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/* -------------------------------------------
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);
}
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