00001 /************************************************* 00002 * Perl-Compatible Regular Expressions * 00003 *************************************************/ 00004 00005 /* PCRE is a library of functions to support regular expressions whose syntax 00006 and semantics are as close as possible to those of the Perl 5 language. 00007 00008 Written by Philip Hazel 00009 Copyright (c) 1997-2008 University of Cambridge 00010 00011 ----------------------------------------------------------------------------- 00012 Redistribution and use in source and binary forms, with or without 00013 modification, are permitted provided that the following conditions are met: 00014 00015 * Redistributions of source code must retain the above copyright notice, 00016 this list of conditions and the following disclaimer. 00017 00018 * Redistributions in binary form must reproduce the above copyright 00019 notice, this list of conditions and the following disclaimer in the 00020 documentation and/or other materials provided with the distribution. 00021 00022 * Neither the name of the University of Cambridge nor the names of its 00023 contributors may be used to endorse or promote products derived from 00024 this software without specific prior written permission. 00025 00026 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00027 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00028 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00029 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00030 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00031 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00032 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00033 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00034 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00035 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00036 POSSIBILITY OF SUCH DAMAGE. 00037 ----------------------------------------------------------------------------- 00038 */ 00039 00040 00041 /* This file contains a private PCRE function that converts an ordinal 00042 character value into a UTF8 string. */ 00043 00044 #ifdef HAVE_CONFIG_H 00045 #include "config.h" 00046 #else if defined(_WINDOWS) 00047 #include <spl/configwin32.h> 00048 #endif 00049 00050 00051 #include "pcre_internal.h" 00052 00053 00054 /************************************************* 00055 * Convert character value to UTF-8 * 00056 *************************************************/ 00057 00058 /* This function takes an integer value in the range 0 - 0x7fffffff 00059 and encodes it as a UTF-8 character in 0 to 6 bytes. 00060 00061 Arguments: 00062 cvalue the character value 00063 buffer pointer to buffer for result - at least 6 bytes long 00064 00065 Returns: number of characters placed in the buffer 00066 */ 00067 00068 int 00069 _pcre_ord2utf8(int cvalue, uschar *buffer) 00070 { 00071 #ifdef SUPPORT_UTF8 00072 register int i, j; 00073 for (i = 0; i < _pcre_utf8_table1_size; i++) 00074 if (cvalue <= _pcre_utf8_table1[i]) break; 00075 buffer += i; 00076 for (j = i; j > 0; j--) 00077 { 00078 *buffer-- = 0x80 | (cvalue & 0x3f); 00079 cvalue >>= 6; 00080 } 00081 *buffer = _pcre_utf8_table2[i] | cvalue; 00082 return i + 1; 00083 #else 00084 (void)(cvalue); /* Keep compiler happy; this function won't ever be */ 00085 (void)(buffer); /* called when SUPPORT_UTF8 is not defined. */ 00086 return 0; 00087 #endif 00088 } 00089 00090 /* End of pcre_ord2utf8.c */