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-rw-r--r--extra/readline/macro.c271
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diff --git a/extra/readline/macro.c b/extra/readline/macro.c
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+/* macro.c -- keyboard macros for readline. */
+
+/* Copyright (C) 1994 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.
+
+ 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 2, 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
+ 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,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA. */
+#define READLINE_LIBRARY
+
+#if defined (HAVE_CONFIG_H)
+# include "config_readline.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;
+ free (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)
+ {
+ free (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 __attribute__((unused)), ignore2 __attribute__((unused));
+{
+ 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 __attribute__((unused));
+{
+ 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 __attribute__((unused));
+{
+ 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);
+}
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