binutils-gdb/readline/rlmbutil.h
Patrick Palka 4a11f20659 Sync readline/ to version 7.0 alpha
This patch syncs our upstream copy of readline from version 6.2 to the
latest version, 7.0 alpha (released July 10 2015).

I essentially copied what was done the last time readline was synced,
when Jan updated to readline 6.2 in 2011:
http://sourceware.org/ml/gdb-patches/2011-05/msg00003.html

Procedure:

1. I extracted the readline-7.0-alpha tarball on top of readline/.
2. I deleted all the new files under doc/ that were deliberately omitted
   before.
3. I regenerated readline/configure and readline/examples/rlfe/configure
   using autoconf 2.64.  No other configure files need regenerating.
4. I updated the function gdb_printable_part in completer.c with a
   trivial change made to the readline function it is based off of,
   printable_part in readline/complete.c.  There is more work to be done in
   completer.c to sync it with readline/complete.c, but it is non-trivial
   and should probably be done separately anyway.

Local patches that had to be reapplied:

    None.  readline 7.0 alpha contains all of our local readline
    patches.

New files in readline/:

    colors.{c,h}
    examples/{hist_erasedups,hist_purgecmd,rl-callbacktest,rlbasic}.c
    parse-colors.{c,h}
    readline.pc.in
    configure.ac

Deleted files in readline/:

    configure.in

Regressions:

After the sync there is one testsuite regression, the test
"signal SIGINT" in gdb.gdb/selftest.exp which now FAILs.  Previously,
the readline 6.2 SIGINT handler would temporarily reinstall the
underlying application's SIGINT handler and immediately re-raise SIGINT
so that the orginal handler gets invoked.  But now (since readline 6.3)
its SIGINT handler does not re-raise SIGINT or directly invoke the
original handler; it now sets a flag marking that SIGINT was raised, and
waits until readline explicitly has control to call the application's
SIGINT handler.  Anyway, because SIGINT is no longer re-raised from
within readline's SIGINT handler, doing "signal SIGINT" with a stopped
inferior gdb process will no longer resume and then immediately stop the
process (since there is no 2nd SIGINT to immediately catch).  Instead,
the inferior gdb process will now just print "Quit" and continue to run.
So with this commit, this particular test case is adjusted to reflect
this change in behavior (we now have to send a 2nd SIGINT manually to
stop it).

Aside from this one testsuite regression, I personally noticed no
regression in user-visible behavior.  Though I only tested on x86_64
and on i686 Debian Stretch.

Getting this kind of change in at the start of the GDB 7.11 development
cycle will allow us to get a lot of passive testing from developers and
from bleeding-edge users.

readline/ChangeLog.gdb:

	Import readline 7.0 alpha
	* configure: Regenerate.
	* examples/rlfe/configure: Regenerate.

gdb/ChangeLog:

	* completer.c (gdb_printable_part): Sync with readline function
	it is based off of.

gdb/testsuite/ChangeLog:

	* gdb.gdb/selftest.exp (test_with_self): Update test to now
	expect the GDB inferior to no longer immediately stop after
	being resumed with "signal SIGINT".
2015-07-25 09:53:01 -04:00

