1994-05-27 05:00:24 +00:00
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Christos Zoulas of Cornell University.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
|
2005-08-07 20:55:59 +00:00
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* 3. Neither the name of the University nor the names of its contributors
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1994-05-27 05:00:24 +00:00
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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2001-10-01 08:41:27 +00:00
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*
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2012-06-22 18:01:22 +00:00
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* $NetBSD: read.c,v 1.52 2009/07/22 15:57:00 christos Exp $
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1994-05-27 05:00:24 +00:00
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*/
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2000-05-22 06:01:31 +00:00
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#if !defined(lint) && !defined(SCCSID)
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1994-05-27 05:00:24 +00:00
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static char sccsid[] = "@(#)read.c 8.1 (Berkeley) 6/4/93";
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2000-05-22 06:01:31 +00:00
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#endif /* not lint && not SCCSID */
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2001-10-01 08:41:27 +00:00
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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1994-05-27 05:00:24 +00:00
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/*
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* read.c: Clean this junk up! This is horrible code.
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* Terminal read functions
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*/
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#include "sys.h"
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2000-05-22 05:49:31 +00:00
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#include <errno.h>
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2000-10-02 22:07:53 +00:00
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#include <fcntl.h>
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1994-05-27 05:00:24 +00:00
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#include <unistd.h>
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#include <stdlib.h>
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#include "el.h"
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2012-06-22 18:01:22 +00:00
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#define OKCMD -1 /* must be -1! */
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1994-05-27 05:00:24 +00:00
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2001-10-01 08:41:27 +00:00
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private int read__fixio(int, int);
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private int read_preread(EditLine *);
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private int read_char(EditLine *, char *);
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2005-08-07 20:55:59 +00:00
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private int read_getcmd(EditLine *, el_action_t *, char *);
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2007-03-11 21:47:40 +00:00
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private void read_pop(c_macro_t *);
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2005-08-07 20:55:59 +00:00
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/* read_init():
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* Initialize the read stuff
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*/
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protected int
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read_init(EditLine *el)
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{
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/* builtin read_char */
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el->el_read.read_char = read_char;
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return 0;
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}
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/* el_read_setfn():
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* Set the read char function to the one provided.
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* If it is set to EL_BUILTIN_GETCFN, then reset to the builtin one.
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*/
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protected int
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el_read_setfn(EditLine *el, el_rfunc_t rc)
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{
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el->el_read.read_char = (rc == EL_BUILTIN_GETCFN) ? read_char : rc;
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return 0;
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}
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/* el_read_getfn():
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* return the current read char function, or EL_BUILTIN_GETCFN
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* if it is the default one
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*/
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protected el_rfunc_t
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el_read_getfn(EditLine *el)
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{
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return (el->el_read.read_char == read_char) ?
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EL_BUILTIN_GETCFN : el->el_read.read_char;
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}
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#ifndef MIN
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#define MIN(A,B) ((A) < (B) ? (A) : (B))
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#endif
|
1994-05-27 05:00:24 +00:00
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#ifdef DEBUG_EDIT
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private void
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2001-10-01 08:41:27 +00:00
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read_debug(EditLine *el)
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1994-05-27 05:00:24 +00:00
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{
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|
2001-10-01 08:41:27 +00:00
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if (el->el_line.cursor > el->el_line.lastchar)
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(void) fprintf(el->el_errfile, "cursor > lastchar\r\n");
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if (el->el_line.cursor < el->el_line.buffer)
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(void) fprintf(el->el_errfile, "cursor < buffer\r\n");
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if (el->el_line.cursor > el->el_line.limit)
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(void) fprintf(el->el_errfile, "cursor > limit\r\n");
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if (el->el_line.lastchar > el->el_line.limit)
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(void) fprintf(el->el_errfile, "lastchar > limit\r\n");
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if (el->el_line.limit != &el->el_line.buffer[EL_BUFSIZ - 2])
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(void) fprintf(el->el_errfile, "limit != &buffer[EL_BUFSIZ-2]\r\n");
