1 /* GDB CLI command scripting.
3 Copyright (c) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994,
4 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2006
5 Free Software Foundation, Inc.
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., 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
26 #include "language.h" /* For value_true */
30 #include "gdb_string.h"
31 #include "exceptions.h"
33 #include "cli/cli-cmds.h"
34 #include "cli/cli-decode.h"
35 #include "cli/cli-script.h"
36 #include "gdb_assert.h"
38 /* Prototypes for local functions */
40 static enum command_control_type
41 recurse_read_control_structure (struct command_line *current_cmd);
43 static char *insert_args (char *line);
45 static struct cleanup * setup_user_args (char *p);
47 static void validate_comname (char *);
49 /* Level of control structure. */
50 static int control_level;
52 /* Structure for arguments to user defined functions. */
53 #define MAXUSERARGS 10
56 struct user_args *next;
68 /* Allocate, initialize a new command line structure for one of the
69 control commands (if/while). */
71 static struct command_line *
72 build_command_line (enum command_control_type type, char *args)
74 struct command_line *cmd;
77 error (_("if/while commands require arguments."));
79 cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
81 cmd->control_type = type;
85 = (struct command_line **) xmalloc (sizeof (struct command_line *)
87 memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
88 cmd->line = savestring (args, strlen (args));
92 /* Build and return a new command structure for the control commands
93 such as "if" and "while". */
95 static struct command_line *
96 get_command_line (enum command_control_type type, char *arg)
98 struct command_line *cmd;
99 struct cleanup *old_chain = NULL;
101 /* Allocate and build a new command line structure. */
102 cmd = build_command_line (type, arg);
104 old_chain = make_cleanup_free_command_lines (&cmd);
106 /* Read in the body of this command. */
107 if (recurse_read_control_structure (cmd) == invalid_control)
109 warning (_("Error reading in control structure."));
110 do_cleanups (old_chain);
114 discard_cleanups (old_chain);
118 /* Recursively print a command (including full control structures). */
121 print_command_lines (struct ui_out *uiout, struct command_line *cmd,
124 struct command_line *list;
131 ui_out_spaces (uiout, 2 * depth);
133 /* A simple command, print it and continue. */
134 if (list->control_type == simple_control)
136 ui_out_field_string (uiout, NULL, list->line);
137 ui_out_text (uiout, "\n");
142 /* loop_continue to jump to the start of a while loop, print it
144 if (list->control_type == continue_control)
146 ui_out_field_string (uiout, NULL, "loop_continue");
147 ui_out_text (uiout, "\n");
152 /* loop_break to break out of a while loop, print it and continue. */
153 if (list->control_type == break_control)
155 ui_out_field_string (uiout, NULL, "loop_break");
156 ui_out_text (uiout, "\n");
161 /* A while command. Recursively print its subcommands and continue. */
162 if (list->control_type == while_control)
164 ui_out_field_fmt (uiout, NULL, "while %s", list->line);
165 ui_out_text (uiout, "\n");
166 print_command_lines (uiout, *list->body_list, depth + 1);
168 ui_out_spaces (uiout, 2 * depth);
169 ui_out_field_string (uiout, NULL, "end");
170 ui_out_text (uiout, "\n");
175 /* An if command. Recursively print both arms before continueing. */
176 if (list->control_type == if_control)
178 ui_out_field_fmt (uiout, NULL, "if %s", list->line);
179 ui_out_text (uiout, "\n");
181 print_command_lines (uiout, list->body_list[0], depth + 1);
183 /* Show the false arm if it exists. */
184 if (list->body_count == 2)
187 ui_out_spaces (uiout, 2 * depth);
188 ui_out_field_string (uiout, NULL, "else");
189 ui_out_text (uiout, "\n");
190 print_command_lines (uiout, list->body_list[1], depth + 1);
194 ui_out_spaces (uiout, 2 * depth);
195 ui_out_field_string (uiout, NULL, "end");
196 ui_out_text (uiout, "\n");
201 /* ignore illegal command type and try next */
206 /* Handle pre-post hooks. */
209 clear_hook_in_cleanup (void *data)
211 struct cmd_list_element *c = data;
212 c->hook_in = 0; /* Allow hook to work again once it is complete */
216 execute_cmd_pre_hook (struct cmd_list_element *c)
