1 /* GDB CLI command scripting.
3 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 Free Software
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
26 #include "language.h" /* For value_true */
30 #include "gdb_string.h"
33 #include "cli/cli-cmds.h"
34 #include "cli/cli-decode.h"
35 #include "cli/cli-script.h"
37 /* Prototypes for local functions */
39 static enum command_control_type
40 recurse_read_control_structure (struct command_line *current_cmd);
42 static char *insert_args (char *line);
44 static struct cleanup * setup_user_args (char *p);
46 static void validate_comname (char *);
48 /* Level of control structure. */
49 static int control_level;
51 /* Source command state variable. */
52 static int source_error_allocated;
54 /* Structure for arguments to user defined functions. */
55 #define MAXUSERARGS 10
58 struct user_args *next;
70 /* Allocate, initialize a new command line structure for one of the
71 control commands (if/while). */
73 static struct command_line *
74 build_command_line (enum command_control_type type, char *args)
76 struct command_line *cmd;
79 error ("if/while commands require arguments.\n");
81 cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
83 cmd->control_type = type;
87 = (struct command_line **) xmalloc (sizeof (struct command_line *)
89 memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
90 cmd->line = savestring (args, strlen (args));
94 /* Build and return a new command structure for the control commands
95 such as "if" and "while". */
97 static struct command_line *
98 get_command_line (enum command_control_type type, char *arg)
100 struct command_line *cmd;
101 struct cleanup *old_chain = NULL;
103 /* Allocate and build a new command line structure. */
104 cmd = build_command_line (type, arg);
106 old_chain = make_cleanup_free_command_lines (&cmd);
108 /* Read in the body of this command. */
109 if (recurse_read_control_structure (cmd) == invalid_control)
111 warning ("error reading in control structure\n");
112 do_cleanups (old_chain);
116 discard_cleanups (old_chain);
120 /* Recursively print a command (including full control structures). */
123 print_command_lines (struct ui_out *uiout, struct command_line *cmd,
126 struct command_line *list;
133 ui_out_spaces (uiout, 2 * depth);
135 /* A simple command, print it and continue. */
136 if (list->control_type == simple_control)
138 ui_out_field_string (uiout, NULL, list->line);
139 ui_out_text (uiout, "\n");
144 /* loop_continue to jump to the start of a while loop, print it
146 if (list->control_type == continue_control)
148 ui_out_field_string (uiout, NULL, "loop_continue");
149 ui_out_text (uiout, "\n");
154 /* loop_break to break out of a while loop, print it and continue. */
155 if (list->control_type == break_control)
157 ui_out_field_string (uiout, NULL, "loop_break");
158 ui_out_text (uiout, "\n");
163 /* A while command. Recursively print its subcommands and continue. */
164 if (list->control_type == while_control)
166 ui_out_field_fmt (uiout, NULL, "while %s", list->line);
167 ui_out_text (uiout, "\n");
168 print_command_lines (uiout, *list->body_list, depth + 1);
170 ui_out_spaces (uiout, 2 * depth);
171 ui_out_field_string (uiout, NULL, "end");
172 ui_out_text (uiout, "\n");
177 /* An if command. Recursively print both arms before continueing. */
178 if (list->control_type == if_control)
180 ui_out_field_fmt (uiout, NULL, "if %s", list->line);
181 ui_out_text (uiout, "\n");
183 print_command_lines (uiout, list->body_list[0], depth + 1);
185 /* Show the false arm if it exists. */
186 if (list->body_count == 2)
189 ui_out_spaces (uiout, 2 * depth);
190 ui_out_field_string (uiout, NULL, "else");
191 ui_out_text (uiout, "\n");
192 print_command_lines (uiout, list->body_list[1], depth + 1);
196 ui_out_spaces (uiout, 2 * depth);
197 ui_out_field_string (uiout, NULL, "end");
198 ui_out_text (uiout, "\n");
203 /* ignore illegal command type and try next */
208 /* Handle pre-post hooks. */
211 clear_hook_in_cleanup (void *data)
213 struct cmd_list_element *c = data;
214 c->hook_in = 0; /* Allow hook to work again once it is complete */
218 execute_cmd_pre_hook (struct cmd_list_element *c)
