/* callback.c -- functions to use readline as an X `callback' mechanism. */
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2009 Free Software Foundation, Inc.
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
- The GNU Readline Library 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 1, or
+ 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.
- The GNU Readline Library 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
+ 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.
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 675 Mass Ave, Cambridge, MA 02139, USA. */
+ 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)
#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"
-extern void readline_internal_startup ();
-extern char *readline_internal_teardown ();
-extern int readline_internal_char ();
-extern void _rl_init_line_state ();
-
-extern int _rl_meta_flag;
-extern char *rl_prompt;
-extern int rl_visible_prompt_length;
+/* 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;
/* **************************************************************** */
/* */
-/* Callback Readline Functions */
+/* Callback Readline Functions */
/* */
/* **************************************************************** */
text read in at each end of line. The terminal is kept prepped and
signals handled all the time, except during calls to the user's function. */
-VFunction *rl_linefunc; /* user callback function */
+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. */
{
in_handler = 1;
- (*rl_prep_term_function) (_rl_meta_flag);
+ if (rl_prep_term_function)
+ (*rl_prep_term_function) (_rl_meta_flag);
#if defined (HANDLE_SIGNALS)
rl_set_signals ();
}
readline_internal_setup ();
+ RL_CHECK_SIGNALS ();
}
/* Install a readline handler, set up the terminal, and issue the prompt. */
void
rl_callback_handler_install (prompt, linefunc)
- char *prompt;
- VFunction *linefunc;
+ const char *prompt;
+ rl_vcpfunc_t *linefunc;
{
- rl_prompt = prompt;
- rl_visible_prompt_length = rl_prompt ? rl_expand_prompt (rl_prompt) : 0;
+ rl_set_prompt (prompt);
+ RL_SETSTATE (RL_STATE_CALLBACK);
rl_linefunc = linefunc;
_rl_callback_newline ();
}
rl_callback_read_char ()
{
char *line;
- int eof;
+ int eof, jcode;
+ static procenv_t olevel;
if (rl_linefunc == NULL)
{
- fprintf (stderr, "readline: readline_callback_read_char() called with no handler!\r\n");
+ _rl_errmsg ("readline_callback_read_char() called with no handler!");
abort ();
}
- eof = readline_internal_char ();
+ memcpy ((void *)olevel, (void *)_rl_top_level, sizeof (procenv_t));
+ jcode = setjmp (_rl_top_level);
+ if (jcode)
+ {
+ (*rl_redisplay_function) ();
+ _rl_want_redisplay = 0;
+ memcpy ((void *)_rl_top_level, (void *)olevel, sizeof (procenv_t));
+ return;
+ }
- if (rl_done)
+ do
{
- line = readline_internal_teardown (eof);
+ 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 ();
+
+ return;
+ }
+ else if (RL_ISSTATE (RL_STATE_NSEARCH))
+ {
+ eof = _rl_nsearch_callback (_rl_nscxt);
+ return;
+ }
+#if defined (VI_MODE)
+ 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 ();
+
+ 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 ();
+
+ 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 simply 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;
+ }
- (*rl_deprep_term_function) ();
+ if (rl_done)
+ {
+ line = readline_internal_teardown (eof);
+
+ if (rl_deprep_term_function)
+ (*rl_deprep_term_function) ();
#if defined (HANDLE_SIGNALS)
- rl_clear_signals ();
+ rl_clear_signals ();
#endif
- in_handler = 0;
- (*rl_linefunc) (line);
+ in_handler = 0;
+ (*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 ();
+ /* 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 ();
+ /* 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));
}
/* Remove the handler, and make sure the terminal is in its normal state. */
rl_callback_handler_remove ()
{
rl_linefunc = NULL;
+ RL_UNSETSTATE (RL_STATE_CALLBACK);
+ RL_CHECK_SIGNALS ();
if (in_handler)
{
in_handler = 0;
- (*rl_deprep_term_function) ();
+ 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 (count)
+ 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 (arg)
+ _rl_callback_generic_arg *arg;
+{
+ xfree (arg);
+}
+
#endif
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