aboutsummaryrefslogtreecommitdiff
path: root/readline/input.c
diff options
context:
space:
mode:
Diffstat (limited to 'readline/input.c')
-rw-r--r--readline/input.c110
1 files changed, 19 insertions, 91 deletions
diff --git a/readline/input.c b/readline/input.c
index bbb3947..7c74c99 100644
--- a/readline/input.c
+++ b/readline/input.c
@@ -1,6 +1,6 @@
/* input.c -- character input functions for readline. */
-/* Copyright (C) 1994-2013 Free Software Foundation, Inc.
+/* Copyright (C) 1994-2010 Free Software Foundation, Inc.
This file is part of the GNU Readline Library (Readline), a library
for reading lines of text with interactive input and history editing.
@@ -45,8 +45,6 @@
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
-#include <signal.h>
-
#include "posixselect.h"
#if defined (FIONREAD_IN_SYS_IOCTL)
@@ -80,13 +78,6 @@ extern int errno;
character input. */
rl_hook_func_t *rl_event_hook = (rl_hook_func_t *)NULL;
-/* A function to call if a read(2) is interrupted by a signal. */
-rl_hook_func_t *rl_signal_event_hook = (rl_hook_func_t *)NULL;
-
-/* A function to replace _rl_input_available for applications using the
- callback interface. */
-rl_hook_func_t *rl_input_available_hook = (rl_hook_func_t *)NULL;
-
rl_getc_func_t *rl_getc_function = rl_getc;
static int _keyboard_input_timeout = 100000; /* 0.1 seconds; it's in usec */
@@ -95,22 +86,6 @@ static int ibuffer_space PARAMS((void));
static int rl_get_char PARAMS((int *));
static int rl_gather_tyi PARAMS((void));
-/* Windows isatty returns true for every character device, including the null
- device, so we need to perform additional checks. */
-#if defined (_WIN32) && !defined (__CYGWIN__)
-#include <io.h>
-#define WIN32_LEAN_AND_MEAN 1
-#include <windows.h>
-
-int
-win32_isatty (int fd)
-{
- return (_isatty (fd) ? ((((long) (HANDLE) _get_osfhandle (fd)) & 3) == 3) : 0);
-}
-
-#define isatty(x) win32_isatty(x)
-#endif
-
/* **************************************************************** */
/* */
/* Character Input Buffering */
@@ -129,12 +104,6 @@ _rl_any_typein ()
return any_typein;
}
-int
-_rl_pushed_input_available ()
-{
- return (push_index != pop_index);
-}
-
/* Return the amount of space available in the buffer for stuffing
characters. */
static int
@@ -148,7 +117,7 @@ ibuffer_space ()
/* Get a key from the buffer of characters to be read.
Return the key in KEY.
- Result is non-zero if there was a key, or 0 if there wasn't. */
+ Result is KEY if there was a key, or 0 if there wasn't. */
static int
rl_get_char (key)
int *key;
@@ -185,6 +154,12 @@ _rl_unget_char (key)
return (0);
}
+int
+_rl_pushed_input_available ()
+{
+ return (push_index != pop_index);
+}
+
/* If a character is available to be read, then read it and stuff it into
IBUFFER. Otherwise, just return. Returns number of characters read
(0 if none available) and -1 on error (EIO). */
@@ -201,7 +176,6 @@ rl_gather_tyi ()
#endif
chars_avail = 0;
- input = 0;
tty = fileno (rl_instream);
#if defined (HAVE_SELECT)
@@ -221,8 +195,6 @@ rl_gather_tyi ()
result = ioctl (tty, FIONREAD, &chars_avail);
if (result == -1 && errno == EIO)
return -1;
- if (result == -1)
- chars_avail = 0;
#endif
#if defined (O_NDELAY)
@@ -319,9 +291,6 @@ _rl_input_available ()
