isle/LEGO1/mxstring.cpp
MS 2d9af630ba
lego1: Two more operators for MxString (#53)
Followed the hint from @madebr in #31 that the next function in MxString was operator+. The one after that is operator+= and both are at 100%.

Squashed commits:
* Removed unnecessary consts
* Replaced malloc/free with new/delete, which solved swapped regs in operator=
* Use delete[] when freeing char* m_data
2023-06-27 19:57:30 -07:00

114 lines
2.4 KiB
C++

#include "mxstring.h"
#include <stdlib.h>
#include <string.h>
// OFFSET: LEGO1 0x100ae200
MxString::MxString()
{
// Set string to one char in length and set that char to null terminator
this->m_data = new char[1];
this->m_data[0] = 0;
this->m_length = 0;
}
// OFFSET: LEGO1 0x100ae2a0
MxString::MxString(const MxString &str)
{
this->m_length = str.m_length;
this->m_data = new char[this->m_length + 1];
strcpy(this->m_data, str.m_data);
}
// OFFSET: LEGO1 0x100ae350
MxString::MxString(const char *str)
{
if (str) {
this->m_length = strlen(str);
this->m_data = new char[this->m_length + 1];
strcpy(this->m_data, str);
} else {
this->m_data = new char[1];
this->m_data[0] = 0;
this->m_length = 0;
}
}
// OFFSET: LEGO1 0x100ae420
MxString::~MxString()
{
delete[] this->m_data;
}
// OFFSET: LEGO1 0x100ae490
void MxString::ToUpperCase()
{
strupr(this->m_data);
}
// OFFSET: LEGO1 0x100ae4a0
void MxString::ToLowerCase()
{
strlwr(this->m_data);
}
// OFFSET: LEGO1 0x100ae4b0
MxString &MxString::operator=(MxString *param)
{
if (this->m_data != param->m_data)
{
delete[] this->m_data;
this->m_length = param->m_length;
this->m_data = new char[this->m_length + 1];
strcpy(this->m_data, param->m_data);
}
return *this;
}
// OFFSET: LEGO1 0x100ae510
const MxString &MxString::operator=(const char *param)
{
if (this->m_data != param)
{
delete[] this->m_data;
this->m_length = strlen(param);
this->m_data = new char[this->m_length + 1];
strcpy(this->m_data, param);
}
return *this;
}
// Return type is intentionally just MxString, not MxString&.
// This forces MSVC to add $ReturnUdt$ to the stack for 100% match.
// OFFSET: LEGO1 0x100ae580
MxString MxString::operator+(const char *str)
{
// MxString constructor allocates 1 byte for m_data, so free that first
MxString tmp;
delete[] tmp.m_data;
tmp.m_length = strlen(str) + this->m_length;
tmp.m_data = new char[tmp.m_length + 1];
strcpy(tmp.m_data, this->m_data);
strcpy(tmp.m_data + this->m_length, str);
return MxString(tmp);
}
// OFFSET: LEGO1 0x100ae690
MxString& MxString::operator+=(const char *str)
{
int newlen = this->m_length + strlen(str);
char *tmp = new char[newlen + 1];
strcpy(tmp, this->m_data);
strcpy(tmp + this->m_length, str);
delete[] this->m_data;
this->m_length = newlen;
this->m_data = tmp;
return *this;
}