AuroraRuntime/Include/Aurora/Parse/LineParser.hpp

/***
    Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.

    File: LineParser.hpp
    Date: 2021-6-9
    Author: Reece
***/
#pragma once

namespace Aurora::Parse
{
    static AuString SplitNewlines(const AuString &in, AuFunction<void(const AuString &)> lineCallback, bool returnRemaining)
    {
        AuMach index = 0, startIdx = 0;

        while ((index = in.find("\n", startIdx)) != AuString::npos)
        {
            auto line = in.substr(startIdx, index - startIdx);
            startIdx = index + 1;

            if (line[line.size() - 1] == '\r')
            {
                line.pop_back();
            }

            lineCallback(line);

            if (startIdx >= in.size())
            {
                break;
            }
        }

        if (returnRemaining)
        {
            return in.substr(startIdx);
        }
        else
        {
            lineCallback(in.substr(startIdx));
            return {};
        }
    }

    static void SplitNewlines(const AuString &in, AuFunction<void(const AuString &)> lineCallback)
    {
        SplitNewlines(in, lineCallback, false);
    }
    
    static AuList<AuString> SplitString(const AuString &in, AuUInt16 characters)
    {
        AuList<AuString> ret;
        for (auto i = 0u; i < in.size(); i += characters)
        {
            auto start = i;
            auto end   = AuMin(AuUInt32(in.size()), AuUInt32(i + characters));
            auto len   = end - start;
            ret.push_back(in.substr(start, len));
        }
        return ret;
    }
    
    static AuString SplitStringDelm(const AuString &in, const AuString &delm, AuUInt16 characters)
    {
        AuString ret;
        ret.reserve(in.size());
        for (auto i = 0u; i < in.size(); i += characters)
        {
            AuUInt32 start, end, len;

            if (i != 0)
            {
                ret.insert(ret.size(), delm);
            }

            start = i;
            end   = AuMin(AuUInt32(in.size()), AuUInt32(i + characters));
            len   = end - start;

            ret.insert(ret.size(), in.substr(start, len));
        }
        return ret;
    }
}