1 files changed, 253 insertions, 0 deletions
diff --git a/Kernel/Source/Utils.cxx b/Kernel/Source/Utils.cxx
new file mode 100644
index 00000000..f621594d
--- /dev/null
+++ b/Kernel/Source/Utils.cxx
@@ -0,0 +1,253 @@
+/* -------------------------------------------
+
+    Copyright SoftwareLabs
+
+------------------------------------------- */
+
+#include <NewKit/Utils.hpp>
+#include <KernelKit/DebugOutput.hpp>
+#include <cstddef>
+
+namespace NewOS
+{
+	Int rt_string_cmp(const Char* src, const Char* cmp, Size size)
+	{
+		Int32 counter = 0;
+
+		for (Size index = 0; index < size; ++index)
+		{
+			if (src[index] != cmp[index])
+				++counter;
+		}
+
+		return counter;
+	}
+
+	void rt_zero_memory(voidPtr pointer, Size len)
+	{
+		rt_set_memory(pointer, 0, len);
+	}
+
+	Size rt_string_len(const Char* str, SizeT _len)
+	{
+		if (*str == '\0')
+			return 0;
+
+		Size len{0};
+		while (str[len] != '\0')
+		{
+			if (len > _len)
+			{
+				break;
+			}
+
+			++len;
+		}
+
+		return len;
+	}
+
+	Size rt_string_len(const Char* ptr)
+	{
+		if (!ptr)
+			return 0;
+
+		SizeT cnt = 0;
+
+		while (*ptr != (Char)0)
+		{
+			++ptr;
+			++cnt;
+		}
+
+		return cnt;
+	}
+
+	voidPtr rt_set_memory(voidPtr src, char value, Size len)
+	{
+		if (!src || len < 1)
+			return nullptr;
+		char* start = reinterpret_cast<Char*>(src);
+
+		while (len)
+		{
+			*start = value;
+			++start;
+			--len;
+		}
+
+		return (voidPtr)start;
+	}
+
+	Int rt_move_memory(const voidPtr src, voidPtr dst, Size len)
+	{
+		if (len < 1)
+			return -2;
+		if (!src || !dst)
+			return -1;
+
+		char* srcChr  = reinterpret_cast<Char*>(src);
+		char* dstChar = reinterpret_cast<Char*>(dst);
+		Size  index	  = 0;
+
+		while (index < len)
+		{
+			dstChar[index] = srcChr[index];
+			srcChr[index]  = 0;
+
+			++index;
+		}
+
+		return 0;
+	}
+
+	Int rt_copy_memory(const voidPtr src, voidPtr dst, Size len)
+	{
+		if (len < 1)
+			return -2;
+
+		char* srcChr  = reinterpret_cast<char*>(src);
+		char* dstChar = reinterpret_cast<char*>(dst);
+		Size  index	  = 0;
+
+		while (index < len)
+		{
+			dstChar[index] = srcChr[index];
+			++index;
+		}
+
+		return index;
+	}
+
+	const Char* alloc_string(const Char* text)
+	{
+		if (!text)
+			return nullptr;
+
+		const Char* string = new Char[rt_string_len(text)];
+		if (!string)
+			return nullptr;
+
+		voidPtr vText = reinterpret_cast<voidPtr>(const_cast<char*>(text));
+		voidPtr vStr  = reinterpret_cast<voidPtr>(const_cast<char*>(string));
+		rt_copy_memory(vText, vStr, rt_string_len(text));
+
+		return string;
+	}
+
+	Int rt_to_uppercase(Int character)
+	{
+		if (character >= 'a' && character <= 'z')
+			return character - 0x20;
+
+		return character;
+	}
+
+	Int rt_to_lower(Int character)
+	{
+		if (character >= 'A' && character <= 'Z')
+			return character + 0x20;
+
+		return character;
+	}
+
+	bool rt_to_string(Char* str, Int limit, Int base)
+	{
+		if (limit == 0)
+			return false;
+
+		Int copy_limit = limit;
+		Int cnt		   = 0;
+		Int ret		   = base;
+
+		while (limit != 1)
+		{
+			ret		 = ret % 10;
+			str[cnt] = ret;
+
+			++cnt;
+			--limit;
+			--ret;
+		}
+
+		str[copy_limit] = '\0';
+		return true;
+	}
+
+	Boolean is_space(Char chr)
+	{
+		return chr == ' ';
+	}
+
+	Boolean is_newln(Char chr)
+	{
+		return chr == '\n';
+	}
+
+	voidPtr rt_string_in_string(const char* in, const char* needle)
+	{
+		for (size_t i = 0; i < rt_string_len(in); ++i)
+		{
+			if (rt_string_cmp(in + i, needle, rt_string_len(needle)) == 0)
+				return reinterpret_cast<voidPtr>(const_cast<char*>(in + i));
+		}
+
+		return nullptr;
+	}
+
+	// @brief Checks for a string start at the character.
+
+	char* rt_string_has_char(char* str, const char chr)
+	{
+		while (*str != chr)
+		{
+			++str;
+
+			if (*str == 0)
+				return nullptr;
+		}
+
+		return str;
+	}
+} // namespace NewOS
+
+////////////////////////////////////////////////////////////////////////////////////////
+/// Exported C functions
+////////////////////////////////////////////////////////////////////////////////////////
+
+/// @brief memset in C++
+EXTERN_C void memset(void* dst, char src, size_t len)
+{
+	NewOS::rt_set_memory(dst, src, len);
+}
+
+/// @brief memcpy in C++
+EXTERN_C void memcpy(void* dst, void* src, size_t len)
+{
+	NewOS::rt_copy_memory(src, dst, len);
+}
+
+/// @brief memmove in C++
+EXTERN_C void* memmove(void* dst, void* src, size_t len)
+{
+	NewOS::rt_copy_memory(src, dst, len);
+	return dst;
+}
+
+/// @brief strlen definition in C++.
+EXTERN_C size_t strlen(const char* whatToCheck)
+{
+	return NewOS::rt_string_len(whatToCheck);
+}
+
+/// @brief memcmp in C++
+EXTERN_C NewOS::SizeT memcmp(void* dst, void* src, size_t len)
+{
+	return NewOS::rt_string_cmp((char*)src, (char*)dst, len);
+}
+
+/// @brief strcmp in C++
+EXTERN_C NewOS::SizeT strcmp(char* dst, char* src, size_t len)
+{
+	return NewOS::rt_string_cmp(src, dst, len);
+}