1 /* GDB CLI command scripting.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
3 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
24 #include "language.h" /* For value_true */
32 #include "cli/cli-cmds.h"
33 #include "cli/cli-decode.h"
34 #include "cli/cli-script.h"
38 extern void dont_repeat (void);
40 extern void do_restore_instream_cleanup (void *stream);
42 /* Prototypes for local functions */
44 static struct cleanup *
45 make_cleanup_free_command_lines (struct command_line **arg);
47 static enum command_control_type
48 recurse_read_control_structure (struct command_line *current_cmd);
50 static char *insert_args (char *line);
52 static struct cleanup * setup_user_args (char *p);
54 static void validate_comname (char *);
56 /* Level of control structure. */
57 static int control_level;
59 /* Source command state variable. */
60 static int source_error_allocated;
62 /* Structure for arguments to user defined functions. */
63 #define MAXUSERARGS 10
66 struct user_args *next;
78 /* Allocate, initialize a new command line structure for one of the
79 control commands (if/while). */
81 static struct command_line *
82 build_command_line (enum command_control_type type, char *args)
84 struct command_line *cmd;
87 error ("if/while commands require arguments.\n");
89 cmd = (struct command_line *) xmalloc (sizeof (struct command_line));
91 cmd->control_type = type;
95 = (struct command_line **) xmalloc (sizeof (struct command_line *)
97 memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count);
98 cmd->line = savestring (args, strlen (args));
102 /* Build and return a new command structure for the control commands
103 such as "if" and "while". */
105 static struct command_line *
106 get_command_line (enum command_control_type type, char *arg)
108 struct command_line *cmd;
109 struct cleanup *old_chain = NULL;
111 /* Allocate and build a new command line structure. */
112 cmd = build_command_line (type, arg);
114 old_chain = make_cleanup_free_command_lines (&cmd);
116 /* Read in the body of this command. */
117 if (recurse_read_control_structure (cmd) == invalid_control)
119 warning ("error reading in control structure\n");
120 do_cleanups (old_chain);
124 discard_cleanups (old_chain);
128 /* Recursively print a command (including full control structures). */
131 print_command_lines (struct ui_out *uiout, struct command_line *cmd,
134 struct command_line *list;
141 ui_out_spaces (uiout, 2 * depth);
143 /* A simple command, print it and continue. */
144 if (list->control_type == simple_control)
146 ui_out_field_string (uiout, NULL, list->line);
147 ui_out_text (uiout, "\n");
152 /* loop_continue to jump to the start of a while loop, print it
154 if (list->control_type == continue_control)
156 ui_out_field_string (uiout, NULL, "loop_continue");
157 ui_out_text (uiout, "\n");
162 /* loop_break to break out of a while loop, print it and continue. */
163 if (list->control_type == break_control)
165 ui_out_field_string (uiout, NULL, "loop_break");
166 ui_out_text (uiout, "\n");
171 /* A while command. Recursively print its subcommands and continue. */
172 if (list->control_type == while_control)
174 ui_out_text (uiout, "while ");
175 ui_out_field_fmt (uiout, NULL, "while %s", list->line);
176 ui_out_text (uiout, "\n");
177 print_command_lines (uiout, *list->body_list, depth + 1);
178 ui_out_field_string (uiout, NULL, "end");
180 ui_out_spaces (uiout, 2 * depth);
181 ui_out_text (uiout, "end\n");
186 /* An if command. Recursively print both arms before continueing. */
187 if (list->control_type == if_control)
189 ui_out_text (uiout, "if ");
190 ui_out_field_fmt (uiout, NULL, "if %s", list->line);
191 ui_out_text (uiout, "\n");
193 print_command_lines (uiout, list->body_list[0], depth + 1);
195 /* Show the false arm if it exists. */
196 if (list->body_count == 2)
199 ui_out_spaces (uiout, 2 * depth);
200 ui_out_field_string (uiout, NULL, "else");
201 ui_out_text (uiout, "else\n");
202 print_command_lines (uiout, list->body_list[1], depth + 1);
