/* input.c -- character input functions for readline. */
|
/* input.c -- character input functions for readline. */
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|
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/* Copyright (C) 1994-2005 Free Software Foundation, Inc.
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/* Copyright (C) 1994-2005 Free Software Foundation, Inc.
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|
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This file is part of the GNU Readline Library, a library for
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This file is part of the GNU Readline Library, a library for
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reading lines of text with interactive input and history editing.
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reading lines of text with interactive input and history editing.
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|
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The GNU Readline Library is free software; you can redistribute it
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The GNU Readline Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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and/or modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2, or
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as published by the Free Software Foundation; either version 2, or
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(at your option) any later version.
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(at your option) any later version.
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|
|
The GNU Readline Library is distributed in the hope that it will be
|
The GNU Readline Library is distributed in the hope that it will be
|
useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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|
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The GNU General Public License is often shipped with GNU software, and
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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
|
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,
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have a copy of the license, write to the Free Software Foundation,
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59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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#define READLINE_LIBRARY
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#define READLINE_LIBRARY
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|
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#if defined (__TANDEM)
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#if defined (__TANDEM)
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# include <floss.h>
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# include <floss.h>
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#endif
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#endif
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|
|
#if defined (HAVE_CONFIG_H)
|
#if defined (HAVE_CONFIG_H)
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# include <config.h>
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# include <config.h>
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#endif
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#endif
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|
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#include <sys/types.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <fcntl.h>
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#if defined (HAVE_SYS_FILE_H)
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#if defined (HAVE_SYS_FILE_H)
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# include <sys/file.h>
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# include <sys/file.h>
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#endif /* HAVE_SYS_FILE_H */
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#endif /* HAVE_SYS_FILE_H */
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|
|
#if defined (HAVE_UNISTD_H)
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#if defined (HAVE_UNISTD_H)
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# include <unistd.h>
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# include <unistd.h>
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#endif /* HAVE_UNISTD_H */
|
#endif /* HAVE_UNISTD_H */
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|
|
#if defined (HAVE_STDLIB_H)
|
#if defined (HAVE_STDLIB_H)
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# include <stdlib.h>
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# include <stdlib.h>
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#else
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#else
|
# include "ansi_stdlib.h"
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# include "ansi_stdlib.h"
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#endif /* HAVE_STDLIB_H */
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#endif /* HAVE_STDLIB_H */
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|
|
#if defined (HAVE_SELECT)
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#if defined (HAVE_SELECT)
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# if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
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# if !defined (HAVE_SYS_SELECT_H) || !defined (M_UNIX)
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# include <sys/time.h>
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# include <sys/time.h>
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# endif
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# endif
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#endif /* HAVE_SELECT */
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#endif /* HAVE_SELECT */
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#if defined (HAVE_SYS_SELECT_H)
|
#if defined (HAVE_SYS_SELECT_H)
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# include <sys/select.h>
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# include <sys/select.h>
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#endif
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#endif
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|
|
#if defined (FIONREAD_IN_SYS_IOCTL)
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#if defined (FIONREAD_IN_SYS_IOCTL)
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# include <sys/ioctl.h>
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# include <sys/ioctl.h>
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#endif
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#endif
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|
|
#include <stdio.h>
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#include <stdio.h>
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#include <errno.h>
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#include <errno.h>
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|
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#if !defined (errno)
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#if !defined (errno)
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extern int errno;
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extern int errno;
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#endif /* !errno */
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#endif /* !errno */
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|
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/* System-specific feature definitions and include files. */
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/* System-specific feature definitions and include files. */
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#include "rldefs.h"
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#include "rldefs.h"
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#include "rlmbutil.h"
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#include "rlmbutil.h"
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|
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/* Some standard library routines. */
