Bug Summary

File:gl/argp-help.c
Location:line 1654, column 19
Description:Dereference of null pointer

Annotated Source Code

1/* Hierarchial argument parsing help output
2 Copyright (C) 1995-2005, 2007, 2009-2012 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Miles Bader <miles@gnu.ai.mit.edu>.
5
6 This program is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19#ifndef _GNU_SOURCE1
20# define _GNU_SOURCE1 1
21#endif
22
23#ifdef HAVE_CONFIG_H1
24# include <config.h>
25#endif
26
27#include <alloca__builtin_alloca.h>
28#include <errno(*__errno_location ()).h>
29#include <stddef.h>
30#include <stdlib.h>
31#include <string.h>
32#include <assert.h>
33#include <stdarg.h>
34#include <ctype.h>
35#include <limits.h>
36#ifdef USE_IN_LIBIO
37# include <wchar.h>
38#endif
39
40#ifdef _LIBC
41# include <libintl.h>
42# undef dgettext
43# define dgettext(domain, msgid) \
44 INTUSE(__dcgettext) (domain, msgid, LC_MESSAGES)
45#else
46# include "gettext.h"
47#endif
48
49#include "argp.h"
50#include "argp-fmtstream.h"
51#include "argp-namefrob.h"
52
53#ifndef SIZE_MAX((size_t) -1)
54# define SIZE_MAX((size_t) -1) ((size_t) -1)
55#endif
56
57/* User-selectable (using an environment variable) formatting parameters.
58
59 These may be specified in an environment variable called 'ARGP_HELP_FMT',
60 with a contents like: VAR1=VAL1,VAR2=VAL2,BOOLVAR2,no-BOOLVAR2
61 Where VALn must be a positive integer. The list of variables is in the
62 UPARAM_NAMES vector, below. */
63
64/* Default parameters. */
65#define DUP_ARGS0 0 /* True if option argument can be duplicated. */
66#define DUP_ARGS_NOTE1 1 /* True to print a note about duplicate args. */
67#define SHORT_OPT_COL2 2 /* column in which short options start */
68#define LONG_OPT_COL6 6 /* column in which long options start */
69#define DOC_OPT_COL2 2 /* column in which doc options start */
70#define OPT_DOC_COL29 29 /* column in which option text starts */
71#define HEADER_COL1 1 /* column in which group headers are printed */
72#define USAGE_INDENT12 12 /* indentation of wrapped usage lines */
73#define RMARGIN79 79 /* right margin used for wrapping */
74
75/* User-selectable (using an environment variable) formatting parameters.
76 They must all be of type 'int' for the parsing code to work. */
77struct uparams
78{
79 /* If true, arguments for an option are shown with both short and long
80 options, even when a given option has both, e.g. '-x ARG, --longx=ARG'.
81 If false, then if an option has both, the argument is only shown with
82 the long one, e.g., '-x, --longx=ARG', and a message indicating that
83 this really means both is printed below the options. */
84 int dup_args;
85
86 /* This is true if when DUP_ARGS is false, and some duplicate arguments have
87 been suppressed, an explanatory message should be printed. */
88 int dup_args_note;
89
90 /* Various output columns. */
91 int short_opt_col; /* column in which short options start */
92 int long_opt_col; /* column in which long options start */
93 int doc_opt_col; /* column in which doc options start */
94 int opt_doc_col; /* column in which option text starts */
95 int header_col; /* column in which group headers are printed */
96 int usage_indent; /* indentation of wrapped usage lines */
97 int rmargin; /* right margin used for wrapping */
98
99 int valid; /* True when the values in here are valid. */
100};
101
102/* This is a global variable, as user options are only ever read once. */
103static struct uparams uparams = {
104 DUP_ARGS0, DUP_ARGS_NOTE1,
105 SHORT_OPT_COL2, LONG_OPT_COL6, DOC_OPT_COL2, OPT_DOC_COL29, HEADER_COL1,
106 USAGE_INDENT12, RMARGIN79,
107 0
108};
109
110/* A particular uparam, and what the user name is. */
111struct uparam_name
112{
113 const char *name; /* User name. */
114 int is_bool; /* Whether it's 'boolean'. */
115 size_t uparams_offs; /* Location of the (int) field in UPARAMS. */
116};
117
118/* The name-field mappings we know about. */
119static const struct uparam_name uparam_names[] =
120{
121 { "dup-args", 1, offsetof (struct uparams, dup_args)__builtin_offsetof(struct uparams, dup_args) },
122 { "dup-args-note", 1, offsetof (struct uparams, dup_args_note)__builtin_offsetof(struct uparams, dup_args_note) },
123 { "short-opt-col", 0, offsetof (struct uparams, short_opt_col)__builtin_offsetof(struct uparams, short_opt_col) },
124 { "long-opt-col", 0, offsetof (struct uparams, long_opt_col)__builtin_offsetof(struct uparams, long_opt_col) },
125 { "doc-opt-col", 0, offsetof (struct uparams, doc_opt_col)__builtin_offsetof(struct uparams, doc_opt_col) },
126 { "opt-doc-col", 0, offsetof (struct uparams, opt_doc_col)__builtin_offsetof(struct uparams, opt_doc_col) },
127 { "header-col", 0, offsetof (struct uparams, header_col)__builtin_offsetof(struct uparams, header_col) },
128 { "usage-indent", 0, offsetof (struct uparams, usage_indent)__builtin_offsetof(struct uparams, usage_indent) },
129 { "rmargin", 0, offsetof (struct uparams, rmargin)__builtin_offsetof(struct uparams, rmargin) },
130 { 0 }
131};
132
133static void
134validate_uparams (const struct argp_state *state, struct uparams *upptr)
135{
136 const struct uparam_name *up;
137
138 for (up = uparam_names; up->name; up++)
139 {
140 if (up->is_bool
141 || up->uparams_offs == offsetof (struct uparams, rmargin)__builtin_offsetof(struct uparams, rmargin))
142 continue;
143 if (*(int *)((char *)upptr + up->uparams_offs) >= upptr->rmargin)
144 {
145 __argp_failureargp_failure (state, 0, 0,
146 dgettext (state->root_argp->argp_domain,
147 "\
148ARGP_HELP_FMT: %s value is less than or equal to %s"),
149 "rmargin", up->name);
150 return;
151 }
152 }
153 uparams = *upptr;
154 uparams.valid = 1;
155}
156
157/* Read user options from the environment, and fill in UPARAMS appropiately. */
158static void
159fill_in_uparams (const struct argp_state *state)
160{
161 const char *var = getenv ("ARGP_HELP_FMT");
162 struct uparams new_params = uparams;
163
164#define SKIPWS(p)do { while (((*__ctype_b_loc ())[(int) (((unsigned char) *p))
] & (unsigned short int) _ISspace)) p++; } while (0); do { while (isspace ((unsigned char) *p)((*__ctype_b_loc ())[(int) (((unsigned char) *p))] & (unsigned
short int) _ISspace)) p++; } while (0);
165
166 if (var)
167 {
168 /* Parse var. */
169 while (*var)
170 {
171 SKIPWS (var)do { while (((*__ctype_b_loc ())[(int) (((unsigned char) *var
))] & (unsigned short int) _ISspace)) var++; } while (0);;
172
173 if (isalpha ((unsigned char) *var)((*__ctype_b_loc ())[(int) (((unsigned char) *var))] & (unsigned
short int) _ISalpha))
174 {
175 size_t var_len;
176 const struct uparam_name *un;
177 int unspec = 0, val = 0;
178 const char *arg = var;
179
180 while (isalnum ((unsigned char) *arg)((*__ctype_b_loc ())[(int) (((unsigned char) *arg))] & (unsigned
short int) _ISalnum) || *arg == '-' || *arg == '_')
181 arg++;
182 var_len = arg - var;
183
184 SKIPWS (arg)do { while (((*__ctype_b_loc ())[(int) (((unsigned char) *arg
))] & (unsigned short int) _ISspace)) arg++; } while (0);;
185
186 if (*arg == '\0' || *arg == ',')
187 unspec = 1;
188 else if (*arg == '=')
189 {
190 arg++;
191 SKIPWS (arg)do { while (((*__ctype_b_loc ())[(int) (((unsigned char) *arg
))] & (unsigned short int) _ISspace)) arg++; } while (0);;
192 }
193
194 if (unspec)
195 {
196 if (var[0] == 'n' && var[1] == 'o' && var[2] == '-')
197 {
198 val = 0;
199 var += 3;
200 var_len -= 3;
201 }
202 else
203 val = 1;
204 }
205 else if (isdigit ((unsigned char) *arg)((*__ctype_b_loc ())[(int) (((unsigned char) *arg))] & (unsigned
short int) _ISdigit))
206 {
207 val = atoi (arg);
208 while (isdigit ((unsigned char) *arg)((*__ctype_b_loc ())[(int) (((unsigned char) *arg))] & (unsigned
short int) _ISdigit))
209 arg++;
210 SKIPWS (arg)do { while (((*__ctype_b_loc ())[(int) (((unsigned char) *arg
))] & (unsigned short int) _ISspace)) arg++; } while (0);;
211 }
212
213 for (un = uparam_names; un->name; un++)
214 if (strlen (un->name) == var_len
215 && strncmp (var, un->name, var_len) == 0)
216 {
217 if (unspec && !un->is_bool)
218 __argp_failureargp_failure (state, 0, 0,
219 dgettext (state->root_argp->argp_domain,
220 "\
221%.*s: ARGP_HELP_FMT parameter requires a value"),
222 (int) var_len, var);
223 else if (val < 0)
224 __argp_failureargp_failure (state, 0, 0,
225 dgettext (state->root_argp->argp_domain,
226 "\
227%.*s: ARGP_HELP_FMT parameter must be positive"),
228 (int) var_len, var);
229 else
230 *(int *)((char *)&new_params + un->uparams_offs) = val;
231 break;
232 }
233 if (! un->name)
234 __argp_failureargp_failure (state, 0, 0,
235 dgettext (state->root_argp->argp_domain, "\
236%.*s: Unknown ARGP_HELP_FMT parameter"),
237 (int) var_len, var);
238
239 var = arg;
240 if (*var == ',')
241 var++;
242 }
243 else if (*var)
244 {
245 __argp_failureargp_failure (state, 0, 0,
246 dgettext (state->root_argp->argp_domain,
247 "Garbage in ARGP_HELP_FMT: %s"), var);
248 break;
249 }
250 }
251 validate_uparams (state, &new_params);
252 }
253}
254
255/* Returns true if OPT hasn't been marked invisible. Visibility only affects
256 whether OPT is displayed or used in sorting, not option shadowing. */
257#define ovisible(opt)(! ((opt)->flags & 0x2)) (! ((opt)->flags & OPTION_HIDDEN0x2))
258
259/* Returns true if OPT is an alias for an earlier option. */
260#define oalias(opt)((opt)->flags & 0x4) ((opt)->flags & OPTION_ALIAS0x4)
261
262/* Returns true if OPT is a documentation-only entry. */
263#define odoc(opt)((opt)->flags & 0x8) ((opt)->flags & OPTION_DOC0x8)
264
265/* Returns true if OPT should not be translated */
266#define onotrans(opt)((opt)->flags & 0x20) ((opt)->flags & OPTION_NO_TRANS0x20)
267
268/* Returns true if OPT is the end-of-list marker for a list of options. */
269#define oend(opt)_option_is_end (opt) __option_is_end_option_is_end (opt)
270
271/* Returns true if OPT has a short option. */
272#define oshort(opt)_option_is_short (opt) __option_is_short_option_is_short (opt)
273
274/*
275 The help format for a particular option is like:
276
277 -xARG, -yARG, --long1=ARG, --long2=ARG Documentation...
