/* Top level stuff for GDB, the GNU debugger.
- Copyright (C) 1986-2015 Free Software Foundation, Inc.
+ Copyright (C) 1986-2017 Free Software Foundation, Inc.
This file is part of GDB.
#include "value.h"
#include "language.h"
#include "terminal.h" /* For job_control. */
+#include "job-control.h"
#include "annotate.h"
#include "completer.h"
#include "top.h"
#include "observer.h"
#include "maint.h"
#include "filenames.h"
+#include "frame.h"
+#include "buffer.h"
+#include "gdb_select.h"
/* readline include files. */
#include "readline/readline.h"
#include "tracepoint.h"
#include "inf-loop.h"
+#if defined(TUI)
+# include "tui/tui.h"
+#endif
+
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
extern void initialize_all_files (void);
#define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt
#define DEFAULT_PROMPT "(gdb) "
#endif
+/* Generate a function that exports a pointer to a field of the
+ current UI. */
+
+#define gen_ret_current_ui_field_ptr(type, name) \
+type * \
+current_ui_## name ## _ptr (void) \
+{ \
+ return ¤t_ui->m_ ## name; \
+}
+
+gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdout)
+gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdin)
+gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stderr)
+gen_ret_current_ui_field_ptr (struct ui_file *, gdb_stdlog)
+gen_ret_current_ui_field_ptr (struct ui_out *, current_uiout)
+
/* Initialization file name for gdb. This is host-dependent. */
const char gdbinit[] = GDBINIT;
value);
}
-/* stdio stream that command input is being read from. Set to stdin
- normally. Set by source_command to the file we are sourcing. Set
- to NULL if we are executing a user-defined command or interacting
- via a GUI. */
-
-FILE *instream;
-
-/* Flag to indicate whether a user defined command is currently running. */
-
-int in_user_command;
-
/* Current working directory. */
char *current_directory;
/* The directory name is actually stored here (usually). */
char gdb_dirbuf[1024];
-/* Function to call before reading a command, if nonzero.
- The function receives two args: an input stream,
- and a prompt string. */
-
-void (*window_hook) (FILE *, char *);
-
-/* Buffer used for reading command lines, and the size
- allocated for it so far. */
-
+/* The last command line executed on the console. Used for command
+ repetitions. */
char *saved_command_line;
-int saved_command_line_size = 100;
/* Nonzero if the current command is modified by "server ". This
affects things like recording into the command history, commands
called to notify the GUI that we are done with the interaction
window and it can close it. */
-void (*deprecated_readline_begin_hook) (char *, ...);
+void (*deprecated_readline_begin_hook) (const char *, ...);
char *(*deprecated_readline_hook) (const char *);
void (*deprecated_readline_end_hook) (void);
void (*deprecated_interactive_hook) (void);
-/* Tell the GUI someone changed the register REGNO. -1 means
- that the caller does not know which register changed or
- that several registers have changed (see value_assign). */
-void (*deprecated_register_changed_hook) (int regno);
-
/* Called when going to wait for the target. Usually allows the GUI
to run while waiting for target events. */
void (*deprecated_context_hook) (int id);
+/* The highest UI number ever assigned. */
+static int highest_ui_num;
+
+/* See top.h. */
+
+struct ui *
+new_ui (FILE *instream, FILE *outstream, FILE *errstream)
+{
+ struct ui *ui;
+
+ ui = XCNEW (struct ui);
+
+ ui->num = ++highest_ui_num;
+ ui->stdin_stream = instream;
+ ui->instream = instream;
+ ui->outstream = outstream;
+ ui->errstream = errstream;
+
+ ui->input_fd = fileno (ui->instream);
+
+ ui->input_interactive_p = ISATTY (ui->instream);
+
+ ui->m_gdb_stdin = new stdio_file (ui->instream);
+ ui->m_gdb_stdout = new stdio_file (ui->outstream);
+ ui->m_gdb_stderr = new stderr_file (ui->errstream);
+ ui->m_gdb_stdlog = ui->m_gdb_stderr;
+
+ ui->prompt_state = PROMPT_NEEDED;
+
+ if (ui_list == NULL)
+ ui_list = ui;
+ else
+ {
+ struct ui *last;
+
+ for (last = ui_list; last->next != NULL; last = last->next)
+ ;
+ last->next = ui;
+ }
+
+ return ui;
+}
+
+static void
+free_ui (struct ui *ui)
+{
+ delete ui->m_gdb_stdin;
+ delete ui->m_gdb_stdout;
+ delete ui->m_gdb_stderr;
+
+ xfree (ui);
+}
+
+void
+delete_ui (struct ui *todel)
+{
+ struct ui *ui, *uiprev;
+
+ uiprev = NULL;
+
+ for (ui = ui_list; ui != NULL; uiprev = ui, ui = ui->next)
+ if (ui == todel)
+ break;
+
+ gdb_assert (ui != NULL);
+
+ if (uiprev != NULL)
+ uiprev->next = ui->next;
+ else
+ ui_list = ui->next;
+
+ free_ui (ui);
+}
+
