/[pcre]/code/tags/pcre-6.4/pcre_ord2utf8.c
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Contents of /code/tags/pcre-6.4/pcre_ord2utf8.c

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Revision 86 - (hide annotations) (download)
Sat Feb 24 21:41:15 2007 UTC (7 years, 4 months ago) by nigel
File MIME type: text/plain
File size: 2985 byte(s)
Tag code/trunk as code/tags/pcre-6.4.

1 nigel 77 /*************************************************
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) 1997-2005 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    
45     #include "pcre_internal.h"
46    
47    
48     /*************************************************
49     * Convert character value to UTF-8 *
50     *************************************************/
51    
52     /* This function takes an integer value in the range 0 - 0x7fffffff
53     and encodes it as a UTF-8 character in 0 to 6 bytes.
54    
55     Arguments:
56     cvalue the character value
57     buffer pointer to buffer for result - at least 6 bytes long
58    
59     Returns: number of characters placed in the buffer
60     */
61    
62 nigel 85 PCRE_EXPORT int
63 nigel 77 _pcre_ord2utf8(int cvalue, uschar *buffer)
64     {
65     register int i, j;
66     for (i = 0; i < _pcre_utf8_table1_size; i++)
67     if (cvalue <= _pcre_utf8_table1[i]) break;
68     buffer += i;
69     for (j = i; j > 0; j--)
70     {
71     *buffer-- = 0x80 | (cvalue & 0x3f);
72     cvalue >>= 6;
73     }
74     *buffer = _pcre_utf8_table2[i] | cvalue;
75     return i + 1;
76     }
77    
78     /* End of pcre_ord2utf8.c */

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