278
279 Where ARG will be omitted if there's no argument, for this option, or
280 will be surrounded by "[" and "]" appropiately if the argument is
281 optional. The documentation string is word-wrapped appropiately, and if
282 the list of options is long enough, it will be started on a separate line.
283 If there are no short options for a given option, the first long option is
284 indented slighly in a way that's supposed to make most long options appear
285 to be in a separate column.
286
287 For example, the following output (from ps):
288
289 -p PID, --pid=PID List the process PID
290 --pgrp=PGRP List processes in the process group PGRP
291 -P, -x, --no-parent Include processes without parents
292 -Q, --all-fields Don't elide unusable fields (normally if there's
293 some reason ps can't print a field for any
294 process, it's removed from the output entirely)
295 -r, --reverse, --gratuitously-long-reverse-option
296 Reverse the order of any sort
297 --session[=SID] Add the processes from the session SID (which
298 defaults to the sid of the current process)
299
300 Here are some more options:
301 -f ZOT, --foonly=ZOT Glork a foonly
302 -z, --zaza Snit a zar
303
304 -?, --help Give this help list
305 --usage Give a short usage message
306 -V, --version Print program version
307
308 The struct argp_option array for the above could look like:
309
310 {
311 {"pid", 'p', "PID", 0, "List the process PID"},
312 {"pgrp", OPT_PGRP, "PGRP", 0, "List processes in the process group PGRP"},
313 {"no-parent", 'P', 0, 0, "Include processes without parents"},
314 {0, 'x', 0, OPTION_ALIAS},
315 {"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally"
316 " if there's some reason ps can't"
317 " print a field for any process, it's"
318 " removed from the output entirely)" },
319 {"reverse", 'r', 0, 0, "Reverse the order of any sort"},
320 {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS},
321 {"session", OPT_SESS, "SID", OPTION_ARG_OPTIONAL,
322 "Add the processes from the session"
323 " SID (which defaults to the sid of"
324 " the current process)" },
325
326 {0,0,0,0, "Here are some more options:"},
327 {"foonly", 'f', "ZOT", 0, "Glork a foonly"},
328 {"zaza", 'z', 0, 0, "Snit a zar"},
329
330 {0}
331 }
332
333 Note that the last three options are automatically supplied by argp_parse,
334 unless you tell it not to with ARGP_NO_HELP.
335
336*/
337
338/* Returns true if CH occurs between BEG and END. */
339static int
340find_char (char ch, char *beg, char *end)
341{
342 while (beg < end)
343 if (*beg == ch)
344 return 1;
345 else
346 beg++;
347 return 0;
348}
349
350struct hol_cluster; /* fwd decl */
351
352struct hol_entry
353{
354 /* First option. */
355 const struct argp_option *opt;
356 /* Number of options (including aliases). */
357 unsigned num;
358
359 /* A pointers into the HOL's short_options field, to the first short option
360 letter for this entry. The order of the characters following this point
361 corresponds to the order of options pointed to by OPT, and there are at
362 most NUM. A short option recorded in an option following OPT is only
363 valid if it occurs in the right place in SHORT_OPTIONS (otherwise it's
364 probably been shadowed by some other entry). */
365 char *short_options;
366
367 /* Entries are sorted by their group first, in the order:
368 1, 2, ..., n, 0, -m, ..., -2, -1
369 and then alphabetically within each group. The default is 0. */
370 int group;
371
372 /* The cluster of options this entry belongs to, or 0 if none. */
373 struct hol_cluster *cluster;
374
375 /* The argp from which this option came. */
376 const struct argp *argp;
377
378 /* Position in the array */
379 unsigned ord;
380};
381
382/* A cluster of entries to reflect the argp tree structure. */
383struct hol_cluster
384{
385 /* A descriptive header printed before options in this cluster. */
386 const char *header;
387
388 /* Used to order clusters within the same group with the same parent,
389 according to the order in which they occurred in the parent argp's child
390 list. */
391 int index;
392
393 /* How to sort this cluster with respect to options and other clusters at the
394 same depth (clusters always follow options in the same group). */
395 int group;
396
397 /* The cluster to which this cluster belongs, or 0 if it's at the base
398 level. */
399 struct hol_cluster *parent;
400
401 /* The argp from which this cluster is (eventually) derived. */
402 const struct argp *argp;
403
404 /* The distance this cluster is from the root. */
405 int depth;
406
407 /* Clusters in a given hol are kept in a linked list, to make freeing them
408 possible. */
409 struct hol_cluster *next;
410};
411
412/* A list of options for help. */
413struct hol
414{
415 /* An array of hol_entry's. */
416 struct hol_entry *entries;
417 /* The number of entries in this hol. If this field is zero, the others
418 are undefined. */
419 unsigned num_entries;
420
421 /* A string containing all short options in this HOL. Each entry contains
422 pointers into this string, so the order can't be messed with blindly. */
423 char *short_options;
424
425 /* Clusters of entries in this hol. */
426 struct hol_cluster *clusters;
427};
428
429/* Create a struct hol from the options in ARGP. CLUSTER is the
430 hol_cluster in which these entries occur, or 0, if at the root. */
431static struct hol *
432make_hol (const struct argp *argp, struct hol_cluster *cluster)
433{
434 char *so;
435 const struct argp_option *o;
436 const struct argp_option *opts = argp->options;
437 struct hol_entry *entry;
438 unsigned num_short_options = 0;
439 struct hol *hol = malloc (sizeof (struct hol));
440
441 assert (hol)((hol) ? (void) (0) : __assert_fail ("hol", "argp-help.c", 441
, __PRETTY_FUNCTION__));
442
443 hol->num_entries = 0;
444 hol->clusters = 0;
445
446 if (opts)
447 {
448 int cur_group = 0;
449
450 /* The first option must not be an alias. */
451 assert (! oalias (opts))((! ((opts)->flags & 0x4)) ? (void) (0) : __assert_fail
("! ((opts)->flags & 0x4)", "argp-help.c", 451, __PRETTY_FUNCTION__
));
452
453 /* Calculate the space needed. */
454 for (o = opts; ! oend (o)_option_is_end (o); o++)
455 {
456 if (! oalias (o)((o)->flags & 0x4))
457 hol->num_entries++;
458 if (oshort (o)_option_is_short (o))
459 num_short_options++; /* This is an upper bound. */
460 }
461
462 hol->entries = malloc (sizeof (struct hol_entry) * hol->num_entries);
463 hol->short_options = malloc (num_short_options + 1);
464
465 assert (hol->entries && hol->short_options)((hol->entries && hol->short_options) ? (void) (
0) : __assert_fail ("hol->entries && hol->short_options"
, "argp-help.c", 465, __PRETTY_FUNCTION__));
466 if (SIZE_MAX((size_t) -1) <= UINT_MAX(2147483647 *2U +1U))
467 assert (hol->num_entries <= SIZE_MAX / sizeof (struct hol_entry))((hol->num_entries <= ((size_t) -1) / sizeof (struct hol_entry
)) ? (void) (0) : __assert_fail ("hol->num_entries <= ((size_t) -1) / sizeof (struct hol_entry)"
, "argp-help.c", 467, __PRETTY_FUNCTION__));
468
469 /* Fill in the entries. */
470 so = hol->short_options;
471 for (o = opts, entry = hol->entries; ! oend (o)_option_is_end (o); entry++)
472 {
473 entry->opt = o;
474 entry->num = 0;
475 entry->short_options = so;
476 entry->group = cur_group =
477 o->group
478 ? o->group
479 : ((!o->name && !o->key)
480 ? cur_group + 1
481 : cur_group);
482 entry->cluster = cluster;
483 entry->argp = argp;
484
485 do
486 {
487 entry->num++;
488 if (oshort (o)_option_is_short (o) && ! find_char (o->key, hol->short_options, so))
489 /* O has a valid short option which hasn't already been used.*/
490 *so++ = o->key;
491 o++;
492 }
493 while (! oend (o)_option_is_end (o) && oalias (o)((o)->flags & 0x4));
494 }
495 *so = '\0'; /* null terminated so we can find the length */
496 }
497
498 return hol;
499}
500
501/* Add a new cluster to HOL, with the given GROUP and HEADER (taken from the
502 associated argp child list entry), INDEX, and PARENT, and return a pointer
503 to it. ARGP is the argp that this cluster results from. */
