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;
57 /* It is necessary to store a malloced copy of the command line to
58 ensure that the arguments are not overwritten before they are used. */
71 /* Allocate, initialize a new command line structure for one of the
72 control commands (if/while). */
74 static struct command_line *
75 build_command_line (enum command_control_type type, char *args)
77 struct command_line *cmd;
80 error (_("if/while commands require arguments."));
82 cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
84 cmd->control_type = type;
88 = (struct command_line **) xmalloc (sizeof (struct command_line *)
90 memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
91 cmd->line = savestring (args, strlen (args));
95 /* Build and return a new command structure for the control commands
96 such as "if" and "while". */
98 static struct command_line *
99 get_command_line (enum command_control_type type, char *arg)
101 struct command_line *cmd;
102 struct cleanup *old_chain = NULL;
104 /* Allocate and build a new command line structure. */
105 cmd = build_command_line (type, arg);
107 old_chain = make_cleanup_free_command_lines (&cmd);
109 /* Read in the body of this command. */
110 if (recurse_read_control_structure (cmd) == invalid_control)
112 warning (_("Error reading in control structure."));
113 do_cleanups (old_chain);
117 discard_cleanups (old_chain);
121 /* Recursively print a command (including full control structures). */
124 print_command_lines (struct ui_out *uiout, struct command_line *cmd,
127 struct command_line *list;
134 ui_out_spaces (uiout, 2 * depth);
136 /* A simple command, print it and continue. */
137 if (list->control_type == simple_control)
139 ui_out_field_string (uiout, NULL, list->line);
140 ui_out_text (uiout, "\n");
145 /* loop_continue to jump to the start of a while loop, print it
147 if (list->control_type == continue_control)
149 ui_out_field_string (uiout, NULL, "loop_continue");
150 ui_out_text (uiout, "\n");
155 /* loop_break to break out of a while loop, print it and continue. */
156 if (list->control_type == break_control)
158 ui_out_field_string (uiout, NULL, "loop_break");
159 ui_out_text (uiout, "\n");
164 /* A while command. Recursively print its subcommands and continue. */
165 if (list->control_type == while_control)
167 ui_out_field_fmt (uiout, NULL, "while %s", list->line);
168 ui_out_text (uiout, "\n");
169 print_command_lines (uiout, *list->body_list, depth + 1);
171 ui_out_spaces (uiout, 2 * depth);
172 ui_out_field_string (uiout, NULL, "end");
173 ui_out_text (uiout, "\n");
178 /* An if command. Recursively print both arms before continueing. */
179 if (list->control_type == if_control)
181 ui_out_field_fmt (uiout, NULL, "if %s", list->line);
182 ui_out_text (uiout, "\n");
184 print_command_lines (uiout, list->body_list[0], depth + 1);
186 /* Show the false arm if it exists. */
187 if (list->body_count == 2)
190 ui_out_spaces (uiout, 2 * depth);
191 ui_out_field_string (uiout, NULL, "else");
192 ui_out_text (uiout, "\n");
193 print_command_lines (uiout, list->body_list[1], depth + 1);
197 ui_out_spaces (uiout, 2 * depth);
198 ui_out_field_string (uiout, NULL, "end");
199 ui_out_text (uiout, "\n");
204 /* ignore illegal command type and try next */
209 /* Handle pre-post hooks. */
212 clear_hook_in_cleanup (void *data)
214 struct cmd_list_element *c = data;
215 c->hook_in = 0; /* Allow hook to work again once it is complete */
219 execute_cmd_pre_hook (struct cmd_list_element *c)
221 if ((c->hook_pre) && (!c->hook_in))
223 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
224 c->hook_in = 1; /* Prevent recursive hooking */
225 execute_user_command (c->hook_pre, (char *) 0);
226 do_cleanups (cleanups);
231 execute_cmd_post_hook (struct cmd_list_element *c)
233 if ((c->hook_post) && (!c->hook_in))
235 struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c);
236 c->hook_in = 1; /* Prevent recursive hooking */
237 execute_user_command (c->hook_post, (char *) 0);
238 do_cleanups (cleanups);
242 /* Execute the command in CMD. */
244 do_restore_user_call_depth (void * call_depth)
246 int * depth = call_depth;
