1 /*@ S-nail - a mail user agent derived from Berkeley Mail.
2 *@ Program input of all sorts, input lexing, event loops, command evaluation.
3 *@ TODO n_PS_ROBOT requires yet n_PS_SOURCING, which REALLY sucks.
4 *@ TODO Commands and ghosts deserve a tree. Or so.
6 * Copyright (c) 2000-2004 Gunnar Ritter, Freiburg i. Br., Germany.
7 * Copyright (c) 2012 - 2017 Steffen (Daode) Nurpmeso <steffen@sdaoden.eu>.
10 * Copyright (c) 1980, 1993
11 * The Regents of the University of California. All rights reserved.
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 3. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #ifndef HAVE_AMALGAMATION
46 a_GO_FREE
= 1u<<0, /* Structure was allocated, n_free() it */
47 a_GO_PIPE
= 1u<<1, /* Open on a pipe */
48 a_GO_FILE
= 1u<<2, /* Loading or sourcing a file */
49 a_GO_MACRO
= 1u<<3, /* Running a macro */
50 a_GO_MACRO_FREE_DATA
= 1u<<4, /* Lines are allocated, n_free() once done */
51 /* TODO For simplicity this is yet _MACRO plus specialization overlay
52 * TODO (_X_OPTION, _CMD) -- these should be types on their own! */
53 a_GO_MACRO_X_OPTION
= 1u<<5, /* Macro indeed command line -X option */
54 a_GO_MACRO_CMD
= 1u<<6, /* Macro indeed single-line: ~:COMMAND */
55 /* TODO a_GO_SPLICE: the right way to support *on-compose-splice(-shell)?*
56 * TODO would be a command_loop object that emits an on_read_line event, and
57 * TODO have a special handler for the compose mode; with that, then,
58 * TODO _event_loop() would not call _evaluate() but CTX->on_read_line,
59 * TODO and _evaluate() would be the standard impl.,
60 * TODO whereas the COMMAND ESCAPE switch in collect.c would be another one.
61 * TODO With this generic accmacvar.c:temporary_compose_mode_hook_call()
62 * TODO could be dropped, and n_go_macro() could become extended,
63 * TODO and/or we would add a n_go_anything(), which would allow special
64 * TODO input handlers, special I/O input and output, special `localopts'
65 * TODO etc., to be glued to the new execution context. And all I/O all
66 * TODO over this software should not use stdin/stdout, but CTX->in/out.
67 * TODO The pstate must be a property of the current execution context, too.
68 * TODO This not today. :( For now we invent a special SPLICE execution
69 * TODO context overlay that at least allows to temporarily modify the
70 * TODO global pstate, and the global stdin and stdout pointers. HACK!
71 * TODO This splice thing is very special and has to go again. HACK!!
72 * TODO a_go_input() will drop it once it sees EOF (HACK!), but care for
73 * TODO jumps must be taken by splice creators. HACK!!! But works. ;} */
75 /* If it is none of those, it must be the outermost, the global one */
76 a_GO_TYPE_MASK
= a_GO_PIPE
| a_GO_FILE
| a_GO_MACRO
|
77 /* a_GO_MACRO_X_OPTION | a_GO_MACRO_CMD | */ a_GO_SPLICE
,
79 a_GO_FORCE_EOF
= 1u<<8, /* go_input() shall return EOF next */
81 a_GO_SUPER_MACRO
= 1u<<16, /* *Not* inheriting n_PS_SOURCING state */
82 /* This context has inherited the memory pool from its parent.
83 * In practice only used for resource file loading and -X args, which enter
84 * a top level n_go_main_loop() and should (re)use the in practice already
85 * allocated memory pool of the global context */
86 a_GO_MEMPOOL_INHERITED
= 1u<<17,
88 /* `xcall' optimization barrier: n_go_macro() has been finished with
89 * a `xcall' request, and `xcall' set this in the parent a_go_input of the
90 * said n_go_macro() to indicate a barrier: we teardown the a_go_input of
91 * the n_go_macro() away after leaving its _event_loop(), but then,
92 * back in n_go_macro(), that enters a for(;;) loop that directly calls
93 * c_call() -- our `xcall' stack avoidance optimization --, yet this call
94 * will itself end up in a new n_go_macro(), and if that again ends up with
95 * `xcall' this should teardown and leave its own n_go_macro(), unrolling the
96 * stack "up to the barrier level", but which effectively still is the
97 * n_go_macro() that lost its a_go_input and is looping the `xcall'
98 * optimization loop. If no `xcall' is desired that loop is simply left and
99 * the _event_loop() of the outer a_go_ctx will perform a loop tick and
100 * clear this bit again OR become teardown itself */
101 a_GO_XCALL_LOOP
= 1u<<24 /* `xcall' optimization barrier level */
104 enum a_go_cleanup_mode
{
105 a_GO_CLEANUP_UNWIND
= 1u<<0, /* Teardown all contexts except outermost */
106 a_GO_CLEANUP_TEARDOWN
= 1u<<1, /* Teardown current context */
107 a_GO_CLEANUP_LOOPTICK
= 1u<<2, /* Normal looptick cleanup */
108 a_GO_CLEANUP_MODE_MASK
= n_BITENUM_MASK(0, 2),
110 a_GO_CLEANUP_ERROR
= 1u<<8, /* Error occurred on level */
111 a_GO_CLEANUP_SIGINT
= 1u<<9, /* Interrupt signal received */
112 a_GO_CLEANUP_HOLDALLSIGS
= 1u<<10 /* hold_all_sigs() active TODO */
115 struct a_go_cmd_desc
{
116 char const *gcd_name
; /* Name of command */
117 int (*gcd_func
)(void*); /* Implementor of command */
118 enum n_cmd_arg_flags gcd_caflags
;
119 si16_t gcd_msgflag
; /* Required flags of msgs */
120 si16_t gcd_msgmask
; /* Relevant flags of msgs */
121 #ifdef HAVE_DOCSTRINGS
122 char const *gcd_doc
; /* One line doc for command */
125 /* Yechh, can't initialize unions */
126 #define gcd_minargs gcd_msgflag /* Minimum argcount for WYSH/WYRA/RAWLIST */
127 #define gcd_maxargs gcd_msgmask /* Max argcount for WYSH/WYRA/RAWLIST */
129 struct a_go_ghost
{ /* TODO binary search */
130 struct a_go_ghost
*gg_next
;
131 struct str gg_cmd
; /* Data follows after .gg_name */
132 char gg_name
[n_VFIELD_SIZE(0)];
135 struct a_go_eval_ctx
{
136 struct str gec_line
; /* The terminated data to _evaluate() */
137 ui32_t gec_line_size
; /* May be used to store line memory size */
139 bool_t gec_ever_seen
; /* Has ever been used (main_loop() only) */
140 bool_t gec_add_history
; /* Add command to history (TRUM1=gabby)? */
143 struct a_go_input_inject
{
144 struct a_go_input_inject
*gii_next
;
147 char gii_dat
[n_VFIELD_SIZE(7)];
151 struct a_go_ctx
*gc_outer
;
152 sigset_t gc_osigmask
;
153 ui32_t gc_flags
; /* enum a_go_flags */
154 ui32_t gc_loff
; /* Pseudo (macro): index in .gc_lines */
155 char **gc_lines
; /* Pseudo content, lines unfolded */
156 FILE *gc_file
; /* File we were in, if applicable */
157 struct a_go_input_inject
*gc_inject
; /* To be consumed first */
158 void (*gc_on_finalize
)(void *);
159 void *gc_finalize_arg
;
160 sigjmp_buf gc_eloop_jmp
; /* TODO one day... for _event_loop() */
161 /* SPLICE hacks: saved stdin/stdout, saved pstate */
162 FILE *gc_splice_stdin
;
163 FILE *gc_splice_stdout
;
164 ui32_t gc_splice_psonce
;
165 ui8_t gc_splice__dummy
[4];
166 struct n_go_data_ctx gc_data
;
167 char gc_name
[n_VFIELD_SIZE(0)]; /* Name of file or macro */
171 struct a_go_ctx
*gx_upto
; /* Unroll stack up to this level */
172 size_t gx_buflen
; /* ARGV requires that much bytes, all in all */
174 struct str gx_argv
[n_VFIELD_SIZE(0)];
177 static sighandler_type a_go_oldpipe
;
178 static struct a_go_ghost
*a_go_ghosts
;
179 /* a_go_cmd_tab[] after fun protos */
181 /* Our current execution context, and the buffer backing the outermost level */
182 static struct a_go_ctx
*a_go_ctx
;
184 #define a_GO_MAINCTX_NAME "Main event loop"
187 char uf
[n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
188 sizeof(a_GO_MAINCTX_NAME
)];
191 /* `xcall' stack-avoidance bypass optimization */
192 static struct a_go_xcall
*a_go_xcall
;
194 static sigjmp_buf a_go_srbuf
; /* TODO GET RID */
196 /* Isolate the command from the arguments */
197 static char *a_go_isolate(char const *comm
);
200 static int a_go_c_eval(void *vp
);
203 static int a_go_c_xcall(void *vp
);
205 /* Command ghost handling */
206 static int a_go_c_ghost(void *vp
);
207 static int a_go_c_unghost(void *vp
);
209 /* Create a multiline info string about all known additional infos for lcp */
210 #ifdef HAVE_DOCSTRINGS
211 static char const *a_go_cmdinfo(struct a_go_cmd_desc
const *gcdp
);
214 /* Print a list of all commands */
215 static int a_go_c_list(void *vp
);
217 static int a_go__pcmd_cmp(void const *s1
, void const *s2
);
219 /* `help' / `?' command */
220 static int a_go_c_help(void *vp
);
222 /* `exit' and `quit' commands */
223 static int a_go_c_exit(void *vp
);
224 static int a_go_c_quit(void *vp
);
226 /* Print the version number of the binary */
227 static int a_go_c_version(void *vp
);
229 static int a_go__version_cmp(void const *s1
, void const *s2
);
231 /* n_PS_STATE_PENDMASK requires some actions */
232 static void a_go_update_pstate(void);
234 /* Evaluate a single command.
235 * .gec_add_history will be updated upon success.
236 * TODO Command functions return 0 for success, 1 for error, and -1 for abort.
237 * 1 or -1 aborts a load or source, a -1 aborts the interactive command loop */
238 static int a_go_evaluate(struct a_go_eval_ctx
*gecp
);
240 /* Get first-fit, or NULL */
241 static struct a_go_cmd_desc
const *a_go__firstfit(char const *comm
);
243 /* Branch here on hangup signal and simulate "exit" */
244 static void a_go_hangup(int s
);
246 /* The following gets called on receipt of an interrupt */
247 static void a_go_onintr(int s
);
249 /* Cleanup current execution context, update the program state.
