| /* mbscmp - multibyte string comparison. */ |
| |
| /* Copyright (C) 1995 Free Software Foundation, Inc. |
| |
| This file is part of GNU Bash, the Bourne Again SHell. |
| |
| Bash is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| Bash is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Bash. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <config.h> |
| |
| #if !defined (HAVE_MBSCMP) && defined (HANDLE_MULTIBYTE) |
| |
| #include <stdlib.h> |
| #include <stddef.h> |
| #include <string.h> |
| |
| /* Compare MBS1 and MBS2. */ |
| int |
| mbscmp (mbs1, mbs2) |
| const char *mbs1; |
| const char *mbs2; |
| { |
| int len1, len2; |
| wchar_t c1, c2; |
| |
| len1 = len2 = 0; |
| /* Reset multibyte characters to their initial state. */ |
| (void) mblen ((char *) NULL, 0); |
| |
| do |
| { |
| len1 = mbtowc (&c1, mbs1, MB_CUR_MAX); |
| len2 = mbtowc (&c2, mbs2, MB_CUR_MAX); |
| |
| if (len1 == 0) |
| return len2 == 0 ? 0 : -1; |
| else if (len2 == 0) |
| return 1; |
| else if (len1 > 0 && len2 < 0) |
| return -1; |
| else if (len1 < 0 && len2 > 0) |
| return 1; |
| else if (len1 < 0 && len2 < 0) |
| { |
| len1 = strlen (mbs1); |
| len2 = strlen (mbs2); |
| return (len1 == len2 ? memcmp (mbs1, mbs2, len1) |
| : ((len1 < len2) ? (memcmp (mbs1, mbs2, len1) > 0 ? 1 : -1) |
| : (memcmp (mbs1, mbs2, len2) >= 0 ? 1 : -1))); |
| } |
| |
| mbs1 += len1; |
| mbs2 += len2; |
| } |
| while (c1 == c2); |
| |
| return c1 - c2; |
| } |
| |
| #endif |