mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
1d506c26d9
This commit is the result of the following actions:
- Running gdb/copyright.py to update all of the copyright headers to
include 2024,
- Manually updating a few files the copyright.py script told me to
update, these files had copyright headers embedded within the
file,
- Regenerating gdbsupport/Makefile.in to refresh it's copyright
date,
- Using grep to find other files that still mentioned 2023. If
these files were updated last year from 2022 to 2023 then I've
updated them this year to 2024.
I'm sure I've probably missed some dates. Feel free to fix them up as
you spot them.
125 lines
4.2 KiB
C
125 lines
4.2 KiB
C
/* Wide characters for gdb
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Copyright (C) 2009-2024 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef GDB_WCHAR_H
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#define GDB_WCHAR_H
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/* We handle three different modes here.
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Capable systems have the full suite: wchar_t support and iconv
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(perhaps via GNU libiconv). On these machines, full functionality
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is available. Note that full functionality is dependent on us
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being able to convert from an arbitrary encoding to wchar_t. In
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practice this means we look for __STDC_ISO_10646__ (where we know
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the name of the wchar_t encoding) or GNU libiconv, where we can use
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"wchar_t".
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DJGPP is known to have libiconv but not wchar_t support. On
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systems like this, we use the narrow character functions. The full
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functionality is available to the user, but many characters (those
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outside the narrow range) will be displayed as escapes.
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Finally, some systems do not have iconv, or are really broken
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(e.g., Solaris, which almost has all of this working, but where
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just enough is broken to make it too hard to use). Here we provide
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a phony iconv which only handles a single character set, and we
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provide wrappers for the wchar_t functionality we use. */
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#if defined (HAVE_ICONV)
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#include <iconv.h>
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#else
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/* This define is used elsewhere so we don't need to duplicate the
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same checking logic in multiple places. */
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#define PHONY_ICONV
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#endif
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#include <wchar.h>
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#include <wctype.h>
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/* We use "btowc" as a sentinel to detect functioning wchar_t support.
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We check for either __STDC_ISO_10646__ or a new-enough libiconv in
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order to ensure we can convert to and from wchar_t. We choose
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libiconv version 0x108 because it is the first version with
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iconvlist. */
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#if defined (HAVE_ICONV) && defined (HAVE_BTOWC) \
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&& (defined (__STDC_ISO_10646__) \
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|| (defined (_LIBICONV_VERSION) && _LIBICONV_VERSION >= 0x108))
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typedef wchar_t gdb_wchar_t;
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typedef wint_t gdb_wint_t;
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#define gdb_wcslen wcslen
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#define gdb_iswprint iswprint
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#define gdb_iswxdigit iswxdigit
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#define gdb_btowc btowc
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#define gdb_WEOF WEOF
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#define LCST(X) L ## X
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/* If __STDC_ISO_10646__ is defined, then the host wchar_t is UCS-4.
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We exploit this fact in the hope that there are hosts that define
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this but which do not support "wchar_t" as an encoding argument to
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iconv_open. We put the endianness into the encoding name to avoid
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hosts that emit a BOM when the unadorned name is used. */
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#if defined (__STDC_ISO_10646__)
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#define USE_INTERMEDIATE_ENCODING_FUNCTION
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#define INTERMEDIATE_ENCODING intermediate_encoding ()
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const char *intermediate_encoding (void);
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#elif defined (_LIBICONV_VERSION) && _LIBICONV_VERSION >= 0x108
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#define INTERMEDIATE_ENCODING "wchar_t"
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#else
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/* This shouldn't happen, because the earlier #if should have filtered
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out this case. */
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#error "Neither __STDC_ISO_10646__ nor _LIBICONV_VERSION defined"
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#endif
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#else
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/* If we got here and have wchar_t support, we might be on a system
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with some problem. So, we just disable everything. */
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#if defined (HAVE_BTOWC)
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#define PHONY_ICONV
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#endif
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typedef char gdb_wchar_t;
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typedef int gdb_wint_t;
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#define gdb_wcslen strlen
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#define gdb_iswprint isprint
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#define gdb_iswxdigit isxdigit
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#define gdb_btowc /* empty */
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#define gdb_WEOF EOF
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#define LCST(X) X
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/* If we are using the narrow character set, we want to use the host
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narrow encoding as our intermediate encoding. However, if we are
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also providing a phony iconv, we might as well just stick with
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"wchar_t". */
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#ifdef PHONY_ICONV
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#define INTERMEDIATE_ENCODING "wchar_t"
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#else
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#define INTERMEDIATE_ENCODING host_charset ()
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#endif
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#endif
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#endif /* GDB_WCHAR_H */
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