1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
4 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
5 * Copyright (c) 2012 - 2014 Steffen "Daode" Nurpmeso <sdaoden@users.sf.net>.
8 * Copyright (c) 1980, 1993
9 * The Regents of the University of California. All rights reserved.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
41 * Copyright (c) 2013 - 2014 Steffen "Daode" Nurpmeso <sdaoden@users.sf.net>.
43 * Permission to use, copy, modify, and/or distribute this software for any
44 * purpose with or without fee is hereby granted, provided that the above
45 * copyright notice and this permission notice appear in all copies.
47 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
48 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
49 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
50 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
51 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
52 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
53 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
56 #ifndef HAVE_AMALGAMATION
61 # include <readline/readline.h>
63 # include <readline/history.h>
65 #elif defined HAVE_EDITLINE
66 # include <histedit.h>
69 /* Shared history support macros */
71 # define _CL_HISTFILE(S) \
73 S = ok_vlook(NAIL_HISTFILE);\
75 S = fexpand(S, FEXP_LOCAL);\
78 # define _CL_HISTSIZE(V) \
80 char const *__sv = ok_vlook(NAIL_HISTSIZE);\
82 if (__sv == NULL || *__sv == '\0' || (__rv = strtol(__sv, NULL, 10)) == 0)\
90 # define _CL_CHECK_ADDHIST(S,NOACT) \
101 # define C_HISTORY_SHARED \
108 if (argv[1] != NULL)\
110 if (asccasecmp(*argv, "show") == 0)\
112 if (asccasecmp(*argv, "clear") == 0)\
114 if ((entry = strtol(*argv, argv, 10)) > 0 && **argv == '\0')\
117 fprintf(stderr, "Synopsis: history: %s\n", tr(431,\
118 "<show> (default), <clear> or select <NO> from editor history"));\
122 return (v == NULL ? !STOP : !OKAY); /* xxx 1:bad 0:good -- do some */
123 #endif /* HAVE_HISTORY */
125 /* fexpand() flags for expand-on-tab */
126 #define _CL_TAB_FEXP_FL (FEXP_FULL | FEXP_SILENT | FEXP_MULTIOK)
129 * Because we have multiple identical implementations, change file layout a bit
130 * and place the implementations one after the other below the other externals
134 getapproval(char const *prompt
, bool_t noninteract_default
)
139 if (!(options
& OPT_INTERACTIVE
)) {
140 rv
= noninteract_default
;
145 prompt
= tr(264, "Continue (y/n)? ");
148 if (readline_input(prompt
, FAL0
, &termios_state
.ts_linebuf
,
149 &termios_state
.ts_linesize
, NULL
) >= 0)
150 switch (termios_state
.ts_linebuf
[0]) {
158 termios_state_reset();
165 yorn(char const *msg
) /* TODO obsolete */
170 rv
= getapproval(msg
, TRU1
);
176 getuser(char const *query
)
182 query
= tr(509, "User: ");
184 if (readline_input(query
, FAL0
, &termios_state
.ts_linebuf
,
185 &termios_state
.ts_linesize
, NULL
) >= 0)
186 user
= termios_state
.ts_linebuf
;
187 termios_state_reset();
193 getpassword(char const *query
) /* FIXME encaps ttystate signal safe */
200 query
= tr(510, "Password: ");
201 fputs(query
, stdout
);
204 /* FIXME everywhere: tcsetattr() generates SIGTTOU when we're not in
205 * FIXME foreground pgrp, and can fail with EINTR!! */
206 if (options
& OPT_TTYIN
) {
207 tcgetattr(STDIN_FILENO
, &termios_state
.ts_tios
);
208 memcpy(&tios
, &termios_state
.ts_tios
, sizeof tios
);
209 termios_state
.ts_needs_reset
= TRU1
;
210 tios
.c_iflag
&= ~(ISTRIP
);
211 tios
.c_lflag
&= ~(ECHO
| ECHOE
| ECHOK
| ECHONL
);
212 tcsetattr(STDIN_FILENO
, TCSAFLUSH
, &tios
);
215 if (readline_restart(stdin
, &termios_state
.ts_linebuf
,
216 &termios_state
.ts_linesize
, 0) >= 0)
217 pass
= termios_state
.ts_linebuf
;
218 termios_state_reset();
220 if (options
& OPT_TTYIN
)
227 getcredentials(char **user
, char **pass
)
230 char *u
= *user
, *p
= *pass
;
234 if ((u
= getuser(NULL
)) == NULL
)
242 if ((p
= getpassword(NULL
)) == NULL
)
255 static sighandler_type _rl_shup
;
256 static char * _rl_buf
; /* pre_input() hook: initial line */
257 static int _rl_buflen
; /* content, and its length */
259 static int _rl_pre_input(void);
265 /* Handle leftover data from \ escaped former line */
266 rl_extend_line_buffer(_rl_buflen
+ 10);
267 memcpy(rl_line_buffer
, _rl_buf
, _rl_buflen
+ 1);
268 rl_point
= rl_end
= _rl_buflen
;
269 rl_pre_input_hook
= (rl_hook_func_t
*)NULL
;
284 rl_readline_name
= UNCONST(uagent
);
288 stifle_history((int)hs
);
290 rl_read_init_file(NULL
);
292 /* Because rl_read_init_file() may have introduced yet a different
293 * history size limit, simply load and incorporate the history, leave
294 * it up to readline(3) to do the rest */
323 NYD_X
; /* Signal handler */
331 /* readline(3) doesn't catch it :( */
332 rl_free_line_state();
333 rl_cleanup_after_signal();
334 safe_signal(SIGHUP
, _rl_shup
);
336 sigaddset(&nset
, sig
);
337 sigprocmask(SIG_UNBLOCK
, &nset
, &oset
);
