mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 18:43:32 +08:00
1893 lines
54 KiB
C
1893 lines
54 KiB
C
/* Hierarchial argument parsing help output
|
||
Copyright (C) 1995-2012 Free Software Foundation, Inc.
|
||
This file is part of the GNU C Library.
|
||
Written by Miles Bader <miles@gnu.ai.mit.edu>.
|
||
|
||
The GNU C Library is free software; you can redistribute it and/or
|
||
modify it under the terms of the GNU Lesser General Public
|
||
License as published by the Free Software Foundation; either
|
||
version 2.1 of the License, or (at your option) any later version.
|
||
|
||
The GNU C Library is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||
Lesser General Public License for more details.
|
||
|
||
You should have received a copy of the GNU Lesser General Public
|
||
License along with the GNU C Library; if not, see
|
||
<http://www.gnu.org/licenses/>. */
|
||
|
||
#ifndef _GNU_SOURCE
|
||
# define _GNU_SOURCE 1
|
||
#endif
|
||
|
||
#ifdef HAVE_CONFIG_H
|
||
#include <config.h>
|
||
#endif
|
||
|
||
/* AIX requires this to be the first thing in the file. */
|
||
#ifndef __GNUC__
|
||
# if HAVE_ALLOCA_H || defined _LIBC
|
||
# include <alloca.h>
|
||
# else
|
||
# ifdef _AIX
|
||
#pragma alloca
|
||
# else
|
||
# ifndef alloca /* predefined by HP cc +Olibcalls */
|
||
char *alloca ();
|
||
# endif
|
||
# endif
|
||
# endif
|
||
#endif
|
||
|
||
#include <stdbool.h>
|
||
#include <stddef.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include <assert.h>
|
||
#include <stdarg.h>
|
||
#include <ctype.h>
|
||
#include <limits.h>
|
||
#ifdef _LIBC
|
||
# include <../libio/libioP.h>
|
||
# include <wchar.h>
|
||
#endif
|
||
|
||
#ifndef _
|
||
/* This is for other GNU distributions with internationalized messages. */
|
||
# if defined HAVE_LIBINTL_H || defined _LIBC
|
||
# include <libintl.h>
|
||
# ifdef _LIBC
|
||
# undef dgettext
|
||
# define dgettext(domain, msgid) \
|
||
__dcgettext (domain, msgid, LC_MESSAGES)
|
||
# endif
|
||
# else
|
||
# define dgettext(domain, msgid) (msgid)
|
||
# endif
|
||
#endif
|
||
|
||
#ifndef _LIBC
|
||
# if HAVE_STRERROR_R
|
||
# if !HAVE_DECL_STRERROR_R
|
||
char *strerror_r (int errnum, char *buf, size_t buflen);
|
||
# endif
|
||
# else
|
||
# if !HAVE_DECL_STRERROR
|
||
char *strerror (int errnum);
|
||
# endif
|
||
# endif
|
||
#endif
|
||
|
||
#include "argp.h"
|
||
#include "argp-fmtstream.h"
|
||
#include "argp-namefrob.h"
|
||
|
||
#ifndef SIZE_MAX
|
||
# define SIZE_MAX ((size_t) -1)
|
||
#endif
|
||
|
||
/* User-selectable (using an environment variable) formatting parameters.
|
||
|
||
These may be specified in an environment variable called `ARGP_HELP_FMT',
|
||
with a contents like: VAR1=VAL1,VAR2=VAL2,BOOLVAR2,no-BOOLVAR2
|
||
Where VALn must be a positive integer. The list of variables is in the
|
||
UPARAM_NAMES vector, below. */
|
||
|
||
/* Default parameters. */
|
||
#define DUP_ARGS 0 /* True if option argument can be duplicated. */
|
||
#define DUP_ARGS_NOTE 1 /* True to print a note about duplicate args. */
|
||
#define SHORT_OPT_COL 2 /* column in which short options start */
|
||
#define LONG_OPT_COL 6 /* column in which long options start */
|
||
#define DOC_OPT_COL 2 /* column in which doc options start */
|
||
#define OPT_DOC_COL 29 /* column in which option text starts */
|
||
#define HEADER_COL 1 /* column in which group headers are printed */
|
||
#define USAGE_INDENT 12 /* indentation of wrapped usage lines */
|
||
#define RMARGIN 79 /* right margin used for wrapping */
|
||
|
||
/* User-selectable (using an environment variable) formatting parameters.
|
||
They must all be of type `int' for the parsing code to work. */
|
||
struct uparams
|
||
{
|
||
/* If true, arguments for an option are shown with both short and long
|
||
options, even when a given option has both, e.g. `-x ARG, --longx=ARG'.
|
||
If false, then if an option has both, the argument is only shown with
|
||
the long one, e.g., `-x, --longx=ARG', and a message indicating that
|
||
this really means both is printed below the options. */
|
||
int dup_args;
|
||
|
||
/* This is true if when DUP_ARGS is false, and some duplicate arguments have
|
||
been suppressed, an explanatory message should be printed. */
|
||
int dup_args_note;
|
||
|
||
/* Various output columns. */
|
||
int short_opt_col;
|
||
int long_opt_col;
|
||
int doc_opt_col;
|
||
int opt_doc_col;
|
||
int header_col;
|
||
int usage_indent;
|
||
int rmargin;
|
||
};
|
||
|
||
/* This is a global variable, as user options are only ever read once. */
|
||
static struct uparams uparams = {
|
||
DUP_ARGS, DUP_ARGS_NOTE,
|
||
SHORT_OPT_COL, LONG_OPT_COL, DOC_OPT_COL, OPT_DOC_COL, HEADER_COL,
|
||
USAGE_INDENT, RMARGIN
|
||
};
|
||
|
||
/* A particular uparam, and what the user name is. */
|
||
struct uparam_name
|
||
{
|
||
const char name[14]; /* User name. */
|
||
bool is_bool; /* Whether it's `boolean'. */
|
||
uint8_t uparams_offs; /* Location of the (int) field in UPARAMS. */
|
||
};
|
||
|
||
/* The name-field mappings we know about. */
|
||
static const struct uparam_name uparam_names[] =
|
||
{
|
||
{ "dup-args", true, offsetof (struct uparams, dup_args) },
|
||
{ "dup-args-note", true, offsetof (struct uparams, dup_args_note) },
|
||
{ "short-opt-col", false, offsetof (struct uparams, short_opt_col) },
|
||
{ "long-opt-col", false, offsetof (struct uparams, long_opt_col) },
|
||
{ "doc-opt-col", false, offsetof (struct uparams, doc_opt_col) },
|
||
{ "opt-doc-col", false, offsetof (struct uparams, opt_doc_col) },
|
||
{ "header-col", false, offsetof (struct uparams, header_col) },
|
||
{ "usage-indent", false, offsetof (struct uparams, usage_indent) },
|
||
{ "rmargin", false, offsetof (struct uparams, rmargin) }
|
||
};
|
||
#define nuparam_names (sizeof (uparam_names) / sizeof (uparam_names[0]))
|
||
|
||
/* Read user options from the environment, and fill in UPARAMS appropiately. */
|
||
static void
|
||
fill_in_uparams (const struct argp_state *state)
|
||
{
|
||
const char *var = getenv ("ARGP_HELP_FMT");
|
||
|
||
#define SKIPWS(p) do { while (isspace (*p)) p++; } while (0);
|
||
|
||
if (var)
|
||
/* Parse var. */
|
||
while (*var)
|
||
{
|
||
SKIPWS (var);
|
||
|
||
if (isalpha (*var))
|
||
{
|
||
size_t var_len;
|
||
const struct uparam_name *un;
|
||
int unspec = 0, val = 0;
|
||
const char *arg = var;
|
||
|
||
while (isalnum (*arg) || *arg == '-' || *arg == '_')
|
||
arg++;
|
||
var_len = arg - var;
|
||
|
||
SKIPWS (arg);
|
||
|
||
if (*arg == '\0' || *arg == ',')
|
||
unspec = 1;
|
||
else if (*arg == '=')
|
||
{
|
||
arg++;
|
||
SKIPWS (arg);
|
||
}
|
||
|
||
if (unspec)
|
||
{
|
||
if (var[0] == 'n' && var[1] == 'o' && var[2] == '-')
|
||
{
|
||
val = 0;
|
||
var += 3;
|
||
var_len -= 3;
|
||
}
|
||
else
|
||
val = 1;
|
||
}
|
||
else if (isdigit (*arg))
|
||
{
|
||
val = atoi (arg);
|
||
while (isdigit (*arg))
|
||
arg++;
|
||
SKIPWS (arg);
|
||
}
|
||
|
||
un = uparam_names;
|
||
size_t u;
|
||
for (u = 0; u < nuparam_names; ++un, ++u)
|
||
if (strlen (un->name) == var_len
|
||
&& strncmp (var, un->name, var_len) == 0)
|
||
{
|
||
if (unspec && !un->is_bool)
|
||
__argp_failure (state, 0, 0,
|
||
dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain,
|
||
"\
|
||
%.*s: ARGP_HELP_FMT parameter requires a value"),
|
||
(int) var_len, var);
|
||
else
|
||
*(int *)((char *)&uparams + un->uparams_offs) = val;
|
||
break;
|
||
}
|
||
if (u == nuparam_names)
|
||
__argp_failure (state, 0, 0,
|
||
dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain, "\
|
||
%.*s: Unknown ARGP_HELP_FMT parameter"),
|
||
(int) var_len, var);
|
||
|
||
var = arg;
|
||
if (*var == ',')
|
||
var++;
|
||
}
|
||
else if (*var)
|
||
{
|
||
__argp_failure (state, 0, 0,
|
||
dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain,
|
||
"Garbage in ARGP_HELP_FMT: %s"), var);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Returns true if OPT hasn't been marked invisible. Visibility only affects
|
||
whether OPT is displayed or used in sorting, not option shadowing. */
|
||
#define ovisible(opt) (! ((opt)->flags & OPTION_HIDDEN))
|
||
|
||
/* Returns true if OPT is an alias for an earlier option. */
|
||
#define oalias(opt) ((opt)->flags & OPTION_ALIAS)
|
||
|
||
/* Returns true if OPT is an documentation-only entry. */
|
||
#define odoc(opt) ((opt)->flags & OPTION_DOC)
|
||
|
||
/* Returns true if OPT is the end-of-list marker for a list of options. */
|
||
#define oend(opt) __option_is_end (opt)
|
||
|
||
/* Returns true if OPT has a short option. */
|
||
#define oshort(opt) __option_is_short (opt)
|
||
|
||
/*
|
||
The help format for a particular option is like:
|
||
|
||
-xARG, -yARG, --long1=ARG, --long2=ARG Documentation...
