introduce fs_walk

Author: vbarbarosh

src/fs_walk.js

@@ -0,0 +1,40 @@
+const fs_lstat = require('./fs_lstat');
+const fs_path_join = require('./fs_path_join');
+const fs_readdir = require('./fs_readdir');
+const ignore = require('./ignore');
+
+async function fs_walk({path = '.', user_friendly_status = ignore, error_handler = error_handler, signal})
+{
+    const out = [];
+    const queue = [path];
+    while (queue.length) {
+        if (signal) {
+            signal.throwIfAborted();
+        }
+        try {
+            const current_path = queue.pop();
+            user_friendly_status(`Reading ${current_path}`);
+            const lstat = await fs_lstat(current_path);
+            lstat.path = current_path;
+            out.push(lstat);
+            if (lstat.isDirectory()) {
+                if (current_path === '/dev' || current_path === '/proc') {
+                    continue;
+                }
+                const basenames = await fs_readdir(current_path);
+                basenames.forEach(v => queue.push(fs_path_join(current_path, v)));
+            }
+        }
+        catch (error) {
+            error_handler(error);
+        }
+    }
+    return out;
+}
+
+function error_handler(error)
+{
+    console.log(`⚠️ ${error.message}`);
+}
+
+module.exports = fs_walk;