+/* Cleanup that deletes a UI. */
+
+static void
+delete_ui_cleanup (void *void_ui)
+{
+ struct ui *ui = (struct ui *) void_ui;
+
+ delete_ui (ui);
+}
+
+/* See top.h. */
+
+struct cleanup *
+make_delete_ui_cleanup (struct ui *ui)
+{
+ return make_cleanup (delete_ui_cleanup, ui);
+}
+
+/* Open file named NAME for read/write, making sure not to make it the
+ controlling terminal. */
+
+static gdb_file_up
+open_terminal_stream (const char *name)
+{
+ int fd;
+
+ fd = gdb_open_cloexec (name, O_RDWR | O_NOCTTY, 0);
+ if (fd < 0)
+ perror_with_name (_("opening terminal failed"));
+
+ return gdb_file_up (fdopen (fd, "w+"));
+}
+
+/* Implementation of the "new-ui" command. */
+
+static void
+new_ui_command (char *args, int from_tty)
+{
+ struct ui *ui;
+ struct interp *interp;
+ gdb_file_up stream[3];
+ int i;
+ int res;
+ int argc;
+ char **argv;
+ const char *interpreter_name;
+ const char *tty_name;
+ struct cleanup *success_chain;
+ struct cleanup *failure_chain;
+
+ dont_repeat ();
+
+ argv = gdb_buildargv (args);
+ success_chain = make_cleanup_freeargv (argv);
+ argc = countargv (argv);
+
+ if (argc < 2)
+ error (_("usage: new-ui <interpreter> <tty>"));
+
+ interpreter_name = argv[0];
+ tty_name = argv[1];
+
+ {
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+
+ /* Open specified terminal, once for each of
+ stdin/stdout/stderr. */
+ for (i = 0; i < 3; i++)
+ stream[i] = open_terminal_stream (tty_name);
+
+ ui = new_ui (stream[0].get (), stream[1].get (), stream[2].get ());
+ failure_chain = make_cleanup (delete_ui_cleanup, ui);
+
+ ui->async = 1;
+
+ current_ui = ui;
+
+ set_top_level_interpreter (interpreter_name);
+
+ interp_pre_command_loop (top_level_interpreter ());
+
+ /* Make sure the files are not closed. */
+ stream[0].release ();
+ stream[1].release ();
+ stream[2].release ();
+
+ discard_cleanups (failure_chain);
+
+ /* This restores the previous UI and frees argv. */
+ do_cleanups (success_chain);
+ }
+
+ printf_unfiltered ("New UI allocated\n");
+}
+
/* Handler for SIGHUP. */
#ifdef SIGHUP
event-top.c into this file, top.c. */
/* static */ const char *source_file_name;
-/* Clean up on error during a "source" command (or execution of a
- user-defined command). */
-
-void
-do_restore_instream_cleanup (void *stream)
-{
- /* Restore the previous input stream. */
- instream = stream;
-}
-
/* Read commands from STREAM. */
void
read_command_file (FILE *stream)
{
- struct cleanup *cleanups;
+ struct ui *ui = current_ui;
+
+ scoped_restore save_instream
+ = make_scoped_restore (&ui->instream, stream);
+
+ /* Read commands from `instream' and execute them until end of file
+ or error reading instream. */
+
+ while (ui->instream != NULL && !feof (ui->instream))
+ {
+ char *command;
- cleanups = make_cleanup (do_restore_instream_cleanup, instream);
- instream = stream;
- command_loop ();
- do_cleanups (cleanups);
+ /* Get a command-line. This calls the readline package. */
+ command = command_line_input (NULL, 0, NULL);
+ if (command == NULL)
+ break;
+ command_handler (command);
+ }
}
\f
void (*pre_init_ui_hook) (void);
static void
do_chdir_cleanup (void *old_dir)
{
- chdir (old_dir);
+ chdir ((const char *) old_dir);
xfree (old_dir);
}
#endif
check_frame_language_change (void)
{
static int warned = 0;
+ struct frame_info *frame;
/* First make sure that a new frame has been selected, in case the
command or the hooks changed the program state. */
- deprecated_safe_get_selected_frame ();
+ frame = deprecated_safe_get_selected_frame ();
if (current_language != expected_language)
{
if (language_mode == language_mode_auto && info_verbose)
{
enum language flang;
- flang = get_frame_language ();
+ flang = get_frame_language (frame);
if (!warned
&& flang != language_unknown
&& flang != current_language->la_language)
/* See top.h. */
+void
+wait_sync_command_done (void)
+{
+ /* Processing events may change the current UI. */
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+ struct ui *ui = current_ui;
+
+ while (gdb_do_one_event () >= 0)
+ if (ui->prompt_state != PROMPT_BLOCKED)
+ break;
+}
+
+/* See top.h. */
+
void
maybe_wait_sync_command_done (int was_sync)
{
command's list, running command hooks or similars), and we
just ran a synchronous command that started the target, wait
for that command to end. */
- if (!interpreter_async && !was_sync && sync_execution)
- {
- while (gdb_do_one_event () >= 0)
- if (!sync_execution)
- break;
- }
+ if (!current_ui->async
+ && !was_sync
+ && current_ui->prompt_state == PROMPT_BLOCKED)
+ wait_sync_command_done ();
}
/* Execute the line P as a command, in the current user context.