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1994-05-27 05:00:24 +00:00
|
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}
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#endif /* DEBUG_EDIT */
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2001-10-01 08:41:27 +00:00
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1994-05-27 05:00:24 +00:00
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/* read__fixio():
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* Try to recover from a read error
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*/
|
2001-10-01 08:41:27 +00:00
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/* ARGSUSED */
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1994-05-27 05:00:24 +00:00
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private int
|
2005-08-07 20:55:59 +00:00
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read__fixio(int fd __unused, int e)
|
1994-05-27 05:00:24 +00:00
|
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{
|
2001-10-01 08:41:27 +00:00
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switch (e) {
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case -1: /* Make sure that the code is reachable */
|
1994-05-27 05:00:24 +00:00
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#ifdef EWOULDBLOCK
|
2001-10-01 08:41:27 +00:00
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case EWOULDBLOCK:
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#ifndef TRY_AGAIN
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#define TRY_AGAIN
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#endif
|
1994-05-27 05:00:24 +00:00
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#endif /* EWOULDBLOCK */
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#if defined(POSIX) && defined(EAGAIN)
|
2001-10-01 08:41:27 +00:00
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#if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
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case EAGAIN:
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#ifndef TRY_AGAIN
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#define TRY_AGAIN
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#endif
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#endif /* EWOULDBLOCK && EWOULDBLOCK != EAGAIN */
|
1994-05-27 05:00:24 +00:00
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#endif /* POSIX && EAGAIN */
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|
2001-10-01 08:41:27 +00:00
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e = 0;
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1994-05-27 05:00:24 +00:00
|
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#ifdef TRY_AGAIN
|
2001-10-01 08:41:27 +00:00
|
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#if defined(F_SETFL) && defined(O_NDELAY)
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if ((e = fcntl(fd, F_GETFL, 0)) == -1)
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return (-1);
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if (fcntl(fd, F_SETFL, e & ~O_NDELAY) == -1)
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return (-1);
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else
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e = 1;
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|
#endif /* F_SETFL && O_NDELAY */
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#ifdef FIONBIO
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{
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|
int zero = 0;
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if (ioctl(fd, FIONBIO, (ioctl_t) & zero) == -1)
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return (-1);
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else
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e = 1;
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}
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|
#endif /* FIONBIO */
|
1994-05-27 05:00:24 +00:00
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|
#endif /* TRY_AGAIN */
|
2001-10-01 08:41:27 +00:00
|
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|
return (e ? 0 : -1);
|
1994-05-27 05:00:24 +00:00
|
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|
|
2001-10-01 08:41:27 +00:00
|
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|
case EINTR:
|
2012-06-22 18:01:22 +00:00
|
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|
return (-1);
|
1994-05-27 05:00:24 +00:00
|
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|
2001-10-01 08:41:27 +00:00
|
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|
default:
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|
return (-1);
|
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
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|
|
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|
|
/* read_preread():
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|
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* Try to read the stuff in the input queue;
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*/
|
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|
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private int
|
2001-10-01 08:41:27 +00:00
|
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|
read_preread(EditLine *el)
|
1994-05-27 05:00:24 +00:00
|
|
|
{
|
2001-10-01 08:41:27 +00:00
|
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|
int chrs = 0;
|
1994-05-27 05:00:24 +00:00
|
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|
2001-10-01 08:41:27 +00:00
|
|
|
if (el->el_tty.t_mode == ED_IO)
|
|
|
|
return (0);
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
#ifdef FIONREAD
|
2001-10-01 08:41:27 +00:00
|
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|
(void) ioctl(el->el_infd, FIONREAD, (ioctl_t) & chrs);
|
1994-05-27 05:00:24 +00:00
|
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|
if (chrs > 0) {
|
2001-10-01 08:41:27 +00:00
|
|
|
char buf[EL_BUFSIZ];
|
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|
|
|
|
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|
chrs = read(el->el_infd, buf,
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|
|
(size_t) MIN(chrs, EL_BUFSIZ - 1));
|
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|
|
if (chrs > 0) {
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|
|
buf[chrs] = '\0';
|
2005-08-07 20:55:59 +00:00
|
|
|
el_push(el, buf);
|
2001-10-01 08:41:27 +00:00
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
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|
#endif /* FIONREAD */
|
1994-05-27 05:00:24 +00:00
|
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|
|
2001-10-01 08:41:27 +00:00
|
|
|
return (chrs > 0);
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* el_push():
|
|
|
|
* Push a macro
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|
|
|
*/
|
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|
|
public void
|
2011-04-05 18:41:01 +00:00
|
|
|
el_push(EditLine *el, const char *str)
|
1994-05-27 05:00:24 +00:00
|
|
|
{
|
2001-10-01 08:41:27 +00:00
|
|
|
c_macro_t *ma = &el->el_chared.c_macro;
|
|
|
|
|
|
|
|
if (str != NULL && ma->level + 1 < EL_MAXMACRO) {
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|
|
|
ma->level++;
|
2005-08-07 20:55:59 +00:00
|
|
|
if ((ma->macro[ma->level] = el_strdup(str)) != NULL)
|
|
|
|
return;
|
|
|
|
ma->level--;
|
2001-10-01 08:41:27 +00:00
|
|
|
}
|
2005-08-07 20:55:59 +00:00
|
|
|
term_beep(el);
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el);
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* read_getcmd():
|
|
|
|
* Return next command from the input stream.
