Annotation of embedaddon/pcre/pcre_ord2utf8.c, revision 1.1
1.1 ! misho 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) 1997-2008 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: #include "pcre_internal.h"
! 49:
! 50:
! 51: /*************************************************
! 52: * Convert character value to UTF-8 *
! 53: *************************************************/
! 54:
! 55: /* This function takes an integer value in the range 0 - 0x7fffffff
! 56: and encodes it as a UTF-8 character in 0 to 6 bytes.
! 57:
! 58: Arguments:
! 59: cvalue the character value
! 60: buffer pointer to buffer for result - at least 6 bytes long
! 61:
! 62: Returns: number of characters placed in the buffer
! 63: */
! 64:
! 65: int
! 66: _pcre_ord2utf8(int cvalue, uschar *buffer)
! 67: {
! 68: #ifdef SUPPORT_UTF8
! 69: register int i, j;
! 70: for (i = 0; i < _pcre_utf8_table1_size; i++)
! 71: if (cvalue <= _pcre_utf8_table1[i]) break;
! 72: buffer += i;
! 73: for (j = i; j > 0; j--)
! 74: {
! 75: *buffer-- = 0x80 | (cvalue & 0x3f);
! 76: cvalue >>= 6;
! 77: }
! 78: *buffer = _pcre_utf8_table2[i] | cvalue;
! 79: return i + 1;
! 80: #else
! 81: (void)(cvalue); /* Keep compiler happy; this function won't ever be */
! 82: (void)(buffer); /* called when SUPPORT_UTF8 is not defined. */
! 83: return 0;
! 84: #endif
! 85: }
! 86:
! 87: /* End of pcre_ord2utf8.c */
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