339 /* XXX When we come here we'll continue editing, so reestablish
340 * XXX cannot happen */
341 sigprocmask(SIG_BLOCK
, &oset
, (sigset_t
*)NULL
);
342 _rl_shup
= safe_signal(SIGHUP
, &tty_signal
);
343 rl_reset_after_signal();
351 (tty_readline
)(char const *prompt
, char **linebuf
, size_t *linesize
, size_t n
361 rl_pre_input_hook
= &_rl_pre_input
;
364 _rl_shup
= safe_signal(SIGHUP
, &tty_signal
);
365 line
= readline(prompt
!= NULL
? prompt
: "");
366 safe_signal(SIGHUP
, _rl_shup
);
374 if (n
>= *linesize
) {
375 *linesize
= LINESIZE
+ n
+ 1;
376 *linebuf
= (srealloc
)(*linebuf
, *linesize SMALLOC_DEBUG_ARGSCALL
);
378 memcpy(*linebuf
, line
, n
);
380 (*linebuf
)[n
] = '\0';
388 tty_addhist(char const *s
)
393 _CL_CHECK_ADDHIST(s
, goto jleave
);
394 hold_all_sigs(); /* XXX too heavy */
395 add_history(s
); /* XXX yet we jump away! */
396 rele_all_sigs(); /* XXX remove jumps */
414 if ((fp
= Ftmp(NULL
, "hist", OF_RDWR
| OF_UNLINK
| OF_REGISTER
, 0600)) ==
421 hs
= history_get_history_state();
423 for (i
= (ul_it
)hs
->length
, hl
= hs
->entries
+ i
, b
= 0; i
> 0; --i
) {
424 char *cp
= (*--hl
)->line
;
425 size_t sl
= strlen(cp
);
426 fprintf(fp
, "%4lu. %-50.50s (%4lu+%lu bytes)\n", i
, cp
, b
, sl
);
430 page_or_print(fp
, (size_t)hs
->length
);
440 HISTORY_STATE
*hs
= history_get_history_state();
442 if (UICMP(z
, entry
, <=, hs
->length
))
443 v
= temporary_arg_v_store
= hs
->entries
[entry
- 1]->line
;
449 # endif /* HAVE_HISTORY */
450 #endif /* HAVE_READLINE */
457 static EditLine
* _el_el
; /* editline(3) handle */
458 static char const * _el_prompt
; /* Current prompt */
460 static History
* _el_hcom
; /* History handle for commline */
463 static char const * _el_getprompt(void);
483 _el_hcom
= history_init();
484 history(_el_hcom
, &he
, H_SETSIZE
, (int)hs
);
485 /* We unroll our own one history(_el_hcom, &he, H_SETUNIQUE, 1);*/
488 _el_el
= el_init(uagent
, stdin
, stdout
, stderr
);
489 el_set(_el_el
, EL_SIGNAL
, 1);
490 el_set(_el_el
, EL_TERMINAL
, NULL
);
491 /* Need to set HIST before EDITOR, otherwise it won't work automatic */
493 el_set(_el_el
, EL_HIST
, &history
, _el_hcom
);
495 el_set(_el_el
, EL_EDITOR
, "emacs");
496 # ifdef EL_PROMPT_ESC
497 el_set(_el_el
, EL_PROMPT_ESC
, &_el_getprompt
, '\1');
499 el_set(_el_el
, EL_PROMPT
, &_el_getprompt
);
502 el_set(_el_el
, EL_ADDFN
, "tab_complete",
503 "editline(3) internal completion function", &_el_file_cpl
);
504 el_set(_el_el
, EL_BIND
, "^I", "tab_complete", NULL
);
507 el_set(_el_el
, EL_BIND
, "^R", "ed-search-prev-history", NULL
);
509 el_source(_el_el
, NULL
); /* Source ~/.editrc */
511 /* Because el_source() may have introduced yet a different history size
512 * limit, simply load and incorporate the history, leave it up to
513 * editline(3) to do the rest */
517 history(_el_hcom
, &he
, H_LOAD
, v
);
536 history(_el_hcom
, &he
, H_SAVE
, v
);
537 history_end(_el_hcom
);
545 NYD_X
; /* Signal handler */
558 (tty_readline
)(char const *prompt
, char **linebuf
, size_t *linesize
, size_t n
565 _el_prompt
= (prompt
!= NULL
) ? prompt
: "";
567 el_push(_el_el
, *linebuf
);
568 line
= el_gets(_el_el
, &nn
);
576 if (n
> 0 && line
[n
- 1] == '\n')
579 if (n
>= *linesize
) {
580 *linesize
= LINESIZE
+ n
+ 1;
581 *linebuf
= (srealloc
)(*linebuf
, *linesize SMALLOC_DEBUG_ARGSCALL
);
583 memcpy(*linebuf
, line
, n
);
584 (*linebuf
)[n
] = '\0';
591 tty_addhist(char const *s
)
594 /* Enlarge meaning of unique .. to something that rocks;
595 * xxx unfortunately this is expensive to do with editline(3)
596 * xxx maybe it would be better to hook the ptfs instead? */
604 _CL_CHECK_ADDHIST(s
, goto jleave
);
606 hold_all_sigs(); /* XXX too heavy, yet we jump away! */
607 for (i
= history(_el_hcom
, &he
, H_FIRST
); i
>= 0;
608 i
= history(_el_hcom
, &he
, H_NEXT
))
609 if (strcmp(he
.str
, s
) == 0) {
610 history(_el_hcom
, &he
, H_DEL
, he
.num
);
613 history(_el_hcom
, &he
, H_ENTER
, s
);
614 rele_all_sigs(); /* XXX remove jumps */
632 if ((fp
= Ftmp(NULL
, "hist", OF_RDWR
| OF_UNLINK
| OF_REGISTER
, 0600)) ==
639 i
= (size_t)((history(_el_hcom
, &he
, H_GETSIZE
) >= 0) ? he
.num
: 0);
641 for (x
= history(_el_hcom
, &he
, H_FIRST
); x
>= 0;
642 x
= history(_el_hcom
, &he
, H_NEXT
)) {
643 size_t sl
= strlen(he
.str
);
644 fprintf(fp
, "%4lu. %-50.50s (%4lu+%lu bytes)\n",
645 (ul_it
)i
, he
.str
, (ul_it
)b
, (ul_it
)sl
);
650 page_or_print(fp
, i
);
657 history(_el_hcom
, &he
, H_CLEAR
);
666 i
= (size_t)((history(_el_hcom
, &he
, H_GETSIZE
) >= 0) ? he
.num
: 0);
667 if (UICMP(z
, entry
, <=, i
)) {
668 entry
= (long)i
- entry
;
669 for (x
= history(_el_hcom
, &he
, H_FIRST
); x
>= 0;
670 x
= history(_el_hcom
, &he
, H_NEXT
))
672 v
= temporary_arg_v_store
= UNCONST(he
.str
);
680 # endif /* HAVE_HISTORY */
681 #endif /* HAVE_EDITLINE */
684 * NCL: our homebrew version (inspired from NetBSD sh(1) / dash(1)s hetio.c).
