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 -aliases 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 */
102 a_GO_XCALL_LOOP_ERROR
= 1u<<25, /* .. state machine error transporter */
103 a_GO_XCALL_LOOP_MASK
= a_GO_XCALL_LOOP
| a_GO_XCALL_LOOP_ERROR
106 enum a_go_cleanup_mode
{
107 a_GO_CLEANUP_UNWIND
= 1u<<0, /* Teardown all contexts except outermost */
108 a_GO_CLEANUP_TEARDOWN
= 1u<<1, /* Teardown current context */
109 a_GO_CLEANUP_LOOPTICK
= 1u<<2, /* Normal looptick cleanup */
110 a_GO_CLEANUP_MODE_MASK
= n_BITENUM_MASK(0, 2),
112 a_GO_CLEANUP_ERROR
= 1u<<8, /* Error occurred on level */
113 a_GO_CLEANUP_SIGINT
= 1u<<9, /* Interrupt signal received */
114 a_GO_CLEANUP_HOLDALLSIGS
= 1u<<10 /* hold_all_sigs() active TODO */
117 struct a_go_cmd_desc
{
118 char const *gcd_name
; /* Name of command */
119 int (*gcd_func
)(void*); /* Implementor of command */
120 enum n_cmd_arg_flags gcd_caflags
;
121 si16_t gcd_msgflag
; /* Required flags of msgs */
122 si16_t gcd_msgmask
; /* Relevant flags of msgs */
123 #ifdef HAVE_DOCSTRINGS
124 char const *gcd_doc
; /* One line doc for command */
127 /* Yechh, can't initialize unions */
128 #define gcd_minargs gcd_msgflag /* Minimum argcount for WYSH/WYRA/RAWLIST */
129 #define gcd_maxargs gcd_msgmask /* Max argcount for WYSH/WYRA/RAWLIST */
131 struct a_go_alias
{ /* TODO binary search */
132 struct a_go_alias
*ga_next
;
133 struct str ga_cmd
; /* Data follows after .ga_name */
134 char ga_name
[n_VFIELD_SIZE(0)];
137 struct a_go_eval_ctx
{
138 struct str gec_line
; /* The terminated data to _evaluate() */
139 ui32_t gec_line_size
; /* May be used to store line memory size */
141 bool_t gec_ever_seen
; /* Has ever been used (main_loop() only) */
142 bool_t gec_add_history
; /* Add command to history (TRUM1=gabby)? */
145 struct a_go_input_inject
{
146 struct a_go_input_inject
*gii_next
;
149 char gii_dat
[n_VFIELD_SIZE(7)];
153 struct a_go_ctx
*gc_outer
;
154 sigset_t gc_osigmask
;
155 ui32_t gc_flags
; /* enum a_go_flags */
156 ui32_t gc_loff
; /* Pseudo (macro): index in .gc_lines */
157 char **gc_lines
; /* Pseudo content, lines unfolded */
158 FILE *gc_file
; /* File we were in, if applicable */
159 struct a_go_input_inject
*gc_inject
; /* To be consumed first */
160 void (*gc_on_finalize
)(void *);
161 void *gc_finalize_arg
;
162 sigjmp_buf gc_eloop_jmp
; /* TODO one day... for _event_loop() */
163 /* SPLICE hacks: saved stdin/stdout, saved pstate */
164 FILE *gc_splice_stdin
;
165 FILE *gc_splice_stdout
;
166 ui32_t gc_splice_psonce
;
167 ui8_t gc_splice__dummy
[4];
168 struct n_go_data_ctx gc_data
;
169 char gc_name
[n_VFIELD_SIZE(0)]; /* Name of file or macro */
173 struct a_go_ctx
*gx_upto
; /* Unroll stack up to this level */
174 size_t gx_buflen
; /* ARGV requires that much bytes, all in all */
176 struct str gx_argv
[n_VFIELD_SIZE(0)];
179 static sighandler_type a_go_oldpipe
;
180 static struct a_go_alias
*a_go_aliases
;
181 /* a_go_cmd_tab[] after fun protos */
183 /* Our current execution context, and the buffer backing the outermost level */
184 static struct a_go_ctx
*a_go_ctx
;
186 #define a_GO_MAINCTX_NAME "Main event loop"
189 char uf
[n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
190 sizeof(a_GO_MAINCTX_NAME
)];
193 /* `xcall' stack-avoidance bypass optimization */
194 static struct a_go_xcall
*a_go_xcall
;
196 static sigjmp_buf a_go_srbuf
; /* TODO GET RID */
198 /* Isolate the command from the arguments */
199 static char *a_go_isolate(char const *comm
);
202 static int a_go_c_eval(void *vp
);
205 static int a_go_c_xcall(void *vp
);
207 /* `(un)?commandalias' */
208 static int a_go_c_alias(void *vp
);
209 static int a_go_c_unalias(void *vp
);
211 /* Create a multiline info string about all known additional infos for lcp */
212 #ifdef HAVE_DOCSTRINGS
213 static char const *a_go_cmdinfo(struct a_go_cmd_desc
const *gcdp
);
216 /* Print a list of all commands */
217 static int a_go_c_list(void *vp
);
219 static int a_go__pcmd_cmp(void const *s1
, void const *s2
);
221 /* `help' / `?' command */
222 static int a_go_c_help(void *vp
);
224 /* `exit' and `quit' commands */
225 static int a_go_c_exit(void *vp
);
226 static int a_go_c_quit(void *vp
);
228 /* Print the version number of the binary */
229 static int a_go_c_version(void *vp
);
231 static int a_go__version_cmp(void const *s1
, void const *s2
);
233 /* n_PS_STATE_PENDMASK requires some actions */
234 static void a_go_update_pstate(void);
236 /* Evaluate a single command */
237 static bool_t
a_go_evaluate(struct a_go_eval_ctx
*gecp
);
239 /* Get first-fit, or NULL */
240 static struct a_go_cmd_desc
const *a_go__firstfit(char const *comm
);
242 /* Branch here on hangup signal and simulate "exit" */
243 static void a_go_hangup(int s
);
245 /* The following gets called on receipt of an interrupt */
246 static void a_go_onintr(int s
);
248 /* Cleanup current execution context, update the program state.
249 * If _CLEANUP_ERROR is set then we don't alert and error out if the stack
250 * doesn't exist at all, unless _CLEANUP_HOLDALLSIGS we hold_all_sigs() */
251 static void a_go_cleanup(enum a_go_cleanup_mode gcm
);
253 /* `source' and `source_if' (if silent_open_error: no pipes allowed, then).
254 * Returns FAL0 if file is somehow not usable (unless silent_open_error) or
255 * upon evaluation error, and TRU1 on success */
256 static bool_t
a_go_file(char const *file
, bool_t silent_open_error
);
258 /* System resource file load()ing or -X command line option array traversal */
259 static bool_t
a_go_load(struct a_go_ctx
*gcp
);
261 /* A simplified command loop for recursed state machines */
262 static bool_t
a_go_event_loop(struct a_go_ctx
*gcp
, enum n_go_input_flags gif
);
265 static int a_go_c_read(void *vp
);
267 static bool_t
a_go__read_set(char const *cp
, char const *value
);
269 /* List of all commands, and list of commands which are specially treated
270 * and deduced in _evaluate(), but must offer normal descriptions for others */
271 #ifdef HAVE_DOCSTRINGS
276 static struct a_go_cmd_desc
const a_go_cmd_tab
[] = {
279 a_go_special_cmd_tab
[] = {
280 { n_ns
, NULL
, n_CMD_ARG_TYPE_STRING
, 0, 0
281 DS(N_("Comment command: ignore remaining (continuable) line")) },
282 { "-", NULL
, n_CMD_ARG_TYPE_WYSH
, 0, 0
283 DS(N_("Print out the preceding message")) }
288 a_go_isolate(char const *comm
){
290 while(*comm
!= '\0' &&
291 strchr("~|? \t0123456789&%@$^.:/-+*'\",;(`", *comm
) == NULL
)
294 return n_UNCONST(comm
);
298 a_go_c_eval(void *vp
){
299 /* TODO HACK! `eval' should be nothing else but a command prefix, evaluate
300 * TODO ARGV with shell rules, but if that is not possible then simply
301 * TODO adjust argv/argc of "the CmdCtx" that we will have "exec" real cmd */
302 struct n_string s_b
, *sp
;
305 char const **argv
, *cp
;
310 for(j
= i
= 0; (cp
= argv
[i
]) != NULL
; ++i
)
313 sp
= n_string_creat_auto(&s_b
);
314 sp
= n_string_reserve(sp
, j
);
316 for(i
= 0; (cp
= argv
[i
]) != NULL
; ++i
){
318 sp
= n_string_push_c(sp
, ' ');
319 sp
= n_string_push_cp(sp
, cp
);
322 /* TODO HACK! We should inherit the current n_go_input_flags via CmdCtx,
323 * TODO for now we don't have such sort of! n_PS_COMPOSE_MODE is a hack
324 * TODO by itself, since ever: misuse the hack for a hack.
325 * TODO Further more, exit handling is very grazy */
326 (void)/*XXX*/n_go_command((n_pstate
& n_PS_COMPOSE_MODE
327 ? n_GO_INPUT_CTX_COMPOSE
: n_GO_INPUT_CTX_DEFAULT
), n_string_cp(sp
));
329 /* n_pstate_err_no = n_pstate_err_no; */
330 rv
= (a_go_xcall
!= NULL
) ? 0 : n_pstate_ex_no
;
336 a_go_c_xcall(void *vp
){
337 struct a_go_xcall
*gxp
;
340 char const **oargv
, *cp
;
342 struct a_go_ctx
*gcp
;
345 /* The context can only be a macro context, except that possibly a single
346 * level of `eval' (TODO: yet) was used to double-expand our arguments */
347 if((gcp
= a_go_ctx
)->gc_flags
& a_GO_MACRO_CMD
)
349 if((gcp
->gc_flags
& (a_GO_MACRO
| a_GO_MACRO_CMD
)) != a_GO_MACRO
)
352 /* Try to roll up the stack as much as possible.