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/* Some standard library routines. */
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#include "readline.h"
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#include "readline.h"
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|
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#include "rlprivate.h"
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#include "rlprivate.h"
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#include "rlshell.h"
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#include "rlshell.h"
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#include "xmalloc.h"
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#include "xmalloc.h"
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|
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/* What kind of non-blocking I/O do we have? */
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/* What kind of non-blocking I/O do we have? */
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#if !defined (O_NDELAY) && defined (O_NONBLOCK)
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#if !defined (O_NDELAY) && defined (O_NONBLOCK)
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# define O_NDELAY O_NONBLOCK /* Posix style */
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# define O_NDELAY O_NONBLOCK /* Posix style */
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#endif
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#endif
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|
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/* Non-null means it is a pointer to a function to run while waiting for
|
/* Non-null means it is a pointer to a function to run while waiting for
|
character input. */
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character input. */
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rl_hook_func_t *rl_event_hook = (rl_hook_func_t *)NULL;
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rl_hook_func_t *rl_event_hook = (rl_hook_func_t *)NULL;
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|
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rl_getc_func_t *rl_getc_function = rl_getc;
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rl_getc_func_t *rl_getc_function = rl_getc;
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|
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static int _keyboard_input_timeout = 100000; /* 0.1 seconds; it's in usec */
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static int _keyboard_input_timeout = 100000; /* 0.1 seconds; it's in usec */
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|
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static int ibuffer_space PARAMS((void));
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static int ibuffer_space PARAMS((void));
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static int rl_get_char PARAMS((int *));
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static int rl_get_char PARAMS((int *));
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static int rl_gather_tyi PARAMS((void));
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static int rl_gather_tyi PARAMS((void));
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|
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/* **************************************************************** */
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/* **************************************************************** */
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/* */
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/* */
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/* Character Input Buffering */
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/* Character Input Buffering */
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/* */
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/* */
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/* **************************************************************** */
|
/* **************************************************************** */
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|
|
static int pop_index, push_index;
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static int pop_index, push_index;
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static unsigned char ibuffer[512];
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static unsigned char ibuffer[512];
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static int ibuffer_len = sizeof (ibuffer) - 1;
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static int ibuffer_len = sizeof (ibuffer) - 1;
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|
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#define any_typein (push_index != pop_index)
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#define any_typein (push_index != pop_index)
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|
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int
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int
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_rl_any_typein ()
|
_rl_any_typein ()
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{
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{
|
return any_typein;
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return any_typein;
|
}
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}
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|
|
/* Return the amount of space available in the buffer for stuffing
|
/* Return the amount of space available in the buffer for stuffing
|
characters. */
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characters. */
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static int
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static int
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ibuffer_space ()
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ibuffer_space ()
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{
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{
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if (pop_index > push_index)
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if (pop_index > push_index)
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return (pop_index - push_index - 1);
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return (pop_index - push_index - 1);
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else
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else
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return (ibuffer_len - (push_index - pop_index));
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return (ibuffer_len - (push_index - pop_index));
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}
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}
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|
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/* Get a key from the buffer of characters to be read.
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/* Get a key from the buffer of characters to be read.
|
Return the key in KEY.
|
Return the key in KEY.
|
Result is KEY 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
|
static int
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rl_get_char (key)
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rl_get_char (key)
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int *key;
|
int *key;
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{
|
{
|
if (push_index == pop_index)
|
if (push_index == pop_index)
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return (0);
|
return (0);
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|
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*key = ibuffer[pop_index++];
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*key = ibuffer[pop_index++];
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|
|
if (pop_index >= ibuffer_len)
|
if (pop_index >= ibuffer_len)
|
pop_index = 0;
|
pop_index = 0;
|
|
|
return (1);
|
return (1);
|
}
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}
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|
|
/* Stuff KEY into the *front* of the input buffer.
|
/* Stuff KEY into the *front* of the input buffer.