218 if ((c->hook_pre) && (!c->hook_in))
220 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
221 c->hook_in = 1; /* Prevent recursive hooking */
222 execute_user_command (c->hook_pre, (char *) 0);
223 do_cleanups (cleanups);
228 execute_cmd_post_hook (struct cmd_list_element *c)
230 if ((c->hook_post) && (!c->hook_in))
232 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
233 c->hook_in = 1; /* Prevent recursive hooking */
234 execute_user_command (c->hook_post, (char *) 0);
235 do_cleanups (cleanups);
239 /* Execute the command in CMD. */
241 do_restore_user_call_depth (void * call_depth)
243 int * depth = call_depth;
251 execute_user_command (struct cmd_list_element *c, char *args)
253 struct command_line *cmdlines;
254 struct cleanup *old_chain;
255 enum command_control_type ret;
256 static int user_call_depth = 0;
257 extern int max_user_call_depth;
259 old_chain = setup_user_args (args);
261 cmdlines = c->user_commands;
266 if (++user_call_depth > max_user_call_depth)
267 error (_("Max user call depth exceeded -- command aborted."));
269 make_cleanup (do_restore_user_call_depth, &user_call_depth);
271 /* Set the instream to 0, indicating execution of a
272 user-defined function. */
273 make_cleanup (do_restore_instream_cleanup, instream);
274 instream = (FILE *) 0;
276 /* Also set the global in_user_command, so that NULL instream is
277 not confused with Insight. */
282 ret = execute_control_command (cmdlines);
283 if (ret != simple_control && ret != break_control)
285 warning (_("Error in control structure."));
288 cmdlines = cmdlines->next;
290 do_cleanups (old_chain);
293 enum command_control_type
294 execute_control_command (struct command_line *cmd)
296 struct expression *expr;
297 struct command_line *current;
298 struct cleanup *old_chain = make_cleanup (null_cleanup, 0);
300 struct value *val_mark;
302 enum command_control_type ret;
305 /* Start by assuming failure, if a problem is detected, the code
306 below will simply "break" out of the switch. */
307 ret = invalid_control;
309 switch (cmd->control_type)
312 /* A simple command, execute it and return. */
313 new_line = insert_args (cmd->line);
316 make_cleanup (free_current_contents, &new_line);
317 execute_command (new_line, 0);
318 ret = cmd->control_type;
321 case continue_control:
323 /* Return for "continue", and "break" so we can either
324 continue the loop at the top, or break out. */
325 ret = cmd->control_type;
330 /* Parse the loop control expression for the while statement. */
331 new_line = insert_args (cmd->line);
334 make_cleanup (free_current_contents, &new_line);
335 expr = parse_expression (new_line);
336 make_cleanup (free_current_contents, &expr);
338 ret = simple_control;
341 /* Keep iterating so long as the expression is true. */
348 /* Evaluate the expression. */
349 val_mark = value_mark ();
350 val = evaluate_expression (expr);
351 cond_result = value_true (val);
352 value_free_to_mark (val_mark);
354 /* If the value is false, then break out of the loop. */
358 /* Execute the body of the while statement. */
359 current = *cmd->body_list;
362 ret = execute_control_command (current);
364 /* If we got an error, or a "break" command, then stop
366 if (ret == invalid_control || ret == break_control)
372 /* If we got a "continue" command, then restart the loop
374 if (ret == continue_control)
377 /* Get the next statement. */
378 current = current->next;
382 /* Reset RET so that we don't recurse the break all the way down. */
383 if (ret == break_control)
384 ret = simple_control;
391 new_line = insert_args (cmd->line);
394 make_cleanup (free_current_contents, &new_line);
395 /* Parse the conditional for the if statement. */
396 expr = parse_expression (new_line);
397 make_cleanup (free_current_contents, &expr);
400 ret = simple_control;
402 /* Evaluate the conditional. */
403 val_mark = value_mark ();
404 val = evaluate_expression (expr);
406 /* Choose which arm to take commands from based on the value of the
407 conditional expression. */
408 if (value_true (val))
409 current = *cmd->body_list;
410 else if (cmd->body_count == 2)
411 current = *(cmd->body_list + 1);
412 value_free_to_mark (val_mark);
414 /* Execute commands in the given arm. */
417 ret = execute_control_command (current);
419 /* If we got an error, get out. */
420 if (ret != simple_control)