254 execute_user_command (struct cmd_list_element *c, char *args)
256 struct command_line *cmdlines;
257 struct cleanup *old_chain;
258 enum command_control_type ret;
259 static int user_call_depth = 0;
260 extern int max_user_call_depth;
262 old_chain = setup_user_args (args);
264 cmdlines = c->user_commands;
269 if (++user_call_depth > max_user_call_depth)
270 error (_("Max user call depth exceeded -- command aborted."));
272 make_cleanup (do_restore_user_call_depth, &user_call_depth);
274 /* Set the instream to 0, indicating execution of a
275 user-defined function. */
276 make_cleanup (do_restore_instream_cleanup, instream);
277 instream = (FILE *) 0;
279 /* Also set the global in_user_command, so that NULL instream is
280 not confused with Insight. */
285 ret = execute_control_command (cmdlines);
286 if (ret != simple_control && ret != break_control)
288 warning (_("Error in control structure."));
291 cmdlines = cmdlines->next;
293 do_cleanups (old_chain);
296 enum command_control_type
297 execute_control_command (struct command_line *cmd)
299 struct expression *expr;
300 struct command_line *current;
301 struct cleanup *old_chain = make_cleanup (null_cleanup, 0);
303 struct value *val_mark;
305 enum command_control_type ret;
308 /* Start by assuming failure, if a problem is detected, the code
309 below will simply "break" out of the switch. */
310 ret = invalid_control;
312 switch (cmd->control_type)
315 /* A simple command, execute it and return. */
316 new_line = insert_args (cmd->line);
319 make_cleanup (free_current_contents, &new_line);
320 execute_command (new_line, 0);
321 ret = cmd->control_type;
324 case continue_control:
326 /* Return for "continue", and "break" so we can either
327 continue the loop at the top, or break out. */
328 ret = cmd->control_type;
333 /* Parse the loop control expression for the while statement. */
334 new_line = insert_args (cmd->line);
337 make_cleanup (free_current_contents, &new_line);
338 expr = parse_expression (new_line);
339 make_cleanup (free_current_contents, &expr);
341 ret = simple_control;
344 /* Keep iterating so long as the expression is true. */
351 /* Evaluate the expression. */
352 val_mark = value_mark ();
353 val = evaluate_expression (expr);
354 cond_result = value_true (val);
355 value_free_to_mark (val_mark);
357 /* If the value is false, then break out of the loop. */
361 /* Execute the body of the while statement. */
362 current = *cmd->body_list;
365 ret = execute_control_command (current);
367 /* If we got an error, or a "break" command, then stop
369 if (ret == invalid_control || ret == break_control)
375 /* If we got a "continue" command, then restart the loop
377 if (ret == continue_control)
380 /* Get the next statement. */
381 current = current->next;
385 /* Reset RET so that we don't recurse the break all the way down. */
386 if (ret == break_control)
387 ret = simple_control;
394 new_line = insert_args (cmd->line);
397 make_cleanup (free_current_contents, &new_line);
398 /* Parse the conditional for the if statement. */
399 expr = parse_expression (new_line);
400 make_cleanup (free_current_contents, &expr);
403 ret = simple_control;
405 /* Evaluate the conditional. */
406 val_mark = value_mark ();
407 val = evaluate_expression (expr);
409 /* Choose which arm to take commands from based on the value of the
410 conditional expression. */
411 if (value_true (val))
412 current = *cmd->body_list;
413 else if (cmd->body_count == 2)
414 current = *(cmd->body_list + 1);
415 value_free_to_mark (val_mark);
417 /* Execute commands in the given arm. */
420 ret = execute_control_command (current);
422 /* If we got an error, get out. */
423 if (ret != simple_control)
426 /* Get the next statement in the body. */
427 current = current->next;
434 warning (_("Invalid control type in command structure."));
438 do_cleanups (old_chain);
443 /* "while" command support. Executes a body of statements while the
444 loop condition is nonzero. */
447 while_command (char *arg, int from_tty)
449 struct command_line *command = NULL;
452 command = get_command_line (while_control, arg);
457 execute_control_command (command);
458 free_command_lines (&command);