|
Returns non-zero if successful, zero if there is
|
Returns non-zero if successful, zero if there is
|
no space left in the buffer. */
|
no space left in the buffer. */
|
int
|
int
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_rl_unget_char (key)
|
_rl_unget_char (key)
|
int key;
|
int key;
|
{
|
{
|
if (ibuffer_space ())
|
if (ibuffer_space ())
|
{
|
{
|
pop_index--;
|
pop_index--;
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if (pop_index < 0)
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if (pop_index < 0)
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pop_index = ibuffer_len - 1;
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pop_index = ibuffer_len - 1;
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ibuffer[pop_index] = key;
|
ibuffer[pop_index] = key;
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return (1);
|
return (1);
|
}
|
}
|
return (0);
|
return (0);
|
}
|
}
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|
|
int
|
int
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_rl_pushed_input_available ()
|
_rl_pushed_input_available ()
|
{
|
{
|
return (push_index != pop_index);
|
return (push_index != pop_index);
|
}
|
}
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|
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/* If a character is available to be read, then read it and stuff it into
|
/* If a character is available to be read, then read it and stuff it into
|
IBUFFER. Otherwise, just return. Returns number of characters read
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IBUFFER. Otherwise, just return. Returns number of characters read
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(0 if none available) and -1 on error (EIO). */
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(0 if none available) and -1 on error (EIO). */
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static int
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static int
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rl_gather_tyi ()
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rl_gather_tyi ()
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{
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{
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int tty;
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int tty;
|
register int tem, result;
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register int tem, result;
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int chars_avail, k;
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int chars_avail, k;
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char input;
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char input;
|
#if defined(HAVE_SELECT)
|
#if defined(HAVE_SELECT)
|
fd_set readfds, exceptfds;
|
fd_set readfds, exceptfds;
|
struct timeval timeout;
|
struct timeval timeout;
|
#endif
|
#endif
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|
|
tty = fileno (rl_instream);
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tty = fileno (rl_instream);
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|
|
#if defined (HAVE_SELECT)
|
#if defined (HAVE_SELECT)
|
FD_ZERO (&readfds);
|
FD_ZERO (&readfds);
|
FD_ZERO (&exceptfds);
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FD_ZERO (&exceptfds);
|
FD_SET (tty, &readfds);