{
const char *cmd = p;
char *arg;
- int was_sync = sync_execution;
+ int was_sync = current_ui->prompt_state == PROMPT_BLOCKED;
line = p;
returned string, do not display it to the screen. BATCH_FLAG will be
temporarily set to true. */
-char *
+std::string
execute_command_to_string (char *p, int from_tty)
{
- struct ui_file *str_file;
struct cleanup *cleanup;
- char *retval;
/* GDB_STDOUT should be better already restored during these
restoration callbacks. */
cleanup = set_batch_flag_and_make_cleanup_restore_page_info ();
- make_cleanup_restore_integer (&interpreter_async);
- interpreter_async = 0;
+ scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0);
- str_file = mem_fileopen ();
+ string_file str_file;
- make_cleanup_ui_file_delete (str_file);
- make_cleanup_restore_ui_file (&gdb_stdout);
- make_cleanup_restore_ui_file (&gdb_stderr);
- make_cleanup_restore_ui_file (&gdb_stdlog);
- make_cleanup_restore_ui_file (&gdb_stdtarg);
- make_cleanup_restore_ui_file (&gdb_stdtargerr);
+ current_uiout->redirect (&str_file);
+ make_cleanup_ui_out_redirect_pop (current_uiout);
- if (ui_out_redirect (current_uiout, str_file) < 0)
- warning (_("Current output protocol does not support redirection"));
- else
- make_cleanup_ui_out_redirect_pop (current_uiout);
-
- gdb_stdout = str_file;
- gdb_stderr = str_file;
- gdb_stdlog = str_file;
- gdb_stdtarg = str_file;
- gdb_stdtargerr = str_file;
+ scoped_restore save_stdout
+ = make_scoped_restore (&gdb_stdout, &str_file);
+ scoped_restore save_stderr
+ = make_scoped_restore (&gdb_stderr, &str_file);
+ scoped_restore save_stdlog
+ = make_scoped_restore (&gdb_stdlog, &str_file);
+ scoped_restore save_stdtarg
+ = make_scoped_restore (&gdb_stdtarg, &str_file);
+ scoped_restore save_stdtargerr
+ = make_scoped_restore (&gdb_stdtargerr, &str_file);
execute_command (p, from_tty);
- retval = ui_file_xstrdup (str_file, NULL);
-
do_cleanups (cleanup);
- return retval;
+ return std::move (str_file.string ());
}
-/* Read commands from `instream' and execute them
- until end of file or error reading instream. */
-
-void
-command_loop (void)
-{
- struct cleanup *old_chain;
- char *command;
- int stdin_is_tty = ISATTY (stdin);
-
- while (instream && !feof (instream))
- {
- if (window_hook && instream == stdin)
- (*window_hook) (instream, get_prompt ());
-
- clear_quit_flag ();
- if (instream == stdin && stdin_is_tty)
- reinitialize_more_filter ();
- old_chain = make_cleanup (null_cleanup, 0);
-
- /* Get a command-line. This calls the readline package. */
- command = command_line_input (instream == stdin ?
