From 6a01c57c362c49b9e8d06a1f55a9540abbe65acb Mon Sep 17 00:00:00 2001
From: Relintai <relintai@gmail.com>
Date: Sat, 26 Dec 2020 17:49:59 +0100
Subject: [PATCH] Added a new Utils class containing helper methods.

---
 core/utils.cpp | 127 +++++++++++++++++++++++++++++++++++++++++++++++++
 core/utils.h   |  23 +++++++++
 2 files changed, 150 insertions(+)
 create mode 100644 core/utils.cpp
 create mode 100644 core/utils.h

diff --git a/core/utils.cpp b/core/utils.cpp
new file mode 100644
index 0000000..cda394d
--- /dev/null
+++ b/core/utils.cpp
@@ -0,0 +1,127 @@
+#include "utils.h"
+
+void Utils::newline_to_br(std::string *str) {
+	str_replace(str, "\r\n", "<br>");
+	str_replace(str, "\n", "<br>");
+}
+
+void Utils::bbcode_evaluate_simple(std::string *str) {
+	bbcpp::BBDocumentPtr doc = bbcode((*str));
+
+	bbcpp::BBNodeList n = doc->getChildren();
+
+	str->clear();
+
+	for (uint32_t i = 0; i < n.size(); ++i) {
+		eval_node(str, n[i]);
+	}
+}
+
+bbcpp::BBDocumentPtr Utils::bbcode(const std::string &str) {
+	bbcpp::BBDocumentPtr doc = bbcpp::BBDocument::create();
+
+	doc->load(str);
+
+	return doc;
+}
+
+void Utils::str_replace(std::string *str, const std::string &from, const std::string &to) {
+	if (from.empty())
+		return;
+
+	size_t start_pos = 0;
+	while ((start_pos = str->find(from, start_pos)) != std::string::npos) {
+		str->replace(start_pos, from.length(), to);
+		start_pos += to.length();
+	}
+}
+
+void Utils::eval_node(std::string *str, bbcpp::BBNodePtr node) {
+	switch (node->getNodeType()) {
+		case bbcpp::BBNode::NodeType::TEXT: {
+			bbcpp::BBTextPtr t = node->downCast<bbcpp::BBTextPtr>();
+
+			(*str) += t->getText();
+			break;
+		}
+		case bbcpp::BBNode::NodeType::ELEMENT: {
+			bbcpp::BBElementPtr e = node->downCast<bbcpp::BBElementPtr>();
+
+            eval_element(str, e);
+
+			break;
+		}
+		case bbcpp::BBNode::NodeType::ATTRIBUTE:
+			break;
+		case bbcpp::BBNode::NodeType::DOCUMENT:
+			break;
+	}
+
+	bbcpp::BBNodeList n = node->getChildren();
+
+	for (uint32_t i = 0; i < n.size(); ++i) {
+		eval_node(str, n[i]);
+	}
+}
+
+void Utils::eval_element(std::string *str, bbcpp::BBElementPtr element) {
+	switch (element->getElementType()) {
+		case bbcpp::BBElement::ElementType::SIMPLE: {
+
+            if (element->getNodeName() == "b") {
+                (*str) += "<span style=\"font-weight: bold;\">";
+                return;
+            }
+
+            if (element->getNodeName() == "i") {
+                (*str) += "<span style=\"font-style: italic;\">";
+                return;
+            }
+
+            if (element->getNodeName() == "u") {
+                (*str) += "<span style=\"text-decoration: underline;\">";
+                return;
+            }
+
+            if (element->getNodeName() == "s") {
+                (*str) += "<span style=\"text-decoration: line-through;\">";
+                return;
+            }
+
+
+			break;
+		}
+		case bbcpp::BBElement::ElementType::VALUE: {
+            //NYI
+			break;
+		}
+		case bbcpp::BBElement::ElementType::PARAMETER: {
+			break;
+        }
+		case bbcpp::BBElement::ElementType::CLOSING: {
+            if (element->getNodeName() == "b") {
+                (*str) += "</span>";
+                return;
+            }
+
+            if (element->getNodeName() == "i") {
+                (*str) += "</span>";
+                return;
+            }
+
+            if (element->getNodeName() == "u") {
+                (*str) += "</span>";
+                return;
+            }
+
+            if (element->getNodeName() == "s") {
+                (*str) += "</span>";
+                return;
+            }
+
+
+
+			break;
+        }
+	}
+}
\ No newline at end of file
diff --git a/core/utils.h b/core/utils.h
new file mode 100644
index 0000000..35b853c
--- /dev/null
+++ b/core/utils.h
@@ -0,0 +1,23 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <string>
+
+#include <bbcpp/BBDocument.h>
+
+class Utils {
+    public:
+    static void newline_to_br(std::string *str);
+    //htmlspecialchars
+
+    static void bbcode_evaluate_simple(std::string *str);
+    static bbcpp::BBDocumentPtr bbcode(const std::string &str);
+
+    static void str_replace(std::string *str, const std::string& from, const std::string& to);
+protected:
+    static void eval_node(std::string *str, bbcpp::BBNodePtr node);
+    static void eval_element(std::string *str, bbcpp::BBElementPtr node);
+};
+
+
+#endif
\ No newline at end of file