504static struct hol_cluster *
505hol_add_cluster (struct hol *hol, int group, const char *header, int index,
506 struct hol_cluster *parent, const struct argp *argp)
507{
508 struct hol_cluster *cl = malloc (sizeof (struct hol_cluster));
509 if (cl)
510 {
511 cl->group = group;
512 cl->header = header;
513
514 cl->index = index;
515 cl->parent = parent;
516 cl->argp = argp;
517 cl->depth = parent ? parent->depth + 1 : 0;
518
519 cl->next = hol->clusters;
520 hol->clusters = cl;
521 }
522 return cl;
523}
524
525/* Free HOL and any resources it uses. */
526static void
527hol_free (struct hol *hol)
528{
529 struct hol_cluster *cl = hol->clusters;
530
531 while (cl)
532 {
533 struct hol_cluster *next = cl->next;
534 free (cl);
535 cl = next;
536 }
537
538 if (hol->num_entries > 0)
539 {
540 free (hol->entries);
541 free (hol->short_options);
542 }
543
544 free (hol);
545}
546
547static int
548hol_entry_short_iterate (const struct hol_entry *entry,
549 int (*func)(const struct argp_option *opt,
550 const struct argp_option *real,
551 const char *domain, void *cookie),
552 const char *domain, void *cookie)
553{
554 unsigned nopts;
555 int val = 0;
556 const struct argp_option *opt, *real = entry->opt;
557 char *so = entry->short_options;
558
559 for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
560 if (oshort (opt)_option_is_short (opt) && *so == opt->key)
561 {
562 if (!oalias (opt)((opt)->flags & 0x4))
563 real = opt;
564 if (ovisible (opt)(! ((opt)->flags & 0x2)))
565 val = (*func)(opt, real, domain, cookie);
566 so++;
567 }
568
569 return val;
570}
571
572static inline int
573#if __GNUC__4 >= 3
574__attribute__ ((always_inline))
575#endif
576hol_entry_long_iterate (const struct hol_entry *entry,
577 int (*func)(const struct argp_option *opt,
578 const struct argp_option *real,
579 const char *domain, void *cookie),
580 const char *domain, void *cookie)
581{
582 unsigned nopts;
583 int val = 0;
584 const struct argp_option *opt, *real = entry->opt;
585
586 for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
587 if (opt->name)
588 {
589 if (!oalias (opt)((opt)->flags & 0x4))
590 real = opt;
591 if (ovisible (opt)(! ((opt)->flags & 0x2)))
592 val = (*func)(opt, real, domain, cookie);
593 }
594
595 return val;
596}
597
598/* Iterator that returns true for the first short option. */
599static int
600until_short (const struct argp_option *opt, const struct argp_option *real,
601 const char *domain, void *cookie)
602{
603 return oshort (opt)_option_is_short (opt) ? opt->key : 0;
604}
605
606/* Returns the first valid short option in ENTRY, or 0 if there is none. */
607static char
608hol_entry_first_short (const struct hol_entry *entry)
609{
610 return hol_entry_short_iterate (entry, until_short,
611 entry->argp->argp_domain, 0);
612}
613
614/* Returns the first valid long option in ENTRY, or 0 if there is none. */
615static const char *
616hol_entry_first_long (const struct hol_entry *entry)
617{
618 const struct argp_option *opt;
619 unsigned num;
620 for (opt = entry->opt, num = entry->num; num > 0; opt++, num--)
621 if (opt->name && ovisible (opt)(! ((opt)->flags & 0x2)))
622 return opt->name;
623 return 0;
624}
625
626/* Returns the entry in HOL with the long option name NAME, or 0 if there is
627 none. */
628static struct hol_entry *
629hol_find_entry (struct hol *hol, const char *name)
630{
631 struct hol_entry *entry = hol->entries;
632 unsigned num_entries = hol->num_entries;
633
634 while (num_entries-- > 0)
635 {
636 const struct argp_option *opt = entry->opt;
637 unsigned num_opts = entry->num;
638
639 while (num_opts-- > 0)
640 if (opt->name && ovisible (opt)(! ((opt)->flags & 0x2)) && strcmp (opt->name, name) == 0)
641 return entry;
642 else
643 opt++;
644
645 entry++;
646 }
647
648 return 0;
649}
650
651/* If an entry with the long option NAME occurs in HOL, set it's special
652 sort position to GROUP. */
653static void
654hol_set_group (struct hol *hol, const char *name, int group)
655{
656 struct hol_entry *entry = hol_find_entry (hol, name);
657 if (entry)
658 entry->group = group;
659}
660
661/* Order by group: 0, 1, 2, ..., n, -m, ..., -2, -1.
662 EQ is what to return if GROUP1 and GROUP2 are the same. */
663static int
664group_cmp (int group1, int group2, int eq)
665{
666 if (group1 == group2)
667 return eq;
668 else if ((group1 < 0 && group2 < 0) || (group1 >= 0 && group2 >= 0))
669 return group1 - group2;
670 else
671 return group2 - group1;
672}
673
674/* Compare clusters CL1 & CL2 by the order that they should appear in
675 output. */
676static int
677hol_cluster_cmp (const struct hol_cluster *cl1, const struct hol_cluster *cl2)
678{
679 /* If one cluster is deeper than the other, use its ancestor at the same
680 level, so that finding the common ancestor is straightforward.
681
682 clN->depth > 0 means that clN->parent != NULL (see hol_add_cluster) */
683 while (cl1->depth > cl2->depth)
684 cl1 = cl1->parent;
685 while (cl2->depth > cl1->depth)
686 cl2 = cl2->parent;
687
688 /* Now reduce both clusters to their ancestors at the point where both have
689 a common parent; these can be directly compared. */
690 while (cl1->parent != cl2->parent)
691 cl1 = cl1->parent, cl2 = cl2->parent;
692
693 return group_cmp (cl1->group, cl2->group, cl2->index - cl1->index);
694}
695
696/* Return the ancestor of CL that's just below the root (i.e., has a parent
697 of 0). */
698static struct hol_cluster *
699hol_cluster_base (struct hol_cluster *cl)
700{
701 while (cl->parent)
702 cl = cl->parent;
703 return cl;
704}
705
706/* Return true if CL1 is a child of CL2. */
707static int
708hol_cluster_is_child (const struct hol_cluster *cl1,
709 const struct hol_cluster *cl2)
710{
711 while (cl1 && cl1 != cl2)
712 cl1 = cl1->parent;
713 return cl1 == cl2;
714}
715
716/* Given the name of an OPTION_DOC option, modifies NAME to start at the tail
717 that should be used for comparisons, and returns true iff it should be
718 treated as a non-option. */
719static int
720canon_doc_option (const char **name)
721{
722 int non_opt;
723
724 if (!*name)
725 non_opt = 1;
726 else
727 {
728 /* Skip initial whitespace. */
729 while (isspace ((unsigned char) **name)((*__ctype_b_loc ())[(int) (((unsigned char) **name))] & (
unsigned short int) _ISspace))
730 (*name)++;
731 /* Decide whether this looks like an option (leading '-') or not. */
732 non_opt = (**name != '-');
733 /* Skip until part of name used for sorting. */
734 while (**name && !isalnum ((unsigned char) **name)((*__ctype_b_loc ())[(int) (((unsigned char) **name))] & (
unsigned short int) _ISalnum))
735 (*name)++;
736 }
737 return non_opt;
738}
739
740#define HOL_ENTRY_PTRCMP(a,b)((a)->ord < (b)->ord ? -1 : 1) ((a)->ord < (b)->ord ? -1 : 1)
741
742/* Order ENTRY1 & ENTRY2 by the order which they should appear in a help
743 listing. */
744static int
745hol_entry_cmp (const struct hol_entry *entry1,
746 const struct hol_entry *entry2)
747{
748 /* The group numbers by which the entries should be ordered; if either is
749 in a cluster, then this is just the group within the cluster. */
750 int group1 = entry1->group, group2 = entry2->group;
751 int rc;
752
753 if (entry1->cluster != entry2->cluster)
754 {
755 /* The entries are not within the same cluster, so we can't compare them
756 directly, we have to use the appropiate clustering level too. */
757 if (! entry1->cluster)
758 /* ENTRY1 is at the "base level", not in a cluster, so we have to
759 compare it's group number with that of the base cluster in which
760 ENTRY2 resides. Note that if they're in the same group, the
761 clustered option always comes laster. */
762 return group_cmp (group1, hol_cluster_base (entry2->cluster)->group, -1);
763 else if (! entry2->cluster)
764 /* Likewise, but ENTRY2's not in a cluster. */
765 return group_cmp (hol_cluster_base (entry1->cluster)->group, group2, 1);
766 else
767 /* Both entries are in clusters, we can just compare the clusters. */
768 return (rc = hol_cluster_cmp (entry1->cluster, entry2->cluster)) ?
