src,permission: enhance permission model debug

This commit enhance the permission model debug logs
when NODE_DEBUG_NATIVE=PERMISSION_MODEL is used
Example
Inserting /Users/rafaelgss/repos/os/node/t.js
└─ /
├─ Users/rafaelgss/repos/os/node/t.js
└─ tm
├─ 3
├─ 2
└─ p/*
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: #58898
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>

Author: RafaelGSS

src/permission/fs_permission.cc

@@ -72,43 +72,53 @@ bool is_tree_granted(
 return granted_tree->Lookup(resolved_param, true);
 }
 
-voidPrintTree(const node::permission::FSPermission::RadixTree::Node* node,
-size_t spaces = 0) {
- std::string whitespace(spaces, '');
+staticconstchar* kBoxDrawingsLightUpAndRight = "└─ ";
+staticconstchar* kBoxDrawingsLightVerticalAndRight = "├─ ";
 
+voidPrintTree(const node::permission::FSPermission::RadixTree::Node* node,
+size_t depth = 0,
+const std::string& branch_prefix = "",
+bool is_last = true) {
 if (node == nullptr) {
 return;
  }
-if (node->wildcard_child != nullptr) {
-node::per_process::Debug(node::DebugCategory::PERMISSION_MODEL,
-"%s Wildcard: %s\n",
- whitespace,
- node->prefix);
- } else {
+
+if (depth > 0 || (node->prefix.length() > 0)) {
+ std::string indent;
+
+if (depth > 0) {
+ indent = branch_prefix;
+if (is_last) {
+ indent += kBoxDrawingsLightUpAndRight;
+ } else {
+ indent += kBoxDrawingsLightVerticalAndRight;
+ }
+ }
+
 node::per_process::Debug(node::DebugCategory::PERMISSION_MODEL,
-"%s Prefix: %s\n",
- whitespace,
- node->prefix);
-if (node->children.size()) {
-size_t child = 0;
-for (constauto& pair : node->children) {
- ++child;
-node::per_process::Debug(node::DebugCategory::PERMISSION_MODEL,
-"%s Child(%s): %s\n",
- whitespace,
- child,
-std::string(1, pair.first));
-PrintTree(pair.second, spaces + 2);
+"%s%s\n",
+ indent.c_str(),
+ node->prefix.c_str());
+ }
+
+if (node->children.size() > 0) {
+size_t count = 0;
+size_t total = node->children.size();
+
+ std::string next_branch_prefix;
+if (depth > 0) {
+ next_branch_prefix = branch_prefix;
+if (is_last) {
+ next_branch_prefix += "";
+ } else {
+ next_branch_prefix += "│ ";
  }
-node::per_process::Debug(node::DebugCategory::PERMISSION_MODEL,
-"%s End of tree - child(%s)\n",
- whitespace,
- child);
- } else {
-node::per_process::Debug(node::DebugCategory::PERMISSION_MODEL,
-"%s End of tree: %s\n",
- whitespace,
- node->prefix);
+ }
+
+for (constauto& pair : node->children) {
+ count++;
+bool child_is_last = (count == total);
+PrintTree(pair.second, depth + 1, next_branch_prefix, child_is_last);
  }
  }
 }