250 * If _CLEANUP_ERROR is set then we don't alert and error out if the stack
251 * doesn't exist at all, unless _CLEANUP_HOLDALLSIGS we hold_all_sigs() */
252 static void a_go_cleanup(enum a_go_cleanup_mode gcm
);
254 /* `source' and `source_if' (if silent_open_error: no pipes allowed, then).
255 * Returns FAL0 if file is somehow not usable (unless silent_open_error) or
256 * upon evaluation error, and TRU1 on success */
257 static bool_t
a_go_file(char const *file
, bool_t silent_open_error
);
259 /* System resource file load()ing or -X command line option array traversal */
260 static bool_t
a_go_load(struct a_go_ctx
*gcp
);
262 /* A simplified command loop for recursed state machines */
263 static bool_t
a_go_event_loop(struct a_go_ctx
*gcp
, enum n_go_input_flags gif
);
266 static int a_go_c_read(void *vp
);
268 static bool_t
a_go__read_set(char const *cp
, char const *value
);
270 /* List of all commands, and list of commands which are specially treated
271 * and deduced in _evaluate(), but must offer normal descriptions for others */
272 #ifdef HAVE_DOCSTRINGS
277 static struct a_go_cmd_desc
const a_go_cmd_tab
[] = {
280 a_go_special_cmd_tab
[] = {
281 { "#", NULL
, n_CMD_ARG_TYPE_STRING
, 0, 0
282 DS(N_("Comment command: ignore remaining (continuable) line")) },
283 { "-", NULL
, n_CMD_ARG_TYPE_WYSH
, 0, 0
284 DS(N_("Print out the preceding message")) }
289 a_go_isolate(char const *comm
){
291 while(*comm
!= '\0' &&
292 strchr("~|? \t0123456789&%@$^.:/-+*'\",;(`", *comm
) == NULL
)
295 return n_UNCONST(comm
);
299 a_go_c_eval(void *vp
){
300 /* TODO HACK! `eval' should be nothing else but a command prefix, evaluate
301 * TODO ARGV with shell rules, but if that is not possible then simply
302 * TODO adjust argv/argc of "the CmdCtx" that we will have "exec" real cmd */
303 struct n_string s_b
, *sp
;
306 char const **argv
, *cp
;
311 for(j
= i
= 0; (cp
= argv
[i
]) != NULL
; ++i
)
314 sp
= n_string_creat_auto(&s_b
);
315 sp
= n_string_reserve(sp
, j
);
317 for(i
= 0; (cp
= argv
[i
]) != NULL
; ++i
){
319 sp
= n_string_push_c(sp
, ' ');
320 sp
= n_string_push_cp(sp
, cp
);
323 /* TODO HACK! We should inherit the current n_go_input_flags via CmdCtx,
324 * TODO for now we don't have such sort of! n_PS_COMPOSE_MODE is a hack
325 * TODO by itself, since ever: misuse the hack for a hack.
326 * TODO Further more, exit handling is very grazy */
327 (void)/*XXX*/n_go_command((n_pstate
& n_PS_COMPOSE_MODE
328 ? n_GO_INPUT_CTX_COMPOSE
: n_GO_INPUT_CTX_DEFAULT
), n_string_cp(sp
));
330 if(a_go_xcall
!= NULL
)
334 if(cp
== n_0
) /* This is a hack, but since anything is a hack, be hacky */
341 n_idec_si32_cp(&rv
, cp
, 10, NULL
);
348 a_go_c_xcall(void *vp
){
349 struct a_go_xcall
*gxp
;
352 char const **oargv
, *cp
;
354 struct a_go_ctx
*gcp
;
357 /* The context can only be a macro context, except that possibly a single
358 * level of `eval' (TODO: yet) was used to double-expand our arguments */
359 if((gcp
= a_go_ctx
)->gc_flags
& a_GO_MACRO_CMD
)
361 if((gcp
->gc_flags
& (a_GO_MACRO
| a_GO_MACRO_CMD
)) != a_GO_MACRO
)
364 /* Try to roll up the stack as much as possible.
365 * See a_GO_XCALL_LOOP flag description for more */
366 if(gcp
->gc_outer
!= NULL
){
367 if(gcp
->gc_outer
->gc_flags
& a_GO_XCALL_LOOP
)
370 /* Otherwise this macro is invoked from the top level, in which case we
371 * silently act as if we were `call'... */
373 /* ...which means we must ensure the rest of the macro that was us
374 * doesn't become evaluated! */
375 a_go_xcall
= (struct a_go_xcall
*)-1;
381 for(j
= i
= 0; (cp
= oargv
[i
]) != NULL
; ++i
)
384 gxp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_xcall
, gx_argv
) +
385 (sizeof(struct str
) * i
) + ++j
);
387 gxp
->gx_buflen
= (sizeof(char*) * (i
+ 1)) + j
; /* ARGV inc. strings! */
389 xcp
= (char*)&gxp
->gx_argv
[i
];
391 for(i
= 0; (cp
= oargv
[i
]) != NULL
; ++i
){
392 gxp
->gx_argv
[i
].l
= j
= strlen(cp
);
393 gxp
->gx_argv
[i
].s
= xcp
;
394 memcpy(xcp
, cp
, ++j
);
404 n_err(_("`xcall': can only be used inside a macro\n"));
410 a_go_c_ghost(void *vp
){
411 struct a_go_ghost
*lggp
, *ggp
;
423 if((fp
= Ftmp(NULL
, "ghost", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
)
426 for(i
= 0, ggp
= a_go_ghosts
; ggp
!= NULL
; ggp
= ggp
->gg_next
)
427 fprintf(fp
, "wysh ghost %s %s\n",
428 ggp
->gg_name
, n_shexp_quote_cp(ggp
->gg_cmd
.s
, TRU1
));
431 page_or_print(fp
, i
);
437 /* Verify the ghost name is a valid one, and not a command modifier */
438 if(*argv
[0] == '\0' || *a_go_isolate(argv
[0]) != '\0' ||
439 !asccasecmp(argv
[0], "ignerr") || !asccasecmp(argv
[0], "wysh") ||
440 !asccasecmp(argv
[0], "vput")){
441 n_err(_("`ghost': can't canonicalize %s\n"),
442 n_shexp_quote_cp(argv
[0], FAL0
));
447 /* Show command of single ghost? */
449 for(ggp
= a_go_ghosts
; ggp
!= NULL
; ggp
= ggp
->gg_next
)
450 if(!strcmp(argv
[0], ggp
->gg_name
)){
451 fprintf(n_stdout
, "wysh ghost %s %s\n",
452 ggp
->gg_name
, n_shexp_quote_cp(ggp
->gg_cmd
.s
, TRU1
));
455 n_err(_("`ghost': no such alias: %s\n"), argv
[0]);
460 /* Define command for ghost: verify command content */
461 for(cl
= 0, i
= 1; (cp
= n_UNCONST(argv
[i
])) != NULL
; ++i
)
463 cl
+= strlen(cp
) +1; /* SP or NUL */
465 n_err(_("`ghost': empty command arguments after %s\n"), argv
[0]);
470 /* If the ghost already exists, recreate */
471 for(lggp
= NULL
, ggp
= a_go_ghosts
; ggp
!= NULL
;
472 lggp
= ggp
, ggp
= ggp
->gg_next
)
473 if(!strcmp(ggp
->gg_name
, argv
[0])){
475 lggp
->gg_next
= ggp
->gg_next
;
477 a_go_ghosts
= ggp
->gg_next
;
482 nl
= strlen(argv
[0]) +1;
483 ggp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ghost
, gg_name
) + nl
+ cl
);
484 ggp
->gg_next
= a_go_ghosts
;
486 memcpy(ggp
->gg_name
, argv
[0], nl
);
487 cp
= ggp
->gg_cmd
.s
= &ggp
->gg_name
[nl
];
488 ggp
->gg_cmd
.l
= --cl
;
490 while(*++argv
!= NULL
)
491 if((i
= strlen(*argv
)) > 0){
492 memcpy(cp
, *argv
, i
);
503 a_go_c_unghost(void *vp
){
504 struct a_go_ghost
*lggp
, *ggp
;
505 char const **argv
, *cp
;
512 while((cp
= *argv
++) != NULL
){
513 if(cp
[0] == '*' && cp
[1] == '\0'){
514 while((ggp
= a_go_ghosts
) != NULL
){
515 a_go_ghosts
= ggp
->gg_next
;
519 for(lggp
= NULL
, ggp
= a_go_ghosts
; ggp
!= NULL
;
520 lggp
= ggp
, ggp
= ggp
->gg_next
)
521 if(!strcmp(ggp
->gg_name
, cp
)){
523 lggp
->gg_next
= ggp
->gg_next
;
525 a_go_ghosts
= ggp
->gg_next
;
529 n_err(_("`unghost': no such alias: %s\n"),
530 n_shexp_quote_cp(cp
, FAL0
));
539 #ifdef HAVE_DOCSTRINGS
541 a_go_cmdinfo(struct a_go_cmd_desc
const *gcdp
){
542 struct n_string rvb
, *rv
;
546 rv
= n_string_creat_auto(&rvb
);
547 rv
= n_string_reserve(rv
, 80);
549 switch(gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
){
550 case n_CMD_ARG_TYPE_MSGLIST
:
551 cp
= N_("message-list");
553 case n_CMD_ARG_TYPE_STRING
:
554 case n_CMD_ARG_TYPE_RAWDAT
:
555 cp
= N_("string data");
557 case n_CMD_ARG_TYPE_RAWLIST
:
558 cp
= N_("old-style quoting");
560 case n_CMD_ARG_TYPE_NDMLIST
:
561 cp
= N_("message-list (no default)");
563 case n_CMD_ARG_TYPE_WYRA
:
564 cp
= N_("`wysh' for sh(1)ell-style quoting");
567 case n_CMD_ARG_TYPE_WYSH
:
568 cp
= (gcdp
->gcd_minargs
== 0 && gcdp
->gcd_maxargs
== 0)
569 ? N_("sh(1)ell-style quoting (takes no arguments)")
570 : N_("sh(1)ell-style quoting");
573 rv
= n_string_push_cp(rv
, V_(cp
));
575 if(gcdp
->gcd_caflags
& n_CMD_ARG_V
)
576 rv
= n_string_push_cp(rv
, _(" | vput modifier"));
577 if(gcdp
->gcd_caflags
& n_CMD_ARG_EM
)
578 rv
= n_string_push_cp(rv
, _(" | status in *!*"));
580 if(gcdp
->gcd_caflags
& n_CMD_ARG_A
)
581 rv
= n_string_push_cp(rv
, _(" | needs box"));
582 if(gcdp
->gcd_caflags
& n_CMD_ARG_I
