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#############################################################################
#
# XLConnect
# Copyright (C) 2010-2024 Mirai Solutions GmbH
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
#############################################################################
#############################################################################
#
# Wraps an argument in a list if it not already is a list.
# Further extracts the 'jobj' slot from S4 classes (such as 'workbook'
# and 'cellstyle').
#
# Author: Martin Studer, Mirai Solutions GmbH
#
#############################################################################
wrapList <- function(x) {
if(!is(x, "list")) x <- list(x)
# Extract 'jobj' slot for S4 classes (such as 'workbook' & 'cellstyle')
x <- lapply(x, function(y) {
if(!is(y, "jobjRef") && .hasSlot(y, "jobj")) y@jobj
else y
})
x
}
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