|
||
|
||
Where ARG will be omitted if there's no argument, for this option, or
|
||
will be surrounded by "[" and "]" appropiately if the argument is
|
||
optional. The documentation string is word-wrapped appropiately, and if
|
||
the list of options is long enough, it will be started on a separate line.
|
||
If there are no short options for a given option, the first long option is
|
||
indented slighly in a way that's supposed to make most long options appear
|
||
to be in a separate column.
|
||
|
||
For example, the following output (from ps):
|
||
|
||
-p PID, --pid=PID List the process PID
|
||
--pgrp=PGRP List processes in the process group PGRP
|
||
-P, -x, --no-parent Include processes without parents
|
||
-Q, --all-fields Don't elide unusable fields (normally if there's
|
||
some reason ps can't print a field for any
|
||
process, it's removed from the output entirely)
|
||
-r, --reverse, --gratuitously-long-reverse-option
|
||
Reverse the order of any sort
|
||
--session[=SID] Add the processes from the session SID (which
|
||
defaults to the sid of the current process)
|
||
|
||
Here are some more options:
|
||
-f ZOT, --foonly=ZOT Glork a foonly
|
||
-z, --zaza Snit a zar
|
||
|
||
-?, --help Give this help list
|
||
--usage Give a short usage message
|
||
-V, --version Print program version
|
||
|
||
The struct argp_option array for the above could look like:
|
||
|
||
{
|
||
{"pid", 'p', "PID", 0, "List the process PID"},
|
||
{"pgrp", OPT_PGRP, "PGRP", 0, "List processes in the process group PGRP"},
|
||
{"no-parent", 'P', 0, 0, "Include processes without parents"},
|
||
{0, 'x', 0, OPTION_ALIAS},
|
||
{"all-fields",'Q', 0, 0, "Don't elide unusable fields (normally"
|
||
" if there's some reason ps can't"
|
||
" print a field for any process, it's"
|
||
" removed from the output entirely)" },
|
||
{"reverse", 'r', 0, 0, "Reverse the order of any sort"},
|
||
{"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS},
|
||
{"session", OPT_SESS, "SID", OPTION_ARG_OPTIONAL,
|
||
"Add the processes from the session"
|
||
" SID (which defaults to the sid of"
|
||
" the current process)" },
|
||
|
||
{0,0,0,0, "Here are some more options:"},
|
||
{"foonly", 'f', "ZOT", 0, "Glork a foonly"},
|
||
{"zaza", 'z', 0, 0, "Snit a zar"},
|
||
|
||
{0}
|
||
}
|
||
|
||
Note that the last three options are automatically supplied by argp_parse,
|
||
unless you tell it not to with ARGP_NO_HELP.
|
||
|
||
*/
|
||
|
||
/* Returns true if CH occurs between BEG and END. */
|
||
static int
|
||
find_char (char ch, char *beg, char *end)
|
||
{
|
||
while (beg < end)
|
||
if (*beg == ch)
|
||
return 1;
|
||
else
|
||
beg++;
|
||
return 0;
|
||
}
|
||
|
||
struct hol_cluster; /* fwd decl */
|
||
|
||
struct hol_entry
|
||
{
|
||
/* First option. */
|
||
const struct argp_option *opt;
|
||
/* Number of options (including aliases). */
|
||
unsigned num;
|
||
|
||
/* A pointers into the HOL's short_options field, to the first short option
|
||
letter for this entry. The order of the characters following this point
|
||
corresponds to the order of options pointed to by OPT, and there are at
|
||
most NUM. A short option recorded in a option following OPT is only
|
||
valid if it occurs in the right place in SHORT_OPTIONS (otherwise it's
|
||
probably been shadowed by some other entry). */
|
||
char *short_options;
|
||
|
||
/* Entries are sorted by their group first, in the order:
|
||
1, 2, ..., n, 0, -m, ..., -2, -1
|
||
and then alphabetically within each group. The default is 0. */
|
||
int group;
|
||
|
||
/* The cluster of options this entry belongs to, or 0 if none. */
|
||
struct hol_cluster *cluster;
|
||
|
||
/* The argp from which this option came. */
|
||
const struct argp *argp;
|
||
};
|
||
|
||
/* A cluster of entries to reflect the argp tree structure. */
|
||
struct hol_cluster
|
||
{
|
||
/* A descriptive header printed before options in this cluster. */
|
||
const char *header;
|
||
|
||
/* Used to order clusters within the same group with the same parent,
|
||
according to the order in which they occurred in the parent argp's child
|
||
list. */
|
||
int index;
|
||
|
||
/* How to sort this cluster with respect to options and other clusters at the
|
||
same depth (clusters always follow options in the same group). */
|
||
int group;
|
||
|
||
/* The cluster to which this cluster belongs, or 0 if it's at the base
|
||
level. */
|
||
struct hol_cluster *parent;
|
||
|
||
/* The argp from which this cluster is (eventually) derived. */
|
||
const struct argp *argp;
|
||
|
||
/* The distance this cluster is from the root. */
|
||
int depth;
|
||
|
||
/* Clusters in a given hol are kept in a linked list, to make freeing them
|
||
possible. */
|
||
struct hol_cluster *next;
|
||
};
|
||
|
||
/* A list of options for help. */
|
||
struct hol
|
||
{
|
||
/* An array of hol_entry's. */
|
||
struct hol_entry *entries;
|
||
/* The number of entries in this hol. If this field is zero, the others
|
||
are undefined. */
|
||
unsigned num_entries;
|
||
|
||
/* A string containing all short options in this HOL. Each entry contains
|
||
pointers into this string, so the order can't be messed with blindly. */
|
||
char *short_options;
|
||
|
||
/* Clusters of entries in this hol. */
|
||
struct hol_cluster *clusters;
|
||
};
|
||
|
||
/* Create a struct hol from the options in ARGP. CLUSTER is the
|
||
hol_cluster in which these entries occur, or 0, if at the root. */
|
||
static struct hol *
|
||
make_hol (const struct argp *argp, struct hol_cluster *cluster)
|
||
{
|
||
char *so;
|
||
const struct argp_option *o;
|
||
const struct argp_option *opts = argp->options;
|
||
struct hol_entry *entry;
|
||
unsigned num_short_options = 0;
|
||
struct hol *hol = malloc (sizeof (struct hol));
|
||
|
||
assert (hol);
|
||
|
||
hol->num_entries = 0;
|
||
hol->clusters = 0;
|
||
|
||
if (opts)
|
||
{
|
||
int cur_group = 0;
|
||
|
||
/* The first option must not be an alias. */
|
||
assert (! oalias (opts));
|
||
|
||
/* Calculate the space needed. */
|
||
for (o = opts; ! oend (o); o++)
|
||
{
|
||
if (! oalias (o))
|
||
hol->num_entries++;
|
||
if (oshort (o))
|
||
num_short_options++; /* This is an upper bound. */
|
||
}
|
||
|
||
hol->entries = malloc (sizeof (struct hol_entry) * hol->num_entries);
|
||
hol->short_options = malloc (num_short_options + 1);
|
||
|
||
assert (hol->entries && hol->short_options);
|
||
#if SIZE_MAX <= UINT_MAX
|
||
assert (hol->num_entries <= SIZE_MAX / sizeof (struct hol_entry));
|
||
#endif
|
||
|
||
/* Fill in the entries. */
|
||
so = hol->short_options;
|
||
for (o = opts, entry = hol->entries; ! oend (o); entry++)
|
||
{
|
||
entry->opt = o;
|
||
entry->num = 0;
|
||
entry->short_options = so;
|
||
entry->group = cur_group =
|
||
o->group
|
||
? o->group
|
||
: ((!o->name && !o->key)
|
||
? cur_group + 1
|
||
: cur_group);
|
||
entry->cluster = cluster;
|
||
entry->argp = argp;
|
||
|
||
do
|
||
{
|
||
entry->num++;
|
||
if (oshort (o) && ! find_char (o->key, hol->short_options, so))
|
||
/* O has a valid short option which hasn't already been used.*/
|
||
*so++ = o->key;
|
||
o++;
|
||
}
|
||
while (! oend (o) && oalias (o));
|
||
}
|
||
*so = '\0'; /* null terminated so we can find the length */
|
||
}
|
||
