freebsd-dev/lib/libedit/el.c
Matthew N. Dodd 90cc1fbc53 Add 2 functions: el_data_set() and el_data_get() which do what you
would expect.  (Allow user data to be associated with an EditLine context).

As this changes no existing interfaces and doesn't alter any structs
visable to the user I've been told that its not necessary to bump
the version of the library.
1999-08-20 01:17:12 +00:00

359 lines
7.2 KiB
C

/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Christos Zoulas of Cornell University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#if !defined(lint) && !defined(SCCSID)
static char sccsid[] = "@(#)el.c 8.2 (Berkeley) 1/3/94";
#endif /* not lint && not SCCSID */
/*
* el.c: EditLine interface functions
*/
#include "sys.h"
#include <sys/types.h>
#include <sys/param.h>
#include <string.h>
#include <stdlib.h>
#if __STDC__
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include "el.h"
/* el_init():
* Initialize editline and set default parameters.
*/
public EditLine *
el_init(prog, fin, fout)
const char *prog;
FILE *fin, *fout;
{
EditLine *el = (EditLine *) el_malloc(sizeof(EditLine));
#ifdef DEBUG
char *tty;
#endif
if (el == NULL)
return NULL;
memset(el, 0, sizeof(EditLine));
el->el_infd = fileno(fin);
el->el_outfile = fout;
el->el_prog = strdup(prog);
#ifdef DEBUG
if (issetugid() == 0 && (tty = getenv("DEBUGTTY")) != NULL) {
el->el_errfile = fopen(tty, "w");
if (el->el_errfile == NULL) {
extern errno;
(void) fprintf(stderr, "Cannot open %s (%s).\n",
tty, strerror(errno));
return NULL;
}
}
else
#endif
el->el_errfile = stderr;
/*
* Initialize all the modules. Order is important!!!
*/
(void) term_init(el);
(void) tty_init(el);
(void) key_init(el);
(void) map_init(el);
(void) ch_init(el);
(void) search_init(el);
(void) hist_init(el);
(void) prompt_init(el);
(void) sig_init(el);
el->el_flags = 0;
el->data = NULL;
return el;
} /* end el_init */
/* el_end():
* Clean up.
*/
public void
el_end(el)
EditLine *el;
{
if (el == NULL)
return;
el_reset(el);
term_end(el);
tty_end(el);
key_end(el);
map_end(el);
ch_end(el);
search_end(el);
hist_end(el);
prompt_end(el);
sig_end(el);
el_free((ptr_t) el->el_prog);
el_free((ptr_t) el);
} /* end el_end */
/* el_reset():
* Reset the tty and the parser
*/
public void
el_reset(el)
EditLine *el;
{
tty_cookedmode(el);
ch_reset(el); /* XXX: Do we want that? */
}
/* el_set():
* set the editline parameters
*/
public int
#if __STDC__
el_set(EditLine *el, int op, ...)
#else
el_set(va_alist)
va_dcl
#endif
{
va_list va;
int rv;
#if __STDC__
va_start(va, op);
#else
EditLine *el;
int op;
va_start(va);
el = va_arg(va, EditLine *);
op = va_arg(va, int);
#endif
switch (op) {
case EL_PROMPT:
rv = prompt_set(el, va_arg(va, el_pfunc_t));
break;
case EL_TERMINAL:
rv = term_set(el, va_arg(va, char *));
break;
case EL_EDITOR:
rv = map_set_editor(el, va_arg(va, char *));
break;
case EL_SIGNAL:
if (va_arg(va, int))
el->el_flags |= HANDLE_SIGNALS;
else
el->el_flags &= ~HANDLE_SIGNALS;
rv = 0;
break;
case EL_BIND:
case EL_TELLTC:
case EL_SETTC:
case EL_ECHOTC:
case EL_SETTY:
{
char *argv[20];
int i;
for (i = 1; i < 20; i++)
if ((argv[i] = va_arg(va, char *)) == NULL)
break;
switch (op) {
case EL_BIND:
argv[0] = "bind";
rv = map_bind(el, i, argv);
break;
case EL_TELLTC:
argv[0] = "telltc";
rv = term_telltc(el, i, argv);
break;
case EL_SETTC:
argv[0] = "settc";
rv = term_settc(el, i, argv);
break;
case EL_ECHOTC:
argv[0] = "echotc";
rv = term_echotc(el, i, argv);
break;
case EL_SETTY:
argv[0] = "setty";
rv = tty_stty(el, i, argv);
break;
default:
rv = -1;
abort();
break;
}
}
break;
case EL_ADDFN:
{
char *name = va_arg(va, char *);
char *help = va_arg(va, char *);
el_func_t func = va_arg(va, el_func_t);
rv = map_addfunc(el, name, help, func);
}
break;
case EL_HIST:
{
hist_fun_t func = va_arg(va, hist_fun_t);
ptr_t ptr = va_arg(va, char *);
rv = hist_set(el, func, ptr);
}
break;
default:
rv = -1;
}
va_end(va);
return rv;
} /* end el_set */
/* el_line():
* Return editing info
*/
public const LineInfo *
el_line(el)
EditLine *el;
{
return (const LineInfo *) &el->el_line;
}
static const char elpath[] = "/.editrc";
/* el_source():
* Source a file
*/
public int
el_source(el, fname)
EditLine *el;
const char *fname;
{
FILE *fp;
size_t len;
char *ptr, path[MAXPATHLEN];
if (fname == NULL) {
fname = &elpath[1];
if ((fp = fopen(fname, "r")) == NULL) {
if (issetugid() != 0 || (ptr = getenv("HOME")) == NULL)
return -1;
(void)snprintf(path, sizeof(path), "%s%s", ptr, elpath);
fname = path;
}
}
if ((fp = fopen(fname, "r")) == NULL)
return -1;
while ((ptr = fgetln(fp, &len)) != NULL) {
if (ptr[len - 1] == '\n')
--len;
ptr[len] = '\0';
if (parse_line(el, ptr) == -1) {
(void) fclose(fp);
return -1;
}
}
(void) fclose(fp);
return 0;
}
/* el_resize():
* Called from program when terminal is resized
*/
public void
el_resize(el)
EditLine *el;
{
int lins, cols;
sigset_t oset, nset;
(void) sigemptyset(&nset);
(void) sigaddset(&nset, SIGWINCH);
(void) sigprocmask(SIG_BLOCK, &nset, &oset);
/* get the correct window size */
if (term_get_size(el, &lins, &cols))
term_change_size(el, lins, cols);
(void) sigprocmask(SIG_SETMASK, &oset, NULL);
}
public void
el_data_set (el, data)
EditLine *el;
void *data;
{
el->data = data;
return;
}
public void *
el_data_get (el)
EditLine *el;
{
if (el->data)
return (el->data);
return (NULL);
}