freebsd-skq/lib/libedit/common.c
pfg 30eedb40f8 MFC r268502:
Sync some (mostly cosmetical) changes from NetBSD

Makefile,v 1.37
tc1.c v 1.3
Rename TEST/test.c tc1.c

common.c,v 1.23
pass lint on _LP64.

emacs.c,v 1.22
pass lint on _LP64.

filecomplete.h,v 1.8
mv NetBSD ID back from 1.9 as we don't
have the widecharacter support.

prompt.c,v 1.14
prompt.h,v 1.9
term.h,v 1.20
read.h,v 1.6
Update NetBSD version strings

sys.h,v 1.12
Misc sun stuff.

tty.c 1.31
handle EINTR in the termios operations
Allow a single process to control multiple ttys (for pthreads using _REENTRANT)
using multiple EditLine objects.
pass lint on _LP64.
Don't depend on side effects inside an assert

Obtained from:	NetBSD
2014-07-17 02:14:25 +00:00

914 lines
19 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. 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.
*
* $NetBSD: common.c,v 1.23 2009/02/27 04:18:45 msaitoh Exp $
*/
#if !defined(lint) && !defined(SCCSID)
static char sccsid[] = "@(#)common.c 8.1 (Berkeley) 6/4/93";
#endif /* not lint && not SCCSID */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* common.c: Common Editor functions
*/
#include "sys.h"
#include "el.h"
/* ed_end_of_file():
* Indicate end of file
* [^D]
*/
protected el_action_t
/*ARGSUSED*/
ed_end_of_file(EditLine *el, int c __unused)
{
re_goto_bottom(el);
*el->el_line.lastchar = '\0';
return (CC_EOF);
}
/* ed_insert():
* Add character to the line
* Insert a character [bound to all insert keys]
*/
protected el_action_t
ed_insert(EditLine *el, int c)
{
int count = el->el_state.argument;
if (c == '\0')
return (CC_ERROR);
if (el->el_line.lastchar + el->el_state.argument >=
el->el_line.limit) {
/* end of buffer space, try to allocate more */
if (!ch_enlargebufs(el, (size_t) count))
return CC_ERROR; /* error allocating more */
}
if (count == 1) {
if (el->el_state.inputmode == MODE_INSERT
|| el->el_line.cursor >= el->el_line.lastchar)
c_insert(el, 1);
*el->el_line.cursor++ = c;
re_fastaddc(el); /* fast refresh for one char. */
} else {
if (el->el_state.inputmode != MODE_REPLACE_1)
c_insert(el, el->el_state.argument);
while (count-- && el->el_line.cursor < el->el_line.lastchar)
*el->el_line.cursor++ = c;
re_refresh(el);
}
if (el->el_state.inputmode == MODE_REPLACE_1)
return vi_command_mode(el, 0);
return (CC_NORM);
}
/* ed_delete_prev_word():
* Delete from beginning of current word to cursor
* [M-^?] [^W]
*/
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_word(EditLine *el, int c __unused)
{
char *cp, *p, *kp;
if (el->el_line.cursor == el->el_line.buffer)
return (CC_ERROR);
cp = c__prev_word(el->el_line.cursor, el->el_line.buffer,
el->el_state.argument, ce__isword);
for (p = cp, kp = el->el_chared.c_kill.buf; p < el->el_line.cursor; p++)
*kp++ = *p;
el->el_chared.c_kill.last = kp;
c_delbefore(el, (int)(el->el_line.cursor - cp));/* delete before dot */
el->el_line.cursor = cp;
if (el->el_line.cursor < el->el_line.buffer)
el->el_line.cursor = el->el_line.buffer; /* bounds check */
return (CC_REFRESH);
}
/* ed_delete_next_char():
* Delete character under cursor
* [^D] [x]
*/
protected el_action_t
/*ARGSUSED*/
ed_delete_next_char(EditLine *el, int c)
{
#ifdef notdef /* XXX */
#define EL el->el_line
(void) fprintf(el->el_errlfile,
"\nD(b: %x(%s) c: %x(%s) last: %x(%s) limit: %x(%s)\n",
EL.buffer, EL.buffer, EL.cursor, EL.cursor, EL.lastchar,