|
FD_SET (tty, &readfds);
|
FD_SET (tty, &exceptfds);
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FD_SET (tty, &exceptfds);
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timeout.tv_sec = 0;
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timeout.tv_sec = 0;
|
timeout.tv_usec = _keyboard_input_timeout;
|
timeout.tv_usec = _keyboard_input_timeout;
|
result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout);
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result = select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout);
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if (result <= 0)
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if (result <= 0)
|
return 0; /* Nothing to read. */
|
return 0; /* Nothing to read. */
|
#endif
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#endif
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|
|
result = -1;
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result = -1;
|
#if defined (FIONREAD)
|
#if defined (FIONREAD)
|
errno = 0;
|
errno = 0;
|
result = ioctl (tty, FIONREAD, &chars_avail);
|
result = ioctl (tty, FIONREAD, &chars_avail);
|
if (result == -1 && errno == EIO)
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if (result == -1 && errno == EIO)
|
return -1;
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return -1;
|
#endif
|
#endif
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|
|
#if defined (O_NDELAY)
|
#if defined (O_NDELAY)
|
if (result == -1)
|
if (result == -1)
|
{
|
{
|
tem = fcntl (tty, F_GETFL, 0);
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tem = fcntl (tty, F_GETFL, 0);
|
|
|
fcntl (tty, F_SETFL, (tem | O_NDELAY));
|
fcntl (tty, F_SETFL, (tem | O_NDELAY));
|
chars_avail = read (tty, &input, 1);
|
chars_avail = read (tty, &input, 1);
|
|
|
fcntl (tty, F_SETFL, tem);
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fcntl (tty, F_SETFL, tem);
|
if (chars_avail == -1 && errno == EAGAIN)
|
if (chars_avail == -1 && errno == EAGAIN)
|
return 0;
|
return 0;
|
if (chars_avail == 0) /* EOF */
|
if (chars_avail == 0) /* EOF */
|
{
|
{
|
rl_stuff_char (EOF);
|
rl_stuff_char (EOF);
|
return (0);
|
return (0);
|
}
|
}
|
}
|
}
|
#endif /* O_NDELAY */
|
#endif /* O_NDELAY */
|
|
|
#if defined (__MINGW32__)
|
#if defined (__MINGW32__)
|
/* We use getch to read console input, so use the same
|
/* We use getch to read console input, so use the same
|
mechanism to check for more. Otherwise, we don't know. */
|
mechanism to check for more. Otherwise, we don't know. */
|
if (isatty (fileno (rl_instream)))
|
if (isatty (fileno (rl_instream)))
|
chars_avail = _kbhit ();
|
chars_avail = _kbhit ();
|
else
|
else
|
chars_avail = 0;
|
chars_avail = 0;
|
result = 0;
|
result = 0;
|
#endif
|
#endif
|
|
|
/* If there's nothing available, don't waste time trying to read
|
/* If there's nothing available, don't waste time trying to read
|
something. */
|
something. */
|
if (chars_avail <= 0)
|
if (chars_avail <= 0)
|
return 0;
|
return 0;
|
|
|
tem = ibuffer_space ();
|
tem = ibuffer_space ();
|
|
|
if (chars_avail > tem)
|
if (chars_avail > tem)
|
chars_avail = tem;
|
chars_avail = tem;
|
|
|
/* One cannot read all of the available input. I can only read a single
|
/* One cannot read all of the available input. I can only read a single
|
character at a time, or else programs which require input can be