- get_prompt () : (char *) NULL,
- instream == stdin, "prompt");
- if (command == 0)
- {
- do_cleanups (old_chain);
- return;
- }
-
- make_command_stats_cleanup (1);
-
- /* Do not execute commented lines. */
- if (command[0] != '#')
- {
- execute_command (command, instream == stdin);
-
- /* Do any commands attached to breakpoint we are stopped at. */
- bpstat_do_actions ();
- }
- do_cleanups (old_chain);
- }
-}
\f
/* When nonzero, cause dont_repeat to do nothing. This should only be
set via prevent_dont_repeat. */
void
dont_repeat (void)
{
+ struct ui *ui = current_ui;
+
if (suppress_dont_repeat || server_command)
return;
/* If we aren't reading from standard input, we are saving the last
thing read from stdin in line and don't want to delete it. Null
lines won't repeat here in any case. */
- if (instream == stdin)
+ if (ui->instream == ui->stdin_stream)
*saved_command_line = 0;
}
/* Prevent dont_repeat from working, and return a cleanup that
restores the previous state. */
-struct cleanup *
+scoped_restore_tmpl<int>
prevent_dont_repeat (void)
{
- struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat);
-
- suppress_dont_repeat = 1;
- return result;
+ return make_scoped_restore (&suppress_dont_repeat, 1);
}
\f
/* Read a line from the stream "instream" without command line editing.
- It prints PROMPT_ARG once at the start.
+ It prints PROMPT once at the start.
Action is compatible with "readline", e.g. space for the result is
malloc'd and should be freed by the caller.
A NULL return means end of file. */
-char *
-gdb_readline (const char *prompt_arg)
+
+static char *
+gdb_readline_no_editing (const char *prompt)
{
- int c;
- char *result;
- int input_index = 0;
- int result_size = 80;
+ struct buffer line_buffer;
+ struct ui *ui = current_ui;
+ /* Read from stdin if we are executing a user defined command. This
+ is the right thing for prompt_for_continue, at least. */
+ FILE *stream = ui->instream != NULL ? ui->instream : stdin;
+ int fd = fileno (stream);
- if (prompt_arg)
+ buffer_init (&line_buffer);
+
+ if (prompt != NULL)
{
/* Don't use a _filtered function here. It causes the assumed
character position to be off, since the newline we read from
the user is not accounted for. */
- fputs_unfiltered (prompt_arg, gdb_stdout);
+ fputs_unfiltered (prompt, gdb_stdout);
gdb_flush (gdb_stdout);
}
- result = (char *) xmalloc (result_size);
-
while (1)
{
- /* Read from stdin if we are executing a user defined command.
- This is the right thing for prompt_for_continue, at least. */
- c = fgetc (instream ? instream : stdin);
+ int c;
+ int numfds;
+ fd_set readfds;
+
+ QUIT;
+
+ /* Wait until at least one byte of data is available. Control-C
+ can interrupt interruptible_select, but not fgetc. */
+ FD_ZERO (&readfds);
+ FD_SET (fd, &readfds);
+ if (interruptible_select (fd + 1, &readfds, NULL, NULL, NULL) == -1)
+ {
+ if (errno == EINTR)
+ {
+ /* If this was ctrl-c, the QUIT above handles it. */
+ continue;
+ }
+ perror_with_name (("select"));
+ }
+
+ c = fgetc (stream);
if (c == EOF)
{
- if (input_index > 0)
+ if (line_buffer.used_size > 0)
/* The last line does not end with a newline. Return it, and
if we are called again fgetc will still return EOF and
we'll return NULL then. */
break;
- xfree (result);
+ xfree (buffer_finish (&line_buffer));
return NULL;
}
if (c == '\n')
{
- if (input_index > 0 && result[input_index - 1] == '\r')
- input_index--;
+ if (line_buffer.used_size > 0
+ && line_buffer.buffer[line_buffer.used_size - 1] == '\r')
+ line_buffer.used_size--;
break;
}
- result[input_index++] = c;
- while (input_index >= result_size)
- {
- result_size *= 2;
- result = (char *) xrealloc (result, result_size);
- }
+ buffer_grow_char (&line_buffer, c);
}
- result[input_index++] = '\0';
- return result;
+ buffer_grow_char (&line_buffer, '\0');
+ return buffer_finish (&line_buffer);
}
/* Variables which control command line editing and history
return. */
static void (*saved_after_char_processing_hook) (void);
+