220 if ((c->hook_pre) && (!c->hook_in))
222 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
223 c->hook_in = 1; /* Prevent recursive hooking */
224 execute_user_command (c->hook_pre, (char *) 0);
225 do_cleanups (cleanups);
230 execute_cmd_post_hook (struct cmd_list_element *c)
232 if ((c->hook_post) && (!c->hook_in))
234 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
235 c->hook_in = 1; /* Prevent recursive hooking */
236 execute_user_command (c->hook_post, (char *) 0);
237 do_cleanups (cleanups);
241 /* Execute the command in CMD. */
243 do_restore_user_call_depth (void * call_depth)
245 int * depth = call_depth;
246 /* We will be returning_to_top_level() at this point, so we want to
253 execute_user_command (struct cmd_list_element *c, char *args)
255 struct command_line *cmdlines;
256 struct cleanup *old_chain;
257 enum command_control_type ret;
258 static int user_call_depth = 0;
259 extern int max_user_call_depth;
261 old_chain = setup_user_args (args);
263 cmdlines = c->user_commands;
268 if (++user_call_depth > max_user_call_depth)
269 error ("Max user call depth exceeded -- command aborted\n");
271 old_chain = make_cleanup (do_restore_user_call_depth, &user_call_depth);
273 /* Set the instream to 0, indicating execution of a
274 user-defined function. */
275 old_chain = make_cleanup (do_restore_instream_cleanup, instream);
276 instream = (FILE *) 0;
279 ret = execute_control_command (cmdlines);
280 if (ret != simple_control && ret != break_control)
282 warning ("Error in control structure.\n");
285 cmdlines = cmdlines->next;
287 do_cleanups (old_chain);
292 enum command_control_type
293 execute_control_command (struct command_line *cmd)
295 struct expression *expr;
296 struct command_line *current;
297 struct cleanup *old_chain = 0;
299 struct value *val_mark;
301 enum command_control_type ret;
304 switch (cmd->control_type)
307 /* A simple command, execute it and return. */
308 new_line = insert_args (cmd->line);
310 return invalid_control;
311 old_chain = make_cleanup (free_current_contents, &new_line);
312 execute_command (new_line, 0);
313 ret = cmd->control_type;
316 case continue_control:
318 /* Return for "continue", and "break" so we can either
319 continue the loop at the top, or break out. */
320 ret = cmd->control_type;
325 /* Parse the loop control expression for the while statement. */
326 new_line = insert_args (cmd->line);
328 return invalid_control;
329 old_chain = make_cleanup (free_current_contents, &new_line);
330 expr = parse_expression (new_line);
331 make_cleanup (free_current_contents, &expr);
333 ret = simple_control;
336 /* Keep iterating so long as the expression is true. */
343 /* Evaluate the expression. */
344 val_mark = value_mark ();
345 val = evaluate_expression (expr);
346 cond_result = value_true (val);
347 value_free_to_mark (val_mark);
349 /* If the value is false, then break out of the loop. */
353 /* Execute the body of the while statement. */
354 current = *cmd->body_list;
357 ret = execute_control_command (current);
359 /* If we got an error, or a "break" command, then stop
361 if (ret == invalid_control || ret == break_control)
367 /* If we got a "continue" command, then restart the loop
369 if (ret == continue_control)
372 /* Get the next statement. */
373 current = current->next;
377 /* Reset RET so that we don't recurse the break all the way down. */
378 if (ret == break_control)
379 ret = simple_control;
386 new_line = insert_args (cmd->line);
388 return invalid_control;
389 old_chain = make_cleanup (free_current_contents, &new_line);
390 /* Parse the conditional for the if statement. */
391 expr = parse_expression (new_line);
392 make_cleanup (free_current_contents, &expr);
395 ret = simple_control;
397 /* Evaluate the conditional. */
398 val_mark = value_mark ();
399 val = evaluate_expression (expr);
401 /* Choose which arm to take commands from based on the value of the
402 conditional expression. */
403 if (value_true (val))
404 current = *cmd->body_list;
405 else if (cmd->body_count == 2)
406 current = *(cmd->body_list + 1);
407 value_free_to_mark (val_mark);
409 /* Execute commands in the given arm. */
412 ret = execute_control_command (current);
