Finished day 7 aoc, part 1

advent_of_code/2022/7/main.cpp

@@ -2,7 +2,12 @@
 
 using namespace std;
 
-struct File;
+class Directory;
+
+struct File{
+    string name;
+    long size;
+};
 
 class Directory{
 public:
@@ -12,17 +17,68 @@ public:
     vector<File*> files;
     long container_size;
 
-    Directory (Directory* parent, string name) : parent(parent), name(name){
+    ~Directory(){
+        for(auto d : subdirectories){
+            delete d;
+        }
+        subdirectories.clear();
+        for(auto f : files){
+            delete f;
+        }
+        files.clear();
+    }
+
+    Directory (Directory* parent, const string& name) : parent(parent), name(name){
         subdirectories.clear();
         files.clear();
         container_size = 0;
     }
-};
 
-struct File{
-    string name;
-    long size;
-    Directory* parent;
+    Directory* getDirectoryPointerFromSubdirectories(const string& s) const{
+        for(auto d : subdirectories){
+            if(d->name == s){
+                return d;
+            }
+        }
+
+        return nullptr;
+    }
+
+    long getContainerSize(){
+        if(container_size > 0){
+            // Risky assumption, but then again this is just playground code right
+            return container_size;
+        }
+
+        long result = 0;
+        for(auto f : files){
+            result += f->size;
+        }
+        for(auto s : subdirectories){
+            result += s->getContainerSize();
+        }
+
+        container_size = result;
+        return result;
+    }
+
+    long getAnswer(long max_size){
+        long result = 0;
+        long c = getContainerSize();
+
+        if(c <= max_size){
+            result += c;
+        }
+        for(auto d : subdirectories){
+            result += d->getAnswer(max_size);
+        }
+
+        return result;
+    }
+
+    long getAnswerPartTwo(long max_size){
+        
+    }
 };
 
 using ChangeDirectory = string;
@@ -30,7 +86,7 @@ using List = vector<string>;
 using Command = variant<ChangeDirectory, List>;
 
 int main(){
-    ifstream input_file("test.txt");
+    ifstream input_file("input.txt");
     string line;
 
     vector<Command> commands;
@@ -68,19 +124,49 @@ int main(){
     }
 
     // Setting up initial, empty directory
-    Directory 
+    Directory main_directory(nullptr, "root");
+    Directory* cur_dir = &main_directory;
 
     // Mapping out the file directory from all the commands
-
-
-
     for(auto c : commands){
-        if(c.index() == 0){
-
+        if(c.index() == 0){ // So it is cd command
+            ChangeDirectory dir = get<0>(c);
+            if(dir == "/"){
+                continue;
+            } else if(dir == ".."){
+                if(cur_dir->name != "root"){
+                    cur_dir = cur_dir->parent;
+                }
             } else{
+                auto p = cur_dir->getDirectoryPointerFromSubdirectories(dir);
+                if(p){
+                    cur_dir = p;
+                }
+            }
 
+        } else{ // So it is a ls command
+            List& listing = get<1>(c);
+            for(auto s : listing){
+                stringstream ss(s);
+                string first, second;
+                ss >> first >> second;
+
+                if(first == "dir"){
+                    Directory* child = new Directory(cur_dir, second);
+                    cur_dir->subdirectories.push_back(child);
+                } else{
+                    File* f = new File{second, stol(first)};
+                    cur_dir->files.push_back(f);
                 }
             }
+        }
+    }
+
+    // long result = main_directory.getContainerSize();
+    
+    long result = main_directory.getAnswer(100000);
+
+    cout << result << endl;
 
     // Printing parsed commands
 
@@ -95,5 +181,16 @@ int main(){
     //     }
     // }
 
+    // Printing generated tree
+
+    // cout << "- / (dir)" << endl;
+    // for(auto d : main_directory.subdirectories){
+    //     cout << "\t- " << d->name << "(dir)\n";
+    // }
+    // for(auto f : main_directory.files){
+    //     cout << "\t- " << f->name << " (file, size=" << f->size << ")\n";
+    // }
+
+    // delete cur_dir;
     return 0;
 }