+/* See top.h. */
+
+int
+gdb_in_secondary_prompt_p (struct ui *ui)
+{
+ return ui->secondary_prompt_depth > 0;
+}
+
+
/* This function is called when readline has seen a complete line of
text. */
we're handling an asynchronous target event and running in the
background, just before returning to the event loop to process
further input (or more target events). */
- if (async_command_editing_p)
+ if (current_ui->command_editing)
gdb_rl_callback_handler_remove ();
}
static void
gdb_readline_wrapper_cleanup (void *arg)
{
- struct gdb_readline_wrapper_cleanup *cleanup = arg;
+ struct ui *ui = current_ui;
+ struct gdb_readline_wrapper_cleanup *cleanup
+ = (struct gdb_readline_wrapper_cleanup *) arg;
- rl_already_prompted = cleanup->already_prompted_orig;
+ if (ui->command_editing)
+ rl_already_prompted = cleanup->already_prompted_orig;
- gdb_assert (input_handler == gdb_readline_wrapper_line);
- input_handler = cleanup->handler_orig;
+ gdb_assert (ui->input_handler == gdb_readline_wrapper_line);
+ ui->input_handler = cleanup->handler_orig;
/* Don't restore our input handler in readline yet. That would make
readline prep the terminal (putting it in raw mode), while the
gdb_readline_wrapper_result = NULL;
gdb_readline_wrapper_done = 0;
+ ui->secondary_prompt_depth--;
+ gdb_assert (ui->secondary_prompt_depth >= 0);
after_char_processing_hook = saved_after_char_processing_hook;
saved_after_char_processing_hook = NULL;
char *
gdb_readline_wrapper (const char *prompt)
{
+ struct ui *ui = current_ui;
struct cleanup *back_to;
struct gdb_readline_wrapper_cleanup *cleanup;
char *retval;
- cleanup = xmalloc (sizeof (*cleanup));
- cleanup->handler_orig = input_handler;
- input_handler = gdb_readline_wrapper_line;
+ cleanup = XNEW (struct gdb_readline_wrapper_cleanup);
+ cleanup->handler_orig = ui->input_handler;
+ ui->input_handler = gdb_readline_wrapper_line;
- cleanup->already_prompted_orig = rl_already_prompted;
+ if (ui->command_editing)
+ cleanup->already_prompted_orig = rl_already_prompted;
+ else
+ cleanup->already_prompted_orig = 0;
cleanup->target_is_async_orig = target_is_async_p ();
+ ui->secondary_prompt_depth++;
back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup);
+ /* Processing events may change the current UI. */
+ scoped_restore save_ui = make_scoped_restore (¤t_ui);
+
if (cleanup->target_is_async_orig)
target_async (0);
- /* Display our prompt and prevent double prompt display. */
- display_gdb_prompt (prompt);
- rl_already_prompted = 1;
+ /* Display our prompt and prevent double prompt display. Don't pass
+ down a NULL prompt, since that has special meaning for
+ display_gdb_prompt -- it indicates a request to print the primary
+ prompt, while we want a secondary prompt here. */
+ display_gdb_prompt (prompt != NULL ? prompt : "");
+ if (ui->command_editing)
+ rl_already_prompted = 1;
if (after_char_processing_hook)
(*after_char_processing_hook) ();
struct cleanup *old_chain;
local_history_filename
- = xstrprintf ("%s-gdb%d~", history_filename, getpid ());
+ = xstrprintf ("%s-gdb%ld~", history_filename, (long) getpid ());
old_chain = make_cleanup (xfree, local_history_filename);
ret = rename (history_filename, local_history_filename);
do_cleanups (old_chain);
}
-/* Read one line from the command input stream `instream'
- into the local static buffer `linebuffer' (whose current length
- is `linelength').
- The buffer is made bigger as necessary.
- Returns the address of the start of the line.
+/* Read one line from the command input stream `instream' into a local
+ static buffer. The buffer is made bigger as necessary. Returns
+ the address of the start of the line.
NULL is returned for end of file.
- *If* the instream == stdin & stdin is a terminal, the line read
- is copied into the file line saver (global var char *line,
- length linesize) so that it can be duplicated.
+ *If* input is from an interactive stream (stdin), the line read is
+ copied into the global 'saved_command_line' so that it can be
+ repeated.
