Add bstring type

src/ox/std/CMakeLists.txt

@@ -20,6 +20,7 @@ install(
 		byteswap.hpp
 		memops.hpp
 		random.hpp
+		string.hpp
 		strops.hpp
 		std.hpp
 		types.hpp

src/ox/std/std.hpp

@@ -12,4 +12,5 @@
 #include "memops.hpp"
 #include "random.hpp"
 #include "strops.hpp"
+#include "string.hpp"
 #include "types.hpp"

src/ox/std/string.hpp

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2015 - 2017 gtalent2@gmail.com
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include "types.hpp"
+
+namespace ox {
+
+// Bounded String
+template<size_t buffLen>
+class bstring {
+	private:
+		uint8_t m_buff[buffLen];
+
+	public:
+		bstring(const char *str);
+
+		const bstring &operator=(const char *str);
+
+		const bstring &operator=(char *str);
+
+		/**
+		 * Returns the number of characters in this string.
+		 */
+		size_t len();
+
+		/**
+		 * Returns the number of bytes used for this string.
+		 */
+		size_t size();
+};
+
+template<size_t size>
+bstring<size>::bstring(const char *str) {
+	*this = str;
+}
+
+template<size_t size>
+const bstring<size> &bstring<size>::operator=(const char *str) {
+	return *this = (const char*) str;
+}
+
+template<size_t size>
+const bstring<size> &bstring<size>::operator=(char *str) {
+	auto strLen = ox_strlen(str) + 1;
+	if (size() < strLen) {
+		strLen = size();
+	}
+	ox_memcpy(m_buff, str, strLen);
+	// make sure last element is a null terminator
+	m_buff[size() - 1] = 0;
+	return *this;
+}
+
+template<size_t buffLen>
+size_t bstring<buffLen>::len() {
+	size_t length = 0;
+	for (size_t i = 0; i < buffLen; i++) {
+		auto b = m_buff[i];
+		if (b) {
+			if ((b & (1 << 8)) == 0) { // normal ASCII character
+				length++;
+			} else if ((b & (256 << 6)) == (256 << 6)) { // start of UTF-8 character
+				length++;
+			}
+		} else {
+			break;
+		}
+	}
+	return length;
+}
+
+template<size_t buffLen>
+size_t bstring<buffLen>::size() {
+	return buffLen;
+}
+
+}

src/ox/std/types.hpp

@@ -5,6 +5,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
  */
+
 #pragma once
 
 typedef signed char        int8_t;