R/samtoolsView.R

In HenrikBengtsson/aroma.seq: High-Throughput Sequence Analysis using the Aroma Framework

###########################################################################/**
# @RdocDefault samtoolsView
#
# @title "Calls the samtools 'view' command"
#
# \description{
#  @get "title".
# }
#
# @synopsis
#
# \arguments{
#   \item{pathname}{A SAM/BAM file.}
#   \item{pathnameD}{The destination pathname.}
#   \item{...}{Additional arguments specifying samtools 'view' switches
#     passed to @see "systemSamtools".}
#   \item{verbose}{See @see "R.utils::Verbose".}
# }
#
# @author "HB"
#
# @keyword internal
#*/###########################################################################
setMethodS3("samtoolsView", "default", function(pathname, pathnameD, ..., verbose=FALSE) {
  # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  # Validate arguments
  # - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  # Argument 'pathname':
  pathname <- Arguments$getReadablePathname(pathname)

  # Argument 'pathnameD':
  pathnameD <- Arguments$getWritablePathname(pathnameD)

  # Argument 'verbose':
  verbose <- Arguments$getVerbose(verbose)
  if (verbose) {
    pushState(verbose)
    on.exit(popState(verbose))
  }

  verbose && enter(verbose, "Running samtools 'view'")

  # Assert that input files are not overwritten
  .stop_if_not(getAbsolutePath(pathnameD) != getAbsolutePath(pathname))

  res <- systemSamtools("view", "o"=shQuote(pathnameD), shQuote(pathname), ..., verbose=less(verbose, 10))

  verbose && exit(verbose)

  res
}) # samtoolsView()