Method FileSetAttrib

source/script2.cpp:8477–8535

};

ResultType Line::FileSetAttrib(LPTSTR aAttributes, LPTSTR aFilePattern
	, FileLoopModeType aOperateOnFolders, bool aDoRecurse)
// Returns the number of files and folders that could not be changed due to an error.
{
	if (!*aFilePattern)
		return LineError(ERR_PARAM2_INVALID, FAIL_OR_OK);

	// Convert the attribute string to three bit-masks: add, remove and toggle.
	FileSetAttribData attrib;
	DWORD mask;
	int op = 0;
	attrib.and_mask = 0xFFFFFFFF; // Set default: keep all bits.
	attrib.xor_mask = 0; // Set default: affect none.
	for (LPTSTR cp = aAttributes; *cp; ++cp)
	{
		switch (ctoupper(*cp))
		{
		case '+':
		case '-':
		case '^':
			op = *cp;
		case ' ':
		case '\t':
			continue;
		default:
			return LineError(ERR_PARAM1_INVALID, FAIL_OR_OK, cp);
		// Note that D (directory) and C (compressed) are currently not supported:
		case 'R': mask = FILE_ATTRIBUTE_READONLY; break;
		case 'A': mask = FILE_ATTRIBUTE_ARCHIVE; break;
		case 'S': mask = FILE_ATTRIBUTE_SYSTEM; break;
		case 'H': mask = FILE_ATTRIBUTE_HIDDEN; break;
		// N: Docs say it's valid only when used alone.  But let the API handle it if this is not so.
		case 'N': mask = FILE_ATTRIBUTE_NORMAL; break;
		case 'O': mask = FILE_ATTRIBUTE_OFFLINE; break;
		case 'T': mask = FILE_ATTRIBUTE_TEMPORARY; break;
		}
		switch (op)
		{
		case '+':
			attrib.and_mask &= ~mask; // Reset bit to 0.
			attrib.xor_mask |= mask; // Set bit to 1.
			break;
		case '-':
			attrib.and_mask &= ~mask; // Reset bit to 0.
			attrib.xor_mask &= ~mask; // Override any prior + or ^.
			break;
		case '^':
			attrib.xor_mask ^= mask; // Toggle bit.  ^= vs |= to invert any prior + or ^.
			// Leave and_mask as is, so any prior + or - will be inverted.
			break;
		default: // No +/-/^ specified, so overwrite attributes (equal and opposite to FileGetAttrib).
			attrib.and_mask = 0; // Reset all bits to 0.
			attrib.xor_mask |= mask; // Set bit to 1.  |= to accumulate if multiple attributes are present.
			break;
		}
	}
	FilePatternApply(aFilePattern, aOperateOnFolders, aDoRecurse, FileSetAttribCallback, &attrib);
	return OK;