From c5eba3a40b563a9bb91e7e061934d3585c6be5b6 Mon Sep 17 00:00:00 2001
From: Stoycho Kyosev <stoycho.kk@gmail.com>
Date: Wed, 30 Nov 2022 16:44:47 +0200
Subject: Add Seminar08

---
 Seminar08/tree-utils.h | 85 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 Seminar08/tree-utils.h

(limited to 'Seminar08/tree-utils.h')

diff --git a/Seminar08/tree-utils.h b/Seminar08/tree-utils.h
new file mode 100644
index 0000000..26c9596
--- /dev/null
+++ b/Seminar08/tree-utils.h
@@ -0,0 +1,85 @@
+#ifndef TREE_UTIL_IMPL
+#define TREE_UTIL_IMPL
+
+#include<iostream>
+#include<string>
+#include<fstream>
+
+// Важни неща:
+
+template<class T>
+struct Tree {
+    T data;
+    Tree* left;
+    Tree* right;
+
+    Tree(T data, Tree<T>* l = nullptr, Tree<T>* r = nullptr) : data {data}, left {l}, right {r} {}
+};
+
+template<class T>
+void freeTree(Tree<T>* t) {
+    if(t == nullptr)
+        return;
+    freeTree(t->left);
+    freeTree(t->right);
+    delete t;
+}
+
+// Неща за мое удобство, не е нужно да ги четете:
+
+// Взето от:
+// https://stackoverflow.com/questions/36802354/print-binary-tree-in-a-pretty-way-using-c
+template<class T>
+void printBT(const std::string& prefix, const Tree<T>* node, bool isLeft) {
+    if(node != nullptr) {
+        std::cout << prefix;
+
+        std::cout << (isLeft ? "|--" : "`--" );
+
+        std::cout << node->data << std::endl;
+
+        printBT( prefix + (isLeft ? "|   " : "    "), node->left, true);
+        printBT( prefix + (isLeft ? "|   " : "    "), node->right, false);
+    }
+}
+
+template<class T>
+void printTree(const Tree<T>* node) {
+    printBT("", node, false);    
+}
+
+// Следващите две функции са малко по - красив начин да изпринтим дърво, но го конвертира къмм LaTeX документ
+// Когато извикате exportToTex("file.txt") ще ви създаде фейл с код. 
+// Пейстнете кода в overleaf.com и ще ви излезе дървото.
+
+// Не е перфектно но пък е по - удобно от конзолата. Това е за демонстрации, не е нужно да го учите или разбирате.
+template<class T>
+void recFillFileStream(std::ofstream& outFile, const Tree<T>* r) {
+	if(r == nullptr)
+		return;
+
+	outFile << "[" << r->data << " ";
+	recFillFileStream(outFile, r->left);
+	recFillFileStream(outFile, r->right);
+
+	outFile << "]";
+}
+
+template<class T>
+void exportToTex(const Tree<T>* root, const char* filePath) {
+	std::ofstream outFile(filePath, std::ios::trunc);
+
+	outFile << "\\documentclass[tikz,border=10pt]{standalone}" << std::endl;
+	outFile << "\\usepackage[linguistics]{forest}" << std::endl;
+	outFile << "\\begin{document}" << std::endl;
+	outFile << "\\begin{forest}" << std::endl;
+
+	recFillFileStream(outFile, root);
+
+	outFile << "\\end{forest}";
+	outFile << "\\end{document}";
+
+    outFile.close();
+}
+
+#endif
\ No newline at end of file
-- 
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