| 1 | /* Wide characters for gdb |
| 2 | Copyright (C) 2009 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 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 |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #ifndef GDB_WCHAR_H |
| 20 | #define GDB_WCHAR_H |
| 21 | |
| 22 | /* We handle three different modes here. |
| 23 | |
| 24 | Capable systems have the full suite: wchar_t support and iconv |
| 25 | (perhaps via GNU libiconv). On these machines, full functionality |
| 26 | is available. |
| 27 | |
| 28 | DJGPP is known to have libiconv but not wchar_t support. On |
| 29 | systems like this, we use the narrow character functions. The full |
| 30 | functionality is available to the user, but many characters (those |
| 31 | outside the narrow range) will be displayed as escapes. |
| 32 | |
| 33 | Finally, some systems do not have iconv. Here we provide a phony |
| 34 | iconv which only handles a single character set, and we provide |
| 35 | wrappers for the wchar_t functionality we use. */ |
| 36 | |
| 37 | |
| 38 | #define INTERMEDIATE_ENCODING "wchar_t" |
| 39 | |
| 40 | #if defined (HAVE_ICONV) |
| 41 | #include <iconv.h> |
| 42 | #else |
| 43 | /* This define is used elsewhere so we don't need to duplicate the |
| 44 | same checking logic in multiple places. */ |
| 45 | #define PHONY_ICONV |
| 46 | #endif |
| 47 | |
| 48 | /* We use "btowc" as a sentinel to detect functioning wchar_t |
| 49 | support. */ |
| 50 | #if defined (HAVE_ICONV) && defined (HAVE_WCHAR_H) && defined (HAVE_BTOWC) |
| 51 | |
| 52 | #include <wchar.h> |
| 53 | #include <wctype.h> |
| 54 | |
| 55 | typedef wchar_t gdb_wchar_t; |
| 56 | typedef wint_t gdb_wint_t; |
| 57 | |
| 58 | #define gdb_wcslen wcslen |
| 59 | #define gdb_iswprint iswprint |
| 60 | #define gdb_iswdigit iswdigit |
| 61 | #define gdb_btowc btowc |
| 62 | #define gdb_WEOF WEOF |
| 63 | |
| 64 | #define LCST(X) L ## X |
| 65 | |
| 66 | #else |
| 67 | |
| 68 | typedef char gdb_wchar_t; |
| 69 | typedef int gdb_wint_t; |
| 70 | |
| 71 | #define gdb_wcslen strlen |
| 72 | #define gdb_iswprint isprint |
| 73 | #define gdb_iswdigit isdigit |
| 74 | #define gdb_btowc /* empty */ |
| 75 | #define gdb_WEOF EOF |
| 76 | |
| 77 | #define LCST(X) X |
| 78 | |
| 79 | /* If we are using the narrow character set, we want to use the host |
| 80 | narrow encoding as our intermediate encoding. However, if we are |
| 81 | also providing a phony iconv, we might as well just stick with |
| 82 | "wchar_t". */ |
| 83 | #ifndef PHONY_ICONV |
| 84 | #undef INTERMEDIATE_ENCODING |
| 85 | #define INTERMEDIATE_ENCODING host_charset () |
| 86 | #endif |
| 87 | |
| 88 | #endif |
| 89 | |
| 90 | #endif /* GDB_WCHAR_H */ |