|
|
|
|
*/
|
|
|
|
private int
|
2001-10-01 08:41:27 +00:00
|
|
|
read_getcmd(EditLine *el, el_action_t *cmdnum, char *ch)
|
1994-05-27 05:00:24 +00:00
|
|
|
{
|
2005-08-07 20:55:59 +00:00
|
|
|
el_action_t cmd;
|
2001-10-01 08:41:27 +00:00
|
|
|
int num;
|
1994-05-27 05:00:24 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
el->el_errno = 0;
|
2005-08-07 20:55:59 +00:00
|
|
|
do {
|
2012-06-22 18:01:22 +00:00
|
|
|
if ((num = el_getc(el, ch)) != 1) { /* if EOF or error */
|
|
|
|
el->el_errno = num == 0 ? 0 : errno;
|
2001-10-01 08:41:27 +00:00
|
|
|
return (num);
|
2012-06-22 18:01:22 +00:00
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
#ifdef KANJI
|
2001-10-01 08:41:27 +00:00
|
|
|
if ((*ch & 0200)) {
|
|
|
|
el->el_state.metanext = 0;
|
|
|
|
cmd = CcViMap[' '];
|
|
|
|
break;
|
|
|
|
} else
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* KANJI */
|
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
if (el->el_state.metanext) {
|
|
|
|
el->el_state.metanext = 0;
|
|
|
|
*ch |= 0200;
|
|
|
|
}
|
|
|
|
cmd = el->el_map.current[(unsigned char) *ch];
|
|
|
|
if (cmd == ED_SEQUENCE_LEAD_IN) {
|
|
|
|
key_value_t val;
|
|
|
|
switch (key_get(el, ch, &val)) {
|
|
|
|
case XK_CMD:
|
|
|
|
cmd = val.cmd;
|
|
|
|
break;
|
|
|
|
case XK_STR:
|
|
|
|
el_push(el, val.str);
|
|
|
|
break;
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef notyet
|
2001-10-01 08:41:27 +00:00
|
|
|
case XK_EXE:
|
|
|
|
/* XXX: In the future to run a user function */
|
|
|
|
RunCommand(val.str);
|
|
|
|
break;
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif
|
2001-10-01 08:41:27 +00:00
|
|
|
default:
|
|
|
|
EL_ABORT((el->el_errfile, "Bad XK_ type \n"));
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (el->el_map.alt == NULL)
|
|
|
|
el->el_map.current = el->el_map.key;
|
2005-08-07 20:55:59 +00:00
|
|
|
} while (cmd == ED_SEQUENCE_LEAD_IN);
|
2001-10-01 08:41:27 +00:00
|
|
|
*cmdnum = cmd;
|
|
|
|
return (OKCMD);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* read_char():
|
|
|
|
* Read a character from the tty.
