/* input.c -- character input functions for readline. */
-/* Copyright (C) 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1994-2010 Free Software Foundation, Inc.
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
- The GNU Readline Library 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, or
+ Readline 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 3 of the License, or
(at your option) any later version.
- The GNU Readline Library is distributed in the hope that it will be
- useful, but WITHOUT ANY WARRANTY; without even the implied warranty
- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ Readline is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
#define READLINE_LIBRARY
+#if defined (__TANDEM)
+# include <floss.h>
+#endif
+
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
# include "ansi_stdlib.h"
#endif /* HAVE_STDLIB_H */
-#if defined (HAVE_SELECT)
-# if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
-# include <sys/time.h>
-# endif
-#endif /* HAVE_SELECT */
-#if defined (HAVE_SYS_SELECT_H)
-# include <sys/select.h>
-#endif
+#include "posixselect.h"
#if defined (FIONREAD_IN_SYS_IOCTL)
# include <sys/ioctl.h>
static int rl_get_char PARAMS((int *));
static int rl_gather_tyi PARAMS((void));
+#if defined (_WIN32) && !defined (__CYGWIN__)
+
+/* 'isatty' in the Windows runtime returns non-zero for every
+ character device, including the null device. Repair that. */
+#include <io.h>
+#define WIN32_LEAN_AND_MEAN 1
+#include <windows.h>
+
+int w32_isatty (int fd)
+{
+ if (_isatty(fd))
+ {
+ HANDLE h = (HANDLE) _get_osfhandle (fd);
+ DWORD ignored;
+
+ if (h == INVALID_HANDLE_VALUE)
+ {
+ errno = EBADF;
+ return 0;
+ }
+ if (GetConsoleMode (h, &ignored) != 0)
+ return 1;
+ }
+ errno = ENOTTY;
+ return 0;
+}
+
+#define isatty(x) w32_isatty(x)
+#endif
+
/* **************************************************************** */
/* */
/* Character Input Buffering */
return (0);
*key = ibuffer[pop_index++];
-
+#if 0
if (pop_index >= ibuffer_len)
+#else
+ if (pop_index > ibuffer_len)
+#endif
pop_index = 0;
return (1);
{
pop_index--;
if (pop_index < 0)
- pop_index = ibuffer_len - 1;
+ pop_index = ibuffer_len;
ibuffer[pop_index] = key;
return (1);
}
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). */
{
int tty;
register int tem, result;
- int chars_avail;
+ int chars_avail, k;
char input;
#if defined(HAVE_SELECT)
fd_set readfds, exceptfds;
struct timeval timeout;
#endif
+ chars_avail = 0;
tty = fileno (rl_instream);
#if defined (HAVE_SELECT)
FD_ZERO (&exceptfds);
FD_SET (tty, &readfds);
FD_SET (tty, &exceptfds);
- timeout.tv_sec = 0;
- timeout.tv_usec = _keyboard_input_timeout;
+ USEC_TO_TIMEVAL (_keyboard_input_timeout, timeout);
result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout);
if (result <= 0)
return 0; /* Nothing to read. */
fcntl (tty, F_SETFL, tem);
if (chars_avail == -1 && errno == EAGAIN)
return 0;
+ if (chars_avail == 0) /* EOF */
+ {
+ rl_stuff_char (EOF);
+ return (0);
+ }
}
#endif /* O_NDELAY */
+#if defined (__MINGW32__)
+ /* Use getch/_kbhit to check for available console input, in the same way
+ that we read it normally. */
+ chars_avail = isatty (tty) ? _kbhit () : 0;
+ result = 0;
+#endif
+
/* If there's nothing available, don't waste time trying to read
something. */
if (chars_avail <= 0)
if (result != -1)
{
