/* TUI support I/O functions.
- Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
- Foundation, Inc.
+ Copyright (C) 1998-2014 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
-#include "terminal.h"
#include "target.h"
#include "event-loop.h"
#include "event-top.h"
#include "command.h"
#include "top.h"
-#include "readline/readline.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
#include "tui/tui-io.h"
#include "cli-out.h"
#include <fcntl.h>
#include <signal.h>
-#include <stdio.h>
+#include "filestuff.h"
-#ifdef HAVE_NCURSES_H
-#include <ncurses.h>
-#else
-#ifdef HAVE_CURSES_H
-#include <curses.h>
-#endif
-#endif
+#include "gdb_curses.h"
+
+/* This redefines CTRL if it is not already defined, so it must come
+ after terminal state releated include files like <term.h> and
+ "gdb_curses.h". */
+#include "readline/readline.h"
int
key_is_start_sequence (int ch)
|| (ch == KEY_LEFT) || (ch == KEY_RIGHT)
|| (ch == KEY_UP) || (ch == KEY_DOWN)
|| (ch == KEY_SF) || (ch == KEY_SR)
- || (ch == (int)'\f') || key_is_start_sequence (ch));
+ || (ch == (int)'\f')
+ || key_is_start_sequence (ch));
}
/* Use definition from readline 4.3. */
#undef CTRL_CHAR
-#define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0))
+#define CTRL_CHAR(c) \
+ ((c) < control_character_threshold && (((c) & 0x80) == 0))
/* This file controls the IO interactions between gdb and curses.
When the TUI is enabled, gdb has two modes a curses and a standard
mode.
- In curses mode, the gdb outputs are made in a curses command window.
- For this, the gdb_stdout and gdb_stderr are redirected to the specific
- ui_file implemented by TUI. The output is handled by tui_puts().
- The input is also controlled by curses with tui_getc(). The readline
- library uses this function to get its input. Several readline hooks
- are installed to redirect readline output to the TUI (see also the
- note below).
+ In curses mode, the gdb outputs are made in a curses command
+ window. For this, the gdb_stdout and gdb_stderr are redirected to
+ the specific ui_file implemented by TUI. The output is handled by
+ tui_puts(). The input is also controlled by curses with
+ tui_getc(). The readline library uses this function to get its
+ input. Several readline hooks are installed to redirect readline
+ output to the TUI (see also the note below).
In normal mode, the gdb outputs are restored to their origin, that
is as if TUI is not used. Readline also uses its original getc()
function with stdin.
- Note SCz/2001-07-21: the current readline is not clean in its management of
- the output. Even if we install a redisplay handler, it sometimes writes on
- a stdout file. It is important to redirect every output produced by
- readline, otherwise the curses window will be garbled. This is implemented
- with a pipe that TUI reads and readline writes to. A gdb input handler
- is created so that reading the pipe is handled automatically.
- This will probably not work on non-Unix platforms. The best fix is
- to make readline clean enougth so that is never write on stdout.
-
- Note SCz/2002-09-01: we now use more readline hooks and it seems that
- with them we don't need the pipe anymore (verified by creating the pipe
- and closing its end so that write causes a SIGPIPE). The old pipe code
- is still there and can be conditionally removed by
+ Note SCz/2001-07-21: the current readline is not clean in its
+ management of the output. Even if we install a redisplay handler,
+ it sometimes writes on a stdout file. It is important to redirect
+ every output produced by readline, otherwise the curses window will
+ be garbled. This is implemented with a pipe that TUI reads and
+ readline writes to. A gdb input handler is created so that reading
+ the pipe is handled automatically. This will probably not work on
+ non-Unix platforms. The best fix is to make readline clean enougth
+ so that is never write on stdout.
+
+ Note SCz/2002-09-01: we now use more readline hooks and it seems
+ that with them we don't need the pipe anymore (verified by creating
+ the pipe and closing its end so that write causes a SIGPIPE). The
+ old pipe code is still there and can be conditionally removed by
#undef TUI_USE_PIPE_FOR_READLINE. */
/* For gdb 5.3, prefer to continue the pipe hack as a backup wheel. */
+#ifdef HAVE_PIPE
#define TUI_USE_PIPE_FOR_READLINE
-/*#undef TUI_USE_PIPE_FOR_READLINE*/
+#endif
+/* #undef TUI_USE_PIPE_FOR_READLINE */
/* TUI output files. */
static struct ui_file *tui_stdout;
struct ui_out *tui_old_uiout;
/* Readline previous hooks. */
-static Function *tui_old_rl_getc_function;
-static VFunction *tui_old_rl_redisplay_function;
-static VFunction *tui_old_rl_prep_terminal;
-static VFunction *tui_old_rl_deprep_terminal;
-static int tui_old_readline_echoing_p;
+static rl_getc_func_t *tui_old_rl_getc_function;
+static rl_voidfunc_t *tui_old_rl_redisplay_function;
+static rl_vintfunc_t *tui_old_rl_prep_terminal;
+static rl_voidfunc_t *tui_old_rl_deprep_terminal;
+static int tui_old_rl_echoing_p;
/* Readline output stream.