769 rc : HOL_ENTRY_PTRCMP (entry1, entry2)((entry1)->ord < (entry2)->ord ? -1 : 1);
770 }
771 else if (group1 == group2)
772 /* The entries are both in the same cluster and group, so compare them
773 alphabetically. */
774 {
775 int short1 = hol_entry_first_short (entry1);
776 int short2 = hol_entry_first_short (entry2);
777 int doc1 = odoc (entry1->opt)((entry1->opt)->flags & 0x8);
778 int doc2 = odoc (entry2->opt)((entry2->opt)->flags & 0x8);
779 const char *long1 = hol_entry_first_long (entry1);
780 const char *long2 = hol_entry_first_long (entry2);
781
782 if (doc1)
783 doc1 = canon_doc_option (&long1);
784 if (doc2)
785 doc2 = canon_doc_option (&long2);
786
787 if (doc1 != doc2)
788 /* "documentation" options always follow normal options (or
789 documentation options that *look* like normal options). */
790 return doc1 - doc2;
791 else if (!short1 && !short2 && long1 && long2)
792 /* Only long options. */
793 return (rc = __strcasecmpstrcasecmp (long1, long2)) ?
794 rc : HOL_ENTRY_PTRCMP (entry1, entry2)((entry1)->ord < (entry2)->ord ? -1 : 1);
795 else
796 /* Compare short/short, long/short, short/long, using the first
797 character of long options. Entries without *any* valid
798 options (such as options with OPTION_HIDDEN set) will be put
799 first, but as they're not displayed, it doesn't matter where
800 they are. */
801 {
802 unsigned char first1 = short1 ? short1 : long1 ? *long1 : 0;
803 unsigned char first2 = short2 ? short2 : long2 ? *long2 : 0;
804 /* Use tolower, not _tolower, since only the former is
805 guaranteed to work on something already lower case. */
806 int lower_cmp = tolower (first1) - tolower (first2);
807 /* Compare ignoring case, except when the options are both the
808 same letter, in which case lower-case always comes first. */
809 return lower_cmp ? lower_cmp :
810 (rc = first2 - first1) ?
811 rc : HOL_ENTRY_PTRCMP (entry1, entry2)((entry1)->ord < (entry2)->ord ? -1 : 1);
812 }
813 }
814 else
815 /* Within the same cluster, but not the same group, so just compare
816 groups. */
817 return group_cmp (group1, group2, HOL_ENTRY_PTRCMP (entry1, entry2)((entry1)->ord < (entry2)->ord ? -1 : 1));
818}
819
820/* Version of hol_entry_cmp with correct signature for qsort. */
821static int
822hol_entry_qcmp (const void *entry1_v, const void *entry2_v)
823{
824 return hol_entry_cmp (entry1_v, entry2_v);
825}
826
827/* Sort HOL by group and alphabetically by option name (with short options
828 taking precedence over long). Since the sorting is for display purposes
829 only, the shadowing of options isn't effected. */
830static void
831hol_sort (struct hol *hol)
832{
833 if (hol->num_entries > 0)
834 {
835 unsigned i;
836 struct hol_entry *e;
837 for (i = 0, e = hol->entries; i < hol->num_entries; i++, e++)
838 e->ord = i;
839 qsort (hol->entries, hol->num_entries, sizeof (struct hol_entry),
840 hol_entry_qcmp);
841 }
842}
843
844/* Append MORE to HOL, destroying MORE in the process. Options in HOL shadow
845 any in MORE with the same name. */
846static void
847hol_append (struct hol *hol, struct hol *more)
848{
849 struct hol_cluster **cl_end = &hol->clusters;
850
851 /* Steal MORE's cluster list, and add it to the end of HOL's. */
852 while (*cl_end)
853 cl_end = &(*cl_end)->next;
854 *cl_end = more->clusters;
855 more->clusters = 0;
856
857 /* Merge entries. */
858 if (more->num_entries > 0)
859 {
860 if (hol->num_entries == 0)
861 {
862 hol->num_entries = more->num_entries;
863 hol->entries = more->entries;
864 hol->short_options = more->short_options;
865 more->num_entries = 0; /* Mark MORE's fields as invalid. */
866 }
867 else
868 /* Append the entries in MORE to those in HOL, taking care to only add
869 non-shadowed SHORT_OPTIONS values. */
870 {
871 unsigned left;
872 char *so, *more_so;
873 struct hol_entry *e;
874 unsigned num_entries = hol->num_entries + more->num_entries;
875 struct hol_entry *entries =
876 malloc (num_entries * sizeof (struct hol_entry));
877 unsigned hol_so_len = strlen (hol->short_options);
878 char *short_options =
879 malloc (hol_so_len + strlen (more->short_options) + 1);
880
881 assert (entries && short_options)((entries && short_options) ? (void) (0) : __assert_fail
("entries && short_options", "argp-help.c", 881, __PRETTY_FUNCTION__
));
882 if (SIZE_MAX((size_t) -1) <= UINT_MAX(2147483647 *2U +1U))
883 assert (num_entries <= SIZE_MAX / sizeof (struct hol_entry))((num_entries <= ((size_t) -1) / sizeof (struct hol_entry)
) ? (void) (0) : __assert_fail ("num_entries <= ((size_t) -1) / sizeof (struct hol_entry)"
, "argp-help.c", 883, __PRETTY_FUNCTION__));
884
885 __mempcpymempcpy (__mempcpymempcpy (entries, hol->entries,
886 hol->num_entries * sizeof (struct hol_entry)),
887 more->entries,
888 more->num_entries * sizeof (struct hol_entry));
889
890 __mempcpymempcpy (short_options, hol->short_options, hol_so_len);
891
892 /* Fix up the short options pointers from HOL. */
893 for (e = entries, left = hol->num_entries; left > 0; e++, left--)
894 e->short_options =
895 short_options + (e->short_options - hol->short_options);
896
897 /* Now add the short options from MORE, fixing up its entries
898 too. */
899 so = short_options + hol_so_len;
900 more_so = more->short_options;
901 for (left = more->num_entries; left > 0; e++, left--)
902 {
903 int opts_left;
904 const struct argp_option *opt;
905
906 e->short_options = so;
907
908 for (opts_left = e->num, opt = e->opt; opts_left; opt++, opts_left--)
909 {
910 int ch = *more_so;
911 if (oshort (opt)_option_is_short (opt) && ch == opt->key)
912 /* The next short option in MORE_SO, CH, is from OPT. */
913 {
914 if (! find_char (ch, short_options,
915 short_options + hol_so_len))
916 /* The short option CH isn't shadowed by HOL's options,
917 so add it to the sum. */
918 *so++ = ch;
919 more_so++;
920 }
921 }
922 }
923
924 *so = '\0';
925
926 free (hol->entries);
927 free (hol->short_options);
928
929 hol->entries = entries;
930 hol->num_entries = num_entries;
931 hol->short_options = short_options;
932 }
933 }
934
935 hol_free (more);
936}
937
938/* Inserts enough spaces to make sure STREAM is at column COL. */
939static void
940indent_to (argp_fmtstream_t stream, unsigned col)
941{
942 int needed = col - __argp_fmtstream_pointargp_fmtstream_point (stream);
943 while (needed-- > 0)
944 __argp_fmtstream_putcargp_fmtstream_putc (stream, ' ');
945}
946
947/* Output to STREAM either a space, or a newline if there isn't room for at
948 least ENSURE characters before the right margin. */
949static void
950space (argp_fmtstream_t stream, size_t ensure)
951{
952 if (__argp_fmtstream_pointargp_fmtstream_point (stream) + ensure
953 >= __argp_fmtstream_rmargin (stream)((stream)->rmargin))
954 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
955 else
956 __argp_fmtstream_putcargp_fmtstream_putc (stream, ' ');
957}
958
959/* If the option REAL has an argument, we print it in using the printf
960 format REQ_FMT or OPT_FMT depending on whether it's a required or
961 optional argument. */
962static void
963arg (const struct argp_option *real, const char *req_fmt, const char *opt_fmt,
964 const char *domain, argp_fmtstream_t stream)
965{