|
||
return hol;
|
||
}
|
||
|
||
/* Add a new cluster to HOL, with the given GROUP and HEADER (taken from the
|
||
associated argp child list entry), INDEX, and PARENT, and return a pointer
|
||
to it. ARGP is the argp that this cluster results from. */
|
||
static struct hol_cluster *
|
||
hol_add_cluster (struct hol *hol, int group, const char *header, int index,
|
||
struct hol_cluster *parent, const struct argp *argp)
|
||
{
|
||
struct hol_cluster *cl = malloc (sizeof (struct hol_cluster));
|
||
if (cl)
|
||
{
|
||
cl->group = group;
|
||
cl->header = header;
|
||
|
||
cl->index = index;
|
||
cl->parent = parent;
|
||
cl->argp = argp;
|
||
cl->depth = parent ? parent->depth + 1 : 0;
|
||
|
||
cl->next = hol->clusters;
|
||
hol->clusters = cl;
|
||
}
|
||
return cl;
|
||
}
|
||
|
||
/* Free HOL and any resources it uses. */
|
||
static void
|
||
hol_free (struct hol *hol)
|
||
{
|
||
struct hol_cluster *cl = hol->clusters;
|
||
|
||
while (cl)
|
||
{
|
||
struct hol_cluster *next = cl->next;
|
||
free (cl);
|
||
cl = next;
|
||
}
|
||
|
||
if (hol->num_entries > 0)
|
||
{
|
||
free (hol->entries);
|
||
free (hol->short_options);
|
||
}
|
||
|
||
free (hol);
|
||
}
|
||
|
||
static int
|
||
hol_entry_short_iterate (const struct hol_entry *entry,
|
||
int (*func)(const struct argp_option *opt,
|
||
const struct argp_option *real,
|
||
const char *domain, void *cookie),
|
||
const char *domain, void *cookie)
|
||
{
|
||
unsigned nopts;
|
||
int val = 0;
|
||
const struct argp_option *opt, *real = entry->opt;
|
||
char *so = entry->short_options;
|
||
|
||
for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
|
||
if (oshort (opt) && *so == opt->key)
|
||
{
|
||
if (!oalias (opt))
|
||
real = opt;
|
||
if (ovisible (opt))
|
||
val = (*func)(opt, real, domain, cookie);
|
||
so++;
|
||
}
|
||
|
||
return val;
|
||
}
|
||
|
||
static inline int
|
||
__attribute__ ((always_inline))
|
||
hol_entry_long_iterate (const struct hol_entry *entry,
|
||
int (*func)(const struct argp_option *opt,
|
||
const struct argp_option *real,
|
||
const char *domain, void *cookie),
|
||
const char *domain, void *cookie)
|
||
{
|
||
unsigned nopts;
|
||
int val = 0;
|
||
const struct argp_option *opt, *real = entry->opt;
|
||
|
||
for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
|
||
if (opt->name)
|
||
{
|
||
if (!oalias (opt))
|
||
real = opt;
|
||
if (ovisible (opt))
|
||
val = (*func)(opt, real, domain, cookie);
|
||
}
|
||
|
||
return val;
|
||
}
|
||
|
||
/* Iterator that returns true for the first short option. */
|
||
static inline int
|
||
until_short (const struct argp_option *opt, const struct argp_option *real,
|
||
const char *domain, void *cookie)
|
||
{
|
||
return oshort (opt) ? opt->key : 0;
|
||
}
|
||
|
||
/* Returns the first valid short option in ENTRY, or 0 if there is none. */
|
||
static char
|
||
hol_entry_first_short (const struct hol_entry *entry)
|
||
{
|
||
return hol_entry_short_iterate (entry, until_short,
|
||
entry->argp->argp_domain, 0);
|
||
}
|
||
|
||
/* Returns the first valid long option in ENTRY, or 0 if there is none. */
|
||
static const char *
|
||
hol_entry_first_long (const struct hol_entry *entry)
|
||
{
|
||
const struct argp_option *opt;
|
||
unsigned num;
|
||
for (opt = entry->opt, num = entry->num; num > 0; opt++, num--)
|
||
if (opt->name && ovisible (opt))
|
||
return opt->name;
|
||
return 0;
|
||
}
|
||
|
||
/* Returns the entry in HOL with the long option name NAME, or 0 if there is
|
||
none. */
|
||
static struct hol_entry *
|
||
hol_find_entry (struct hol *hol, const char *name)
|
||
{
|
||
struct hol_entry *entry = hol->entries;
|
||
unsigned num_entries = hol->num_entries;
|
||
|
||
while (num_entries-- > 0)
|
||
{
|
||
const struct argp_option *opt = entry->opt;
|
||
unsigned num_opts = entry->num;
|
||
|
||
while (num_opts-- > 0)
|
||
if (opt->name && ovisible (opt) && strcmp (opt->name, name) == 0)
|
||
return entry;
|
||
else
|
||
opt++;
|
||
|
||
entry++;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* If an entry with the long option NAME occurs in HOL, set it's special
|
||
sort position to GROUP. */
|
||
static void
|
||
hol_set_group (struct hol *hol, const char *name, int group)
|
||
{
|
||
struct hol_entry *entry = hol_find_entry (hol, name);
|
||
if (entry)
|
||
entry->group = group;
|
||
}
|
||
|
||
/* Order by group: 0, 1, 2, ..., n, -m, ..., -2, -1.
|
||
EQ is what to return if GROUP1 and GROUP2 are the same. */
|
||
static int
|
||
group_cmp (int group1, int group2, int eq)
|
||
{
|
||
if (group1 == group2)
|
||
return eq;
|
||
else if ((group1 < 0 && group2 < 0) || (group1 >= 0 && group2 >= 0))
|
||
return group1 - group2;
|
||
else
|
||
return group2 - group1;
|
||
}
|
||
|
||
/* Compare clusters CL1 & CL2 by the order that they should appear in
|
||
output. */
|
||
static int
|
||
hol_cluster_cmp (const struct hol_cluster *cl1, const struct hol_cluster *cl2)
|
||
{
|
||
/* If one cluster is deeper than the other, use its ancestor at the same
|
||
level, so that finding the common ancestor is straightforward. */
|
||
while (cl1->depth > cl2->depth)
|
||
cl1 = cl1->parent;
|
||
while (cl2->depth > cl1->depth)
|
||
cl2 = cl2->parent;
|
||
|
||
/* Now reduce both clusters to their ancestors at the point where both have
|
||
a common parent; these can be directly compared. */
|
||
while (cl1->parent != cl2->parent)
|
||
cl1 = cl1->parent, cl2 = cl2->parent;
|
||
|
||
return group_cmp (cl1->group, cl2->group, cl2->index - cl1->index);
|
||
}
|
||
|
||
/* Return the ancestor of CL that's just below the root (i.e., has a parent
|
||
of 0). */
|
||
static struct hol_cluster *
|
||
hol_cluster_base (struct hol_cluster *cl)
|
||
{
|
||
while (cl->parent)
|
||
cl = cl->parent;
|
||
return cl;
|
||
}
|
||
|
||
/* Return true if CL1 is a child of CL2. */
|
||
static int
|
||
hol_cluster_is_child (const struct hol_cluster *cl1,
|
||
const struct hol_cluster *cl2)
|
||
{
|
||
while (cl1 && cl1 != cl2)
|
||
cl1 = cl1->parent;
|
||
return cl1 == cl2;
|
||
}
|
||
|
||
/* Given the name of a OPTION_DOC option, modifies NAME to start at the tail
|
||
that should be used for comparisons, and returns true iff it should be
|
||
treated as a non-option. */
|
||
static int
|
||
canon_doc_option (const char **name)
|
||
{
|
||
int non_opt;
|
||
/* Skip initial whitespace. */
|
||
while (isspace (**name))
|
||
(*name)++;
|
||
/* Decide whether this looks like an option (leading `-') or not. */
|
||
non_opt = (**name != '-');
|
||
/* Skip until part of name used for sorting. */
|
||
while (**name && !isalnum (**name))
|
||
(*name)++;
|
||
return non_opt;
|
||
}
|
||
|
||
/* Order ENTRY1 & ENTRY2 by the order which they should appear in a help
|
||
listing. */
|
||
static int
|
||
hol_entry_cmp (const struct hol_entry *entry1,
|
||
const struct hol_entry *entry2)
|
||
{
|
||
/* The group numbers by which the entries should be ordered; if either is
|
||
in a cluster, then this is just the group within the cluster. */
|
||
int group1 = entry1->group, group2 = entry2->group;
|
||
|
||
if (entry1->cluster != entry2->cluster)
|
||
{
|
||
/* The entries are not within the same cluster, so we can't compare them
|
||
directly, we have to use the appropiate clustering level too. */
|
||
