Add a tool that estimates the size of a file after all #includes have been resolved.

tools/include_tracer.py

Index: tools/include_tracer.py
diff --git a/tools/include_tracer.py b/tools/include_tracer.py
new file mode 100755
index 0000000000000000000000000000000000000000..c35b41def50cda455d59b413abf81037f964dfff
--- /dev/null
+++ b/tools/include_tracer.py
@@ -0,0 +1,199 @@
+#!/usr/bin/python
+# Copyright (c) 2010 The Chromium Authors. All rights reserved.

[Evan Martin, 2011/04/18 21:46:47]

2011

[Nico, 2011/04/18 21:54:28]

Done.

+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+# based on an almost identical script by: jyrki@google.com (Jyrki Alakuijala)
+#
+# This script prints out include dependencies in chrome. Since it ignores
+# defines, it gives just a rough estimation of file size.
+#
+# Usage:
+#   python tools/include_tracer.py chrome/browser/ui/browser.h
+
+import os
+import sys
+
+# Created by copying the command line for prerender_browsertest.cc, replacing
+# spaces with newlines, and dropping everything except -F and -I switches.
+# TODO(port): Add windows, linux directories.
+INCLUDE_PATHS = [
+  '',
+  'gpu',
+  'skia/config',
+  'skia/ext',
+  'testing/gmock/include',
+  'testing/gtest/include',
+  'third_party/GTM',
+  'third_party/WebKit/Source',
+  'third_party/WebKit/Source/JavaScriptCore',
+  'third_party/WebKit/Source/JavaScriptCore/wtf',
+  'third_party/WebKit/Source/ThirdParty/glu',
+  'third_party/WebKit/Source/WebCore',
+  'third_party/WebKit/Source/WebCore/accessibility',
+  'third_party/WebKit/Source/WebCore/accessibility/chromium',
+  'third_party/WebKit/Source/WebCore/bindings',
+  'third_party/WebKit/Source/WebCore/bindings/generic',
+  'third_party/WebKit/Source/WebCore/bindings/v8',
+  'third_party/WebKit/Source/WebCore/bindings/v8/custom',
+  'third_party/WebKit/Source/WebCore/bindings/v8/specialization',
+  'third_party/WebKit/Source/WebCore/bridge',
+  'third_party/WebKit/Source/WebCore/bridge/jni',
+  'third_party/WebKit/Source/WebCore/bridge/jni/v8',
+  'third_party/WebKit/Source/WebCore/css',
+  'third_party/WebKit/Source/WebCore/dom',
+  'third_party/WebKit/Source/WebCore/dom/default',
+  'third_party/WebKit/Source/WebCore/editing',
+  'third_party/WebKit/Source/WebCore/fileapi',
+  'third_party/WebKit/Source/WebCore/history',
+  'third_party/WebKit/Source/WebCore/html',
+  'third_party/WebKit/Source/WebCore/html/canvas',
+  'third_party/WebKit/Source/WebCore/html/parser',
+  'third_party/WebKit/Source/WebCore/html/shadow',
+  'third_party/WebKit/Source/WebCore/inspector',
+  'third_party/WebKit/Source/WebCore/loader',
+  'third_party/WebKit/Source/WebCore/loader/appcache',
+  'third_party/WebKit/Source/WebCore/loader/archive',
+  'third_party/WebKit/Source/WebCore/loader/cache',
+  'third_party/WebKit/Source/WebCore/loader/icon',
+  'third_party/WebKit/Source/WebCore/mathml',
+  'third_party/WebKit/Source/WebCore/notifications',
+  'third_party/WebKit/Source/WebCore/page',
+  'third_party/WebKit/Source/WebCore/page/animation',
+  'third_party/WebKit/Source/WebCore/page/chromium',
+  'third_party/WebKit/Source/WebCore/platform',
+  'third_party/WebKit/Source/WebCore/platform/animation',
+  'third_party/WebKit/Source/WebCore/platform/audio',
+  'third_party/WebKit/Source/WebCore/platform/audio/chromium',
+  'third_party/WebKit/Source/WebCore/platform/audio/mac',
+  'third_party/WebKit/Source/WebCore/platform/chromium',
+  'third_party/WebKit/Source/WebCore/platform/cocoa',
+  'third_party/WebKit/Source/WebCore/platform/graphics',
+  'third_party/WebKit/Source/WebCore/platform/graphics/cg',
+  'third_party/WebKit/Source/WebCore/platform/graphics/chromium',
+  'third_party/WebKit/Source/WebCore/platform/graphics/cocoa',
+  'third_party/WebKit/Source/WebCore/platform/graphics/filters',
+  'third_party/WebKit/Source/WebCore/platform/graphics/gpu',
+  'third_party/WebKit/Source/WebCore/platform/graphics/mac',
+  'third_party/WebKit/Source/WebCore/platform/graphics/opentype',
+  'third_party/WebKit/Source/WebCore/platform/graphics/skia',
+  'third_party/WebKit/Source/WebCore/platform/graphics/transforms',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/bmp',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/gif',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/ico',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/jpeg',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/png',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/skia',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/webp',