- This routine either uses fancy command line editing or
- simple input as the user has requested. */
+ This routine either uses fancy command line editing or simple input
+ as the user has requested. */
char *
-command_line_input (const char *prompt_arg, int repeat, char *annotation_suffix)
+command_line_input (const char *prompt_arg, int repeat,
+ const char *annotation_suffix)
{
- static char *linebuffer = 0;
- static unsigned linelength = 0;
+ static struct buffer cmd_line_buffer;
+ static int cmd_line_buffer_initialized;
+ struct ui *ui = current_ui;
const char *prompt = prompt_arg;
- char *p;
- char *p1;
- char *rl;
- char *nline;
- char got_eof = 0;
+ char *cmd;
+ int from_tty = ui->instream == ui->stdin_stream;
/* The annotation suffix must be non-NULL. */
if (annotation_suffix == NULL)
annotation_suffix = "";
- if (annotation_level > 1 && instream == stdin)
+ if (from_tty && annotation_level > 1)
{
char *local_prompt;
- local_prompt = alloca ((prompt == NULL ? 0 : strlen (prompt))
- + strlen (annotation_suffix) + 40);
+ local_prompt
+ = (char *) alloca ((prompt == NULL ? 0 : strlen (prompt))
+ + strlen (annotation_suffix) + 40);
if (prompt == NULL)
local_prompt[0] = '\0';
else
prompt = local_prompt;
}
- if (linebuffer == 0)
+ if (!cmd_line_buffer_initialized)
{
- linelength = 80;
- linebuffer = (char *) xmalloc (linelength);
+ buffer_init (&cmd_line_buffer);
+ cmd_line_buffer_initialized = 1;
}
- p = linebuffer;
+ /* Starting a new command line. */
+ cmd_line_buffer.used_size = 0;
- /* Control-C quits instantly if typed while in this loop
- since it should not wait until the user types a newline. */
- immediate_quit++;
- QUIT;
#ifdef STOP_SIGNAL
if (job_control)
signal (STOP_SIGNAL, handle_stop_sig);
while (1)
{
+ char *rl;
+
/* Make sure that all output has been output. Some machines may
let you get away with leaving out some of the gdb_flush, but
not all. */
if (source_file_name != NULL)
++source_line_number;
- if (annotation_level > 1 && instream == stdin)
+ if (from_tty && annotation_level > 1)
{
puts_unfiltered ("\n\032\032pre-");
puts_unfiltered (annotation_suffix);
}
/* Don't use fancy stuff if not talking to stdin. */
- if (deprecated_readline_hook && input_from_terminal_p ())
+ if (deprecated_readline_hook
+ && from_tty
+ && input_interactive_p (current_ui))
{
rl = (*deprecated_readline_hook) (prompt);
}
- else if (command_editing_p && input_from_terminal_p ())
+ else if (command_editing_p
+ && from_tty
+ && input_interactive_p (current_ui))
{
rl = gdb_readline_wrapper (prompt);
}
else
{
- rl = gdb_readline (prompt);
- }
-
- if (annotation_level > 1 && instream == stdin)
- {
- puts_unfiltered ("\n\032\032post-");
- puts_unfiltered (annotation_suffix);
- puts_unfiltered ("\n");
+ rl = gdb_readline_no_editing (prompt);
}
- if (!rl || rl == (char *) EOF)
+ cmd = handle_line_of_input (&cmd_line_buffer, rl,
+ repeat, annotation_suffix);
+ if (cmd == (char *) EOF)
{
- got_eof = 1;
+ cmd = NULL;
break;
}
- if (strlen (rl) + 1 + (p - linebuffer) > linelength)
- {
- linelength = strlen (rl) + 1 + (p - linebuffer);
- nline = (char *) xrealloc (linebuffer, linelength);
- p += nline - linebuffer;
- linebuffer = nline;
- }
- p1 = rl;
- /* Copy line. Don't copy null at end. (Leaves line alone
- if this was just a newline). */
- while (*p1)
- *p++ = *p1++;
-
- xfree (rl); /* Allocated in readline. */
-
- if (p == linebuffer || *(p - 1) != '\\')
+ if (cmd != NULL)
break;
- p--; /* Put on top of '\'. */
+ /* Got partial input. I.e., got a line that ends with a
+ continuation character (backslash). Suppress printing the
+ prompt again. */
prompt = NULL;
}
if (job_control)
signal (STOP_SIGNAL, SIG_DFL);
#endif
- immediate_quit--;
-
- if (got_eof)
- return NULL;
-#define SERVER_COMMAND_LENGTH 7
- server_command =
- (p - linebuffer > SERVER_COMMAND_LENGTH)
- && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0;
- if (server_command)
- {
- /* Note that we don't set `line'. Between this and the check in
- dont_repeat, this insures that repeating will still do the
- right thing. */
- *p = '\0';
- return linebuffer + SERVER_COMMAND_LENGTH;
- }
-
- /* Do history expansion if that is wished. */
- if (history_expansion_p && instream == stdin
- && ISATTY (instream))
- {
- char *history_value;
- int expanded;
-
- *p = '\0'; /* Insert null now. */
- expanded = history_expand (linebuffer, &history_value);
- if (expanded)
- {
- /* Print the changes. */
- printf_unfiltered ("%s\n", history_value);
-
- /* If there was an error, call this function again. */