423 /* Get the next statement in the body. */
424 current = current->next;
431 warning (_("Invalid control type in command structure."));
435 do_cleanups (old_chain);
440 /* "while" command support. Executes a body of statements while the
441 loop condition is nonzero. */
444 while_command (char *arg, int from_tty)
446 struct command_line *command = NULL;
449 command = get_command_line (while_control, arg);
454 execute_control_command (command);
455 free_command_lines (&command);
458 /* "if" command support. Execute either the true or false arm depending
459 on the value of the if conditional. */
462 if_command (char *arg, int from_tty)
464 struct command_line *command = NULL;
467 command = get_command_line (if_control, arg);
472 execute_control_command (command);
473 free_command_lines (&command);
478 arg_cleanup (void *ignore)
480 struct user_args *oargs = user_args;
482 internal_error (__FILE__, __LINE__,
483 _("arg_cleanup called with no user args.\n"));
485 user_args = user_args->next;
489 /* Bind the incomming arguments for a user defined command to
490 $arg0, $arg1 ... $argMAXUSERARGS. */
492 static struct cleanup *
493 setup_user_args (char *p)
495 struct user_args *args;
496 struct cleanup *old_chain;
497 unsigned int arg_count = 0;
499 args = (struct user_args *) xmalloc (sizeof (struct user_args));
500 memset (args, 0, sizeof (struct user_args));
502 args->next = user_args;
505 old_chain = make_cleanup (arg_cleanup, 0/*ignored*/);
517 if (arg_count >= MAXUSERARGS)
519 error (_("user defined function may only have %d arguments."),
524 /* Strip whitespace. */
525 while (*p == ' ' || *p == '\t')
528 /* P now points to an argument. */
530 user_args->a[arg_count].arg = p;
532 /* Get to the end of this argument. */
535 if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
564 user_args->a[arg_count].len = p - start_arg;
571 /* Given character string P, return a point to the first argument ($arg),
572 or NULL if P contains no arguments. */
577 while ((p = strchr (p, '$')))
579 if (strncmp (p, "$arg", 4) == 0
580 && (isdigit (p[4]) || p[4] == 'c'))
587 /* Insert the user defined arguments stored in user_arg into the $arg
588 arguments found in line, with the updated copy being placed into nline. */
591 insert_args (char *line)
593 char *p, *save_line, *new_line;
596 /* First we need to know how much memory to allocate for the new line. */
599 while ((p = locate_arg (line)))
606 /* $argc. Number will be <=10. */
607 len += user_args->count == 10 ? 2 : 1;
609 else if (i >= user_args->count)
611 error (_("Missing argument %d in user function."), i);
616 len += user_args->a[i].len;
621 /* Don't forget the tail. */
622 len += strlen (line);
624 /* Allocate space for the new line and fill it in. */
625 new_line = (char *) xmalloc (len + 1);
626 if (new_line == NULL)
629 /* Restore pointer to beginning of old line. */
632 /* Save pointer to beginning of new line. */
633 save_line = new_line;
635 while ((p = locate_arg (line)))
639 memcpy (new_line, line, p - line);
640 new_line += p - line;
644 gdb_assert (user_args->count >= 0 && user_args->count <= 10);
645 if (user_args->count == 10)
651 *(new_line++) = user_args->count + '0';
656 len = user_args->a[i].len;
659 memcpy (new_line, user_args->a[i].arg, len);
665 /* Don't forget the tail. */
666 strcpy (new_line, line);
668 /* Return a pointer to the beginning of the new line. */
673 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
674 code bodies. This is typically used when we encounter an "else"
675 clause for an "if" command. */
678 realloc_body_list (struct command_line *command, int new_length)
681 struct command_line **body_list;
683 n = command->body_count;
689 body_list = (struct command_line **)
690 xmalloc (sizeof (struct command_line *) * new_length);
692 memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
694 xfree (command->body_list);
695 command->body_list = body_list;
696 command->body_count = new_length;
699 /* Read one line from the input stream. If the command is an "else" or
700 "end", return such an indication to the caller. */
702 static enum misc_command_type
703 read_next_line (struct command_line **command)
705 char *p, *p1, *prompt_ptr, control_prompt[256];
708 if (control_level >= 254)
709 error (_("Control nesting too deep!"));