if (! entry1->cluster)
|
||
/* ENTRY1 is at the `base level', not in a cluster, so we have to
|
||
compare it's group number with that of the base cluster in which
|
||
ENTRY2 resides. Note that if they're in the same group, the
|
||
clustered option always comes laster. */
|
||
return group_cmp (group1, hol_cluster_base (entry2->cluster)->group, -1);
|
||
else if (! entry2->cluster)
|
||
/* Likewise, but ENTRY2's not in a cluster. */
|
||
return group_cmp (hol_cluster_base (entry1->cluster)->group, group2, 1);
|
||
else
|
||
/* Both entries are in clusters, we can just compare the clusters. */
|
||
return hol_cluster_cmp (entry1->cluster, entry2->cluster);
|
||
}
|
||
else if (group1 == group2)
|
||
/* The entries are both in the same cluster and group, so compare them
|
||
alphabetically. */
|
||
{
|
||
int short1 = hol_entry_first_short (entry1);
|
||
int short2 = hol_entry_first_short (entry2);
|
||
int doc1 = odoc (entry1->opt);
|
||
int doc2 = odoc (entry2->opt);
|
||
const char *long1 = hol_entry_first_long (entry1);
|
||
const char *long2 = hol_entry_first_long (entry2);
|
||
|
||
if (doc1)
|
||
doc1 = long1 != NULL && canon_doc_option (&long1);
|
||
if (doc2)
|
||
doc2 = long2 != NULL && canon_doc_option (&long2);
|
||
|
||
if (doc1 != doc2)
|
||
/* `documentation' options always follow normal options (or
|
||
documentation options that *look* like normal options). */
|
||
return doc1 - doc2;
|
||
else if (!short1 && !short2 && long1 && long2)
|
||
/* Only long options. */
|
||
return __strcasecmp (long1, long2);
|
||
else
|
||
/* Compare short/short, long/short, short/long, using the first
|
||
character of long options. Entries without *any* valid
|
||
options (such as options with OPTION_HIDDEN set) will be put
|
||
first, but as they're not displayed, it doesn't matter where
|
||
they are. */
|
||
{
|
||
char first1 = short1 ? short1 : long1 ? *long1 : 0;
|
||
char first2 = short2 ? short2 : long2 ? *long2 : 0;
|
||
#ifdef _tolower
|
||
int lower_cmp = _tolower (first1) - _tolower (first2);
|
||
#else
|
||
int lower_cmp = tolower (first1) - tolower (first2);
|
||
#endif
|
||
/* Compare ignoring case, except when the options are both the
|
||
same letter, in which case lower-case always comes first. */
|
||
return lower_cmp ? lower_cmp : first2 - first1;
|
||
}
|
||
}
|
||
else
|
||
/* Within the same cluster, but not the same group, so just compare
|
||
groups. */
|
||
return group_cmp (group1, group2, 0);
|
||
}
|
||
|
||
/* Version of hol_entry_cmp with correct signature for qsort. */
|
||
static int
|
||
hol_entry_qcmp (const void *entry1_v, const void *entry2_v)
|
||
{
|
||
return hol_entry_cmp (entry1_v, entry2_v);
|
||
}
|
||
|
||
/* Sort HOL by group and alphabetically by option name (with short options
|
||
taking precedence over long). Since the sorting is for display purposes
|
||
only, the shadowing of options isn't effected. */
|
||
static void
|
||
hol_sort (struct hol *hol)
|
||
{
|
||
if (hol->num_entries > 0)
|
||
qsort (hol->entries, hol->num_entries, sizeof (struct hol_entry),
|
||
hol_entry_qcmp);
|
||
}
|
||
|
||
/* Append MORE to HOL, destroying MORE in the process. Options in HOL shadow
|
||
any in MORE with the same name. */
|
||
static void
|
||
hol_append (struct hol *hol, struct hol *more)
|
||
{
|
||
struct hol_cluster **cl_end = &hol->clusters;
|
||
|
||
/* Steal MORE's cluster list, and add it to the end of HOL's. */
|
||
while (*cl_end)
|
||
cl_end = &(*cl_end)->next;
|
||
*cl_end = more->clusters;
|
||
more->clusters = 0;
|
||
|
||
/* Merge entries. */
|
||
if (more->num_entries > 0)
|
||
{
|
||
if (hol->num_entries == 0)
|
||
{
|
||
hol->num_entries = more->num_entries;
|
||
hol->entries = more->entries;
|
||
hol->short_options = more->short_options;
|
||
more->num_entries = 0; /* Mark MORE's fields as invalid. */
|
||
}
|
||
else
|
||
/* Append the entries in MORE to those in HOL, taking care to only add
|
||
non-shadowed SHORT_OPTIONS values. */
|
||
{
|
||
unsigned left;
|
||
char *so, *more_so;
|
||
struct hol_entry *e;
|
||
unsigned num_entries = hol->num_entries + more->num_entries;
|
||
struct hol_entry *entries =
|
||
malloc (num_entries * sizeof (struct hol_entry));
|
||
unsigned hol_so_len = strlen (hol->short_options);
|
||
char *short_options =
|
||
malloc (hol_so_len + strlen (more->short_options) + 1);
|
||
|
||
assert (entries && short_options);
|
||
#if SIZE_MAX <= UINT_MAX
|
||
assert (num_entries <= SIZE_MAX / sizeof (struct hol_entry));
|
||
#endif
|
||
|
||
__mempcpy (__mempcpy (entries, hol->entries,
|
||
hol->num_entries * sizeof (struct hol_entry)),
|
||
more->entries,
|
||
more->num_entries * sizeof (struct hol_entry));
|
||
|
||
__mempcpy (short_options, hol->short_options, hol_so_len);
|
||
|
||
/* Fix up the short options pointers from HOL. */
|
||
for (e = entries, left = hol->num_entries; left > 0; e++, left--)
|
||
e->short_options += (short_options - hol->short_options);
|
||
|
||
/* Now add the short options from MORE, fixing up its entries
|
||
too. */
|
||
so = short_options + hol_so_len;
|
||
more_so = more->short_options;
|
||
for (left = more->num_entries; left > 0; e++, left--)
|
||
{
|
||
int opts_left;
|
||
const struct argp_option *opt;
|
||
|
||
e->short_options = so;
|
||
|
||
for (opts_left = e->num, opt = e->opt; opts_left; opt++, opts_left--)
|
||
{
|
||
int ch = *more_so;
|
||
if (oshort (opt) && ch == opt->key)
|
||
/* The next short option in MORE_SO, CH, is from OPT. */
|
||
{
|
||
if (! find_char (ch, short_options,
|
||
short_options + hol_so_len))
|
||
/* The short option CH isn't shadowed by HOL's options,
|
||
so add it to the sum. */
|
||
*so++ = ch;
|
||
more_so++;
|
||
}
|
||
}
|
||
}
|
||
|
||
*so = '\0';
|
||
|
||
free (hol->entries);
|
||
free (hol->short_options);
|
||
|
||
hol->entries = entries;
|
||
hol->num_entries = num_entries;
|
||
hol->short_options = short_options;
|
||
}
|
||
}
|
||
|
||
hol_free (more);
|
||
}
|
||
|
||
/* Inserts enough spaces to make sure STREAM is at column COL. */
|
||
static void
|
||
indent_to (argp_fmtstream_t stream, unsigned col)
|
||
{
|
||
int needed = col - __argp_fmtstream_point (stream);
|
||
while (needed-- > 0)
|
||
__argp_fmtstream_putc (stream, ' ');
|
||
}
|
||
|
||
/* Output to STREAM either a space, or a newline if there isn't room for at
|
||
least ENSURE characters before the right margin. */
|
||
static void
|
||
space (argp_fmtstream_t stream, size_t ensure)
|
||
{
|
||
if (__argp_fmtstream_point (stream) + ensure
|
||
>= __argp_fmtstream_rmargin (stream))
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
else
|
||
__argp_fmtstream_putc (stream, ' ');
|
||
}
|
||
|
||
/* If the option REAL has an argument, we print it in using the printf
|
||
format REQ_FMT or OPT_FMT depending on whether it's a required or
|
||
optional argument. */
|
||
static void
|
||
arg (const struct argp_option *real, const char *req_fmt, const char *opt_fmt,
|
||
const char *domain, argp_fmtstream_t stream)
|
||
{
|
||
if (real->arg)
|
||
{
|
||
if (real->flags & OPTION_ARG_OPTIONAL)
|
||
__argp_fmtstream_printf (stream, opt_fmt,
|
||
dgettext (domain, real->arg));
|
||
else
|
||
__argp_fmtstream_printf (stream, req_fmt,
|
||
dgettext (domain, real->arg));
|
||
}
|
||
}
|
||
|
||
