R/checksumIFC.R

In gitdemont/IFC: Tools for Imaging Flow Cytometry

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# This file is released under the GNU General Public License, Version 3, GPL-3 #
# Copyright (C) 2020 Yohann Demont                                             #
#                                                                              #
# It is part of IFC package, please cite:                                      #
# -IFC: An R Package for Imaging Flow Cytometry                                #
# -YEAR: 2020                                                                  #
# -COPYRIGHT HOLDERS: Yohann Demont, Gautier Stoll, Guido Kroemer,             #
#                     Jean-Pierre Marolleau, Loïc Garçon,                      #
#                     INSERM, UPD, CHU Amiens                                  #
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# DISCLAIMER:                                                                  #
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#' @title IFC Files Checksum
#' @description
#' This function returns RIF/CIF checksum.
#' Checksum is the sum of img IFDs (Image Field Directory) offsets of objects 0, 1, 2, 3 and 4.
#' @param fileName path to file.
#' @param ... arguments to pass to \code{\link{checksumDAF}} or \code{\link{checksumXIF}}.
#' @details if fileName is a DAF file, then CIF checksum is computed from images values found in DAF.
#' @return an integer corresponding to IFC file checksum.
#' @export
checksumIFC <- function(fileName, ...) {
  dots=list(...)
  file_extension = getFileExt(fileName)
  assert(file_extension, len = 1, alw = c("daf", "rif", "cif"))
  if(file_extension == "daf") return(checksumDAF(fileName = fileName, ...))
  return(checksumXIF(fileName = fileName, ...))
}