414 /* If we got an error, get out. */
415 if (ret != simple_control)
418 /* Get the next statement in the body. */
419 current = current->next;
426 warning ("Invalid control type in command structure.");
427 return invalid_control;
431 do_cleanups (old_chain);
436 /* "while" command support. Executes a body of statements while the
437 loop condition is nonzero. */
440 while_command (char *arg, int from_tty)
442 struct command_line *command = NULL;
445 command = get_command_line (while_control, arg);
450 execute_control_command (command);
451 free_command_lines (&command);
454 /* "if" command support. Execute either the true or false arm depending
455 on the value of the if conditional. */
458 if_command (char *arg, int from_tty)
460 struct command_line *command = NULL;
463 command = get_command_line (if_control, arg);
468 execute_control_command (command);
469 free_command_lines (&command);
474 arg_cleanup (void *ignore)
476 struct user_args *oargs = user_args;
478 internal_error (__FILE__, __LINE__,
479 "arg_cleanup called with no user args.\n");
481 user_args = user_args->next;
485 /* Bind the incomming arguments for a user defined command to
486 $arg0, $arg1 ... $argMAXUSERARGS. */
488 static struct cleanup *
489 setup_user_args (char *p)
491 struct user_args *args;
492 struct cleanup *old_chain;
493 unsigned int arg_count = 0;
495 args = (struct user_args *) xmalloc (sizeof (struct user_args));
496 memset (args, 0, sizeof (struct user_args));
498 args->next = user_args;
501 old_chain = make_cleanup (arg_cleanup, 0/*ignored*/);
513 if (arg_count >= MAXUSERARGS)
515 error ("user defined function may only have %d arguments.\n",
520 /* Strip whitespace. */
521 while (*p == ' ' || *p == '\t')
524 /* P now points to an argument. */
526 user_args->a[arg_count].arg = p;
528 /* Get to the end of this argument. */
531 if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
560 user_args->a[arg_count].len = p - start_arg;
567 /* Given character string P, return a point to the first argument ($arg),
568 or NULL if P contains no arguments. */
573 while ((p = strchr (p, '$')))
575 if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
582 /* Insert the user defined arguments stored in user_arg into the $arg
583 arguments found in line, with the updated copy being placed into nline. */
586 insert_args (char *line)
588 char *p, *save_line, *new_line;
591 /* First we need to know how much memory to allocate for the new line. */
594 while ((p = locate_arg (line)))
599 if (i >= user_args->count)
601 error ("Missing argument %d in user function.\n", i);
604 len += user_args->a[i].len;
608 /* Don't forget the tail. */
609 len += strlen (line);
611 /* Allocate space for the new line and fill it in. */
612 new_line = (char *) xmalloc (len + 1);
613 if (new_line == NULL)
616 /* Restore pointer to beginning of old line. */
619 /* Save pointer to beginning of new line. */
620 save_line = new_line;
622 while ((p = locate_arg (line)))
626 memcpy (new_line, line, p - line);
627 new_line += p - line;
630 len = user_args->a[i].len;
633 memcpy (new_line, user_args->a[i].arg, len);
638 /* Don't forget the tail. */
639 strcpy (new_line, line);
641 /* Return a pointer to the beginning of the new line. */
646 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
647 code bodies. This is typically used when we encounter an "else"
648 clause for an "if" command. */
651 realloc_body_list (struct command_line *command, int new_length)
654 struct command_line **body_list;
656 n = command->body_count;
662 body_list = (struct command_line **)
663 xmalloc (sizeof (struct command_line *) * new_length);
665 memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
667 xfree (command->body_list);
668 command->body_list = body_list;
669 command->body_count = new_length;
672 /* Read one line from the input stream. If the command is an "else" or
673 "end", return such an indication to the caller. */
675 static enum misc_command_type
676 read_next_line (struct command_line **command)
678 char *p, *p1, *prompt_ptr, control_prompt[256];
681 if (control_level >= 254)
682 error ("Control nesting too deep!\n");
684 /* Set a prompt based on the nesting of the control commands. */