353 * See a_GO_XCALL_LOOP flag description for more */
354 if(gcp
->gc_outer
!= NULL
){
355 if(gcp
->gc_outer
->gc_flags
& a_GO_XCALL_LOOP
)
358 /* Otherwise this macro is invoked from the top level, in which case we
359 * silently act as if we were `call'... */
361 /* ...which means we must ensure the rest of the macro that was us
362 * doesn't become evaluated! */
363 a_go_xcall
= (struct a_go_xcall
*)-1;
369 for(j
= i
= 0; (cp
= oargv
[i
]) != NULL
; ++i
)
372 gxp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_xcall
, gx_argv
) +
373 (sizeof(struct str
) * i
) + ++j
);
375 gxp
->gx_buflen
= (sizeof(char*) * (i
+ 1)) + j
; /* ARGV inc. strings! */
377 xcp
= (char*)&gxp
->gx_argv
[i
];
379 for(i
= 0; (cp
= oargv
[i
]) != NULL
; ++i
){
380 gxp
->gx_argv
[i
].l
= j
= strlen(cp
);
381 gxp
->gx_argv
[i
].s
= xcp
;
382 memcpy(xcp
, cp
, ++j
);
392 n_err(_("`xcall': can only be used inside a macro\n"));
393 n_pstate_err_no
= n_ERR_INVAL
;
399 a_go_c_alias(void *vp
){
400 struct a_go_alias
*lgap
, *gap
;
412 if((fp
= Ftmp(NULL
, "commandalias", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)
416 for(i
= 0, gap
= a_go_aliases
; gap
!= NULL
; gap
= gap
->ga_next
)
417 fprintf(fp
, "commandalias %s %s\n",
418 gap
->ga_name
, n_shexp_quote_cp(gap
->ga_cmd
.s
, TRU1
));
421 page_or_print(fp
, i
);
427 /* Verify the name is a valid one, and not a command modifier */
428 if(*argv
[0] == '\0' || *a_go_isolate(argv
[0]) != '\0' ||
429 !asccasecmp(argv
[0], "ignerr") || !asccasecmp(argv
[0], "wysh") ||
430 !asccasecmp(argv
[0], "vput")){
431 n_err(_("`commandalias': cannot canonicalize %s\n"),
432 n_shexp_quote_cp(argv
[0], FAL0
));
437 /* Show command of single alias? */
439 for(gap
= a_go_aliases
; gap
!= NULL
; gap
= gap
->ga_next
)
440 if(!strcmp(argv
[0], gap
->ga_name
)){
441 fprintf(n_stdout
, "commandalias %s %s\n",
442 gap
->ga_name
, n_shexp_quote_cp(gap
->ga_cmd
.s
, TRU1
));
445 n_err(_("`commandalias': no such alias: %s\n"), argv
[0]);
450 /* Define command for alias: verify command content */
451 for(cl
= 0, i
= 1; (cp
= n_UNCONST(argv
[i
])) != NULL
; ++i
)
453 cl
+= strlen(cp
) +1; /* SP or NUL */
455 n_err(_("`commandalias': empty arguments after %s\n"), argv
[0]);
460 /* If the alias already exists, recreate */
461 for(lgap
= NULL
, gap
= a_go_aliases
; gap
!= NULL
;
462 lgap
= gap
, gap
= gap
->ga_next
)
463 if(!strcmp(gap
->ga_name
, argv
[0])){
465 lgap
->ga_next
= gap
->ga_next
;
467 a_go_aliases
= gap
->ga_next
;
472 nl
= strlen(argv
[0]) +1;
473 gap
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_alias
, ga_name
) + nl
+ cl
);
474 gap
->ga_next
= a_go_aliases
;
476 memcpy(gap
->ga_name
, argv
[0], nl
);
477 cp
= gap
->ga_cmd
.s
= &gap
->ga_name
[nl
];
478 gap
->ga_cmd
.l
= --cl
;
480 while(*++argv
!= NULL
)
481 if((i
= strlen(*argv
)) > 0){
482 memcpy(cp
, *argv
, i
);
493 a_go_c_unalias(void *vp
){
494 struct a_go_alias
*lgap
, *gap
;
495 char const **argv
, *cp
;
502 while((cp
= *argv
++) != NULL
){
503 if(cp
[0] == '*' && cp
[1] == '\0'){
504 while((gap
= a_go_aliases
) != NULL
){
505 a_go_aliases
= gap
->ga_next
;
509 for(lgap
= NULL
, gap
= a_go_aliases
; gap
!= NULL
;
510 lgap
= gap
, gap
= gap
->ga_next
)
511 if(!strcmp(gap
->ga_name
, cp
)){
513 lgap
->ga_next
= gap
->ga_next
;
515 a_go_aliases
= gap
->ga_next
;
519 n_err(_("`uncommandalias': no such alias: %s\n"),
520 n_shexp_quote_cp(cp
, FAL0
));
529 #ifdef HAVE_DOCSTRINGS
531 a_go_cmdinfo(struct a_go_cmd_desc
const *gcdp
){
532 struct n_string rvb
, *rv
;
536 rv
= n_string_creat_auto(&rvb
);
537 rv
= n_string_reserve(rv
, 80);
539 switch(gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
){
540 case n_CMD_ARG_TYPE_MSGLIST
:
541 cp
= N_("message-list");
543 case n_CMD_ARG_TYPE_STRING
:
544 case n_CMD_ARG_TYPE_RAWDAT
:
545 cp
= N_("string data");
547 case n_CMD_ARG_TYPE_RAWLIST
:
548 cp
= N_("old-style quoting");
550 case n_CMD_ARG_TYPE_NDMLIST
:
551 cp
= N_("message-list (no default)");
553 case n_CMD_ARG_TYPE_WYRA
:
554 cp
= N_("`wysh' for sh(1)ell-style quoting");
557 case n_CMD_ARG_TYPE_WYSH
:
558 cp
= (gcdp
->gcd_minargs
== 0 && gcdp
->gcd_maxargs
== 0)
559 ? N_("sh(1)ell-style quoting (takes no arguments)")
560 : N_("sh(1)ell-style quoting");
563 rv
= n_string_push_cp(rv
, V_(cp
));
565 if(gcdp
->gcd_caflags
& n_CMD_ARG_V
)
566 rv
= n_string_push_cp(rv
, _(" | vput modifier"));
567 if(gcdp
->gcd_caflags
& n_CMD_ARG_EM
)
568 rv
= n_string_push_cp(rv
, _(" | error in *!*"));
570 if(gcdp
->gcd_caflags
& n_CMD_ARG_A
)
571 rv
= n_string_push_cp(rv
, _(" | needs box"));
572 if(gcdp
->gcd_caflags
& n_CMD_ARG_I
)
573 rv
= n_string_push_cp(rv
, _(" | ok: batch or interactive"));
574 if(gcdp
->gcd_caflags
& n_CMD_ARG_M
)
575 rv
= n_string_push_cp(rv
, _(" | ok: send mode"));
576 if(gcdp
->gcd_caflags
& n_CMD_ARG_R
)
577 rv
= n_string_push_cp(rv
, _(" | not ok: compose mode"));
578 if(gcdp
->gcd_caflags
& n_CMD_ARG_S
)
579 rv
= n_string_push_cp(rv
, _(" | not ok: during startup"));
580 if(gcdp
->gcd_caflags
& n_CMD_ARG_X
)
581 rv
= n_string_push_cp(rv
, _(" | ok: subprocess"));
583 if(gcdp
->gcd_caflags
& n_CMD_ARG_G
)
584 rv
= n_string_push_cp(rv
, _(" | gabby history"));
586 cp
= n_string_cp(rv
);
590 #endif /* HAVE_DOCSTRINGS */
593 a_go_c_list(void *vp
){
595 struct a_go_cmd_desc
const **gcdpa
, *gcdp
, **gcdpa_curr
;
599 i
= n_NELEM(a_go_cmd_tab
) + n_NELEM(a_go_special_cmd_tab
) +1;
600 gcdpa
= n_autorec_alloc(sizeof(gcdp
) * i
);
602 for(i
= 0; i
< n_NELEM(a_go_cmd_tab
); ++i
)
603 gcdpa
[i
] = &a_go_cmd_tab
[i
];
607 for(j
= 0; j
< n_NELEM(a_go_special_cmd_tab
); ++i
, ++j
)
608 gcdpa
[i
] = &a_go_special_cmd_tab
[j
];
612 if(*(void**)vp
== NULL
)
613 qsort(gcdpa
, i
, sizeof(*gcdpa
), &a_go__pcmd_cmp
);
615 if((fp
= Ftmp(NULL
, "list", OF_RDWR
| OF_UNLINK
| OF_REGISTER
)) == NULL
)
618 fprintf(fp
, _("Commands are:\n"));
619 scrwid
= n_SCRNWIDTH_FOR_LISTS
;
621 for(i
= 0, gcdpa_curr
= gcdpa
; (gcdp
= *gcdpa_curr
++) != NULL
;){
622 if(gcdp
->gcd_func
== &c_cmdnotsupp
)
624 if(n_poption
& n_PO_D_V
){
625 fprintf(fp
, "%s\n", gcdp
->gcd_name
);
627 #ifdef HAVE_DOCSTRINGS
628 fprintf(fp
, " : %s\n", V_(gcdp
->gcd_doc
));
630 fprintf(fp
, " : %s\n", a_go_cmdinfo(gcdp
));
636 if((i
+= (j
= strlen(gcdp
->gcd_name
) + 2)) > scrwid
){
641 fprintf(fp
, (*gcdpa_curr
!= NULL
? "%s, " : "%s\n"), gcdp
->gcd_name
);
646 page_or_print(fp
, l
);
654 a_go__pcmd_cmp(void const *s1
, void const *s2
){
655 struct a_go_cmd_desc
const * const *gcdpa1
, * const *gcdpa2
;
661 rv
= strcmp((*gcdpa1
