std::ffi::CString;
+use std::fs::File;
+use std::io::BufRead;
+use std::io::BufReader;
 use std::path::{Path,PathBuf};
 use std::string::String;
 use std::sync::mpsc::{channel, Receiver, RecvError};
@@ -18,9 +21,12 @@ fn clear() {
 
 }
 
-fn ignored(relpath: &Path) -> bool {
-    if relpath.to_str().unwrap().starts_with(".") {
-        return true;
+fn ignored(relpath: &Path, ignores: &Vec<String>) -> bool {
+    for i in ignores.iter() {
+        if relpath.to_str().unwrap().starts_with(i) {
+            //println!("Ignoring {} because {}", relpath.to_str().unwrap(), i);
+            return true;
+        }
     }
 
     false
@@ -33,14 +39,33 @@ fn invoke(cmd: &String) {
     }
 }
 
-fn wait(rx: &Receiver<Event>, cwd: &PathBuf) -> Result<Event, RecvError> {
+fn read_gitignore(path: &str) -> Result<Vec<String>, std::io::Error>   {
+    let f = try!(File::open(path));
+    let reader = BufReader::new(f);
+
+    let mut entries = vec![];
+    for line in reader.lines() {
+        let l = try!(line).trim().to_string();
+
+        if l.starts_with("#") || l.len() == 0 {
+            continue;
+        }
+
+        //println!("Read {}", l);
+        entries.push(l);
+    }
+
+    Ok(entries)
+}
+
+fn wait(rx: &Receiver<Event>, cwd: &PathBuf, ignore: &Vec<String>) -> Result<Event, RecvError> {
     loop {
         let e = try!(rx.recv());
 
         let ignored = match e.path {
             Some(ref path)  => {
                 let stripped = path.strip_prefix(cwd).unwrap();
-                ignored(stripped)
+                ignored(stripped, &ignore)
             },
             None        => false
         };
@@ -65,6 +90,13 @@ fn main() {
     let cmd = env::args().nth(1).expect("Argument 1 needs to be a command");
     let cwd = env::current_dir().unwrap();
 
+    let mut ignored = vec![];
+    ignored.push(String::from("."));
+    match read_gitignore(".gitignore") {
+        Ok(gitignores)  => ignored.extend(gitignores),
+        Err(_)          => ()
+    }
+
     let (tx, rx) = channel();
     let mut watcher: RecommendedWatcher = Watcher::new(tx)
         .expect("unable to create watcher");
@@ -72,11 +104,11 @@ fn main() {
         .expect("unable to start watching directory");
 
     loop {
-        clear();
-        let e = wait(&rx, &cwd)
+        //clear();
+        let e = wait(&rx, &cwd, &ignored)
             .expect("error when waiting for filesystem changes");
 
-        println!("{:?} {:?}", e.op, e.path);
+        //println!("{:?} {:?}", e.op, e.path);
         invoke(&cmd);
     }
 }