711 /* Set a prompt based on the nesting of the control commands. */
712 if (instream == stdin || (instream == 0 && deprecated_readline_hook != NULL))
714 for (i = 0; i < control_level; i++)
715 control_prompt[i] = ' ';
716 control_prompt[i] = '>';
717 control_prompt[i + 1] = '\0';
718 prompt_ptr = (char *) &control_prompt[0];
723 p = command_line_input (prompt_ptr, instream == stdin, "commands");
725 /* Not sure what to do here. */
729 /* Strip leading and trailing whitespace. */
730 while (*p == ' ' || *p == '\t')
734 while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
737 /* Blanks and comments don't really do anything, but we need to
738 distinguish them from else, end and other commands which can be
740 if (p1 == p || p[0] == '#')
743 /* Is this the end of a simple, while, or if control structure? */
744 if (p1 - p == 3 && !strncmp (p, "end", 3))
747 /* Is the else clause of an if control structure? */
748 if (p1 - p == 4 && !strncmp (p, "else", 4))
751 /* Check for while, if, break, continue, etc and build a new command
752 line structure for them. */
753 if (p1 - p > 5 && !strncmp (p, "while", 5))
757 while (first_arg < p1 && isspace (*first_arg))
759 *command = build_command_line (while_control, first_arg);
761 else if (p1 - p > 2 && !strncmp (p, "if", 2))
765 while (first_arg < p1 && isspace (*first_arg))
767 *command = build_command_line (if_control, first_arg);
769 else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
771 *command = (struct command_line *)
772 xmalloc (sizeof (struct command_line));
773 (*command)->next = NULL;
774 (*command)->line = NULL;
775 (*command)->control_type = break_control;
776 (*command)->body_count = 0;
777 (*command)->body_list = NULL;
779 else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
781 *command = (struct command_line *)
782 xmalloc (sizeof (struct command_line));
783 (*command)->next = NULL;
784 (*command)->line = NULL;
785 (*command)->control_type = continue_control;
786 (*command)->body_count = 0;
787 (*command)->body_list = NULL;
791 /* A normal command. */
792 *command = (struct command_line *)
793 xmalloc (sizeof (struct command_line));
794 (*command)->next = NULL;
795 (*command)->line = savestring (p, p1 - p);
796 (*command)->control_type = simple_control;
797 (*command)->body_count = 0;
798 (*command)->body_list = NULL;
801 /* Nothing special. */
805 /* Recursively read in the control structures and create a command_line
808 The parent_control parameter is the control structure in which the
809 following commands are nested. */
811 static enum command_control_type
812 recurse_read_control_structure (struct command_line *current_cmd)
815 enum misc_command_type val;
816 enum command_control_type ret;
817 struct command_line **body_ptr, *child_tail, *next;
823 if (current_cmd->control_type == simple_control)
824 error (_("Recursed on a simple control type."));
826 if (current_body > current_cmd->body_count)
827 error (_("Allocated body is smaller than this command type needs."));
829 /* Read lines from the input stream and build control structures. */
835 val = read_next_line (&next);
837 /* Just skip blanks and comments. */
838 if (val == nop_command)
841 if (val == end_command)
843 if (current_cmd->control_type == while_control
844 || current_cmd->control_type == if_control)
846 /* Success reading an entire control structure. */
847 ret = simple_control;
852 ret = invalid_control;
857 /* Not the end of a control structure. */
858 if (val == else_command)
860 if (current_cmd->control_type == if_control
861 && current_body == 1)
863 realloc_body_list (current_cmd, 2);
870 ret = invalid_control;
877 child_tail->next = next;
881 body_ptr = current_cmd->body_list;
882 for (i = 1; i < current_body; i++)
891 /* If the latest line is another control structure, then recurse
893 if (next->control_type == while_control
894 || next->control_type == if_control)
897 ret = recurse_read_control_structure (next);
900 if (ret != simple_control)
910 /* Read lines from the input stream and accumulate them in a chain of
911 struct command_line's, which is then returned. For input from a
912 terminal, the special command "end" is used to mark the end of the
913 input, and is not included in the returned chain of commands. */
915 #define END_MESSAGE "End with a line saying just \"end\"."
