"Fossies" - the Fresh Open Source Software Archive

Member "tin-2.6.2/pcre/pcre_ord2utf8.c" (23 Aug 2021, 2973 Bytes) of package /linux/misc/tin-2.6.2.tar.xz:

    1 /*************************************************
    2 *      Perl-Compatible Regular Expressions       *
    3 *************************************************/
    4 
    5 /* PCRE is a library of functions to support regular expressions whose syntax
    6 and semantics are as close as possible to those of the Perl 5 language.
    7 
    8                        Written by Philip Hazel
    9            Copyright (c) 1997-2006 University of Cambridge
   10 
   11 -----------------------------------------------------------------------------
   12 Redistribution and use in source and binary forms, with or without
   13 modification, are permitted provided that the following conditions are met:
   14 
   15     * Redistributions of source code must retain the above copyright notice,
   16       this list of conditions and the following disclaimer.
   17 
   18     * Redistributions in binary form must reproduce the above copyright
   19       notice, this list of conditions and the following disclaimer in the
   20       documentation and/or other materials provided with the distribution.
   21 
   22     * Neither the name of the University of Cambridge nor the names of its
   23       contributors may be used to endorse or promote products derived from
   24       this software without specific prior written permission.
   25 
   26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   27 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   28 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   29 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
   30 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36 POSSIBILITY OF SUCH DAMAGE.
   37 -----------------------------------------------------------------------------
   38 */
   39 
   40 
   41 /* This file contains a private PCRE function that converts an ordinal
   42 character value into a UTF8 string. */
   43 
   44 
   45 #include "pcre_internal.h"
   46 
   47 
   48 /*************************************************
   49 *       Convert character value to UTF-8         *
   50 *************************************************/
   51 
   52 /* This function takes an integer value in the range 0 - 0x7fffffff
   53 and encodes it as a UTF-8 character in 0 to 6 bytes.
   54 
   55 Arguments:
   56   cvalue     the character value
   57   buffer     pointer to buffer for result - at least 6 bytes long
   58 
   59 Returns:     number of characters placed in the buffer
   60 */
   61 
   62 int
   63 _pcre_ord2utf8(int cvalue, uschar *buffer)
   64 {
   65 register int i, j;
   66 for (i = 0; i < _pcre_utf8_table1_size; i++)
   67   if (cvalue <= _pcre_utf8_table1[i]) break;
   68 buffer += i;
   69 for (j = i; j > 0; j--)
   70  {
   71  *buffer-- = 0x80 | (cvalue & 0x3f);
   72  cvalue >>= 6;
   73  }
   74 *buffer = _pcre_utf8_table2[i] | cvalue;
   75 return i + 1;
   76 }
   77 
   78 /* End of pcre_ord2utf8.c */