1  /* stringlib: count implementation */
       2  
       3  #ifndef STRINGLIB_FASTSEARCH_H
       4  #error must include "stringlib/fastsearch.h" before including this module
       5  #endif
       6  
       7  // gh-97982: Implementing asciilib_count() is not worth it, FASTSEARCH() does
       8  // not specialize the code for ASCII strings. Use ucs1lib_count() for ASCII and
       9  // UCS1 strings: it's the same than asciilib_count().
      10  #if !STRINGLIB_IS_UNICODE || STRINGLIB_MAX_CHAR > 0x7Fu
      11  
      12  Py_LOCAL_INLINE(Py_ssize_t)
      13  STRINGLIB(count)(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
      14                  const STRINGLIB_CHAR* sub, Py_ssize_t sub_len,
      15                  Py_ssize_t maxcount)
      16  {
      17      Py_ssize_t count;
      18  
      19      if (str_len < 0)
      20          return 0; /* start > len(str) */
      21      if (sub_len == 0)
      22          return (str_len < maxcount) ? str_len + 1 : maxcount;
      23  
      24      count = FASTSEARCH(str, str_len, sub, sub_len, maxcount, FAST_COUNT);
      25  
      26      if (count < 0)
      27          return 0; /* no match */
      28  
      29      return count;
      30  }
      31  
      32  #endif