Method readLine

TheForceEngine/TFE_System/parser.cpp:77–165

Read the next non-comment/whitespace line.

// Read the next non-comment/whitespace line.
const char* TFE_Parser::readLine(size_t& bufferPos, bool skipLeadingWhitespace, bool commentOnlyAtBeginning)
{
	if (bufferPos >= m_bufferLen || m_bufferLen < 1) { return nullptr; }

	// Keep reading lines until either one has real content or we reach the end of the buffer.
	bool lineHasContent = false;
	s32 skip = -1;
	while (!lineHasContent && bufferPos < m_bufferLen)
	{
		s_line[0] = 0;
		size_t linePos = 0;
		bool inComment = false;
		for (size_t i = bufferPos; i < m_bufferLen; i++)
		{
			bufferPos = i + 1;

			if (m_enableBlockComments && i > 0 && m_buffer[i-1] == '*' && m_buffer[i] == '/')
			{
				m_blockComment = false;
			}
			else if (m_enableBlockComments && m_buffer[i] == '/' && m_buffer[i+1] == '*')
			{
				m_blockComment = true;
			}
			else if (m_buffer[i] == '\n' || m_buffer[i] == '\r')
			{
				// search for the next valid character, then end it.
				for (size_t ii = i + 1; ii < m_bufferLen; ii++)
				{
					if (m_buffer[ii] != '\n' && m_buffer[ii] != '\r')
					{
						bufferPos = ii;
						break;
					}
				}
				break;
			}
			else if (!inComment && !m_blockComment)
			{
				// is this the beginning of a comment?
				if (!commentOnlyAtBeginning)
				{
					inComment = isComment(m_buffer + i);
				}

				// if not in a comment, go ahead and add to the line.
				if (!inComment)
				{
					if (m_convertToUppercase)
					{
						s_line[linePos++] = toupper(m_buffer[i]);
					}
					else
					{
						s_line[linePos++] = m_buffer[i];
					}
					assert(linePos <= 4096);
				}