Should be removed when readline is clean. */
}
getyx (w, TUI_CMD_WIN->detail.command_info.cur_line,
TUI_CMD_WIN->detail.command_info.curch);
- TUI_CMD_WIN->detail.command_info.start_line = TUI_CMD_WIN->detail.command_info.cur_line;
+ TUI_CMD_WIN->detail.command_info.start_line
+ = TUI_CMD_WIN->detail.command_info.cur_line;
/* We could defer the following. */
wrefresh (w);
int start_line;
/* Detect when we temporarily left SingleKey and now the readline
- edit buffer is empty, automatically restore the SingleKey mode. */
- if (tui_current_key_mode == TUI_ONE_COMMAND_MODE && rl_end == 0)
+ edit buffer is empty, automatically restore the SingleKey
+ mode. The restore must only be done if the command has finished.
+ The command could call prompt_for_continue and we must not
+ restore SingleKey so that the prompt and normal keymap are used. */
+ if (tui_current_key_mode == TUI_ONE_COMMAND_MODE && rl_end == 0
+ && immediate_quit == 0)
tui_set_key_mode (TUI_SINGLE_KEY_MODE);
if (tui_current_key_mode == TUI_SINGLE_KEY_MODE)
fflush(stdout);
}
-/* Readline callback to prepare the terminal. It is called once
- each time we enter readline. Terminal is already setup in curses mode. */
+/* Readline callback to prepare the terminal. It is called once each
+ time we enter readline. Terminal is already setup in curses
+ mode. */
static void
tui_prep_terminal (int notused1)
{
(we can't use gdb_prompt() due to secondary prompts and can't use
rl_prompt because it points to an alloca buffer). */
xfree (tui_rl_saved_prompt);
- tui_rl_saved_prompt = xstrdup (rl_prompt);
+ tui_rl_saved_prompt = rl_prompt != NULL ? xstrdup (rl_prompt) : NULL;
}
-/* Readline callback to restore the terminal. It is called once
- each time we leave readline. There is nothing to do in curses mode. */
+/* Readline callback to restore the terminal. It is called once each
+ time we leave readline. There is nothing to do in curses mode. */
static void
tui_deprep_terminal (void)
{
/* Read readline output pipe and feed the command window with it.
Should be removed when readline is clean. */
static void
-tui_readline_output (int code, gdb_client_data data)
+tui_readline_output (int error, gdb_client_data data)
{
int size;
char buf[256];
are only interested in the basename, the portion following the
final slash. Otherwise, we return what we were passed.
- Comes from readline/complete.c */
-static char *
-printable_part (pathname)
- char *pathname;
+ Comes from readline/complete.c. */
+static const char *
+printable_part (const char *pathname)
{
- char *temp;
-
- temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL;
-#if defined (__MSDOS__)
- if (rl_filename_completion_desired && temp == 0 && isalpha (pathname[0]) && pathname[1] == ':')
- temp = pathname + 1;
-#endif
- return (temp ? ++temp : pathname);
+ return rl_filename_completion_desired ? lbasename (pathname) : pathname;
}
-/* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we
- are using it, check for and output a single character for `special'
- filenames. Return the number of characters we output. */
+/* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and
+ we are using it, check for and output a single character for
+ `special' filenames. Return the number of characters we
+ output. */
#define PUTX(c) \
do { \
} while (0)
static int
-print_filename (to_print, full_pathname)
- char *to_print, *full_pathname;
+print_filename (const char *to_print, const char *full_pathname)
{
int printed_len = 0;
- char *s;
+ const char *s;
for (s = to_print; *s; s++)
{
}
/* The user must press "y" or "n". Non-zero return means "y" pressed.