#endif
int tty;
- if (rl_input_available_hook)
- return (*rl_input_available_hook) ();
-
tty = fileno (rl_instream);
#if defined (HAVE_SELECT)
@@ -440,7 +409,9 @@ rl_clear_pending_input ()
int
rl_read_key ()
{
- int c, r;
+ int c;
+
+ rl_key_sequence_length++;
if (rl_pending_input)
{
@@ -458,18 +429,14 @@ rl_read_key ()
{
while (rl_event_hook)
{
- if (rl_get_char (&c) != 0)
- break;
-
- if ((r = rl_gather_tyi ()) < 0) /* XXX - EIO */
+ if (rl_gather_tyi () < 0) /* XXX - EIO */
{
rl_done = 1;
return ('\n');
}
- else if (r > 0) /* read something */
- continue;
-
RL_CHECK_SIGNALS ();
+ if (rl_get_char (&c) != 0)
+ break;
if (rl_done) /* XXX - experimental */
return ('\n');
(*rl_event_hook) ();
@@ -479,7 +446,6 @@ rl_read_key ()
{
if (rl_get_char (&c) == 0)
c = (*rl_getc_function) (rl_instream);
-/* fprintf(stderr, "rl_read_key: calling RL_CHECK_SIGNALS: _rl_caught_signal = %d", _rl_caught_signal); */
RL_CHECK_SIGNALS ();
}
}
@@ -493,30 +459,16 @@ rl_getc (stream)
{
int result;
unsigned char c;
-#if defined (HAVE_PSELECT)
- sigset_t empty_set;
- fd_set readfds;
-#endif
while (1)
{
RL_CHECK_SIGNALS ();
- /* We know at this point that _rl_caught_signal == 0 */
-
#if defined (__MINGW32__)
if (isatty (fileno (stream)))
- return (_getch ()); /* "There is no error return." */
-#endif
- result = 0;
-#if defined (HAVE_PSELECT)
- sigemptyset (&empty_set);
- FD_ZERO (&readfds);
- FD_SET (fileno (stream), &readfds);
- result = pselect (fileno (stream) + 1, &readfds, NULL, NULL, NULL, &empty_set);
+ return (getch ());
#endif
- if (result >= 0)
- result = read (fileno (stream), &c, sizeof (unsigned char));
+ result = read (fileno (stream), &c, sizeof (unsigned char));
if (result == sizeof (unsigned char))
return (c);
@@ -553,35 +505,11 @@ rl_getc (stream)
#undef X_EWOULDBLOCK
#undef X_EAGAIN
-/* fprintf(stderr, "rl_getc: result = %d errno = %d\n", result, errno); */
-
-handle_error:
- /* If the error that we received was EINTR, then try again,
- this is simply an interrupted system call to read (). We allow
- the read to be interrupted if we caught SIGHUP, SIGTERM, or any
- of the other signals readline treats specially. If the
- application sets an event hook, call it for other signals.
- Otherwise (not EINTR), some error occurred, also signifying EOF. */
+ /* If the error that we received was SIGINT, then try again,
+ this is simply an interrupted system call to read ().
+ Otherwise, some error ocurred, also signifying EOF. */
if (errno != EINTR)
return (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF);
- /* fatal signals of interest */
- else if (_rl_caught_signal == SIGHUP || _rl_caught_signal == SIGTERM)
- return (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF);
- /* keyboard-generated signals of interest */
- else if (_rl_caught_signal == SIGINT || _rl_caught_signal == SIGQUIT)
- RL_CHECK_SIGNALS ();
- /* non-keyboard-generated signals of interest */
- else if (_rl_caught_signal == SIGWINCH)
- RL_CHECK_SIGNALS ();
- else if (_rl_caught_signal == SIGALRM
-#if defined (SIGVTALRM)
- || _rl_caught_signal == SIGVTALRM
-#endif
- )
- RL_CHECK_SIGNALS ();
-
- if (rl_signal_event_hook)
- (*rl_signal_event_hook) ();
}
}
generated by cgit v1.1 at 2024-11-22 05:09:13 +0000