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 */ 91