)
583 rv
= n_string_push_cp(rv
, _(" | ok: batch or interactive"));
584 if(gcdp
->gcd_caflags
& n_CMD_ARG_M
)
585 rv
= n_string_push_cp(rv
, _(" | ok: send mode"));
586 if(gcdp
->gcd_caflags
& n_CMD_ARG_R
)
587 rv
= n_string_push_cp(rv
, _(" | not ok: compose mode"));
588 if(gcdp
->gcd_caflags
& n_CMD_ARG_S
)
589 rv
= n_string_push_cp(rv
, _(" | not ok: during startup"));
590 if(gcdp
->gcd_caflags
& n_CMD_ARG_X
)
591 rv
= n_string_push_cp(rv
, _(" | ok: in subprocess"));
593 if(gcdp
->gcd_caflags
& n_CMD_ARG_G
)
594 rv
= n_string_push_cp(rv
, _(" | gabby history"));
596 cp
= n_string_cp(rv
);
600 #endif /* HAVE_DOCSTRINGS */
603 a_go_c_list(void *vp
){
605 struct a_go_cmd_desc
const **gcdpa
, *gcdp
, **gcdpa_curr
;
609 i
= n_NELEM(a_go_cmd_tab
) + n_NELEM(a_go_special_cmd_tab
) +1;
610 gcdpa
= n_autorec_alloc(sizeof(gcdp
) * i
);
612 for(i
= 0; i
< n_NELEM(a_go_cmd_tab
); ++i
)
613 gcdpa
[i
] = &a_go_cmd_tab
[i
];
617 for(j
= 0; j
< n_NELEM(a_go_special_cmd_tab
); ++i
, ++j
)
618 gcdpa
[i
] = &a_go_special_cmd_tab
[j
];
622 if(*(void**)vp
== NULL
)
623 qsort(gcdpa
, i
, sizeof(*gcdpa
), &a_go__pcmd_cmp
);
625 if((fp
= Ftmp(NULL
, "list", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
)
628 fprintf(fp
, _("Commands are:\n"));
629 scrwid
= n_SCRNWIDTH_FOR_LISTS
;
631 for(i
= 0, gcdpa_curr
= gcdpa
; (gcdp
= *gcdpa_curr
++) != NULL
;){
632 if(gcdp
->gcd_func
== &c_cmdnotsupp
)
634 if(n_poption
& n_PO_D_V
){
635 fprintf(fp
, "%s\n", gcdp
->gcd_name
);
637 #ifdef HAVE_DOCSTRINGS
638 fprintf(fp
, " : %s\n", V_(gcdp
->gcd_doc
));
640 fprintf(fp
, " : %s\n", a_go_cmdinfo(gcdp
));
646 if((i
+= (j
= strlen(gcdp
->gcd_name
) + 2)) > scrwid
){
651 fprintf(fp
, (*gcdpa_curr
!= NULL
? "%s, " : "%s\n"), gcdp
->gcd_name
);
656 page_or_print(fp
, l
);
664 a_go__pcmd_cmp(void const *s1
, void const *s2
){
665 struct a_go_cmd_desc
const * const *gcdpa1
, * const *gcdpa2
;
671 rv
= strcmp((*gcdpa1
)->gcd_name
, (*gcdpa2
)->gcd_name
);
677 a_go_c_help(void *vp
){
682 /* Help for a single command? */
683 if((arg
= *(char**)vp
) != NULL
){
684 struct a_go_ghost
const *ggp
;
685 struct a_go_cmd_desc
const *gcdp
, *gcdp_max
;
687 /* Ghosts take precedence */
688 for(ggp
= a_go_ghosts
; ggp
!= NULL
; ggp
= ggp
->gg_next
)
689 if(!strcmp(arg
, ggp
->gg_name
)){
690 fprintf(n_stdout
, "%s -> ", arg
);
695 gcdp_max
= &(gcdp
= a_go_cmd_tab
)[n_NELEM(a_go_cmd_tab
)];
697 for(; gcdp
< gcdp_max
; ++gcdp
){
698 if(is_prefix(arg
, gcdp
->gcd_name
)){
699 fputs(arg
, n_stdout
);
700 if(strcmp(arg
, gcdp
->gcd_name
))
701 fprintf(n_stdout
, " (%s)", gcdp
->gcd_name
);
705 #ifdef HAVE_DOCSTRINGS
706 fprintf(n_stdout
, ": %s", V_(gcdp
->gcd_doc
));
707 if(n_poption
& n_PO_D_V
)
708 fprintf(n_stdout
, "\n : %s", a_go_cmdinfo(gcdp
));
710 putc('\n', n_stdout
);
715 if(gcdp_max
== &a_go_cmd_tab
[n_NELEM(a_go_cmd_tab
)]){
717 a_go_special_cmd_tab
)[n_NELEM(a_go_special_cmd_tab
)];
722 fprintf(n_stdout
, "%s\n", n_shexp_quote_cp(arg
, TRU1
));
725 n_err(_("Unknown command: `%s'\n"), arg
);
729 /* Very ugly, but take care for compiler supported string lengths :( */
730 fputs(n_progname
, n_stdout
);
732 " commands -- <msglist> denotes message specifications,\n"
733 "e.g., 1-5, :n or ., separated by spaces:\n"), n_stdout
);
736 "type <msglist> type (`print') messages (honour `headerpick' etc.)\n"
737 "Type <msglist> like `type' but always show all headers\n"
738 "next goto and type next message\n"
739 "from <msglist> (search and) print header summary for the given list\n"
740 "headers header summary for messages surrounding \"dot\"\n"
741 "delete <msglist> delete messages (can be `undelete'd)\n"),
746 "save <msglist> folder append messages to folder and mark as saved\n"
747 "copy <msglist> folder like `save', but don't mark them (`move' moves)\n"
748 "write <msglist> file write message contents to file (prompts for parts)\n"
749 "Reply <msglist> reply to message senders only\n"
750 "reply <msglist> like `Reply', but address all recipients\n"
751 "Lreply <msglist> forced mailing-list `reply' (see `mlist')\n"),
756 "mail <recipients> compose a mail for the given recipients\n"
757 "file folder change to another mailbox\n"
758 "File folder like `file', but open readonly\n"
759 "quit quit and apply changes to the current mailbox\n"
760 "xit or exit like `quit', but discard changes\n"
761 "!shell command shell escape\n"
762 "list [<anything>] all available commands [in search order]\n"),
765 rv
= (ferror(n_stdout
) != 0);
773 a_go_c_exit(void *vp
){
777 if(n_psonce
& n_PSO_STARTED
){
778 /* In recursed state, return error to just pop the input level */
779 if(!(n_pstate
& n_PS_SOURCING
)){ /* FIXME a_go_ctx->gc_outer == NULL */
781 if((n_psonce
& n_PSO_INTERACTIVE
) && !(n_poption
& n_PO_QUICKRUN_MASK
))
787 n_pstate
|= n_PS_EXIT
; /* FIXME Always like this here, then CLEANUP_UNWIND!*/
793 a_go_c_quit(void *vp
){
796 n_pstate
|= n_PS_EXIT
;
802 a_go_c_version(void *vp
){
805 char const *cp
, **arr
;
810 fprintf(n_stdout
, _("%s version %s\nFeatures included (+) or not (-)\n"),
811 n_uagent
, ok_vlook(version
));
813 /* *features* starts with dummy byte to avoid + -> *folder* expansions */
814 i
= strlen(cp
= &ok_vlook(features
)[1]) +1;
815 iop
= n_autorec_alloc(i
);
818 arr
= n_autorec_alloc(sizeof(cp
) * VAL_FEATURES_CNT
);
819 for(longest
= 0, i
= 0; (cp
= n_strsep(&iop
, ',', TRU1
)) != NULL
; ++i
){
822 longest
= n_MAX(longest
, (int)i2
);
824 qsort(arr
, i
, sizeof(cp
), &a_go__version_cmp
);
826 /* We use aligned columns, so don't use n_SCRNWIDTH_FOR_LISTS */
827 for(++longest
, i2
= 0; i
-- > 0;){
829 fprintf(n_stdout
, "%-*s ", longest
, cp
);
831 if(UICMP(z
, ++i2
+ longest
, >=, n_scrnwidth
) || i
== 0){
833 putc('\n', n_stdout
);
837 if((rv
= ferror(n_stdout
) != 0))
844 a_go__version_cmp(void const *s1
, void const *s2
){
845 char const * const *cp1
, * const *cp2
;
851 rv
= strcmp(&(*cp1
)[1], &(*cp2
)[1]);
857 a_go_update_pstate(void){
861 act
= ((n_pstate
& n_PS_SIGWINCH_PEND
) != 0);
862 n_pstate
&= ~n_PS_PSTATE_PENDMASK
;
867 snprintf(buf
, sizeof buf
, "%d", n_scrnwidth
);
868 ok_vset(COLUMNS
, buf
);
869 snprintf(buf
, sizeof buf
, "%d", n_scrnheight
);
876 a_go_evaluate(struct a_go_eval_ctx
*gecp
){
877 /* xxx old style(9), but also old code */
879 char _wordbuf
[2], **arglist_base
/*[n_MAXARGC]*/, **arglist
, *cp
, *word
;
880 struct a_go_ghost
*ggp
;
881 struct a_go_cmd_desc
const *gcdp
;
885 a_GHOST_MASK
= n_BITENUM_MASK(0, 2), /* Alias recursion counter bits */
886 a_NOPREFIX
= 1<<4, /* Modifier prefix not allowed right now */
887 a_NOGHOST
= 1<<5, /* "No alias!" expansion modifier */
888 /* New modifier prefixes must be reflected in a_go_c_alias()! */
889 a_IGNERR
= 1<<6, /* ignerr modifier prefix */
890 a_WYSH
= 1<<7, /* XXX v15+ drop wysh modifier prefix */
891 a_VPUT
= 1<<8 /* vput modifier prefix */
900 arglist_base
= n_autorec_alloc(sizeof(*arglist_base
) * n_MAXARGC
);
901 line
= gecp
->gec_line
; /* XXX don't change original (buffer pointer) */
902 assert(line
.s
[line
.l
] == '\0');
903 gecp
->gec_add_history
= FAL0
;
905 /* Command ghosts that refer to shell commands or macro expansion restart */
908 /* Strip the white space away from end and beginning of command */
913 for(cp
= &line
.s
[i
-1]; spacechar(*cp
); --cp
)
917 for(cp
= line
.s
; spacechar(*cp
); ++cp
)
919 line
.l
-= PTR2SIZE(cp
- line
.s
);
921 /* Ignore null commands (comments) */
925 /* Handle ! differently to get the correct lexical conventions */
929 /* Isolate the actual command; since it may not necessarily be
930 * separated from the arguments (as in `p1') we need to duplicate it to
931 * be able to create a NUL terminated version.