917 struct command_line *
918 read_command_lines (char *prompt_arg, int from_tty)
920 struct command_line *head, *tail, *next;
921 struct cleanup *old_chain;
922 enum command_control_type ret;
923 enum misc_command_type val;
927 if (from_tty && input_from_terminal_p ())
929 if (deprecated_readline_begin_hook)
931 /* Note - intentional to merge messages with no newline */
932 (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
936 printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
937 gdb_flush (gdb_stdout);
946 val = read_next_line (&next);
948 /* Ignore blank lines or comments. */
949 if (val == nop_command)
952 if (val == end_command)
954 ret = simple_control;
958 if (val != ok_command)
960 ret = invalid_control;
964 if (next->control_type == while_control
965 || next->control_type == if_control)
968 ret = recurse_read_control_structure (next);
971 if (ret == invalid_control)
982 old_chain = make_cleanup_free_command_lines (&head);
991 if (ret != invalid_control)
993 discard_cleanups (old_chain);
996 do_cleanups (old_chain);
999 if (deprecated_readline_end_hook && from_tty && input_from_terminal_p ())
1001 (*deprecated_readline_end_hook) ();
1006 /* Free a chain of struct command_line's. */
1009 free_command_lines (struct command_line **lptr)
1011 struct command_line *l = *lptr;
1012 struct command_line *next;
1013 struct command_line **blist;
1018 if (l->body_count > 0)
1020 blist = l->body_list;
1021 for (i = 0; i < l->body_count; i++, blist++)
1022 free_command_lines (blist);
1033 do_free_command_lines_cleanup (void *arg)
1035 free_command_lines (arg);
1039 make_cleanup_free_command_lines (struct command_line **arg)
1041 return make_cleanup (do_free_command_lines_cleanup, arg);
1044 struct command_line *
1045 copy_command_lines (struct command_line *cmds)
1047 struct command_line *result = NULL;
1051 result = (struct command_line *) xmalloc (sizeof (struct command_line));
1053 result->next = copy_command_lines (cmds->next);
1054 result->line = xstrdup (cmds->line);
1055 result->control_type = cmds->control_type;
1056 result->body_count = cmds->body_count;
1057 if (cmds->body_count > 0)
1061 result->body_list = (struct command_line **)
1062 xmalloc (sizeof (struct command_line *) * cmds->body_count);
1064 for (i = 0; i < cmds->body_count; i++)
1065 result->body_list[i] = copy_command_lines (cmds->body_list[i]);
1068 result->body_list = NULL;
1075 validate_comname (char *comname)
1080 error_no_arg (_("name of command to define"));
1085 if (!isalnum (*p) && *p != '-' && *p != '_')
1086 error (_("Junk in argument list: \"%s\""), p);
1091 /* This is just a placeholder in the command data structures. */
1093 user_defined_command (char *ignore, int from_tty)
1098 define_command (char *comname, int from_tty)
1100 #define MAX_TMPBUF 128
1107 struct command_line *cmds;
1108 struct cmd_list_element *c, *newc, *oldc, *hookc = 0;
1109 char *tem = comname;
1111 char tmpbuf[MAX_TMPBUF];
1112 int hook_type = CMD_NO_HOOK;
1113 int hook_name_size = 0;
1115 #define HOOK_STRING "hook-"
1117 #define HOOK_POST_STRING "hookpost-"
1118 #define HOOK_POST_LEN 9
1120 validate_comname (comname);
1122 /* Look it up, and verify that we got an exact match. */
1123 c = lookup_cmd (&tem, cmdlist, "", -1, 1);
1124 if (c && strcmp (comname, c->name) != 0)
1130 if (c->class == class_user || c->class == class_alias)
1131 q = query (_("Redefine command \"%s\"? "), c->name);
1133 q = query (_("Really redefine built-in command \"%s\"? "), c->name);
1135 error (_("Command \"%s\" not redefined."), c->name);
1138 /* If this new command is a hook, then mark the command which it
1139 is hooking. Note that we allow hooking `help' commands, so that
1140 we can hook the `stop' pseudo-command. */
1142 if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
1144 hook_type = CMD_PRE_HOOK;
1145 hook_name_size = HOOK_LEN;
1147 else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN))
1149 hook_type = CMD_POST_HOOK;
1150 hook_name_size = HOOK_POST_LEN;
1153 if (hook_type != CMD_NO_HOOK)
