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Adding upstream version 5.2.37.

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Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
This commit is contained in:
Daniel Baumann 2025-06-21 06:49:21 +02:00
parent cf91100bce
commit fa1b3d3922
Signed by: daniel.baumann
GPG key ID: BCC918A2ABD66424
1435 changed files with 757174 additions and 0 deletions
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378
lib/readline/callback.c Normal file
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/* callback.c -- functions to use readline as an X `callback' mechanism. */
/* Copyright (C) 1987-2022 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/>.
*/
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#include "rlconf.h"
#if defined (READLINE_CALLBACKS)
#include <sys/types.h>
#ifdef HAVE_STDLIB_H
# include <stdlib.h>
#else
# include "ansi_stdlib.h"
#endif
#include <stdio.h>
/* System-specific feature definitions and include files. */
#include "rldefs.h"
#include "readline.h"
#include "rlprivate.h"
#include "xmalloc.h"
/* Private data for callback registration functions. See comments in
rl_callback_read_char for more details. */
_rl_callback_func_t *_rl_callback_func = 0;
_rl_callback_generic_arg *_rl_callback_data = 0;
/* Applications can set this to non-zero to have readline's signal handlers
installed during the entire duration of reading a complete line, as in
readline-6.2. This should be used with care, because it can result in
readline receiving signals and not handling them until it's called again
via rl_callback_read_char, thereby stealing them from the application.
By default, signal handlers are only active while readline is active. */
int rl_persistent_signal_handlers = 0;
/* **************************************************************** */
/* */
/* Callback Readline Functions */
/* */
/* **************************************************************** */
/* Allow using readline in situations where a program may have multiple
things to handle at once, and dispatches them via select(). Call
rl_callback_handler_install() with the prompt and a function to call
whenever a complete line of input is ready. The user must then
call rl_callback_read_char() every time some input is available, and
rl_callback_read_char() will call the user's function with the complete
text read in at each end of line. The terminal is kept prepped
all the time, except during calls to the user's function. Signal
handlers are only installed when the application calls back into
readline, so readline doesn't `steal' signals from the application. */
rl_vcpfunc_t *rl_linefunc; /* user callback function */
static int in_handler; /* terminal_prepped and signals set? */
/* Make sure the terminal is set up, initialize readline, and prompt. */
static void
_rl_callback_newline (void)
{
rl_initialize ();
if (in_handler == 0)
{
in_handler = 1;
if (rl_prep_term_function)
(*rl_prep_term_function) (_rl_meta_flag);
#if defined (HANDLE_SIGNALS)
if (rl_persistent_signal_handlers)
rl_set_signals ();
#endif
}
readline_internal_setup ();
RL_CHECK_SIGNALS ();
}
/* Install a readline handler, set up the terminal, and issue the prompt. */
void
rl_callback_handler_install (const char *prompt, rl_vcpfunc_t *linefunc)
{
rl_set_prompt (prompt);
RL_SETSTATE (RL_STATE_CALLBACK);
rl_linefunc = linefunc;
_rl_callback_newline ();
}
#if defined (HANDLE_SIGNALS)
#define CALLBACK_READ_RETURN() \
do { \
if (rl_persistent_signal_handlers == 0) \
rl_clear_signals (); \
return; \
} while (0)
#else
#define CALLBACK_READ_RETURN() return
#endif
/* Read one character, and dispatch to the handler if it ends the line. */
void
rl_callback_read_char (void)
{
char *line;
int eof, jcode;
static procenv_t olevel;
if (rl_linefunc == NULL)
{
_rl_errmsg ("readline_callback_read_char() called with no handler!");
abort ();
}
eof = 0;
memcpy ((void *)olevel, (void *)_rl_top_level, sizeof (procenv_t));
#if defined (HAVE_POSIX_SIGSETJMP)
jcode = sigsetjmp (_rl_top_level, 0);
#else
jcode = setjmp (_rl_top_level);
#endif
if (jcode)
{
(*rl_redisplay_function) ();
_rl_want_redisplay = 0;
memcpy ((void *)_rl_top_level, (void *)olevel, sizeof (procenv_t));
/* If we longjmped because of a timeout, handle it here. */
if (RL_ISSTATE (RL_STATE_TIMEOUT))
{
RL_SETSTATE (RL_STATE_DONE);
rl_done = 1;
}
CALLBACK_READ_RETURN ();
}
#if defined (HANDLE_SIGNALS)
/* Install signal handlers only when readline has control. */
if (rl_persistent_signal_handlers == 0)
rl_set_signals ();
#endif
do
{
RL_CHECK_SIGNALS ();
if (RL_ISSTATE (RL_STATE_ISEARCH))
{
eof = _rl_isearch_callback (_rl_iscxt);
if (eof == 0 && (RL_ISSTATE (RL_STATE_ISEARCH) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING))
rl_callback_read_char ();