EL.lastchar, EL.limit, EL.limit);
#endif
if (el->el_line.cursor == el->el_line.lastchar) {
/* if I'm at the end */
if (el->el_map.type == MAP_VI) {
if (el->el_line.cursor == el->el_line.buffer) {
/* if I'm also at the beginning */
#ifdef KSHVI
return (CC_ERROR);
#else
/* then do an EOF */
term_writechar(el, c);
return (CC_EOF);
#endif
} else {
#ifdef KSHVI
el->el_line.cursor--;
#else
return (CC_ERROR);
#endif
}
} else
return (CC_ERROR);
}
c_delafter(el, el->el_state.argument); /* delete after dot */
if (el->el_map.type == MAP_VI &&
el->el_line.cursor >= el->el_line.lastchar &&
el->el_line.cursor > el->el_line.buffer)
/* bounds check */
el->el_line.cursor = el->el_line.lastchar - 1;
return (CC_REFRESH);
}
/* ed_kill_line():
* Cut to the end of line
* [^K] [^K]
*/
protected el_action_t
/*ARGSUSED*/
ed_kill_line(EditLine *el, int c __unused)
{
char *kp, *cp;
cp = el->el_line.cursor;
kp = el->el_chared.c_kill.buf;
while (cp < el->el_line.lastchar)
*kp++ = *cp++; /* copy it */
el->el_chared.c_kill.last = kp;
/* zap! -- delete to end */
el->el_line.lastchar = el->el_line.cursor;
return (CC_REFRESH);
}
/* ed_move_to_end():
* Move cursor to the end of line
* [^E] [^E]
*/
protected el_action_t
/*ARGSUSED*/
ed_move_to_end(EditLine *el, int c __unused)
{
el->el_line.cursor = el->el_line.lastchar;
if (el->el_map.type == MAP_VI) {
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
}
return (CC_CURSOR);
}
/* ed_move_to_beg():
* Move cursor to the beginning of line
* [^A] [^A]
*/
protected el_action_t
/*ARGSUSED*/
ed_move_to_beg(EditLine *el, int c __unused)
{
el->el_line.cursor = el->el_line.buffer;
if (el->el_map.type == MAP_VI) {
/* We want FIRST non space character */
while (isspace((unsigned char) *el->el_line.cursor))
el->el_line.cursor++;
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
}
return (CC_CURSOR);
}
/* ed_transpose_chars():
* Exchange the character to the left of the cursor with the one under it
* [^T] [^T]
*/
protected el_action_t
ed_transpose_chars(EditLine *el, int c)
{
if (el->el_line.cursor < el->el_line.lastchar) {
if (el->el_line.lastchar <= &el->el_line.buffer[1])
return (CC_ERROR);
else
el->el_line.cursor++;
}
if (el->el_line.cursor > &el->el_line.buffer[1]) {
/* must have at least two chars entered */
c = el->el_line.cursor[-2];
el->el_line.cursor[-2] = el->el_line.cursor[-1];
el->el_line.cursor[-1] = c;
return (CC_REFRESH);
} else
return (CC_ERROR);
}
/* ed_next_char():
* Move to the right one character
* [^F] [^F]
*/
protected el_action_t
/*ARGSUSED*/
ed_next_char(EditLine *el, int c __unused)
{
char *lim = el->el_line.lastchar;
if (el->el_line.cursor >= lim ||
(el->el_line.cursor == lim - 1 &&
el->el_map.type == MAP_VI &&
el->el_chared.c_vcmd.action == NOP))
return (CC_ERROR);
el->el_line.cursor += el->el_state.argument;
if (el->el_line.cursor > lim)
el->el_line.cursor = lim;
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* ed_prev_word():
* Move to the beginning of the current word
* [M-b] [b]
*/
protected el_action_t
/*ARGSUSED*/
ed_prev_word(EditLine *el, int c __unused)
{
if (el->el_line.cursor == el->el_line.buffer)
return (CC_ERROR);
el->el_line.cursor = c__prev_word(el->el_line.cursor,
el->el_line.buffer,
el->el_state.argument,
ce__isword);
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
}
/* ed_prev_char():
* Move to the left one character
* [^B] [^B]