932 * We must be aware of several special one letter commands here */
933 else if((cp
= a_go_isolate(cp
)) == arglist
[0] &&
934 (*cp
== '|' || *cp
== '~' || *cp
== '?'))
936 c
= (int)PTR2SIZE(cp
- arglist
[0]);
938 word
= UICMP(z
, c
, <, sizeof _wordbuf
) ? _wordbuf
: n_autorec_alloc(c
+1);
939 memcpy(word
, arglist
[0], c
);
942 /* No-expansion modifier? */
943 if(!(flags
& a_NOPREFIX
) && *word
== '\\'){
949 /* It may be a modifier prefix */
950 if(c
== sizeof("ignerr") -1 && !asccasecmp(word
, "ignerr")){
951 flags
|= a_NOPREFIX
| a_IGNERR
;
954 }else if(c
== sizeof("wysh") -1 && !asccasecmp(word
, "wysh")){
955 flags
|= a_NOPREFIX
| a_WYSH
;
958 }else if(c
== sizeof("vput") -1 && !asccasecmp(word
, "vput")){
959 flags
|= a_NOPREFIX
| a_VPUT
;
964 /* Look up the command; if not found, bitch.
965 * Normally, a blank command would map to the first command in the
966 * table; while n_PS_SOURCING, however, we ignore blank lines to eliminate
967 * confusion; act just the same for ghosts */
969 if((n_pstate
& n_PS_ROBOT
) || !(n_psonce
& n_PSO_INTERACTIVE
) ||
972 gcdp
= &a_go_cmd_tab
[0];
976 if(!(flags
& a_NOGHOST
) && (flags
& a_GHOST_MASK
) != a_GHOST_MASK
){
979 expcnt
= (flags
& a_GHOST_MASK
);
981 flags
= (flags
& ~(a_GHOST_MASK
| a_NOPREFIX
)) | expcnt
;
983 /* Avoid self-recursion; yes, the user could use \ no-expansion, but.. */
984 if(ggp
!= NULL
&& !strcmp(word
, ggp
->gg_name
)){
985 if(n_poption
& n_PO_D_V
)
986 n_err(_("Actively avoiding self-recursion of `ghost': %s\n"), word
);
987 }else for(ggp
= a_go_ghosts
; ggp
!= NULL
; ggp
= ggp
->gg_next
)
988 if(!strcmp(word
, ggp
->gg_name
)){
993 line
.s
= n_autorec_alloc(i
+ line
.l
+1);
994 memcpy(line
.s
, ggp
->gg_cmd
.s
, i
);
995 memcpy(line
.s
+ i
, cp
, line
.l
);
996 line
.s
[i
+= line
.l
] = '\0';
999 line
.s
= ggp
->gg_cmd
.s
;
1000 line
.l
= ggp
->gg_cmd
.l
;
1006 if((gcdp
= a_go__firstfit(word
)) == NULL
|| gcdp
->gcd_func
== &c_cmdnotsupp
){
1009 if(!(s
= n_cnd_if_isskip()) || (n_poption
& n_PO_D_V
))
1010 n_err(_("Unknown command%s: `%s'\n"),
1011 (s
? _(" (ignored due to `if' condition)") : n_empty
), word
);
1018 n_pstate_var__em
= n_m1
;
1022 /* See if we should execute the command -- if a conditional we always
1023 * execute it, otherwise, check the state of cond */
1025 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_F
) && n_cnd_if_isskip())
1028 n_pstate_var__em
= n_1
;
1030 /* Process the arguments to the command, depending on the type it expects */
1031 if((gcdp
->gcd_caflags
& n_CMD_ARG_I
) && !(n_psonce
& n_PSO_INTERACTIVE
) &&
1032 !(n_poption
& n_PO_BATCH_FLAG
)){
1033 n_err(_("May not execute `%s' unless interactive or in batch mode\n"),
1037 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_M
) && (n_psonce
& n_PSO_SENDMODE
)){
1038 n_err(_("May not execute `%s' while sending\n"), gcdp
->gcd_name
);
1041 if(gcdp
->gcd_caflags
& n_CMD_ARG_R
){
1042 if(n_pstate
& n_PS_COMPOSE_MODE
){
1043 /* TODO n_PS_COMPOSE_MODE: should allow `reply': ~:reply! */
1044 n_err(_("Cannot invoke `%s' when in compose mode\n"), gcdp
->gcd_name
);
1047 /* TODO Nothing should prevent n_CMD_ARG_R in conjunction with
1048 * TODO n_PS_ROBOT|_SOURCING; see a.._may_yield_control()! */
1049 if(n_pstate
& (n_PS_ROBOT
| n_PS_SOURCING
)){
1050 n_err(_("Cannot invoke `%s' from a macro or during file inclusion\n"),
1055 if((gcdp
->gcd_caflags
& n_CMD_ARG_S
) && !(n_psonce
& n_PSO_STARTED
)){
1056 n_err(_("May not execute `%s' during startup\n"), gcdp
->gcd_name
);
1059 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_X
) && (n_pstate
& n_PS_COMPOSE_FORKHOOK
)){
1060 n_err(_("Cannot invoke `%s' from a hook running in a child process\n"),
1065 if((gcdp
->gcd_caflags
& n_CMD_ARG_A
) && mb
.mb_type
== MB_VOID
){
1066 n_err(_("Cannot execute `%s' without active mailbox\n"), gcdp
->gcd_name
);
1069 if((gcdp
->gcd_caflags
& n_CMD_ARG_W
) && !(mb
.mb_perm
& MB_DELE
)){
1070 n_err(_("May not execute `%s' -- message file is read only\n"),
1075 if(gcdp
->gcd_caflags
& n_CMD_ARG_O
)
1076 n_OBSOLETE2(_("this command will be removed"), gcdp
->gcd_name
);
1078 /* TODO v15: strip n_PS_ARGLIST_MASK off, just in case the actual command
1079 * TODO doesn't use any of those list commands which strip this mask,
1080 * TODO and for now we misuse bits for checking relation to history;
1081 * TODO argument state should be property of a per-command carrier instead */
1082 n_pstate
&= ~n_PS_ARGLIST_MASK
;
1084 if((flags
& a_WYSH
) &&
1085 (gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
) != n_CMD_ARG_TYPE_WYRA
){
1086 n_err(_("`wysh' prefix does not affect `%s'\n"), gcdp
->gcd_name
);
1091 if(gcdp
->gcd_caflags
& n_CMD_ARG_V
){
1095 arglist
[0] = n_shexp_parse_token_cp((n_SHEXP_PARSE_TRIMSPACE
|
1096 n_SHEXP_PARSE_LOG
), &xcp
);
1097 line
.l
-= PTR2SIZE(xcp
- cp
);
1098 cp
= n_UNCONST(xcp
);
1100 xcp
= N_("could not parse input token");
1101 else if(!n_shexp_is_valid_varname(arglist
[0]))
1102 xcp
= N_("not a valid variable name");
1103 else if(!n_var_is_user_writable(arglist
[0]))
1104 xcp
= N_("either not a user writable, or a boolean variable");
1108 n_err("`%s': vput: %s: %s\n",
1109 gcdp
->gcd_name
, V_(xcp
), n_shexp_quote_cp(arglist
[0], FAL0
));
1113 n_pstate
|= n_PS_ARGMOD_VPUT
; /* TODO YET useless since stripped later
1114 * TODO on in getrawlist() etc., i.e., the argument vector producers,
1115 * TODO therefore yet needs to be set again based on flags&a_VPUT! */
1117 n_err(_("`vput' prefix does not affect `%s'\n"), gcdp
->gcd_name
);
1122 switch(gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
){
1123 case n_CMD_ARG_TYPE_MSGLIST
:
1124 /* Message list defaulting to nearest forward legal message */
1125 if(n_msgvec
== NULL
)
1127 if((c
= getmsglist(cp
, n_msgvec
, gcdp
->gcd_msgflag
)) < 0)
1130 if((n_msgvec
[0] = first(gcdp
->gcd_msgflag
, gcdp
->gcd_msgmask
)) != 0)
1133 if(n_msgvec
[0] == 0){
1134 if(!(n_pstate
& n_PS_HOOK_MASK
))
1135 fprintf(n_stdout
, _("No applicable messages\n"));
1138 rv
= (*gcdp
->gcd_func
)(n_msgvec
);
1141 case n_CMD_ARG_TYPE_NDMLIST
:
1142 /* Message list with no defaults, but no error if none exist */
1143 if(n_msgvec
== NULL
){
1145 n_err(_("Invalid use of message list\n"));
1148 if((c
= getmsglist(cp
, n_msgvec
, gcdp
->gcd_msgflag
)) < 0)
1150 rv
= (*gcdp
->gcd_func
)(n_msgvec
);
1153 case n_CMD_ARG_TYPE_STRING
:
1154 /* Just the straight string, old style, with leading blanks removed */
1155 while(spacechar(*cp
))
1157 rv
= (*gcdp
->gcd_func
)(cp
);
1159 case n_CMD_ARG_TYPE_RAWDAT
:
1160 /* Just the straight string, leading blanks removed, placed in argv[] */
1161 while(spacechar(*cp
))
1165 rv
= (*gcdp
->gcd_func
)(arglist_base
);
1168 case n_CMD_ARG_TYPE_WYSH
:
1172 case n_CMD_ARG_TYPE_WYRA
:
1173 c
= (flags
& a_WYSH
) ? 1 : 0;
1175 case n_CMD_ARG_TYPE_RAWLIST
:
1179 if((c
= getrawlist((c
!= 0), arglist
,
1180 n_MAXARGC
- PTR2SIZE(arglist
- arglist_base
),
1182 n_err(_("Invalid argument list\n"));
1186 if(c
< gcdp
->gcd_minargs
){
1187 n_err(_("`%s' requires at least %u arg(s)\n"),
1188 gcdp
->gcd_name
, (ui32_t
)gcdp
->gcd_minargs
);
1192 if(c
> gcdp
->gcd_maxargs
){
1193 n_err(_("`%s' takes no more than %u arg(s)\n"),
1194 gcdp
->gcd_name
, (ui32_t
)gcdp
->gcd_maxargs
);
1200 n_pstate
|= n_PS_ARGMOD_VPUT
;
1202 rv
= (*gcdp
->gcd_func
)(arglist_base
);
1203 if(a_go_xcall
!= NULL
)
1208 DBG( n_panic(_("Implementation error: unknown argument type: %d"),
1209 gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