)->gcd_name
, (*gcdpa2
)->gcd_name
);
667 a_go_c_help(void *vp
){
672 /* Help for a single command? */
673 if((arg
= *(char**)vp
) != NULL
){
674 struct a_go_alias
const *gap
;
675 struct a_go_cmd_desc
const *gcdp
, *gcdp_max
;
677 /* Aliases take precedence */
678 for(gap
= a_go_aliases
; gap
!= NULL
; gap
= gap
->ga_next
)
679 if(!strcmp(arg
, gap
->ga_name
)){
680 fprintf(n_stdout
, "%s -> ", arg
);
685 gcdp_max
= &(gcdp
= a_go_cmd_tab
)[n_NELEM(a_go_cmd_tab
)];
687 for(; gcdp
< gcdp_max
; ++gcdp
){
688 if(is_prefix(arg
, gcdp
->gcd_name
)){
689 fputs(arg
, n_stdout
);
690 if(strcmp(arg
, gcdp
->gcd_name
))
691 fprintf(n_stdout
, " (%s)", gcdp
->gcd_name
);
695 #ifdef HAVE_DOCSTRINGS
696 fprintf(n_stdout
, ": %s", V_(gcdp
->gcd_doc
));
697 if(n_poption
& n_PO_D_V
)
698 fprintf(n_stdout
, "\n : %s", a_go_cmdinfo(gcdp
));
700 putc('\n', n_stdout
);
705 if(gcdp_max
== &a_go_cmd_tab
[n_NELEM(a_go_cmd_tab
)]){
707 a_go_special_cmd_tab
)[n_NELEM(a_go_special_cmd_tab
)];
712 fprintf(n_stdout
, "%s\n", n_shexp_quote_cp(arg
, TRU1
));
715 n_err(_("Unknown command: `%s'\n"), arg
);
719 /* Very ugly, but take care for compiler supported string lengths :( */
720 fputs(n_progname
, n_stdout
);
722 " commands -- <msglist> denotes message specifications,\n"
723 "e.g., 1-5, :n or ., separated by spaces:\n"), n_stdout
);
726 "type <msglist> type (`print') messages (honour `headerpick' etc.)\n"
727 "Type <msglist> like `type' but always show all headers\n"
728 "next goto and type next message\n"
729 "from <msglist> (search and) print header summary for the given list\n"
730 "headers header summary for messages surrounding \"dot\"\n"
731 "delete <msglist> delete messages (can be `undelete'd)\n"),
736 "save <msglist> folder append messages to folder and mark as saved\n"
737 "copy <msglist> folder like `save', but don't mark them (`move' moves)\n"
738 "write <msglist> file write message contents to file (prompts for parts)\n"
739 "Reply <msglist> reply to message senders only\n"
740 "reply <msglist> like `Reply', but address all recipients\n"
741 "Lreply <msglist> forced mailing-list `reply' (see `mlist')\n"),
746 "mail <recipients> compose a mail for the given recipients\n"
747 "file folder change to another mailbox\n"
748 "File folder like `file', but open readonly\n"
749 "quit quit and apply changes to the current mailbox\n"
750 "xit or exit like `quit', but discard changes\n"
751 "!shell command shell escape\n"
752 "list [<anything>] all available commands [in search order]\n"),
755 rv
= (ferror(n_stdout
) != 0);
763 a_go_c_exit(void *vp
){
766 n_psonce
|= n_PSO_XIT
;
772 a_go_c_quit(void *vp
){
775 n_psonce
|= n_PSO_QUIT
;
781 a_go_c_version(void *vp
){
784 char const *cp
, **arr
;
789 fprintf(n_stdout
, _("%s version %s\nFeatures included (+) or not (-)\n"),
790 n_uagent
, ok_vlook(version
));
792 /* *features* starts with dummy byte to avoid + -> *folder* expansions */
793 i
= strlen(cp
= &ok_vlook(features
)[1]) +1;
794 iop
= n_autorec_alloc(i
);
797 arr
= n_autorec_alloc(sizeof(cp
) * VAL_FEATURES_CNT
);
798 for(longest
= 0, i
= 0; (cp
= n_strsep(&iop
, ',', TRU1
)) != NULL
; ++i
){
801 longest
= n_MAX(longest
, (int)i2
);
803 qsort(arr
, i
, sizeof(cp
), &a_go__version_cmp
);
805 /* We use aligned columns, so don't use n_SCRNWIDTH_FOR_LISTS */
806 for(++longest
, i2
= 0; i
-- > 0;){
808 fprintf(n_stdout
, "%-*s ", longest
, cp
);
810 if(UICMP(z
, ++i2
+ longest
, >=, n_scrnwidth
) || i
== 0){
812 putc('\n', n_stdout
);
816 if((rv
= ferror(n_stdout
) != 0))
823 a_go__version_cmp(void const *s1
, void const *s2
){
824 char const * const *cp1
, * const *cp2
;
830 rv
= strcmp(&(*cp1
)[1], &(*cp2
)[1]);
836 a_go_update_pstate(void){
840 act
= ((n_pstate
& n_PS_SIGWINCH_PEND
) != 0);
841 n_pstate
&= ~n_PS_PSTATE_PENDMASK
;
846 snprintf(buf
, sizeof buf
, "%d", n_scrnwidth
);
847 ok_vset(COLUMNS
, buf
);
848 snprintf(buf
, sizeof buf
, "%d", n_scrnheight
);
855 a_go_evaluate(struct a_go_eval_ctx
*gecp
){
856 /* xxx old style(9), but also old code */
857 /* TODO a_go_evaluate() should be splitted in multiple subfunctions,
858 * TODO `eval' should be a prefix, etc., a Ctx should be passed along */
860 char _wordbuf
[2], **arglist_base
/*[n_MAXARGC]*/, **arglist
, *cp
, *word
;
861 struct a_go_alias
*gap
;
862 struct a_go_cmd_desc
const *gcdp
;
863 si32_t nerrn
, nexn
; /* TODO n_pstate_ex_no -> si64_t! */
867 a_ALIAS_MASK
= n_BITENUM_MASK(0, 2), /* Alias recursion counter bits */
868 a_NOPREFIX
= 1u<<4, /* Modifier prefix not allowed right now */
869 a_NOALIAS
= 1u<<5, /* "No alias!" expansion modifier */
870 /* New modifier prefixes must be reflected in a_go_c_alias()! */
871 a_IGNERR
= 1u<<6, /* ignerr modifier prefix */
872 a_WYSH
= 1u<<7, /* XXX v15+ drop wysh modifier prefix */
873 a_VPUT
= 1u<<8, /* vput modifier prefix */
874 a_NO_ERRNO
= 1u<<16 /* Don't set n_pstate_err_no */
885 arglist_base
= n_autorec_alloc(sizeof(*arglist_base
) * n_MAXARGC
);
886 line
= gecp
->gec_line
; /* XXX don't change original (buffer pointer) */
887 assert(line
.s
[line
.l
] == '\0');
888 gecp
->gec_add_history
= FAL0
;
890 /* Aliases that refer to shell commands or macro expansion restart */
893 /* Strip the white space away from end and beginning of command */
898 for(cp
= &line
.s
[i
-1]; spacechar(*cp
); --cp
)
902 for(cp
= line
.s
; spacechar(*cp
); ++cp
)
904 line
.l
-= PTR2SIZE(cp
- line
.s
);
906 /* Ignore null commands (comments) */
910 /* Handle ! differently to get the correct lexical conventions */
914 /* Isolate the actual command; since it may not necessarily be
915 * separated from the arguments (as in `p1') we need to duplicate it to
916 * be able to create a NUL terminated version.
917 * We must be aware of several special one letter commands here */
918 else if((cp
= a_go_isolate(cp
)) == arglist
[0] &&
919 (*cp
== '|' || *cp
== '~' || *cp
== '?'))
921 c
= (int)PTR2SIZE(cp
- arglist
[0]);
923 word
= UICMP(z
, c
, <, sizeof _wordbuf
) ? _wordbuf
: n_autorec_alloc(c
+1);
924 memcpy(word
, arglist
[0], c
);
927 /* No-expansion modifier? */
928 if(!(flags
& a_NOPREFIX
) && *word
== '\\'){
934 /* It may be a modifier prefix */
935 if(c
== sizeof("ignerr") -1 && !asccasecmp(word
, "ignerr")){
936 flags
|= a_NOPREFIX
| a_IGNERR
;
939 }else if(c
== sizeof("wysh") -1 && !asccasecmp(word
, "wysh")){
940 flags
|= a_NOPREFIX
| a_WYSH
;
943 }else if(c
== sizeof("vput") -1 && !asccasecmp(word
, "vput")){
944 flags
|= a_NOPREFIX
| a_VPUT
;
949 /* Look up the command; if not found, bitch.