461 /* "if" command support. Execute either the true or false arm depending
462 on the value of the if conditional. */
465 if_command (char *arg, int from_tty)
467 struct command_line *command = NULL;
470 command = get_command_line (if_control, arg);
475 execute_control_command (command);
476 free_command_lines (&command);
481 arg_cleanup (void *ignore)
483 struct user_args *oargs = user_args;
485 internal_error (__FILE__, __LINE__,
486 _("arg_cleanup called with no user args.\n"));
488 user_args = user_args->next;
489 xfree (oargs->command);
493 /* Bind the incomming arguments for a user defined command to
494 $arg0, $arg1 ... $argMAXUSERARGS. */
496 static struct cleanup *
497 setup_user_args (char *p)
499 struct user_args *args;
500 struct cleanup *old_chain;
501 unsigned int arg_count = 0;
503 args = (struct user_args *) xmalloc (sizeof (struct user_args));
504 memset (args, 0, sizeof (struct user_args));
506 args->next = user_args;
509 old_chain = make_cleanup (arg_cleanup, 0/*ignored*/);
514 user_args->command = p = xstrdup (p);
523 if (arg_count >= MAXUSERARGS)
525 error (_("user defined function may only have %d arguments."),
530 /* Strip whitespace. */
531 while (*p == ' ' || *p == '\t')
534 /* P now points to an argument. */
536 user_args->a[arg_count].arg = p;
538 /* Get to the end of this argument. */
541 if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
570 user_args->a[arg_count].len = p - start_arg;
577 /* Given character string P, return a point to the first argument ($arg),
578 or NULL if P contains no arguments. */
583 while ((p = strchr (p, '$')))
585 if (strncmp (p, "$arg", 4) == 0
586 && (isdigit (p[4]) || p[4] == 'c'))
593 /* Insert the user defined arguments stored in user_arg into the $arg
594 arguments found in line, with the updated copy being placed into nline. */
597 insert_args (char *line)
599 char *p, *save_line, *new_line;
602 /* If we are not in a user-defined function, treat $argc, $arg0, et
603 cetera as normal convenience variables. */
604 if (user_args == NULL)
605 return xstrdup (line);
607 /* First we need to know how much memory to allocate for the new line. */
610 while ((p = locate_arg (line)))
617 /* $argc. Number will be <=10. */
618 len += user_args->count == 10 ? 2 : 1;
620 else if (i >= user_args->count)
622 error (_("Missing argument %d in user function."), i);
627 len += user_args->a[i].len;
632 /* Don't forget the tail. */
633 len += strlen (line);
635 /* Allocate space for the new line and fill it in. */
636 new_line = (char *) xmalloc (len + 1);
637 if (new_line == NULL)
640 /* Restore pointer to beginning of old line. */
643 /* Save pointer to beginning of new line. */
644 save_line = new_line;
646 while ((p = locate_arg (line)))
650 memcpy (new_line, line, p - line);
651 new_line += p - line;
655 gdb_assert (user_args->count >= 0 && user_args->count <= 10);
656 if (user_args->count == 10)
662 *(new_line++) = user_args->count + '0';
667 len = user_args->a[i].len;
670 memcpy (new_line, user_args->a[i].arg, len);
676 /* Don't forget the tail. */
677 strcpy (new_line, line);
679 /* Return a pointer to the beginning of the new line. */
684 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
685 code bodies. This is typically used when we encounter an "else"
686 clause for an "if" command. */
689 realloc_body_list (struct command_line *command, int new_length)
692 struct command_line **body_list;
694 n = command->body_count;
700 body_list = (struct command_line **)
701 xmalloc (sizeof (struct command_line *) * new_length);
703 memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
705 xfree (command->body_list);
706 command->body_list = body_list;
707 command->body_count = new_length;
710 /* Read one line from the input stream. If the command is an "else" or
711 "end", return such an indication to the caller. */
713 static enum misc_command_type
714 read_next_line (struct command_line **command)
716 char *p, *p1, *prompt_ptr, control_prompt[256];
719 if (control_level >= 254)
720 error (_("Control nesting too deep!"));
722 /* Set a prompt based on the nesting of the control commands. */
723 if (instream == stdin || (instream == 0 && deprecated_readline_hook != NULL))