|
|
|
|
*/
|
|
|
|
private int
|
|
|
|
read_char(EditLine *el, char *cp)
|
|
|
|
{
|
2012-06-22 18:01:22 +00:00
|
|
|
ssize_t num_read;
|
2001-10-01 08:41:27 +00:00
|
|
|
int tried = 0;
|
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
again:
|
|
|
|
el->el_signal->sig_no = 0;
|
|
|
|
while ((num_read = read(el->el_infd, cp, 1)) == -1) {
|
|
|
|
if (el->el_signal->sig_no == SIGCONT) {
|
|
|
|
sig_set(el);
|
|
|
|
el_set(el, EL_REFRESH);
|
|
|
|
goto again;
|
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
|
|
if (!tried && read__fixio(el->el_infd, errno) == 0)
|
|
|
|
tried = 1;
|
|
|
|
else {
|
|
|
|
*cp = '\0';
|
|
|
|
return (-1);
|
|
|
|
}
|
2012-06-22 18:01:22 +00:00
|
|
|
}
|
|
|
|
return (int)num_read;
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
|
|
|
|
2007-03-11 21:47:40 +00:00
|
|
|
/* read_pop():
|
|
|
|
* Pop a macro from the stack
|
|
|
|
*/
|
|
|
|
private void
|
|
|
|
read_pop(c_macro_t *ma)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
el_free(ma->macro[0]);
|
2012-06-22 18:01:22 +00:00
|
|
|
for (i = 0; i < ma->level; i++)
|
|
|
|
ma->macro[i] = ma->macro[i + 1];
|
|
|
|
ma->level--;
|
2007-03-11 21:47:40 +00:00
|
|
|
ma->offset = 0;
|
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
/* el_getc():
|
|
|
|
* Read a character
|
|
|
|
*/
|
|
|
|
public int
|
2001-10-01 08:41:27 +00:00
|
|
|
el_getc(EditLine *el, char *cp)
|
1994-05-27 05:00:24 +00:00
|
|
|
{
|
2001-10-01 08:41:27 +00:00
|
|
|
int num_read;
|
|
|
|
c_macro_t *ma = &el->el_chared.c_macro;
|
1994-05-27 05:00:24 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el);
|
2001-10-01 08:41:27 +00:00
|
|
|
for (;;) {
|
|
|
|
if (ma->level < 0) {
|
|
|
|
if (!read_preread(el))
|
|
|
|
break;
|
|
|
|
}
|
2007-03-11 21:47:40 +00:00
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
if (ma->level < 0)
|
|
|
|
break;
|
|
|
|
|
2007-03-11 21:47:40 +00:00
|
|
|
if (ma->macro[0][ma->offset] == '\0') {
|
|
|
|
read_pop(ma);
|
2001-10-01 08:41:27 +00:00
|
|
|
continue;
|
|
|
|
}
|
2007-03-11 21:47:40 +00:00
|
|
|
|
|
|
|
*cp = ma->macro[0][ma->offset++] & 0377;
|
|
|
|
|
|
|
|
if (ma->macro[0][ma->offset] == '\0') {
|
2005-08-07 20:55:59 +00:00
|
|
|
/* Needed for QuoteMode On */
|
2007-03-11 21:47:40 +00:00
|
|
|
read_pop(ma);
|
2001-10-01 08:41:27 +00:00
|
|
|
}
|
2007-03-11 21:47:40 +00:00
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
return (1);
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile, "Turning raw mode on\n");
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
if (tty_rawmode(el) < 0)/* make sure the tty is set up correctly */
|
|
|
|
return (0);
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile, "Reading a character\n");
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2005-08-07 20:55:59 +00:00
|
|
|
num_read = (*el->el_read.read_char)(el, cp);
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile, "Got it %c\n", *cp);
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
return (num_read);
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
|
|
|
|
2005-08-07 20:55:59 +00:00
|
|
|
protected void
|
|
|
|
read_prepare(EditLine *el)
|
|
|
|
{
|
|
|
|
if (el->el_flags & HANDLE_SIGNALS)
|
|
|
|
sig_set(el);
|
|
|
|
if (el->el_flags & NO_TTY)
|
|
|
|
return;
|
|
|
|
if ((el->el_flags & (UNBUFFERED|EDIT_DISABLED)) == UNBUFFERED)
|
|
|
|
tty_rawmode(el);
|
|
|
|
|
|
|
|
/* This is relatively cheap, and things go terribly wrong if
|
|
|
|
we have the wrong size. */
