text: /*
   * Copyright 2012, The Android Open Source Project
   *
   * 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.
   */
  
  #ifndef BCC_SUPPORT_SHA1_UTIL_H
  #define BCC_SUPPORT_SHA1_UTIL_H
  
  #include <stdint.h>
  
  #include <cstddef>
  
  // This guard prevents system sha1.h (such as the one in bionic) has been
  // included before this header.
  #ifndef SHA1_DIGEST_LENGTH
  #define SHA1_DIGEST_LENGTH 20
  #endif
  
  namespace bcc {
  
  class Sha1Util {
  private:
    Sha1Util(); // DISABLED.
    Sha1Util(Sha1Util &); // DISABLED.
  
  public:
    // Return true on success.
    static bool GetSHA1DigestFromFile(uint8_t pResult[SHA1_DIGEST_LENGTH],
                                      const char *pFilename);
  
    // Return true on success.
    static bool GetSHA1DigestFromBuffer(uint8_t pResult[SHA1_DIGEST_LENGTH],
                                        const uint8_t *pData, size_t pSize);
  
    // Useful function when passing buffer of type  "const char *."
    static bool GetSHA1DigestFromBuffer(uint8_t pResult[SHA1_DIGEST_LENGTH],
                                        const char *pData, size_t pSize) {
      return GetSHA1DigestFromBuffer(pResult,
                                     reinterpret_cast<const uint8_t*>(pData),
                                     pSize);
    }
  };
  
  } // end namespace bcc
  
  #endif // BCC_SUPPORT_SHA1_UTIL_H
  