/*************************************************

*      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

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-----------------------------------------------------------------------------

*/

/* This file contains a private PCRE function that converts an ordinal

character value into a UTF8 string. */

#include "config.h"

#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 6 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

*/

int

PRIV(ord2utf)(pcre_uint32 cvalue, pcre_uchar *buffer)

{

#ifdef SUPPORT_UTF

int i, j;

/* Checking invalid cvalue character, encoded as invalid UTF-16 character.

Should never happen in practice. */

if ((cvalue & 0xf800) == 0xd800 || cvalue >= 0x110000)

  cvalue = 0xfffe;

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 */