685 if (instream == stdin || (instream == 0 && readline_hook != NULL))
687 for (i = 0; i < control_level; i++)
688 control_prompt[i] = ' ';
689 control_prompt[i] = '>';
690 control_prompt[i + 1] = '\0';
691 prompt_ptr = (char *) &control_prompt[0];
696 p = command_line_input (prompt_ptr, instream == stdin, "commands");
698 /* Not sure what to do here. */
702 /* Strip leading and trailing whitespace. */
703 while (*p == ' ' || *p == '\t')
707 while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
710 /* Blanks and comments don't really do anything, but we need to
711 distinguish them from else, end and other commands which can be
713 if (p1 == p || p[0] == '#')
716 /* Is this the end of a simple, while, or if control structure? */
717 if (p1 - p == 3 && !strncmp (p, "end", 3))
720 /* Is the else clause of an if control structure? */
721 if (p1 - p == 4 && !strncmp (p, "else", 4))
724 /* Check for while, if, break, continue, etc and build a new command
725 line structure for them. */
726 if (p1 - p > 5 && !strncmp (p, "while", 5))
727 *command = build_command_line (while_control, p + 6);
728 else if (p1 - p > 2 && !strncmp (p, "if", 2))
729 *command = build_command_line (if_control, p + 3);
730 else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
732 *command = (struct command_line *)
733 xmalloc (sizeof (struct command_line));
734 (*command)->next = NULL;
735 (*command)->line = NULL;
736 (*command)->control_type = break_control;
737 (*command)->body_count = 0;
738 (*command)->body_list = NULL;
740 else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
742 *command = (struct command_line *)
743 xmalloc (sizeof (struct command_line));
744 (*command)->next = NULL;
745 (*command)->line = NULL;
746 (*command)->control_type = continue_control;
747 (*command)->body_count = 0;
748 (*command)->body_list = NULL;
752 /* A normal command. */
753 *command = (struct command_line *)
754 xmalloc (sizeof (struct command_line));
755 (*command)->next = NULL;
756 (*command)->line = savestring (p, p1 - p);
757 (*command)->control_type = simple_control;
758 (*command)->body_count = 0;
759 (*command)->body_list = NULL;
762 /* Nothing special. */
766 /* Recursively read in the control structures and create a command_line
769 The parent_control parameter is the control structure in which the
770 following commands are nested. */
772 static enum command_control_type
773 recurse_read_control_structure (struct command_line *current_cmd)
776 enum misc_command_type val;
777 enum command_control_type ret;
778 struct command_line **body_ptr, *child_tail, *next;
784 if (current_cmd->control_type == simple_control)
786 error ("Recursed on a simple control type\n");
787 return invalid_control;
790 if (current_body > current_cmd->body_count)
792 error ("Allocated body is smaller than this command type needs\n");
793 return invalid_control;
796 /* Read lines from the input stream and build control structures. */
802 val = read_next_line (&next);
804 /* Just skip blanks and comments. */
805 if (val == nop_command)
808 if (val == end_command)
810 if (current_cmd->control_type == while_control
811 || current_cmd->control_type == if_control)
813 /* Success reading an entire control structure. */
814 ret = simple_control;
819 ret = invalid_control;
824 /* Not the end of a control structure. */
825 if (val == else_command)
827 if (current_cmd->control_type == if_control
828 && current_body == 1)
830 realloc_body_list (current_cmd, 2);
837 ret = invalid_control;
844 child_tail->next = next;
848 body_ptr = current_cmd->body_list;
849 for (i = 1; i < current_body; i++)
858 /* If the latest line is another control structure, then recurse
860 if (next->control_type == while_control
861 || next->control_type == if_control)
864 ret = recurse_read_control_structure (next);
867 if (ret != simple_control)
877 /* Read lines from the input stream and accumulate them in a chain of
878 struct command_line's, which is then returned. For input from a
879 terminal, the special command "end" is used to mark the end of the
880 input, and is not included in the returned chain of commands. */
882 #define END_MESSAGE "End with a line saying just \"end\"."