); )
1213 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_H
))
1214 gecp
->gec_add_history
= (((gcdp
->gcd_caflags
& n_CMD_ARG_G
) ||
1215 (n_pstate
& n_PS_MSGLIST_GABBY
)) ? TRUM1
: TRU1
);
1217 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_EM
) && rv
== 0)
1218 n_pstate_var__em
= n_0
;
1221 ok_vset(__qm
, (rv
== 0 ? n_0
: n_1
));
1222 ok_vset(__em
, n_pstate_var__em
)
1225 if(flags
& a_IGNERR
){
1227 n_exit_status
= n_EXIT_OK
;
1230 /* Exit the current source file on error TODO what a mess! */
1232 n_pstate
&= ~n_PS_EVAL_ERROR
;
1234 n_pstate
|= n_PS_EVAL_ERROR
;
1235 if(rv
< 0 || (n_pstate
& n_PS_ROBOT
)){ /* FIXME */
1244 if((gcdp
->gcd_caflags
& n_CMD_ARG_P
) && ok_blook(autoprint
))
1246 n_go_input_inject(n_GO_INPUT_INJECT_COMMIT
, "\\type",
1247 sizeof("\\type") -1);
1249 if(!(n_pstate
& (n_PS_SOURCING
| n_PS_HOOK_MASK
)) &&
1250 !(gcdp
->gcd_caflags
& n_CMD_ARG_T
))
1251 n_pstate
|= n_PS_SAW_COMMAND
;
1253 n_pstate
&= ~n_PS_EVAL_ERROR
;
1267 static struct a_go_cmd_desc
const *
1268 a_go__firstfit(char const *comm
){ /* TODO *hashtable*! linear list search!!! */
1269 struct a_go_cmd_desc
const *gcdp
;
1272 for(gcdp
= a_go_cmd_tab
; gcdp
< &a_go_cmd_tab
[n_NELEM(a_go_cmd_tab
)]; ++gcdp
)
1273 if(*comm
== *gcdp
->gcd_name
&& is_prefix(comm
, gcdp
->gcd_name
))
1283 NYD_X
; /* Signal handler */
1285 /* nothing to do? */
1290 a_go_onintr(int s
){ /* TODO block signals while acting */
1291 NYD_X
; /* Signal handler */
1294 safe_signal(SIGINT
, a_go_onintr
);
1296 termios_state_reset();
1298 a_go_cleanup(a_GO_CLEANUP_UNWIND
| /* XXX FAKE */a_GO_CLEANUP_HOLDALLSIGS
);
1301 n_err_sighdl(_("Interrupt\n"));
1302 safe_signal(SIGPIPE
, a_go_oldpipe
);
1303 siglongjmp(a_go_srbuf
, 0); /* FIXME get rid */
1307 a_go_cleanup(enum a_go_cleanup_mode gcm
){
1308 /* Signals blocked */
1309 struct a_go_ctx
*gcp
;
1312 if(!(gcm
& a_GO_CLEANUP_HOLDALLSIGS
))
1317 /* Free input injections of this level first */
1318 if(!(gcm
& a_GO_CLEANUP_LOOPTICK
)){
1319 struct a_go_input_inject
**giipp
, *giip
;
1321 for(giipp
= &gcp
->gc_inject
; (giip
= *giipp
) != NULL
;){
1322 *giipp
= giip
->gii_next
;
1327 /* Cleanup non-crucial external stuff */
1329 if(gcp
->gc_data
.gdc_colour
!= NULL
)
1330 n_colour_stack_del(NULL
);
1333 /* Work the actual context (according to cleanup mode) */
1334 if(gcp
->gc_outer
== NULL
){
1335 if(gcm
& (a_GO_CLEANUP_UNWIND
| a_GO_CLEANUP_SIGINT
)){
1337 gcp
->gc_flags
&= ~a_GO_XCALL_LOOP
;
1339 }else if(!(n_pstate
& n_PS_SOURCING
))
1344 n_pstate
&= ~(n_PS_SOURCING
| n_PS_ROBOT
);
1345 assert(a_go_xcall
== NULL
);
1346 assert(!(gcp
->gc_flags
& a_GO_XCALL_LOOP
));
1347 assert(gcp
->gc_on_finalize
== NULL
);
1348 assert(gcp
->gc_data
.gdc_colour
== NULL
);
1350 }else if(gcm
& a_GO_CLEANUP_LOOPTICK
){
1353 }else if(gcp
->gc_flags
& a_GO_SPLICE
){ /* TODO Temporary hack */
1354 n_stdin
= gcp
->gc_splice_stdin
;
1355 n_stdout
= gcp
->gc_splice_stdout
;
1356 n_psonce
= gcp
->gc_splice_psonce
;
1360 /* Cleanup crucial external stuff */
1361 if(gcp
->gc_data
.gdc_ifcond
!= NULL
){
1362 n_cnd_if_stack_del(gcp
->gc_data
.gdc_ifcond
);
1363 if(!(gcm
& (a_GO_CLEANUP_ERROR
| a_GO_CLEANUP_SIGINT
)) &&
1365 n_err(_("Unmatched `if' at end of %s %s\n"),
1366 ((gcp
->gc_flags
& a_GO_MACRO
1367 ? (gcp
->gc_flags
& a_GO_MACRO_CMD
? _("command") : _("macro"))
1368 : _("`source'd file"))),
1370 gcm
|= a_GO_CLEANUP_ERROR
;
1373 /* Teardown context */
1374 if(gcp
->gc_flags
& a_GO_MACRO
){
1375 if(gcp
->gc_flags
& a_GO_MACRO_FREE_DATA
){
1378 while(*(lp
= &gcp
->gc_lines
[gcp
->gc_loff
]) != NULL
){
1382 /* Part of gcp's memory chunk, then */
1383 if(!(gcp
->gc_flags
& a_GO_MACRO_CMD
))
1384 n_free(gcp
->gc_lines
);
1386 }else if(gcp
->gc_flags
& a_GO_PIPE
)
1387 /* XXX command manager should -TERM then -KILL instead of hoping
1388 * XXX for exit of provider due to n_ERR_PIPE / SIGPIPE */
1389 Pclose(gcp
->gc_file
, TRU1
);
1390 else if(gcp
->gc_flags
& a_GO_FILE
)
1391 Fclose(gcp
->gc_file
);
1393 if(!(gcp
->gc_flags
& a_GO_MEMPOOL_INHERITED
)){
1394 if(gcp
->gc_data
.gdc_mempool
!= NULL
)
1395 n_memory_pool_pop(NULL
);
1400 n_go_data
= &(a_go_ctx
= gcp
->gc_outer
)->gc_data
;
1401 if((a_go_ctx
->gc_flags
& (a_GO_MACRO
| a_GO_SUPER_MACRO
)) ==
1402 (a_GO_MACRO
| a_GO_SUPER_MACRO
)){
1403 n_pstate
&= ~n_PS_SOURCING
;
1404 assert(n_pstate
& n_PS_ROBOT
);
1405 }else if(!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
))
1406 n_pstate
&= ~(n_PS_SOURCING
| n_PS_ROBOT
);
1408 assert(n_pstate
& n_PS_ROBOT
);
1410 if(gcp
->gc_on_finalize
!= NULL
)
1411 (*gcp
->gc_on_finalize
)(gcp
->gc_finalize_arg
);
1413 if(gcm
& a_GO_CLEANUP_ERROR
)
1416 if(gcp
->gc_flags
& a_GO_FREE
)
1419 if(n_UNLIKELY((gcm
& a_GO_CLEANUP_UNWIND
) && gcp
!= a_go_ctx
))
1424 if(!(gcm
& a_GO_CLEANUP_HOLDALLSIGS
))
1429 /* With *posix* we follow what POSIX says:
1430 * Any errors in the start-up file shall either cause mailx to
1431 * terminate with a diagnostic message and a non-zero status or to
1432 * continue after writing a diagnostic message, ignoring the
1433 * remainder of the lines in the start-up file
1434 * Print the diagnostic only for the outermost resource unless the user
1435 * is debugging or in verbose mode */
1436 if((n_poption
& n_PO_D_V
) ||
1437 (!(n_psonce
& n_PSO_STARTED
) &&
1438 !(gcp
->gc_flags
& (a_GO_SPLICE
| a_GO_MACRO
)) &&
1439 !(gcp
->gc_outer
->gc_flags
& a_GO_TYPE_MASK
)))
1440 /* I18N: file inclusion, macro etc. evaluation has been stopped */
1441 n_alert(_("Stopped %s %s due to errors%s"),
1442 (n_psonce
& n_PSO_STARTED
1443 ? (gcp
->gc_flags
& a_GO_SPLICE
? _("spliced in program")
1444 : (gcp
->gc_flags
& a_GO_MACRO
1445 ? (gcp
->gc_flags
& a_GO_MACRO_CMD
1446 ? _("evaluating command") : _("evaluating macro"))
1447 : (gcp
->gc_flags
& a_GO_PIPE
1448 ? _("executing `source'd pipe")
1449 : (gcp
->gc_flags
& a_GO_FILE
1450 ? _("loading `source'd file") : _(a_GO_MAINCTX_NAME
))))
1452 : (gcp
->gc_flags
& a_GO_MACRO
1453 ? (gcp
->gc_flags
& a_GO_MACRO_X_OPTION
1454 ? _("evaluating command line") : _("evaluating macro"))
1455 : _("loading initialization resource"))),
1457 (n_poption
& n_PO_DEBUG
? n_empty
: _(" (enable *debug* for trace)")));
1459 if(!(n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) && ok_blook(posix
)){
1460 if(n_poption
& n_PO_D_V
)
1461 n_alert(_("Non-interactive, bailing out due to errors "
1462 "in startup load phase"));
1469 a_go_file(char const *file
, bool_t silent_open_error
){
1470 struct a_go_ctx
*gcp
;
1480 /* Being a command argument file is space-trimmed *//* TODO v15 with
1481 * TODO WYRALIST this is no longer necessary true, and for that we
1482 * TODO don't set _PARSE_TRIMSPACE because we cannot! -> cmd-tab.h!! */
1484 ((ispipe
= (!silent_open_error
&& (nlen
= strlen(file
)) > 0 &&
1485 file
[--nlen
] == '|')))
1488 if(!silent_open_error
){
1489 for(nlen
= strlen(file
); nlen
> 0;){
1495 nbuf
= savestrbuf(file
, nlen
);
1505 if((fip
= Popen(nbuf
/* #if 0 above = savestrbuf(file, nlen)*/, "r",
1506 ok_vlook(SHELL
), NULL
, n_CHILD_FD_NULL
)) == NULL
)
1508 }else if((nbuf
= fexpand(file
, FEXP_LOCAL
)) == NULL
)
1510 else if((fip
= Fopen(nbuf
, "r")) == NULL
){
1512 if(!silent_open_error
|| (n_poption
& n_PO_D_V
))
1514 if(silent_open_error
)
1519 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
1521 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
1522 (nlen
= strlen(nbuf
) +1));
1523 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
1527 gcp