205 ui_out_field_string (uiout, NULL, "end");
207 ui_out_spaces (uiout, 2 * depth);
208 ui_out_text (uiout, "end\n");
213 /* ignore illegal command type and try next */
219 print_command_line (struct command_line *cmd, unsigned int depth,
220 struct ui_file *stream)
226 for (i = 0; i < depth; i++)
227 fputs_filtered (" ", stream);
230 /* A simple command, print it and return. */
231 if (cmd->control_type == simple_control)
233 fputs_filtered (cmd->line, stream);
234 fputs_filtered ("\n", stream);
238 /* loop_continue to jump to the start of a while loop, print it
240 if (cmd->control_type == continue_control)
242 fputs_filtered ("loop_continue\n", stream);
246 /* loop_break to break out of a while loop, print it and return. */
247 if (cmd->control_type == break_control)
249 fputs_filtered ("loop_break\n", stream);
253 /* A while command. Recursively print its subcommands before returning. */
254 if (cmd->control_type == while_control)
256 struct command_line *list;
257 fputs_filtered ("while ", stream);
258 fputs_filtered (cmd->line, stream);
259 fputs_filtered ("\n", stream);
260 list = *cmd->body_list;
263 print_command_line (list, depth + 1, stream);
268 /* An if command. Recursively print both arms before returning. */
269 if (cmd->control_type == if_control)
271 fputs_filtered ("if ", stream);
272 fputs_filtered (cmd->line, stream);
273 fputs_filtered ("\n", stream);
275 print_command_line (cmd->body_list[0], depth + 1, stream);
277 /* Show the false arm if it exists. */
278 if (cmd->body_count == 2)
282 for (i = 0; i < depth; i++)
283 fputs_filtered (" ", stream);
285 fputs_filtered ("else\n", stream);
286 print_command_line (cmd->body_list[1], depth + 1, stream);
290 for (i = 0; i < depth; i++)
291 fputs_filtered (" ", stream);
293 fputs_filtered ("end\n", stream);
298 /* Execute the command in CMD. */
301 execute_user_command (struct cmd_list_element *c, char *args)
303 register struct command_line *cmdlines;
304 struct cleanup *old_chain;
305 enum command_control_type ret;
307 old_chain = setup_user_args (args);
309 cmdlines = c->user_commands;
314 /* Set the instream to 0, indicating execution of a
315 user-defined function. */
316 old_chain = make_cleanup (do_restore_instream_cleanup, instream);
317 instream = (FILE *) 0;
320 ret = execute_control_command (cmdlines);
321 if (ret != simple_control && ret != break_control)
323 warning ("Error in control structure.\n");
326 cmdlines = cmdlines->next;
328 do_cleanups (old_chain);
331 enum command_control_type
332 execute_control_command (struct command_line *cmd)
334 struct expression *expr;
335 struct command_line *current;
336 struct cleanup *old_chain = 0;
340 enum command_control_type ret;
343 switch (cmd->control_type)
346 /* A simple command, execute it and return. */
347 new_line = insert_args (cmd->line);
349 return invalid_control;
350 old_chain = make_cleanup (free_current_contents, &new_line);
351 execute_command (new_line, 0);
352 ret = cmd->control_type;
355 case continue_control:
357 /* Return for "continue", and "break" so we can either
358 continue the loop at the top, or break out. */
359 ret = cmd->control_type;
364 /* Parse the loop control expression for the while statement. */
365 new_line = insert_args (cmd->line);
367 return invalid_control;
368 old_chain = make_cleanup (free_current_contents, &new_line);
369 expr = parse_expression (new_line);
370 make_cleanup (free_current_contents, &expr);
372 ret = simple_control;
375 /* Keep iterating so long as the expression is true. */
382 /* Evaluate the expression. */
383 val_mark = value_mark ();
384 val = evaluate_expression (expr);
385 cond_result = value_true (val);
386 value_free_to_mark (val_mark);
388 /* If the value is false, then break out of the loop. */
392 /* Execute the body of the while statement. */
393 current = *cmd->body_list;
396 ret = execute_control_command (current);
398 /* If we got an error, or a "break" command, then stop
400 if (ret == invalid_control || ret == break_control)
406 /* If we got a "continue" command, then restart the loop