966 if (real->arg)
967 {
968 if (real->flags & OPTION_ARG_OPTIONAL0x1)
969 __argp_fmtstream_printfargp_fmtstream_printf (stream, opt_fmt,
970 dgettext (domain, real->arg));
971 else
972 __argp_fmtstream_printfargp_fmtstream_printf (stream, req_fmt,
973 dgettext (domain, real->arg));
974 }
975}
976
977/* Helper functions for hol_entry_help. */
978
979/* State used during the execution of hol_help. */
980struct hol_help_state
981{
982 /* PREV_ENTRY should contain the previous entry printed, or 0. */
983 struct hol_entry *prev_entry;
984
985 /* If an entry is in a different group from the previous one, and SEP_GROUPS
986 is true, then a blank line will be printed before any output. */
987 int sep_groups;
988
989 /* True if a duplicate option argument was suppressed (only ever set if
990 UPARAMS.dup_args is false). */
991 int suppressed_dup_arg;
992};
993
994/* Some state used while printing a help entry (used to communicate with
995 helper functions). See the doc for hol_entry_help for more info, as most
996 of the fields are copied from its arguments. */
997struct pentry_state
998{
999 const struct hol_entry *entry;
1000 argp_fmtstream_t stream;
1001 struct hol_help_state *hhstate;
1002
1003 /* True if nothing's been printed so far. */
1004 int first;
1005
1006 /* If non-zero, the state that was used to print this help. */
1007 const struct argp_state *state;
1008};
1009
1010/* If a user doc filter should be applied to DOC, do so. */
1011static const char *
1012filter_doc (const char *doc, int key, const struct argp *argp,
1013 const struct argp_state *state)
1014{
1015 if (argp->help_filter)
1016 /* We must apply a user filter to this output. */
1017 {
1018 void *input = __argp_input_argp_input (argp, state);
1019 return (*argp->help_filter) (key, doc, input);
1020 }
1021 else
1022 /* No filter. */
1023 return doc;
1024}
1025
1026/* Prints STR as a header line, with the margin lines set appropiately, and
1027 notes the fact that groups should be separated with a blank line. ARGP is
1028 the argp that should dictate any user doc filtering to take place. Note
1029 that the previous wrap margin isn't restored, but the left margin is reset
1030 to 0. */
1031static void
1032print_header (const char *str, const struct argp *argp,
1033 struct pentry_state *pest)
1034{
1035 const char *tstr = dgettext (argp->argp_domain, str);
1036 const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_HEADER0x2000003, argp, pest->state);
1037
1038 if (fstr)
1039 {
1040 if (*fstr)
1041 {
1042 if (pest->hhstate->prev_entry)
1043 /* Precede with a blank line. */
1044 __argp_fmtstream_putcargp_fmtstream_putc (pest->stream, '\n');
1045 indent_to (pest->stream, uparams.header_col);
1046 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (pest->stream, uparams.header_col);
1047 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (pest->stream, uparams.header_col);
1048 __argp_fmtstream_putsargp_fmtstream_puts (pest->stream, fstr);
1049 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (pest->stream, 0);
1050 __argp_fmtstream_putcargp_fmtstream_putc (pest->stream, '\n');
1051 }
1052
1053 pest->hhstate->sep_groups = 1; /* Separate subsequent groups. */
1054 }
1055
1056 if (fstr != tstr)
1057 free ((char *) fstr);
1058}
1059
1060/* Inserts a comma if this isn't the first item on the line, and then makes
1061 sure we're at least to column COL. If this *is* the first item on a line,
1062 prints any pending whitespace/headers that should precede this line. Also
1063 clears FIRST. */
1064static void
1065comma (unsigned col, struct pentry_state *pest)
1066{
1067 if (pest->first)
1068 {
1069 const struct hol_entry *pe = pest->hhstate->prev_entry;
1070 const struct hol_cluster *cl = pest->entry->cluster;
1071
1072 if (pest->hhstate->sep_groups && pe && pest->entry->group != pe->group)
1073 __argp_fmtstream_putcargp_fmtstream_putc (pest->stream, '\n');
1074
1075 if (cl && cl->header && *cl->header
1076 && (!pe
1077 || (pe->cluster != cl
1078 && !hol_cluster_is_child (pe->cluster, cl))))
1079 /* If we're changing clusters, then this must be the start of the
1080 ENTRY's cluster unless that is an ancestor of the previous one
1081 (in which case we had just popped into a sub-cluster for a bit).
1082 If so, then print the cluster's header line. */
1083 {
1084 int old_wm = __argp_fmtstream_wmargin (pest->stream)((pest->stream)->wmargin);
1085 print_header (cl->header, cl->argp, pest);
1086 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (pest->stream, old_wm);
1087 }
1088
1089 pest->first = 0;
1090 }
1091 else
1092 __argp_fmtstream_putsargp_fmtstream_puts (pest->stream, ", ");
1093
1094 indent_to (pest->stream, col);
1095}
1096
1097/* Print help for ENTRY to STREAM. */
1098static void
1099hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
1100 argp_fmtstream_t stream, struct hol_help_state *hhstate)
1101{
1102 unsigned num;
1103 const struct argp_option *real = entry->opt, *opt;
1104 char *so = entry->short_options;
1105 int have_long_opt = 0; /* We have any long options. */
1106 /* Saved margins. */
1107 int old_lm = __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (stream, 0);
1108 int old_wm = __argp_fmtstream_wmargin (stream)((stream)->wmargin);
1109 /* PEST is a state block holding some of our variables that we'd like to
1110 share with helper functions. */
1111 struct pentry_state pest;
1112
1113 pest.entry = entry;
1114 pest.stream = stream;
1115 pest.hhstate = hhstate;
1116 pest.first = 1;
1117 pest.state = state;
1118
1119 if (! odoc (real)((real)->flags & 0x8))
1120 for (opt = real, num = entry->num; num > 0; opt++, num--)
1121 if (opt->name && ovisible (opt)(! ((opt)->flags & 0x2)))
1122 {
1123 have_long_opt = 1;
1124 break;
1125 }
1126
1127 /* First emit short options. */
1128 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (stream, uparams.short_opt_col); /* For truly bizarre cases. */
1129 for (opt = real, num = entry->num; num > 0; opt++, num--)
1130 if (oshort (opt)_option_is_short (opt) && opt->key == *so)
1131 /* OPT has a valid (non shadowed) short option. */
1132 {
1133 if (ovisible (opt)(! ((opt)->flags & 0x2)))
1134 {
1135 comma (uparams.short_opt_col, &pest);
1136 __argp_fmtstream_putcargp_fmtstream_putc (stream, '-');
1137 __argp_fmtstream_putcargp_fmtstream_putc (stream, *so);
1138 if (!have_long_opt || uparams.dup_args)
1139 arg (real, " %s", "[%s]", state->root_argp->argp_domain, stream);
1140 else if (real->arg)
1141 hhstate->suppressed_dup_arg = 1;
1142 }
1143 so++;
1144 }
1145
1146 /* Now, long options. */
1147 if (odoc (real)((real)->flags & 0x8))
1148 /* A "documentation" option. */
1149 {
1150 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (stream, uparams.doc_opt_col);
1151 for (opt = real, num = entry->num; num > 0; opt++, num--)
1152 if (opt->name && *opt->name && ovisible (opt)(! ((opt)->flags & 0x2)))
1153 {
1154 comma (uparams.doc_opt_col, &pest);
1155 /* Calling dgettext here isn't quite right, since sorting will
1156 have been done on the original; but documentation options
1157 should be pretty rare anyway... */
1158 __argp_fmtstream_putsargp_fmtstream_puts (stream,
1159 onotrans (opt)((opt)->flags & 0x20) ?