/* Helper functions for hol_entry_help. */
|
||
|
||
/* State used during the execution of hol_help. */
|
||
struct hol_help_state
|
||
{
|
||
/* PREV_ENTRY should contain the previous entry printed, or 0. */
|
||
struct hol_entry *prev_entry;
|
||
|
||
/* If an entry is in a different group from the previous one, and SEP_GROUPS
|
||
is true, then a blank line will be printed before any output. */
|
||
int sep_groups;
|
||
|
||
/* True if a duplicate option argument was suppressed (only ever set if
|
||
UPARAMS.dup_args is false). */
|
||
int suppressed_dup_arg;
|
||
};
|
||
|
||
/* Some state used while printing a help entry (used to communicate with
|
||
helper functions). See the doc for hol_entry_help for more info, as most
|
||
of the fields are copied from its arguments. */
|
||
struct pentry_state
|
||
{
|
||
const struct hol_entry *entry;
|
||
argp_fmtstream_t stream;
|
||
struct hol_help_state *hhstate;
|
||
|
||
/* True if nothing's been printed so far. */
|
||
int first;
|
||
|
||
/* If non-zero, the state that was used to print this help. */
|
||
const struct argp_state *state;
|
||
};
|
||
|
||
/* If a user doc filter should be applied to DOC, do so. */
|
||
static const char *
|
||
filter_doc (const char *doc, int key, const struct argp *argp,
|
||
const struct argp_state *state)
|
||
{
|
||
if (argp && argp->help_filter)
|
||
/* We must apply a user filter to this output. */
|
||
{
|
||
void *input = __argp_input (argp, state);
|
||
return (*argp->help_filter) (key, doc, input);
|
||
}
|
||
else
|
||
/* No filter. */
|
||
return doc;
|
||
}
|
||
|
||
/* Prints STR as a header line, with the margin lines set appropiately, and
|
||
notes the fact that groups should be separated with a blank line. ARGP is
|
||
the argp that should dictate any user doc filtering to take place. Note
|
||
that the previous wrap margin isn't restored, but the left margin is reset
|
||
to 0. */
|
||
static void
|
||
print_header (const char *str, const struct argp *argp,
|
||
struct pentry_state *pest)
|
||
{
|
||
const char *tstr = dgettext (argp->argp_domain, str);
|
||
const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_HEADER, argp, pest->state);
|
||
|
||
if (fstr)
|
||
{
|
||
if (*fstr)
|
||
{
|
||
if (pest->hhstate->prev_entry)
|
||
/* Precede with a blank line. */
|
||
__argp_fmtstream_putc (pest->stream, '\n');
|
||
indent_to (pest->stream, uparams.header_col);
|
||
__argp_fmtstream_set_lmargin (pest->stream, uparams.header_col);
|
||
__argp_fmtstream_set_wmargin (pest->stream, uparams.header_col);
|
||
__argp_fmtstream_puts (pest->stream, fstr);
|
||
__argp_fmtstream_set_lmargin (pest->stream, 0);
|
||
__argp_fmtstream_putc (pest->stream, '\n');
|
||
}
|
||
|
||
pest->hhstate->sep_groups = 1; /* Separate subsequent groups. */
|
||
}
|
||
|
||
if (fstr != tstr)
|
||
free ((char *) fstr);
|
||
}
|
||
|
||
/* Inserts a comma if this isn't the first item on the line, and then makes
|
||
sure we're at least to column COL. If this *is* the first item on a line,
|
||
prints any pending whitespace/headers that should precede this line. Also
|
||
clears FIRST. */
|
||
static void
|
||
comma (unsigned col, struct pentry_state *pest)
|
||
{
|
||
if (pest->first)
|
||
{
|
||
const struct hol_entry *pe = pest->hhstate->prev_entry;
|
||
const struct hol_cluster *cl = pest->entry->cluster;
|
||
|
||
if (pest->hhstate->sep_groups && pe && pest->entry->group != pe->group)
|
||
__argp_fmtstream_putc (pest->stream, '\n');
|
||
|
||
if (cl && cl->header && *cl->header
|
||
&& (!pe
|
||
|| (pe->cluster != cl
|
||
&& !hol_cluster_is_child (pe->cluster, cl))))
|
||
/* If we're changing clusters, then this must be the start of the
|
||
ENTRY's cluster unless that is an ancestor of the previous one
|
||
(in which case we had just popped into a sub-cluster for a bit).
|
||
If so, then print the cluster's header line. */
|
||
{
|
||
int old_wm = __argp_fmtstream_wmargin (pest->stream);
|
||
print_header (cl->header, cl->argp, pest);
|
||
__argp_fmtstream_set_wmargin (pest->stream, old_wm);
|
||
}
|
||
|
||
pest->first = 0;
|
||
}
|
||
else
|
||
__argp_fmtstream_puts (pest->stream, ", ");
|
||
|
||
indent_to (pest->stream, col);
|
||
}
|
||
|
||
/* Print help for ENTRY to STREAM. */
|
||
static void
|
||
hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
|
||
argp_fmtstream_t stream, struct hol_help_state *hhstate)
|
||
{
|
||
unsigned num;
|
||
const struct argp_option *real = entry->opt, *opt;
|
||
char *so = entry->short_options;
|
||
int have_long_opt = 0; /* We have any long options. */
|
||
/* Saved margins. */
|
||
int old_lm = __argp_fmtstream_set_lmargin (stream, 0);
|
||
int old_wm = __argp_fmtstream_wmargin (stream);
|
||
/* PEST is a state block holding some of our variables that we'd like to
|
||
share with helper functions. */
|
||
struct pentry_state pest = { entry, stream, hhstate, 1, state };
|
||
|
||
if (! odoc (real))
|
||
for (opt = real, num = entry->num; num > 0; opt++, num--)
|
||
if (opt->name && ovisible (opt))
|
||
{
|
||
have_long_opt = 1;
|
||
break;
|
||
}
|
||
|
||
/* First emit short options. */
|
||
__argp_fmtstream_set_wmargin (stream, uparams.short_opt_col); /* For truly bizarre cases. */
|
||
for (opt = real, num = entry->num; num > 0; opt++, num--)
|
||
if (oshort (opt) && opt->key == *so)
|
||
/* OPT has a valid (non shadowed) short option. */
|
||
{
|
||
if (ovisible (opt))
|
||
{
|
||
comma (uparams.short_opt_col, &pest);
|
||
__argp_fmtstream_putc (stream, '-');
|
||
__argp_fmtstream_putc (stream, *so);
|
||
if (!have_long_opt || uparams.dup_args)
|
||
arg (real, " %s", "[%s]",
|
||
state == NULL ? NULL : state->root_argp->argp_domain,
|
||
stream);
|
||
else if (real->arg)
|
||
hhstate->suppressed_dup_arg = 1;
|
||
}
|
||
so++;
|
||
}
|
||
|
||
/* Now, long options. */
|
||
if (odoc (real))
|
||
/* A `documentation' option. */
|
||
{
|
||
__argp_fmtstream_set_wmargin (stream, uparams.doc_opt_col);
|
||
for (opt = real, num = entry->num; num > 0; opt++, num--)
|
||
if (opt->name && ovisible (opt))
|
||
{
|
||
comma (uparams.doc_opt_col, &pest);
|
||
/* Calling gettext here isn't quite right, since sorting will
|
||
have been done on the original; but documentation options
|
||
should be pretty rare anyway... */
|
||
__argp_fmtstream_puts (stream,
|
||
dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain,
|
||
opt->name));
|
||
}
|
||
}
|
||
else
|
||
/* A real long option. */
|
||
{
|
||
__argp_fmtstream_set_wmargin (stream, uparams.long_opt_col);
|
||
for (opt = real, num = entry->num; num > 0; opt++, num--)
|
||
if (opt->name && ovisible (opt))
|
||
{
|
||
comma (uparams.long_opt_col, &pest);
|
||
__argp_fmtstream_printf (stream, "--%s", opt->name);
|
||
arg (real, "=%s", "[=%s]",
|
||
state == NULL ? NULL : state->root_argp->argp_domain, stream);
|
||
}
|
||
}
|
||
|
||
/* Next, documentation strings. */
|
||
__argp_fmtstream_set_lmargin (stream, 0);
|
||
|
||
if (pest.first)
|
||
{
|
||
/* Didn't print any switches, what's up? */
|
||
if (!oshort (real) && !real->name)
|
||
/* This is a group header, print it nicely. */
|
||
print_header (real->doc, entry->argp, &pest);
|
||
else
|
||
/* Just a totally shadowed option or null header; print nothing. */
|
||
goto cleanup; /* Just return, after cleaning up. */
|