884 struct command_line *
885 read_command_lines (char *prompt_arg, int from_tty)
887 struct command_line *head, *tail, *next;
888 struct cleanup *old_chain;
889 enum command_control_type ret;
890 enum misc_command_type val;
893 if (readline_begin_hook)
895 /* Note - intentional to merge messages with no newline */
896 (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
898 else if (from_tty && input_from_terminal_p ())
900 printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
901 gdb_flush (gdb_stdout);
909 val = read_next_line (&next);
911 /* Ignore blank lines or comments. */
912 if (val == nop_command)
915 if (val == end_command)
917 ret = simple_control;
921 if (val != ok_command)
923 ret = invalid_control;
927 if (next->control_type == while_control
928 || next->control_type == if_control)
931 ret = recurse_read_control_structure (next);
934 if (ret == invalid_control)
945 old_chain = make_cleanup_free_command_lines (&head);
954 if (ret != invalid_control)
956 discard_cleanups (old_chain);
959 do_cleanups (old_chain);
962 if (readline_end_hook)
964 (*readline_end_hook) ();
969 /* Free a chain of struct command_line's. */
972 free_command_lines (struct command_line **lptr)
974 struct command_line *l = *lptr;
975 struct command_line *next;
976 struct command_line **blist;
981 if (l->body_count > 0)
983 blist = l->body_list;
984 for (i = 0; i < l->body_count; i++, blist++)
985 free_command_lines (blist);
996 do_free_command_lines_cleanup (void *arg)
998 free_command_lines (arg);
1002 make_cleanup_free_command_lines (struct command_line **arg)
1004 return make_cleanup (do_free_command_lines_cleanup, arg);
1007 struct command_line *
1008 copy_command_lines (struct command_line *cmds)
1010 struct command_line *result = NULL;
1014 result = (struct command_line *) xmalloc (sizeof (struct command_line));
1016 result->next = copy_command_lines (cmds->next);
1017 result->line = xstrdup (cmds->line);
1018 result->control_type = cmds->control_type;
1019 result->body_count = cmds->body_count;
1020 if (cmds->body_count > 0)
1024 result->body_list = (struct command_line **)
1025 xmalloc (sizeof (struct command_line *) * cmds->body_count);
1027 for (i = 0; i < cmds->body_count; i++)
1028 result->body_list[i] = copy_command_lines (cmds->body_list[i]);
1031 result->body_list = NULL;
1038 validate_comname (char *comname)
1043 error_no_arg ("name of command to define");
1048 if (!isalnum (*p) && *p != '-' && *p != '_')
1049 error ("Junk in argument list: \"%s\"", p);
1054 /* This is just a placeholder in the command data structures. */
1056 user_defined_command (char *ignore, int from_tty)
1061 define_command (char *comname, int from_tty)
1063 #define MAX_TMPBUF 128
1070 struct command_line *cmds;
1071 struct cmd_list_element *c, *newc, *oldc, *hookc = 0;
1072 char *tem = comname;
1074 char tmpbuf[MAX_TMPBUF];
1075 int hook_type = CMD_NO_HOOK;
1076 int hook_name_size = 0;
1078 #define HOOK_STRING "hook-"
1080 #define HOOK_POST_STRING "hookpost-"
1081 #define HOOK_POST_LEN 9
1083 validate_comname (comname);
1085 /* Look it up, and verify that we got an exact match. */
1086 c = lookup_cmd (&tem, cmdlist, "", -1, 1);
1087 if (c && strcmp (comname, c->name) != 0)
1093 if (c->class == class_user || c->class == class_alias)
1094 q = query ("Redefine command \"%s\"? ", c->name);
1096 q = query ("Really redefine built-in command \"%s\"? ", c->name);
1098 error ("Command \"%s\" not redefined.", c->name);
1101 /* If this new command is a hook, then mark the command which it
1102 is hooking. Note that we allow hooking `help' commands, so that
1103 we can hook the `stop' pseudo-command. */
1105 if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
1107 hook_type = CMD_PRE_HOOK;
1108 hook_name_size = HOOK_LEN;
1110 else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN))
1112 hook_type = CMD_POST_HOOK;
1113 hook_name_size = HOOK_POST_LEN;
1116 if (hook_type != CMD_NO_HOOK)
1118 /* Look up cmd it hooks, and verify that we got an exact match. */
1119 tem = comname + hook_name_size;
1120 hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