1155 /* Look up cmd it hooks, and verify that we got an exact match. */
1156 tem = comname + hook_name_size;
1157 hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
1158 if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0)
1162 warning (_("Your new `%s' command does not hook any existing command."),
1164 if (!query ("Proceed? "))
1165 error (_("Not confirmed."));
1169 comname = savestring (comname, strlen (comname));
1171 /* If the rest of the commands will be case insensitive, this one
1172 should behave in the same manner. */
1173 for (tem = comname; *tem; tem++)
1175 *tem = tolower (*tem);
1177 sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
1178 cmds = read_command_lines (tmpbuf, from_tty);
1180 if (c && c->class == class_user)
1181 free_command_lines (&c->user_commands);
1183 newc = add_cmd (comname, class_user, user_defined_command,
1184 (c && c->class == class_user)
1185 ? c->doc : savestring ("User-defined.", 13), &cmdlist);
1186 newc->user_commands = cmds;
1188 /* If this new command is a hook, then mark both commands as being
1195 hookc->hook_pre = newc; /* Target gets hooked. */
1196 newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
1199 hookc->hook_post = newc; /* Target gets hooked. */
1200 newc->hookee_post = hookc; /* We are marked as hooking target cmd. */
1203 /* Should never come here as hookc would be 0. */
1204 internal_error (__FILE__, __LINE__, _("bad switch"));
1210 document_command (char *comname, int from_tty)
1212 struct command_line *doclines;
1213 struct cmd_list_element *c;
1214 char *tem = comname;
1217 validate_comname (comname);
1219 c = lookup_cmd (&tem, cmdlist, "", 0, 1);
1221 if (c->class != class_user)
1222 error (_("Command \"%s\" is built-in."), comname);
1224 sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
1225 doclines = read_command_lines (tmpbuf, from_tty);
1231 struct command_line *cl1;
1234 for (cl1 = doclines; cl1; cl1 = cl1->next)
1235 len += strlen (cl1->line) + 1;
1237 c->doc = (char *) xmalloc (len + 1);
1240 for (cl1 = doclines; cl1; cl1 = cl1->next)
1242 strcat (c->doc, cl1->line);
1244 strcat (c->doc, "\n");
1248 free_command_lines (&doclines);
1251 struct source_cleanup_lines_args
1258 source_cleanup_lines (void *args)
1260 struct source_cleanup_lines_args *p =
1261 (struct source_cleanup_lines_args *) args;
1262 source_line_number = p->old_line;
1263 source_file_name = p->old_file;
1267 do_fclose_cleanup (void *stream)
1272 struct wrapped_read_command_file_args
1278 wrapped_read_command_file (struct ui_out *uiout, void *data)
1280 struct wrapped_read_command_file_args *args = data;
1281 read_command_file (args->stream);
1284 /* Used to implement source_command */
1287 script_from_file (FILE *stream, char *file)
1289 struct cleanup *old_cleanups;
1290 struct source_cleanup_lines_args old_lines;
1294 internal_error (__FILE__, __LINE__, _("called with NULL file pointer!"));
1296 old_cleanups = make_cleanup (do_fclose_cleanup, stream);
1298 old_lines.old_line = source_line_number;
1299 old_lines.old_file = source_file_name;
1300 make_cleanup (source_cleanup_lines, &old_lines);
1301 source_line_number = 0;
1302 source_file_name = file;
1303 /* This will get set every time we read a line. So it won't stay "" for
1305 error_pre_print = "";
1308 struct gdb_exception e;
1309 struct wrapped_read_command_file_args args;
1310 args.stream = stream;
1311 e = catch_exception (uiout, wrapped_read_command_file, &args,
1318 /* Re-throw the error, but with the file name information
1320 throw_error (e.error,
1321 _("%s:%d: Error in sourced command file:\n%s"),
1322 source_file_name, source_line_number, e.message);
1324 internal_error (__FILE__, __LINE__, _("bad reason"));
1328 do_cleanups (old_cleanups);
1332 show_user_1 (struct cmd_list_element *c, struct ui_file *stream)
1334 struct command_line *cmdlines;
1336 cmdlines = c->user_commands;
1339 fputs_filtered ("User command ", stream);
1340 fputs_filtered (c->name, stream);
1341 fputs_filtered (":\n", stream);
1343 print_command_lines (uiout, cmdlines, 1);
1344 fputs_filtered ("\n", stream);