1160 opt->name :
1161 dgettext (state->root_argp->argp_domain,
1162 opt->name));
1163 }
1164 }
1165 else
1166 /* A real long option. */
1167 {
1168 int first_long_opt = 1;
1169
1170 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (stream, uparams.long_opt_col);
1171 for (opt = real, num = entry->num; num > 0; opt++, num--)
1172 if (opt->name && ovisible (opt)(! ((opt)->flags & 0x2)))
1173 {
1174 comma (uparams.long_opt_col, &pest);
1175 __argp_fmtstream_printfargp_fmtstream_printf (stream, "--%s", opt->name);
1176 if (first_long_opt || uparams.dup_args)
1177 arg (real, "=%s", "[=%s]", state->root_argp->argp_domain,
1178 stream);
1179 else if (real->arg)
1180 hhstate->suppressed_dup_arg = 1;
1181 }
1182 }
1183
1184 /* Next, documentation strings. */
1185 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (stream, 0);
1186
1187 if (pest.first)
1188 {
1189 /* Didn't print any switches, what's up? */
1190 if (!oshort (real)_option_is_short (real) && !real->name)
1191 /* This is a group header, print it nicely. */
1192 print_header (real->doc, entry->argp, &pest);
1193 else
1194 /* Just a totally shadowed option or null header; print nothing. */
1195 goto cleanup; /* Just return, after cleaning up. */
1196 }
1197 else
1198 {
1199 const char *tstr = real->doc ? dgettext (state->root_argp->argp_domain,
1200 real->doc) : 0;
1201 const char *fstr = filter_doc (tstr, real->key, entry->argp, state);
1202 if (fstr && *fstr)
1203 {
1204 unsigned int col = __argp_fmtstream_pointargp_fmtstream_point (stream);
1205
1206 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (stream, uparams.opt_doc_col);
1207 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (stream, uparams.opt_doc_col);
1208
1209 if (col > (unsigned int) (uparams.opt_doc_col + 3))
1210 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1211 else if (col >= (unsigned int) uparams.opt_doc_col)
1212 __argp_fmtstream_putsargp_fmtstream_puts (stream, " ");
1213 else
1214 indent_to (stream, uparams.opt_doc_col);
1215
1216 __argp_fmtstream_putsargp_fmtstream_puts (stream, fstr);
1217 }
1218 if (fstr && fstr != tstr)
1219 free ((char *) fstr);
1220
1221 /* Reset the left margin. */
1222 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (stream, 0);
1223 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1224 }
1225
1226 hhstate->prev_entry = entry;
1227
1228cleanup:
1229 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (stream, old_lm);
1230 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (stream, old_wm);
1231}
1232
1233/* Output a long help message about the options in HOL to STREAM. */
1234static void
1235hol_help (struct hol *hol, const struct argp_state *state,
1236 argp_fmtstream_t stream)
1237{
1238 unsigned num;
1239 struct hol_entry *entry;
1240 struct hol_help_state hhstate = { 0, 0, 0 };
1241
1242 for (entry = hol->entries, num = hol->num_entries; num > 0; entry++, num--)
1243 hol_entry_help (entry, state, stream, &hhstate);
1244
1245 if (hhstate.suppressed_dup_arg && uparams.dup_args_note)
1246 {
1247 const char *tstr = dgettext (state->root_argp->argp_domain, "\
1248Mandatory or optional arguments to long options are also mandatory or \
1249optional for any corresponding short options.");
1250 const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_DUP_ARGS_NOTE0x2000005,
1251 state ? state->root_argp : 0, state);
1252 if (fstr && *fstr)
1253 {
1254 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1255 __argp_fmtstream_putsargp_fmtstream_puts (stream, fstr);
1256 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1257 }
1258 if (fstr && fstr != tstr)
1259 free ((char *) fstr);
1260 }
1261}
1262
1263/* Helper functions for hol_usage. */
1264
1265/* If OPT is a short option without an arg, append its key to the string
1266 pointer pointer to by COOKIE, and advance the pointer. */
1267static int
1268add_argless_short_opt (const struct argp_option *opt,
1269 const struct argp_option *real,
1270 const char *domain, void *cookie)
1271{
1272 char **snao_end = cookie;
1273 if (!(opt->arg || real->arg)
1274 && !((opt->flags | real->flags) & OPTION_NO_USAGE0x10))
1275 *(*snao_end)++ = opt->key;
1276 return 0;
1277}
1278
1279/* If OPT is a short option with an arg, output a usage entry for it to the
1280 stream pointed at by COOKIE. */
1281static int
1282usage_argful_short_opt (const struct argp_option *opt,
1283 const struct argp_option *real,
1284 const char *domain, void *cookie)
1285{
1286 argp_fmtstream_t stream = cookie;
1287 const char *arg = opt->arg;
1288 int flags = opt->flags | real->flags;
1289
1290 if (! arg)
1291 arg = real->arg;
1292
1293 if (arg && !(flags & OPTION_NO_USAGE0x10))
1294 {
1295 arg = dgettext (domain, arg);
1296
1297 if (flags & OPTION_ARG_OPTIONAL0x1)
1298 __argp_fmtstream_printfargp_fmtstream_printf (stream, " [-%c[%s]]", opt->key, arg);
1299 else
1300 {
1301 /* Manually do line wrapping so that it (probably) won't
1302 get wrapped at the embedded space. */
1303 space (stream, 6 + strlen (arg));
1304 __argp_fmtstream_printfargp_fmtstream_printf (stream, "[-%c %s]", opt->key, arg);
1305 }
1306 }
1307
1308 return 0;
1309}
1310
1311/* Output a usage entry for the long option opt to the stream pointed at by
1312 COOKIE. */
1313static int
1314usage_long_opt (const struct argp_option *opt,
1315 const struct argp_option *real,
1316 const char *domain, void *cookie)
1317{
1318 argp_fmtstream_t stream = cookie;
1319 const char *arg = opt->arg;
1320 int flags = opt->flags | real->flags;
1321
1322 if (! arg)
1323 arg = real->arg;
1324
1325 if (! (flags & OPTION_NO_USAGE0x10) && !odoc (opt)((opt)->flags & 0x8))
1326 {
1327 if (arg)
1328 {
1329 arg = dgettext (domain, arg);
1330 if (flags & OPTION_ARG_OPTIONAL0x1)
1331 __argp_fmtstream_printfargp_fmtstream_printf (stream, " [--%s[=%s]]", opt->name, arg);
1332 else
1333 __argp_fmtstream_printfargp_fmtstream_printf (stream, " [--%s=%s]", opt->name, arg);
1334 }
1335 else
1336 __argp_fmtstream_printfargp_fmtstream_printf (stream, " [--%s]", opt->name);
1337 }
1338
1339 return 0;
1340}
1341
1342/* Print a short usage description for the arguments in HOL to STREAM. */
1343static void
1344hol_usage (struct hol *hol, argp_fmtstream_t stream)
1345{
1346 if (hol->num_entries > 0)
1347 {
1348 unsigned nentries;
1349 struct hol_entry *entry;
1350 char *short_no_arg_opts = alloca__builtin_alloca (strlen (hol->short_options) + 1);
1351 char *snao_end = short_no_arg_opts;
1352
1353 /* First we put a list of short options without arguments. */
1354 for (entry = hol->entries, nentries = hol->num_entries
1355 ; nentries > 0
1356 ; entry++, nentries--)
1357 hol_entry_short_iterate (entry, add_argless_short_opt,
1358 entry->argp->argp_domain, &snao_end);
1359 if (snao_end > short_no_arg_opts)
1360 {
1361 *snao_end++ = 0;
1362 __argp_fmtstream_printfargp_fmtstream_printf (stream, " [-%s]", short_no_arg_opts);
1363 }
1364
1365 /* Now a list of short options *with* arguments. */
1366 for (entry = hol->entries, nentries = hol->num_entries
1367 ; nentries > 0
1368 ; entry++, nentries--)
1369 hol_entry_short_iterate (entry, usage_argful_short_opt,
1370 entry->argp->argp_domain, stream);
1371
1372 /* Finally, a list of long options (whew!). */
1373 for (entry = hol->entries, nentries = hol->num_entries
1374 ; nentries > 0
1375 ; entry++, nentries--)
1376 hol_entry_long_iterate (entry, usage_long_opt,
1377 entry->argp->argp_domain, stream);
1378 }
1379}
1380
1381/* Make a HOL containing all levels of options in ARGP. CLUSTER is the
1382 cluster in which ARGP's entries should be clustered, or 0. */
1383static struct hol *
1384argp_hol (const struct argp *argp, struct hol_cluster *cluster)
1385{
1386 const struct argp_child *child = argp->children;
1387 struct hol *hol = make_hol (argp, cluster);
1388 if (child)
1389 while (child->argp)
1390 {
1391 struct hol_cluster *child_cluster =
1392 ((child->group || child->header)
1393 /* Put CHILD->argp within its own cluster. */
1394 ? hol_add_cluster (hol, child->group, child->header,
1395 child - argp->children, cluster, argp)
1396 /* Just merge it into the parent's cluster. */
1397 : cluster);
1398 hol_append (hol, argp_hol (child->argp, child_cluster)) ;
1399 child++;
1400 }
1401 return hol;
1402}
1403
1404/* Calculate how many different levels with alternative args strings exist in
1405 ARGP. */
1406static size_t
1407argp_args_levels (const struct argp *argp)
1408{
1409 size_t levels = 0;