408 if (ret == continue_control)
411 /* Get the next statement. */
412 current = current->next;
416 /* Reset RET so that we don't recurse the break all the way down. */
417 if (ret == break_control)
418 ret = simple_control;
425 new_line = insert_args (cmd->line);
427 return invalid_control;
428 old_chain = make_cleanup (free_current_contents, &new_line);
429 /* Parse the conditional for the if statement. */
430 expr = parse_expression (new_line);
431 make_cleanup (free_current_contents, &expr);
434 ret = simple_control;
436 /* Evaluate the conditional. */
437 val_mark = value_mark ();
438 val = evaluate_expression (expr);
440 /* Choose which arm to take commands from based on the value of the
441 conditional expression. */
442 if (value_true (val))
443 current = *cmd->body_list;
444 else if (cmd->body_count == 2)
445 current = *(cmd->body_list + 1);
446 value_free_to_mark (val_mark);
448 /* Execute commands in the given arm. */
451 ret = execute_control_command (current);
453 /* If we got an error, get out. */
454 if (ret != simple_control)
457 /* Get the next statement in the body. */
458 current = current->next;
465 warning ("Invalid control type in command structure.");
466 return invalid_control;
470 do_cleanups (old_chain);
475 /* "while" command support. Executes a body of statements while the
476 loop condition is nonzero. */
479 while_command (char *arg, int from_tty)
481 struct command_line *command = NULL;
484 command = get_command_line (while_control, arg);
489 execute_control_command (command);
490 free_command_lines (&command);
493 /* "if" command support. Execute either the true or false arm depending
494 on the value of the if conditional. */
497 if_command (char *arg, int from_tty)
499 struct command_line *command = NULL;
502 command = get_command_line (if_control, arg);
507 execute_control_command (command);
508 free_command_lines (&command);
513 arg_cleanup (void *ignore)
515 struct user_args *oargs = user_args;
517 internal_error (__FILE__, __LINE__,
518 "arg_cleanup called with no user args.\n");
520 user_args = user_args->next;
524 /* Bind the incomming arguments for a user defined command to
525 $arg0, $arg1 ... $argMAXUSERARGS. */
527 static struct cleanup *
528 setup_user_args (char *p)
530 struct user_args *args;
531 struct cleanup *old_chain;
532 unsigned int arg_count = 0;
534 args = (struct user_args *) xmalloc (sizeof (struct user_args));
535 memset (args, 0, sizeof (struct user_args));
537 args->next = user_args;
540 old_chain = make_cleanup (arg_cleanup, 0/*ignored*/);
552 if (arg_count >= MAXUSERARGS)
554 error ("user defined function may only have %d arguments.\n",
559 /* Strip whitespace. */
560 while (*p == ' ' || *p == '\t')
563 /* P now points to an argument. */
565 user_args->a[arg_count].arg = p;
567 /* Get to the end of this argument. */
570 if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote)
599 user_args->a[arg_count].len = p - start_arg;
606 /* Given character string P, return a point to the first argument ($arg),
607 or NULL if P contains no arguments. */
612 while ((p = strchr (p, '$')))
614 if (strncmp (p, "$arg", 4) == 0 && isdigit (p[4]))
621 /* Insert the user defined arguments stored in user_arg into the $arg
622 arguments found in line, with the updated copy being placed into nline. */
625 insert_args (char *line)
627 char *p, *save_line, *new_line;
630 /* First we need to know how much memory to allocate for the new line. */
633 while ((p = locate_arg (line)))
638 if (i >= user_args->count)
640 error ("Missing argument %d in user function.\n", i);
643 len += user_args->a[i].len;
647 /* Don't forget the tail. */
648 len += strlen (line);
650 /* Allocate space for the new line and fill it in. */
651 new_line = (char *) xmalloc (len + 1);
652 if (new_line == NULL)
655 /* Restore pointer to beginning of old line. */
658 /* Save pointer to beginning of new line. */
659 save_line = new_line;
661 while ((p = locate_arg (line)))
665 memcpy (new_line, line, p - line);