*/
protected el_action_t
/*ARGSUSED*/
ed_prev_char(EditLine *el, int c __unused)
{
if (el->el_line.cursor > el->el_line.buffer) {
el->el_line.cursor -= el->el_state.argument;
if (el->el_line.cursor < el->el_line.buffer)
el->el_line.cursor = el->el_line.buffer;
if (el->el_map.type == MAP_VI)
if (el->el_chared.c_vcmd.action != NOP) {
cv_delfini(el);
return (CC_REFRESH);
}
return (CC_CURSOR);
} else
return (CC_ERROR);
}
/* ed_quoted_insert():
* Add the next character typed verbatim
* [^V] [^V]
*/
protected el_action_t
ed_quoted_insert(EditLine *el, int c)
{
int num;
char tc;
tty_quotemode(el);
num = el_getc(el, &tc);
c = (unsigned char) tc;
tty_noquotemode(el);
if (num == 1)
return (ed_insert(el, c));
else
return (ed_end_of_file(el, 0));
}
/* ed_digit():
* Adds to argument or enters a digit
*/
protected el_action_t
ed_digit(EditLine *el, int c)
{
if (!isdigit((unsigned char) c))
return (CC_ERROR);
if (el->el_state.doingarg) {
/* if doing an arg, add this in... */
if (el->el_state.lastcmd == EM_UNIVERSAL_ARGUMENT)
el->el_state.argument = c - '0';
else {
if (el->el_state.argument > 1000000)
return (CC_ERROR);
el->el_state.argument =
(el->el_state.argument * 10) + (c - '0');
}
return (CC_ARGHACK);
}
return ed_insert(el, c);
}
/* ed_argument_digit():
* Digit that starts argument
* For ESC-n
*/
protected el_action_t
ed_argument_digit(EditLine *el, int c)
{
if (!isdigit((unsigned char) c))
return (CC_ERROR);
if (el->el_state.doingarg) {
if (el->el_state.argument > 1000000)
return (CC_ERROR);
el->el_state.argument = (el->el_state.argument * 10) +
(c - '0');
} else { /* else starting an argument */
el->el_state.argument = c - '0';
el->el_state.doingarg = 1;
}
return (CC_ARGHACK);
}
/* ed_unassigned():
* Indicates unbound character
* Bound to keys that are not assigned
*/
protected el_action_t
/*ARGSUSED*/
ed_unassigned(EditLine *el, int c __unused)
{
return (CC_ERROR);
}
/**
** TTY key handling.
**/
/* ed_tty_sigint():
* Tty interrupt character
* [^C]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_sigint(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_dsusp():
* Tty delayed suspend character
* [^Y]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_dsusp(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_flush_output():
* Tty flush output characters
* [^O]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_flush_output(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_sigquit():
* Tty quit character
* [^\]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_sigquit(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_sigtstp():
* Tty suspend character
* [^Z]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_sigtstp(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_stop_output():
* Tty disallow output characters
* [^S]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_stop_output(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_tty_start_output():
* Tty allow output characters
* [^Q]
*/
protected el_action_t
/*ARGSUSED*/
ed_tty_start_output(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_newline():
* Execute command
* [^J]
*/
protected el_action_t
/*ARGSUSED*/
ed_newline(EditLine *el, int c __unused)
{
re_goto_bottom(el);
*el->el_line.lastchar++ = '\n';
*el->el_line.lastchar = '\0';
return (CC_NEWLINE);
}
/* ed_delete_prev_char():
* Delete the character to the left of the cursor
