Function MsgPrint

src/common/classes/MsgPrint.cpp:235–317

Prints the whole chain of arguments, according to format and in the specified stream.

// Prints the whole chain of arguments, according to format and in the specified stream.
int MsgPrint(BaseStream& out_stream, const char* format, const SafeArg& arg, bool userFormatting)
{
	int out_bytes = 0;
	for (const char* iter = format; true; ++iter)
	{
		switch (*iter)
		{
		case 0:
			return out_bytes;

		case '@':
			switch (iter[1])
			{
			case 0:
				if (userFormatting)
					out_bytes += out_stream.write("@", 1);
				else
					out_bytes += out_stream.write("@(EOF)", 6);
				return out_bytes;
			case '@':
				out_bytes += out_stream.write(iter, 1);
				break;
			default:
				{
					const int pos = iter[1] - '0';
					if (pos > 0 && static_cast<FB_SIZE_T>(pos) <= arg.m_count)
						out_bytes += MsgPrintHelper(out_stream, arg.m_arguments[pos - 1]);
					else
					{
						if (userFormatting)
						{
							out_bytes += out_stream.write("@", 1);
							out_bytes += out_stream.write(iter + 1, 1);
						}
						else if (pos >= 0 && pos <= 9)
						{
							// Show the missing or out of range param number.
							out_bytes += MsgPrint(out_stream,
								"<Missing arg #@1 - possibly status vector overflow>",
								SafeArg() << pos);
						}
						else // Something not a number following @, invalid.
							out_bytes += out_stream.write("(error)", 7);
					}
				}
			}
			++iter;
			break;

		case '\\':
			switch (iter[1])
			{
			case 0:
				out_bytes += out_stream.write("\\(EOF)", 6);
				return out_bytes;
			case 'n':
				out_bytes += out_stream.write("\n", 1);
				break;