686 * Only used in interactive mode, simply use STDIN_FILENO as point of interest.
687 * We do not handle character widths because the terminal must deal with that
688 * anyway on the one hand, and also wcwidth(3) doesn't support zero-width
689 * characters by definition on the other. We're addicted.
691 * To avoid memory leaks etc. with the current codebase that simply longjmp(3)s
692 * we're forced to use the very same buffer--the one that is passed through to
693 * us from the outside--to store anything we need, i.e., a `struct cell[]', and
694 * convert that on-the-fly back to the plain char* result once we're done.
695 * To simplify our live, use savestr() buffers for all other needed memory
699 * TODO NCL: don't use that stupid .sint=-1 stuff, but simply block all signals
700 * TODO NCL: during handler de-/installation handling.
705 # define MAX_INPUT 255 /* (_POSIX_MAX_INPUT = 255 as of Issue 7 TC1) */
708 /* Since we simply fputs(3) the prompt, assume each character requires two
709 * visual cells -- and we need to restrict the maximum prompt size because
710 * of MAX_INPUT and our desire to have room for some error message left */
711 # define _PROMPT_VLEN(P) (strlen(P) * 2)
712 # define _PROMPT_MAX ((MAX_INPUT / 2) + (MAX_INPUT / 4))
715 sighandler_type shdl
; /* Try avoid races by setting */
716 sl_it sint
; /* .sint=-1 when inactive */
718 CTA(sizeof(sl_it
) >= sizeof(sighandler_type
));
728 char cbuf
[MB_LEN_MAX
* 2]; /* .. plus reset shift sequence */
732 size_t cursor
; /* Current cursor position */
733 size_t topins
; /* Outermost cursor col set */
735 char * cbuf
; /* *x_buf */
738 struct str defc
; /* Current default content */
739 struct str savec
; /* Saved default content */
741 struct hist
* hist
; /* History cursor */
744 char const * nd
; /* Cursor right */
745 char ** x_buf
; /* Caller pointers */
752 struct hist
* younger
;
754 char dat
[VFIELD_SIZE(sizeof(size_t))];
758 static union xsighdl _ncl_oint
;
759 static union xsighdl _ncl_oquit
;
760 static union xsighdl _ncl_oterm
;
761 static union xsighdl _ncl_ohup
;
762 static union xsighdl _ncl_otstp
;
763 static union xsighdl _ncl_ottin
;
764 static union xsighdl _ncl_ottou
;
765 static struct xtios _ncl_tios
;
767 static struct hist
* _ncl_hist
;
768 static struct hist
* _ncl_hist_tail
;
769 static size_t _ncl_hist_size
;
770 static size_t _ncl_hist_size_max
;
771 static bool_t _ncl_hist_load
;
774 static void _ncl_sigs_up(void);
775 static void _ncl_sigs_down(void);
777 static void _ncl_term_mode(bool_t raw
);
779 static void _ncl_check_grow(struct line
*l
, size_t no SMALLOC_DEBUG_ARGS
);
780 static void _ncl_bs_eof_dvup(struct cell
*cap
, size_t i
);
781 static ssize_t
_ncl_wboundary(struct line
*l
, ssize_t dir
);
782 static ssize_t
_ncl_cell2dat(struct line
*l
);
783 # if defined HAVE_HISTORY || defined HAVE_TABEXPAND
784 static void _ncl_cell2save(struct line
*l
);
787 static void _ncl_khome(struct line
*l
, bool_t dobell
);
788 static void _ncl_kend(struct line
*l
);
789 static void _ncl_kbs(struct line
*l
);
790 static void _ncl_kkill(struct line
*l
, bool_t dobell
);
791 static ssize_t
_ncl_keof(struct line
*l
);
792 static void _ncl_kleft(struct line
*l
);
793 static void _ncl_kright(struct line
*l
);
794 static void _ncl_krefresh(struct line
*l
);
795 static void _ncl_kbwddelw(struct line
*l
);
796 static void _ncl_kgow(struct line
*l
, ssize_t dir
);
797 static void _ncl_kother(struct line
*l
, wchar_t wc
);
799 static size_t __ncl_khist_shared(struct line
*l
, struct hist
*hp
);
800 static size_t _ncl_khist(struct line
*l
, bool_t backwd
);
801 static size_t _ncl_krhist(struct line
*l
);
803 # ifdef HAVE_TABEXPAND
804 static size_t _ncl_kht(struct line
*l
);
806 static ssize_t
_ncl_readline(char const *prompt
, char **buf
, size_t *bufsize
,
807 size_t len SMALLOC_DEBUG_ARGS
);
813 if (_ncl_oint
.sint
== -1)
814 _ncl_oint
.shdl
= safe_signal(SIGINT
, &tty_signal
);
815 if (_ncl_oquit
.sint
== -1)
816 _ncl_oquit