950 * Normally, a blank command would map to the first command in the
951 * table; while n_PS_SOURCING, however, we ignore blank lines to eliminate
952 * confusion; act just the same for aliases */
954 if((n_pstate
& n_PS_ROBOT
) || !(n_psonce
& n_PSO_INTERACTIVE
) ||
957 gcdp
= &a_go_cmd_tab
[0];
961 if(!(flags
& a_NOALIAS
) && (flags
& a_ALIAS_MASK
) != a_ALIAS_MASK
){
964 expcnt
= (flags
& a_ALIAS_MASK
);
966 flags
= (flags
& ~(a_ALIAS_MASK
| a_NOPREFIX
)) | expcnt
;
968 /* Avoid self-recursion; yes, the user could use \ no-expansion, but.. */
969 if(gap
!= NULL
&& !strcmp(word
, gap
->ga_name
)){
970 if(n_poption
& n_PO_D_V
)
971 n_err(_("Actively avoiding self-recursion of `commandalias': %s\n"),
973 }else for(gap
= a_go_aliases
; gap
!= NULL
; gap
= gap
->ga_next
)
974 if(!strcmp(word
, gap
->ga_name
)){
979 line
.s
= n_autorec_alloc(i
+ line
.l
+1);
980 memcpy(line
.s
, gap
->ga_cmd
.s
, i
);
981 memcpy(line
.s
+ i
, cp
, line
.l
);
982 line
.s
[i
+= line
.l
] = '\0';
985 line
.s
= gap
->ga_cmd
.s
;
986 line
.l
= gap
->ga_cmd
.l
;
992 if((gcdp
= a_go__firstfit(word
)) == NULL
|| gcdp
->gcd_func
== &c_cmdnotsupp
){
995 if(!(s
= n_cnd_if_isskip()) || (n_poption
& n_PO_D_V
))
996 n_err(_("Unknown command%s: `%s'\n"),
997 (s
? _(" (ignored due to `if' condition)") : n_empty
), word
);
1004 nerrn
= n_ERR_NOSYS
;
1008 /* See if we should execute the command -- if a conditional we always
1009 * execute it, otherwise, check the state of cond */
1011 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_F
) && n_cnd_if_isskip())
1014 nerrn
= n_ERR_INVAL
;
1016 /* Process the arguments to the command, depending on the type it expects */
1017 if((gcdp
->gcd_caflags
& n_CMD_ARG_I
) && !(n_psonce
& n_PSO_INTERACTIVE
) &&
1018 !(n_poption
& n_PO_BATCH_FLAG
)){
1019 n_err(_("May not execute `%s' unless interactive or in batch mode\n"),
1023 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_M
) && (n_psonce
& n_PSO_SENDMODE
)){
1024 n_err(_("May not execute `%s' while sending\n"), gcdp
->gcd_name
);
1027 if(gcdp
->gcd_caflags
& n_CMD_ARG_R
){
1028 if(n_pstate
& n_PS_COMPOSE_MODE
){
1029 /* TODO n_PS_COMPOSE_MODE: should allow `reply': ~:reply! */
1030 n_err(_("Cannot invoke `%s' when in compose mode\n"), gcdp
->gcd_name
);
1033 /* TODO Nothing should prevent n_CMD_ARG_R in conjunction with
1034 * TODO n_PS_ROBOT|_SOURCING; see a.._may_yield_control()! */
1035 if(n_pstate
& (n_PS_ROBOT
| n_PS_SOURCING
)){
1036 n_err(_("Cannot invoke `%s' from a macro or during file inclusion\n"),
1041 if((gcdp
->gcd_caflags
& n_CMD_ARG_S
) && !(n_psonce
& n_PSO_STARTED
)){
1042 n_err(_("May not execute `%s' during startup\n"), gcdp
->gcd_name
);
1045 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_X
) && (n_pstate
& n_PS_COMPOSE_FORKHOOK
)){
1046 n_err(_("Cannot invoke `%s' from a hook running in a child process\n"),
1051 if((gcdp
->gcd_caflags
& n_CMD_ARG_A
) && mb
.mb_type
== MB_VOID
){
1052 n_err(_("Cannot execute `%s' without active mailbox\n"), gcdp
->gcd_name
);
1055 if((gcdp
->gcd_caflags
& n_CMD_ARG_W
) && !(mb
.mb_perm
& MB_DELE
)){
1056 n_err(_("May not execute `%s' -- message file is read only\n"),
1061 if(gcdp
->gcd_caflags
& n_CMD_ARG_O
)
1062 n_OBSOLETE2(_("this command will be removed"), gcdp
->gcd_name
);
1064 /* TODO v15: strip n_PS_ARGLIST_MASK off, just in case the actual command
1065 * TODO doesn't use any of those list commands which strip this mask,
1066 * TODO and for now we misuse bits for checking relation to history;
1067 * TODO argument state should be property of a per-command carrier instead */
1068 n_pstate
&= ~n_PS_ARGLIST_MASK
;
1070 if((flags
& a_WYSH
) &&
1071 (gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
) != n_CMD_ARG_TYPE_WYRA
){
1072 n_err(_("`wysh' prefix does not affect `%s'\n"), gcdp
->gcd_name
);
1077 if(gcdp
->gcd_caflags
& n_CMD_ARG_V
){
1081 arglist
[0] = n_shexp_parse_token_cp((n_SHEXP_PARSE_TRIMSPACE
|
1082 n_SHEXP_PARSE_LOG
), &xcp
);
1083 line
.l
-= PTR2SIZE(xcp
- cp
);
1084 cp
= n_UNCONST(xcp
);
1086 xcp
= N_("could not parse input token");
1087 else if(!n_shexp_is_valid_varname(arglist
[0]))
1088 xcp
= N_("not a valid variable name");
1089 else if(!n_var_is_user_writable(arglist
[0]))
1090 xcp
= N_("either not a user writable, or a boolean variable");
1094 n_err("`%s': vput: %s: %s\n",
1095 gcdp
->gcd_name
, V_(xcp
), n_shexp_quote_cp(arglist
[0], FAL0
));
1096 nerrn
= n_ERR_NOTSUP
;
1100 n_pstate
|= n_PS_ARGMOD_VPUT
; /* TODO YET useless since stripped later
1101 * TODO on in getrawlist() etc., i.e., the argument vector producers,
1102 * TODO therefore yet needs to be set again based on flags&a_VPUT! */
1104 n_err(_("`vput' prefix does not affect `%s'\n"), gcdp
->gcd_name
);
1109 switch(gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
){
1110 case n_CMD_ARG_TYPE_MSGLIST
:
1111 /* Message list defaulting to nearest forward legal message */
1112 if(n_msgvec
== NULL
)
1114 if((c
= getmsglist(cp
, n_msgvec
, gcdp
->gcd_msgflag
)) < 0){
1115 nerrn
= n_ERR_NOMSG
;
1116 flags
|= a_NO_ERRNO
;
1120 if((n_msgvec
[0] = first(gcdp
->gcd_msgflag
, gcdp
->gcd_msgmask
)) != 0)
1123 if(n_msgvec
[0] == 0){
1125 if(!(n_pstate
& n_PS_HOOK_MASK
))
1126 fprintf(n_stdout
, _("No applicable messages\n"));
1127 nerrn
= n_ERR_NOMSG
;
1128 flags
|= a_NO_ERRNO
;
1131 rv
= (*gcdp
->gcd_func
)(n_msgvec
);
1134 case n_CMD_ARG_TYPE_NDMLIST
:
1135 /* Message list with no defaults, but no error if none exist */
1136 if(n_msgvec
== NULL
)
1138 if((c
= getmsglist(cp
, n_msgvec
, gcdp
->gcd_msgflag
)) < 0){
1139 nerrn
= n_ERR_NOMSG
;
1140 flags
|= a_NO_ERRNO
;
1143 rv
= (*gcdp
->gcd_func
)(n_msgvec
);
1146 case n_CMD_ARG_TYPE_STRING
:
1147 /* Just the straight string, old style, with leading blanks removed */
1148 while(spacechar(*cp
))
1150 rv
= (*gcdp
->gcd_func
)(cp
);
1152 case n_CMD_ARG_TYPE_RAWDAT
:
1153 /* Just the straight string, leading blanks removed, placed in argv[] */
1154 while(spacechar(*cp
))
1158 rv
= (*gcdp
->gcd_func
)(arglist_base
);
1161 case n_CMD_ARG_TYPE_WYSH
:
1165 case n_CMD_ARG_TYPE_WYRA
:
1166 c
= (flags
& a_WYSH
) ? 1 : 0;
1168 case n_CMD_ARG_TYPE_RAWLIST
:
1172 if((c
= getrawlist((c
!= 0), arglist
,
1173 n_MAXARGC
- PTR2SIZE(arglist
- arglist_base
),
1175 n_err(_("Invalid argument list\n"));
1176 flags
|= a_NO_ERRNO
;
1180 if(c
< gcdp
->gcd_minargs
){
1181 n_err(_("`%s' requires at least %u arg(s)\n"),
1182 gcdp
->gcd_name
, (ui32_t
)gcdp
->gcd_minargs
);
1183 flags
|= a_NO_ERRNO
;
1187 if(c
> gcdp
->gcd_maxargs
){
1188 n_err(_("`%s' takes no more than %u arg(s)\n"),
1189 gcdp
->gcd_name
, (ui32_t
)gcdp
->gcd_maxargs
);
1190 flags
|= a_NO_ERRNO
;
1196 n_pstate
|= n_PS_ARGMOD_VPUT
;
1198 rv
= (*gcdp
->gcd_func
)(arglist_base
);
1199 if(a_go_xcall
!= NULL
)
1204 DBG( n_panic(_("Implementation error: unknown argument type: %d"),
1205 gcdp
->gcd_caflags
& n_CMD_ARG_TYPE_MASK
); )
1206 nerrn
= n_ERR_NOTOBACCO
;
1211 if(!(gcdp
->gcd_caflags
& n_CMD_ARG_H
))
1212 gecp
->gec_add_history
= (((gcdp
->gcd_caflags
& n_CMD_ARG_G
) ||
1213 (n_pstate
& n_PS_MSGLIST_GABBY
)) ? TRUM1
: TRU1
);
1216 if(!(flags
& a_NO_ERRNO
)){
1217 if(gcdp
->gcd_caflags
& n_CMD_ARG_EM
)
1218 flags
|= a_NO_ERRNO
;
1219 else if((nerrn
= n_err_no
) == 0)
1220 nerrn
= n_ERR_INVAL
;
1222 flags
^= a_NO_ERRNO
;
1223 }else if(gcdp
->gcd_caflags
& n_CMD_ARG_EM
)
1224 flags
|= a_NO_ERRNO