1410 const struct argp_child *child = argp->children;
1411
1412 if (argp->args_doc && strchr (argp->args_doc, '\n'))
1413 levels++;
1414
1415 if (child)
1416 while (child->argp)
1417 levels += argp_args_levels ((child++)->argp);
1418
1419 return levels;
1420}
1421
1422/* Print all the non-option args documented in ARGP to STREAM. Any output is
1423 preceded by a space. LEVELS is a pointer to a byte vector the length
1424 returned by argp_args_levels; it should be initialized to zero, and
1425 updated by this routine for the next call if ADVANCE is true. True is
1426 returned as long as there are more patterns to output. */
1427static int
1428argp_args_usage (const struct argp *argp, const struct argp_state *state,
1429 char **levels, int advance, argp_fmtstream_t stream)
1430{
1431 char *our_level = *levels;
1432 int multiple = 0;
1433 const struct argp_child *child = argp->children;
1434 const char *tdoc = dgettext (argp->argp_domain, argp->args_doc), *nl = 0;
1435 const char *fdoc = filter_doc (tdoc, ARGP_KEY_HELP_ARGS_DOC0x2000006, argp, state);
1436
1437 if (fdoc)
1438 {
1439 const char *cp = fdoc;
1440 nl = __strchrnulstrchrnul (cp, '\n');
1441 if (*nl != '\0')
1442 /* This is a "multi-level" args doc; advance to the correct position
1443 as determined by our state in LEVELS, and update LEVELS. */
1444 {
1445 int i;
1446 multiple = 1;
1447 for (i = 0; i < *our_level; i++)
1448 cp = nl + 1, nl = __strchrnulstrchrnul (cp, '\n');
1449 (*levels)++;
1450 }
1451
1452 /* Manually do line wrapping so that it (probably) won't get wrapped at
1453 any embedded spaces. */
1454 space (stream, 1 + nl - cp);
1455
1456 __argp_fmtstream_writeargp_fmtstream_write (stream, cp, nl - cp);
1457 }
1458 if (fdoc && fdoc != tdoc)
1459 free ((char *)fdoc); /* Free user's modified doc string. */
1460
1461 if (child)
1462 while (child->argp)
1463 advance = !argp_args_usage ((child++)->argp, state, levels, advance, stream);
1464
1465 if (advance && multiple)
1466 {
1467 /* Need to increment our level. */
1468 if (*nl)
1469 /* There's more we can do here. */
1470 {
1471 (*our_level)++;
1472 advance = 0; /* Our parent shouldn't advance also. */
1473 }
1474 else if (*our_level > 0)
1475 /* We had multiple levels, but used them up; reset to zero. */
1476 *our_level = 0;
1477 }
1478
1479 return !advance;
1480}
1481
1482/* Print the documentation for ARGP to STREAM; if POST is false, then
1483 everything preceeding a '\v' character in the documentation strings (or
1484 the whole string, for those with none) is printed, otherwise, everything
1485 following the '\v' character (nothing for strings without). Each separate
1486 bit of documentation is separated a blank line, and if PRE_BLANK is true,
1487 then the first is as well. If FIRST_ONLY is true, only the first
1488 occurrence is output. Returns true if anything was output. */
1489static int
1490argp_doc (const struct argp *argp, const struct argp_state *state,
1491 int post, int pre_blank, int first_only,
1492 argp_fmtstream_t stream)
1493{
1494 const char *text;
1495 const char *inp_text;
1496 size_t inp_text_len = 0;
1497 const char *trans_text;
1498 void *input = 0;
1499 int anything = 0;
1500 const struct argp_child *child = argp->children;
1501
1502 if (argp->doc)
1503 {
1504 char *vt = strchr (argp->doc, '\v');
1505 if (vt)
1506 {
1507 if (post)
1508 inp_text = vt + 1;
1509 else
1510 {
1511 inp_text_len = vt - argp->doc;
1512 inp_text = __strndupstrndup (argp->doc, inp_text_len);
1513 }
1514 }
1515 else
1516 inp_text = post ? 0 : argp->doc;
1517 trans_text = inp_text ? dgettext (argp->argp_domain, inp_text) : NULL((void*)0);
1518 }
1519 else
1520 trans_text = inp_text = 0;
1521
1522 if (argp->help_filter)
1523 /* We have to filter the doc strings. */
1524 {
1525 input = __argp_input_argp_input (argp, state);
1526 text =
1527 (*argp->help_filter) (post
1528 ? ARGP_KEY_HELP_POST_DOC0x2000002
1529 : ARGP_KEY_HELP_PRE_DOC0x2000001,
1530 trans_text, input);
1531 }
1532 else
1533 text = (const char *) trans_text;
1534
1535 if (text)
1536 {
1537 if (pre_blank)
1538 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1539
1540 __argp_fmtstream_putsargp_fmtstream_puts (stream, text);
1541
1542 if (__argp_fmtstream_pointargp_fmtstream_point (stream) > __argp_fmtstream_lmargin (stream)((stream)->lmargin))
1543 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1544
1545 anything = 1;
1546 }
1547
1548 if (text && text != trans_text)
1549 free ((char *) text); /* Free TEXT returned from the help filter. */
1550
1551 if (inp_text && inp_text_len)
1552 free ((char *) inp_text); /* We copied INP_TEXT, so free it now. */
1553
1554 if (post && argp->help_filter)
1555 /* Now see if we have to output an ARGP_KEY_HELP_EXTRA text. */
1556 {
1557 text = (*argp->help_filter) (ARGP_KEY_HELP_EXTRA0x2000004, 0, input);
1558 if (text)
1559 {
1560 if (anything || pre_blank)
1561 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1562 __argp_fmtstream_putsargp_fmtstream_puts (stream, text);
1563 free ((char *) text);
1564 if (__argp_fmtstream_pointargp_fmtstream_point (stream)
1565 > __argp_fmtstream_lmargin (stream)((stream)->lmargin))
1566 __argp_fmtstream_putcargp_fmtstream_putc (stream, '\n');
1567 anything = 1;
1568 }
1569 }
1570
1571 if (child)
1572 while (child->argp && !(first_only && anything))
1573 anything |=
1574 argp_doc ((child++)->argp, state,
1575 post, anything || pre_blank, first_only,
1576 stream);
1577
1578 return anything;
1579}
1580
1581/* Output a usage message for ARGP to STREAM. If called from
1582 argp_state_help, STATE is the relevent parsing state. FLAGS are from the
1583 set ARGP_HELP_*. NAME is what to use wherever a "program name" is
1584 needed. */
1585static void
1586_help (const struct argp *argp, const struct argp_state *state, FILE *stream,
1587 unsigned flags, char *name)
1588{
1589 int anything = 0; /* Whether we've output anything. */
1590 struct hol *hol = 0;
1
Variable 'hol' initialized to a null pointer value
1591 argp_fmtstream_t fs;
1592
1593 if (! stream)
2
Taking false branch
1594 return;
1595
1596#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1597 __flockfileflockfile (stream);
1598#endif
1599
1600 if (! uparams.valid)
3
Taking false branch
1601 fill_in_uparams (state);
1602
1603 fs = __argp_make_fmtstreamargp_make_fmtstream (stream, 0, uparams.rmargin, 0);
1604 if (! fs)
4
Taking false branch
1605 {
1606#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1607 __funlockfilefunlockfile (stream);
1608#endif
1609 return;
1610 }
1611
1612 if (flags & (ARGP_HELP_USAGE0x01 | ARGP_HELP_SHORT_USAGE0x02 | ARGP_HELP_LONG0x08))
5
Taking false branch
1613 {
1614 hol = argp_hol (argp, 0);
1615
1616 /* If present, these options always come last. */
1617 hol_set_group (hol, "help", -1);
1618 hol_set_group (hol, "version", -1);
1619
1620 hol_sort (hol);
1621 }
1622
1623 if (flags & (ARGP_HELP_USAGE0x01 | ARGP_HELP_SHORT_USAGE0x02))
6
Taking true branch
1624 /* Print a short "Usage:" message. */
1625 {
1626 int first_pattern = 1, more_patterns;
1627 size_t num_pattern_levels = argp_args_levels (argp);
1628 char *pattern_levels = alloca__builtin_alloca (num_pattern_levels);
1629
1630 memset (pattern_levels, 0, num_pattern_levels);
1631
1632 do
1633 {
1634 int old_lm;
1635 int old_wm = __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (fs, uparams.usage_indent);
1636 char *levels = pattern_levels;
1637
1638 if (first_pattern)
7
Taking true branch
1639 __argp_fmtstream_printfargp_fmtstream_printf (fs, "%s %s",
1640 dgettext (argp->argp_domain, "Usage:"),
1641 name);
1642 else
1643 __argp_fmtstream_printfargp_fmtstream_printf (fs, "%s %s",
1644 dgettext (argp->argp_domain, " or: "),
1645 name);
1646
1647 /* We set the lmargin as well as the wmargin, because hol_usage
1648 manually wraps options with newline to avoid annoying breaks. */
1649 old_lm = __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (fs, uparams.usage_indent);
1650
1651 if (flags & ARGP_HELP_SHORT_USAGE0x02)
8
Taking true branch
1652 /* Just show where the options go. */
1653 {
1654 if (hol->num_entries > 0)
9
Dereference of null pointer
1655 __argp_fmtstream_putsargp_fmtstream_puts (fs, dgettext (argp->argp_domain,
1656 " [OPTION...]"));
1657 }
1658 else
1659 /* Actually print the options. */
1660 {
1661 hol_usage (hol, fs);
1662 flags |= ARGP_HELP_SHORT_USAGE0x02; /* But only do so once. */
1663 }
1664
1665 more_patterns = argp_args_usage (argp, state, &levels, 1, fs);
