# Copyright 2020 Observational Health Data Sciences and Informatics
#
# This file is part of OhdsiSharing
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# Borrowed from devtools: https://github.com/hadley/devtools/blob/ba7a5a4abd8258c52cb156e7b26bb4bf47a79f0b/R/utils.r#L44
is_installed <- function(pkg, version = 0) {
installed_version <- tryCatch(utils::packageVersion(pkg), error = function(e) NA)
!is.na(installed_version) && installed_version >= version
}
# Borrowed and adapted from devtools:
# https://github.com/hadley/devtools/blob/ba7a5a4abd8258c52cb156e7b26bb4bf47a79f0b/R/utils.r#L74
ensure_installed <- function(pkg) {
if (!is_installed(pkg)) {
msg <- paste0(sQuote(pkg), " must be installed for this functionality.")
if (interactive()) {
message(msg, "\nWould you like to install it?")
if (menu(c("Yes", "No")) == 1) {
install.packages(pkg)
} else {
stop(msg, call. = FALSE)
}
} else {
stop(msg, call. = FALSE)
}
}
}
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