.shdl
= safe_signal(SIGQUIT
, &tty_signal
);
817 if (_ncl_oterm
.sint
== -1)
818 _ncl_oterm
.shdl
= safe_signal(SIGTERM
, &tty_signal
);
819 if (_ncl_ohup
.sint
== -1)
820 _ncl_ohup
.shdl
= safe_signal(SIGHUP
, &tty_signal
);
821 if (_ncl_otstp
.sint
== -1)
822 _ncl_otstp
.shdl
= safe_signal(SIGTSTP
, &tty_signal
);
823 if (_ncl_ottin
.sint
== -1)
824 _ncl_ottin
.shdl
= safe_signal(SIGTTIN
, &tty_signal
);
825 if (_ncl_ottou
.sint
== -1)
826 _ncl_ottou
.shdl
= safe_signal(SIGTTOU
, &tty_signal
);
833 /* aaah.. atomic cas would be nice (but isn't it all redundant?) */
837 if (_ncl_ottou
.sint
!= -1) {
838 st
= _ncl_ottou
.shdl
, _ncl_ottou
.sint
= -1;
839 safe_signal(SIGTTOU
, st
);
841 if (_ncl_ottin
.sint
!= -1) {
842 st
= _ncl_ottin
.shdl
, _ncl_ottin
.sint
= -1;
843 safe_signal(SIGTTIN
, st
);
845 if (_ncl_otstp
.sint
!= -1) {
846 st
= _ncl_otstp
.shdl
, _ncl_otstp
.sint
= -1;
847 safe_signal(SIGTSTP
, st
);
849 if (_ncl_ohup
.sint
!= -1) {
850 st
= _ncl_ohup
.shdl
, _ncl_ohup
.sint
= -1;
851 safe_signal(SIGHUP
, st
);
853 if (_ncl_oterm
.sint
!= -1) {
854 st
= _ncl_oterm
.shdl
, _ncl_oterm
.sint
= -1;
855 safe_signal(SIGTERM
, st
);
857 if (_ncl_oquit
.sint
!= -1) {
858 st
= _ncl_oquit
.shdl
, _ncl_oquit
.sint
= -1;
859 safe_signal(SIGQUIT
, st
);
861 if (_ncl_oint
.sint
!= -1) {
862 st
= _ncl_oint
.shdl
, _ncl_oint
.sint
= -1;
863 safe_signal(SIGINT
, st
);
869 _ncl_term_mode(bool_t raw
)
871 struct termios
*tiosp
= &_ncl_tios
.told
;
877 /* Always requery the attributes, in case we've been moved from background
878 * to foreground or however else in between sessions */
879 tcgetattr(STDIN_FILENO
, tiosp
);
880 memcpy(&_ncl_tios
.tnew
, tiosp
, sizeof *tiosp
);
881 tiosp
= &_ncl_tios
.tnew
;
882 tiosp
->c_cc
[VMIN
] = 1;
883 tiosp
->c_cc
[VTIME
] = 0;
884 tiosp
->c_iflag
&= ~(ISTRIP
);
885 tiosp
->c_lflag
&= ~(ECHO
/*| ECHOE | ECHONL */| ICANON
| IEXTEN
);
887 tcsetattr(STDIN_FILENO
, TCSADRAIN
, tiosp
);
892 _ncl_check_grow(struct line
*l
, size_t no SMALLOC_DEBUG_ARGS
)
897 i
= (l
->topins
+ no
) * sizeof(struct cell
) + 2 * sizeof(struct cell
);
898 if (i
> *l
->x_bufsize
) {
902 *l
->x_buf
= (srealloc
)(*l
->x_buf
, i SMALLOC_DEBUG_ARGSCALL
);
908 _ncl_bs_eof_dvup(struct cell
*cap
, size_t i
)
914 memmove(cap
, cap
+ 1, i
* sizeof(*cap
));
916 /* And.. the (rest of the) visual update */
917 for (j
= 0; j
< i
; ++j
)
918 fwrite(cap
[j
].cbuf
, sizeof *cap
->cbuf
, cap
[j
].count
, stdout
);
919 fputs(" \b", stdout
);
920 for (j
= 0; j
< i
; ++j
)
926 _ncl_wboundary(struct line
*l
, ssize_t dir
)
943 --t
, --c
; /* Unsigned wrapping may occur (twice), then */
945 for (i
= 0, cap
= l
->line
.cells
, anynon
= FAL0
;;) {
946 wchar_t wc
= cap
[c
+ dir
].wc
;
947 if (iswblank(wc
) || iswpunct(wc
)) {
966 _ncl_cell2dat(struct line
*l
)
972 for (i
= 0; i
< l
->topins
; ++i
) {
973 struct cell
*cap
= l
->line
.cells
+ i
;
974 memcpy(l
->line
.cbuf
+ len
, cap
->cbuf
, cap
->count
);
977 l
->line
.cbuf
[len
] = '\0';
982 # if defined HAVE_HISTORY || defined HAVE_TABEXPAND
984 _ncl_cell2save(struct line
*l
)
990 l
->savec
.s
= NULL
, l
->savec
.l
= 0;
994 for (cap
= l
->line
.cells
, len
= i
= 0; i
< l
->topins
; ++cap
, ++i
)
998 l
->savec
.s
= salloc(len
+ 1);
1000 for (cap
= l
->line
.cells
, len
= i
= 0; i
< l
->topins
; ++cap
, ++i
) {
1001 memcpy(l
->savec
.s
+ len
, cap
->cbuf
, cap
->count
);
1004 l
->savec
.s
[len
] = '\0';
1011 _ncl_khome(struct line
*l
, bool_t dobell
)
1013 size_t c
= l
->cursor
;
1026 _ncl_kend(struct line
*l
)
1031 i
= (ssize_t
)(l
->topins
- l
->cursor
);
1034 l
->cursor
= l
->topins
;
1036 fputs(l
->nd
, stdout
);
1043 _ncl_kbs(struct line
*l
)
1056 _ncl_bs_eof_dvup(l
->line
.cells
+ c
, t
);
1063 _ncl_kkill(struct line
*l
, bool_t dobell
)
1069 i
= (size_t)(l
->topins
- c
);
1073 for (j
= i
; j
!= 0; --j
)
1075 for (j
= i
; j
!= 0; --j
)
1083 _ncl_keof(struct line
*l
)
1091 i
= (ssize_t
)(t
- c
);
1095 _ncl_bs_eof_dvup(l
->line
.cells
+ c
, --i
);
1096 } else if (t
