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/**
* Copyright (c) 2026 Alexey Gavrilov <alexey.gavrilov@mail.com>
*
* This file is part of ObjectiveOS.
*
* ObjectiveOS is free software: you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* ObjectiveOS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* ObjectiveOS. If not, see <https://www.gnu.org/licenses/>.
*/
#include "StringOperations.h"
MemArea::MemArea()
{
start = final = NULL;
};
MemArea::MemArea(const uintptr start, const uintptr final)
{
this->start = start;
this->final = final;
if(!valid())
{
*this = MemArea();
}
};
uintptr MemArea::begin()
{
return start;
}
uintptr MemArea::end()
{
if(start == final) return start;
else return final + 1;
};
bool MemArea::valid()
{
if(start > final
or start == NULL
or final == NULL) return false;
else return true;
};
uint32 StringOperations::sequenceSize(const char *chars)
{
uint32 indx = 0;
while(chars[indx++]){}
return --indx;
};
void *StringOperations::findInMemory(const char *sequence, MemArea memory)
{
if(sequence == nullptr or !memory.valid()) return NULL;
uint32 seqIndx = 0;
for(MemArea::iterator it = memory.begin(); it != memory.end(); it++)
{
char ch = sequence[seqIndx], chMem = (*((char *)it));
if(ch == '\0') return (void *)(it - sequenceSize(sequence));
else if(ch != chMem)
{
seqIndx = 0;
}
else if(ch == chMem)
{
seqIndx++;
}
}
return NULL;
};
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