1  #ifndef Py_INTERNAL_BYTESOBJECT_H
       2  #define Py_INTERNAL_BYTESOBJECT_H
       3  #ifdef __cplusplus
       4  extern "C" {
       5  #endif
       6  
       7  #ifndef Py_BUILD_CORE
       8  #  error "this header requires Py_BUILD_CORE define"
       9  #endif
      10  
      11  
      12  /* Substring Search.
      13  
      14     Returns the index of the first occurrence of
      15     a substring ("needle") in a larger text ("haystack").
      16     If the needle is not found, return -1.
      17     If the needle is found, add offset to the index.
      18  */
      19  
      20  PyAPI_FUNC(Py_ssize_t)
      21  _PyBytes_Find(const char *haystack, Py_ssize_t len_haystack,
      22                const char *needle, Py_ssize_t len_needle,
      23                Py_ssize_t offset);
      24  
      25  /* Same as above, but search right-to-left */
      26  PyAPI_FUNC(Py_ssize_t)
      27  _PyBytes_ReverseFind(const char *haystack, Py_ssize_t len_haystack,
      28                       const char *needle, Py_ssize_t len_needle,
      29                       Py_ssize_t offset);
      30  
      31  
      32  /** Helper function to implement the repeat and inplace repeat methods on a buffer
      33   *
      34   * len_dest is assumed to be an integer multiple of len_src.
      35   * If src equals dest, then assume the operation is inplace.
      36   *
      37   * This method repeately doubles the number of bytes copied to reduce
      38   * the number of invocations of memcpy.
      39   */
      40  PyAPI_FUNC(void)
      41  _PyBytes_Repeat(char* dest, Py_ssize_t len_dest,
      42      const char* src, Py_ssize_t len_src);
      43  
      44  #ifdef __cplusplus
      45  }
      46  #endif
      47  #endif /* !Py_INTERNAL_BYTESOBJECT_H */