|
character at a time, or else programs which require input can be
|
thwarted. If the buffer is larger than one character, I lose.
|
thwarted. If the buffer is larger than one character, I lose.
|
Damn! */
|
Damn! */
|
if (tem < ibuffer_len)
|
if (tem < ibuffer_len)
|
chars_avail = 0;
|
chars_avail = 0;
|
|
|
if (result != -1)
|
if (result != -1)
|
{
|
{
|
while (chars_avail--)
|
while (chars_avail--)
|
{
|
{
|
k = (*rl_getc_function) (rl_instream);
|
k = (*rl_getc_function) (rl_instream);
|
rl_stuff_char (k);
|
rl_stuff_char (k);
|
if (k == NEWLINE || k == RETURN)
|
if (k == NEWLINE || k == RETURN)
|
break;
|
break;
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if (chars_avail)
|
if (chars_avail)
|
rl_stuff_char (input);
|
rl_stuff_char (input);
|
}
|
}
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
int
|
int
|
rl_set_keyboard_input_timeout (u)
|
rl_set_keyboard_input_timeout (u)
|
int u;
|
int u;
|
{
|
{
|
int o;
|
int o;
|
|
|
o = _keyboard_input_timeout;
|
o = _keyboard_input_timeout;
|
if (u > 0)
|
if (u > 0)
|
_keyboard_input_timeout = u;
|
_keyboard_input_timeout = u;
|
return (o);
|
return (o);
|
}
|
}
|
|
|
/* Is there input available to be read on the readline input file
|
/* 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
|
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
|
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)
|
the user, it should use _rl_input_queued(timeout_value_in_microseconds)
|
instead. */
|
instead. */
|
int
|
int
|
_rl_input_available ()
|
_rl_input_available ()
|
{
|
{
|
#if defined(HAVE_SELECT)
|
#if defined(HAVE_SELECT)
|
fd_set readfds, exceptfds;
|
fd_set readfds, exceptfds;
|
struct timeval timeout;
|
struct timeval timeout;
|
#endif
|
#endif
|
#if !defined (HAVE_SELECT) && defined(FIONREAD)
|
#if !defined (HAVE_SELECT) && defined(FIONREAD)
|
int chars_avail;
|
int chars_avail;
|
#endif
|
#endif
|
int tty;
|
int tty;
|
|
|
tty = fileno (rl_instream);
|
tty = fileno (rl_instream);
|
|
|
#if defined (HAVE_SELECT)
|
#if defined (HAVE_SELECT)
|
FD_ZERO (&readfds);
|
FD_ZERO (&readfds);
|
FD_ZERO (&exceptfds);
|
FD_ZERO (&exceptfds);
|
FD_SET (tty, &readfds);
|
FD_SET (tty, &readfds);
|
FD_SET (tty, &exceptfds);
|
FD_SET (tty, &exceptfds);
|
timeout.tv_sec = 0;
|
timeout.tv_sec = 0;
|
timeout.tv_usec = _keyboard_input_timeout;
|
timeout.tv_usec = _keyboard_input_timeout;
|
return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0);
|
return (select (tty + 1, &readfds, (fd_set *)NULL, &exceptfds, &timeout) > 0);
|
#else
|
#else
|
|
|
#if defined (FIONREAD)
|
#if defined (FIONREAD)
|
if (ioctl (tty, FIONREAD, &chars_avail) == 0)
|
if (ioctl (tty, FIONREAD, &chars_avail) == 0)
|
return (chars_avail);
|
return (chars_avail);
|
#endif
|
#endif
|
|
|
#endif
|
#endif
|
|
|
#if defined (__MINGW32__)
|
#if defined (__MINGW32__)
|
/* We use getch to read console input, so use the same
|
/* We use getch to read console input, so use the same
|
mechanism to check for more. Otherwise, we don't know. */
|
mechanism to check for more. Otherwise, we don't know. */
|
if (isatty (fileno (rl_instream)))
|
if (isatty (fileno (rl_instream)))
|
return _kbhit ();
|
return _kbhit ();
|
#endif
|
#endif
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
int
|
int
|
_rl_input_queued (t)
|
_rl_input_queued (t)
|
int t;
|
