/[pcre]/code/trunk/pcre_ord2utf8.c
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Contents of /code/trunk/pcre_ord2utf8.c

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Revision 371 - (hide annotations) (download)
Mon Aug 25 18:28:05 2008 UTC (5 years, 8 months ago) by ph10
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File size: 3200 byte(s)
Source tidies for 7.8-RC1 

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 ph10 305 Copyright (c) 1997-2008 University of Cambridge
10 nigel 77
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 ph10 200 #ifdef HAVE_CONFIG_H
45 ph10 236 #include "config.h"
46 ph10 200 #endif
47    
48 nigel 77 #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 nigel 87 int
66 nigel 77 _pcre_ord2utf8(int cvalue, uschar *buffer)
67     {
68 ph10 110 #ifdef SUPPORT_UTF8
69 nigel 77 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 ph10 110 #else
81 ph10 369 (void)(cvalue); /* Keep compiler happy; this function won't ever be */
82 ph10 371 (void)(buffer); /* called when SUPPORT_UTF8 is not defined. */
83     return 0;
84     #endif
85 nigel 77 }
86    
87     /* End of pcre_ord2utf8.c */

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