666 new_line += p - line;
669 len = user_args->a[i].len;
672 memcpy (new_line, user_args->a[i].arg, len);
677 /* Don't forget the tail. */
678 strcpy (new_line, line);
680 /* Return a pointer to the beginning of the new line. */
685 /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH
686 code bodies. This is typically used when we encounter an "else"
687 clause for an "if" command. */
690 realloc_body_list (struct command_line *command, int new_length)
693 struct command_line **body_list;
695 n = command->body_count;
701 body_list = (struct command_line **)
702 xmalloc (sizeof (struct command_line *) * new_length);
704 memcpy (body_list, command->body_list, sizeof (struct command_line *) * n);
706 xfree (command->body_list);
707 command->body_list = body_list;
708 command->body_count = new_length;
711 /* Read one line from the input stream. If the command is an "else" or
712 "end", return such an indication to the caller. */
714 static enum misc_command_type
715 read_next_line (struct command_line **command)
717 char *p, *p1, *prompt_ptr, control_prompt[256];
720 if (control_level >= 254)
721 error ("Control nesting too deep!\n");
723 /* Set a prompt based on the nesting of the control commands. */
724 if (instream == stdin || (instream == 0 && readline_hook != NULL))
726 for (i = 0; i < control_level; i++)
727 control_prompt[i] = ' ';
728 control_prompt[i] = '>';
729 control_prompt[i + 1] = '\0';
730 prompt_ptr = (char *) &control_prompt[0];
735 p = command_line_input (prompt_ptr, instream == stdin, "commands");
737 /* Not sure what to do here. */
741 /* Strip leading and trailing whitespace. */
742 while (*p == ' ' || *p == '\t')
746 while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t'))
749 /* Blanks and comments don't really do anything, but we need to
750 distinguish them from else, end and other commands which can be
752 if (p1 == p || p[0] == '#')
755 /* Is this the end of a simple, while, or if control structure? */
756 if (p1 - p == 3 && !strncmp (p, "end", 3))
759 /* Is the else clause of an if control structure? */
760 if (p1 - p == 4 && !strncmp (p, "else", 4))
763 /* Check for while, if, break, continue, etc and build a new command
764 line structure for them. */
765 if (p1 - p > 5 && !strncmp (p, "while", 5))
766 *command = build_command_line (while_control, p + 6);
767 else if (p1 - p > 2 && !strncmp (p, "if", 2))
768 *command = build_command_line (if_control, p + 3);
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)
825 error ("Recursed on a simple control type\n");
826 return invalid_control;
829 if (current_body > current_cmd->body_count)
831 error ("Allocated body is smaller than this command type needs\n");
832 return invalid_control;
835 /* Read lines from the input stream and build control structures. */
841 val = read_next_line (&next);
843 /* Just skip blanks and comments. */
844 if (val == nop_command)
847 if (val == end_command)
849 if (current_cmd->control_type == while_control
850 || current_cmd->control_type == if_control)
852 /* Success reading an entire control structure. */
853 ret = simple_control;
858 ret = invalid_control;
863 /* Not the end of a control structure. */
864 if (val == else_command)
866 if (current_cmd->control_type == if_control
867 && current_body == 1)
869 realloc_body_list (current_cmd, 2);
876 ret = invalid_control;
883 child_tail->next = next;
887 body_ptr = current_cmd->body_list;
888 for (i = 1; i < current_body; i++)
897 /* If the latest line is another control structure, then recurse
899 if (next->control_type == while_control
900 || next->control_type == if_control)
903 ret = recurse_read_control_structure (next);
906 if (ret != simple_control)
916 /* Read lines from the input stream and accumulate them in a chain of
917 struct command_line's, which is then returned. For input from a
918 terminal, the special command "end" is used to mark the end of the
919 input, and is not included in the returned chain of commands. */
921 #define END_MESSAGE "End with a line saying just \"end\"."