||
}
|
||
else
|
||
{
|
||
const char *tstr = real->doc ? dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain,
|
||
real->doc) : 0;
|
||
const char *fstr = filter_doc (tstr, real->key, entry->argp, state);
|
||
if (fstr && *fstr)
|
||
{
|
||
unsigned int col = __argp_fmtstream_point (stream);
|
||
|
||
__argp_fmtstream_set_lmargin (stream, uparams.opt_doc_col);
|
||
__argp_fmtstream_set_wmargin (stream, uparams.opt_doc_col);
|
||
|
||
if (col > (unsigned int) (uparams.opt_doc_col + 3))
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
else if (col >= (unsigned int) uparams.opt_doc_col)
|
||
__argp_fmtstream_puts (stream, " ");
|
||
else
|
||
indent_to (stream, uparams.opt_doc_col);
|
||
|
||
__argp_fmtstream_puts (stream, fstr);
|
||
}
|
||
if (fstr && fstr != tstr)
|
||
free ((char *) fstr);
|
||
|
||
/* Reset the left margin. */
|
||
__argp_fmtstream_set_lmargin (stream, 0);
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
}
|
||
|
||
hhstate->prev_entry = entry;
|
||
|
||
cleanup:
|
||
__argp_fmtstream_set_lmargin (stream, old_lm);
|
||
__argp_fmtstream_set_wmargin (stream, old_wm);
|
||
}
|
||
|
||
/* Output a long help message about the options in HOL to STREAM. */
|
||
static void
|
||
hol_help (struct hol *hol, const struct argp_state *state,
|
||
argp_fmtstream_t stream)
|
||
{
|
||
unsigned num;
|
||
struct hol_entry *entry;
|
||
struct hol_help_state hhstate = { 0, 0, 0 };
|
||
|
||
for (entry = hol->entries, num = hol->num_entries; num > 0; entry++, num--)
|
||
hol_entry_help (entry, state, stream, &hhstate);
|
||
|
||
if (hhstate.suppressed_dup_arg && uparams.dup_args_note)
|
||
{
|
||
const char *tstr = dgettext (state == NULL ? NULL
|
||
: state->root_argp->argp_domain, "\
|
||
Mandatory or optional arguments to long options are also mandatory or \
|
||
optional for any corresponding short options.");
|
||
const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_DUP_ARGS_NOTE,
|
||
state ? state->root_argp : 0, state);
|
||
if (fstr && *fstr)
|
||
{
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
__argp_fmtstream_puts (stream, fstr);
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
}
|
||
if (fstr && fstr != tstr)
|
||
free ((char *) fstr);
|
||
}
|
||
}
|
||
|
||
/* Helper functions for hol_usage. */
|
||
|
||
/* If OPT is a short option without an arg, append its key to the string
|
||
pointer pointer to by COOKIE, and advance the pointer. */
|
||
static int
|
||
add_argless_short_opt (const struct argp_option *opt,
|
||
const struct argp_option *real,
|
||
const char *domain, void *cookie)
|
||
{
|
||
char **snao_end = cookie;
|
||
if (!(opt->arg || real->arg)
|
||
&& !((opt->flags | real->flags) & OPTION_NO_USAGE))
|
||
*(*snao_end)++ = opt->key;
|
||
return 0;
|
||
}
|
||
|
||
/* If OPT is a short option with an arg, output a usage entry for it to the
|
||
stream pointed at by COOKIE. */
|
||
static int
|
||
usage_argful_short_opt (const struct argp_option *opt,
|
||
const struct argp_option *real,
|
||
const char *domain, void *cookie)
|
||
{
|
||
argp_fmtstream_t stream = cookie;
|
||
const char *arg = opt->arg;
|
||
int flags = opt->flags | real->flags;
|
||
|
||
if (! arg)
|
||
arg = real->arg;
|
||
|
||
if (arg && !(flags & OPTION_NO_USAGE))
|
||
{
|
||
arg = dgettext (domain, arg);
|
||
|
||
if (flags & OPTION_ARG_OPTIONAL)
|
||
__argp_fmtstream_printf (stream, " [-%c[%s]]", opt->key, arg);
|
||
else
|
||
{
|
||
/* Manually do line wrapping so that it (probably) won't
|
||
get wrapped at the embedded space. */
|
||
space (stream, 6 + strlen (arg));
|
||
__argp_fmtstream_printf (stream, "[-%c %s]", opt->key, arg);
|
||
}
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Output a usage entry for the long option opt to the stream pointed at by
|
||
COOKIE. */
|
||
static int
|
||
usage_long_opt (const struct argp_option *opt,
|
||
const struct argp_option *real,
|
||
const char *domain, void *cookie)
|
||
{
|
||
argp_fmtstream_t stream = cookie;
|
||
const char *arg = opt->arg;
|
||
int flags = opt->flags | real->flags;
|
||
|
||
if (! arg)
|
||
arg = real->arg;
|
||
|
||
if (! (flags & OPTION_NO_USAGE))
|
||
{
|
||
if (arg)
|
||
{
|
||
arg = dgettext (domain, arg);
|
||
if (flags & OPTION_ARG_OPTIONAL)
|
||
__argp_fmtstream_printf (stream, " [--%s[=%s]]", opt->name, arg);
|
||
else
|
||
__argp_fmtstream_printf (stream, " [--%s=%s]", opt->name, arg);
|
||
}
|
||
else
|
||
__argp_fmtstream_printf (stream, " [--%s]", opt->name);
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
/* Print a short usage description for the arguments in HOL to STREAM. */
|
||
static void
|
||
hol_usage (struct hol *hol, argp_fmtstream_t stream)
|
||
{
|
||
if (hol->num_entries > 0)
|
||
{
|
||
unsigned nentries;
|
||
struct hol_entry *entry;
|
||
char *short_no_arg_opts = alloca (strlen (hol->short_options) + 1);
|
||
char *snao_end = short_no_arg_opts;
|
||
|
||
/* First we put a list of short options without arguments. */
|
||
for (entry = hol->entries, nentries = hol->num_entries
|
||
; nentries > 0
|
||
; entry++, nentries--)
|
||
hol_entry_short_iterate (entry, add_argless_short_opt,
|
||
entry->argp->argp_domain, &snao_end);
|
||
if (snao_end > short_no_arg_opts)
|
||
{
|
||
*snao_end++ = 0;
|
||
__argp_fmtstream_printf (stream, " [-%s]", short_no_arg_opts);
|
||
}
|
||
|
||
/* Now a list of short options *with* arguments. */
|
||
for (entry = hol->entries, nentries = hol->num_entries
|
||
; nentries > 0
|
||
; entry++, nentries--)
|
||
hol_entry_short_iterate (entry, usage_argful_short_opt,
|
||
entry->argp->argp_domain, stream);
|
||
|
||
/* Finally, a list of long options (whew!). */
|
||
for (entry = hol->entries, nentries = hol->num_entries
|
||
; nentries > 0
|
||
; entry++, nentries--)
|
||
hol_entry_long_iterate (entry, usage_long_opt,
|
||
entry->argp->argp_domain, stream);
|
||
}
|
||
}
|
||
|
||
/* Make a HOL containing all levels of options in ARGP. CLUSTER is the
|
||
cluster in which ARGP's entries should be clustered, or 0. */
|
||
static struct hol *
|
||
argp_hol (const struct argp *argp, struct hol_cluster *cluster)
|
||
{
|
||
const struct argp_child *child = argp->children;
|
||
struct hol *hol = make_hol (argp, cluster);
|
||
if (child)
|
||
while (child->argp)
|
||
{
|
||
struct hol_cluster *child_cluster =
|
||
((child->group || child->header)
|
||
/* Put CHILD->argp within its own cluster. */
|
||
? hol_add_cluster (hol, child->group, child->header,
|
||
child - argp->children, cluster, argp)
|
||
/* Just merge it into the parent's cluster. */
|
||
: cluster);
|
||
hol_append (hol, argp_hol (child->argp, child_cluster)) ;
|
||
child++;
|
||
}
|
||
return hol;
|
||
}
|
||
|
||
/* Calculate how many different levels with alternative args strings exist in
|
||
ARGP. */
|
||
static size_t
|
||
argp_args_levels (const struct argp *argp)
|
||
{
|
||
size_t levels = 0;
|
||
const struct argp_child *child = argp->children;
|
||
|
||
if (argp->args_doc && strchr (argp->args_doc, '\n'))
|
||
levels++;
|
||
|
||
if (child)
|
||
while (child->argp)
|
||
levels += argp_args_levels ((child++)->argp);
|
||
|
||
return levels;
|
||
}
|
||
|
||
/* Print all the non-option args documented in ARGP to STREAM. Any output is
|
||
preceded by a space. LEVELS is a pointer to a byte vector the length
