Method SetText

src/buffer.cpp:714–797

Replace the buffer with the text

// Replace the buffer with the text
void ZepBuffer::SetText(const std::string& text, bool initFromFile)
{
    // First, clear it
    Clear();

    bool lastWasSpace = false;
    if (!text.empty())
    {
        // Since incremental insertion of a big file into a gap buffer gives us worst case performance,
        // We build the buffer in a separate array and assign it.  Much faster.
        std::vector<uint8_t> input;

        m_lineEnds.clear();

        // Update the gap buffer with the text
        // We remove \r, we only care about \n
        for (auto& ch : text)
        {
            if (ch == '\r')
            {
                m_fileFlags |= FileFlags::StrippedCR;
            }
            else
            {
                input.push_back(ch);
                if (ch == '\n')
                {
                    m_lineEnds.push_back(ByteIndex(input.size()));
                    lastWasSpace = false;
                }
                else if (ch == '\t')
                {
                    m_fileFlags |= FileFlags::HasTabs;
                    lastWasSpace = false;
                }
                else if (ch == ' ')
                {
                    if (lastWasSpace)
                    {
                        m_fileFlags |= FileFlags::HasSpaceTabs;
                    }
                    lastWasSpace = true;
                }
                else
                {
                    lastWasSpace = false;
                }
            }
        }
        m_workingBuffer.assign(input.begin(), input.end());
    }

    // If file is only tabs, then force tab mode
    if (HasFileFlags(FileFlags::HasTabs) && !HasFileFlags(FileFlags::HasSpaceTabs))
    {
        m_fileFlags = ZSetFlags(m_fileFlags, FileFlags::InsertTabs);
    }