+  'third_party/WebKit/Source/WebCore/platform/image-decoders/xbm',
+  'third_party/WebKit/Source/WebCore/platform/image-encoders/skia',
+  'third_party/WebKit/Source/WebCore/platform/mac',
+  'third_party/WebKit/Source/WebCore/platform/mock',
+  'third_party/WebKit/Source/WebCore/platform/network',
+  'third_party/WebKit/Source/WebCore/platform/network/chromium',
+  'third_party/WebKit/Source/WebCore/platform/sql',
+  'third_party/WebKit/Source/WebCore/platform/text',
+  'third_party/WebKit/Source/WebCore/platform/text/mac',
+  'third_party/WebKit/Source/WebCore/platform/text/transcoder',
+  'third_party/WebKit/Source/WebCore/plugins',
+  'third_party/WebKit/Source/WebCore/plugins/chromium',
+  'third_party/WebKit/Source/WebCore/rendering',
+  'third_party/WebKit/Source/WebCore/rendering/style',
+  'third_party/WebKit/Source/WebCore/rendering/svg',
+  'third_party/WebKit/Source/WebCore/storage',
+  'third_party/WebKit/Source/WebCore/storage/chromium',
+  'third_party/WebKit/Source/WebCore/svg',
+  'third_party/WebKit/Source/WebCore/svg/animation',
+  'third_party/WebKit/Source/WebCore/svg/graphics',
+  'third_party/WebKit/Source/WebCore/svg/graphics/filters',
+  'third_party/WebKit/Source/WebCore/svg/properties',
+  'third_party/WebKit/Source/WebCore/webaudio',
+  'third_party/WebKit/Source/WebCore/websockets',
+  'third_party/WebKit/Source/WebCore/workers',
+  'third_party/WebKit/Source/WebCore/xml',
+  'third_party/WebKit/Source/WebKit/chromium/public',
+  'third_party/WebKit/Source/WebKit/chromium/src',
+  'third_party/WebKit/Source/WebKit/mac/WebCoreSupport',
+  'third_party/WebKit/WebKitLibraries',
+  'third_party/cld',
+  'third_party/icu/public/common',
+  'third_party/icu/public/i18n',
+  'third_party/npapi',
+  'third_party/npapi/bindings',
+  'third_party/protobuf',
+  'third_party/protobuf/src',
+  'third_party/skia/gpu/include',
+  'third_party/skia/include/config',
+  'third_party/skia/include/core',
+  'third_party/skia/include/effects',
+  'third_party/skia/include/gpu',
+  'third_party/skia/include/pdf',
+  'third_party/skia/include/ports',
+  'v8/include',
+  'xcodebuild/Debug/include',
+  'xcodebuild/DerivedSources/Debug/chrome',
+  'xcodebuild/DerivedSources/Debug/policy',
+  'xcodebuild/DerivedSources/Debug/protoc_out',
+  'xcodebuild/DerivedSources/Debug/webkit',
+  'xcodebuild/DerivedSources/Debug/webkit/bindings',
+]
+
+
+def Walk(seen, filename, parent, indent):
+  """Returns the size of |filename| plus the size of all files included by
+  |filename| and prints the include tree of |filename| to stdout. Every file
+  is visited at most once.
+  """
+  total_bytes = 0
+
+  # .proto(devel) filename translation
+  if filename.endswith('.pb.h'):
+    basename = filename[:-5]
+    if os.path.exists(basename + '.proto'):
+      filename = basename + '.proto'
+    else:
+      print 'could not find ', filename
+
+  # Show and count files only once.
+  if filename in seen:
+    return total_bytes
+  seen.add(filename)
+
+  # Display the paths.
+  print ' ' * indent + filename
+
+  # Skip system includes.
+  if filename[0] == '<':
+    return total_bytes
+
+  # Find file in all include paths.
+  resolved_filename = filename
+  for root in INCLUDE_PATHS + [os.path.dirname(parent)]:
+    if os.path.exists(os.path.join(root, filename)):
+      resolved_filename = os.path.join(root, filename)
+      break
+
+  # Recurse.
+  if os.path.exists(resolved_filename):
+    lines = open(resolved_filename).readlines()
+  else:
+    print ' ' * (indent + 2) + "-- not found"
+    lines = []
+  for line in lines:
+    line = line.strip()
+    if line.startswith('#include "'):
+      total_bytes += Walk(
+          seen, line.split('"')[1], resolved_filename, indent + 2)
+    elif line.startswith('#include '):
+      include = '<' + line.split('<')[1].split('>')[0] + '>'
+      total_bytes += Walk(
+          seen, include, resolved_filename, indent + 2)
+    elif line.startswith('import '):
+      total_bytes += Walk(
+          seen, line.split('"')[1], resolved_filename, indent + 2)
+  return total_bytes + len("".join(lines))
+
+
+bytes = Walk(set(), sys.argv[1], '', 0)
+print
+print float(bytes) / (1 << 20), "megabytes of chrome source"