Function BuildString

source/common/console/c_dispatch.cpp:516–559

Given an argument vector, reconstitute the command line it could have been produced from.

// Given an argument vector, reconstitute the command line it could have been produced from.
FString BuildString (int argc, FString *argv)
{
	if (argc == 1)
	{
		return *argv;
	}
	else
	{
		FString buf;
		int arg;

		for (arg = 0; arg < argc; arg++)
		{
			if (argv[arg][0] == '\0')
			{ // It's an empty argument, we need to convert it to '""'
				buf << "\"\" ";
			}
			else if (strchr(argv[arg].GetChars(), '"'))
			{ // If it contains one or more quotes, we need to escape them.
				buf << '"';
				ptrdiff_t substr_start = 0, quotepos;
				while ((quotepos = argv[arg].IndexOf('"', substr_start)) >= 0)
				{
					if (substr_start < quotepos)
					{
						buf << argv[arg].Mid(substr_start, quotepos - substr_start);
					}
					buf << "\\\"";
					substr_start = quotepos + 1;
				}
				buf << argv[arg].Mid(substr_start) << "\" ";
			}
			else if (strchr(argv[arg].GetChars(), ' '))
			{ // If it contains a space, it needs to be quoted.
				buf << '"' << argv[arg] << "\" ";
			}
			else
			{
				buf << argv[arg] << ' ';
			}
		}
		return buf;
	}
}

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