* [^?]
*/
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_char(EditLine *el, int c __unused)
{
if (el->el_line.cursor <= el->el_line.buffer)
return (CC_ERROR);
c_delbefore(el, el->el_state.argument);
el->el_line.cursor -= el->el_state.argument;
if (el->el_line.cursor < el->el_line.buffer)
el->el_line.cursor = el->el_line.buffer;
return (CC_REFRESH);
}
/* ed_clear_screen():
* Clear screen leaving current line at the top
* [^L]
*/
protected el_action_t
/*ARGSUSED*/
ed_clear_screen(EditLine *el, int c __unused)
{
term_clear_screen(el); /* clear the whole real screen */
re_clear_display(el); /* reset everything */
return (CC_REFRESH);
}
/* ed_redisplay():
* Redisplay everything
* ^R
*/
protected el_action_t
/*ARGSUSED*/
ed_redisplay(EditLine *el __unused,
int c __unused)
{
return (CC_REDISPLAY);
}
/* ed_start_over():
* Erase current line and start from scratch
* [^G]
*/
protected el_action_t
/*ARGSUSED*/
ed_start_over(EditLine *el, int c __unused)
{
ch_reset(el, 0);
return (CC_REFRESH);
}
/* ed_sequence_lead_in():
* First character in a bound sequence
* Placeholder for external keys
*/
protected el_action_t
/*ARGSUSED*/
ed_sequence_lead_in(EditLine *el __unused,
int c __unused)
{
return (CC_NORM);
}
/* ed_prev_history():
* Move to the previous history line
* [^P] [k]
*/
protected el_action_t
/*ARGSUSED*/
ed_prev_history(EditLine *el, int c __unused)
{
char beep = 0;
int sv_event = el->el_history.eventno;
el->el_chared.c_undo.len = -1;
*el->el_line.lastchar = '\0'; /* just in case */
if (el->el_history.eventno == 0) { /* save the current buffer
* away */
(void) strncpy(el->el_history.buf, el->el_line.buffer,
EL_BUFSIZ);
el->el_history.last = el->el_history.buf +
(el->el_line.lastchar - el->el_line.buffer);
}
el->el_history.eventno += el->el_state.argument;
if (hist_get(el) == CC_ERROR) {
if (el->el_map.type == MAP_VI) {
el->el_history.eventno = sv_event;
return CC_ERROR;
}
beep = 1;
/* el->el_history.eventno was fixed by first call */
(void) hist_get(el);
}
if (beep)
return CC_REFRESH_BEEP;
return CC_REFRESH;
}
/* ed_next_history():
* Move to the next history line
* [^N] [j]
*/
protected el_action_t
/*ARGSUSED*/
ed_next_history(EditLine *el, int c __unused)
{
el_action_t beep = CC_REFRESH, rval;
el->el_chared.c_undo.len = -1;
*el->el_line.lastchar = '\0'; /* just in case */
el->el_history.eventno -= el->el_state.argument;
if (el->el_history.eventno < 0) {
el->el_history.eventno = 0;
beep = CC_REFRESH_BEEP;
}
rval = hist_get(el);
if (rval == CC_REFRESH)
return beep;
return rval;
}
/* ed_search_prev_history():
* Search previous in history for a line matching the current
* next search history [M-P] [K]
*/
protected el_action_t
/*ARGSUSED*/
ed_search_prev_history(EditLine *el, int c __unused)
{
const char *hp;
int h;
bool_t found = 0;
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_undo.len = -1;
*el->el_line.lastchar = '\0'; /* just in case */
if (el->el_history.eventno < 0) {
#ifdef DEBUG_EDIT
(void) fprintf(el->el_errfile,
"e_prev_search_hist(): eventno < 0;\n");
#endif
el->el_history.eventno = 0;
return (CC_ERROR);
}
if (el->el_history.eventno == 0) {
(void) strncpy(el->el_history.buf, el->el_line.buffer,
EL_BUFSIZ);
el->el_history.last = el->el_history.buf +
(el->el_line.lastchar - el->el_line.buffer);
}
if (el->el_history.ref == NULL)
return (CC_ERROR);