== 0 && !ok_blook(ignoreeof
)) {
1097 fputs("^D", stdout
);
1109 _ncl_kleft(struct line
*l
)
1112 if (l
->cursor
> 0) {
1121 _ncl_kright(struct line
*l
)
1124 if (l
->cursor
< l
->topins
) {
1126 fputs(l
->nd
, stdout
);
1133 _ncl_krefresh(struct line
*l
)
1140 if (l
->prompt
!= NULL
&& *l
->prompt
!= '\0')
1141 fputs(l
->prompt
, stdout
);
1142 for (cap
= l
->line
.cells
, i
= l
->topins
; i
> 0; ++cap
, --i
)
1143 fwrite(cap
->cbuf
, sizeof *cap
->cbuf
, cap
->count
, stdout
);
1144 for (i
= l
->topins
- l
->cursor
; i
> 0; --i
)
1150 _ncl_kbwddelw(struct line
*l
)
1157 i
= _ncl_wboundary(l
, -1);
1168 cap
= l
->line
.cells
+ c
;
1170 if (t
!= l
->cursor
) {
1172 memmove(cap
, cap
+ i
, j
* sizeof(*cap
));
1175 for (j
= i
; j
> 0; --j
)
1177 for (j
= l
->topins
- c
; j
> 0; ++cap
, --j
)
1178 fwrite(cap
[0].cbuf
, sizeof *cap
->cbuf
, cap
[0].count
, stdout
);
1179 for (j
= i
; j
> 0; --j
)
1181 for (j
= t
- c
; j
> 0; --j
)
1188 _ncl_kgow(struct line
*l
, ssize_t dir
)
1193 i
= _ncl_wboundary(l
, dir
);
1207 fputs(l
->nd
, stdout
);
1214 _ncl_kother(struct line
*l
, wchar_t wc
)
1216 /* Append if at EOL, insert otherwise;
1217 * since we may move around character-wise, always use a fresh ps */
1219 struct cell cell
, *cap
;
1223 /* First init a cell and see wether we'll really handle this wc */
1225 memset(&ps
, 0, sizeof ps
);
1226 i
= wcrtomb(cell
.cbuf
, wc
, &ps
);
1229 cell
.count
= (ui_it
)i
;
1230 if (enc_has_state
) {
1231 i
= wcrtomb(cell
.cbuf
+ i
, L
'\0', &ps
);
1234 else if (--i
< MB_LEN_MAX
)
1235 cell
.count
+= (ui_it
)i
;
1240 /* Yes, we will! Place it in the array */
1242 i
= l
->topins
++ - c
;
1243 cap
= l
->line
.cells
+ c
;
1245 memmove(cap
+ 1, cap
, i
* sizeof(cell
));
1246 memcpy(cap
, &cell
, sizeof cell
);
1248 /* And update visual */
1251 fwrite(cap
->cbuf
, sizeof *cap
->cbuf
, cap
->count
, stdout
);
1252 while ((++cap
, i
-- != 0));
1259 # ifdef HAVE_HISTORY
1261 __ncl_khist_shared(struct line
*l
, struct hist
*hp
)
1266 if ((l
->hist
= hp
) != NULL
) {
1267 l
->defc
.s
= savestrbuf(hp
->dat
, hp
->len
);
1269 l
->defc
.l
= hp
->len
;
1270 if (l
->topins
> 0) {
1271 _ncl_khome(l
, FAL0
);
1272 _ncl_kkill(l
, FAL0
);
1283 _ncl_khist(struct line
*l
, bool_t backwd
)
1289 /* If we're not in history mode yet, save line content;
1290 * also, disallow forward search, then, and, of course, bail unless we
1291 * do have any history at all */
1292 if ((hp
= l
->hist
) == NULL
) {
1295 if ((hp
= _ncl_hist
) == NULL
)
1301 hp
= backwd
? hp
->older
: hp
->younger
;
1303 rv
= __ncl_khist_shared(l
, hp
);
1309 _ncl_krhist(struct line
*l
)
1311 struct str orig_savec
;
1312 struct hist
*hp
= NULL
;
1316 /* We cannot complete an empty line */
1317 if (l
->topins
== 0) {
1318 /* XXX The upcoming hard reset would restore a set savec buffer,
1319 * XXX so forcefully reset that. A cleaner solution would be to
1320 * XXX reset it whenever a restore is no longer desired */
1321 l
->savec
.s
= NULL
, l
->savec
.l
= 0;
1324 if ((hp
= l
->hist
) == NULL
) {
1325 if ((hp
= _ncl_hist
) == NULL
)
1327 orig_savec
.s
= NULL
;
1328 orig_savec
.l
= 0; /* silence CC */
1329 } else if ((hp
= hp
->older
) == NULL
)
1332 orig_savec
= l
->savec
;
1334 if (orig_savec
.s
== NULL
)
1336 for (; hp
!= NULL
; hp
= hp
->older
)
1337 if (is_prefix(l
->savec
.s
, hp
->dat
))
1339 if (orig_savec
.s
!= NULL
)
1340 l
->savec
= orig_savec
;
1342 rv
= __ncl_khist_shared(l
, hp
);
1348 # ifdef HAVE_TABEXPAND
1350 _ncl_kht(struct line
*l
)
1352 struct str orig
, bot
, topp
, sub
, exp
;
1353 struct cell
*cword
, *ctop
, *cx
;
1354 bool_t set_savec
= FAL0
;
1358 /* We cannot expand an empty line */
1362 /* Get plain line data; if this is the first expansion/xy, update the
1363 * very original content so that ^G gets the origin back */
1373 cword
= l
->line
.cells
;
1374 ctop
= cword
+ l
->cursor
;
1376 /* topp: separate data right of cursor */
1377 if ((cx
= cword
+ l
->topins
) != ctop
) {
1378 for (rv
= 0; cx
> ctop
