Apply yapf formatting to all Python files (issue #2171)

tools/file_util.py

@@ -8,134 +8,152 @@ import shutil
 import sys
 import time
 
-def read_file(name, normalize = True):
-    """ Read a file. """
-    try:
-        f = open(name, 'r')
-        # read the data
-        data = f.read()
-        if normalize:
-            # normalize line endings
-            data = data.replace("\r\n", "\n")
-        return data
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to read file '+name+': '+strerror)
-        raise
-    else:
-        f.close()
- 
+
+def read_file(name, normalize=True):
+  """ Read a file. """
+  try:
+    f = open(name, 'r')
+    # read the data
+    data = f.read()
+    if normalize:
+      # normalize line endings
+      data = data.replace("\r\n", "\n")
+    return data
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to read file ' + name + ': ' + strerror)
+    raise
+  else:
+    f.close()
+
+
 def write_file(name, data):
-    """ Write a file. """
-    try:
-        f = open(name, 'w')
-        # write the data
-        f.write(data)
-    except IOError, (errno, strerror):
-       sys.stderr.write('Failed to write file '+name+': '+strerror)
-       raise
-    else:
-        f.close()
-        
+  """ Write a file. """
+  try:
+    f = open(name, 'w')
+    # write the data
+    f.write(data)
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to write file ' + name + ': ' + strerror)
+    raise
+  else:
+    f.close()
+
+
 def path_exists(name):
-    """ Returns true if the path currently exists. """
-    return os.path.exists(name)
+  """ Returns true if the path currently exists. """
+  return os.path.exists(name)
+
 
 def backup_file(name):
-    """ Rename the file to a name that includes the current time stamp. """
-    move_file(name, name+'.'+time.strftime('%Y-%m-%d-%H-%M-%S'))
+  """ Rename the file to a name that includes the current time stamp. """
+  move_file(name, name + '.' + time.strftime('%Y-%m-%d-%H-%M-%S'))
 
-def copy_file(src, dst, quiet = True):
-    """ Copy a file. """
-    try:
-        shutil.copy(src, dst)
-        if not quiet:
-            sys.stdout.write('Transferring '+src+' file.\n')
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to copy file from '+src+' to '+dst+': '+strerror)
-        raise
 
-def move_file(src, dst, quiet = True):
-    """ Move a file. """
-    try:
-        shutil.move(src, dst)
-        if not quiet:
-            sys.stdout.write('Moving '+src+' file.\n')
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to move file from '+src+' to '+dst+': '+strerror)
-        raise
+def copy_file(src, dst, quiet=True):
+  """ Copy a file. """
+  try:
+    shutil.copy(src, dst)
+    if not quiet:
+      sys.stdout.write('Transferring ' + src + ' file.\n')
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to copy file from ' + src + ' to ' + dst + ': ' +
+                     strerror)
+    raise
 
-def copy_files(src_glob, dst_folder, quiet = True):
-    """ Copy multiple files. """
-    for fname in iglob(src_glob):
-        dst = os.path.join(dst_folder, os.path.basename(fname))
-        if os.path.isdir(fname):
-            copy_dir(fname, dst, quiet)
-        else:
-            copy_file(fname, dst, quiet)
 
-def remove_file(name, quiet = True):
-    """ Remove the specified file. """
-    try:
-        if path_exists(name):
-            os.remove(name)
-            if not quiet:
-                sys.stdout.write('Removing '+name+' file.\n')
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to remove file '+name+': '+strerror)
-        raise
+def move_file(src, dst, quiet=True):
+  """ Move a file. """
+  try:
+    shutil.move(src, dst)
+    if not quiet:
+      sys.stdout.write('Moving ' + src + ' file.\n')
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to move file from ' + src + ' to ' + dst + ': ' +
+                     strerror)
+    raise
 
-def copy_dir(src, dst, quiet = True):
-    """ Copy a directory tree. """
-    try:
-        remove_dir(dst, quiet)
-        shutil.copytree(src, dst)
-        if not quiet:
-            sys.stdout.write('Transferring '+src+' directory.\n')
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to copy directory from '+src+' to '+dst+': '+strerror)
-        raise
 