int t;
|
{
|
{
|
int old_timeout, r;
|
int old_timeout, r;
|
|
|
old_timeout = rl_set_keyboard_input_timeout (t);
|
old_timeout = rl_set_keyboard_input_timeout (t);
|
r = _rl_input_available ();
|
r = _rl_input_available ();
|
rl_set_keyboard_input_timeout (old_timeout);
|
rl_set_keyboard_input_timeout (old_timeout);
|
return r;
|
return r;
|
}
|
}
|
|
|
void
|
void
|
_rl_insert_typein (c)
|
_rl_insert_typein (c)
|
int c;
|
int c;
|
{
|
{
|
int key, t, i;
|
int key, t, i;
|
char *string;
|
char *string;
|
|
|
i = key = 0;
|
i = key = 0;
|
string = (char *)xmalloc (ibuffer_len + 1);
|
string = (char *)xmalloc (ibuffer_len + 1);
|
string[i++] = (char) c;
|
string[i++] = (char) c;
|
|
|
while ((t = rl_get_char (&key)) &&
|
while ((t = rl_get_char (&key)) &&
|
_rl_keymap[key].type == ISFUNC &&
|
_rl_keymap[key].type == ISFUNC &&
|
_rl_keymap[key].function == rl_insert)
|
_rl_keymap[key].function == rl_insert)
|
string[i++] = key;
|
string[i++] = key;
|
|
|
if (t)
|
if (t)
|
_rl_unget_char (key);
|
_rl_unget_char (key);
|
|
|
string[i] = '\0';
|
string[i] = '\0';
|
rl_insert_text (string);
|
rl_insert_text (string);
|
free (string);
|
free (string);
|
}
|
}
|
|
|
/* Add KEY to the buffer of characters to be read. Returns 1 if the
|
/* Add KEY to the buffer of characters to be read. Returns 1 if the
|
character was stuffed correctly; 0 otherwise. */
|
character was stuffed correctly; 0 otherwise. */
|
int
|
int
|
rl_stuff_char (key)
|
rl_stuff_char (key)
|
int key;
|
int key;
|
{
|
{
|
if (ibuffer_space () == 0)
|
if (ibuffer_space () == 0)
|
return 0;
|
return 0;
|
|
|
if (key == EOF)
|
if (key == EOF)
|
{
|
{
|
key = NEWLINE;
|
key = NEWLINE;
|
rl_pending_input = EOF;
|
rl_pending_input = EOF;
|
RL_SETSTATE (RL_STATE_INPUTPENDING);
|
RL_SETSTATE (RL_STATE_INPUTPENDING);
|
}
|
}
|
ibuffer[push_index++] = key;
|
ibuffer[push_index++] = key;
|
if (push_index >= ibuffer_len)
|
if (push_index >= ibuffer_len)
|
push_index = 0;
|
push_index = 0;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* Make C be the next command to be executed. */
|
/* Make C be the next command to be executed. */
|
int
|
int
|
rl_execute_next (c)
|
rl_execute_next (c)
|
int c;
|
int c;
|
{
|
{
|
rl_pending_input = c;
|
rl_pending_input = c;
|
RL_SETSTATE (RL_STATE_INPUTPENDING);
|
RL_SETSTATE (RL_STATE_INPUTPENDING);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Clear any pending input pushed with rl_execute_next() */
|
/* Clear any pending input pushed with rl_execute_next() */
|
int
|
int
|
rl_clear_pending_input ()
|
rl_clear_pending_input ()
|
{
|
{
|
rl_pending_input = 0;
|
rl_pending_input = 0;
|
RL_UNSETSTATE (RL_STATE_INPUTPENDING);
|
RL_UNSETSTATE (RL_STATE_INPUTPENDING);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* **************************************************************** */
|
/* **************************************************************** */
|
/* */
|
/* */
|
/* Character Input */
|
/* Character Input */
|
/* */
|
/* */
|
/* **************************************************************** */
|
/* **************************************************************** */
|
|
|
/* Read a key, including pending input. */
|
/* Read a key, including pending input. */
|
int
|
int
|
rl_read_key ()
|
rl_read_key ()
|
{
|
{
|
int c;
|
int c;
|
|
|
rl_key_sequence_length++;
|
rl_key_sequence_length++;
|
|
|