|
||
returned by argp_args_levels; it should be initialized to zero, and
|
||
updated by this routine for the next call if ADVANCE is true. True is
|
||
returned as long as there are more patterns to output. */
|
||
static int
|
||
argp_args_usage (const struct argp *argp, const struct argp_state *state,
|
||
char **levels, int advance, argp_fmtstream_t stream)
|
||
{
|
||
char *our_level = *levels;
|
||
int multiple = 0;
|
||
const struct argp_child *child = argp->children;
|
||
const char *tdoc = dgettext (argp->argp_domain, argp->args_doc), *nl = 0;
|
||
const char *fdoc = filter_doc (tdoc, ARGP_KEY_HELP_ARGS_DOC, argp, state);
|
||
|
||
if (fdoc)
|
||
{
|
||
const char *cp = fdoc;
|
||
nl = __strchrnul (cp, '\n');
|
||
if (*nl != '\0')
|
||
/* This is a `multi-level' args doc; advance to the correct position
|
||
as determined by our state in LEVELS, and update LEVELS. */
|
||
{
|
||
int i;
|
||
multiple = 1;
|
||
for (i = 0; i < *our_level; i++)
|
||
cp = nl + 1, nl = __strchrnul (cp, '\n');
|
||
(*levels)++;
|
||
}
|
||
|
||
/* Manually do line wrapping so that it (probably) won't get wrapped at
|
||
any embedded spaces. */
|
||
space (stream, 1 + nl - cp);
|
||
|
||
__argp_fmtstream_write (stream, cp, nl - cp);
|
||
}
|
||
if (fdoc && fdoc != tdoc)
|
||
free ((char *)fdoc); /* Free user's modified doc string. */
|
||
|
||
if (child)
|
||
while (child->argp)
|
||
advance = !argp_args_usage ((child++)->argp, state, levels, advance, stream);
|
||
|
||
if (advance && multiple)
|
||
{
|
||
/* Need to increment our level. */
|
||
if (*nl)
|
||
/* There's more we can do here. */
|
||
{
|
||
(*our_level)++;
|
||
advance = 0; /* Our parent shouldn't advance also. */
|
||
}
|
||
else if (*our_level > 0)
|
||
/* We had multiple levels, but used them up; reset to zero. */
|
||
*our_level = 0;
|
||
}
|
||
|
||
return !advance;
|
||
}
|
||
|
||
/* Print the documentation for ARGP to STREAM; if POST is false, then
|
||
everything preceeding a `\v' character in the documentation strings (or
|
||
the whole string, for those with none) is printed, otherwise, everything
|
||
following the `\v' character (nothing for strings without). Each separate
|
||
bit of documentation is separated a blank line, and if PRE_BLANK is true,
|
||
then the first is as well. If FIRST_ONLY is true, only the first
|
||
occurrence is output. Returns true if anything was output. */
|
||
static int
|
||
argp_doc (const struct argp *argp, const struct argp_state *state,
|
||
int post, int pre_blank, int first_only,
|
||
argp_fmtstream_t stream)
|
||
{
|
||
const char *text;
|
||
const char *inp_text;
|
||
void *input = 0;
|
||
int anything = 0;
|
||
size_t inp_text_limit = 0;
|
||
const char *doc = dgettext (argp->argp_domain, argp->doc);
|
||
const struct argp_child *child = argp->children;
|
||
|
||
if (doc)
|
||
{
|
||
char *vt = strchr (doc, '\v');
|
||
inp_text = post ? (vt ? vt + 1 : 0) : doc;
|
||
inp_text_limit = (!post && vt) ? (vt - doc) : 0;
|
||
}
|
||
else
|
||
inp_text = 0;
|
||
|
||
if (argp->help_filter)
|
||
/* We have to filter the doc strings. */
|
||
{
|
||
if (inp_text_limit)
|
||
/* Copy INP_TEXT so that it's nul-terminated. */
|
||
inp_text = __strndup (inp_text, inp_text_limit);
|
||
input = __argp_input (argp, state);
|
||
text =
|
||
(*argp->help_filter) (post
|
||
? ARGP_KEY_HELP_POST_DOC
|
||
: ARGP_KEY_HELP_PRE_DOC,
|
||
inp_text, input);
|
||
}
|
||
else
|
||
text = (const char *) inp_text;
|
||
|
||
if (text)
|
||
{
|
||
if (pre_blank)
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
|
||
if (text == inp_text && inp_text_limit)
|
||
__argp_fmtstream_write (stream, inp_text, inp_text_limit);
|
||
else
|
||
__argp_fmtstream_puts (stream, text);
|
||
|
||
if (__argp_fmtstream_point (stream) > __argp_fmtstream_lmargin (stream))
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
|
||
anything = 1;
|
||
}
|
||
|
||
if (text && text != inp_text)
|
||
free ((char *) text); /* Free TEXT returned from the help filter. */
|
||
if (inp_text && inp_text_limit && argp->help_filter)
|
||
free ((char *) inp_text); /* We copied INP_TEXT, so free it now. */
|
||
|
||
if (post && argp->help_filter)
|
||
/* Now see if we have to output a ARGP_KEY_HELP_EXTRA text. */
|
||
{
|
||
text = (*argp->help_filter) (ARGP_KEY_HELP_EXTRA, 0, input);
|
||
if (text)
|
||
{
|
||
if (anything || pre_blank)
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
__argp_fmtstream_puts (stream, text);
|
||
free ((char *) text);
|
||
if (__argp_fmtstream_point (stream)
|
||
> __argp_fmtstream_lmargin (stream))
|
||
__argp_fmtstream_putc (stream, '\n');
|
||
anything = 1;
|
||
}
|
||
}
|
||
|
||
if (child)
|
||
while (child->argp && !(first_only && anything))
|
||
anything |=
|
||
argp_doc ((child++)->argp, state,
|
||
post, anything || pre_blank, first_only,
|
||
stream);
|
||
|
||
return anything;
|
||
}
|
||
|
||
/* Output a usage message for ARGP to STREAM. If called from
|
||
argp_state_help, STATE is the relevent parsing state. FLAGS are from the
|
||
set ARGP_HELP_*. NAME is what to use wherever a `program name' is
|
||
needed. */
|
||
static void
|
||
_help (const struct argp *argp, const struct argp_state *state, FILE *stream,
|
||
unsigned flags, char *name)
|
||
{
|
||
int anything = 0; /* Whether we've output anything. */
|
||
struct hol *hol = 0;
|
||
argp_fmtstream_t fs;
|
||
|
||
if (! stream)
|
||
return;
|
||
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__flockfile (stream);
|
||
#endif
|
||
|
||
fill_in_uparams (state);
|
||
|
||
fs = __argp_make_fmtstream (stream, 0, uparams.rmargin, 0);
|
||
if (! fs)
|
||
{
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__funlockfile (stream);
|
||
#endif
|
||
return;
|
||
}
|
||
|
||
if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG))
|
||
{
|
||
hol = argp_hol (argp, 0);
|
||
|
||
/* If present, these options always come last. */
|
||
hol_set_group (hol, "help", -1);
|
||
hol_set_group (hol, "version", -1);
|
||
|
||
hol_sort (hol);
|
||
}
|
||
|
||
if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE))
|
||
/* Print a short `Usage:' message. */
|
||
{
|
||
int first_pattern = 1, more_patterns;
|
||
size_t num_pattern_levels = argp_args_levels (argp);
|
||
char *pattern_levels = alloca (num_pattern_levels);
|
||
|
||
memset (pattern_levels, 0, num_pattern_levels);
|
||
|
||
do
|
||
{
|
||
int old_lm;
|
||
int old_wm = __argp_fmtstream_set_wmargin (fs, uparams.usage_indent);
|
||
char *levels = pattern_levels;
|
||
|
||
if (first_pattern)
|
||
__argp_fmtstream_printf (fs, "%s %s",
|
||
dgettext (argp->argp_domain, "Usage:"),
|
||
name);
|
||
else
|
||
__argp_fmtstream_printf (fs, "%s %s",
|
||
dgettext (argp->argp_domain, " or: "),
|
||
name);
|
||
|
||
/* We set the lmargin as well as the wmargin, because hol_usage
|
||
manually wraps options with newline to avoid annoying breaks. */
|
||
old_lm = __argp_fmtstream_set_lmargin (fs, uparams.usage_indent);
|
||
|
||
if (flags & ARGP_HELP_SHORT_USAGE)
|
||
/* Just show where the options go. */
|
||
{
|
||
if (hol->num_entries > 0)
|
||
__argp_fmtstream_puts (fs, dgettext (argp->argp_domain,
|
||
" [OPTION...]"));
|
||
}
|
||
else
|
||
/* Actually print the options. */
|
||
{
|
||
hol_usage (hol, fs);
|
||
