Function CmdConfigSetDebugDir

source/Debugger/Debug.cpp:4418–4521

Usage: CD " " CD ".." Note: Subdirectory MUST be quoted with double quotes. ===========================================================================

// Note: Subdirectory MUST be quoted with double quotes.
//===========================================================================
Update_t CmdConfigSetDebugDir (int nArgs)
{
	if ( nArgs > 1 )
		return Help_Arg_1( CMD_CONFIG_SET_DEBUG_DIR );

	if ( nArgs == 0 )
		return CmdConfigGetDebugDir(0);

	// http://msdn.microsoft.com/en-us/library/aa365530(VS.85).aspx

	// TODO: Support paths prefixed with "\\?\" (for long/unicode pathnames)
	if (strncmp("\\\\?\\", g_aArgs[1].sArg, 4) == 0)
		return Help_Arg_1( CMD_CONFIG_SET_DEBUG_DIR );

	std::string sPath;

	if (g_aArgs[1].sArg[1] == ':')			// Absolute
	{
		sPath = g_aArgs[1].sArg;
	}
	else if (g_aArgs[1].sArg[0] == PATH_SEPARATOR)	// Absolute
	{
		if (g_sCurrentDir[1] == ':')
		{
			sPath = g_sCurrentDir.substr(0, 2) + g_aArgs[1].sArg;	// Prefix with drive letter & colon
		}
		else
		{
			sPath = g_aArgs[1].sArg;
		}
	}
	else									// Relative
	{
		std::string SAME_DIR( "." ); SAME_DIR += PATH_SEPARATOR;
		std::string UP_DIR  ( ".."); UP_DIR   += PATH_SEPARATOR;
		std::string sNewPath( g_aArgs[1].sArg );

		// if new path doesn't have a trailing slash, append one
		if (*(sNewPath.rbegin()) != PATH_SEPARATOR)
			sNewPath += PATH_SEPARATOR;
				
		// Support ".." and various permutations
		//     cd "..\"
		//     cd "abc\..\def\"
		//
		// 1. find next slash in newpath
		// 2. subdir = newpath.substr()
		// 3. if subdir == "..\"
		//        reverse find slash in g_sCurrentDir
		//        g_sCurrentDir = g_sCurrentDir.substr()
		//    else
		//        g_sCurrentDir += subdir
		size_t iPrevSeparator = 0;
		size_t iPathSeparator = 0;

		while ((iPathSeparator = sNewPath.find( PATH_SEPARATOR, iPrevSeparator )) != std::string::npos)
		{
#if _DEBUG