;
1230 if(flags
& a_IGNERR
){
1231 n_pstate
&= ~n_PS_ERR_EXIT_MASK
;
1232 n_exit_status
= n_EXIT_OK
;
1236 if((bo
= ok_blook(batch_exit_on_error
))){
1237 n_OBSOLETE(_("please use *errexit*, not *batch-exit-on-error*"));
1238 if(!(n_poption
& n_PO_BATCH_FLAG
))
1241 if(ok_blook(errexit
) || bo
) /* TODO v15: drop bo */
1242 n_pstate
|= n_PS_ERR_QUIT
;
1243 else if(!(n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) &&
1245 n_pstate
|= n_PS_ERR_XIT
;
1250 if(n_exit_status
== n_EXIT_OK
)
1251 n_exit_status
= n_EXIT_ERR
;
1252 if((n_poption
& n_PO_D_V
) &&
1253 !(n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)))
1254 n_alert(_("Non-interactive, bailing out due to errors "
1255 "in startup load phase"));
1262 if((gcdp
->gcd_caflags
& n_CMD_ARG_P
) && ok_blook(autoprint
))
1264 n_go_input_inject(n_GO_INPUT_INJECT_COMMIT
, "\\type",
1265 sizeof("\\type") -1);
1267 if(!(n_pstate
& (n_PS_SOURCING
| n_PS_HOOK_MASK
)) &&
1268 !(gcdp
->gcd_caflags
& n_CMD_ARG_T
))
1269 n_pstate
|= n_PS_SAW_COMMAND
;
1273 if(!(flags
& a_NO_ERRNO
))
1274 n_pstate_err_no
= nerrn
;
1275 n_pstate_ex_no
= nexn
;
1280 static struct a_go_cmd_desc
const *
1281 a_go__firstfit(char const *comm
){ /* TODO *hashtable*! linear list search!!! */
1282 struct a_go_cmd_desc
const *gcdp
;
1285 for(gcdp
= a_go_cmd_tab
; gcdp
< &a_go_cmd_tab
[n_NELEM(a_go_cmd_tab
)]; ++gcdp
)
1286 if(*comm
== *gcdp
->gcd_name
&& is_prefix(comm
, gcdp
->gcd_name
))
1296 NYD_X
; /* Signal handler */
1298 /* nothing to do? */
1303 a_go_onintr(int s
){ /* TODO block signals while acting */
1304 NYD_X
; /* Signal handler */
1307 safe_signal(SIGINT
, a_go_onintr
);
1309 termios_state_reset();
1311 a_go_cleanup(a_GO_CLEANUP_UNWIND
| /* XXX FAKE */a_GO_CLEANUP_HOLDALLSIGS
);
1314 n_err_sighdl(_("Interrupt\n"));
1315 safe_signal(SIGPIPE
, a_go_oldpipe
);
1316 siglongjmp(a_go_srbuf
, 0); /* FIXME get rid */
1320 a_go_cleanup(enum a_go_cleanup_mode gcm
){
1321 /* Signals blocked */
1322 struct a_go_ctx
*gcp
;
1325 if(!(gcm
& a_GO_CLEANUP_HOLDALLSIGS
))
1330 /* Free input injections of this level first */
1331 if(!(gcm
& a_GO_CLEANUP_LOOPTICK
)){
1332 struct a_go_input_inject
**giipp
, *giip
;
1334 for(giipp
= &gcp
->gc_inject
; (giip
= *giipp
) != NULL
;){
1335 *giipp
= giip
->gii_next
;
1340 /* Cleanup non-crucial external stuff */
1342 if(gcp
->gc_data
.gdc_colour
!= NULL
)
1343 n_colour_stack_del(NULL
);
1346 /* Work the actual context (according to cleanup mode) */
1347 if(gcp
->gc_outer
== NULL
){
1348 if(gcm
& (a_GO_CLEANUP_UNWIND
| a_GO_CLEANUP_SIGINT
)){
1350 gcp
->gc_flags
&= ~a_GO_XCALL_LOOP_MASK
;
1351 n_pstate
&= ~n_PS_ERR_EXIT_MASK
;
1354 if(!(n_pstate
& n_PS_SOURCING
))
1360 n_pstate
&= ~(n_PS_SOURCING
| n_PS_ROBOT
);
1361 assert(a_go_xcall
== NULL
);
1362 assert(!(gcp
->gc_flags
& a_GO_XCALL_LOOP_MASK
));
1363 assert(gcp
->gc_on_finalize
== NULL
);
1364 assert(gcp
->gc_data
.gdc_colour
== NULL
);
1366 }else if(gcm
& a_GO_CLEANUP_LOOPTICK
){
1369 }else if(gcp
->gc_flags
& a_GO_SPLICE
){ /* TODO Temporary hack */
1370 n_stdin
= gcp
->gc_splice_stdin
;
1371 n_stdout
= gcp
->gc_splice_stdout
;
1372 n_psonce
= gcp
->gc_splice_psonce
;
1376 /* Cleanup crucial external stuff */
1377 if(gcp
->gc_data
.gdc_ifcond
!= NULL
){
1378 n_cnd_if_stack_del(gcp
->gc_data
.gdc_ifcond
);
1379 if(!(gcp
->gc_flags
& a_GO_FORCE_EOF
) &&
1380 !(gcm
& (a_GO_CLEANUP_ERROR
| a_GO_CLEANUP_SIGINT
)) &&
1382 n_err(_("Unmatched `if' at end of %s %s\n"),
1383 ((gcp
->gc_flags
& a_GO_MACRO
1384 ? (gcp
->gc_flags
& a_GO_MACRO_CMD
? _("command") : _("macro"))
1385 : _("`source'd file"))),
1387 gcm
|= a_GO_CLEANUP_ERROR
;
1390 /* Teardown context */
1391 if(gcp
->gc_flags
& a_GO_MACRO
){
1392 if(gcp
->gc_flags
& a_GO_MACRO_FREE_DATA
){
1395 while(*(lp
= &gcp
->gc_lines
[gcp
->gc_loff
]) != NULL
){
1399 /* Part of gcp's memory chunk, then */
1400 if(!(gcp
->gc_flags
& a_GO_MACRO_CMD
))
1401 n_free(gcp
->gc_lines
);
1403 }else if(gcp
->gc_flags
& a_GO_PIPE
)
1404 /* XXX command manager should -TERM then -KILL instead of hoping
1405 * XXX for exit of provider due to n_ERR_PIPE / SIGPIPE */
1406 Pclose(gcp
->gc_file
, TRU1
);
1407 else if(gcp
->gc_flags
& a_GO_FILE
)
1408 Fclose(gcp
->gc_file
);
1410 if(!(gcp
->gc_flags
& a_GO_MEMPOOL_INHERITED
)){
1411 if(gcp
->gc_data
.gdc_mempool
!= NULL
)
1412 n_memory_pool_pop(NULL
);
1417 n_go_data
= &(a_go_ctx
= gcp
->gc_outer
)->gc_data
;
1418 if((a_go_ctx
->gc_flags
& (a_GO_MACRO
| a_GO_SUPER_MACRO
)) ==
1419 (a_GO_MACRO
| a_GO_SUPER_MACRO
)){
1420 n_pstate
&= ~n_PS_SOURCING
;
1421 assert(n_pstate
& n_PS_ROBOT
);
1422 }else if(!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
))
1423 n_pstate
&= ~(n_PS_SOURCING
| n_PS_ROBOT
);
1425 assert(n_pstate
& n_PS_ROBOT
);
1427 if(gcp
->gc_on_finalize
!= NULL
)
1428 (*gcp
->gc_on_finalize
)(gcp
->gc_finalize_arg
);
1430 if(gcm
& a_GO_CLEANUP_ERROR
){
1431 if(a_go_ctx
->gc_flags
& a_GO_XCALL_LOOP
)
1432 a_go_ctx
->gc_flags
|= a_GO_XCALL_LOOP_ERROR
;
1436 if(gcp
->gc_flags
& a_GO_FREE
)
1439 if(n_UNLIKELY((gcm
& a_GO_CLEANUP_UNWIND
) && gcp
!= a_go_ctx
))
1444 if(!(gcm
& a_GO_CLEANUP_HOLDALLSIGS
))
1449 /* With *posix* we follow what POSIX says:
1450 * Any errors in the start-up file shall either cause mailx to
1451 * terminate with a diagnostic message and a non-zero status or to
1452 * continue after writing a diagnostic message, ignoring the
1453 * remainder of the lines in the start-up file
1454 * Print the diagnostic only for the outermost resource unless the user
1455 * is debugging or in verbose mode */
1456 if((n_poption
& n_PO_D_V
) ||
1457 (!(n_psonce
& n_PSO_STARTED
) &&
1458 !(gcp
->gc_flags
& (a_GO_SPLICE
| a_GO_MACRO
)) &&
1459 !(gcp
->gc_outer
->gc_flags
& a_GO_TYPE_MASK
)))
1460 /* I18N: file inclusion, macro etc. evaluation has been stopped */
1461 n_alert(_("Stopped %s %s due to errors%s"),
1462 (n_psonce
& n_PSO_STARTED
1463 ? (gcp
->gc_flags
& a_GO_SPLICE
? _("spliced in program")
1464 : (gcp
->gc_flags
& a_GO_MACRO
1465 ? (gcp
->gc_flags
& a_GO_MACRO_CMD
1466 ? _("evaluating command") : _("evaluating macro"))
1467 : (gcp
->gc_flags
& a_GO_PIPE
1468 ? _("executing `source'd pipe")
1469 : (gcp
->gc_flags
& a_GO_FILE
1470 ? _("loading `source'd file") : _(a_GO_MAINCTX_NAME
))))
1472 : (gcp
->gc_flags
& a_GO_MACRO
1473 ? (gcp
->gc_flags
& a_GO_MACRO_X_OPTION
1474 ? _("evaluating command line") : _("evaluating macro"))
1475 : _("loading initialization resource"))),
1477 (n_poption
& n_PO_DEBUG
? n_empty
: _(" (enable *debug* for trace)")));
1482 a_go_file(char const *file
, bool_t silent_open_error
){
1483 struct a_go_ctx
*gcp
;
1493 /* Being a command argument file is space-trimmed *//* TODO v15 with
1494 * TODO WYRALIST this is no longer necessary true, and for that we
1495 * TODO don't set _PARSE_TRIMSPACE because we cannot! -> cmd-tab.h!! */
1497 ((ispipe
= (!silent_open_error
&& (nlen
= strlen(file
)) > 0 &&
1498 file
[--nlen
] == '|')))
1501 if(!silent_open_error
){
1502 for(nlen
= strlen(file
); nlen
> 0;){
1508 nbuf
= savestrbuf(file
, nlen
);
1518 if((fip
= Popen(nbuf
/* #if 0 above = savestrbuf(file, nlen)*/, "r",
1519 ok_vlook(SHELL
), NULL
, n_CHILD_FD_NULL
)) == NULL
)
1521 }else if((nbuf
= fexpand(file
, FEXP_LOCAL
)) == NULL
)
1523 else if((fip
= Fopen(nbuf
, "r")) == NULL
){
1525 if(!silent_open_error
|| (n_poption
& n_PO_D_V
))
1527 if(silent_open_error
)