->gc_outer
= a_go_ctx
;
1528 gcp
->gc_osigmask
= osigmask
;
1530 gcp
->gc_flags
= (ispipe
? a_GO_FREE
| a_GO_PIPE
: a_GO_FREE
| a_GO_FILE
) |
1531 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
? a_GO_SUPER_MACRO
: 0);
1532 memcpy(gcp
->gc_name
, nbuf
, nlen
);
1535 n_go_data
= &gcp
->gc_data
;
1536 n_pstate
|= n_PS_SOURCING
| n_PS_ROBOT
;
1537 if(!a_go_event_loop(gcp
, n_GO_INPUT_NONE
| n_GO_INPUT_NL_ESC
))
1541 return (fip
!= NULL
);
1545 a_go_load(struct a_go_ctx
*gcp
){
1549 assert(!(n_psonce
& n_PSO_STARTED
));
1550 assert(!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
));
1552 gcp
->gc_flags
|= a_GO_MEMPOOL_INHERITED
;
1553 gcp
->gc_data
.gdc_mempool
= n_go_data
->gdc_mempool
;
1558 * Any errors in the start-up file shall either cause mailx to terminate
1559 * with a diagnostic message and a non-zero status or to continue after
1560 * writing a diagnostic message, ignoring the remainder of the lines in
1561 * the start-up file. */
1562 gcp
->gc_outer
= a_go_ctx
;
1564 n_go_data
= &gcp
->gc_data
;
1565 /* FIXME won't work for now (n_PS_ROBOT needs n_PS_SOURCING sofar)
1566 n_pstate |= n_PS_ROBOT |
1567 (gcp->gc_flags & a_GO_MACRO_X_OPTION ? 0 : n_PS_SOURCING);
1569 n_pstate
|= n_PS_ROBOT
| n_PS_SOURCING
;
1573 if(!(rv
= n_go_main_loop())){
1574 if(!(n_psonce
& n_PSO_INTERACTIVE
)){
1575 if(n_poption
& n_PO_D_V
)
1576 n_alert(_("Non-interactive program mode, forced exit"));
1578 }else if(n_poption
& n_PO_BATCH_FLAG
){
1581 if((beoe
= ok_vlook(batch_exit_on_error
)) != NULL
&& *beoe
== '1')
1582 n_pstate
|= n_PS_EXIT
;
1585 /* n_PS_EXIT handled by callers */
1591 a_go__eloopint(int sig
){ /* TODO one day, we don't need it no more */
1592 NYD_X
; /* Signal handler */
1594 siglongjmp(a_go_ctx
->gc_eloop_jmp
, 1);
1598 a_go_event_loop(struct a_go_ctx
*gcp
, enum n_go_input_flags gif
){
1599 volatile int hadint
; /* TODO get rid of shitty signal stuff (see signal.c) */
1600 sighandler_type soldhdl
;
1601 struct a_go_eval_ctx gec
;
1606 memset(&gec
, 0, sizeof gec
);
1607 osigmask
= gcp
->gc_osigmask
;
1610 if((soldhdl
= safe_signal(SIGINT
, SIG_IGN
)) != SIG_IGN
){
1611 safe_signal(SIGINT
, &a_go__eloopint
);
1612 if(sigsetjmp(gcp
->gc_eloop_jmp
, 1)){
1616 gcp
->gc_flags
&= ~a_GO_XCALL_LOOP
;
1622 for(ever
= FAL0
;; ever
= TRU1
){
1629 /* Read a line of commands and handle end of file specially */
1630 gec
.gec_line
.l
= gec
.gec_line_size
;
1632 n
= n_go_input(gif
, NULL
, &gec
.gec_line
.s
, &gec
.gec_line
.l
, NULL
);
1634 gec
.gec_line_size
= (ui32_t
)gec
.gec_line
.l
;
1635 gec
.gec_line
.l
= (ui32_t
)n
;
1641 n
= a_go_evaluate(&gec
);
1644 if(a_go_xcall
!= NULL
)
1647 beoe
= (n_poption
& n_PO_BATCH_FLAG
)
1648 ? ok_vlook(batch_exit_on_error
) : NULL
;
1651 if(beoe
!= NULL
&& *beoe
== '1'){
1652 if(n_exit_status
== n_EXIT_OK
)
1653 n_exit_status
= n_EXIT_ERR
;
1659 if(n_exit_status
!= n_EXIT_OK
)
1663 jjump
: /* TODO Should be _CLEANUP_UNWIND not _TEARDOWN on signal if DOABLE! */
1664 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
| (rv
? 0 : a_GO_CLEANUP_ERROR
) |
1665 (hadint
? a_GO_CLEANUP_SIGINT
: 0) | a_GO_CLEANUP_HOLDALLSIGS
);
1667 if(gec
.gec_line
.s
!= NULL
)
1668 n_free(gec
.gec_line
.s
);
1670 if(soldhdl
!= SIG_IGN
)
1671 safe_signal(SIGINT
, soldhdl
);
1675 sigprocmask(SIG_SETMASK
, &osigmask
, NULL
);
1682 a_go_c_read(void *v
){ /* TODO IFS? how? -r */
1684 char const **argv
, *cp
, *cp2
;
1695 n_SIGMAN_ENTER_SWITCH(&sm
, n_SIGMAN_ALL
){
1702 rv
= n_go_input(((n_pstate
& n_PS_COMPOSE_MODE
1703 ? n_GO_INPUT_CTX_COMPOSE
: n_GO_INPUT_CTX_DEFAULT
) |
1704 n_GO_INPUT_FORCE_STDIN
| n_GO_INPUT_NL_ESC
|
1705 n_GO_INPUT_PROMPT_NONE
/* XXX POSIX: PS2: yes! */),
1706 NULL
, &linebuf
, &linesize
, NULL
);
1713 for(rv
= 0; *argv
!= NULL
; ++argv
){
1716 while(spacechar(*cp
))
1721 /* The last variable gets the remaining line less trailing IFS */
1722 if(argv
[1] == NULL
){
1723 for(cp2
= cp
; *cp2
!= '\0'; ++cp2
)
1725 for(; cp2
> cp
; --cp2
){
1731 for(cp2
= cp
; (c
= *++cp2
) != '\0';)
1735 /* C99 xxx This is a CC warning workaround (-Wbad-function-cast) */{
1738 vcp
= savestrbuf(cp
, PTR2SIZE(cp2
- cp
));
1739 if(!a_go__read_set(*argv
, vcp
)){
1749 /* Set the remains to the empty string */
1750 for(; *argv
!= NULL
; ++argv
)
1751 if(!a_go__read_set(*argv
, n_empty
)){
1757 n_pstate_var__em
= n_0
;
1759 n_sigman_cleanup_ping(&sm
);
1764 n_sigman_leave(&sm
, n_SIGMAN_VIPSIGS_NTTYOUT
);
1769 a_go__read_set(char const *cp
, char const *value
){
1773 if(!n_shexp_is_valid_varname(cp
))
1774 value
= N_("not a valid variable name");
1775 else if(!n_var_is_user_writable(cp
))
1776 value
= N_("variable is read-only");
1777 else if(!n_var_vset(cp
, (uintptr_t)value
))
1778 value
= N_("failed to update variable value");
1783 n_err("`read': %s: %s\n", V_(value
), n_shexp_quote_cp(cp
, FAL0
));
1791 c_cmdnotsupp(void *vp
){
1794 n_err(_("The requested feature is not compiled in\n"));
1801 struct a_go_ctx
*gcp
;
1804 assert(n_stdin
!= NULL
);
1806 gcp
= (void*)a_go__mainctx_b
.uf
;
1807 DBGOR( memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
)),
1808 memset(&gcp
->gc_data
, 0, sizeof gcp
->gc_data
) );
1809 gcp
->gc_file
= n_stdin
;
1810 memcpy(gcp
->gc_name
, a_GO_MAINCTX_NAME
, sizeof(a_GO_MAINCTX_NAME
));
1812 n_go_data
= &gcp
->gc_data
;
1814 n_child_manager_start();
1819 n_go_main_loop(void){ /* FIXME */
1820 struct a_go_eval_ctx gec
;
1827 if (!(n_pstate
& n_PS_SOURCING
)) {
1828 if (safe_signal(SIGINT
, SIG_IGN
) != SIG_IGN
)
1829 safe_signal(SIGINT
, &a_go_onintr
);
1830 if (safe_signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
1831 safe_signal(SIGHUP
, &a_go_hangup
);
1833 a_go_oldpipe
= safe_signal(SIGPIPE
, SIG_IGN
);
1834 safe_signal(SIGPIPE
, a_go_oldpipe
);
1836 memset(&gec
, 0, sizeof gec
);
1838 (void)sigsetjmp(a_go_srbuf
, 1); /* FIXME get rid */
1839 for (eofcnt
= 0;; gec
.gec_ever_seen
= TRU1
) {
1842 if(gec
.gec_ever_seen
)
1843 a_go_cleanup(a_GO_CLEANUP_LOOPTICK
);
1845 if (!(n_pstate
& n_PS_SOURCING
)) {
1848 /* TODO Note: this buffer may contain a password. We should redefine
1849 * TODO the code flow which has to do that */
1850 if ((cp
= termios_state
.ts_linebuf
) != NULL
) {
1851 termios_state
.ts_linebuf
= NULL
;
1852 termios_state
.ts_linesize
= 0;
1853 n_free(cp
); /* TODO pool give-back */
1855 if (gec
.gec_line
.l
> LINESIZE
* 3) {
1856 n_free(gec
.gec_line
.s
);
1857 gec
.gec_line
.s
= NULL
;
1858 gec
.gec_line
.l
= gec
.gec_line_size
= 0;
1862 if (!(n_pstate
& n_PS_SOURCING
) && (n_psonce
& n_PSO_INTERACTIVE
)) {
1865 if ((cp
= ok_vlook(newmail
)) != NULL
) {
1868 /* FIXME TEST WITH NOPOLL ETC. !!! */
1869 n
= (cp
!= NULL
&& strcmp(cp
, "nopoll"));
1870 if ((mb
.mb_type
== MB_FILE
&& !stat(mailname
, &st
) &&
1871 st
.st_size
> mailsize
) ||
1872 (mb
.mb_type
== MB_MAILDIR
&& n
!= 0)) {
1873 size_t odot
= PTR2SIZE(dot
- message
);
1874 ui32_t odid
= (n_pstate
& n_PS_DID_PRINT_DOT
);
1876 if (setfile(mailname
,
1878 ((mb
.mb_perm
& MB_DELE
) ? 0 : FEDIT_RDONLY
)) < 0) {
1879 n_exit_status
|= n_EXIT_ERR
;
1883 dot
= &message
[odot
];
1888 n_exit_status
= n_EXIT_OK
;
1891 /* Read a line of commands and handle end of file specially */
1892 gec
.gec_line
.l
= gec
.gec_line_size
;
1893 n
= n_go_input(n_GO_INPUT_CTX_DEFAULT
| n_GO_INPUT_NL_ESC
, NULL
,
1894 &gec
.gec_line
.s
, &gec
.gec_line
.l
, NULL
);
1895 gec
.gec_line_size
= (ui32_t
)gec
.gec_line
.l
;
1896 gec
.gec_line
.l
= (ui32_t
)n
;
1899 if (!(n_pstate
& n_PS_ROBOT
) &&
1900 (n_psonce
