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# 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 $root_out_dir.
#
# Optional parameters:
# exclude - A comma separated list that is passed to shutil.ignore_patterns()
# in tools/copy_tree.py.
template("_copy_tree") {
assert(defined(invoker.source), "copy_tree must define 'source'")
assert(defined(invoker.dest), "copy_tree must define 'dest'")
assert(defined(invoker.inputs), "copy_tree must define 'inputs'")
source = invoker.source
dest = invoker.dest
inputs = invoker.inputs
action(target_name) {
if (defined(invoker.visibility)) {
visibility = invoker.visibility
}
deps = []
if (defined(invoker.deps)) {
deps += invoker.deps
}
common_args = [
"--from",
rebase_path(source),
"--to",
rebase_path(dest),
]
if (defined(invoker.exclude)) {
common_args += [
"--exclude",
invoker.exclude,
]
}
relative_files = rebase_path(inputs, rebase_path(source))
output_files = []
foreach(input, relative_files) {
output_files += [ "$dest/$input" ]
}
outputs = output_files
script = "$_dart_root/tools/copy_tree.py"
args = common_args
}
}
# copy_trees() arranges to invoke copy_tree.py only once to gather the list of
# input source files for every _copy_tree() target. It takes a list of scopes as
# a parameter. The scopes should contain the following mappings.
#
# target: The target name for the _copy_tree() target.
# visibility: The visibility for the _copy_tree() target.
# source: The source directory relative to this directory.
# dest: The destination directory for the _copy_tree() target.
# deps: Any deps needed for the _copy_tree() target.
# ignore_patterns: Patterns to ignore when walking the directory tree.
# This should be '{}' if nothing should be ignored.
#
# copy_trees() will then make sure each invocation of _copy_tree() has the
# correct 'inputs' parameter
template("copy_trees") {
assert(defined(invoker.sources), "$target_name must define 'source'")
sources = invoker.sources
copy_tree_source_paths = []
foreach(copy_tree_spec, sources) {
copy_tree_source_paths += [
rebase_path(copy_tree_spec.source),
copy_tree_spec.ignore_patterns,
]
}
# Evaluate script output as GN, producing a scope containing a single value
# "sources"
copy_tree_inputs_scope = exec_script("$_dart_root/tools/copy_tree.py",
[ "--gn" ] + copy_tree_source_paths,
"scope")
# A list of lists of input source files for copy_tree.
copy_tree_inputs = copy_tree_inputs_scope.sources
copy_tree_inputs_index = 0
foreach(copy_tree_spec, sources) {
_copy_tree(copy_tree_spec.target) {
visibility = copy_tree_spec.visibility
source = copy_tree_spec.source
dest = copy_tree_spec.dest
inputs = copy_tree_inputs[copy_tree_inputs_index]
if (defined(copy_tree_spec.deps)) {
deps = copy_tree_spec.deps
}
if (copy_tree_spec.ignore_patterns != "{}") {
exclude = copy_tree_spec.ignore_patterns
}
}
copy_tree_inputs_index = copy_tree_inputs_index + 1
}
}