1532 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
1534 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
1535 (nlen
= strlen(nbuf
) +1));
1536 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
1540 gcp
->gc_outer
= a_go_ctx
;
1541 gcp
->gc_osigmask
= osigmask
;
1543 gcp
->gc_flags
= (ispipe
? a_GO_FREE
| a_GO_PIPE
: a_GO_FREE
| a_GO_FILE
) |
1544 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
? a_GO_SUPER_MACRO
: 0);
1545 memcpy(gcp
->gc_name
, nbuf
, nlen
);
1548 n_go_data
= &gcp
->gc_data
;
1549 n_pstate
|= n_PS_SOURCING
| n_PS_ROBOT
;
1550 if(!a_go_event_loop(gcp
, n_GO_INPUT_NONE
| n_GO_INPUT_NL_ESC
))
1554 return (fip
!= NULL
);
1558 a_go_load(struct a_go_ctx
*gcp
){
1561 assert(!(n_psonce
& n_PSO_STARTED
));
1562 assert(!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
));
1564 gcp
->gc_flags
|= a_GO_MEMPOOL_INHERITED
;
1565 gcp
->gc_data
.gdc_mempool
= n_go_data
->gdc_mempool
;
1570 * Any errors in the start-up file shall either cause mailx to terminate
1571 * with a diagnostic message and a non-zero status or to continue after
1572 * writing a diagnostic message, ignoring the remainder of the lines in
1573 * the start-up file. */
1574 gcp
->gc_outer
= a_go_ctx
;
1576 n_go_data
= &gcp
->gc_data
;
1577 /* FIXME won't work for now (n_PS_ROBOT needs n_PS_SOURCING sofar)
1578 n_pstate |= n_PS_ROBOT |
1579 (gcp->gc_flags & a_GO_MACRO_X_OPTION ? 0 : n_PS_SOURCING);
1581 n_pstate
|= n_PS_ROBOT
| n_PS_SOURCING
;
1587 return (((n_psonce
& n_PSO_EXIT_MASK
) |
1588 (n_pstate
& n_PS_ERR_EXIT_MASK
)) == 0);
1592 a_go__eloopint(int sig
){ /* TODO one day, we don't need it no more */
1593 NYD_X
; /* Signal handler */
1595 siglongjmp(a_go_ctx
->gc_eloop_jmp
, 1);
1599 a_go_event_loop(struct a_go_ctx
*gcp
, enum n_go_input_flags gif
){
1600 sighandler_type soldhdl
;
1601 struct a_go_eval_ctx gec
;
1602 enum {a_RETOK
= TRU1
, a_TICKED
= 1<<1} volatile f
;
1603 volatile int hadint
; /* TODO get rid of shitty signal stuff (see signal.c) */
1607 memset(&gec
, 0, sizeof gec
);
1608 osigmask
= gcp
->gc_osigmask
;
1612 if((soldhdl
= safe_signal(SIGINT
, SIG_IGN
)) != SIG_IGN
){
1613 safe_signal(SIGINT
, &a_go__eloopint
);
1614 if(sigsetjmp(gcp
->gc_eloop_jmp
, 1)){
1619 gcp
->gc_flags
&= ~a_GO_XCALL_LOOP_MASK
;
1624 for(;; f
|= a_TICKED
){
1630 /* Read a line of commands and handle end of file specially */
1631 gec
.gec_line
.l
= gec
.gec_line_size
;
1633 n
= n_go_input(gif
, NULL
, &gec
.gec_line
.s
, &gec
.gec_line
.l
, NULL
);
1635 gec
.gec_line_size
= (ui32_t
)gec
.gec_line
.l
;
1636 gec
.gec_line
.l
= (ui32_t
)n
;
1642 if(!a_go_evaluate(&gec
))
1646 if(!(f
& a_RETOK
) || a_go_xcall
!= NULL
||
1647 (n_psonce
& n_PSO_EXIT_MASK
) || (n_pstate
& n_PS_ERR_EXIT_MASK
))
1651 jjump
: /* TODO Should be _CLEANUP_UNWIND not _TEARDOWN on signal if DOABLE! */
1652 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
|
1653 (f
& a_RETOK
? 0 : a_GO_CLEANUP_ERROR
) |
1654 (hadint
? a_GO_CLEANUP_SIGINT
: 0) | a_GO_CLEANUP_HOLDALLSIGS
);
1656 if(gec
.gec_line
.s
!= NULL
)
1657 n_free(gec
.gec_line
.s
);
1659 if(soldhdl
!= SIG_IGN
)
1660 safe_signal(SIGINT
, soldhdl
);
1664 sigprocmask(SIG_SETMASK
, &osigmask
, NULL
);
1667 return (f
& a_RETOK
);
1671 a_go_c_read(void *v
){ /* TODO IFS? how? -r */
1673 char const **argv
, *cp
, *cp2
;
1684 n_SIGMAN_ENTER_SWITCH(&sm
, n_SIGMAN_ALL
){
1688 n_pstate_err_no
= n_ERR_INTR
;
1692 rv
= n_go_input(((n_pstate
& n_PS_COMPOSE_MODE
1693 ? n_GO_INPUT_CTX_COMPOSE
: n_GO_INPUT_CTX_DEFAULT
) |
1694 n_GO_INPUT_FORCE_STDIN
| n_GO_INPUT_NL_ESC
|
1695 n_GO_INPUT_PROMPT_NONE
/* XXX POSIX: PS2: yes! */),
1696 NULL
, &linebuf
, &linesize
, NULL
);
1697 n_pstate_err_no
= n_ERR_NONE
; /* TODO I/O error if rv<0! */
1704 for(rv
= 0; *argv
!= NULL
; ++argv
){
1707 while(spacechar(*cp
))
1712 /* The last variable gets the remaining line less trailing IFS */
1713 if(argv
[1] == NULL
){
1714 for(cp2
= cp
; *cp2
!= '\0'; ++cp2
)
1716 for(; cp2
> cp
; --cp2
){
1722 for(cp2
= cp
; (c
= *++cp2
) != '\0';)
1726 /* C99 xxx This is a CC warning workaround (-Wbad-function-cast) */{
1729 vcp
= savestrbuf(cp
, PTR2SIZE(cp2
- cp
));
1730 if(!a_go__read_set(*argv
, vcp
)){
1731 n_pstate_err_no
= n_ERR_NOTSUP
;
1741 /* Set the remains to the empty string */
1742 for(; *argv
!= NULL
; ++argv
)
1743 if(!a_go__read_set(*argv
, n_empty
)){
1744 n_pstate_err_no
= n_ERR_NOTSUP
;
1749 n_sigman_cleanup_ping(&sm
);
1754 n_sigman_leave(&sm
, n_SIGMAN_VIPSIGS_NTTYOUT
);
1759 a_go__read_set(char const *cp
, char const *value
){
1763 if(!n_shexp_is_valid_varname(cp
))
1764 value
= N_("not a valid variable name");
1765 else if(!n_var_is_user_writable(cp
))
1766 value
= N_("variable is read-only");
1767 else if(!n_var_vset(cp
, (uintptr_t)value
))
1768 value
= N_("failed to update variable value");
1773 n_err("`read': %s: %s\n", V_(value
), n_shexp_quote_cp(cp
, FAL0
));
1781 c_cmdnotsupp(void *vp
){
1784 n_err(_("The requested feature is not compiled in\n"));
1791 struct a_go_ctx
*gcp
;
1794 assert(n_stdin
!= NULL
);
1796 gcp
= (void*)a_go__mainctx_b
.uf
;
1797 DBGOR( memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
)),
1798 memset(&gcp
->gc_data
, 0, sizeof gcp
->gc_data
) );
1799 gcp
->gc_file
= n_stdin
;
1800 memcpy(gcp
->gc_name
, a_GO_MAINCTX_NAME
, sizeof(a_GO_MAINCTX_NAME
));
1802 n_go_data
= &gcp
->gc_data
;
1804 n_child_manager_start();
1809 n_go_main_loop(void){ /* FIXME */
1810 struct a_go_eval_ctx gec
;
1817 if (!(n_pstate
& n_PS_SOURCING
)) {
1818 if (safe_signal(SIGINT
, SIG_IGN
) != SIG_IGN
)
1819 safe_signal(SIGINT
, &a_go_onintr
);
1820 if (safe_signal(SIGHUP
, SIG_IGN
) != SIG_IGN
)
1821 safe_signal(SIGHUP
, &a_go_hangup
);
1823 a_go_oldpipe
= safe_signal(SIGPIPE
, SIG_IGN
);
1824 safe_signal(SIGPIPE
, a_go_oldpipe
);
1826 memset(&gec
, 0, sizeof gec
);
1828 (void)sigsetjmp(a_go_srbuf
, 1); /* FIXME get rid */
1831 for (eofcnt
= 0;; gec
.gec_ever_seen
= TRU1
) {
1834 if(gec
.gec_ever_seen
)
1835 a_go_cleanup(a_GO_CLEANUP_LOOPTICK
| a_GO_CLEANUP_HOLDALLSIGS
);
1837 if (!(n_pstate
& n_PS_SOURCING
)) {
1840 /* TODO Note: this buffer may contain a password. We should redefine
1841 * TODO the code flow which has to do that */
1842 if ((cp
= termios_state
.ts_linebuf
) != NULL
) {
1843 termios_state
.ts_linebuf
= NULL
;
1844 termios_state
.ts_linesize
= 0;
1845 n_free(cp
); /* TODO pool give-back */
1847 if (gec
.gec_line
.l
> LINESIZE
* 3) {
1848 n_free(gec
.gec_line
.s
);
1849 gec
.gec_line
.s
= NULL
;
1850 gec
.gec_line
.l
= gec
.gec_line_size
= 0;
1854 if (!(n_pstate
& n_PS_SOURCING
) && (n_psonce
& n_PSO_INTERACTIVE
)) {
1857 if ((cp
= ok_vlook(newmail
)) != NULL
) {
1860 /* FIXME TEST WITH NOPOLL ETC. !!! */
1861 n
= (cp
!= NULL
&& strcmp(cp
, "nopoll"));
1862 if ((mb
.mb_type
== MB_FILE
&& !stat(mailname
, &st
) &&
1863 st
.st_size
> mailsize
) ||
1864 (mb
.mb_type
== MB_MAILDIR
&& n
!= 0)) {
1865 size_t odot
= PTR2SIZE(dot
- message
);
1866 ui32_t odid
= (n_pstate
& n_PS_DID_PRINT_DOT
);
1870 i
= setfile(mailname
,
1872 ((mb
.mb_perm
& MB_DELE
) ? 0 : FEDIT_RDONLY
));
1875 n_exit_status
|= n_EXIT_ERR
;
1879 dot
= &message
[odot
];
1884 n_exit_status
= n_EXIT_OK
;
1887 /* Read a line of commands and handle end of file specially */
1888 gec
.gec_line
.l
= gec
.gec_line_size
;
1890 n
= n_go_input(n_GO_INPUT_CTX_DEFAULT
| n_GO_INPUT_NL_ESC
, NULL
,
1891 &gec
.gec_line
.s
, &gec