725 for (i = 0; i < control_level; i++)
726 control_prompt[i] = ' ';
727 control_prompt[i] = '>';
728 control_prompt[i + 1] = '\0';
729 prompt_ptr = (char *) &control_prompt[0];
734 p = command_line_input (prompt_ptr, instream == stdin, "commands");
736 /* Not sure what to do here. */
740 /* Strip leading and trailing whitespace. */
741 while (*p == ' ' || *p == '\t')
745 while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
748 /* Blanks and comments don't really do anything, but we need to
749 distinguish them from else, end and other commands which can be
751 if (p1 == p || p[0] == '#')
754 /* Is this the end of a simple, while, or if control structure? */
755 if (p1 - p == 3 && !strncmp (p, "end", 3))
758 /* Is the else clause of an if control structure? */
759 if (p1 - p == 4 && !strncmp (p, "else", 4))
762 /* Check for while, if, break, continue, etc and build a new command
763 line structure for them. */
764 if (p1 - p > 5 && !strncmp (p, "while", 5))
768 while (first_arg < p1 && isspace (*first_arg))
770 *command = build_command_line (while_control, first_arg);
772 else if (p1 - p > 2 && !strncmp (p, "if", 2))
776 while (first_arg < p1 && isspace (*first_arg))
778 *command = build_command_line (if_control, first_arg);
780 else if (p1 - p == 10 && !strncmp (p, "loop_break", 10))
782 *command = (struct command_line *)
783 xmalloc (sizeof (struct command_line));
784 (*command)->next = NULL;
785 (*command)->line = NULL;
786 (*command)->control_type = break_control;
787 (*command)->body_count = 0;
788 (*command)->body_list = NULL;
790 else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13))
792 *command = (struct command_line *)
793 xmalloc (sizeof (struct command_line));
794 (*command)->next = NULL;
795 (*command)->line = NULL;
796 (*command)->control_type = continue_control;
797 (*command)->body_count = 0;
798 (*command)->body_list = NULL;
802 /* A normal command. */
803 *command = (struct command_line *)
804 xmalloc (sizeof (struct command_line));
805 (*command)->next = NULL;
806 (*command)->line = savestring (p, p1 - p);
807 (*command)->control_type = simple_control;
808 (*command)->body_count = 0;
809 (*command)->body_list = NULL;
812 /* Nothing special. */
816 /* Recursively read in the control structures and create a command_line
819 The parent_control parameter is the control structure in which the
820 following commands are nested. */
822 static enum command_control_type
823 recurse_read_control_structure (struct command_line *current_cmd)
826 enum misc_command_type val;
827 enum command_control_type ret;
828 struct command_line **body_ptr, *child_tail, *next;
834 if (current_cmd->control_type == simple_control)
835 error (_("Recursed on a simple control type."));
837 if (current_body > current_cmd->body_count)
838 error (_("Allocated body is smaller than this command type needs."));
840 /* Read lines from the input stream and build control structures. */
846 val = read_next_line (&next);
848 /* Just skip blanks and comments. */
849 if (val == nop_command)
852 if (val == end_command)
854 if (current_cmd->control_type == while_control
855 || current_cmd->control_type == if_control)
857 /* Success reading an entire control structure. */
858 ret = simple_control;
863 ret = invalid_control;
868 /* Not the end of a control structure. */
869 if (val == else_command)
871 if (current_cmd->control_type == if_control
872 && current_body == 1)
874 realloc_body_list (current_cmd, 2);
881 ret = invalid_control;
888 child_tail->next = next;
892 body_ptr = current_cmd->body_list;
893 for (i = 1; i < current_body; i++)
902 /* If the latest line is another control structure, then recurse
904 if (next->control_type == while_control
905 || next->control_type == if_control)
908 ret = recurse_read_control_structure (next);
911 if (ret != simple_control)
921 /* Read lines from the input stream and accumulate them in a chain of
922 struct command_line's, which is then returned. For input from a
923 terminal, the special command "end" is used to mark the end of the
924 input, and is not included in the returned chain of commands. */
926 #define END_MESSAGE "End with a line saying just \"end\"."
