Issue 6273 - Apply eyeo python code style

third_party/libadblockplus/prepare_dependencies.py

+from __future__ import print_function
+
 import sys
 import os
 import shutil
 
+
 def duplicate(src, dst, symlink=False):
-  if (os.path.exists(dst)):
-    if (os.path.isdir(dst)):
-      print('Deleting %s' % dst)
-      shutil.rmtree(dst);
+    if os.path.exists(dst):
+        if os.path.isdir(dst):
+            print('Deleting {}'.format(dst))
+            shutil.rmtree(dst)
+        else:
+            # symlink
+            os.unlink(dst)
+
+    dst_parent = os.path.abspath(os.path.join(dst, os.pardir))
+    if not os.path.exists(dst_parent):
+        print('Creating parent directory {} for {}'.format(dst_parent, dst))
+        os.makedirs(dst_parent)
+
+    if symlink:
+        print('Symlinking {} to {}'.format(src, dst))
+        os.symlink(src, dst)
     else:
-      # symlink
-      os.unlink(dst)
-      
-  dst_parent = os.path.abspath(os.path.join(dst, os.pardir))
-  if not os.path.exists(dst_parent):
-    print('Creating parent directory %s for %s' % (dst_parent, dst))
-    os.makedirs(dst_parent)
+        print('Copying {} to {}'.format(src, dst))
+        shutil.copytree(src, dst)
 
-  if symlink:
-    print('Symlinking %s to %s' % (src, dst))
-    os.symlink(src, dst)
-  else:
-    print('Copying %s to %s' % (src, dst))
-    shutil.copytree(src, dst)
 
 def prepare_deps():
-  cwd = os.getcwd()
-  libadblockplus_root = os.path.join(cwd, 'src', 'third_party', 'libadblockplus', 'third_party')
-  
-  # googletest
-  # Chromium's googletest has a bit different directories structure ('src' as subdirectory)
-  #googletest_src = os.path.join(cwd, 'src', 'third_party', 'googletest')
-  #googletest_dst = os.path.join(libadblockplus_root, 'googletest')
-  #duplicate(googletest_src, googletest_dst)
+    cwd = os.getcwd()
+    libadblockplus_third_party = os.path.join(cwd,
+                                              'src', 'third_party',
+                                              'libadblockplus', 'third_party')
 
-  # gyp
-  # Chromium's gyp can't be used because of compile error:
-  # *** No rule to make target `shell/src/Main.cpp', needed by `local/armeabi-v7a/objs/abpshell/shell/src/Main.o'.  Stop.
-  # See. https://hg.adblockplus.org/gyp/rev/fix-issue-339
-  #gyp_src = os.path.join(cwd, 'src', 'tools', 'gyp')
-  #gyp_dst = os.path.join(libadblockplus_root, 'gyp')
-  #duplicate(gyp_src, gyp_dst)
+    # googletest
+    #
+    # Chromium's googletest has a bit different directories structure
+    # ('src' as subdirectory)
 
-  # back-up /v8/testing/gtest as it will be deleted while preparing v8
-  gtest_bak_src = os.path.join(libadblockplus_root, 'v8', 'testing', 'gtest')
-  gtest_bak_dst = os.path.join(libadblockplus_root, 'gtest.bak')
-  shutil.move(gtest_bak_src, gtest_bak_dst)
+    # gyp
+    #
+    # Chromium's gyp can't be used because of compile error:
+    # *** No rule to make target `shell/src/Main.cpp',
+    # needed by `local/armeabi-v7a/objs/abpshell/shell/src/Main.o'.  Stop.
+    # See. https://hg.adblockplus.org/gyp/rev/fix-issue-339
 
-  # v8
-  v8_src = os.path.join(cwd, 'src', 'v8')
-  v8_dst = os.path.join(libadblockplus_root, 'v8')
-  duplicate(v8_src, v8_dst)
+    # back-up /v8/testing/gtest as it will be deleted while preparing v8
+    gtest_bak_src = os.path.join(libadblockplus_third_party,
+                                 'v8', 'testing', 'gtest')
+    gtest_bak_dst = os.path.join(libadblockplus_third_party, 'gtest.bak')
+    shutil.move(gtest_bak_src, gtest_bak_dst)
 