.gec_line
.l
, NULL
);
1893 gec
.gec_line_size
= (ui32_t
)gec
.gec_line
.l
;
1894 gec
.gec_line
.l
= (ui32_t
)n
;
1897 if (!(n_pstate
& n_PS_ROBOT
) &&
1898 (n_psonce
& n_PSO_INTERACTIVE
) && ok_blook(ignoreeof
) &&
1900 fprintf(n_stdout
, _("*ignoreeof* set, use `quit' to quit.\n"));
1901 n_go_input_clearerr();
1907 n_pstate
&= ~n_PS_HOOK_MASK
;
1909 rv
= a_go_evaluate(&gec
);
1912 if(!(n_pstate
& n_PS_SOURCING
) && (n_psonce
& n_PSO_INTERACTIVE
) &&
1913 gec
.gec_add_history
)
1914 n_tty_addhist(gec
.gec_line
.s
, (gec
.gec_add_history
!= TRU1
));
1916 switch(n_pstate
& n_PS_ERR_EXIT_MASK
){
1917 case n_PS_ERR_XIT
: n_psonce
|= n_PSO_XIT
; break;
1918 case n_PS_ERR_QUIT
: n_psonce
|= n_PSO_QUIT
; break;
1921 if(n_psonce
& n_PSO_EXIT_MASK
)
1928 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
| a_GO_CLEANUP_HOLDALLSIGS
|
1929 (rv
? 0 : a_GO_CLEANUP_ERROR
));
1931 if (gec
.gec_line
.s
!= NULL
)
1932 n_free(gec
.gec_line
.s
);
1940 n_go_input_clearerr(void){
1946 if(!(a_go_ctx
->gc_flags
& (a_GO_FORCE_EOF
|
1947 a_GO_PIPE
| a_GO_MACRO
| a_GO_SPLICE
)))
1948 fp
= a_go_ctx
->gc_file
;
1956 n_go_input_force_eof(void){
1958 a_go_ctx
->gc_flags
|= a_GO_FORCE_EOF
;
1963 n_go_input_inject(enum n_go_input_inject_flags giif
, char const *buf
,
1969 if(UIZ_MAX
- n_VSTRUCT_SIZEOF(struct a_go_input_inject
, gii_dat
) -1 > len
&&
1972 struct a_go_input_inject
*giip
, **giipp
;
1976 giip
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_input_inject
, gii_dat
1978 giipp
= &a_go_ctx
->gc_inject
;
1979 giip
->gii_next
= *giipp
;
1980 giip
->gii_commit
= ((giif
& n_GO_INPUT_INJECT_COMMIT
) != 0);
1981 if(buf
[i
= 0] != ' ' && !(giif
& n_GO_INPUT_INJECT_HISTORY
))
1982 giip
->gii_dat
[i
++] = ' '; /* TODO prim. hack to avoid history put! */
1983 memcpy(&giip
->gii_dat
[i
], buf
, len
);
1985 giip
->gii_dat
[giip
->gii_len
= i
] = '\0';
1994 (n_go_input
)(enum n_go_input_flags gif
, char const *prompt
, char **linebuf
,
1995 size_t *linesize
, char const *string n_MEMORY_DEBUG_ARGS
){
1996 /* TODO readline: linebuf pool!; n_go_input should return si64_t */
1997 struct n_string xprompt
;
1999 bool_t doprompt
, dotty
;
2004 if(!(gif
& n_GO_INPUT_HOLDALLSIGS
))
2007 if(a_go_ctx
->gc_flags
& a_GO_FORCE_EOF
){
2012 if(gif
& n_GO_INPUT_FORCE_STDIN
)
2015 /* Special case macro mode: never need to prompt, lines have always been
2016 * unfolded already */
2017 if(a_go_ctx
->gc_flags
& a_GO_MACRO
){
2018 struct a_go_input_inject
*giip
;
2020 if(*linebuf
!= NULL
)
2023 /* Injection in progress? Don't care about the autocommit state here */
2024 if((giip
= a_go_ctx
->gc_inject
) != NULL
){
2025 a_go_ctx
->gc_inject
= giip
->gii_next
;
2027 *linesize
= giip
->gii_len
;
2028 *linebuf
= (char*)giip
;
2029 memmove(*linebuf
, giip
->gii_dat
, giip
->gii_len
+1);
2030 iftype
= "INJECTION";
2032 if((*linebuf
= a_go_ctx
->gc_lines
[a_go_ctx
->gc_loff
]) == NULL
){
2038 ++a_go_ctx
->gc_loff
;
2039 *linesize
= strlen(*linebuf
);
2040 if(!(a_go_ctx
->gc_flags
& a_GO_MACRO_FREE_DATA
))
2041 *linebuf
= sbufdup(*linebuf
, *linesize
);
2043 iftype
= (a_go_ctx
->gc_flags
& a_GO_MACRO_X_OPTION
)
2045 : (a_go_ctx
->gc_flags
& a_GO_MACRO_CMD
) ? "CMD" : "MACRO";
2048 n_pstate
|= n_PS_READLINE_NL
;
2051 /* Injection in progress? */
2052 struct a_go_input_inject
**giipp
, *giip
;
2054 giipp
= &a_go_ctx
->gc_inject
;
2056 if((giip
= *giipp
) != NULL
){
2057 *giipp
= giip
->gii_next
;
2059 if(giip
->gii_commit
){
2060 if(*linebuf
!= NULL
)
2063 /* Simply reuse the buffer */
2064 n
= (int)(*linesize
= giip
->gii_len
);
2065 *linebuf
= (char*)giip
;
2066 memmove(*linebuf
, giip
->gii_dat
, giip
->gii_len
+1);
2067 iftype
= "INJECTION";
2068 n_pstate
|= n_PS_READLINE_NL
;
2071 string
= savestrbuf(giip
->gii_dat
, giip
->gii_len
);
2078 n_pstate
&= ~n_PS_READLINE_NL
;
2079 iftype
= (!(n_psonce
& n_PSO_STARTED
) ? "LOAD"
2080 : (n_pstate
& n_PS_SOURCING
) ? "SOURCE" : "READ");
2081 doprompt
= ((n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) ==
2082 (n_PSO_INTERACTIVE
| n_PSO_STARTED
) && !(n_pstate
& n_PS_ROBOT
));
2083 dotty
= (doprompt
&& !ok_blook(line_editor_disable
));
2085 gif
|= n_GO_INPUT_PROMPT_NONE
;
2088 n_string_creat_auto(&xprompt
);
2090 gif
|= n_GO_INPUT_PROMPT_EVAL
;
2093 /* Ensure stdout is flushed first anyway (partial lines, maybe?) */
2094 if(!dotty
&& (gif
& n_GO_INPUT_PROMPT_NONE
))
2097 ifile
= (gif
& n_GO_INPUT_FORCE_STDIN
) ? n_stdin
: a_go_ctx
->gc_file
;
2099 assert((n_pstate
& n_PS_COMPOSE_FORKHOOK
) &&
2100 (a_go_ctx
->gc_flags
& a_GO_MACRO
));
2104 for(nold
= n
= 0;;){
2106 assert(ifile
== n_stdin
);
2107 if(string
!= NULL
&& (n
= (int)strlen(string
)) > 0){
2111 *linesize
= (size_t)n
+ LINESIZE
+1;
2112 *linebuf
= (n_realloc
)(*linebuf
, *linesize n_MEMORY_DEBUG_ARGSCALL
);
2113 memcpy(*linebuf
, string
, (size_t)n
+1);
2119 n
= (n_tty_readline
)(gif
, prompt
, linebuf
, linesize
, n
2120 n_MEMORY_DEBUG_ARGSCALL
);
2124 if(!(gif
& n_GO_INPUT_PROMPT_NONE
))
2125 n_tty_create_prompt(&xprompt
, prompt
, gif
);
2129 if(!(gif
& n_GO_INPUT_PROMPT_NONE
) && xprompt
.s_len
> 0){
2130 fwrite(xprompt
.s_dat
, 1, xprompt
.s_len
, n_stdout
);
2134 n
= (readline_restart
)(ifile
, linebuf
, linesize
, n
2135 n_MEMORY_DEBUG_ARGSCALL
);
2139 if(n
> 0 && nold
> 0){
2144 cp
= &(*linebuf
)[nold
];
2145 while(spacechar(*cp
) && n
- i
>= nold
)
2148 memmove(&(*linebuf
)[nold
], cp
, n
- nold
- i
);
2150 (*linebuf
)[n
] = '\0';
2159 * An unquoted <backslash> at the end of a command line shall
2160 * be discarded and the next line shall continue the command */
2161 if(!(gif
& n_GO_INPUT_NL_ESC
) || (*linebuf
)[n
- 1] != '\\'){
2163 n_pstate
|= n_PS_READLINE_NL
;
2166 /* Definitely outside of quotes, thus the quoting rules are so that an
2167 * uneven number of successive reverse solidus at EOL is a continuation */
2171 for(j
= 1, i
= (size_t)n
- 1; i
-- > 0; ++j
)
2172 if((*linebuf
)[i
] != '\\')
2177 (*linebuf
)[nold
= --n
] = '\0';
2178 gif
|= n_GO_INPUT_NL_FOLLOW
;
2183 (*linebuf
)[*linesize
= n
] = '\0';
2187 if(gif
& n_GO_INPUT_DROP_TRAIL_SPC
){
2191 for(cp
= &(*linebuf
)[i
= (size_t)n
];; --i
){
2196 (*linebuf
)[n
= (int)i
] = '\0';
2199 if(gif
& n_GO_INPUT_DROP_LEAD_SPC
){
2203 for(cp
= &(*linebuf
)[0], j
= (size_t)n
, i
= 0; i
< j
; ++i
){
2209 memmove(&(*linebuf
)[0], &(*linebuf
)[i
], j
-= i
);
2210 (*linebuf
)[n
= (int)j
] = '\0';
2213 #endif /* 0 (notyet - must take care for reverse solidus escaped space) */
2215 if(n_poption
& n_PO_D_VV
)
2216 n_err(_("%s %d bytes <%s>\n"), iftype
, n
, *linebuf
);
2218 if (n_pstate
& n_PS_PSTATE_PENDMASK
)
2219 a_go_update_pstate();
2221 /* TODO We need to special case a_GO_SPLICE, since that is not managed by us
2222 * TODO but only established from the outside and we need to drop this
2223 * TODO overlay context somehow */
2224 if(n
< 0 && (a_go_ctx
->gc_flags
& a_GO_SPLICE
))
2225 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
| a_GO_CLEANUP_HOLDALLSIGS
);
2227 if(!(gif
& n_GO_INPUT_HOLDALLSIGS
))
2234 n_go_input_cp(enum n_go_input_flags gif
, char const *prompt
,
2235 char const *string
){
2238 char *linebuf
, * volatile rv
;
2246 n_SIGMAN_ENTER_SWITCH(&sm
, n_SIGMAN_ALL
){
2253 n
= n_go_input(gif
, prompt
, &linebuf
, &linesize
, string
);
2254 if(n
> 0 && *(rv
= savestrbuf(linebuf
, (size_t)n
)) != '\0' &&
2255 (gif
& n_GO_INPUT_HIST_ADD
) && (n_psonce
& n_PSO_INTERACTIVE
