| 1 | /************************************************* |
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| 2 | * Perl-Compatible Regular Expressions * |
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| 3 | *************************************************/ |
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| 4 | |
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| 5 | /* PCRE is a library of functions to support regular expressions whose syntax |
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| 6 | and semantics are as close as possible to those of the Perl 5 language. |
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| 7 | |
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| 8 | Written by Philip Hazel |
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| 9 | Copyright (c) 1997-2008 University of Cambridge |
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| 10 | |
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| 11 | ----------------------------------------------------------------------------- |
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| 12 | Redistribution and use in source and binary forms, with or without |
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| 13 | modification, are permitted provided that the following conditions are met: |
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| 14 | |
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| 15 | * Redistributions of source code must retain the above copyright notice, |
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| 16 | this list of conditions and the following disclaimer. |
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| 17 | |
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| 18 | * Redistributions in binary form must reproduce the above copyright |
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| 19 | notice, this list of conditions and the following disclaimer in the |
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| 20 | documentation and/or other materials provided with the distribution. |
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| 21 | |
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| 22 | * Neither the name of the University of Cambridge nor the names of its |
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| 23 | contributors may be used to endorse or promote products derived from |
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| 24 | this software without specific prior written permission. |
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| 25 | |
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| 26 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 27 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 28 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 29 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 30 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 31 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 32 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 33 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 34 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 35 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 36 | POSSIBILITY OF SUCH DAMAGE. |
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| 37 | ----------------------------------------------------------------------------- |
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| 38 | */ |
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| 39 | |
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| 40 | |
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| 41 | /* This file contains a private PCRE function that converts an ordinal |
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| 42 | character value into a UTF8 string. */ |
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| 43 | |
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| 44 | #include "pcre_config.h" |
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| 45 | #include "pcre_internal.h" |
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| 46 | |
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| 47 | |
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| 48 | /************************************************* |
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| 49 | * Convert character value to UTF-8 * |
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| 50 | *************************************************/ |
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| 51 | |
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| 52 | /* This function takes an integer value in the range 0 - 0x7fffffff |
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| 53 | and encodes it as a UTF-8 character in 0 to 6 bytes. |
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| 54 | |
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| 55 | Arguments: |
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| 56 | cvalue the character value |
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| 57 | buffer pointer to buffer for result - at least 6 bytes long |
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| 58 | |
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| 59 | Returns: number of characters placed in the buffer |
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| 60 | */ |
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| 61 | |
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| 62 | int |
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| 63 | _pcre_ord2utf8(int cvalue, uschar *buffer) |
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| 64 | { |
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| 65 | #ifdef SUPPORT_UTF8 |
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| 66 | register int i, j; |
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| 67 | for (i = 0; i < _pcre_utf8_table1_size; i++) |
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| 68 | if (cvalue <= _pcre_utf8_table1[i]) break; |
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| 69 | buffer += i; |
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| 70 | for (j = i; j > 0; j--) |
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| 71 | { |
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| 72 | *buffer-- = 0x80 | (cvalue & 0x3f); |
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| 73 | cvalue >>= 6; |
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| 74 | } |
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| 75 | *buffer = _pcre_utf8_table2[i] | cvalue; |
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| 76 | return i + 1; |
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| 77 | #else |
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| 78 | (void)(cvalue); /* Keep compiler happy; this function won't ever be */ |
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| 79 | (void)(buffer); /* called when SUPPORT_UTF8 is not defined. */ |
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| 80 | return 0; |
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| 81 | #endif |
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| 82 | } |
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| 83 | |
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| 84 | /* End of pcre_ord2utf8.c */ |
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