|
|
|
|
el_resize(el);
|
|
|
|
re_clear_display(el); /* reset the display stuff */
|
|
|
|
ch_reset(el, 0);
|
|
|
|
re_refresh(el); /* print the prompt */
|
|
|
|
|
|
|
|
if (el->el_flags & UNBUFFERED)
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el);
|
2005-08-07 20:55:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
protected void
|
|
|
|
read_finish(EditLine *el)
|
|
|
|
{
|
|
|
|
if ((el->el_flags & UNBUFFERED) == 0)
|
|
|
|
(void) tty_cookedmode(el);
|
|
|
|
if (el->el_flags & HANDLE_SIGNALS)
|
|
|
|
sig_clr(el);
|
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
|
|
|
|
public const char *
|
2001-10-01 08:41:27 +00:00
|
|
|
el_gets(EditLine *el, int *nread)
|
1994-05-27 05:00:24 +00:00
|
|
|
{
|
2001-10-01 08:41:27 +00:00
|
|
|
int retval;
|
|
|
|
el_action_t cmdnum = 0;
|
|
|
|
int num; /* how many chars we have read at NL */
|
|
|
|
char ch;
|
2005-08-07 20:55:59 +00:00
|
|
|
int crlf = 0;
|
2012-06-22 18:01:22 +00:00
|
|
|
int nrb;
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef FIONREAD
|
2001-10-01 08:41:27 +00:00
|
|
|
c_macro_t *ma = &el->el_chared.c_macro;
|
|
|
|
#endif /* FIONREAD */
|
1994-05-27 05:00:24 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
if (nread == NULL)
|
|
|
|
nread = &nrb;
|
|
|
|
*nread = 0;
|
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
if (el->el_flags & NO_TTY) {
|
|
|
|
char *cp = el->el_line.buffer;
|
|
|
|
size_t idx;
|
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
while ((num = (*el->el_read.read_char)(el, cp)) == 1) {
|
2001-10-01 08:41:27 +00:00
|
|
|
/* make sure there is space for next character */
|
|
|
|
if (cp + 1 >= el->el_line.limit) {
|
|
|
|
idx = (cp - el->el_line.buffer);
|
|
|
|
if (!ch_enlargebufs(el, 2))
|
|
|
|
break;
|
|
|
|
cp = &el->el_line.buffer[idx];
|
|
|
|
}
|
|
|
|
cp++;
|
2005-08-07 20:55:59 +00:00
|
|
|
if (el->el_flags & UNBUFFERED)
|
|
|
|
break;
|
2001-10-01 08:41:27 +00:00
|
|
|
if (cp[-1] == '\r' || cp[-1] == '\n')
|
|
|
|
break;
|
|
|
|
}
|
2012-06-22 18:01:22 +00:00
|
|
|
if (num == -1) {
|
|
|
|
if (errno == EINTR)
|
|
|
|
cp = el->el_line.buffer;
|
|
|
|
el->el_errno = errno;
|
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
|
|
|
|
|
|
el->el_line.cursor = el->el_line.lastchar = cp;
|
|
|
|
*cp = '\0';
|
2012-06-22 18:01:22 +00:00
|
|
|
*nread = (int)(el->el_line.cursor - el->el_line.buffer);
|
|
|
|
goto done;
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
2005-08-07 20:55:59 +00:00
|
|
|
|
1994-05-27 05:00:24 +00:00
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
#ifdef FIONREAD
|
|
|
|
if (el->el_tty.t_mode == EX_IO && ma->level < 0) {
|
|
|
|
long chrs = 0;
|
|
|
|
|
|
|
|
(void) ioctl(el->el_infd, FIONREAD, (ioctl_t) & chrs);
|
|
|
|
if (chrs == 0) {
|
|
|
|
if (tty_rawmode(el) < 0) {
|
2012-06-22 18:01:22 +00:00
|
|
|
errno = 0;
|
|
|
|
*nread = 0;
|
2001-10-01 08:41:27 +00:00
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* FIONREAD */
|
1994-05-27 05:00:24 +00:00
|
|
|
|
2005-08-07 20:55:59 +00:00
|
|
|
if ((el->el_flags & UNBUFFERED) == 0)
|
|
|
|
read_prepare(el);
|
2001-10-01 08:41:27 +00:00
|
|
|
|
|
|
|
if (el->el_flags & EDIT_DISABLED) {
|
2005-08-07 20:55:59 +00:00
|
|
|
char *cp;
|
2001-10-01 08:41:27 +00:00
|
|
|
size_t idx;
|
2012-06-22 18:01:22 +00:00
|
|
|
|
2005-08-07 20:55:59 +00:00
|
|
|
if ((el->el_flags & UNBUFFERED) == 0)
|
|
|
|
cp = el->el_line.buffer;
|
|
|
|
else
|
|
|
|
cp = el->el_line.lastchar;
|