))
2256 n_tty_addhist(rv
, ((gif
& n_GO_INPUT_HIST_GABBY
) != 0));
2258 n_sigman_cleanup_ping(&sm
);
2263 n_sigman_leave(&sm
, n_SIGMAN_VIPSIGS_NTTYOUT
);
2268 n_go_load(char const *name
){
2269 struct a_go_ctx
*gcp
;
2277 if(name
== NULL
|| *name
== '\0')
2279 else if((fip
= Fopen(name
, "r")) == NULL
){
2280 if(n_poption
& n_PO_D_V
)
2281 n_err(_("No such file to load: %s\n"), n_shexp_quote_cp(name
, FAL0
));
2285 i
= strlen(name
) +1;
2286 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) + i
);
2287 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2290 gcp
->gc_flags
= a_GO_FREE
| a_GO_FILE
;
2291 memcpy(gcp
->gc_name
, name
, i
);
2293 if(n_poption
& n_PO_D_V
)
2294 n_err(_("Loading %s\n"), n_shexp_quote_cp(gcp
->gc_name
, FAL0
));
2295 rv
= a_go_load(gcp
);
2302 n_go_Xargs(char const **lines
, size_t cnt
){
2303 static char const name
[] = "-X";
2308 char uf
[n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) + sizeof(name
)];
2310 char const *srcp
, *xsrcp
;
2312 size_t imax
, i
, len
;
2313 struct a_go_ctx
*gcp
;
2317 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2319 gcp
->gc_flags
= a_GO_MACRO
| a_GO_MACRO_X_OPTION
|
2320 a_GO_SUPER_MACRO
| a_GO_MACRO_FREE_DATA
;
2321 memcpy(gcp
->gc_name
, name
, sizeof name
);
2323 /* The problem being that we want to support reverse solidus newline
2324 * escaping also within multiline -X, i.e., POSIX says:
2325 * An unquoted <backslash> at the end of a command line shall
2326 * be discarded and the next line shall continue the command
2327 * Therefore instead of "gcp->gc_lines = n_UNCONST(lines)", duplicate the
2328 * entire lines array and set _MACRO_FREE_DATA */
2330 gcp
->gc_lines
= n_alloc(sizeof(*gcp
->gc_lines
) * imax
);
2332 /* For each of the input lines.. */
2333 for(i
= len
= 0, cp
= NULL
; cnt
> 0;){
2337 if((j
= strlen(srcp
= *lines
)) == 0){
2342 /* Separate one line from a possible multiline input string */
2343 if((xsrcp
= memchr(srcp
, '\n', j
)) != NULL
){
2345 j
= PTR2SIZE(xsrcp
- srcp
);
2349 /* The (separated) string may itself indicate soft newline escaping */
2350 if((keep
= (srcp
[j
- 1] == '\\'))){
2353 /* Need an uneven number of reverse solidus */
2354 for(xk
= 1, xj
= j
- 1; xj
-- > 0; ++xk
)
2355 if(srcp
[xj
] != '\\')
2363 /* Strip any leading WS from follow lines, then */
2365 while(j
> 0 && spacechar(*srcp
))
2369 if(i
+ 2 >= imax
){ /* TODO need a vector (main.c, here, ++) */
2371 gcp
->gc_lines
= n_realloc(gcp
->gc_lines
, sizeof(*gcp
->gc_lines
) *
2374 gcp
->gc_lines
[i
] = cp
= n_realloc(cp
, len
+ j
+1);
2375 memcpy(&cp
[len
], srcp
, j
);
2376 cp
[len
+= j
] = '\0';
2385 assert(i
+ 1 < imax
);
2386 gcp
->gc_lines
[i
++] = cp
;
2388 gcp
->gc_lines
[i
] = NULL
;
2390 b
.rv
= a_go_load(gcp
);
2400 rv
= (a_go_file(*(char**)v
, FAL0
) == TRU1
) ? 0 : 1;
2406 c_source_if(void *v
){ /* XXX obsolete?, support file tests in `if' etc.! */
2410 rv
= (a_go_file(*(char**)v
, TRU1
) == TRU1
) ? 0 : 1;
2416 n_go_macro(enum n_go_input_flags gif
, char const *name
, char **lines
,
2417 void (*on_finalize
)(void*), void *finalize_arg
){
2418 struct a_go_ctx
*gcp
;
2424 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2426 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2427 (i
= strlen(name
) +1));
2428 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2432 gcp
->gc_outer
= a_go_ctx
;
2433 gcp
->gc_osigmask
= osigmask
;
2434 gcp
->gc_flags
= a_GO_FREE
| a_GO_MACRO
| a_GO_MACRO_FREE_DATA
|
2435 ((!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
) ||
2436 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
)) ? a_GO_SUPER_MACRO
: 0);
2437 gcp
->gc_lines
= lines
;
2438 gcp
->gc_on_finalize
= on_finalize
;
2439 gcp
->gc_finalize_arg
= finalize_arg
;
2440 memcpy(gcp
->gc_name
, name
, i
);
2443 n_go_data
= &gcp
->gc_data
;
2444 n_pstate
|= n_PS_ROBOT
;
2445 rv
= a_go_event_loop(gcp
, gif
);
2447 /* Shall this enter a `xcall' stack avoidance optimization (loop)? */
2448 if(a_go_xcall
!= NULL
){
2449 if(a_go_xcall
== (struct a_go_xcall
*)-1)
2451 else if(a_go_xcall
->gx_upto
== gcp
){
2452 /* Indicate that "our" (ex-) parent now hosts xcall optimization */
2453 a_go_ctx
->gc_flags
|= a_GO_XCALL_LOOP
;
2454 while(a_go_xcall
!= NULL
){
2456 struct a_go_xcall
*gxp
;
2460 a_go_ctx
->gc_flags
&= ~a_GO_XCALL_LOOP_ERROR
;
2464 /* Recreate the ARGV of this command on the LOFI memory of the
2465 * hosting a_go_ctx, so that it will become auto-reclaimed */
2469 vp
= n_lofi_alloc(gxp
->gx_buflen
);
2473 cp
+= sizeof(*argv
) * (gxp
->gx_argc
+ 1);
2474 for(i
= 0; i
< gxp
->gx_argc
; ++i
){
2476 memcpy(cp
, gxp
->gx_argv
[i
].s
, gxp
->gx_argv
[i
].l
+1);
2477 cp
+= gxp
->gx_argv
[i
].l
+1;
2488 rv
= ((a_go_ctx
->gc_flags
& a_GO_XCALL_LOOP_ERROR
) != 0);
2489 a_go_ctx
->gc_flags
&= ~a_GO_XCALL_LOOP_MASK
;
2497 n_go_command(enum n_go_input_flags gif
, char const *cmd
){
2498 struct a_go_ctx
*gcp
;
2504 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2508 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2509 ial
+ 2*sizeof(char*));
2510 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2514 gcp
->gc_outer
= a_go_ctx
;
2515 gcp
->gc_osigmask
= osigmask
;
2516 gcp
->gc_flags
= a_GO_FREE
| a_GO_MACRO
| a_GO_MACRO_CMD
|
2517 ((!(a_go_ctx
->gc_flags
& a_GO_TYPE_MASK
) ||
2518 (a_go_ctx
->gc_flags
& a_GO_SUPER_MACRO
)) ? a_GO_SUPER_MACRO
: 0);
2519 gcp
->gc_lines
= (void*)&gcp
->gc_name
[ial
];
2520 memcpy(gcp
->gc_lines
[0] = &gcp
->gc_name
[0], cmd
, i
);
2521 gcp
->gc_lines
[1] = NULL
;
2524 n_go_data
= &gcp
->gc_data
;
2525 n_pstate
|= n_PS_ROBOT
;
2526 rv
= a_go_event_loop(gcp
, gif
);
2532 n_go_splice_hack(char const *cmd
, FILE *new_stdin
, FILE *new_stdout
,
2533 ui32_t new_psonce
, void (*on_finalize
)(void*), void *finalize_arg
){
2534 struct a_go_ctx
*gcp
;
2539 sigprocmask(SIG_BLOCK
, NULL
, &osigmask
);
2541 gcp
= n_alloc(n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
) +
2542 (i
= strlen(cmd
) +1));
2543 memset(gcp
, 0, n_VSTRUCT_SIZEOF(struct a_go_ctx
, gc_name
));
2547 gcp
->gc_outer
= a_go_ctx
;
2548 gcp
->gc_osigmask
= osigmask
;
2549 gcp
->gc_file
= new_stdin
;
2550 gcp
->gc_flags
= a_GO_FREE
| a_GO_SPLICE
;
2551 gcp
->gc_on_finalize
= on_finalize
;
2552 gcp
->gc_finalize_arg
= finalize_arg
;
2553 gcp
->gc_splice_stdin
= n_stdin
;
2554 gcp
->gc_splice_stdout
= n_stdout
;
2555 gcp
->gc_splice_psonce
= n_psonce
;
2556 memcpy(gcp
->gc_name
, cmd
, i
);
2558 n_stdin
= new_stdin
;
2559 n_stdout
= new_stdout
;
2560 n_psonce
= new_psonce
;
2562 n_pstate
|= n_PS_ROBOT
;
2569 n_go_splice_hack_remove_after_jump(void){
2570 a_go_cleanup(a_GO_CLEANUP_TEARDOWN
);
2574 n_go_may_yield_control(void){ /* TODO this is a terrible hack */
2575 struct a_go_ctx
*gcp
;
2581 /* Only when interactive and startup completed */
2582 if((n_psonce
& (n_PSO_INTERACTIVE
| n_PSO_STARTED
)) !=
2583 (n_PSO_INTERACTIVE
| n_PSO_STARTED
))
2586 /* Not when running any hook */
2587 if(n_pstate
& n_PS_HOOK_MASK
)
2590 /* Traverse up the stack:
2591 * . not when controlled by a child process
2592 * TODO . not when there are pipes involved, we neither handle job control,
2593 * TODO nor process groups, that is, controlling terminal acceptably
2594 * . not when sourcing a file */
2595 for(gcp
= a_go_ctx
; gcp
!= NULL
; gcp
= gcp
->gc_outer
){
2596 if(gcp
->gc_flags
& (a_GO_PIPE
| a_GO_FILE
| a_GO_SPLICE
))