Annotation of embedaddon/php/ext/pcre/pcrelib/pcre_ord2utf8.c, revision 1.1.1.2
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
1.1.1.2 ! misho 9: Copyright (c) 1997-2012 University of Cambridge
1.1 misho 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:
1.1.1.2 ! misho 44: #ifdef HAVE_CONFIG_H
1.1 misho 45: #include "config.h"
1.1.1.2 ! misho 46: #endif
1.1 misho 47:
1.1.1.2 ! misho 48: #define COMPILE_PCRE8
1.1 misho 49:
1.1.1.2 ! misho 50: #include "pcre_internal.h"
1.1 misho 51:
52: /*************************************************
53: * Convert character value to UTF-8 *
54: *************************************************/
55:
1.1.1.2 ! misho 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.
1.1 misho 58:
59: Arguments:
60: cvalue the character value
1.1.1.2 ! misho 61: buffer pointer to buffer for result - at least 6 pcre_uchars long
1.1 misho 62:
63: Returns: number of characters placed in the buffer
64: */
65:
1.1.1.2 ! misho 66: unsigned
1.1 misho 67: int
1.1.1.2 ! misho 68: PRIV(ord2utf)(pcre_uint32 cvalue, pcre_uchar *buffer)
1.1 misho 69: {
1.1.1.2 ! misho 70: #ifdef SUPPORT_UTF
! 71:
1.1 misho 72: register int i, j;
1.1.1.2 ! misho 73:
! 74: for (i = 0; i < PRIV(utf8_table1_size); i++)
! 75: if ((int)cvalue <= PRIV(utf8_table1)[i]) break;
1.1 misho 76: buffer += i;
77: for (j = i; j > 0; j--)
78: {
79: *buffer-- = 0x80 | (cvalue & 0x3f);
80: cvalue >>= 6;
81: }
1.1.1.2 ! misho 82: *buffer = PRIV(utf8_table2)[i] | cvalue;
1.1 misho 83: return i + 1;
1.1.1.2 ! misho 84:
1.1 misho 85: #else
1.1.1.2 ! misho 86:
1.1 misho 87: (void)(cvalue); /* Keep compiler happy; this function won't ever be */
1.1.1.2 ! misho 88: (void)(buffer); /* called when SUPPORT_UTF is not defined. */
1.1 misho 89: return 0;
1.1.1.2 ! misho 90:
1.1 misho 91: #endif
92: }
93:
94: /* End of pcre_ord2utf8.c */
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