- Comes from readline/complete.c */
+ Comes from readline/complete.c. */
static int
-get_y_or_n ()
+get_y_or_n (void)
{
extern int _rl_abort_internal ();
int c;
Comes from readline/complete.c and modified to write in
the TUI command window using tui_putc/tui_puts. */
static void
-tui_rl_display_match_list (matches, len, max)
- char **matches;
- int len, max;
+tui_rl_display_match_list (char **matches, int len, int max)
{
typedef int QSFUNC (const void *, const void *);
- extern int _rl_qsort_string_compare (const void*, const void*);
+ extern int _rl_qsort_string_compare (const void *,
+ const void *);
extern int _rl_print_completions_horizontally;
int count, limit, printed_len;
int i, j, k, l;
- char *temp;
+ const char *temp;
/* Screen dimension correspond to the TUI command window. */
int screenwidth = TUI_CMD_WIN->generic.width;
/* If there are many items, then ask the user if she really wants to
- see them all. */
+ see them all. */
if (len >= rl_completion_query_items)
{
char msg[256];
- sprintf (msg, "\nDisplay all %d possibilities? (y or n)", len);
+ xsnprintf (msg, sizeof (msg),
+ "\nDisplay all %d possibilities? (y or n)", len);
tui_puts (msg);
if (get_y_or_n () == 0)
{
}
}
- /* How many items of MAX length can we fit in the screen window? */
+ /* How many items of MAX length can we fit in the screen window? */
max += 2;
limit = screenwidth / max;
if (limit != 1 && (limit * max == screenwidth))
limit--;
- /* Avoid a possible floating exception. If max > screenwidth,
- limit will be 0 and a divide-by-zero fault will result. */
+ /* Avoid a possible floating exception. If max > screenwidth, limit
+ will be 0 and a divide-by-zero fault will result. */
if (limit == 0)
limit = 1;
- /* How many iterations of the printing loop? */
+ /* How many iterations of the printing loop? */
count = (len + (limit - 1)) / limit;
/* Watch out for special case. If LEN is less than LIMIT, then
just do the inner printing loop.
- 0 < len <= limit implies count = 1. */
+ 0 < len <= limit implies count = 1. */
- /* Sort the items if they are not already sorted. */
+ /* Sort the items if they are not already sorted. */
if (rl_ignore_completion_duplicates == 0)
qsort (matches + 1, len, sizeof (char *),
(QSFUNC *)_rl_qsort_string_compare);
if (_rl_print_completions_horizontally == 0)
{
- /* Print the sorted items, up-and-down alphabetically, like ls. */
+ /* Print the sorted items, up-and-down alphabetically, like ls. */
for (i = 1; i <= count; i++)
{
for (j = 0, l = i; j < limit; j++)
}
else
{
- /* Print the sorted items, across alphabetically, like ls -x. */
+ /* Print the sorted items, across alphabetically, like ls -x. */
for (i = 1; matches[i]; i++)
{
temp = printable_part (matches[i]);
printed_len = print_filename (temp, matches[i]);
- /* Have we reached the end of this line? */
+ /* Have we reached the end of this line? */
if (matches[i+1])
{
if (i && (limit > 1) && (i % limit) == 0)
void
tui_setup_io (int mode)
{
- extern int readline_echoing_p;
-
+ extern int _rl_echoing_p;
+
if (mode)
{
/* Redirect readline to TUI. */
tui_old_rl_prep_terminal = rl_prep_term_function;
tui_old_rl_getc_function = rl_getc_function;
tui_old_rl_outstream = rl_outstream;
- tui_old_readline_echoing_p = readline_echoing_p;
+ tui_old_rl_echoing_p = _rl_echoing_p;
rl_redisplay_function = tui_redisplay_readline;
rl_deprep_term_function = tui_deprep_terminal;
rl_prep_term_function = tui_prep_terminal;
rl_getc_function = tui_getc;
- readline_echoing_p = 0;
+ _rl_echoing_p = 0;
rl_outstream = tui_rl_outstream;
rl_prompt = 0;
rl_completion_display_matches_hook = tui_rl_display_match_list;
/* Keep track of previous gdb output. */
tui_old_stdout = gdb_stdout;
tui_old_stderr = gdb_stderr;
- tui_old_uiout = uiout;
+ tui_old_uiout = current_uiout;
/* Reconfigure gdb output. */
gdb_stdout = tui_stdout;
gdb_stderr = tui_stderr;
gdb_stdlog = gdb_stdout; /* for moment */
gdb_stdtarg = gdb_stderr; /* for moment */
- uiout = tui_out;
