build/copy_tree.gni

# Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
# for details. All rights reserved. Use of this source code is governed by a
# BSD-style license that can be found in the LICENSE file.

_dart_root = rebase_path("..")

# copy_tree() copies a directory tree rooted at `source` to `dest`, which should
# be somewhere under $root_out_dir.
#
# Optional parameters:
# exclude - A comma separated list that is passed to shutil.ignore_patterns()
#           in tools/copy_tree.py.
template("copy_tree") {
  assert(defined(invoker.source), "copy_tree must define 'source'")
  assert(defined(invoker.dest), "copy_tree must define 'dest'")
  source = invoker.source
  dest = invoker.dest
  action(target_name) {
    if (defined(invoker.visibility)) {
      visibility = invoker.visibility
    }

    deps = []
    if (defined(invoker.deps)) {
      deps += invoker.deps
    }

    common_args = [
      "--from",
      rebase_path(source),
      "--to",
      rebase_path(dest),
    ]
    if (defined(invoker.exclude)) {
      common_args += [
        "--exclude",
        invoker.exclude,
      ]
    }

    dry_run_args = common_args + [ "--dry-run" ]
    input_files = exec_script("$_dart_root/tools/copy_tree.py",
                              dry_run_args,
                              "list lines")
    inputs = input_files
    relative_files = rebase_path(input_files, rebase_path(source))

    output_files = []
    foreach(input, relative_files) {
      output_files += [ "$dest/$input" ]
    }

    outputs = output_files
    script = "$_dart_root/tools/copy_tree.py"
    args = common_args
  }
}