while (chars_avail--)
- rl_stuff_char ((*rl_getc_function) (rl_instream));
+ {
+ RL_CHECK_SIGNALS ();
+ k = (*rl_getc_function) (rl_instream);
+ if (rl_stuff_char (k) == 0)
+ break; /* some problem; no more room */
+ if (k == NEWLINE || k == RETURN)
+ break;
+ }
}
else
{
int o;
o = _keyboard_input_timeout;
- if (u > 0)
+ if (u >= 0)
_keyboard_input_timeout = u;
return (o);
}
return (chars_avail);
#endif
+#endif
+
+#if defined (__MINGW32__)
+ if (isatty (tty))
+ return (_kbhit ());
#endif
return 0;
string[i] = '\0';
rl_insert_text (string);
- free (string);
+ xfree (string);
}
/* Add KEY to the buffer of characters to be read. Returns 1 if the
RL_SETSTATE (RL_STATE_INPUTPENDING);
}
ibuffer[push_index++] = key;
+#if 0
if (push_index >= ibuffer_len)
+#else
+ if (push_index > ibuffer_len)
+#endif
push_index = 0;
return 1;
/* If the user has an event function, then call it periodically. */
if (rl_event_hook)
{
- while (rl_event_hook && rl_get_char (&c) == 0)
+ while (rl_event_hook)
{
- (*rl_event_hook) ();
- if (rl_done) /* XXX - experimental */
- return ('\n');
if (rl_gather_tyi () < 0) /* XXX - EIO */
{
rl_done = 1;
return ('\n');
}
+ RL_CHECK_SIGNALS ();
+ if (rl_get_char (&c) != 0)
+ break;
+ if (rl_done) /* XXX - experimental */
+ return ('\n');
+ (*rl_event_hook) ();
}
}
else
{
if (rl_get_char (&c) == 0)
c = (*rl_getc_function) (rl_instream);
+ RL_CHECK_SIGNALS ();
}
}
while (1)
{
+ RL_CHECK_SIGNALS ();
+
+#if defined (__MINGW32__)
+ /* Use _getch to make sure we call the function from MS runtime,
+ even if some curses library is linked in. */
+ if (isatty (fileno (stream)))
+ return (_getch ());
+#endif
result = read (fileno (stream), &c, sizeof (unsigned char));
if (result == sizeof (unsigned char))
this is simply an interrupted system call to read ().
Otherwise, some error ocurred, also signifying EOF. */
if (errno != EINTR)
- return (EOF);
+ return (RL_ISSTATE (RL_STATE_READCMD) ? READERR : EOF);
}
}
char *mbchar;
int size;
{
- int mb_len = 0;
+ int mb_len, c;
size_t mbchar_bytes_length;
wchar_t wc;
mbstate_t ps, ps_back;
memset(&ps, 0, sizeof (mbstate_t));
memset(&ps_back, 0, sizeof (mbstate_t));
-
+
+ mb_len = 0;
while (mb_len < size)
{
RL_SETSTATE(RL_STATE_MOREINPUT);
- mbchar[mb_len++] = rl_read_key ();
+ c = rl_read_key ();
RL_UNSETSTATE(RL_STATE_MOREINPUT);
+ if (c < 0)
+ break;
+
+ mbchar[mb_len++] = c;
+
mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps);
if (mbchar_bytes_length == (size_t)(-1))
break; /* invalid byte sequence for the current locale */
ps = ps_back;
continue;
}
+ else if (mbchar_bytes_length == 0)
+ {
+ mbchar[0] = '\0'; /* null wide character */
+ mb_len = 1;
+ break;
+ }
else if (mbchar_bytes_length > (size_t)(0))
break;
}
}
/* Read a multibyte-character string whose first character is FIRST into
- the buffer MB of length MBLEN. Returns the last character read, which
+ the buffer MB of length MLEN. Returns the last character read, which
may be FIRST. Used by the search functions, among others. Very similar
to _rl_read_mbchar. */
int
-_rl_read_mbstring (first, mb, mblen)
+_rl_read_mbstring (first, mb, mlen)
int first;
char *mb;
- int mblen;
+ int mlen;
{
int i, c;
mbstate_t ps;
c = first;
- memset (mb, 0, mblen);
- for (i = 0; i < mblen; i++)
+ memset (mb, 0, mlen);
+ for (i = 0; c >= 0 && i < mlen; i++)
{
mb[i] = (char)c;
memset (&ps, 0, sizeof (mbstate_t));