+ gdb_stdtargerr = gdb_stderr; /* for moment */
+ current_uiout = tui_out;
/* Save tty for SIGCONT. */
savetty ();
gdb_stderr = tui_old_stderr;
gdb_stdlog = gdb_stdout; /* for moment */
gdb_stdtarg = gdb_stderr; /* for moment */
- uiout = tui_old_uiout;
+ gdb_stdtargerr = gdb_stderr; /* for moment */
+ current_uiout = tui_old_uiout;
/* Restore readline. */
rl_redisplay_function = tui_old_rl_redisplay_function;
rl_getc_function = tui_old_rl_getc_function;
rl_outstream = tui_old_rl_outstream;
rl_completion_display_matches_hook = 0;
- readline_echoing_p = tui_old_readline_echoing_p;
+ _rl_echoing_p = tui_old_rl_echoing_p;
rl_already_prompted = 0;
/* Save tty for SIGCONT. */
/* Initialize the IO for gdb in curses mode. */
void
-tui_initialize_io ()
+tui_initialize_io (void)
{
#ifdef SIGCONT
signal (SIGCONT, tui_cont_sig);
tui_stderr = tui_fileopen (stderr);
tui_out = tui_out_new (tui_stdout);
- /* Create the default UI. It is not created because we installed
- a init_ui_hook. */
- tui_old_uiout = uiout = cli_out_new (gdb_stdout);
+ /* Create the default UI. */
+ tui_old_uiout = cli_out_new (gdb_stdout);
#ifdef TUI_USE_PIPE_FOR_READLINE
- /* Temporary solution for readline writing to stdout:
- redirect readline output in a pipe, read that pipe and
- output the content in the curses command window. */
- if (pipe (tui_readline_pipe) != 0)
- {
- fprintf_unfiltered (gdb_stderr, "Cannot create pipe for readline");
- exit (1);
- }
+ /* Temporary solution for readline writing to stdout: redirect
+ readline output in a pipe, read that pipe and output the content
+ in the curses command window. */
+ if (gdb_pipe_cloexec (tui_readline_pipe) != 0)
+ error (_("Cannot create pipe for readline"));
+
tui_rl_outstream = fdopen (tui_readline_pipe[1], "w");
if (tui_rl_outstream == 0)
- {
- fprintf_unfiltered (gdb_stderr, "Cannot redirect readline output");
- exit (1);
- }
+ error (_("Cannot redirect readline output"));
+
setvbuf (tui_rl_outstream, (char*) NULL, _IOLBF, 0);
#ifdef O_NONBLOCK
#endif
}
-/* Get a character from the command window. This is called from the readline
- package. */
+/* Get a character from the command window. This is called from the
+ readline package. */
int
tui_getc (FILE *fp)
{
#ifdef TUI_USE_PIPE_FOR_READLINE
/* Flush readline output. */
- tui_readline_output (GDB_READABLE, 0);
+ tui_readline_output (0, 0);
#endif
ch = wgetch (w);
ch = tui_handle_resize_during_io (ch);
- /* The \n must be echoed because it will not be printed by readline. */
+ /* The \n must be echoed because it will not be printed by
+ readline. */
if (ch == '\n')
{
/* When hitting return with an empty input, gdb executes the last
}
if (key_is_command_char (ch))
- { /* Handle prev/next/up/down here */
+ { /* Handle prev/next/up/down here. */
ch = tui_dispatch_ctrl_char (ch);
}
TUI_CMD_WIN->detail.command_info.curch = 0;
if (ch == KEY_BACKSPACE)
return '\b';
-
+
+ if (async_command_editing_p && key_is_start_sequence (ch))
+ {
+ int ch_pending;
+
+ nodelay (w, TRUE);
+ ch_pending = wgetch (w);
+ nodelay (w, FALSE);
+
+ /* If we have pending input following a start sequence, call the stdin
+ event handler again because ncurses may have already read and stored
+ the input into its internal buffer, meaning that we won't get an stdin
+ event for it. If we don't compensate for this missed stdin event, key
+ sequences as Alt_F (^[f) will not behave promptly.
+
+ (We only compensates for the missed 2nd byte of a key sequence because
+ 2-byte sequences are by far the most commonly used. ncurses may have
+ buffered a larger, 3+-byte key sequence though it remains to be seen
+ whether it is useful to compensate for all the bytes of such
+ sequences.) */
+ if (ch_pending != ERR)
+ {
+ ungetch (ch_pending);
+ call_stdin_event_handler_again_p = 1;
+ }
+ }
+
return ch;
}
{
if (tui_win_resized ())
{
+ tui_resize_all ();
tui_refresh_all_win ();
dont_repeat ();
tui_set_win_resized_to (FALSE);
projects / deliverable / binutils-gdb.git / blobdiff