923 struct command_line *
924 read_command_lines (char *prompt_arg, int from_tty)
926 struct command_line *head, *tail, *next;
927 struct cleanup *old_chain;
928 enum command_control_type ret;
929 enum misc_command_type val;
932 if (readline_begin_hook)
934 /* Note - intentional to merge messages with no newline */
935 (*readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE);
937 else if (from_tty && input_from_terminal_p ())
939 printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE);
940 gdb_flush (gdb_stdout);
948 val = read_next_line (&next);
950 /* Ignore blank lines or comments. */
951 if (val == nop_command)
954 if (val == end_command)
956 ret = simple_control;
960 if (val != ok_command)
962 ret = invalid_control;
966 if (next->control_type == while_control
967 || next->control_type == if_control)
970 ret = recurse_read_control_structure (next);
973 if (ret == invalid_control)
984 old_chain = make_cleanup_free_command_lines (&head);
993 if (ret != invalid_control)
995 discard_cleanups (old_chain);
998 do_cleanups (old_chain);
1001 if (readline_end_hook)
1003 (*readline_end_hook) ();
1008 /* Free a chain of struct command_line's. */
1011 free_command_lines (struct command_line **lptr)
1013 register struct command_line *l = *lptr;
1014 register struct command_line *next;
1015 struct command_line **blist;
1020 if (l->body_count > 0)
1022 blist = l->body_list;
1023 for (i = 0; i < l->body_count; i++, blist++)
1024 free_command_lines (blist);
1034 do_free_command_lines_cleanup (void *arg)
1036 free_command_lines (arg);
1039 static struct cleanup *
1040 make_cleanup_free_command_lines (struct command_line **arg)
1042 return make_cleanup (do_free_command_lines_cleanup, arg);
1046 validate_comname (char *comname)
1051 error_no_arg ("name of command to define");
1056 if (!isalnum (*p) && *p != '-' && *p != '_')
1057 error ("Junk in argument list: \"%s\"", p);
1062 /* This is just a placeholder in the command data structures. */
1064 user_defined_command (char *ignore, int from_tty)
1069 define_command (char *comname, int from_tty)
1071 #define MAX_TMPBUF 128
1078 register struct command_line *cmds;
1079 register struct cmd_list_element *c, *newc, *oldc, *hookc = 0;
1080 char *tem = comname;
1082 char tmpbuf[MAX_TMPBUF];
1083 int hook_type = CMD_NO_HOOK;
1084 int hook_name_size = 0;
1086 #define HOOK_STRING "hook-"
1088 #define HOOK_POST_STRING "hookpost-"
1089 #define HOOK_POST_LEN 9
1091 validate_comname (comname);
1093 /* Look it up, and verify that we got an exact match. */
1094 c = lookup_cmd (&tem, cmdlist, "", -1, 1);
1095 if (c && !STREQ (comname, c->name))
1100 if (c->class == class_user || c->class == class_alias)
1101 tem = "Redefine command \"%s\"? ";
1103 tem = "Really redefine built-in command \"%s\"? ";
1104 if (!query (tem, c->name))
1105 error ("Command \"%s\" not redefined.", c->name);
1108 /* If this new command is a hook, then mark the command which it
1109 is hooking. Note that we allow hooking `help' commands, so that
1110 we can hook the `stop' pseudo-command. */
1112 if (!strncmp (comname, HOOK_STRING, HOOK_LEN))
1114 hook_type = CMD_PRE_HOOK;
1115 hook_name_size = HOOK_LEN;
1117 else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN))
1119 hook_type = CMD_POST_HOOK;
1120 hook_name_size = HOOK_POST_LEN;
1123 if (hook_type != CMD_NO_HOOK)
1125 /* Look up cmd it hooks, and verify that we got an exact match. */
1126 tem = comname + hook_name_size;
1127 hookc = lookup_cmd (&tem, cmdlist, "", -1, 0);
1128 if (hookc && !STREQ (comname + hook_name_size, hookc->name))
1132 warning ("Your new `%s' command does not hook any existing command.",
1134 if (!query ("Proceed? "))
1135 error ("Not confirmed.");
1139 comname = savestring (comname, strlen (comname));
1141 /* If the rest of the commands will be case insensitive, this one
1142 should behave in the same manner. */
1143 for (tem = comname; *tem; tem++)
