e8420087b0
In some cases replace if (a == null) a = malloc(x); else a = realloc(a, x); with simple reallocf(a, x). Per ANSI-C, this is guaranteed to be the same thing. I've been running these on my system here w/o ill effects for some time. However, the CTM-express is at part 6 of 34 for the CAM changes, so I've not been able to do a build world with the CAM in the tree with these changes. Shouldn't impact anything, but...
339 lines
7.0 KiB
C
339 lines
7.0 KiB
C
/*-
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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.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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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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*/
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#if !defined(lint) && !defined(SCCSID)
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static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94";
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#endif /* not lint && not SCCSID */
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/*
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* el.c: EditLine interface functions
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*/
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#include "sys.h"
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#include <sys/types.h>
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#include <sys/param.h>
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#include <string.h>
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#include <stdlib.h>
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#if __STDC__
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# include <stdarg.h>
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#else
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# include <varargs.h>
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#endif
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#include "el.h"
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/* el_init():
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* Initialize editline and set default parameters.
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*/
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public EditLine *
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el_init(prog, fin, fout)
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const char *prog;
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FILE *fin, *fout;
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{
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EditLine *el = (EditLine *) el_malloc(sizeof(EditLine));
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#ifdef DEBUG
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char *tty;
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#endif
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if (el == NULL)
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return NULL;
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memset(el, 0, sizeof(EditLine));
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el->el_infd = fileno(fin);
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el->el_outfile = fout;
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el->el_prog = strdup(prog);
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#ifdef DEBUG
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if (issetugid() == 0 && (tty = getenv("DEBUGTTY")) != NULL) {
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el->el_errfile = fopen(tty, "w");
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if (el->el_errfile == NULL) {
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extern errno;
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(void) fprintf(stderr, "Cannot open %s (%s).\n",
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tty, strerror(errno));
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return NULL;
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}
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}
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else
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#endif
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el->el_errfile = stderr;
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/*
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* Initialize all the modules. Order is important!!!
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*/
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(void) term_init(el);
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(void) tty_init(el);
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(void) key_init(el);
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(void) map_init(el);
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(void) ch_init(el);
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(void) search_init(el);
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(void) hist_init(el);
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(void) prompt_init(el);
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(void) sig_init(el);
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el->el_flags = 0;
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return el;
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} /* end el_init */
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/* el_end():
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* Clean up.
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*/
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public void
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el_end(el)
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EditLine *el;
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{
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if (el == NULL)
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return;
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el_reset(el);
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term_end(el);
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tty_end(el);
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key_end(el);
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map_end(el);
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ch_end(el);
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search_end(el);
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hist_end(el);
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prompt_end(el);
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sig_end(el);
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el_free((ptr_t) el->el_prog);
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el_free((ptr_t) el);
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} /* end el_end */
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/* el_reset():
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* Reset the tty and the parser
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*/
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public void
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el_reset(el)
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EditLine *el;
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{
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tty_cookedmode(el);
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ch_reset(el); /* XXX: Do we want that? */
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}
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/* el_set():
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* set the editline parameters
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*/
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public int
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#if __STDC__
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el_set(EditLine *el, int op, ...)
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#else
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el_set(va_alist)
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va_dcl
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#endif
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{
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va_list va;
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int rv;
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#if __STDC__
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va_start(va, op);
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#else
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EditLine *el;
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int op;
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va_start(va);
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el = va_arg(va, EditLine *);
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op = va_arg(va, int);
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#endif
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switch (op) {
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case EL_PROMPT:
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rv = prompt_set(el, va_arg(va, el_pfunc_t));
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break;
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case EL_TERMINAL:
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rv = term_set(el, va_arg(va, char *));
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break;
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case EL_EDITOR:
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rv = map_set_editor(el, va_arg(va, char *));
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break;
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case EL_SIGNAL:
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if (va_arg(va, int))
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el->el_flags |= HANDLE_SIGNALS;
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else
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el->el_flags &= ~HANDLE_SIGNALS;
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rv = 0;
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break;
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case EL_BIND:
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case EL_TELLTC:
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case EL_SETTC:
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case EL_ECHOTC:
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case EL_SETTY:
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{
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char *argv[20];
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int i;
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for (i = 1; i < 20; i++)
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if ((argv[i] = va_arg(va, char *)) == NULL)
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break;
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switch (op) {
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case EL_BIND:
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argv[0] = "bind";
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rv = map_bind(el, i, argv);
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break;
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case EL_TELLTC:
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argv[0] = "telltc";
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rv = term_telltc(el, i, argv);
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break;
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case EL_SETTC:
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argv[0] = "settc";
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rv = term_settc(el, i, argv);
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break;
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case EL_ECHOTC:
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argv[0] = "echotc";
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rv = term_echotc(el, i, argv);
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break;
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case EL_SETTY:
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argv[0] = "setty";
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rv = tty_stty(el, i, argv);
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break;
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default:
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rv = -1;
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abort();
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break;
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}
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}
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break;
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case EL_ADDFN:
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{
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char *name = va_arg(va, char *);
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char *help = va_arg(va, char *);
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el_func_t func = va_arg(va, el_func_t);
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rv = map_addfunc(el, name, help, func);
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}
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break;
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case EL_HIST:
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{
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hist_fun_t func = va_arg(va, hist_fun_t);
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ptr_t ptr = va_arg(va, char *);
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rv = hist_set(el, func, ptr);
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}
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break;
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default:
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rv = -1;
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}
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va_end(va);
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return rv;
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} /* end el_set */
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/* el_line():
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* Return editing info
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*/
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public const LineInfo *
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el_line(el)
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EditLine *el;
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{
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return (const LineInfo *) &el->el_line;
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}
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static const char elpath[] = "/.editrc";
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/* el_source():
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* Source a file
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*/
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public int
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el_source(el, fname)
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EditLine *el;
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const char *fname;
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{
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FILE *fp;
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size_t len;
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char *ptr, path[MAXPATHLEN];
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if (fname == NULL) {
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fname = &elpath[1];
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if ((fp = fopen(fname, "r")) == NULL) {
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if (issetugid() != 0 || (ptr = getenv("HOME")) == NULL)
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return -1;
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(void)snprintf(path, sizeof(path), "%s%s", ptr, elpath);
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fname = path;
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}
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}
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if ((fp = fopen(fname, "r")) == NULL)
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return -1;
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while ((ptr = fgetln(fp, &len)) != NULL) {
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if (ptr[len - 1] == '\n')
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--len;
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ptr[len] = '\0';
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if (parse_line(el, ptr) == -1) {
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(void) fclose(fp);
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return -1;
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}
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}
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(void) fclose(fp);
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return 0;
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}
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/* el_resize():
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* Called from program when terminal is resized
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*/
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public void
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el_resize(el)
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EditLine *el;
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{
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int lins, cols;
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sigset_t oset, nset;
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(void) sigemptyset(&nset);
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(void) sigaddset(&nset, SIGWINCH);
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(void) sigprocmask(SIG_BLOCK, &nset, &oset);
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/* get the correct window size */
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if (term_get_size(el, &lins, &cols))
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term_change_size(el, lins, cols);
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(void) sigprocmask(SIG_SETMASK, &oset, NULL);
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}
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