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binutils-gdb/readline/macro.c
Patrick Palka 5836a818ec Revert "Sync readline/ to version 7.0 alpha"
This reverts commit b558ff043d.
This reverts commit 4a11f20659.

The initial import commit failed to retain local changes made to
readline's configure.in (and the commit message erroneously stated that
there were no local changes that needed to be reapplied).  Also the
import caused a couple of build errors and a scattering of testsuite
regressions throughout many arches.  It's probably better to start over
with this import, hopefully more carefully next time.
2015-07-25 15:57:00 -04:00

272 lines
6.8 KiB
C

/* macro.c -- keyboard macros for readline. */
/* Copyright (C) 1994-2009 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/>.
*/
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
#include <sys/types.h>
#if defined (HAVE_UNISTD_H)
# include <unistd.h> /* for _POSIX_VERSION */
#endif /* HAVE_UNISTD_H */
#if defined (HAVE_STDLIB_H)
# include <stdlib.h>
#else
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
#include <stdio.h>
/* System-specific feature definitions and include files. */
#include "rldefs.h"
/* Some standard library routines. */
#include "readline.h"
#include "history.h"
#include "rlprivate.h"
#include "xmalloc.h"
/* **************************************************************** */
/* */
/* Hacking Keyboard Macros */
/* */
/* **************************************************************** */
/* The currently executing macro string. If this is non-zero,
then it is a malloc ()'ed string where input is coming from. */
char *rl_executing_macro = (char *)NULL;
/* The offset in the above string to the next character to be read. */
static int executing_macro_index;
/* The current macro string being built. Characters get stuffed
in here by add_macro_char (). */
static char *current_macro = (char *)NULL;
/* The size of the buffer allocated to current_macro. */
static int current_macro_size;
/* The index at which characters are being added to current_macro. */
static int current_macro_index;
/* A structure used to save nested macro strings.
It is a linked list of string/index for each saved macro. */
struct saved_macro {
struct saved_macro *next;
char *string;
int sindex;
};
/* The list of saved macros. */
static struct saved_macro *macro_list = (struct saved_macro *)NULL;
/* Set up to read subsequent input from STRING.
STRING is free ()'ed when we are done with it. */
void
_rl_with_macro_input (string)
char *string;
{
_rl_push_executing_macro ();
rl_executing_macro = string;
executing_macro_index = 0;
RL_SETSTATE(RL_STATE_MACROINPUT);
}
/* Return the next character available from a macro, or 0 if
there are no macro characters. */
int
_rl_next_macro_key ()
{
int c;
if (rl_executing_macro == 0)
return (0);
if (rl_executing_macro[executing_macro_index] == 0)
{
_rl_pop_executing_macro ();
return (_rl_next_macro_key ());
}
#if defined (READLINE_CALLBACKS)
c = rl_executing_macro[executing_macro_index++];
if (RL_ISSTATE (RL_STATE_CALLBACK) && RL_ISSTATE (RL_STATE_READCMD|RL_STATE_MOREINPUT) && rl_executing_macro[executing_macro_index] == 0)
_rl_pop_executing_macro ();
return c;
#else
return (rl_executing_macro[executing_macro_index++]);
#endif
}
/* Save the currently executing macro on a stack of saved macros. */
void
_rl_push_executing_macro ()
{
struct saved_macro *saver;
saver = (struct saved_macro *)xmalloc (sizeof (struct saved_macro));
saver->next = macro_list;
saver->sindex = executing_macro_index;
saver->string = rl_executing_macro;
macro_list = saver;
}
/* Discard the current macro, replacing it with the one
on the top of the stack of saved macros. */
void
_rl_pop_executing_macro ()
{
struct saved_macro *macro;
FREE (rl_executing_macro);
rl_executing_macro = (char *)NULL;
executing_macro_index = 0;
if (macro_list)
{
macro = macro_list;
rl_executing_macro = macro_list->string;
executing_macro_index = macro_list->sindex;
macro_list = macro_list->next;
xfree (macro);
}
if (rl_executing_macro == 0)
RL_UNSETSTATE(RL_STATE_MACROINPUT);
}
/* Add a character to the macro being built. */
void
_rl_add_macro_char (c)
int c;
{
if (current_macro_index + 1 >= current_macro_size)
{
if (current_macro == 0)
current_macro = (char *)xmalloc (current_macro_size = 25);
else
current_macro = (char *)xrealloc (current_macro, current_macro_size += 25);
}
current_macro[current_macro_index++] = c;
current_macro[current_macro_index] = '\0';
}
void
_rl_kill_kbd_macro ()
{
if (current_macro)
{
xfree (current_macro);
current_macro = (char *) NULL;
}
current_macro_size = current_macro_index = 0;
FREE (rl_executing_macro);
rl_executing_macro = (char *) NULL;
executing_macro_index = 0;
RL_UNSETSTATE(RL_STATE_MACRODEF);
}
/* Begin defining a keyboard macro.
Keystrokes are recorded as they are executed.
End the definition with rl_end_kbd_macro ().
If a numeric argument was explicitly typed, then append this
definition to the end of the existing macro, and start by
re-executing the existing macro. */
int
rl_start_kbd_macro (ignore1, ignore2)
int ignore1, ignore2;
{
if (RL_ISSTATE (RL_STATE_MACRODEF))
{
_rl_abort_internal ();
return -1;
}
if (rl_explicit_arg)
{
if (current_macro)
_rl_with_macro_input (savestring (current_macro));
}
else
current_macro_index = 0;
RL_SETSTATE(RL_STATE_MACRODEF);
return 0;
}
/* Stop defining a keyboard macro.
A numeric argument says to execute the macro right now,
that many times, counting the definition as the first time. */
int
rl_end_kbd_macro (count, ignore)
int count, ignore;
{
if (RL_ISSTATE (RL_STATE_MACRODEF) == 0)
{
_rl_abort_internal ();
return -1;
}
current_macro_index -= rl_key_sequence_length - 1;
current_macro[current_macro_index] = '\0';
RL_UNSETSTATE(RL_STATE_MACRODEF);
return (rl_call_last_kbd_macro (--count, 0));
}
/* Execute the most recently defined keyboard macro.
COUNT says how many times to execute it. */
int
rl_call_last_kbd_macro (count, ignore)
int count, ignore;
{
if (current_macro == 0)
_rl_abort_internal ();
if (RL_ISSTATE (RL_STATE_MACRODEF))
{
rl_ding (); /* no recursive macros */
current_macro[--current_macro_index] = '\0'; /* erase this char */
return 0;
}
while (count--)
_rl_with_macro_input (savestring (current_macro));
return 0;
}
void
rl_push_macro_input (macro)
char *macro;
{
_rl_with_macro_input (macro);
}