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#' Return location of installed filters
#'
#' This function can be used to find the location of the installed filters.
#' Setting the environment variable HDF5_PLUGIN_PATH to this value will allow
#' other applications that require the the filters to use the versions
#' distributed with this package.
#'
#' @return A character string containing the path where the compiled filters
#' are located.
#' @examples
#' hdf5_plugin_path()
#'
#' @export
hdf5_plugin_path <- function() {
path <- system.file("lib", package="rhdf5filters", mustWork=FALSE)
## record the architecture if it exists
if (nzchar(.Platform$r_arch)) {
arch <- sprintf("/%s", .Platform$r_arch)
} else {
arch <- ""
}
patharch <- paste0(path, arch)
return(patharch)
}
#' Return a list of installed filters
#'
#' This function can be used to produce a vector of the installed filters.
#'
#' @return A character vector containing the names of the installed filters.
#' @examples
#' available_filters()
#'
#' @export
available_filters <- function() {
path <- system.file("lib", package="rhdf5filters", mustWork=FALSE)
object_files <- tools::file_path_sans_ext(list.files(path))
filters <- sub(pattern = "libH5Z", replacement = "", x = object_files)
return(filters)
}
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