flags |= ARGP_HELP_SHORT_USAGE; /* But only do so once. */
|
||
}
|
||
|
||
more_patterns = argp_args_usage (argp, state, &levels, 1, fs);
|
||
|
||
__argp_fmtstream_set_wmargin (fs, old_wm);
|
||
__argp_fmtstream_set_lmargin (fs, old_lm);
|
||
|
||
__argp_fmtstream_putc (fs, '\n');
|
||
anything = 1;
|
||
|
||
first_pattern = 0;
|
||
}
|
||
while (more_patterns);
|
||
}
|
||
|
||
if (flags & ARGP_HELP_PRE_DOC)
|
||
anything |= argp_doc (argp, state, 0, 0, 1, fs);
|
||
|
||
if (flags & ARGP_HELP_SEE)
|
||
{
|
||
__argp_fmtstream_printf (fs, dgettext (argp->argp_domain, "\
|
||
Try `%s --help' or `%s --usage' for more information.\n"),
|
||
name, name);
|
||
anything = 1;
|
||
}
|
||
|
||
if (flags & ARGP_HELP_LONG)
|
||
/* Print a long, detailed help message. */
|
||
{
|
||
/* Print info about all the options. */
|
||
if (hol->num_entries > 0)
|
||
{
|
||
if (anything)
|
||
__argp_fmtstream_putc (fs, '\n');
|
||
hol_help (hol, state, fs);
|
||
anything = 1;
|
||
}
|
||
}
|
||
|
||
if (flags & ARGP_HELP_POST_DOC)
|
||
/* Print any documentation strings at the end. */
|
||
anything |= argp_doc (argp, state, 1, anything, 0, fs);
|
||
|
||
if ((flags & ARGP_HELP_BUG_ADDR) && argp_program_bug_address)
|
||
{
|
||
if (anything)
|
||
__argp_fmtstream_putc (fs, '\n');
|
||
__argp_fmtstream_printf (fs, dgettext (argp->argp_domain,
|
||
"Report bugs to %s.\n"),
|
||
argp_program_bug_address);
|
||
anything = 1;
|
||
}
|
||
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__funlockfile (stream);
|
||
#endif
|
||
|
||
if (hol)
|
||
hol_free (hol);
|
||
|
||
__argp_fmtstream_free (fs);
|
||
}
|
||
|
||
/* Output a usage message for ARGP to STREAM. FLAGS are from the set
|
||
ARGP_HELP_*. NAME is what to use wherever a `program name' is needed. */
|
||
void __argp_help (const struct argp *argp, FILE *stream,
|
||
unsigned flags, char *name)
|
||
{
|
||
_help (argp, 0, stream, flags, name);
|
||
}
|
||
#ifdef weak_alias
|
||
weak_alias (__argp_help, argp_help)
|
||
#endif
|
||
|
||
#ifndef _LIBC
|
||
char *__argp_basename (char *name)
|
||
{
|
||
char *short_name = strrchr (name, '/');
|
||
return short_name ? short_name + 1 : name;
|
||
}
|
||
|
||
char *
|
||
__argp_short_program_name (void)
|
||
{
|
||
# if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
|
||
return program_invocation_short_name;
|
||
# elif HAVE_DECL_PROGRAM_INVOCATION_NAME
|
||
return __argp_basename (program_invocation_name);
|
||
# else
|
||
/* FIXME: What now? Miles suggests that it is better to use NULL,
|
||
but currently the value is passed on directly to fputs_unlocked,
|
||
so that requires more changes. */
|
||
# if __GNUC__
|
||
# warning No reasonable value to return
|
||
# endif /* __GNUC__ */
|
||
return "";
|
||
# endif
|
||
}
|
||
#endif
|
||
|
||
/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
|
||
from the set ARGP_HELP_*. */
|
||
void
|
||
__argp_state_help (const struct argp_state *state, FILE *stream, unsigned flags)
|
||
{
|
||
if ((!state || ! (state->flags & ARGP_NO_ERRS)) && stream)
|
||
{
|
||
if (state && (state->flags & ARGP_LONG_ONLY))
|
||
flags |= ARGP_HELP_LONG_ONLY;
|
||
|
||
_help (state ? state->root_argp : 0, state, stream, flags,
|
||
state ? state->name : __argp_short_program_name ());
|
||
|
||
if (!state || ! (state->flags & ARGP_NO_EXIT))
|
||
{
|
||
if (flags & ARGP_HELP_EXIT_ERR)
|
||
exit (argp_err_exit_status);
|
||
if (flags & ARGP_HELP_EXIT_OK)
|
||
exit (0);
|
||
}
|
||
}
|
||
}
|
||
#ifdef weak_alias
|
||
weak_alias (__argp_state_help, argp_state_help)
|
||
#endif
|
||
|
||
/* If appropriate, print the printf string FMT and following args, preceded
|
||
by the program name and `:', to stderr, and followed by a `Try ... --help'
|
||
message, then exit (1). */
|
||
void
|
||
__argp_error (const struct argp_state *state, const char *fmt, ...)
|
||
{
|
||
if (!state || !(state->flags & ARGP_NO_ERRS))
|
||
{
|
||
FILE *stream = state ? state->err_stream : stderr;
|
||
|
||
if (stream)
|
||
{
|
||
va_list ap;
|
||
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__flockfile (stream);
|
||
#endif
|
||
|
||
va_start (ap, fmt);
|
||
|
||
#ifdef _LIBC
|
||
char *buf;
|
||
|
||
if (_IO_vasprintf (&buf, fmt, ap) < 0)
|
||
buf = NULL;
|
||
|
||
__fxprintf (stream, "%s: %s\n",
|
||
state ? state->name : __argp_short_program_name (), buf);
|
||
|
||
free (buf);
|
||
#else
|
||
fputs_unlocked (state ? state->name : __argp_short_program_name (),
|
||
stream);
|
||
putc_unlocked (':', stream);
|
||
putc_unlocked (' ', stream);
|
||
|
||
vfprintf (stream, fmt, ap);
|
||
|
||
putc_unlocked ('\n', stream);
|
||
#endif
|
||
|
||
__argp_state_help (state, stream, ARGP_HELP_STD_ERR);
|
||
|
||
va_end (ap);
|
||
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__funlockfile (stream);
|
||
#endif
|
||
}
|
||
}
|
||
}
|
||
#ifdef weak_alias
|
||
weak_alias (__argp_error, argp_error)
|
||
#endif
|
||
|
||
/* Similar to the standard gnu error-reporting function error(), but will
|
||
respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
|
||
to STATE->err_stream. This is useful for argument parsing code that is
|
||
shared between program startup (when exiting is desired) and runtime
|
||
option parsing (when typically an error code is returned instead). The
|
||
difference between this function and argp_error is that the latter is for
|
||
*parsing errors*, and the former is for other problems that occur during
|
||
parsing but don't reflect a (syntactic) problem with the input. */
|
||
void
|
||
__argp_failure (const struct argp_state *state, int status, int errnum,
|
||
const char *fmt, ...)
|
||
{
|
||
if (!state || !(state->flags & ARGP_NO_ERRS))
|
||
{
|
||
FILE *stream = state ? state->err_stream : stderr;
|
||
|
||
if (stream)
|
||
{
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__flockfile (stream);
|
||
#endif
|
||
|
||
#ifdef _LIBC
|
||
__fxprintf (stream, "%s",
|
||
state ? state->name : __argp_short_program_name ());
|
||
#else
|
||
fputs_unlocked (state ? state->name : __argp_short_program_name (),
|
||
stream);
|
||
#endif
|
||
|
||
if (fmt)
|
||
{
|
||
va_list ap;
|
||
|
||
va_start (ap, fmt);
|
||
#ifdef _LIBC
|
||
char *buf;
|
||
|
||
if (_IO_vasprintf (&buf, fmt, ap) < 0)
|
||
buf = NULL;
|
||
|
||
__fxprintf (stream, ": %s", buf);
|
||
|
||
free (buf);
|
||
#else
|
||
putc_unlocked (':', stream);
|
||
putc_unlocked (' ', stream);
|
||
|
||
vfprintf (stream, fmt, ap);
|
||
#endif
|
||
|
||
va_end (ap);
|
||
}
|
||
|
||
if (errnum)
|
||
{
|
||
char buf[200];
|
||
|
||
#ifdef _LIBC
|
||
__fxprintf (stream, ": %s",
|
||
__strerror_r (errnum, buf, sizeof (buf)));
|
||
#else
|
||
putc_unlocked (':', stream);
|
||
putc_unlocked (' ', stream);
|
||
# ifdef HAVE_STRERROR_R
|
||
fputs (__strerror_r (errnum, buf, sizeof (buf)), stream);
|
||
# else
|
||
fputs (strerror (errnum), stream);
|
||
# endif
|
||
#endif
|
||
}
|
||
|
||
if (_IO_fwide (stream, 0) > 0)
|
||
putwc_unlocked (L'\n', stream);
|
||
else
|
||
putc_unlocked ('\n', stream);
|
||
|
||
#if _LIBC || (HAVE_FLOCKFILE && HAVE_FUNLOCKFILE)
|
||
__funlockfile (stream);
|
||
#endif
|
||
|
||
if (status && (!state || !(state->flags & ARGP_NO_EXIT)))
|
||
exit (status);
|
||
}
|
||
}
|
||
}
|
||
#ifdef weak_alias
|
||
weak_alias (__argp_failure, argp_failure)
|
||
#endif
|