928 struct command_line *
929 read_command_lines (char *prompt_arg, int from_tty)
931 struct command_line *head, *tail, *next;
932 struct cleanup *old_chain;
933 enum command_control_type ret;
934 enum misc_command_type val;
938 if (from_tty && input_from_terminal_p ())
940 if (deprecated_readline_begin_hook)
942 /* Note - intentional to merge messages with no newline */
943 (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
947 printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
948 gdb_flush (gdb_stdout);
957 val = read_next_line (&next);
959 /* Ignore blank lines or comments. */
960 if (val == nop_command)
963 if (val == end_command)
965 ret = simple_control;
969 if (val != ok_command)
971 ret = invalid_control;
975 if (next->control_type == while_control
976 || next->control_type == if_control)
979 ret = recurse_read_control_structure (next);
982 if (ret == invalid_control)
993 old_chain = make_cleanup_free_command_lines (&head);
1002 if (ret != invalid_control)
1004 discard_cleanups (old_chain);
1007 do_cleanups (old_chain);
1010 if (deprecated_readline_end_hook && from_tty && input_from_terminal_p ())
1012 (*deprecated_readline_end_hook) ();
1017 /* Free a chain of struct command_line's. */
1020 free_command_lines (struct command_line **lptr)
1022 struct command_line *l = *lptr;
1023 struct command_line *next;
1024 struct command_line **blist;
1029 if (l->body_count > 0)
1031 blist = l->body_list;
1032 for (i = 0; i < l->body_count; i++, blist++)
1033 free_command_lines (blist);
1044 do_free_command_lines_cleanup (void *arg)
1046 free_command_lines (arg);
1050 make_cleanup_free_command_lines (struct command_line **arg)
1052 return make_cleanup (do_free_command_lines_cleanup, arg);
1055 struct command_line *
1056 copy_command_lines (struct command_line *cmds)
1058 struct command_line *result = NULL;
1062 result = (struct command_line *) xmalloc (sizeof (struct command_line));
1064 result->next = copy_command_lines (cmds->next);
1065 result->line = xstrdup (cmds->line);
1066 result->control_type = cmds->control_type;
1067 result->body_count = cmds->body_count;
1068 if (cmds->body_count > 0)
1072 result->body_list = (struct command_line **)
1073 xmalloc (sizeof (struct command_line *) * cmds->body_count);
1075 for (i = 0; i < cmds->body_count; i++)
1076 result->body_list[i] = copy_command_lines (cmds->body_list[i]);
1079 result->body_list = NULL;
1086 validate_comname (char *comname)
1091 error_no_arg (_("name of command to define"));
1096 if (!isalnum (*p) && *p != '-' && *p != '_')
1097 error (_("Junk in argument list: \"%s\""), p);
1102 /* This is just a placeholder in the command data structures. */
1104 user_defined_command (char *ignore, int from_tty)
1109 define_command (char *comname, int from_tty)
1111 #define MAX_TMPBUF 128
1118 struct command_line *cmds;
1119 struct cmd_list_element *c, *newc, *oldc, *hookc = 0;
1120 char *tem = comname;
1122 char tmpbuf[MAX_TMPBUF];
1123 int hook_type = CMD_NO_HOOK;
1124 int hook_name_size = 0;
1126 #define HOOK_STRING "hook-"
1128 #define HOOK_POST_STRING "hookpost-"
1129 #define HOOK_POST_LEN 9
1131 validate_comname (comname);
1133 /* Look it up, and verify that we got an exact match. */
1134 c = lookup_cmd (&tem, cmdlist, "", -1, 1);
1135 if (c && strcmp (comname, c->name) != 0)
1141 if (c->class == class_user || c->class == class_alias)
1142 q = query (_("Redefine command \"%s\"? "), c->name);
1144 q = query (_("Really redefine built-in command \"%s\"? "), c->name);
1146 error (_("Command \"%s\" not redefined."), c->name);
1149 /* If this new command is a hook, then mark the command which it
1150 is hooking. Note that we allow hooking `help' commands, so that
1151 we can hook the `stop' pseudo-command. */
1153 if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
1155 hook_type = CMD_PRE_HOOK;
1156 hook_name_size = HOOK_LEN;
1158 else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN))
1160 hook_type = CMD_POST_HOOK;
1161 hook_name_size = HOOK_POST_LEN;
1164 if (hook_type != CMD_NO_HOOK)