; --cx
)
1381 topp
.s
= orig
.s
+ orig
.l
- rv
;
1383 topp
.s
= NULL
, topp
.l
= 0;
1385 /* bot, sub: we cannot expand the entire data left of cursor, but only
1386 * the last "word", so separate them */
1387 while (cx
> cword
&& !iswspace(cx
[-1].wc
))
1389 for (rv
= 0; cword
< cx
; ++cword
)
1398 /* Leave room for "implicit asterisk" expansion, as below */
1400 sub
.s
= UNCONST("*");
1403 exp
.s
= salloc(sub
.l
+ 1 +1);
1404 memcpy(exp
.s
, sub
.s
, sub
.l
);
1405 exp
.s
[sub
.l
] = '\0';
1409 /* TODO there is a TODO note upon fexpand() with multi-return;
1410 * TODO if that will change, the if() below can be simplified */
1411 /* Super-Heavy-Metal: block all sigs, avoid leaks on jump */
1414 exp
.s
= fexpand(sub
.s
, _CL_TAB_FEXP_FL
);
1417 if (exp
.s
== NULL
|| (exp
.l
= strlen(exp
.s
)) == 0)
1419 /* If the expansion equals the original string, assume the user wants what
1420 * is usually known as tab completion, append `*' and restart */
1421 if (exp
.l
== sub
.l
&& !strcmp(exp
.s
, sub
.s
)) {
1422 if (sub
.s
[sub
.l
- 1] == '*')
1424 sub
.s
[sub
.l
++] = '*';
1425 sub
.s
[sub
.l
] = '\0';
1429 /* Cramp expansion length to MAX_INPUT, or 255 if not defined.
1430 * Take care to take *prompt* into account, since we don't know
1431 * anything about it's visual length (fputs(3) is used), simply
1432 * assume each character requires two columns */
1433 /* TODO the problem is that we loose control otherwise; in the best
1434 * TODO case the user can control via ^A and ^K etc., but be safe;
1435 * TODO we cannot simply adjust fexpand() because we don't know how
1436 * TODO that is implemented... The real solution would be to check
1437 * TODO wether we fit on a line, and start a pager if not.
1438 * TODO However, that should be part of a real tab-COMPLETION, then,
1439 * TODO i.e., don't EXPAND, but SHOW COMPLETIONS, page-wise if needed.
1440 * TODO And: MAX_INPUT is dynamic: pathconf(2), _SC_MAX_INPUT */
1441 rv
= (l
->prompt
!= NULL
) ? _PROMPT_VLEN(l
->prompt
) : 0;
1442 if (rv
+ bot
.l
+ exp
.l
+ topp
.l
>= MAX_INPUT
) {
1443 char const e1
[] = "[maximum line size exceeded]";
1444 exp
.s
= UNCONST(e1
);
1445 exp
.l
= sizeof(e1
) - 1;
1447 if (rv
+ bot
.l
+ exp
.l
>= MAX_INPUT
)
1449 if (rv
+ exp
.l
>= MAX_INPUT
) {
1450 char const e2
[] = "[ERR]";
1451 exp
.s
= UNCONST(e2
);
1452 exp
.l
= sizeof(e2
) - 1;
1456 orig
.l
= bot
.l
+ exp
.l
+ topp
.l
;
1457 orig
.s
= salloc(orig
.l
+ 1 + 5);
1458 if ((rv
= bot
.l
) > 0)
1459 memcpy(orig
.s
, bot
.s
, rv
);
1460 memcpy(orig
.s
+ rv
, exp
.s
, exp
.l
);
1463 memcpy(orig
.s
+ rv
, topp
.s
, topp
.l
);
1469 _ncl_khome(l
, FAL0
);
1470 _ncl_kkill(l
, FAL0
);
1475 /* If we've provided a default content, but failed to expand, there is
1476 * nothing we can "revert to": drop that default again */
1478 l
->savec
.s
= NULL
, l
->savec
.l
= 0;
1482 # endif /* HAVE_TABEXPAND */
1485 _ncl_readline(char const *prompt
, char **buf
, size_t *bufsize
, size_t len
1488 /* We want to save code, yet we may have to incorporate a lines'
1489 * default content and / or default input to switch back to after some
1490 * history movement; let "len > 0" mean "have to display some data
1491 * buffer", and only otherwise read(2) it */
1494 char cbuf_base
[MB_LEN_MAX
* 2], *cbuf
, *cbufp
;
1497 ui32_t maybe_cursor
;
1500 memset(&l
, 0, sizeof l
);
1503 l
.defc
.s
= savestrbuf(*buf
, len
);
1506 if ((l
.prompt
= prompt
) != NULL
&& _PROMPT_VLEN(prompt
) > _PROMPT_MAX
)
1507 l
.prompt
= prompt
= "?ERR?";
1508 /* TODO *l.nd=='\0' only because we have no value-cache -> see acmava.c */
1509 if ((l
.nd
= ok_vlook(line_editor_cursor_right
)) == NULL
|| *l
.nd
== '\0')
1510 l
.nd
= "\033[C"; /* XXX no "magic" constant */
1512 l
.x_bufsize
= bufsize
;
1514 if (prompt
!= NULL
&& *prompt
!= '\0') {
1515 fputs(prompt
, stdout
);
1519 memset(ps
, 0, sizeof ps
);
1521 /* TODO: NCL: we should output the reset sequence when we jrestart:
1522 * TODO: NCL: if we are using a stateful encoding? !
