/* input.c -- character input functions for readline. */
-/* Copyright (C) 1994 Free Software Foundation, Inc.
+/* Copyright (C) 1994-2005 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.
59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#define READLINE_LIBRARY
+#if defined (__TANDEM)
+# include <floss.h>
+#endif
+
#if defined (HAVE_CONFIG_H)
# include <config.h>
#endif
/* System-specific feature definitions and include files. */
#include "rldefs.h"
+#include "rlmbutil.h"
/* Some standard library routines. */
#include "readline.h"
static int _keyboard_input_timeout = 100000; /* 0.1 seconds; it's in usec */
+static int ibuffer_space PARAMS((void));
+static int rl_get_char PARAMS((int *));
+static int rl_gather_tyi PARAMS((void));
+
/* **************************************************************** */
/* */
/* 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);
/* Stuff KEY into the *front* of the input buffer.
Returns non-zero if successful, zero if there is
no space left in the buffer. */
-static int
-rl_unget_char (key)
+int
+_rl_unget_char (key)
int key;
{
if (ibuffer_space ())
{
pop_index--;
if (pop_index < 0)
- pop_index = ibuffer_len - 1;
+ pop_index = ibuffer_len;
ibuffer[pop_index] = key;
return (1);
}
return (0);
}
-/* If a character is available to be read, then read it
- and stuff it into IBUFFER. Otherwise, just return. */
-static void
+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). */
+static int
rl_gather_tyi ()
{
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_SET (tty, &exceptfds);
timeout.tv_sec = 0;
timeout.tv_usec = _keyboard_input_timeout;
- if (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) <= 0)
- return; /* Nothing to read. */
+ result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout);
+ if (result <= 0)
+ return 0; /* Nothing to read. */
#endif
result = -1;
#if defined (FIONREAD)
+ errno = 0;
result = ioctl (tty, FIONREAD, &chars_avail);
+ if (result == -1 && errno == EIO)
+ return -1;
#endif
#if defined (O_NDELAY)
fcntl (tty, F_SETFL, tem);
if (chars_avail == -1 && errno == EAGAIN)
- return;
+ 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)
- return;
+ return 0;
tem = ibuffer_space ();
if (result != -1)
{
while (chars_avail--)
- rl_stuff_char ((*rl_getc_function) (rl_instream));
+ {
+ 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
{
if (chars_avail)
rl_stuff_char (input);
}
+
+ return 1;
}
int
int o;
o = _keyboard_input_timeout;
- if (u > 0)
+ if (u >= 0)
_keyboard_input_timeout = u;
return (o);
}
/* Is there input available to be read on the readline input file
- descriptor? Only works if the system has select(2) or FIONREAD. */
+ descriptor? Only works if the system has select(2) or FIONREAD.
+ Uses the value of _keyboard_input_timeout as the timeout; if another
+ readline function wants to specify a timeout and not leave it up to
+ the user, it should use _rl_input_queued(timeout_value_in_microseconds)
+ instead. */
int
_rl_input_available ()
{
fd_set readfds, exceptfds;
struct timeval timeout;
#endif
-#if defined(FIONREAD)
+#if !defined (HAVE_SELECT) && defined(FIONREAD)
int chars_avail;
#endif
int tty;
timeout.tv_sec = 0;
timeout.tv_usec = _keyboard_input_timeout;
return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0);
-#endif
+#else
#if defined (FIONREAD)
if (ioctl (tty, FIONREAD, &chars_avail) == 0)
return (chars_avail);
#endif
+#endif
+
+#if defined (__MINGW32__)
+ if (isatty (tty))
+ return (_kbhit ());
+#endif
+
return 0;
}
+int
+_rl_input_queued (t)
+ int t;
+{
+ int old_timeout, r;
+
+ old_timeout = rl_set_keyboard_input_timeout (t);
+ r = _rl_input_available ();
+ rl_set_keyboard_input_timeout (old_timeout);
+ return r;
+}
+
void
_rl_insert_typein (c)
int c;
char *string;
i = key = 0;
- string = xmalloc (ibuffer_len + 1);
+ string = (char *)xmalloc (ibuffer_len + 1);
string[i++] = (char) c;
while ((t = rl_get_char (&key)) &&
string[i++] = key;
if (t)
- rl_unget_char (key);
+ _rl_unget_char (key);
string[i] = '\0';
rl_insert_text (string);
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;
(*rl_event_hook) ();
if (rl_done) /* XXX - experimental */
return ('\n');
- rl_gather_tyi ();
+ if (rl_gather_tyi () < 0) /* XXX - EIO */
+ {
+ rl_done = 1;
+ return ('\n');
+ }
}
}
else
while (1)
{
+#if defined (__MINGW32__)
+ 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);
+ }
+}
+
+#if defined (HANDLE_MULTIBYTE)
+/* read multibyte char */
+int
+_rl_read_mbchar (mbchar, size)
+ char *mbchar;
+ int size;
+{
+ 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);
+ 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 */
+ else if (mbchar_bytes_length == (size_t)(-2))
+ {
+ /* shorted bytes */
+ 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;
+ }
+
+ return mb_len;
+}
+
+/* Read a multibyte-character string whose first character is FIRST into
+ 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, mlen)
+ int first;
+ char *mb;
+ int mlen;
+{
+ int i, c;
+ mbstate_t ps;
+
+ c = first;
+ memset (mb, 0, mlen);
+ for (i = 0; c >= 0 && i < mlen; i++)
+ {
+ mb[i] = (char)c;
+ memset (&ps, 0, sizeof (mbstate_t));
+ if (_rl_get_char_len (mb, &ps) == -2)
+ {
+ /* Read more for multibyte character */
+ RL_SETSTATE (RL_STATE_MOREINPUT);
+ c = rl_read_key ();
+ RL_UNSETSTATE (RL_STATE_MOREINPUT);
+ }
+ else
+ break;
}
+ return c;
}
+#endif /* HANDLE_MULTIBYTE */
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