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88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
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/*************************************************
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* Perl-Compatible Regular Expressions *
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*************************************************/
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/* PCRE is a library of functions to support regular expressions whose syntax
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and semantics are as close as possible to those of the Perl 5 language.
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Written by Philip Hazel
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Copyright (c) 1997-2008 University of Cambridge
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-----------------------------------------------------------------------------
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the University of Cambridge nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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-----------------------------------------------------------------------------
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*/
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/* This file contains a private PCRE function that converts an ordinal
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character value into a UTF8 string. */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "pcre_internal.h"
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/*************************************************
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* Convert character value to UTF-8 *
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*************************************************/
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/* This function takes an integer value in the range 0 - 0x7fffffff
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and encodes it as a UTF-8 character in 0 to 6 bytes.
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Arguments:
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cvalue the character value
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buffer pointer to buffer for result - at least 6 bytes long
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Returns: number of characters placed in the buffer
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*/
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int
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_pcre_ord2utf8(int cvalue, uschar *buffer)
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{
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#ifdef SUPPORT_UTF8
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register int i, j;
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for (i = 0; i < _pcre_utf8_table1_size; i++)
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if (cvalue <= _pcre_utf8_table1[i]) break;
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buffer += i;
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for (j = i; j > 0; j--)
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{
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*buffer-- = 0x80 | (cvalue & 0x3f);
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cvalue >>= 6;
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}
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*buffer = _pcre_utf8_table2[i] | cvalue;
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return i + 1;
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#else
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(void)(cvalue); /* Keep compiler happy; this function won't ever be */
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(void)(buffer); /* called when SUPPORT_UTF8 is not defined. */
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return 0;
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#endif
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}
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/* End of pcre_ord2utf8.c */
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