1666
1667 __argp_fmtstream_set_wmarginargp_fmtstream_set_wmargin (fs, old_wm);
1668 __argp_fmtstream_set_lmarginargp_fmtstream_set_lmargin (fs, old_lm);
1669
1670 __argp_fmtstream_putcargp_fmtstream_putc (fs, '\n');
1671 anything = 1;
1672
1673 first_pattern = 0;
1674 }
1675 while (more_patterns);
1676 }
1677
1678 if (flags & ARGP_HELP_PRE_DOC0x10)
1679 anything |= argp_doc (argp, state, 0, 0, 1, fs);
1680
1681 if (flags & ARGP_HELP_SEE0x04)
1682 {
1683 __argp_fmtstream_printfargp_fmtstream_printf (fs, dgettext (argp->argp_domain, "\
1684Try '%s --help' or '%s --usage' for more information.\n"),
1685 name, name);
1686 anything = 1;
1687 }
1688
1689 if (flags & ARGP_HELP_LONG0x08)
1690 /* Print a long, detailed help message. */
1691 {
1692 /* Print info about all the options. */
1693 if (hol->num_entries > 0)
1694 {
1695 if (anything)
1696 __argp_fmtstream_putcargp_fmtstream_putc (fs, '\n');
1697 hol_help (hol, state, fs);
1698 anything = 1;
1699 }
1700 }
1701
1702 if (flags & ARGP_HELP_POST_DOC0x20)
1703 /* Print any documentation strings at the end. */
1704 anything |= argp_doc (argp, state, 1, anything, 0, fs);
1705
1706 if ((flags & ARGP_HELP_BUG_ADDR0x40) && argp_program_bug_address)
1707 {
1708 if (anything)
1709 __argp_fmtstream_putcargp_fmtstream_putc (fs, '\n');
1710 __argp_fmtstream_printfargp_fmtstream_printf (fs, dgettext (argp->argp_domain,
1711 "Report bugs to %s.\n"),
1712 argp_program_bug_address);
1713 anything = 1;
1714 }
1715
1716#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1717 __funlockfilefunlockfile (stream);
1718#endif
1719
1720 if (hol)
1721 hol_free (hol);
1722
1723 __argp_fmtstream_freeargp_fmtstream_free (fs);
1724}
1725
1726/* Output a usage message for ARGP to STREAM. FLAGS are from the set
1727 ARGP_HELP_*. NAME is what to use wherever a "program name" is needed. */
1728void __argp_helpargp_help (const struct argp *argp, FILE *stream,
1729 unsigned flags, char *name)
1730{
1731 struct argp_state state;
1732 memset (&state, 0, sizeof state);
1733 state.root_argp = argp;
1734 _help (argp, &state, stream, flags, name);
1735}
1736#ifdef weak_alias
1737weak_alias (__argp_helpargp_help, argp_help)
1738#endif
1739
1740#if ! (defined _LIBC || HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME1)
1741char *
1742__argp_short_program_name (void)
1743{
1744# if HAVE_DECL_PROGRAM_INVOCATION_NAME1
1745 return __argp_base_namelast_component (program_invocation_name);
1746# else
1747 /* FIXME: What now? Miles suggests that it is better to use NULL,
1748 but currently the value is passed on directly to fputs_unlocked,
1749 so that requires more changes. */
1750# if __GNUC__4
1751# warning No reasonable value to return
1752# endif /* __GNUC__ */
1753 return "";
1754# endif
1755}
1756#endif
1757
1758/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
1759 from the set ARGP_HELP_*. */
1760void
1761__argp_state_helpargp_state_help (const struct argp_state *state, FILE *stream, unsigned flags)
1762{
1763 if ((!state || ! (state->flags & ARGP_NO_ERRS0x02)) && stream)
1764 {
1765 if (state && (state->flags & ARGP_LONG_ONLY0x40))
1766 flags |= ARGP_HELP_LONG_ONLY0x80;
1767
1768 _help (state ? state->root_argp : 0, state, stream, flags,
1769 state ? state->name : __argp_short_program_name ()(program_invocation_short_name));
1770
1771 if (!state || ! (state->flags & ARGP_NO_EXIT0x20))
1772 {
1773 if (flags & ARGP_HELP_EXIT_ERR0x100)
1774 exit (argp_err_exit_status);
1775 if (flags & ARGP_HELP_EXIT_OK0x200)
1776 exit (0);
1777 }
1778 }
1779}
1780#ifdef weak_alias
1781weak_alias (__argp_state_helpargp_state_help, argp_state_help)
1782#endif
1783
1784/* If appropriate, print the printf string FMT and following args, preceded
1785 by the program name and ':', to stderr, and followed by a "Try ... --help"
1786 message, then exit (1). */
1787void
1788__argp_errorargp_error (const struct argp_state *state, const char *fmt, ...)
1789{
1790 if (!state || !(state->flags & ARGP_NO_ERRS0x02))
1791 {
1792 FILE *stream = state ? state->err_stream : stderrstderr;
1793
1794 if (stream)
1795 {
1796 va_list ap;
1797
1798#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1799 __flockfileflockfile (stream);
1800#endif
1801
1802 va_start (ap, fmt)__builtin_va_start(ap, fmt);
1803
1804#ifdef USE_IN_LIBIO
1805 if (_IO_fwide (stream, 0) > 0)
1806 {
1807 char *buf;
1808
1809 if (__asprintf (&buf, fmt, ap) < 0)
1810 buf = NULL((void*)0);
1811
1812 __fwprintf (stream, L"%s: %s\n",
1813 state ? state->name : __argp_short_program_name ()(program_invocation_short_name),
1814 buf);
1815
1816 free (buf);
1817 }
1818 else
1819#endif
1820 {
1821 fputs_unlocked (state
1822 ? state->name : __argp_short_program_name ()(program_invocation_short_name),
1823 stream);
1824 putc_unlocked (':', stream);
1825 putc_unlocked (' ', stream);
1826
1827 vfprintfrpl_vfprintf (stream, fmt, ap);
1828
1829 putc_unlocked ('\n', stream);
1830 }
1831
1832 __argp_state_helpargp_state_help (state, stream, ARGP_HELP_STD_ERR(0x04 | 0x100));
1833
1834 va_end (ap)__builtin_va_end(ap);
1835
1836#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1837 __funlockfilefunlockfile (stream);
1838#endif
1839 }
1840 }
1841}
1842#ifdef weak_alias
1843weak_alias (__argp_errorargp_error, argp_error)
1844#endif
1845
1846/* Similar to the standard gnu error-reporting function error(), but will
1847 respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
1848 to STATE->err_stream. This is useful for argument parsing code that is
1849 shared between program startup (when exiting is desired) and runtime
1850 option parsing (when typically an error code is returned instead). The
1851 difference between this function and argp_error is that the latter is for
1852 *parsing errors*, and the former is for other problems that occur during
1853 parsing but don't reflect a (syntactic) problem with the input. */
1854void
1855__argp_failureargp_failure (const struct argp_state *state, int status, int errnum,
1856 const char *fmt, ...)
1857{
1858 if (!state || !(state->flags & ARGP_NO_ERRS0x02))
1859 {
1860 FILE *stream = state ? state->err_stream : stderrstderr;
1861
1862 if (stream)
1863 {
1864#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1865 __flockfileflockfile (stream);
1866#endif
1867
1868#ifdef USE_IN_LIBIO
1869 if (_IO_fwide (stream, 0) > 0)
1870 __fwprintf (stream, L"%s",
1871 state ? state->name : __argp_short_program_name ()(program_invocation_short_name));
1872 else
1873#endif
1874 fputs_unlocked (state
1875 ? state->name : __argp_short_program_name ()(program_invocation_short_name),
1876 stream);
1877
1878 if (fmt)
1879 {
1880 va_list ap;
1881
1882 va_start (ap, fmt)__builtin_va_start(ap, fmt);
1883#ifdef USE_IN_LIBIO
1884 if (_IO_fwide (stream, 0) > 0)
1885 {
1886 char *buf;
1887
1888 if (__asprintf (&buf, fmt, ap) < 0)
1889 buf = NULL((void*)0);
1890
1891 __fwprintf (stream, L": %s", buf);
1892
1893 free (buf);
1894 }
1895 else
1896#endif
1897 {
1898 putc_unlocked (':', stream);
1899 putc_unlocked (' ', stream);
1900
1901 vfprintfrpl_vfprintf (stream, fmt, ap);
1902 }
1903
1904 va_end (ap)__builtin_va_end(ap);
1905 }
1906
1907 if (errnum)
1908 {
1909 char buf[200];
1910
1911#ifdef USE_IN_LIBIO
1912 if (_IO_fwide (stream, 0) > 0)
1913 __fwprintf (stream, L": %s",
1914 __strerror_rstrerror_r (errnum, buf, sizeof (buf)));
1915 else
1916#endif
1917 {
1918 char const *s = NULL((void*)0);
1919 putc_unlocked (':', stream);
1920 putc_unlocked (' ', stream);
1921#if _LIBC || (HAVE_DECL_STRERROR_R1 && STRERROR_R_CHAR_P1 && !defined strerror_r)
1922 s = __strerror_rstrerror_r (errnum, buf, sizeof buf);
1923#elif HAVE_DECL_STRERROR_R1
1924 if (__strerror_rstrerror_r (errnum, buf, sizeof buf) == 0)
1925 s = buf;
1926#endif
1927#if !_LIBC
1928 if (! s && ! (s = strerrorrpl_strerror (errnum)))
1929 s = dgettext (state->root_argp->argp_domain,
1930 "Unknown system error");
1931#endif
1932 fputs (s, stream);
1933 }
1934 }
1935
1936#ifdef USE_IN_LIBIO
1937 if (_IO_fwide (stream, 0) > 0)
1938 putwc_unlocked (L'\n', stream);
1939 else
1940#endif
1941 putc_unlocked ('\n', stream);
1942
1943#if _LIBC || (HAVE_FLOCKFILE1 && HAVE_FUNLOCKFILE1)
1944 __funlockfilefunlockfile (stream);
1945#endif
1946
1947 if (status && (!state || !(state->flags & ARGP_NO_EXIT0x20)))
1948 exit (status);
1949 }
1950 }
1951}
1952#ifdef weak_alias
1953weak_alias (__argp_failureargp_failure, argp_failure)
1954#endif