CALLBACK_READ_RETURN ();
}
else if (RL_ISSTATE (RL_STATE_NSEARCH))
{
eof = _rl_nsearch_callback (_rl_nscxt);
CALLBACK_READ_RETURN ();
}
#if defined (VI_MODE)
/* States that can occur while in state VIMOTION have to be checked
before RL_STATE_VIMOTION */
else if (RL_ISSTATE (RL_STATE_CHARSEARCH))
{
int k;
k = _rl_callback_data->i2;
eof = (*_rl_callback_func) (_rl_callback_data);
/* If the function `deregisters' itself, make sure the data is
cleaned up. */
if (_rl_callback_func == 0) /* XXX - just sanity check */
{
if (_rl_callback_data)
{
_rl_callback_data_dispose (_rl_callback_data);
_rl_callback_data = 0;
}
}
/* Messy case where vi motion command can be char search */
if (RL_ISSTATE (RL_STATE_VIMOTION))
{
_rl_vi_domove_motion_cleanup (k, _rl_vimvcxt);
_rl_internal_char_cleanup ();
CALLBACK_READ_RETURN ();
}
_rl_internal_char_cleanup ();
}
else if (RL_ISSTATE (RL_STATE_VIMOTION))
{
eof = _rl_vi_domove_callback (_rl_vimvcxt);
/* Should handle everything, including cleanup, numeric arguments,
and turning off RL_STATE_VIMOTION */
if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)
_rl_internal_char_cleanup ();
CALLBACK_READ_RETURN ();
}
#endif
else if (RL_ISSTATE (RL_STATE_NUMERICARG))
{
eof = _rl_arg_callback (_rl_argcxt);
if (eof == 0 && (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING))
rl_callback_read_char ();
/* XXX - this should handle _rl_last_command_was_kill better */
else if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0)
_rl_internal_char_cleanup ();
CALLBACK_READ_RETURN ();
}
else if (RL_ISSTATE (RL_STATE_MULTIKEY))
{
eof = _rl_dispatch_callback (_rl_kscxt); /* For now */
while ((eof == -1 || eof == -2) && RL_ISSTATE (RL_STATE_MULTIKEY) && _rl_kscxt && (_rl_kscxt->flags & KSEQ_DISPATCHED))
eof = _rl_dispatch_callback (_rl_kscxt);
if (RL_ISSTATE (RL_STATE_MULTIKEY) == 0)
{
_rl_internal_char_cleanup ();
_rl_want_redisplay = 1;
}
}
else if (_rl_callback_func)
{
/* This allows functions that simply need to read an additional
character (like quoted-insert) to register a function to be
called when input is available. _rl_callback_data is a
pointer to a struct that has the argument count originally
passed to the registering function and space for any additional
parameters. */
eof = (*_rl_callback_func) (_rl_callback_data);
/* If the function `deregisters' itself, make sure the data is
cleaned up. */
if (_rl_callback_func == 0)
{
if (_rl_callback_data)
{
_rl_callback_data_dispose (_rl_callback_data);
_rl_callback_data = 0;
}
_rl_internal_char_cleanup ();
}
}
else
eof = readline_internal_char ();
RL_CHECK_SIGNALS ();
if (rl_done == 0 && _rl_want_redisplay)
{
(*rl_redisplay_function) ();
_rl_want_redisplay = 0;
}
/* Make sure application hooks can see whether we saw EOF. */
if (eof > 0)
{
rl_eof_found = eof;
RL_SETSTATE(RL_STATE_EOF);
}
if (rl_done)
{
line = readline_internal_teardown (eof);
if (rl_deprep_term_function)
(*rl_deprep_term_function) ();
#if defined (HANDLE_SIGNALS)
rl_clear_signals ();
#endif
in_handler = 0;
if (rl_linefunc) /* just in case */
(*rl_linefunc) (line);
/* If the user did not clear out the line, do it for him. */
if (rl_line_buffer[0])
_rl_init_line_state ();
/* Redisplay the prompt if readline_handler_{install,remove}
not called. */
if (in_handler == 0 && rl_linefunc)
_rl_callback_newline ();
}
}
while (rl_pending_input || _rl_pushed_input_available () || RL_ISSTATE (RL_STATE_MACROINPUT));
CALLBACK_READ_RETURN ();
}
/* Remove the handler, and make sure the terminal is in its normal state. */
void
rl_callback_handler_remove (void)
{
rl_linefunc = NULL;
RL_UNSETSTATE (RL_STATE_CALLBACK);
RL_CHECK_SIGNALS ();
if (in_handler)
{
in_handler = 0;
if (rl_deprep_term_function)
(*rl_deprep_term_function) ();
#if defined (HANDLE_SIGNALS)
rl_clear_signals ();
#endif
}
}
_rl_callback_generic_arg *
_rl_callback_data_alloc (int count)
{
_rl_callback_generic_arg *arg;
arg = (_rl_callback_generic_arg *)xmalloc (sizeof (_rl_callback_generic_arg));
arg->count = count;
arg->i1 = arg->i2 = 0;
return arg;
}
void
_rl_callback_data_dispose (_rl_callback_generic_arg *arg)
{
xfree (arg);
}
/* Make sure that this agrees with cases in rl_callback_read_char */
void
rl_callback_sigcleanup (void)
{
if (RL_ISSTATE (RL_STATE_CALLBACK) == 0)
return;
if (RL_ISSTATE (RL_STATE_ISEARCH))
_rl_isearch_cleanup (_rl_iscxt, 0);
else if (RL_ISSTATE (RL_STATE_NSEARCH))
_rl_nsearch_cleanup (_rl_nscxt, 0);
else if (RL_ISSTATE (RL_STATE_VIMOTION))
RL_UNSETSTATE (RL_STATE_VIMOTION);
else if (RL_ISSTATE (RL_STATE_NUMERICARG))
{
_rl_argcxt = 0;
RL_UNSETSTATE (RL_STATE_NUMERICARG);
}
else if (RL_ISSTATE (RL_STATE_MULTIKEY))
RL_UNSETSTATE (RL_STATE_MULTIKEY);
if (RL_ISSTATE (RL_STATE_CHARSEARCH))
RL_UNSETSTATE (RL_STATE_CHARSEARCH);
_rl_callback_func = 0;
}
#endif