if (rl_pending_input)
|
if (rl_pending_input)
|
{
|
{
|
c = rl_pending_input;
|
c = rl_pending_input;
|
rl_clear_pending_input ();
|
rl_clear_pending_input ();
|
}
|
}
|
else
|
else
|
{
|
{
|
/* If input is coming from a macro, then use that. */
|
/* If input is coming from a macro, then use that. */
|
if (c = _rl_next_macro_key ())
|
if (c = _rl_next_macro_key ())
|
return (c);
|
return (c);
|
|
|
/* If the user has an event function, then call it periodically. */
|
/* If the user has an event function, then call it periodically. */
|
if (rl_event_hook)
|
if (rl_event_hook)
|
{
|
{
|
while (rl_event_hook && rl_get_char (&c) == 0)
|
while (rl_event_hook && rl_get_char (&c) == 0)
|
{
|
{
|
(*rl_event_hook) ();
|
(*rl_event_hook) ();
|
if (rl_done) /* XXX - experimental */
|
if (rl_done) /* XXX - experimental */
|
return ('\n');
|
return ('\n');
|
if (rl_gather_tyi () < 0) /* XXX - EIO */
|
if (rl_gather_tyi () < 0) /* XXX - EIO */
|
{
|
{
|
rl_done = 1;
|
rl_done = 1;
|
return ('\n');
|
return ('\n');
|
}
|
}
|
}
|
}
|
}
|
}
|
else
|
else
|
{
|
{
|
if (rl_get_char (&c) == 0)
|
if (rl_get_char (&c) == 0)
|
c = (*rl_getc_function) (rl_instream);
|
c = (*rl_getc_function) (rl_instream);
|
}
|
}
|
}
|
}
|
|
|
return (c);
|
return (c);
|
}
|
}
|
|
|
int
|
int
|
rl_getc (stream)
|
rl_getc (stream)
|
FILE *stream;
|
FILE *stream;
|
{
|
{
|
int result;
|
int result;
|
unsigned char c;
|
unsigned char c;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
#if defined (__MINGW32__)
|
#if defined (__MINGW32__)
|
if (isatty (fileno (stream)))
|
if (isatty (fileno (stream)))
|
return (getch ());
|
return (getch ());
|
#endif
|
#endif
|
result = read (fileno (stream), &c, sizeof (unsigned char));
|
result = read (fileno (stream), &c, sizeof (unsigned char));
|
|
|
if (result == sizeof (unsigned char))
|
if (result == sizeof (unsigned char))
|
return (c);
|
return (c);
|
|
|
/* If zero characters are returned, then the file that we are
|
/* If zero characters are returned, then the file that we are
|
reading from is empty! Return EOF in that case. */
|
reading from is empty! Return EOF in that case. */
|
if (result == 0)
|
if (result == 0)
|
return (EOF);
|
return (EOF);
|
|
|
#if defined (__BEOS__)
|
#if defined (__BEOS__)
|
if (errno == EINTR)
|
if (errno == EINTR)
|
continue;
|
continue;
|
#endif
|
#endif
|
|
|
#if defined (EWOULDBLOCK)
|
#if defined (EWOULDBLOCK)
|
# define X_EWOULDBLOCK EWOULDBLOCK
|
# define X_EWOULDBLOCK EWOULDBLOCK
|
#else
|
#else
|
# define X_EWOULDBLOCK -99
|
# define X_EWOULDBLOCK -99
|
#endif
|
#endif
|
|
|
#if defined (EAGAIN)
|
#if defined (EAGAIN)
|
# define X_EAGAIN EAGAIN
|
# define X_EAGAIN EAGAIN
|
#else
|
#else
|
# define X_EAGAIN -99
|
# define X_EAGAIN -99
|
#endif
|
#endif
|
|
|
if (errno == X_EWOULDBLOCK || errno == X_EAGAIN)
|
if (errno == X_EWOULDBLOCK || errno == X_EAGAIN)
|
{
|
{
|
if (sh_unset_nodelay_mode (fileno (stream)) < 0)
|
if (sh_unset_nodelay_mode (fileno (stream)) < 0)
|
return (EOF);
|
return (EOF);
|
continue;
|
continue;
|
}
|
}
|
|
|
#undef X_EWOULDBLOCK
|
#undef X_EWOULDBLOCK
|
#undef X_EAGAIN
|
#undef X_EAGAIN
|
|
|
/* If the error that we received was SIGINT, then try again,
|
/* If the error that we received was SIGINT, then try again,
|
this is simply an interrupted system call to read ().
|
this is simply an interrupted system call to read ().