1121 if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0)
1125 warning ("Your new `%s' command does not hook any existing command.",
1127 if (!query ("Proceed? "))
1128 error ("Not confirmed.");
1132 comname = savestring (comname, strlen (comname));
1134 /* If the rest of the commands will be case insensitive, this one
1135 should behave in the same manner. */
1136 for (tem = comname; *tem; tem++)
1138 *tem = tolower (*tem);
1140 sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
1141 cmds = read_command_lines (tmpbuf, from_tty);
1143 if (c && c->class == class_user)
1144 free_command_lines (&c->user_commands);
1146 newc = add_cmd (comname, class_user, user_defined_command,
1147 (c && c->class == class_user)
1148 ? c->doc : savestring ("User-defined.", 13), &cmdlist);
1149 newc->user_commands = cmds;
1151 /* If this new command is a hook, then mark both commands as being
1158 hookc->hook_pre = newc; /* Target gets hooked. */
1159 newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
1162 hookc->hook_post = newc; /* Target gets hooked. */
1163 newc->hookee_post = hookc; /* We are marked as hooking target cmd. */
1166 /* Should never come here as hookc would be 0. */
1167 internal_error (__FILE__, __LINE__, "bad switch");
1173 document_command (char *comname, int from_tty)
1175 struct command_line *doclines;
1176 struct cmd_list_element *c;
1177 char *tem = comname;
1180 validate_comname (comname);
1182 c = lookup_cmd (&tem, cmdlist, "", 0, 1);
1184 if (c->class != class_user)
1185 error ("Command \"%s\" is built-in.", comname);
1187 sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
1188 doclines = read_command_lines (tmpbuf, from_tty);
1194 struct command_line *cl1;
1197 for (cl1 = doclines; cl1; cl1 = cl1->next)
1198 len += strlen (cl1->line) + 1;
1200 c->doc = (char *) xmalloc (len + 1);
1203 for (cl1 = doclines; cl1; cl1 = cl1->next)
1205 strcat (c->doc, cl1->line);
1207 strcat (c->doc, "\n");
1211 free_command_lines (&doclines);
1214 struct source_cleanup_lines_args
1218 char *old_pre_error;
1219 char *old_error_pre_print;
1223 source_cleanup_lines (void *args)
1225 struct source_cleanup_lines_args *p =
1226 (struct source_cleanup_lines_args *) args;
1227 source_line_number = p->old_line;
1228 source_file_name = p->old_file;
1229 source_pre_error = p->old_pre_error;
1230 error_pre_print = p->old_error_pre_print;
1234 do_fclose_cleanup (void *stream)
1239 /* Used to implement source_command */
1242 script_from_file (FILE *stream, char *file)
1244 struct cleanup *old_cleanups;
1245 struct source_cleanup_lines_args old_lines;
1250 internal_error (__FILE__, __LINE__, "called with NULL file pointer!");
1253 old_cleanups = make_cleanup (do_fclose_cleanup, stream);
1255 old_lines.old_line = source_line_number;
1256 old_lines.old_file = source_file_name;
1257 old_lines.old_pre_error = source_pre_error;
1258 old_lines.old_error_pre_print = error_pre_print;
1259 make_cleanup (source_cleanup_lines, &old_lines);
1260 source_line_number = 0;
1261 source_file_name = file;
1262 source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
1263 source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
1264 make_cleanup (xfree, source_pre_error);
1265 /* This will get set every time we read a line. So it won't stay "" for
1267 error_pre_print = "";
1269 needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
1270 if (source_error_allocated < needed_length)
1272 source_error_allocated *= 2;
1273 if (source_error_allocated < needed_length)
1274 source_error_allocated = needed_length;
1275 if (source_error == NULL)
1276 source_error = xmalloc (source_error_allocated);
1278 source_error = xrealloc (source_error, source_error_allocated);
1281 read_command_file (stream);
1283 do_cleanups (old_cleanups);
1287 show_user_1 (struct cmd_list_element *c, struct ui_file *stream)
1289 struct command_line *cmdlines;
1291 cmdlines = c->user_commands;
1294 fputs_filtered ("User command ", stream);
1295 fputs_filtered (c->name, stream);
1296 fputs_filtered (":\n", stream);
1298 print_command_lines (uiout, cmdlines, 1);
1299 fputs_filtered ("\n", stream);