-def remove_dir(name, quiet = True):
-    """ Remove the specified directory. """
-    try:
-        if path_exists(name):
-            shutil.rmtree(name)
-            if not quiet:
-                sys.stdout.write('Removing '+name+' directory.\n')
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to remove directory '+name+': '+strerror)
-        raise
+def copy_files(src_glob, dst_folder, quiet=True):
+  """ Copy multiple files. """
+  for fname in iglob(src_glob):
+    dst = os.path.join(dst_folder, os.path.basename(fname))
+    if os.path.isdir(fname):
+      copy_dir(fname, dst, quiet)
+    else:
+      copy_file(fname, dst, quiet)
+
+
+def remove_file(name, quiet=True):
+  """ Remove the specified file. """
+  try:
+    if path_exists(name):
+      os.remove(name)
+      if not quiet:
+        sys.stdout.write('Removing ' + name + ' file.\n')
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to remove file ' + name + ': ' + strerror)
+    raise
+
+
+def copy_dir(src, dst, quiet=True):
+  """ Copy a directory tree. """
+  try:
+    remove_dir(dst, quiet)
+    shutil.copytree(src, dst)
+    if not quiet:
+      sys.stdout.write('Transferring ' + src + ' directory.\n')
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to copy directory from ' + src + ' to ' + dst +
+                     ': ' + strerror)
+    raise
+
+
+def remove_dir(name, quiet=True):
+  """ Remove the specified directory. """
+  try:
+    if path_exists(name):
+      shutil.rmtree(name)
+      if not quiet:
+        sys.stdout.write('Removing ' + name + ' directory.\n')
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to remove directory ' + name + ': ' + strerror)
+    raise
+
+
+def make_dir(name, quiet=True):
+  """ Create the specified directory. """
+  try:
+    if not path_exists(name):
+      if not quiet:
+        sys.stdout.write('Creating ' + name + ' directory.\n')
+      os.makedirs(name)
+  except IOError, (errno, strerror):
+    sys.stderr.write('Failed to create directory ' + name + ': ' + strerror)
+    raise
 
-def make_dir(name, quiet = True):
-    """ Create the specified directory. """
-    try:
-        if not path_exists(name):
-            if not quiet:
-                sys.stdout.write('Creating '+name+' directory.\n')
-            os.makedirs(name)
-    except IOError, (errno, strerror):
-        sys.stderr.write('Failed to create directory '+name+': '+strerror)
-        raise
 
 def get_files(search_glob):
-    """ Returns all files matching the search glob. """
-    # Sort the result for consistency across platforms.
-    return sorted(iglob(search_glob))
+  """ Returns all files matching the search glob. """
+  # Sort the result for consistency across platforms.
+  return sorted(iglob(search_glob))
+
 
 def read_version_file(file, args):
-    """ Read and parse a version file (key=value pairs, one per line). """
-    lines = read_file(file).split("\n")
-    for line in lines:
-        parts = line.split('=', 1)
-        if len(parts) == 2:
-            args[parts[0]] = parts[1]
+  """ Read and parse a version file (key=value pairs, one per line). """
+  lines = read_file(file).split("\n")
+  for line in lines:
+    parts = line.split('=', 1)
+    if len(parts) == 2:
+      args[parts[0]] = parts[1]
+
 
 def eval_file(src):
-    """ Loads and evaluates the contents of the specified file. """
-    return eval(read_file(src), {'__builtins__': None}, None)
+  """ Loads and evaluates the contents of the specified file. """
+  return eval(read_file(src), {'__builtins__': None}, None)
+
 
 def normalize_path(path):
-    """ Normalizes the path separator to match the Unix standard. """
-    if sys.platform == 'win32':
-        return path.replace('\\', '/')
-    return path
+  """ Normalizes the path separator to match the Unix standard. """
+  if sys.platform == 'win32':
+    return path.replace('\\', '/')
+  return path