hp = HIST_FIRST(el);
if (hp == NULL)
return (CC_ERROR);
c_setpat(el); /* Set search pattern !! */
for (h = 1; h <= el->el_history.eventno; h++)
hp = HIST_NEXT(el);
while (hp != NULL) {
#ifdef SDEBUG
(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
if ((strncmp(hp, el->el_line.buffer, (size_t)
(el->el_line.lastchar - el->el_line.buffer)) ||
hp[el->el_line.lastchar - el->el_line.buffer]) &&
c_hmatch(el, hp)) {
found++;
break;
}
h++;
hp = HIST_NEXT(el);
}
if (!found) {
#ifdef SDEBUG
(void) fprintf(el->el_errfile, "not found\n");
#endif
return (CC_ERROR);
}
el->el_history.eventno = h;
return (hist_get(el));
}
/* ed_search_next_history():
* Search next in history for a line matching the current
* [M-N] [J]
*/
protected el_action_t
/*ARGSUSED*/
ed_search_next_history(EditLine *el, int c __unused)
{
const char *hp;
int h;
bool_t found = 0;
el->el_chared.c_vcmd.action = NOP;
el->el_chared.c_undo.len = -1;
*el->el_line.lastchar = '\0'; /* just in case */
if (el->el_history.eventno == 0)
return (CC_ERROR);
if (el->el_history.ref == NULL)
return (CC_ERROR);
hp = HIST_FIRST(el);
if (hp == NULL)
return (CC_ERROR);
c_setpat(el); /* Set search pattern !! */
for (h = 1; h < el->el_history.eventno && hp; h++) {
#ifdef SDEBUG
(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
if ((strncmp(hp, el->el_line.buffer, (size_t)
(el->el_line.lastchar - el->el_line.buffer)) ||
hp[el->el_line.lastchar - el->el_line.buffer]) &&
c_hmatch(el, hp))
found = h;
hp = HIST_NEXT(el);
}
if (!found) { /* is it the current history number? */
if (!c_hmatch(el, el->el_history.buf)) {
#ifdef SDEBUG
(void) fprintf(el->el_errfile, "not found\n");
#endif
return (CC_ERROR);
}
}
el->el_history.eventno = found;
return (hist_get(el));
}
/* ed_prev_line():
* Move up one line
* Could be [k] [^p]
*/
protected el_action_t
/*ARGSUSED*/
ed_prev_line(EditLine *el, int c __unused)
{
char *ptr;
int nchars = c_hpos(el);
/*
* Move to the line requested
*/
if (*(ptr = el->el_line.cursor) == '\n')
ptr--;
for (; ptr >= el->el_line.buffer; ptr--)
if (*ptr == '\n' && --el->el_state.argument <= 0)
break;
if (el->el_state.argument > 0)
return (CC_ERROR);
/*
* Move to the beginning of the line
*/
for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
continue;
/*
* Move to the character requested
*/
for (ptr++;
nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
ptr++)
continue;
el->el_line.cursor = ptr;
return (CC_CURSOR);
}
/* ed_next_line():
* Move down one line
* Could be [j] [^n]
*/
protected el_action_t
/*ARGSUSED*/
ed_next_line(EditLine *el, int c __unused)
{
char *ptr;
int nchars = c_hpos(el);
/*
* Move to the line requested
*/
for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
if (*ptr == '\n' && --el->el_state.argument <= 0)
break;
if (el->el_state.argument > 0)
return (CC_ERROR);
/*
* Move to the character requested
*/
for (ptr++;
nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
ptr++)
continue;
el->el_line.cursor = ptr;
return (CC_CURSOR);
}
/* ed_command():
* Editline extended command
* [M-X] [:]
*/
protected el_action_t
/*ARGSUSED*/
ed_command(EditLine *el, int c __unused)
{
char tmpbuf[EL_BUFSIZ];
int tmplen;
tmplen = c_gets(el, tmpbuf, "\n: ");
term__putc(el, '\n');
if (tmplen < 0 || (tmpbuf[tmplen] = 0, parse_line(el, tmpbuf)) == -1)
term_beep(el);
el->el_map.current = el->el_map.key;
re_clear_display(el);
return CC_REFRESH;
}