204 lines
6.6 KiB
C

/* rlmbutil.h -- utility functions for multibyte characters. */
/* Copyright (C) 2001-2009 Free Software Foundation, Inc.
This file is part of the GNU Readline Library (Readline), a library
for reading lines of text with interactive input and history editing.
Readline 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.
Readline 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 Readline. If not, see <http://www.gnu.org/licenses/>.
*/
#if !defined (_RL_MBUTIL_H_)
#define _RL_MBUTIL_H_
#include "rlstdc.h"
/************************************************/
/* check multibyte capability for I18N code */
/************************************************/
/* For platforms which support the ISO C amendement 1 functionality we
support user defined character classes. */
/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */
#if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H) && defined (HAVE_LOCALE_H)
# include <wchar.h>
# include <wctype.h>
# if defined (HAVE_ISWCTYPE) && \
defined (HAVE_ISWLOWER) && \
defined (HAVE_ISWUPPER) && \
defined (HAVE_MBSRTOWCS) && \
defined (HAVE_MBRTOWC) && \
defined (HAVE_MBRLEN) && \
defined (HAVE_TOWLOWER) && \
defined (HAVE_TOWUPPER) && \
defined (HAVE_WCHAR_T) && \
defined (HAVE_WCWIDTH)
/* system is supposed to support XPG5 */
# define HANDLE_MULTIBYTE 1
# endif
#endif
/* If we don't want multibyte chars even on a system that supports them, let
the configuring user turn multibyte support off. */
#if defined (NO_MULTIBYTE_SUPPORT)
# undef HANDLE_MULTIBYTE
#endif
/* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */
#if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T)
# define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0)
# define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0)
# define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0)
# define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0)
# define mbrlen(s, n, ps) (mbrlen) (s, n, 0)
# define mbstate_t int
#endif
/* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to
handle multibyte chars (some systems define MB_LEN_MAX as 1) */
#ifdef HANDLE_MULTIBYTE
# include <limits.h>
# if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16)
# undef MB_LEN_MAX
# endif
# if !defined (MB_LEN_MAX)
# define MB_LEN_MAX 16
# endif
#endif
/************************************************/
/* end of multibyte capability checks for I18N */
/************************************************/
/*
* Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar:
*
* MB_FIND_ANY find any multibyte character
* MB_FIND_NONZERO find a non-zero-width multibyte character
*/
#define MB_FIND_ANY 0x00
#define MB_FIND_NONZERO 0x01
extern int _rl_find_prev_mbchar PARAMS((char *, int, int));
extern int _rl_find_next_mbchar PARAMS((char *, int, int, int));
#ifdef HANDLE_MULTIBYTE
extern int _rl_compare_chars PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *));
extern int _rl_get_char_len PARAMS((char *, mbstate_t *));
extern int _rl_adjust_point PARAMS((char *, int, mbstate_t *));
extern int _rl_read_mbchar PARAMS((char *, int));
extern int _rl_read_mbstring PARAMS((int, char *, int));
extern int _rl_is_mbchar_matched PARAMS((char *, int, int, char *, int));
extern wchar_t _rl_char_value PARAMS((char *, int));
extern int _rl_walphabetic PARAMS((wchar_t));
#define _rl_to_wupper(wc) (iswlower (wc) ? towupper (wc) : (wc))
#define _rl_to_wlower(wc) (iswupper (wc) ? towlower (wc) : (wc))
#define MB_NEXTCHAR(b,s,c,f) \
((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
? _rl_find_next_mbchar ((b), (s), (c), (f)) \
: ((s) + (c)))
#define MB_PREVCHAR(b,s,f) \
((MB_CUR_MAX > 1 && rl_byte_oriented == 0) \
? _rl_find_prev_mbchar ((b), (s), (f)) \
: ((s) - 1))
#define MB_INVALIDCH(x) ((x) == (size_t)-1 || (x) == (size_t)-2)
#define MB_NULLWCH(x) ((x) == 0)
/* Try and shortcut the printable ascii characters to cut down the number of
calls to a libc wcwidth() */
static inline int
_rl_wcwidth (wc)
wchar_t wc;
{
switch (wc)
{
case ' ': case '!': case '"': case '#': case '%':
case '&': case '\'': case '(': case ')': case '*':
case '+': case ',': case '-': case '.': case '/':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
case ':': case ';': case '<': case '=': case '>':
case '?':
case 'A': case 'B': case 'C': case 'D': case 'E':
case 'F': case 'G': case 'H': case 'I': case 'J':
case 'K': case 'L': case 'M': case 'N': case 'O':
case 'P': case 'Q': case 'R': case 'S': case 'T':
case 'U': case 'V': case 'W': case 'X': case 'Y':
case 'Z':
case '[': case '\\': case ']': case '^': case '_':
case 'a': case 'b': case 'c': case 'd': case 'e':
case 'f': case 'g': case 'h': case 'i': case 'j':
case 'k': case 'l': case 'm': case 'n': case 'o':
case 'p': case 'q': case 'r': case 's': case 't':
case 'u': case 'v': case 'w': case 'x': case 'y':
case 'z': case '{': case '|': case '}': case '~':
return 1;
default:
return wcwidth (wc);
}
}
/* Unicode combining characters range from U+0300 to U+036F */
#define UNICODE_COMBINING_CHAR(x) ((x) >= 768 && (x) <= 879)
#if defined (WCWIDTH_BROKEN)
# define WCWIDTH(wc) ((_rl_utf8locale && UNICODE_COMBINING_CHAR(wc)) ? 0 : _rl_wcwidth(wc))
#else
# define WCWIDTH(wc) _rl_wcwidth(wc)
#endif
#if defined (WCWIDTH_BROKEN)
# define IS_COMBINING_CHAR(x) (WCWIDTH(x) == 0 && iswcntrl(x) == 0)
#else
# define IS_COMBINING_CHAR(x) (WCWIDTH(x) == 0)
#endif
#else /* !HANDLE_MULTIBYTE */
#undef MB_LEN_MAX
#undef MB_CUR_MAX
#define MB_LEN_MAX 1
#define MB_CUR_MAX 1
#define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1))
#define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2))
#define _rl_char_value(buf,ind) ((buf)[(ind)])
#define _rl_walphabetic(c) (rl_alphabetic (c))
#define _rl_to_wupper(c) (_rl_to_upper (c))
#define _rl_to_wlower(c) (_rl_to_lower (c))
#define MB_NEXTCHAR(b,s,c,f) ((s) + (c))
#define MB_PREVCHAR(b,s,f) ((s) - 1)
#define MB_INVALIDCH(x) (0)
#define MB_NULLWCH(x) (0)
#endif /* !HANDLE_MULTIBYTE */
extern int rl_byte_oriented;
#endif /* _RL_MBUTIL_H_ */