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8.33

    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) 1997-2012 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: #ifdef HAVE_CONFIG_H
   45: #include "config.h"
   46: #endif
   47: 
   48: #define COMPILE_PCRE8
   49: 
   50: #include "pcre_internal.h"
   51: 
   52: /*************************************************
   53: *       Convert character value to UTF-8         *
   54: *************************************************/
   55: 
   56: /* This function takes an integer value in the range 0 - 0x10ffff
   57: and encodes it as a UTF-8 character in 1 to 4 pcre_uchars.
   58: 
   59: Arguments:
   60:   cvalue     the character value
   61:   buffer     pointer to buffer for result - at least 6 pcre_uchars long
   62: 
   63: Returns:     number of characters placed in the buffer
   64: */
   65: 
   66: unsigned
   67: int
   68: PRIV(ord2utf)(pcre_uint32 cvalue, pcre_uchar *buffer)
   69: {
   70: #ifdef SUPPORT_UTF
   71: 
   72: register int i, j;
   73: 
   74: for (i = 0; i < PRIV(utf8_table1_size); i++)
   75:   if ((int)cvalue <= PRIV(utf8_table1)[i]) break;
   76: buffer += i;
   77: for (j = i; j > 0; j--)
   78:  {
   79:  *buffer-- = 0x80 | (cvalue & 0x3f);
   80:  cvalue >>= 6;
   81:  }
   82: *buffer = PRIV(utf8_table2)[i] | cvalue;
   83: return i + 1;
   84: 
   85: #else
   86: 
   87: (void)(cvalue);  /* Keep compiler happy; this function won't ever be */
   88: (void)(buffer);  /* called when SUPPORT_UTF is not defined. */
   89: return 0;
   90: 
   91: #endif
   92: }
   93: 
   94: /* End of pcre_ord2utf8.c */