- if (expanded < 0)
- {
- xfree (history_value);
- return command_line_input (prompt, repeat,
- annotation_suffix);
- }
- if (strlen (history_value) > linelength)
- {
- linelength = strlen (history_value) + 1;
- linebuffer = (char *) xrealloc (linebuffer, linelength);
- }
- strcpy (linebuffer, history_value);
- p = linebuffer + strlen (linebuffer);
- }
- xfree (history_value);
- }
-
- /* If we just got an empty line, and that is supposed to repeat the
- previous command, return the value in the global buffer. */
- if (repeat && p == linebuffer)
- return saved_command_line;
- for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++);
- if (repeat && !*p1)
- return saved_command_line;
-
- *p = 0;
-
- /* Add line to history if appropriate. */
- if (*linebuffer && input_from_terminal_p ())
- gdb_add_history (linebuffer);
-
- /* Save into global buffer if appropriate. */
- if (repeat)
- {
- if (linelength > saved_command_line_size)
- {
- saved_command_line = xrealloc (saved_command_line, linelength);
- saved_command_line_size = linelength;
- }
- strcpy (saved_command_line, linebuffer);
- return saved_command_line;
- }
-
- return linebuffer;
+ return cmd;
}
\f
/* Print the GDB banner. */
/* Second line is a copyright notice. */
fprintf_filtered (stream,
- "Copyright (C) 2015 Free Software Foundation, Inc.\n");
+ "Copyright (C) 2017 Free Software Foundation, Inc.\n");
/* Following the copyright is a brief statement that the program is
free software, that users are free to copy and change it on
static int
kill_or_detach (struct inferior *inf, void *args)
{
- struct qt_args *qt = args;
+ struct qt_args *qt = (struct qt_args *) args;
struct thread_info *thread;
if (inf->pid == 0)
static int
print_inferior_quit_action (struct inferior *inf, void *arg)
{
- struct ui_file *stb = arg;
+ struct ui_file *stb = (struct ui_file *) arg;
if (inf->pid == 0)
return 0;
int
quit_confirm (void)
{
- struct ui_file *stb;
- struct cleanup *old_chain;
- char *str;
- int qr;
-
/* Don't even ask if we're only debugging a core file inferior. */
if (!have_live_inferiors ())
return 1;
/* Build the query string as a single string. */
- stb = mem_fileopen ();
- old_chain = make_cleanup_ui_file_delete (stb);
+ string_file stb;
- fprintf_filtered (stb, _("A debugging session is active.\n\n"));
- iterate_over_inferiors (print_inferior_quit_action, stb);
- fprintf_filtered (stb, _("\nQuit anyway? "));
+ stb.puts (_("A debugging session is active.\n\n"));
+ iterate_over_inferiors (print_inferior_quit_action, &stb);
+ stb.puts (_("\nQuit anyway? "));
- str = ui_file_xstrdup (stb, NULL);
- make_cleanup (xfree, str);
+ return query ("%s", stb.c_str ());
+}
- qr = query ("%s", str);
- do_cleanups (old_chain);
- return qr;
+/* Prepare to exit GDB cleanly by undoing any changes made to the
+ terminal so that we leave the terminal in the state we acquired it. */
+
+static void
+undo_terminal_modifications_before_exit (void)
+{
+ struct ui *saved_top_level = current_ui;
+
+ target_terminal_ours ();
+
+ current_ui = main_ui;
+
+#if defined(TUI)
+ tui_disable ();
+#endif
+ gdb_disable_readline ();
+
+ current_ui = saved_top_level;
}
+
/* Quit without asking for confirmation. */
void
-quit_force (char *args, int from_tty)
+quit_force (int *exit_arg, int from_tty)
{
int exit_code = 0;
struct qt_args qt;
+ undo_terminal_modifications_before_exit ();
+
/* An optional expression may be used to cause gdb to terminate with the
value of that expression. */
- if (args)
- {
- struct value *val = parse_and_eval (args);
-
- exit_code = (int) value_as_long (val);
- }
+ if (exit_arg)
+ exit_code = *exit_arg;
else if (return_child_result)
exit_code = return_child_result_value;
- qt.args = args;
+ qt.args = NULL;
qt.from_tty = from_tty;
/* We want to handle any quit errors and exit regardless. */
/* Save the history information if it is appropriate to do so. */
TRY
{
- if (write_history_p && history_filename
- && input_from_terminal_p ())
- gdb_safe_append_history ();
+ if (write_history_p && history_filename)
+ {
+ struct ui *ui;
+ int save = 0;
+
+ /* History is currently shared between all UIs. If there's
+ any UI with a terminal, save history. */
+ ALL_UIS (ui)
+ {
+ if (input_interactive_p (ui))
+ {
+ save = 1;
+ break;
+ }
+ }
+
+ if (save)
+ gdb_safe_append_history ();
+ }
}
CATCH (ex, RETURN_MASK_ALL)
{
exit (exit_code);
}
-/* Returns whether GDB is running on a terminal and input is
- currently coming from that terminal. */
+/* The value of the "interactive-mode" setting. */