|
Otherwise, some error ocurred, also signifying EOF. */
|
Otherwise, some error ocurred, also signifying EOF. */
|
if (errno != EINTR)
|
if (errno != EINTR)
|
return (EOF);
|
return (EOF);
|
}
|
}
|
}
|
}
|
|
|
#if defined (HANDLE_MULTIBYTE)
|
#if defined (HANDLE_MULTIBYTE)
|
/* read multibyte char */
|
/* read multibyte char */
|
int
|
int
|
_rl_read_mbchar (mbchar, size)
|
_rl_read_mbchar (mbchar, size)
|
char *mbchar;
|
char *mbchar;
|
int size;
|
int size;
|
{
|
{
|
int mb_len = 0;
|
int mb_len = 0;
|
size_t mbchar_bytes_length;
|
size_t mbchar_bytes_length;
|
wchar_t wc;
|
wchar_t wc;
|
mbstate_t ps, ps_back;
|
mbstate_t ps, ps_back;
|
|
|
memset(&ps, 0, sizeof (mbstate_t));
|
memset(&ps, 0, sizeof (mbstate_t));
|
memset(&ps_back, 0, sizeof (mbstate_t));
|
memset(&ps_back, 0, sizeof (mbstate_t));
|
|
|
while (mb_len < size)
|
while (mb_len < size)
|
{
|
{
|
RL_SETSTATE(RL_STATE_MOREINPUT);
|
RL_SETSTATE(RL_STATE_MOREINPUT);
|
mbchar[mb_len++] = rl_read_key ();
|
mbchar[mb_len++] = rl_read_key ();
|
RL_UNSETSTATE(RL_STATE_MOREINPUT);
|
RL_UNSETSTATE(RL_STATE_MOREINPUT);
|
|
|
mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps);
|
mbchar_bytes_length = mbrtowc (&wc, mbchar, mb_len, &ps);
|
if (mbchar_bytes_length == (size_t)(-1))
|
if (mbchar_bytes_length == (size_t)(-1))
|
break; /* invalid byte sequence for the current locale */
|
break; /* invalid byte sequence for the current locale */
|
else if (mbchar_bytes_length == (size_t)(-2))
|
else if (mbchar_bytes_length == (size_t)(-2))
|
{
|
{
|
/* shorted bytes */
|
/* shorted bytes */
|
ps = ps_back;
|
ps = ps_back;
|
continue;
|
continue;
|
}
|
}
|
else if (mbchar_bytes_length == 0)
|
else if (mbchar_bytes_length == 0)
|
{
|
{
|
mbchar[0] = '\0'; /* null wide character */
|
mbchar[0] = '\0'; /* null wide character */
|
mb_len = 1;
|
mb_len = 1;
|
break;
|
break;
|
}
|
}
|
else if (mbchar_bytes_length > (size_t)(0))
|
else if (mbchar_bytes_length > (size_t)(0))
|
break;
|
break;
|
}
|
}
|
|
|
return mb_len;
|
return mb_len;
|
}
|
}
|
|
|
/* Read a multibyte-character string whose first character is FIRST into
|
/* 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 MBLEN. Returns the last character read, which
|
may be FIRST. Used by the search functions, among others. Very similar
|
may be FIRST. Used by the search functions, among others. Very similar
|
to _rl_read_mbchar. */
|
to _rl_read_mbchar. */
|
int
|
int
|
_rl_read_mbstring (first, mb, mblen)
|
_rl_read_mbstring (first, mb, mblen)
|
int first;
|
int first;
|
char *mb;
|
char *mb;
|
int mblen;
|
int mblen;
|
{
|
{
|
int i, c;
|
int i, c;
|
mbstate_t ps;
|
mbstate_t ps;
|
|
|
c = first;
|
c = first;
|
memset (mb, 0, mblen);
|
memset (mb, 0, mblen);
|
for (i = 0; i < mblen; i++)
|
for (i = 0; i < mblen; i++)
|
{
|
{
|
mb[i] = (char)c;
|
mb[i] = (char)c;
|
memset (&ps, 0, sizeof (mbstate_t));
|
memset (&ps, 0, sizeof (mbstate_t));
|
if (_rl_get_char_len (mb, &ps) == -2)
|
if (_rl_get_char_len (mb, &ps) == -2)
|
{
|
{
|
/* Read more for multibyte character */
|
/* Read more for multibyte character */
|
RL_SETSTATE (RL_STATE_MOREINPUT);
|
RL_SETSTATE (RL_STATE_MOREINPUT);
|
c = rl_read_key ();
|
c = rl_read_key ();
|
RL_UNSETSTATE (RL_STATE_MOREINPUT);
|
RL_UNSETSTATE (RL_STATE_MOREINPUT);
|
}
|
}
|
else
|
else
|
break;
|
break;
|
}
|
}
|
return c;
|
return c;
|
}
|
}
|
#endif /* HANDLE_MULTIBYTE */
|
#endif /* HANDLE_MULTIBYTE */
|
|
|