& n_PSO_INTERACTIVE
) && ok_blook(ignoreeof
) &&
1902 fprintf(n_stdout
, _("*ignoreeof* set, use `quit' to quit.\n"));
1903 n_go_input_clearerr();
1909 n_pstate
&= ~n_PS_HOOK_MASK
;
1914 estat
= a_go_evaluate(&gec
);
1915 beoe
= (n_poption
& n_PO_BATCH_FLAG
)
1916 ? ok_vlook(batch_exit_on_error
) : NULL
;
1919 if(beoe
!= NULL
&& *beoe
== '1'){
1920 if(n_exit_status
== n_EXIT_OK
)
1921 n_exit_status
= n_EXIT_ERR
;
1925 if(!(n_psonce
& n_PSO_STARTED
)){ /* TODO join n_PS_EVAL_ERROR */
1926 if(!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
) ||
1927 !(a_go_ctx
->gc_flags
& a_GO_MACRO_X_OPTION
)){
1936 if(n_exit_status
!= n_EXIT_OK
)
1938 /* TODO n_PS_EVAL_ERROR and n_PS_SOURCING! Sigh!! */
1939 if((n_pstate
& (n_PS_SOURCING
| n_PS_EVAL_ERROR
)
1940 ) == n_PS_EVAL_ERROR
){
1941 n_exit_status
= n_EXIT_ERR
;
1947 if(!(n_pstate
& n_PS_SOURCING
) && (n_psonce
& n_PSO_INTERACTIVE
) &&
1948 gec
.gec_add_history
)
1949 n_tty_addhist(gec
.gec_line
.s
, (gec
.gec_add_history
!= TRU1
));
1951 if(n_pstate
& n_PS_EXIT
)
1955 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
| (rv
? 0 : a_GO_CLEANUP_ERROR
));
1957 if (gec
.gec_line
.s
!= NULL
)
1958 n_free(gec
.gec_line
.s
);
1964 n_go_input_clearerr(void){
1970 if(!(a_go_ctx
->gc_flags
& (a_GO_FORCE_EOF
|
1971 a_GO_PIPE
| a_GO_MACRO
| a_GO_SPLICE
)))
1972 fp
= a_go_ctx
->gc_file
;
1980 n_go_input_force_eof(void){
1982 a_go_ctx
->gc_flags
|= a_GO_FORCE_EOF
;
1987 n_go_input_inject(enum n_go_input_inject_flags giif
, char const *buf
,
1993 if(UIZ_MAX
- n_VSTRUCT_SIZEOF(struct a_go_input_inject
, gii_dat
) -1 > len
&&
1996 struct a_go_input_inject
*giip
, **giipp
;
2000 giip
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_input_inject
, gii_dat
2002 giipp
= &a_go_ctx
->gc_inject
;
2003 giip
->gii_next
= *giipp
;
2004 giip
->gii_commit
= ((giif
& n_GO_INPUT_INJECT_COMMIT
) != 0);
2005 if(buf
[i
= 0] != ' ' && !(giif
& n_GO_INPUT_INJECT_HISTORY
))
2006 giip
->gii_dat
[i
++] = ' '; /* TODO prim. hack to avoid history put! */
2007 memcpy(&giip
->gii_dat
[i
], buf
, len
);
2009 giip
->gii_dat
[giip
->gii_len
= i
] = '\0';
2018 (n_go_input
)(enum n_go_input_flags gif
, char const *prompt
, char **linebuf
,
2019 size_t *linesize
, char const *string n_MEMORY_DEBUG_ARGS
){
2020 /* TODO readline: linebuf pool!; n_go_input should return si64_t */
2021 struct n_string xprompt
;
2023 bool_t doprompt
, dotty
;
2028 if(!(gif
& n_GO_INPUT_HOLDALLSIGS
))
2031 if(a_go_ctx
->gc_flags
& a_GO_FORCE_EOF
){
2036 if(gif
& n_GO_INPUT_FORCE_STDIN
)
2039 /* Special case macro mode: never need to prompt, lines have always been
2040 * unfolded already */
2041 if(a_go_ctx
->gc_flags
& a_GO_MACRO
){
2042 struct a_go_input_inject
*giip
;
2044 if(*linebuf
!= NULL
)
2047 /* Injection in progress? Don't care about the autocommit state here */
2048 if((giip
= a_go_ctx
->gc_inject
) != NULL
){
2049 a_go_ctx
->gc_inject
= giip
->gii_next
;
2051 *linesize
= giip
->gii_len
;
2052 *linebuf
= (char*)giip
;
2053 memmove(*linebuf
, giip
->gii_dat
, giip
->gii_len
+1);
2054 iftype
= "INJECTION";
2056 if((*linebuf
= a_go_ctx
->gc_lines
[a_go_ctx
->gc_loff
]) == NULL
){
2062 ++a_go_ctx
->gc_loff
;
2063 *linesize
= strlen(*linebuf
);
2064 if(!(a_go_ctx
->gc_flags
& a_GO_MACRO_FREE_DATA
))
2065 *linebuf
= sbufdup(*linebuf
, *linesize
);
2067 iftype
= (a_go_ctx
->gc_flags
& a_GO_MACRO_X_OPTION
)
2069 : (a_go_ctx
->gc_flags
& a_GO_MACRO_CMD
) ? "CMD" : "MACRO";
2072 n_pstate
|= n_PS_READLINE_NL
;
2075 /* Injection in progress? */
2076 struct a_go_input_inject
**giipp
, *giip
;
2078 giipp
= &a_go_ctx
->gc_inject
;
2080 if((giip
= *giipp
) != NULL
){
2081 *giipp
= giip
->gii_next
;
2083 if(giip
->gii_commit
){
2084 if(*linebuf
!= NULL
)
2087 /* Simply reuse the buffer */
2088 n
= (int)(*linesize
= giip
->gii_len
);
2089 *linebuf
= (char*)giip
;
2090 memmove(*linebuf
, giip
->gii_dat
, giip
->gii_len
+1);
2091 iftype
= "INJECTION";
2092 n_pstate
|= n_PS_READLINE_NL
;
2095 string
= savestrbuf(giip
->gii_dat
, giip
->gii_len
);
2102 n_pstate
&= ~n_PS_READLINE_NL
;
2103 iftype
= (!(n_psonce
& n_PSO_STARTED
) ? "LOAD"
2104 : (n_pstate
& n_PS_SOURCING
) ? "SOURCE" : "READ");
2105 doprompt
= ((n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) ==
2106 (n_PSO_INTERACTIVE
| n_PSO_STARTED
) && !(n_pstate
& n_PS_ROBOT
));
2107 dotty
= (doprompt
&& !ok_blook(line_editor_disable
));
2109 gif
|= n_GO_INPUT_PROMPT_NONE
;
2112 n_string_creat_auto(&xprompt
);
2114 gif
|= n_GO_INPUT_PROMPT_EVAL
;
2117 /* Ensure stdout is flushed first anyway (partial lines, maybe?) */
2118 if(!dotty
&& (gif
& n_GO_INPUT_PROMPT_NONE
))
2121 ifile
= (gif
& n_GO_INPUT_FORCE_STDIN
) ? n_stdin
: a_go_ctx
->gc_file
;
2123 assert((n_pstate
& n_PS_COMPOSE_FORKHOOK
) &&
2124 (a_go_ctx
->gc_flags
& a_GO_MACRO
));
2128 for(nold
= n
= 0;;){
2130 assert(ifile
== n_stdin
);
2131 if(string
!= NULL
&& (n
= (int)strlen(string
)) > 0){
2135 *linesize
= (size_t)n
+ LINESIZE
+1;
2136 *linebuf
= (n_realloc
)(*linebuf
, *linesize n_MEMORY_DEBUG_ARGSCALL
);
2137 memcpy(*linebuf
, string
, (size_t)n
+1);
2143 n
= (n_tty_readline
)(gif
, prompt
, linebuf
, linesize
, n
2144 n_MEMORY_DEBUG_ARGSCALL
);
2148 if(!(gif
& n_GO_INPUT_PROMPT_NONE
))
2149 n_tty_create_prompt(&xprompt
, prompt
, gif
);
2153 if(!(gif
& n_GO_INPUT_PROMPT_NONE
) && xprompt
.s_len
> 0){
2154 fwrite(xprompt
.s_dat
, 1, xprompt
.s_len
, n_stdout
);
2158 n
= (readline_restart
)(ifile
, linebuf
, linesize
, n
2159 n_MEMORY_DEBUG_ARGSCALL
);
2163 if(n
> 0 && nold
> 0){
2168 cp
= &(*linebuf
)[nold
];
2169 while(spacechar(*cp
) && n
- i
>= nold
)
2172 memmove(&(*linebuf
)[nold
], cp
, n
- nold
- i
);
2174 (*linebuf
)[n
] = '\0';
2183 * An unquoted <backslash> at the end of a command line shall
2184 * be discarded and the next line shall continue the command */
2185 if(!(gif
& n_GO_INPUT_NL_ESC
) || (*linebuf
)[n
- 1] != '\\'){
2187 n_pstate
|= n_PS_READLINE_NL
;
2190 /* Definitely outside of quotes, thus the quoting rules are so that an
2191 * uneven number of successive reverse solidus at EOL is a continuation */
2195 for(j
= 1, i
= (size_t)n
- 1; i
-- > 0; ++j
)
2196 if((*linebuf
)[i
] != '\\')
2201 (*linebuf
)[nold
= --n
] = '\0';
2202 gif
|= n_GO_INPUT_NL_FOLLOW
;
2207 (*linebuf
)[*linesize
= n
] = '\0';
2211 if(gif
& n_GO_INPUT_DROP_TRAIL_SPC
){
2215 for(cp
= &(*linebuf
)[i
= (size_t)n
];; --i
){
2220 (*linebuf
)[n
= (int)i
] = '\0';
2223 if(gif
& n_GO_INPUT_DROP_LEAD_SPC
){
2227 for(cp
= &(*linebuf
)[0], j
= (size_t)n
, i
= 0; i
< j
; ++i
){
2233 memmove(&(*linebuf
)[0], &(*linebuf
)[i
], j
-= i
);
2234 (*linebuf
)[n
= (int)j
] = '\0';
2237 #endif /* 0 (notyet - must take care for reverse solidus escaped space) */
2239 if(n_poption
& n_PO_D_VV
)
2240 n_err(_("%s %d bytes <%s>\n"), iftype
, n
, *linebuf
);
2242 if (n_pstate
& n_PS_PSTATE_PENDMASK
)
2243 a_go_update_pstate();
2245 /* TODO We need to special case a_GO_SPLICE, since that is not managed by us
2246 * TODO but only established from the outside and we need to drop this
2247 * TODO overlay context somehow */
2248 if(n
< 0 && (a_go_ctx
->gc_flags
& a_GO_SPLICE
))
2249 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
| a_GO_CLEANUP_HOLDALLSIGS
);
2251 if(!(gif
& n_GO_INPUT_HOLDALLSIGS
))
2258 n_go_input_cp(enum n_go_input_flags gif
, char const *prompt
,
2259 char const *string
){
2262 char *linebuf
, * volatile rv
;
2270 n_SIGMAN_ENTER_SWITCH(&sm
, n_SIGMAN_ALL
){
2277 n
= n_go_input(gif
, prompt
, &linebuf
, &linesize
