Mercurial > hg > octave-lojdl > gnulib-hg
annotate lib/wcscoll-impl.h @ 17464:290d581e2e24
autoupdate
| author | Karl Berry <karl@freefriends.org> |
|---|---|
| date | Sat, 10 Aug 2013 07:10:55 -0700 |
| parents | e542fd46ad6f |
| children |
| rev | line source |
|---|---|
| 14293 | 1 /* Compare two wide strings using the current locale. |
|
17249
e542fd46ad6f
maint: update all copyright year number ranges
Eric Blake <eblake@redhat.com>
parents:
16201
diff
changeset
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2 Copyright (C) 2011-2013 Free Software Foundation, Inc. |
| 14293 | 3 Written by Bruno Haible <bruno@clisp.org>, 2011. |
| 4 | |
| 5 This program is free software: you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 3 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 17 | |
| 18 int | |
| 19 wcscoll (const wchar_t *s1, const wchar_t *s2) | |
| 20 { | |
| 21 char mbbuf1[1024]; | |
| 22 char mbbuf2[1024]; | |
| 23 char *mbs1; | |
| 24 char *mbs2; | |
| 25 | |
| 26 { | |
| 27 int saved_errno = errno; | |
| 28 | |
| 29 /* Convert s1 to a multibyte string, trying to avoid malloc(). */ | |
| 30 { | |
| 31 size_t ret; | |
| 32 | |
| 33 ret = wcstombs (mbbuf1, s1, sizeof (mbbuf1)); | |
| 34 if (ret == (size_t)-1) | |
| 35 goto failed1; | |
| 36 if (ret < sizeof (mbbuf1)) | |
| 37 mbs1 = mbbuf1; | |
| 38 else | |
| 39 { | |
| 40 size_t need = wcstombs (NULL, s1, 0); | |
| 41 if (need == (size_t)-1) | |
| 42 goto failed1; | |
| 43 mbs1 = (char *) malloc (need + 1); | |
| 44 if (mbs1 == NULL) | |
| 45 goto out_of_memory1; | |
| 46 ret = wcstombs (mbs1, s1, need + 1); | |
| 47 if (ret != need) | |
| 48 abort (); | |
| 49 } | |
| 50 } | |
| 51 | |
| 52 /* Convert s2 to a multibyte string, trying to avoid malloc(). */ | |
| 53 { | |
| 54 size_t ret; | |
| 55 | |
| 56 ret = wcstombs (mbbuf2, s2, sizeof (mbbuf2)); | |
| 57 if (ret == (size_t)-1) | |
| 58 goto failed2; | |
| 59 if (ret < sizeof (mbbuf2)) | |
| 60 mbs2 = mbbuf2; | |
| 61 else | |
| 62 { | |
| 63 size_t need = wcstombs (NULL, s2, 0); | |
| 64 if (need == (size_t)-1) | |
| 65 goto failed2; | |
| 66 mbs2 = (char *) malloc (need + 1); | |
| 67 if (mbs2 == NULL) | |
| 68 goto out_of_memory2; | |
| 69 ret = wcstombs (mbs2, s2, need + 1); | |
| 70 if (ret != need) | |
| 71 abort (); | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 /* No error so far. */ | |
| 76 errno = saved_errno; | |
| 77 } | |
| 78 | |
| 79 /* Compare the two multibyte strings. */ | |
| 80 { | |
| 81 int result = strcoll (mbs1, mbs2); | |
| 82 | |
| 83 if (mbs1 != mbbuf1) | |
| 84 { | |
| 85 int saved_errno = errno; | |
| 86 free (mbs1); | |
| 87 errno = saved_errno; | |
| 88 } | |
| 89 if (mbs2 != mbbuf2) | |
| 90 { | |
| 91 int saved_errno = errno; | |
| 92 free (mbs2); | |
| 93 errno = saved_errno; | |
| 94 } | |
| 95 return result; | |
| 96 } | |
| 97 | |
| 98 out_of_memory2: | |
| 99 if (mbs1 != mbbuf1) | |
| 100 free (mbs1); | |
| 101 out_of_memory1: | |
| 102 errno = ENOMEM; | |
| 103 return 0; | |
| 104 | |
| 105 failed2: | |
| 106 if (mbs1 != mbbuf1) | |
| 107 free (mbs1); | |
| 108 failed1: | |
| 109 errno = EILSEQ; | |
| 110 return 0; | |
| 111 } |