thodg/libgit2/deps/pcre/pcre_ord2utf8.c

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• Hash : 9ceafb57
  Author :
  Date : 2019-01-12T22:55:31
  

  regexec: use pcre as our fallback/builtin regex Use PCRE 8.42 as the builtin regex implementation, using its POSIX compatibility layer. PCRE uses ASCII by default and the users locale will not influence its behavior, so its `regcomp` implementation is similar to `regcomp_l` with a C locale.

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• deps/pcre/pcre_ord2utf8.c

• /*************************************************
  *      Perl-Compatible Regular Expressions       *
  *************************************************/
  
  /* PCRE is a library of functions to support regular expressions whose syntax
  and semantics are as close as possible to those of the Perl 5 language.
  
                         Written by Philip Hazel
             Copyright (c) 1997-2012 University of Cambridge
  
  -----------------------------------------------------------------------------
  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions are met:
  
      * Redistributions of source code must retain the above copyright notice,
        this list of conditions and the following disclaimer.
  
      * Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
  
      * Neither the name of the University of Cambridge nor the names of its
        contributors may be used to endorse or promote products derived from
        this software without specific prior written permission.
  
  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  POSSIBILITY OF SUCH DAMAGE.
  -----------------------------------------------------------------------------
  */
  
  
  /* This file contains a private PCRE function that converts an ordinal
  character value into a UTF8 string. */
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  
  #define COMPILE_PCRE8
  
  #include "pcre_internal.h"
  
  /*************************************************
  *       Convert character value to UTF-8         *
  *************************************************/
  
  /* This function takes an integer value in the range 0 - 0x10ffff
  and encodes it as a UTF-8 character in 1 to 4 pcre_uchars.
  
  Arguments:
    cvalue     the character value
    buffer     pointer to buffer for result - at least 6 pcre_uchars long
  
  Returns:     number of characters placed in the buffer
  */
  
  unsigned
  int
  PRIV(ord2utf)(pcre_uint32 cvalue, pcre_uchar *buffer)
  {
  #ifdef SUPPORT_UTF
  
  register int i, j;
  
  for (i = 0; i < PRIV(utf8_table1_size); i++)
    if ((int)cvalue <= PRIV(utf8_table1)[i]) break;
  buffer += i;
  for (j = i; j > 0; j--)
   {
   *buffer-- = 0x80 | (cvalue & 0x3f);
   cvalue >>= 6;
   }
  *buffer = PRIV(utf8_table2)[i] | cvalue;
  return i + 1;
  
  #else
  
  (void)(cvalue);  /* Keep compiler happy; this function won't ever be */
  (void)(buffer);  /* called when SUPPORT_UTF is not defined. */
  return 0;
  
  #endif
  }
  
  /* End of pcre_ord2utf8.c */
  

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