R/flags.R

In Kronephon/itkrtest: ITK in R

#' return ITK directory information
#'
#' call this to get the include path for ITK configuration.
#' this is what needs to be passed to dependent programs.
#'
#' @author Avants BB
#' @examples
#'
#' itkDir()
#'
#' @export itkDir
#' @import Rcpp
itkDir <- function() {
  itkd = get_itk_dir()
  if ( ! file.exists(itkd) && !dir.exists(itkd) )
    print("itkDir: itk dir does not exist")
  itkd = paste0(itkd, "/")
  cat( itkd )
}

get_itk_dir = function() {
  lib_dir = system.file("libs", "lib", "cmake", package="ITKR")
  dirs = list.dirs(path = lib_dir, recursive = FALSE)
  bn = basename(dirs)
  # Keep ITK dirs  
  dirs = dirs[ grepl("^ITK", bn) ]
  if (length(dirs) == 0) {
    stop("No ITK Directory Found!")
  }
  if (length(dirs) == 1) {
    itkd = dirs
  } else {
    bn = basename(dirs)
    bn = strsplit(bn, split = "-")
    bn = sapply(bn, function(x) x[2])
    bn = numeric_version(bn)
    dirs = dirs[order(bn, decreasing = TRUE)]
    itkd = dirs[1]
  }
  return(itkd)
}

#' return ITK installation information
#'
#' call this to get the include path for ITK headers and libraries
#'
#' @author Avants BB
#' @examples
#'
#' itkIncludes()
#'
#' @export itkIncludes
itkIncludes <- function() {
  itklocation<- system.file(
    "libs", "include", paste0("ITK-",itkVersion()),
    package = "ITKR")
  if ( ! file.exists(itklocation) && !dir.exists(itklocation) )
    print("itkIncludes: itk includes do not exist")
  itklocation = paste0(itklocation, "/")
  cat( itklocation )
}

#' return ITK library location
#'
#' call this to get the path to ITK static libaries to which you will link
#'
#' @author Avants BB
#' @examples
#'
#' itkLibs()
#'
#' @export itkLibs
itkLibs <- function() {
  itklibs <- system.file("libs", "lib", package = "ITKR")
  if ( ! file.exists(itklibs) && !dir.exists(itklibs) )
    print("itkLibs: itk libs do not exist")
  itklibs = paste0(itklibs, "/")
  cat( itklibs )
}


#' return ITK compile flags
#'
#' call this to get the compilation flags used for ITK and dependent software
#'
#' @author Avants BB
#' @examples
#'
#' itkCompileFlags()
#'
#' @export itkCompileFlags
itkCompileFlags <- function() {
  cat(" -fPIC -O2  ")
}

#' return ITK version information
#'
#' call this to get the installed ITK version
#'
#' @author Avants BB
#' @examples
#'
#' itkVersion()
#'
#' @export itkVersion
itkVersion <- function() {
  # should update this as versions change
  # "4.11"
  ver = get_itk_dir()
  ver = basename(ver)
  ver = sub("ITK-", "", ver)
  return(ver)
  # "4.13"
  # "5.0"
}