1166 /* Look up cmd it hooks, and verify that we got an exact match. */
1167 tem = comname + hook_name_size;
1168 hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
1169 if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0)
1173 warning (_("Your new `%s' command does not hook any existing command."),
1175 if (!query ("Proceed? "))
1176 error (_("Not confirmed."));
1180 comname = savestring (comname, strlen (comname));
1182 /* If the rest of the commands will be case insensitive, this one
1183 should behave in the same manner. */
1184 for (tem = comname; *tem; tem++)
1186 *tem = tolower (*tem);
1188 sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
1189 cmds = read_command_lines (tmpbuf, from_tty);
1191 if (c && c->class == class_user)
1192 free_command_lines (&c->user_commands);
1194 newc = add_cmd (comname, class_user, user_defined_command,
1195 (c && c->class == class_user)
1196 ? c->doc : savestring ("User-defined.", 13), &cmdlist);
1197 newc->user_commands = cmds;
1199 /* If this new command is a hook, then mark both commands as being
1206 hookc->hook_pre = newc; /* Target gets hooked. */
1207 newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
1210 hookc->hook_post = newc; /* Target gets hooked. */
1211 newc->hookee_post = hookc; /* We are marked as hooking target cmd. */
1214 /* Should never come here as hookc would be 0. */
1215 internal_error (__FILE__, __LINE__, _("bad switch"));
1221 document_command (char *comname, int from_tty)
1223 struct command_line *doclines;
1224 struct cmd_list_element *c;
1225 char *tem = comname;
1228 validate_comname (comname);
1230 c = lookup_cmd (&tem, cmdlist, "", 0, 1);
1232 if (c->class != class_user)
1233 error (_("Command \"%s\" is built-in."), comname);
1235 sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
1236 doclines = read_command_lines (tmpbuf, from_tty);
1242 struct command_line *cl1;
1245 for (cl1 = doclines; cl1; cl1 = cl1->next)
1246 len += strlen (cl1->line) + 1;
1248 c->doc = (char *) xmalloc (len + 1);
1251 for (cl1 = doclines; cl1; cl1 = cl1->next)
1253 strcat (c->doc, cl1->line);
1255 strcat (c->doc, "\n");
1259 free_command_lines (&doclines);
1262 struct source_cleanup_lines_args
1269 source_cleanup_lines (void *args)
1271 struct source_cleanup_lines_args *p =
1272 (struct source_cleanup_lines_args *) args;
1273 source_line_number = p->old_line;
1274 source_file_name = p->old_file;
1278 do_fclose_cleanup (void *stream)
1283 struct wrapped_read_command_file_args
1289 wrapped_read_command_file (struct ui_out *uiout, void *data)
1291 struct wrapped_read_command_file_args *args = data;
1292 read_command_file (args->stream);
1295 /* Used to implement source_command */
1298 script_from_file (FILE *stream, char *file)
1300 struct cleanup *old_cleanups;
1301 struct source_cleanup_lines_args old_lines;
1305 internal_error (__FILE__, __LINE__, _("called with NULL file pointer!"));
1307 old_cleanups = make_cleanup (do_fclose_cleanup, stream);
1309 old_lines.old_line = source_line_number;
1310 old_lines.old_file = source_file_name;
1311 make_cleanup (source_cleanup_lines, &old_lines);
1312 source_line_number = 0;
1313 source_file_name = file;
1314 /* This will get set every time we read a line. So it won't stay "" for
1316 error_pre_print = "";
1319 struct gdb_exception e;
1320 struct wrapped_read_command_file_args args;
1321 args.stream = stream;
1322 e = catch_exception (uiout, wrapped_read_command_file, &args,
1329 /* Re-throw the error, but with the file name information
1331 throw_error (e.error,
1332 _("%s:%d: Error in sourced command file:\n%s"),
1333 source_file_name, source_line_number, e.message);
1335 internal_error (__FILE__, __LINE__, _("bad reason"));
1339 do_cleanups (old_cleanups);
1343 show_user_1 (struct cmd_list_element *c, struct ui_file *stream)
1345 struct command_line *cmdlines;
1347 cmdlines = c->user_commands;
1350 fputs_filtered ("User command ", stream);
1351 fputs_filtered (c->name, stream);
1352 fputs_filtered (":\n", stream);
1354 print_command_lines (uiout, cmdlines, 1);
1355 fputs_filtered ("\n", stream);