old_contents: # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  # implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  INCLUDES = """
  #include <CommonCrypto/CommonHMAC.h>
  """
  
  TYPES = """
  typedef struct {
      ...;
  } CCHmacContext;
  enum CCHmacAlgorithm {
      kCCHmacAlgSHA1,
      kCCHmacAlgMD5,
      kCCHmacAlgSHA256,
      kCCHmacAlgSHA384,
      kCCHmacAlgSHA512,
      kCCHmacAlgSHA224
  };
  typedef uint32_t CCHmacAlgorithm;
  """
  
  FUNCTIONS = """
  void CCHmacInit(CCHmacContext *, CCHmacAlgorithm, const void *, size_t);
  void CCHmacUpdate( CCHmacContext *, const void *, size_t);
  void CCHmacFinal( CCHmacContext *, void *);
  
  """
  
  MACROS = """
  """
  
  CUSTOMIZATIONS = """
  """
  
  CONDITIONAL_NAMES = {}
  
new_contents: # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  # implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  INCLUDES = """
  #include <CommonCrypto/CommonHMAC.h>
  """
  
  TYPES = """
  typedef struct {
      ...;
  } CCHmacContext;
  enum CCHmacAlgorithm {
      kCCHmacAlgSHA1,
      kCCHmacAlgMD5,
      kCCHmacAlgSHA256,
      kCCHmacAlgSHA384,
      kCCHmacAlgSHA512,
      kCCHmacAlgSHA224
  };
  typedef uint32_t CCHmacAlgorithm;
  """
  
  FUNCTIONS = """
  void CCHmacInit(CCHmacContext *, CCHmacAlgorithm, const void *, size_t);
  void CCHmacUpdate(CCHmacContext *, const void *, size_t);
  void CCHmacFinal(CCHmacContext *, void *);
  
  """
  
  MACROS = """
  """
  
  CUSTOMIZATIONS = """
  """
  
  CONDITIONAL_NAMES = {}
  
subject: remove extraneous spaces