, string
);
2278 if(n
> 0 && *(rv
= savestrbuf(linebuf
, (size_t)n
)) != '\0' &&
2279 (gif
& n_GO_INPUT_HIST_ADD
) && (n_psonce
& n_PSO_INTERACTIVE
))
2280 n_tty_addhist(rv
, ((gif
& n_GO_INPUT_HIST_GABBY
) != 0));
2282 n_sigman_cleanup_ping(&sm
);
2287 n_sigman_leave(&sm
, n_SIGMAN_VIPSIGS_NTTYOUT
);
2292 n_go_load(char const *name
){
2293 struct a_go_ctx
*gcp
;
2298 if(name
== NULL
|| *name
== '\0')
2300 else if((fip
= Fopen(name
, "r")) == NULL
){
2301 if(n_poption
& n_PO_D_V
)
2302 n_err(_("No such file to load: %s\n"), n_shexp_quote_cp(name
, FAL0
));
2306 i
= strlen(name
) +1;
2307 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) + i
);
2308 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2311 gcp
->gc_flags
= a_GO_FREE
| a_GO_FILE
;
2312 memcpy(gcp
->gc_name
, name
, i
);
2314 if(n_poption
& n_PO_D_V
)
2315 n_err(_("Loading %s\n"), n_shexp_quote_cp(gcp
->gc_name
, FAL0
));
2317 n_pstate
&= ~n_PS_EXIT
;
2323 n_go_Xargs(char const **lines
, size_t cnt
){
2324 static char const name
[] = "-X";
2328 char uf
[n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) + sizeof(name
)];
2330 char const *srcp
, *xsrcp
;
2332 size_t imax
, i
, len
;
2333 struct a_go_ctx
*gcp
;
2337 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2339 gcp
->gc_flags
= a_GO_MACRO
| a_GO_MACRO_X_OPTION
|
2340 a_GO_SUPER_MACRO
| a_GO_MACRO_FREE_DATA
;
2341 memcpy(gcp
->gc_name
, name
, sizeof name
);
2343 /* The problem being that we want to support reverse solidus newline
2344 * escaping also within multiline -X, i.e., POSIX says:
2345 * An unquoted <backslash> at the end of a command line shall
2346 * be discarded and the next line shall continue the command
2347 * Therefore instead of "gcp->gc_lines = n_UNCONST(lines)", duplicate the
2348 * entire lines array and set _MACRO_FREE_DATA */
2350 gcp
->gc_lines
= n_alloc(sizeof(*gcp
->gc_lines
) * imax
);
2352 /* For each of the input lines.. */
2353 for(i
= len
= 0, cp
= NULL
; cnt
> 0;){
2357 if((j
= strlen(srcp
= *lines
)) == 0){
2362 /* Separate one line from a possible multiline input string */
2363 if((xsrcp
= memchr(srcp
, '\n', j
)) != NULL
){
2365 j
= PTR2SIZE(xsrcp
- srcp
);
2369 /* The (separated) string may itself indicate soft newline escaping */
2370 if((keep
= (srcp
[j
- 1] == '\\'))){
2373 /* Need an uneven number of reverse solidus */
2374 for(xk
= 1, xj
= j
- 1; xj
-- > 0; ++xk
)
2375 if(srcp
[xj
] != '\\')
2383 /* Strip any leading WS from follow lines, then */
2385 while(j
> 0 && spacechar(*srcp
))
2389 if(i
+ 2 >= imax
){ /* TODO need a vector (main.c, here, ++) */
2391 gcp
->gc_lines
= n_realloc(gcp
->gc_lines
, sizeof(*gcp
->gc_lines
) *
2394 gcp
->gc_lines
[i
] = cp
= n_realloc(cp
, len
+ j
+1);
2395 memcpy(&cp
[len
], srcp
, j
);
2396 cp
[len
+= j
] = '\0';
2405 assert(i
+ 1 < imax
);
2406 gcp
->gc_lines
[i
++] = cp
;
2408 gcp
->gc_lines
[i
] = NULL
;
2411 if(n_pstate
& n_PS_EXIT
)
2412 exit(n_exit_status
);
2421 rv
= (a_go_file(*(char**)v
, FAL0
) == TRU1
) ? 0 : 1;
2427 c_source_if(void *v
){ /* XXX obsolete?, support file tests in `if' etc.! */
2431 rv
= (a_go_file(*(char**)v
, TRU1
) == TRU1
) ? 0 : 1;
2437 n_go_macro(enum n_go_input_flags gif
, char const *name
, char **lines
,
2438 void (*on_finalize
)(void*), void *finalize_arg
){
2439 struct a_go_ctx
*gcp
;
2445 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2447 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2448 (i
= strlen(name
) +1));
2449 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2453 gcp
->gc_outer
= a_go_ctx
;
2454 gcp
->gc_osigmask
= osigmask
;
2455 gcp
->gc_flags
= a_GO_FREE
| a_GO_MACRO
| a_GO_MACRO_FREE_DATA
|
2456 ((!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
) ||
2457 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
)) ? a_GO_SUPER_MACRO
: 0);
2458 gcp
->gc_lines
= lines
;
2459 gcp
->gc_on_finalize
= on_finalize
;
2460 gcp
->gc_finalize_arg
= finalize_arg
;
2461 memcpy(gcp
->gc_name
, name
, i
);
2464 n_go_data
= &gcp
->gc_data
;
2465 n_pstate
|= n_PS_ROBOT
;
2466 rv
= a_go_event_loop(gcp
, gif
);
2468 /* Shall this enter a `xcall' stack avoidance optimization (loop)? */
2469 if(a_go_xcall
!= NULL
){
2470 if(a_go_xcall
== (struct a_go_xcall
*)-1)
2472 else if(a_go_xcall
->gx_upto
== gcp
){
2473 /* Indicate that "our" (ex-) parent now hosts xcall optimization */
2474 a_go_ctx
->gc_flags
|= a_GO_XCALL_LOOP
;
2475 while(a_go_xcall
!= NULL
){
2477 struct a_go_xcall
*gxp
;
2484 /* Recreate the ARGV of this command on the LOFI memory of the
2485 * hosting a_go_ctx, so that it will become auto-reclaimed */
2489 vp
= n_lofi_alloc(gxp
->gx_buflen
);
2493 cp
+= sizeof(*argv
) * (gxp
->gx_argc
+ 1);
2494 for(i
= 0; i
< gxp
->gx_argc
; ++i
){
2496 memcpy(cp
, gxp
->gx_argv
[i
].s
, gxp
->gx_argv
[i
].l
+1);
2497 cp
+= gxp
->gx_argv
[i
].l
+1;
2504 rv
= (c_call(argv
) == 0);
2508 a_go_ctx
->gc_flags
&= ~a_GO_XCALL_LOOP
;
2516 n_go_command(enum n_go_input_flags gif
, char const *cmd
){
2517 struct a_go_ctx
*gcp
;
2523 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2527 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2528 ial
+ 2*sizeof(char*));
2529 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2533 gcp
->gc_outer
= a_go_ctx
;
2534 gcp
->gc_osigmask
= osigmask
;
2535 gcp
->gc_flags
= a_GO_FREE
| a_GO_MACRO
| a_GO_MACRO_CMD
|
2536 ((!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
) ||
2537 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
)) ? a_GO_SUPER_MACRO
: 0);
2538 gcp
->gc_lines
= (void*)&gcp
->gc_name
[ial
];
2539 memcpy(gcp
->gc_lines
[0] = &gcp
->gc_name
[0], cmd
, i
);
2540 gcp
->gc_lines
[1] = NULL
;
2543 n_go_data
= &gcp
->gc_data
;
2544 n_pstate
|= n_PS_ROBOT
;
2545 rv
= a_go_event_loop(gcp
, gif
);
2551 n_go_splice_hack(char const *cmd
, FILE *new_stdin
, FILE *new_stdout
,
2552 ui32_t new_psonce
, void (*on_finalize
)(void*), void *finalize_arg
){
2553 struct a_go_ctx
*gcp
;
2558 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2560 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2561 (i
= strlen(cmd
) +1));
2562 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2566 gcp
->gc_outer
= a_go_ctx
;
2567 gcp
->gc_osigmask
= osigmask
;
2568 gcp
->gc_file
= new_stdin
;
2569 gcp
->gc_flags
= a_GO_FREE
| a_GO_SPLICE
;
2570 gcp
->gc_on_finalize
= on_finalize
;
2571 gcp
->gc_finalize_arg
= finalize_arg
;
2572 gcp
->gc_splice_stdin
= n_stdin
;
2573 gcp
->gc_splice_stdout
= n_stdout
;
2574 gcp
->gc_splice_psonce
= n_psonce
;
2575 memcpy(gcp
->gc_name
, cmd
, i
);
2577 n_stdin
= new_stdin
;
2578 n_stdout
= new_stdout
;
2579 n_psonce
= new_psonce
;
2581 n_pstate
|= n_PS_ROBOT
;
2588 n_go_splice_hack_remove_after_jump(void){
2589 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
);
2593 n_go_may_yield_control(void){ /* TODO this is a terrible hack */
2594 struct a_go_ctx
*gcp
;
2600 /* Only when interactive and startup completed */
2601 if((n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) !=
2602 (n_PSO_INTERACTIVE
| n_PSO_STARTED
))
2605 /* Not when running any hook */
2606 if(n_pstate
& n_PS_HOOK_MASK
)
2609 /* Traverse up the stack:
2610 * . not when controlled by a child process
2611 * TODO . not when there are pipes involved, we neither handle job control,
2612 * TODO nor process groups, that is, controlling terminal acceptably
2613 * . not when sourcing a file */
2614 for(gcp
= a_go_ctx
; gcp
!= NULL
; gcp
= gcp
->gc_outer
){
2615 if(gcp
->gc_flags
& (a_GO_PIPE
| a_GO_FILE
| a_GO_SPLICE
))