Mercurial > hg > octave-kai > gnulib-hg
annotate lib/mbsncasecmp.c @ 17249:e542fd46ad6f
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
| author | Eric Blake <eblake@redhat.com> |
|---|---|
| date | Tue, 01 Jan 2013 00:50:58 +0000 (2013-01-01) |
| parents | 8250f2777afc |
| children |
| rev | line source |
|---|---|
| 8156 | 1 /* Case-insensitive string comparison function. |
|
17249
e542fd46ad6f
maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
parents:
16201
diff
changeset
|
2 Copyright (C) 1998-1999, 2005-2013 Free Software Foundation, Inc. |
| 8156 | 3 Written by Bruno Haible <bruno@clisp.org>, 2005, |
| 4 based on earlier glibc code. | |
| 5 | |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8156
diff
changeset
|
6 This program is free software: you can redistribute it and/or modify |
| 8156 | 7 it under the terms of the GNU General Public License as published by |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8156
diff
changeset
|
8 the Free Software Foundation; either version 3 of the License, or |
|
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8156
diff
changeset
|
9 (at your option) any later version. |
| 8156 | 10 |
| 11 This program is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 GNU General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU General Public License | |
|
9309
bbbbbf4cd1c5
Change copyright notice from GPLv2+ to GPLv3+.
Bruno Haible <bruno@clisp.org>
parents:
8156
diff
changeset
|
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 8156 | 18 |
| 19 #include <config.h> | |
| 20 | |
| 21 /* Specification. */ | |
| 22 #include <string.h> | |
| 23 | |
| 24 #include <ctype.h> | |
| 25 #include <limits.h> | |
| 26 | |
|
10954
a0bbe1a6f787
Remove HAVE_MBRTOWC conditionals. Use mbrtowc unconditionally.
Bruno Haible <bruno@clisp.org>
parents:
9309
diff
changeset
|
27 #include "mbuiter.h" |
| 8156 | 28 |
| 29 #define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch)) | |
| 30 | |
| 31 /* Compare the initial segment of the character string S1 consisting of at most | |
| 32 N characters with the initial segment of the character string S2 consisting | |
| 33 of at most N characters, ignoring case, returning less than, equal to or | |
| 34 greater than zero if the initial segment of S1 is lexicographically less | |
| 35 than, equal to or greater than the initial segment of S2. | |
| 36 Note: This function may, in multibyte locales, return 0 for initial segments | |
| 37 of different lengths! */ | |
| 38 int | |
| 39 mbsncasecmp (const char *s1, const char *s2, size_t n) | |
| 40 { | |
| 41 if (s1 == s2 || n == 0) | |
| 42 return 0; | |
| 43 | |
| 44 /* Be careful not to look at the entire extent of s1 or s2 until needed. | |
| 45 This is useful because when two strings differ, the difference is | |
| 46 most often already in the very few first characters. */ | |
| 47 if (MB_CUR_MAX > 1) | |
| 48 { | |
| 49 mbui_iterator_t iter1; | |
| 50 mbui_iterator_t iter2; | |
| 51 | |
| 52 mbui_init (iter1, s1); | |
| 53 mbui_init (iter2, s2); | |
| 54 | |
| 55 while (mbui_avail (iter1) && mbui_avail (iter2)) | |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
56 { |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
57 int cmp = mb_casecmp (mbui_cur (iter1), mbui_cur (iter2)); |
| 8156 | 58 |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
59 if (cmp != 0) |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
60 return cmp; |
| 8156 | 61 |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
62 if (--n == 0) |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
63 return 0; |
| 8156 | 64 |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
65 mbui_advance (iter1); |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
66 mbui_advance (iter2); |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
67 } |
| 8156 | 68 if (mbui_avail (iter1)) |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
69 /* s2 terminated before s1 and n. */ |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
70 return 1; |
| 8156 | 71 if (mbui_avail (iter2)) |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
72 /* s1 terminated before s2 and n. */ |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
73 return -1; |
| 8156 | 74 return 0; |
| 75 } | |
| 76 else | |
| 77 { | |
| 78 const unsigned char *p1 = (const unsigned char *) s1; | |
| 79 const unsigned char *p2 = (const unsigned char *) s2; | |
| 80 unsigned char c1, c2; | |
| 81 | |
| 82 for (; ; p1++, p2++) | |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
83 { |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
84 c1 = TOLOWER (*p1); |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
85 c2 = TOLOWER (*p2); |
| 8156 | 86 |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
87 if (--n == 0 || c1 == '\0' || c1 != c2) |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
88 break; |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
89 } |
| 8156 | 90 |
| 91 if (UCHAR_MAX <= INT_MAX) | |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
92 return c1 - c2; |
| 8156 | 93 else |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
94 /* On machines where 'char' and 'int' are types of the same size, the |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
95 difference of two 'unsigned char' values - including the sign bit - |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
96 doesn't fit in an 'int'. */ |
|
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
10954
diff
changeset
|
97 return (c1 > c2 ? 1 : c1 < c2 ? -1 : 0); |
| 8156 | 98 } |
| 99 } |