2001-10-01 08:41:27 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el);
|
2001-10-01 08:41:27 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
while ((num = (*el->el_read.read_char)(el, cp)) == 1) {
|
2001-10-01 08:41:27 +00:00
|
|
|
/* make sure there is space next character */
|
|
|
|
if (cp + 1 >= el->el_line.limit) {
|
|
|
|
idx = (cp - el->el_line.buffer);
|
|
|
|
if (!ch_enlargebufs(el, 2))
|
|
|
|
break;
|
|
|
|
cp = &el->el_line.buffer[idx];
|
|
|
|
}
|
|
|
|
cp++;
|
2005-08-07 20:55:59 +00:00
|
|
|
crlf = cp[-1] == '\r' || cp[-1] == '\n';
|
|
|
|
if (el->el_flags & UNBUFFERED)
|
|
|
|
break;
|
|
|
|
if (crlf)
|
2001-10-01 08:41:27 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
if (num == -1) {
|
|
|
|
if (errno == EINTR)
|
|
|
|
cp = el->el_line.buffer;
|
|
|
|
el->el_errno = errno;
|
|
|
|
}
|
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
el->el_line.cursor = el->el_line.lastchar = cp;
|
|
|
|
*cp = '\0';
|
2012-06-22 18:01:22 +00:00
|
|
|
goto done;
|
2001-10-01 08:41:27 +00:00
|
|
|
}
|
2005-08-07 20:55:59 +00:00
|
|
|
|
2001-10-01 08:41:27 +00:00
|
|
|
for (num = OKCMD; num == OKCMD;) { /* while still editing this
|
|
|
|
* line */
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_EDIT
|
2001-10-01 08:41:27 +00:00
|
|
|
read_debug(el);
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_EDIT */
|
2001-10-01 08:41:27 +00:00
|
|
|
/* if EOF or error */
|
|
|
|
if ((num = read_getcmd(el, &cmdnum, &ch)) != OKCMD) {
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"Returning from el_gets %d\n", num);
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
break;
|
|
|
|
}
|
2012-06-22 18:01:22 +00:00
|
|
|
if (el->el_errno == EINTR) {
|
|
|
|
el->el_line.buffer[0] = '\0';
|
|
|
|
el->el_line.lastchar =
|
|
|
|
el->el_line.cursor = el->el_line.buffer;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if ((unsigned int)cmdnum >= (unsigned int)el->el_map.nfunc) { /* BUG CHECK command */
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_EDIT
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"ERROR: illegal command from key 0%o\r\n", ch);
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_EDIT */
|
2001-10-01 08:41:27 +00:00
|
|
|
continue; /* try again */
|
|
|
|
}
|
|
|
|
/* now do the real command */
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
{
|
|
|
|
el_bindings_t *b;
|
|
|
|
for (b = el->el_map.help; b->name; b++)
|
|
|
|
if (b->func == cmdnum)
|
|
|
|
break;
|
|
|
|
if (b->name)
|
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"Executing %s\n", b->name);
|
|
|
|
else
|
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"Error command = %d\n", cmdnum);
|
|
|
|
}
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2005-08-07 20:55:59 +00:00
|
|
|
/* vi redo needs these way down the levels... */
|
|
|
|
el->el_state.thiscmd = cmdnum;
|
|
|
|
el->el_state.thisch = ch;
|
|
|
|
if (el->el_map.type == MAP_VI &&
|
|
|
|
el->el_map.current == el->el_map.key &&
|
|
|
|
el->el_chared.c_redo.pos < el->el_chared.c_redo.lim) {
|
|
|
|
if (cmdnum == VI_DELETE_PREV_CHAR &&
|
|
|
|
el->el_chared.c_redo.pos != el->el_chared.c_redo.buf
|
|
|
|
&& isprint((unsigned char)el->el_chared.c_redo.pos[-1]))
|
|
|
|
el->el_chared.c_redo.pos--;
|
|
|
|
else
|
|
|
|
*el->el_chared.c_redo.pos++ = ch;
|
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
|
|
retval = (*el->el_map.func[cmdnum]) (el, ch);
|
2005-08-07 20:55:59 +00:00
|
|
|
#ifdef DEBUG_READ
|