+static enum auto_boolean interactive_mode = AUTO_BOOLEAN_AUTO;
+
+/* Implement the "show interactive-mode" option. */
+
+static void
+show_interactive_mode (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c,
+ const char *value)
+{
+ if (interactive_mode == AUTO_BOOLEAN_AUTO)
+ fprintf_filtered (file, "Debugger's interactive mode "
+ "is %s (currently %s).\n",
+ value, input_interactive_p (current_ui) ? "on" : "off");
+ else
+ fprintf_filtered (file, "Debugger's interactive mode is %s.\n", value);
+}
+
+/* Returns whether GDB is running on an interactive terminal. */
int
-input_from_terminal_p (void)
+input_interactive_p (struct ui *ui)
{
if (batch_flag)
return 0;
- if (gdb_has_a_terminal () && instream == stdin)
- return 1;
+ if (interactive_mode != AUTO_BOOLEAN_AUTO)
+ return interactive_mode == AUTO_BOOLEAN_TRUE;
- /* If INSTREAM is unset, and we are not in a user command, we
- must be in Insight. That's like having a terminal, for our
- purposes. */
- if (instream == NULL && !in_user_command)
- return 1;
-
- return 0;
+ return ui->input_interactive_p;
}
\f
static void
fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value);
}
+/* "set editing" command. */
+
+static void
+set_editing (char *args, int from_tty, struct cmd_list_element *c)
+{
+ change_line_handler (set_editing_cmd_var);
+ /* Update the control variable so that MI's =cmd-param-changed event
+ shows the correct value. */
+ set_editing_cmd_var = current_ui->command_editing;
+}
+
static void
-show_async_command_editing_p (struct ui_file *file, int from_tty,
- struct cmd_list_element *c, const char *value)
+show_editing (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file, _("Editing of command lines as "
"they are typed is %s.\n"),
- value);
+ current_ui->command_editing ? _("on") : _("off"));
}
static void
static void
init_main (void)
{
+ struct cmd_list_element *c;
+
/* Initialize the prompt to a simple "(gdb) " prompt or to whatever
the DEFAULT_PROMPT is. */
set_prompt (DEFAULT_PROMPT);
- /* Set things up for annotation_level > 1, if the user ever decides
- to use it. */
- async_annotation_suffix = "prompt";
-
/* Set the important stuff up for command editing. */
command_editing_p = 1;
history_expansion_p = 0;
/* Setup important stuff for command line editing. */
rl_completion_word_break_hook = gdb_completion_word_break_characters;
- rl_completion_entry_function = readline_line_completion_function;
- rl_completer_word_break_characters = default_word_break_characters ();
+ rl_attempted_completion_function = gdb_rl_attempted_completion_function;
+ set_rl_completer_word_break_characters (default_word_break_characters ());
rl_completer_quote_characters = get_gdb_completer_quote_characters ();
rl_completion_display_matches_hook = cli_display_match_list;
rl_readline_name = "gdb";
hitting return."));
add_setshow_boolean_cmd ("editing", class_support,
- &async_command_editing_p, _("\
+ &set_editing_cmd_var, _("\
Set editing of command lines as they are typed."), _("\
Show editing of command lines as they are typed."), _("\
Use \"on\" to enable the editing, and \"off\" to disable it.\n\
Without an argument, command line editing is enabled. To edit, use\n\
EMACS-like or VI-like commands like control-P or ESC."),
- set_async_editing_command,
- show_async_command_editing_p,
+ set_editing,
+ show_editing,
&setlist, &showlist);
add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\
set_gdb_datadir, show_gdb_datadir,
&setlist,
&showlist);
+
+ add_setshow_auto_boolean_cmd ("interactive-mode", class_support,
+ &interactive_mode, _("\
+Set whether GDB's standard input is a terminal."), _("\
+Show whether GDB's standard input is a terminal."), _("\
+If on, GDB assumes that standard input is a terminal. In practice, it\n\
+means that GDB should wait for the user to answer queries associated to\n\
+commands entered at the command prompt. If off, GDB assumes that standard\n\
+input is not a terminal, and uses the default answer to all queries.\n\
+If auto (the default), determine which mode to use based on the standard\n\
+input settings."),
+ NULL,
+ show_interactive_mode,
+ &setlist, &showlist);
+
+ c = add_cmd ("new-ui", class_support, new_ui_command, _("\
+Create a new UI. It takes two arguments:\n\
+The first argument is the name of the interpreter to run.\n\
+The second argument is the terminal the UI runs on.\n"), &cmdlist);
+ set_cmd_completer (c, interpreter_completer);
}
void
projects / deliverable / binutils-gdb.git / blobdiff