abyte_array.cpp

/*****************************************************************************

This is part of Alterlib - the free code collection under the MIT License
------------------------------------------------------------------------------
Copyright (C) 2006-2023 Maxim L. Grishin  (altmer@arts-union.ru)

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*****************************************************************************/

#include "abyte_array.h"
#include <ctype.h>

using namespace alt;

byteArray byteArray::operator+(const byteArray &val) const
{
    if(!val.data.size())return *this;
    if(!data.size())return val;
    int nsiz=val.data.size()+data.size();

    byteArray tmp(nsiz);
    utils::memcpy(tmp.data(),data(),data.size());
    utils::memcpy(&tmp.data[data.size()],val.data(),val.data.size());
    return tmp;
}

uint8 _adata_make_half_hex(uint8 val, bool up)
{
    if(val<10)return '0'+val;
    if(up)return 'A'+val-10;
    return 'a'+val-10;
}

string byteArray::toAnsiView(const char replacer)
{
    string rv;
    for(int i=0;i<data.size();i++)
    {
        if(isprint(data[i]))
            rv.append(data[i]);
        else
            rv.append(replacer);
    }
    return rv;
}

string byteArray::toCPPArray(string name, bool up_case)
{
    string rv="static const unsigned char "+name+"[] =\r\n{";

    for(int i=0;i<data.size();i++)
    {
        if(!(i&0xf))rv+="\r\n\t";
        rv+="0x";
        uint8 val=data[i];
        rv.append(_adata_make_half_hex(val>>4,up_case));
        rv.append(_adata_make_half_hex(val&0xf,up_case));
        if(i<data.size()-1)rv+=",";
    }

    return rv+"\r\n};\r\n";
}

string byteArray::binToHex(const void *data, uint size, bool up_case, int sep, string insert)
{
    string rv;
    if(!data || !size)return rv;

    rv.reserve(size*2+(sep?(size/sep)*insert.size():0));
    for(uint i=0;i<size;i++)
    {
        uint8 val=((const uint8*)data)[i];
        if(sep && !(i%sep) && i)
        {
            rv+=insert;
        }
        rv.append(_adata_make_half_hex(val>>4,up_case));
        rv.append(_adata_make_half_hex(val&0xf,up_case));
    }
    return rv;
}

string byteArray::toHex(bool up_case, int sep, string insert)
{
    string rv;
    if(!data.size())return rv;

    rv.reserve(data.size()*2+(sep?(data.size()/sep)*insert.size():0));
    for(int i=0;i<data.size();i++)
    {
        uint8 val=data[i];
        if(sep && !(i%sep) && i)
        {
            rv+=insert;
        }
        rv.append(_adata_make_half_hex(val>>4,up_case));
        rv.append(_adata_make_half_hex(val&0xf,up_case));
    }
    return rv;
}

byteArray byteArray::fromHex(const char *buff, int size)
{
    byteArray rv;

    if(size<0)size=utils::strlen(buff);
    rv.resize((size+1)>>1);

    for(int i=size-1;i>=0;i--)
    {
        uint8 half=0;
        if(buff[i]>='0' && buff[i]<='9')
        {
            half=buff[i]-'0';
        }
        else if(buff[i]>='A' && buff[i]<='F')
        {
            half=buff[i]-'A'+10;
        }
        else if(buff[i]>='a' && buff[i]<='f')
        {
            half=buff[i]-'a'+10;
        }

        if((i^size)&1)rv.data[i>>1]=half;
        else rv.data[i>>1]|=half<<4;
    }

    return rv;
}