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"Returned state %d\n", retval );
|
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
|
|
|
|
/* save the last command here */
|
|
|
|
el->el_state.lastcmd = cmdnum;
|
|
|
|
|
|
|
|
/* use any return value */
|
|
|
|
switch (retval) {
|
|
|
|
case CC_CURSOR:
|
|
|
|
re_refresh_cursor(el);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_REDISPLAY:
|
|
|
|
re_clear_lines(el);
|
|
|
|
re_clear_display(el);
|
|
|
|
/* FALLTHROUGH */
|
|
|
|
|
|
|
|
case CC_REFRESH:
|
|
|
|
re_refresh(el);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_REFRESH_BEEP:
|
|
|
|
re_refresh(el);
|
|
|
|
term_beep(el);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_NORM: /* normal char */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_ARGHACK: /* Suggested by Rich Salz */
|
|
|
|
/* <rsalz@pineapple.bbn.com> */
|
2005-08-07 20:55:59 +00:00
|
|
|
continue; /* keep going... */
|
2001-10-01 08:41:27 +00:00
|
|
|
|
|
|
|
case CC_EOF: /* end of file typed */
|
2005-08-07 20:55:59 +00:00
|
|
|
if ((el->el_flags & UNBUFFERED) == 0)
|
|
|
|
num = 0;
|
|
|
|
else if (num == -1) {
|
|
|
|
*el->el_line.lastchar++ = CONTROL('d');
|
|
|
|
el->el_line.cursor = el->el_line.lastchar;
|
|
|
|
num = 1;
|
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_NEWLINE: /* normal end of line */
|
2012-06-22 18:01:22 +00:00
|
|
|
num = (int)(el->el_line.lastchar - el->el_line.buffer);
|
2001-10-01 08:41:27 +00:00
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_FATAL: /* fatal error, reset to known state */
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"*** editor fatal ERROR ***\r\n\n");
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
/* put (real) cursor in a known place */
|
|
|
|
re_clear_display(el); /* reset the display stuff */
|
2005-08-07 20:55:59 +00:00
|
|
|
ch_reset(el, 1); /* reset the input pointers */
|
2001-10-01 08:41:27 +00:00
|
|
|
re_refresh(el); /* print the prompt again */
|
|
|
|
break;
|
|
|
|
|
|
|
|
case CC_ERROR:
|
|
|
|
default: /* functions we don't know about */
|
1994-05-27 05:00:24 +00:00
|
|
|
#ifdef DEBUG_READ
|
2001-10-01 08:41:27 +00:00
|
|
|
(void) fprintf(el->el_errfile,
|
|
|
|
"*** editor ERROR ***\r\n\n");
|
1994-05-27 05:00:24 +00:00
|
|
|
#endif /* DEBUG_READ */
|
2001-10-01 08:41:27 +00:00
|
|
|
term_beep(el);
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el);
|
2001-10-01 08:41:27 +00:00
|
|
|
break;
|
|
|
|
}
|
2005-08-07 20:55:59 +00:00
|
|
|
el->el_state.argument = 1;
|
|
|
|
el->el_state.doingarg = 0;
|
|
|
|
el->el_chared.c_vcmd.action = NOP;
|
|
|
|
if (el->el_flags & UNBUFFERED)
|
|
|
|
break;
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|
2001-10-01 08:41:27 +00:00
|
|
|
|
2012-06-22 18:01:22 +00:00
|
|
|
term__flush(el); /* flush any buffered output */
|
2005-08-07 20:55:59 +00:00
|
|
|
/* make sure the tty is set up correctly */
|
|
|
|
if ((el->el_flags & UNBUFFERED) == 0) {
|
|
|
|
read_finish(el);
|
2012-06-22 18:01:22 +00:00
|
|
|
*nread = num != -1 ? num : 0;
|
2005-08-07 20:55:59 +00:00
|
|
|
} else {
|
2012-06-22 18:01:22 +00:00
|
|
|
*nread = (int)(el->el_line.lastchar - el->el_line.buffer);
|
2005-08-07 20:55:59 +00:00
|
|
|
}
|
2012-06-22 18:01:22 +00:00
|
|
|
done:
|
|
|
|
if (*nread == 0) {
|
|
|
|
if (num == -1) {
|
|
|
|
*nread = -1;
|
|
|
|
errno = el->el_errno;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
} else
|
|
|
|
return el->el_line.buffer;
|
1994-05-27 05:00:24 +00:00
|
|
|
}
|