1145 *tem = tolower (*tem);
1147 sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname);
1148 cmds = read_command_lines (tmpbuf, from_tty);
1150 if (c && c->class == class_user)
1151 free_command_lines (&c->user_commands);
1153 newc = add_cmd (comname, class_user, user_defined_command,
1154 (c && c->class == class_user)
1155 ? c->doc : savestring ("User-defined.", 13), &cmdlist);
1156 newc->user_commands = cmds;
1158 /* If this new command is a hook, then mark both commands as being
1165 hookc->hook_pre = newc; /* Target gets hooked. */
1166 newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
1169 hookc->hook_pre = newc; /* Target gets hooked. */
1170 newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */
1173 /* Should never come here as hookc would be 0. */
1174 internal_error (__FILE__, __LINE__, "bad switch");
1180 document_command (char *comname, int from_tty)
1182 struct command_line *doclines;
1183 register struct cmd_list_element *c;
1184 char *tem = comname;
1187 validate_comname (comname);
1189 c = lookup_cmd (&tem, cmdlist, "", 0, 1);
1191 if (c->class != class_user)
1192 error ("Command \"%s\" is built-in.", comname);
1194 sprintf (tmpbuf, "Type documentation for \"%s\".", comname);
1195 doclines = read_command_lines (tmpbuf, from_tty);
1201 register struct command_line *cl1;
1202 register int len = 0;
1204 for (cl1 = doclines; cl1; cl1 = cl1->next)
1205 len += strlen (cl1->line) + 1;
1207 c->doc = (char *) xmalloc (len + 1);
1210 for (cl1 = doclines; cl1; cl1 = cl1->next)
1212 strcat (c->doc, cl1->line);
1214 strcat (c->doc, "\n");
1218 free_command_lines (&doclines);
1221 struct source_cleanup_lines_args
1225 char *old_pre_error;
1226 char *old_error_pre_print;
1230 source_cleanup_lines (PTR args)
1232 struct source_cleanup_lines_args *p =
1233 (struct source_cleanup_lines_args *) args;
1234 source_line_number = p->old_line;
1235 source_file_name = p->old_file;
1236 source_pre_error = p->old_pre_error;
1237 error_pre_print = p->old_error_pre_print;
1242 do_fclose_cleanup (void *stream)
1247 /* Used to implement source_command */
1250 script_from_file (FILE *stream, char *file)
1252 struct cleanup *old_cleanups;
1253 struct source_cleanup_lines_args old_lines;
1258 internal_error (__FILE__, __LINE__, "called with NULL file pointer!");
1261 old_cleanups = make_cleanup (do_fclose_cleanup, stream);
1263 old_lines.old_line = source_line_number;
1264 old_lines.old_file = source_file_name;
1265 old_lines.old_pre_error = source_pre_error;
1266 old_lines.old_error_pre_print = error_pre_print;
1267 make_cleanup (source_cleanup_lines, &old_lines);
1268 source_line_number = 0;
1269 source_file_name = file;
1270 source_pre_error = error_pre_print == NULL ? "" : error_pre_print;
1271 source_pre_error = savestring (source_pre_error, strlen (source_pre_error));
1272 make_cleanup (xfree, source_pre_error);
1273 /* This will get set every time we read a line. So it won't stay "" for
1275 error_pre_print = "";
1277 needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80;
1278 if (source_error_allocated < needed_length)
1280 source_error_allocated *= 2;
1281 if (source_error_allocated < needed_length)
1282 source_error_allocated = needed_length;
1283 if (source_error == NULL)
1284 source_error = xmalloc (source_error_allocated);
1286 source_error = xrealloc (source_error, source_error_allocated);
1289 read_command_file (stream);
1291 do_cleanups (old_cleanups);
1295 show_user_1 (struct cmd_list_element *c, struct ui_file *stream)
1297 register struct command_line *cmdlines;
1299 cmdlines = c->user_commands;
1302 fputs_filtered ("User command ", stream);
1303 fputs_filtered (c->name, stream);
1304 fputs_filtered (":\n", stream);
1307 print_command_lines (uiout, cmdlines, 1);
1308 fputs_filtered ("\n", stream);
1312 print_command_line (cmdlines, 4, stream);
1313 cmdlines = cmdlines->next;
1315 fputs_filtered ("\n", stream);