1523 * TODO: NCL: in short: this is not yet well understood */
1525 _ncl_check_grow(&l
, len SMALLOC_DEBUG_ARGSCALL
);
1527 /* Normal read(2)? Else buffer-takeover: speed this one up */
1532 assert(l
.defc
.l
> 0 && l
.defc
.s
!= NULL
);
1534 cbuf
= l
.defc
.s
+ (l
.defc
.l
- len
);
1538 /* Read in the next complete multibyte character */
1541 if ((rv
= read(STDIN_FILENO
, cbufp
, 1)) < 1) {
1542 if (errno
== EINTR
) /* xxx #if !SA_RESTART ? */
1549 /* Ach! the ISO C multibyte handling!
1550 * Encodings with locking shift states cannot really be helped, since
1551 * it is impossible to only query the shift state, as opposed to the
1552 * entire shift state + character pair (via ISO C functions) */
1553 rv
= (ssize_t
)mbrtowc(&wc
, cbuf
, (size_t)(cbufp
- cbuf
), ps
+ 0);
1555 /* Any error during take-over can only result in a hard reset;
1556 * Otherwise, if it's a hard error, or if too many redundant shift
1557 * sequences overflow our buffer, also perform a hard reset */
1558 if (len
!= 0 || rv
== -1 ||
1559 sizeof cbuf_base
== (size_t)(cbufp
- cbuf
)) {
1560 l
.savec
.s
= l
.defc
.s
= NULL
,
1561 l
.savec
.l
= l
.defc
.l
= len
= 0;
1566 /* Otherwise, due to the way we deal with the buffer, we need to
1567 * restore the mbstate_t from before this conversion */
1572 if (len
!= 0 && (len
-= (size_t)rv
) == 0)
1573 l
.defc
.s
= NULL
, l
.defc
.l
= 0;
1578 /* Don't interpret control bytes during buffer take-over */
1579 if (cbuf
!= cbuf_base
)
1582 case 'A' ^ 0x40: /* cursor home */
1583 _ncl_khome(&l
, TRU1
);
1586 case 'B' ^ 0x40: /* backward character */
1589 /* 'C': interrupt (CTRL-C) */
1590 case 'D' ^ 0x40: /* delete char forward if any, else EOF */
1591 if ((rv
= _ncl_keof(&l
)) < 0)
1594 case 'E' ^ 0x40: /* end of line */
1598 case 'F' ^ 0x40: /* forward character */
1602 case 'H' ^ 0x40: /* backspace */
1606 case 'I' ^ 0x40: /* horizontal tab */
1607 # ifdef HAVE_TABEXPAND
1608 if ((len
= _ncl_kht(&l
)) > 0)
1612 case 'J' ^ 0x40: /* NL (\n) */
1614 case 'G' ^ 0x40: /* full reset */
1617 case 'U' ^ 0x40: /* ^U: ^A + ^K */
1618 _ncl_khome(&l
, FAL0
);
1620 case 'K' ^ 0x40: /* kill from cursor to end of line */
1621 _ncl_kkill(&l
, (wc
== ('K' ^ 0x40) || l
.topins
== 0));
1622 /* (Handle full reset?) */
1623 if (wc
== ('G' ^ 0x40)) {
1624 # ifdef HAVE_HISTORY
1627 if ((len
= l
.savec
.l
) != 0) {
1629 l
.savec
.s
= NULL
, l
.savec
.l
= 0;
1635 case 'L' ^ 0x40: /* repaint line */
1640 case 'N' ^ 0x40: /* history next */
1641 # ifdef HAVE_HISTORY
1644 if ((len
= _ncl_khist(&l
, FAL0
)) > 0)
1653 case 'P' ^ 0x40: /* history previous */
1654 # ifdef HAVE_HISTORY
1655 if ((len
= _ncl_khist(&l
, TRU1
)) > 0)
1663 case 'R' ^ 0x40: /* reverse history search */
1664 # ifdef HAVE_HISTORY
1665 if ((len
= _ncl_krhist(&l
)) > 0)
1674 /*case 'V' ^ 0x40: TODO*/ /* forward delete "word" */
1675 case 'W' ^ 0x40: /* backward delete "word" */
1678 case 'X' ^ 0x40: /* move cursor forward "word" */
1681 case 'Y' ^ 0x40: /* move cursor backward "word" */
1684 /* 'Z': suspend (CTRL-Z) */
1686 if (maybe_cursor
++ != 0)
1690 /* XXX Handle usual ^[[[ABCD] cursor keys -- UGLY, "MAGIC", INFLEX */
1691 if (maybe_cursor
> 0) {
1692 if (++maybe_cursor
== 2) {
1699 case L
'A': goto j_p
;
1700 case L
'B': goto j_n
;
1701 case L
'C': goto j_f
;
1702 case L
'D': goto j_b
;
1704 _ncl_kother(&l
, L
'[');
1709 _ncl_kother(&l
, wc
);
1710 /* Don't clear the history during takeover..
