## RcppMLPACK.package.skeleton.R: makes a skeleton for a package that wants to use RcppMLPACK
##
## Copyright (C) 2016 Qiang Kou
##
## This file is part of RcppMLPACK.
##
## RcppMLPACK 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 2 of the License, or
## (at your option) any later version.
##
## RcppMLPACK 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 RcppMLPACK. If not, see <http://www.gnu.org/licenses/>.
RcppMLPACK.package.skeleton <- function(name="anRpackage", list=character(),
environment=.GlobalEnv,
path=".", force=FALSE,
code_files=character(),
example_code=TRUE) {
env <- parent.frame(1)
if (! length(list)) {
fake <- TRUE
assign( "Rcpp.fake.fun", function(){}, envir = env )
} else {
fake <- FALSE
}
## first let the traditional version do its business
call <- match.call()
call[[1]] <- as.name("package.skeleton")
if ("example_code" %in% names(call)){
## remove the example_code argument
call[["example_code"]] <- NULL
}
if (fake) {
call[["list"]] <- "Rcpp.fake.fun"
}
tryCatch(eval(call, envir=env),
error = function(e) {
stop("error while calling `package.skeleton`")
})
message("\nAdding RcppMLPACK settings")
## now pick things up
root <- file.path(path, name)
## Add Rcpp to the DESCRIPTION
DESCRIPTION <- file.path(root, "DESCRIPTION")
if (file.exists(DESCRIPTION)) {
x <- cbind(read.dcf( DESCRIPTION),
"Imports" = sprintf("Rcpp (>= %s)",
packageDescription("Rcpp")[["Version"]]),
"LinkingTo" = "Rcpp, RcppMLPACK, RcppArmadillo, BH")
write.dcf(x, file=DESCRIPTION)
message(" >> added Imports: Rcpp")
message(" >> added LinkingTo: Rcpp, RcppMLPACK, RcppArmadillo, BH")
}
## add a useDynLib to NAMESPACE,
NAMESPACE <- file.path( root, "NAMESPACE")
lines <- readLines( NAMESPACE )
if (! grepl("useDynLib", lines)) {
lines <- c(sprintf("useDynLib(%s)", name),
"importFrom(Rcpp, evalCpp)", ## ensures Rcpp instantiation
lines)
writeLines(lines, con = NAMESPACE)
message( " >> added useDynLib and importFrom directives to NAMESPACE")
}
## lay things out in the src directory
src <- file.path(root, "src")
if (!file.exists(src)) {
dir.create(src)
}
skeleton <- system.file("skeleton", package="RcppMLPACK")
Makevars <- file.path(src, "Makevars")
if (!file.exists(Makevars)) {
file.copy(file.path(skeleton, "Makevars"), Makevars)
message(" >> added Makevars file with RcppMLPACK settings")
}
Makevars.win <- file.path(src, "Makevars.win")
if (! file.exists( Makevars.win)) {
file.copy(file.path(skeleton, "Makevars.win"), Makevars.win)
message(" >> added Makevars.win file with RcppMLPACK settings")
}
if (example_code) {
file.copy(file.path(skeleton, "kmeans.cpp"), src)
message(" >> added example src file using MLPACK classes")
Rcpp::compileAttributes(root)
message(" >> invoked Rcpp::compileAttributes to create wrappers")
}
if (fake) {
rm("Rcpp.fake.fun", envir=env)
unlink(file.path(root, "R" , "Rcpp.fake.fun.R"))
unlink(file.path(root, "man", "Rcpp.fake.fun.Rd"))
}
invisible(NULL)
}
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