File: macro.c

package info (click to toggle)
gdb 7.12-6
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 216,152 kB
  • ctags: 304,881
  • sloc: ansic: 2,141,328; asm: 331,662; exp: 133,348; makefile: 57,698; sh: 23,586; yacc: 14,054; cpp: 12,262; perl: 5,300; python: 4,685; ada: 4,343; xml: 3,670; pascal: 3,120; lisp: 1,516; cs: 879; lex: 624; f90: 457; sed: 228; awk: 142; objc: 134; java: 73; fortran: 43
file content (271 lines) | stat: -rw-r--r-- 6,917 bytes parent folder | download | duplicates (22)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
/* 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);
}