Roll IDL to Dartium37 (r181268)

bindings/dart/gyp/scripts/build_dart_snapshot.py

+#!/usr/bin/python
+#
+# Copyright (C) 2011 Google Inc. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+# notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+# copyright notice, this list of conditions and the following disclaimer
+# in the documentation and/or other materials provided with the
+# distribution.
+#     * Neither the name of Google Inc. nor the names of its
+# contributors may be used to endorse or promote products derived from
+# this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# build_dart_snapshot.py generates two C++ files: DartSnapshot.cpp
+# with a constant which is a snapshot of major DOM libs an
+# DartResolver.cpp which is a resolver for dart:html library.
+
+import os.path
+import subprocess
+import sys
+
+
+def main(args):
+    assert(len(args) >= 4)
+    dartPath = args[1]
+    dartSnapshotTemplateFile = args[2]
+    outputFilePath = args[3]
+    genSnapshotBinPath = args[4]
+    snapshottedLibPaths = args[5:]
+
+    def path(*components):
+        return os.path.abspath(os.path.join(*components))
+
+    def dartName(path):
+        # Translates <dirs>/foo_dartium.dart into foo.
+        return (os.path.splitext(os.path.split(path)[1])[0]
+                .replace('_dartium', ''))
+
+    snapshottedLibs = [(dartName(p), path(p))
+                       for p in snapshottedLibPaths]
+
+    # Generate a Dart script to build the snapshot from.
+    snapshotScriptName = os.path.join(outputFilePath, 'snapshotScript.dart')
+    with file(snapshotScriptName, 'w') as snapshotScript:
+        snapshotScript.write('library snapshot;\n')
+        for name, _ in snapshottedLibs:
+            # Skip internal libraries - they should be indirectly imported via the public ones.
+            if not name.startswith('_'):
+                snapshotScript.write('import \'dart:%(name)s\' as %(name)s;\n' % {'name': name})
+
+    binarySnapshotFile = path(outputFilePath, 'DartSnapshot.bin')
+
+    # Build a command to generate the snapshot bin file.
+    command = [
+        'python',
+        path(dartPath, 'runtime', 'tools', 'create_snapshot_bin.py'),
+        '--executable=%s' % path(genSnapshotBinPath),
+        '--output_bin=%s' % binarySnapshotFile,
+        '--script=%s' % snapshotScriptName,
+    ]
+    command.extend(['--url_mapping=dart:%s,%s' % lib for lib in snapshottedLibs])
+
+    pipe = subprocess.Popen(command,
+                            stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+    out, error = pipe.communicate()
+    if (pipe.returncode != 0):
+        raise Exception('Snapshot bin generation failed: %s/%s' % (out, error))
+
+    # Build a command to generate the snapshot file.
+    command = [
+        'python',
+        path(dartPath, 'runtime', 'tools', 'create_snapshot_file.py'),
+        '--input_cc=%s' % dartSnapshotTemplateFile,
+        '--input_bin=%s' % binarySnapshotFile,
+        '--output=%s' % path(outputFilePath, 'DartSnapshot.bytes'),
+    ]
+
+    pipe = subprocess.Popen(command,
+                            stdout=subprocess.PIPE,
+                            stderr=subprocess.PIPE)
+    out, error = pipe.communicate()
+    if (pipe.returncode != 0):
+        raise Exception('Snapshot file generation failed: %s/%s' % (out, error))
+
+    snapshotSizeInBytes = os.path.getsize(binarySnapshotFile)
+    productDir = os.path.dirname(genSnapshotBinPath)
+    snapshotSizeOutputPath = os.path.join(productDir, 'snapshot-size.txt')
+    with file(snapshotSizeOutputPath, 'w') as snapshotSizeFile:
+        snapshotSizeFile.write('%d\n' % snapshotSizeInBytes)
+
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))