1711 * ..and also avoid fflush()ing unless we've
1712 * worked the entire buffer */
1715 # ifdef HAVE_HISTORY
1716 if (cbuf
== cbuf_base
)
1728 /* We have a completed input line, convert the struct cell data to its
1729 * plain character equivalent */
1733 len
= _ncl_cell2dat(&l
);
1743 # ifdef HAVE_HISTORY
1747 size_t lsize
, cnt
, llen
;
1751 _ncl_oint
.sint
= _ncl_oquit
.sint
= _ncl_oterm
.sint
=
1752 _ncl_ohup
.sint
= _ncl_otstp
.sint
= _ncl_ottin
.sint
=
1753 _ncl_ottou
.sint
= -1;
1755 # ifdef HAVE_HISTORY
1758 _ncl_hist_size_max
= hs
;
1766 hold_all_sigs(); /* XXX too heavy, yet we may jump even here!? */
1767 f
= fopen(v
, "r"); /* TODO HISTFILE LOAD: use linebuf pool */
1774 while (fgetline(&lbuf
, &lsize
, &cnt
, &llen
, f
, FAL0
) != NULL
) {
1775 if (llen
> 0 && lbuf
[llen
- 1] == '\n')
1776 lbuf
[--llen
] = '\0';
1777 if (llen
== 0 || lbuf
[0] == '#') /* xxx comments? noone! */
1779 _ncl_hist_load
= TRU1
;
1781 _ncl_hist_load
= FAL0
;
1788 rele_all_sigs(); /* XXX remove jumps */
1790 # endif /* HAVE_HISTORY */
1797 # ifdef HAVE_HISTORY
1805 # ifdef HAVE_HISTORY
1814 if ((hp
= _ncl_hist
) != NULL
)
1815 while (hp
->older
!= NULL
&& hs
-- != 0)
1818 hold_all_sigs(); /* TODO too heavy, yet we may jump even here!? */
1819 f
= fopen(v
, "w"); /* TODO temporary + rename?! */
1822 if (fchmod(fileno(f
), S_IRUSR
| S_IWUSR
) != 0)
1825 for (; hp
!= NULL
; hp
= hp
->younger
) {
1826 fwrite(hp
->dat
, sizeof *hp
->dat
, hp
->len
, f
);
1832 rele_all_sigs(); /* XXX remove jumps */
1834 # endif /* HAVE_HISTORY */
1841 sigset_t nset
, oset
;
1842 NYD_X
; /* Signal handler */
1846 /* We don't deal with SIGWINCH, yet get called from main.c */
1849 _ncl_term_mode(FAL0
);
1852 sigaddset(&nset
, sig
);
1853 sigprocmask(SIG_UNBLOCK
, &nset
, &oset
);
1855 /* When we come here we'll continue editing, so reestablish */
1856 sigprocmask(SIG_BLOCK
, &oset
, (sigset_t
*)NULL
);
1858 _ncl_term_mode(TRU1
);
1864 (tty_readline
)(char const *prompt
, char **linebuf
, size_t *linesize
, size_t n
1870 /* Of course we have races here, but they cannot be avoided on POSIX
1871 * (except by even *more* actions) */
1873 _ncl_term_mode(TRU1
);
1874 nn
= _ncl_readline(prompt
, linebuf
, linesize
, n SMALLOC_DEBUG_ARGSCALL
);
1875 _ncl_term_mode(FAL0
);
1882 tty_addhist(char const *s
)
1884 # ifdef HAVE_HISTORY
1885 /* Super-Heavy-Metal: block all sigs, avoid leaks+ on jump */
1886 size_t l
= strlen(s
);
1887 struct hist
*h
, *o
, *y
;
1892 # ifdef HAVE_HISTORY
1893 if (_ncl_hist_size_max
== 0)
1895 _CL_CHECK_ADDHIST(s
, goto j_leave
);
1897 /* Eliminating duplicates is expensive, but simply inacceptable so
1898 * during the load of a potentially large history file! */
1899 if (!_ncl_hist_load
)
1900 for (h
= _ncl_hist
; h
!= NULL
; h
= h
->older
)
1901 if (h
->len
== l
&& !strcmp(h
->dat
, s
)) {
1902 hold_all_sigs(); /* TODO */
1918 if (!_ncl_hist_load
&& _ncl_hist_size
> _ncl_hist_size_max
) {
1920 if ((h
= _ncl_hist_tail
) != NULL
) {
1921 if ((_ncl_hist_tail
= h
->younger
) == NULL
)
1924 _ncl_hist_tail
->older
= NULL
;
1929 h
= smalloc((sizeof(struct hist
) - VFIELD_SIZEOF(struct hist
, dat
)) + l
+1);
1931 memcpy(h
->dat
, s
, l
+1);
1933 if ((h
->older
= _ncl_hist
) != NULL
)
1934 _ncl_hist
->younger
= h
;
1946 # ifdef HAVE_HISTORY
1957 if (_ncl_hist
== NULL
)
1960 if ((fp
= Ftmp(NULL
, "hist", OF_RDWR
| OF_UNLINK
| OF_REGISTER
, 0600)) ==
1969 for (h
= _ncl_hist
; h
!= NULL
; --i
, b
+= h
->len
, h
= h
->older
)
1970 fprintf(fp
, "%4lu. %-50.50s (%4lu+%lu bytes)\n",
1971 (ul_it
)i
, h
->dat
, (ul_it
)b
, (ul_it
)h
->len
);
1973 page_or_print(fp
, i
);
1980 while ((h
= _ncl_hist
) != NULL
) {
1981 _ncl_hist
= h
->older
;
1984 _ncl_hist_tail
= NULL
;
1990 struct hist
*h
= _ncl_hist
;
1991 if (UICMP(z
, entry
, <=, _ncl_hist_size
)) {
1992 entry
= (long)_ncl_hist_size
- entry
;
1993 for (h
= _ncl_hist
;; h
= h
->older
)
1996 else if (entry
-- != 0)
1999 v
= temporary_arg_v_store
= h
->dat
;
2007 # endif /* HAVE_HISTORY */
2008 #endif /* HAVE_NCL */
2011 * The really-nothing-at-all implementation
2014 #if !defined HAVE_READLINE && !defined HAVE_EDITLINE && !defined HAVE_NCL
2032 NYD_X
; /* Signal handler */
2037 (tty_readline
)(char const *prompt
, char **linebuf
, size_t *linesize
, size_t n
2040 /* TODO The nothing-at-all tty layer even forces re-entering all the
2041 * TODO original data when re-editing a field */
2042 bool_t doffl
= FAL0
;
2046 if (prompt
!= NULL
&& *prompt
!= '\0') {
2047 fputs(prompt
, stdout
);
2051 fprintf(stdout
, tr(511, "{former content: %.*s} "), (int)n
, *linebuf
);
2057 rv
= (readline_restart
)(stdin
, linebuf
, linesize
,n SMALLOC_DEBUG_ARGSCALL
);
2063 tty_addhist(char const *s
)
2069 #endif /* nothing at all */
2071 /* vim:set fenc=utf-8:s-it-mode */