Age Owner Branch data TLA Line data Source code
1 : : /*
2 : : * src/backend/utils/mb/wstrncmp.c
3 : : *
4 : : *
5 : : * Copyright (c) 1989, 1993
6 : : * The Regents of the University of California. All rights reserved.
7 : : *
8 : : * This code is derived from FreeBSD 2.2.1-RELEASE software.
9 : : *
10 : : * Redistribution and use in source and binary forms, with or without
11 : : * modification, are permitted provided that the following conditions
12 : : * are met:
13 : : * 1. Redistributions of source code must retain the above copyright
14 : : * notice, this list of conditions and the following disclaimer.
15 : : * 2. Redistributions in binary form must reproduce the above copyright
16 : : * notice, this list of conditions and the following disclaimer in the
17 : : * documentation and/or other materials provided with the distribution.
18 : : * 3. Neither the name of the University nor the names of its contributors
19 : : * may be used to endorse or promote products derived from this software
20 : : * without specific prior written permission.
21 : : *
22 : : * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 : : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 : : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 : : * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 : : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 : : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 : : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 : : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 : : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 : : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 : : * SUCH DAMAGE.
33 : : */
34 : : /* can be used in either frontend or backend */
35 : : #include "postgres_fe.h"
36 : :
37 : : #include "mb/pg_wchar.h"
38 : :
39 : : int
7126 neilc@samurai.com 40 :UBC 0 : pg_wchar_strncmp(const pg_wchar *s1, const pg_wchar *s2, size_t n)
41 : : {
9527 scrappy@hub.org 42 [ # # ]: 0 : if (n == 0)
9357 bruce@momjian.us 43 : 0 : return 0;
44 : : do
45 : : {
9527 scrappy@hub.org 46 [ # # ]: 0 : if (*s1 != *s2++)
8421 tgl@sss.pgh.pa.us 47 : 0 : return (*s1 - *(s2 - 1));
9527 scrappy@hub.org 48 [ # # ]: 0 : if (*s1++ == 0)
49 : 0 : break;
50 [ # # ]: 0 : } while (--n != 0);
9357 bruce@momjian.us 51 : 0 : return 0;
52 : : }
53 : :
54 : : int
7126 neilc@samurai.com 55 :CBC 726 : pg_char_and_wchar_strncmp(const char *s1, const pg_wchar *s2, size_t n)
56 : : {
9527 scrappy@hub.org 57 [ - + ]: 726 : if (n == 0)
9357 bruce@momjian.us 58 :UBC 0 : return 0;
59 : : do
60 : : {
8421 tgl@sss.pgh.pa.us 61 [ + + ]:CBC 1214 : if ((pg_wchar) ((unsigned char) *s1) != *s2++)
62 : 608 : return ((pg_wchar) ((unsigned char) *s1) - *(s2 - 1));
9527 scrappy@hub.org 63 [ - + ]: 606 : if (*s1++ == 0)
9527 scrappy@hub.org 64 :UBC 0 : break;
9527 scrappy@hub.org 65 [ + + ]:CBC 606 : } while (--n != 0);
9357 bruce@momjian.us 66 : 118 : return 0;
67 : : }
68 : :
69 : : size_t
7126 neilc@samurai.com 70 :UBC 0 : pg_wchar_strlen(const pg_wchar *str)
71 : : {
72 : : const pg_wchar *s;
73 : :
8421 tgl@sss.pgh.pa.us 74 [ # # ]: 0 : for (s = str; *s; ++s)
75 : : ;
9357 bruce@momjian.us 76 : 0 : return (s - str);
77 : : }
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