#
# This file introduces templates for calling extract_archive_contents.py
#
# extract_archive_contents.py behaves like CMake's file(ARCHIVE_EXTRACT)
#
# Parameters:
#   archive (required) [string]
#
#   files (required) [list of strings]
#       Relative paths to the root of the archive of files to extract
#
#   directory (required) [string]
#       Output directory root for all the files
#
#   paths (optional) [list of strings]
#       Relative paths to the root of the archive of directories to extract
#
# Example use:
#
#    extract_archive_contents("my_files") {
#        archive = "$root_gen_dir/MyModule/xyz.tar.gz"
#        directory = "$root_gen_dir/MyModule"
#        files = [
#           "file_one.txt",
#           "file_two"
#        ]
#        paths = [ "some_dir" ]
#    }
#

template("extract_archive_contents") {
  assert(defined(invoker.archive), "must set 'archive' in $target_name")
  assert(defined(invoker.files) || defined(invoker.paths),
         "must set 'files' and/or 'paths' in $target_name")
  assert(defined(invoker.directory), "must set 'directory' in $target_name")

  action(target_name) {
    script = "//Meta/gn/build/extract_archive_contents.py"

    paths = []
    if (defined(invoker.paths)) {
      foreach(path, invoker.paths) {
        paths += [ path + "/" ]
      }
    }
    files = []
    if (defined(invoker.files)) {
      files = invoker.files
    }
    stamp_file = invoker.directory + "$target_name.stamp"

    sources = invoker.archive
    outputs = []
    args = [
             "-d",
             rebase_path(invoker.directory, root_build_dir),
             "-s",
             rebase_path(stamp_file, root_build_dir),
             rebase_path(sources[0], root_build_dir),
           ] + files + paths
    foreach(file, files) {
      outputs += [ invoker.directory + file ]
    }
    outputs += [ stamp_file ]

    forward_variables_from(invoker,
                           [
                             "configs",
                             "deps",
                             "public_configs",
                             "public_deps",
                             "testonly",
                             "visibility",
                           ])
  }
}