tools/pcre/pcre_ord2utf8.c
author Nicholas Hastings <skamonkey@gmail.com>
Sun Mar 17 11:32:03 2013 -0400 (2013-03-17)
changeset 3831 babd0eee3c5e
parent 2762 d2d467bf1b5a
permissions -rw-r--r--
Updated PCRE source to version 8.32 (bug 5593).
     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 */