-  # restore /v8/testing/gtest from backup
-  shutil.move(gtest_bak_dst, gtest_bak_src)
+    # v8
+    v8_src = os.path.join(cwd, 'src', 'v8')
+    v8_dst = os.path.join(libadblockplus_third_party, 'v8')
+    duplicate(v8_src, v8_dst)
 
-  # v8/base/trace_event/common
-  trace_common_src = os.path.join(cwd, 'src', 'base', 'trace_event', 'common')
-  trace_common_dst = os.path.join(libadblockplus_root, 'v8', 'base', 'trace_event', 'common')
-  duplicate(trace_common_src, trace_common_dst)
+    # restore /v8/testing/gtest from backup
+    shutil.move(gtest_bak_dst, gtest_bak_src)
 
-  # v8/build
-  build_src = os.path.join(cwd, 'src', 'build')
-  build_dst = os.path.join(libadblockplus_root, 'v8', 'build')
-  duplicate(build_src, build_dst)
+    # v8/testing/gtest
+    #
+    # Chromium's gtest can't be used becuase of compile error:
+    # fatal error: third_party/googletest/src/googletest/include/gtest/gtest_prod.h: No such file or directory
+    # #include "third_party/googletest/src/googletest/include/gtest/gtest_prod.h"
+    # so we have to back-up gtest above and restore it
+    # after prepring of 'v8' directory
 
-  # v8/testing/gtest
-  # Chromium's gtest can't be used becuase of compile error:
-  # fatal error: third_party/googletest/src/googletest/include/gtest/gtest_prod.h: No such file or directory
-  # #include "third_party/googletest/src/googletest/include/gtest/gtest_prod.h"
-  # so we have to back-up gtest above and restore it after prepring of 'v8' directory
-  #gtest_src = os.path.join(cwd, 'src', 'testing', 'gtest')
-  #gtest_dst = os.path.join(libadblockplus_root, 'v8', 'testing', 'gtest')
-  #duplicate(gtest_src, gtest_dst)
+    for path in [
+        ('base', 'trace_event', 'common'),
+        ('build',),
+        ('tools', 'gyp'),
+        ('tools', 'clang'),
+        ('third_party', 'icu'),
+        ('third_party' , 'jinja2'),
+        ('third_party', 'markupsafe')  
+    ]:
+        src = os.path.join(cwd, 'src', *path)
+        dst = os.path.join(libadblockplus_third_party, 'v8', *path)
+        duplicate(src, dst)
 
-  # v8/tools/gyp
-  tools_gyp_src = os.path.join(cwd, 'src', 'tools', 'gyp')
-  tools_gyp_dst = os.path.join(libadblockplus_root, 'v8', 'tools', 'gyp')
-  duplicate(tools_gyp_src, tools_gyp_dst)
 
-  # v8/tools/clang
-  clang_src = os.path.join(cwd, 'src', 'tools', 'clang')
-  clang_dst = os.path.join(libadblockplus_root, 'v8', 'tools', 'clang')
-  duplicate(clang_src, clang_dst)
-
-  # v8/third_party/icu
-  icu_src = os.path.join(cwd, 'src', 'third_party', 'icu')
-  icu_dst = os.path.join(libadblockplus_root, 'v8', 'third_party', 'icu')
-  duplicate(icu_src, icu_dst)
-
-  # v8/third_party/jinja2
-  jinja2_src = os.path.join(cwd, 'src', 'third_party', 'jinja2')
-  jinja2_dst = os.path.join(libadblockplus_root, 'v8', 'third_party', 'jinja2')
-  duplicate(jinja2_src, jinja2_dst)
-
-  # v8/third_party/markupsafe
-  markupsafe_src = os.path.join(cwd, 'src', 'third_party', 'markupsafe')
-  markupsafe_dst = os.path.join(libadblockplus_root, 'v8', 'third_party', 'markupsafe')
-  duplicate(markupsafe_src, markupsafe_dst)
-
-  return 0  
-
-def main(argv):
-  return prepare_deps();
-
-if '__main__' == __name__:
-  try:
-    sys.exit(main(sys.argv[1:]))
-  except KeyboardInterrupt:
-    sys.stderr.write('interrupted\n')
-    sys.exit(1)
+if __name__ == '__main__':
+    try:
+        prepare_deps()
+    except KeyboardInterrupt:
+        sys.exit('interrupted')