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/* Hierarchial argument parsing, layered over getopt.
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Copyright (C) 1995-1999, 2003-2010 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Miles Bader <miles@gnu.ai.mit.edu>.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#define __need_error_t
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# define __NTH(fct) fct __THROW
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/* The __attribute__ feature is available in gcc versions 2.5 and later.
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The __-protected variants of the attributes 'format' and 'printf' are
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accepted by gcc versions 2.6.4 (effectively 2.7) and later.
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We enable __attribute__ only if these are supported too, because
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gnulib and libintl do '#define printf __printf__' when they override
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the 'printf' function. */
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# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
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# define __attribute__(Spec) /* empty */
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/* GCC 2.95 and later have "__restrict"; C99 compilers have
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"restrict", and "configure" may have defined "restrict".
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Other compilers use __restrict, __restrict__, and _Restrict, and
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'configure' might #define 'restrict' to those words. */
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# if ! (2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__))
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# if 199901L <= __STDC_VERSION__
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# define __restrict restrict
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#ifndef __error_t_defined
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# define __error_t_defined
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/* A description of a particular option. A pointer to an array of
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these is passed in the OPTIONS field of an argp structure. Each option
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entry can correspond to one long option and/or one short option; more
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names for the same option can be added by following an entry in an option
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array with options having the OPTION_ALIAS flag set. */
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/* The long option name. For more than one name for the same option, you
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can use following options with the OPTION_ALIAS flag set. */
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/* What key is returned for this option. If > 0 and printable, then it's
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also accepted as a short option. */
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/* If non-NULL, this is the name of the argument associated with this
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option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
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/* The doc string for this option. If both NAME and KEY are 0, This string
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will be printed outdented from the normal option column, making it
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useful as a group header (it will be the first thing printed in its
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group); in this usage, it's conventional to end the string with a `:'.
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Write the initial value as N_("TEXT") if you want xgettext to collect
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it into a POT file. */
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/* The group this option is in. In a long help message, options are sorted
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alphabetically within each group, and the groups presented in the order
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0, 1, 2, ..., n, -m, ..., -2, -1. Every entry in an options array with
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if this field 0 will inherit the group number of the previous entry, or
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zero if it's the first one, unless its a group header (NAME and KEY both
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0), in which case, the previous entry + 1 is the default. Automagic
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options such as --help are put into group -1. */
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/* The argument associated with this option is optional. */
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#define OPTION_ARG_OPTIONAL 0x1
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/* This option isn't displayed in any help messages. */
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#define OPTION_HIDDEN 0x2
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/* This option is an alias for the closest previous non-alias option. This
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means that it will be displayed in the same help entry, and will inherit
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fields other than NAME and KEY from the aliased option. */
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#define OPTION_ALIAS 0x4
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/* This option isn't actually an option (and so should be ignored by the
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actual option parser), but rather an arbitrary piece of documentation that
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should be displayed in much the same manner as the options. If this flag
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is set, then the option NAME field is displayed unmodified (e.g., no `--'
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prefix is added) at the left-margin (where a *short* option would normally
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be displayed), and the documentation string in the normal place. The NAME
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field will be translated using gettext, unless OPTION_NO_TRANS is set (see
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below). For purposes of sorting, any leading whitespace and punctuation is
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ignored, except that if the first non-whitespace character is not `-', this
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entry is displayed after all options (and OPTION_DOC entries with a leading
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`-') in the same group. */
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#define OPTION_DOC 0x8
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/* This option shouldn't be included in `long' usage messages (but is still
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included in help messages). This is mainly intended for options that are
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completely documented in an argp's ARGS_DOC field, in which case including
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the option in the generic usage list would be redundant. For instance,
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if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is to
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distinguish these two cases, -x should probably be marked
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#define OPTION_NO_USAGE 0x10
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/* Valid only in conjunction with OPTION_DOC. This option disables translation
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#define OPTION_NO_TRANS 0x20
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struct argp; /* fwd declare this type */
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struct argp_state; /* " */
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struct argp_child; /* " */
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/* The type of a pointer to an argp parsing function. */
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typedef error_t (*argp_parser_t) (int key, char *arg,
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struct argp_state *state);
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/* What to return for unrecognized keys. For special ARGP_KEY_ keys, such
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returns will simply be ignored. For user keys, this error will be turned
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into EINVAL (if the call to argp_parse is such that errors are propagated
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back to the user instead of exiting); returning EINVAL itself would result
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in an immediate stop to parsing in *all* cases. */
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#define ARGP_ERR_UNKNOWN E2BIG /* Hurd should never need E2BIG. XXX */
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/* Special values for the KEY argument to an argument parsing function.
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ARGP_ERR_UNKNOWN should be returned if they aren't understood.
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The sequence of keys to a parsing function is either (where each
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uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
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INIT opt... NO_ARGS END SUCCESS -- No non-option arguments at all
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or INIT (opt | ARG)... END SUCCESS -- All non-option args parsed
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or INIT (opt | ARG)... SUCCESS -- Some non-option arg unrecognized
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The third case is where every parser returned ARGP_KEY_UNKNOWN for an
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argument, in which case parsing stops at that argument (returning the
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unparsed arguments to the caller of argp_parse if requested, or stopping
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with an error message if not).
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If an error occurs (either detected by argp, or because the parsing
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function returned an error value), then the parser is called with
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ARGP_KEY_ERROR, and no further calls are made. */
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/* This is not an option at all, but rather a command line argument. If a
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parser receiving this key returns success, the fact is recorded, and the
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ARGP_KEY_NO_ARGS case won't be used. HOWEVER, if while processing the
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argument, a parser function decrements the NEXT field of the state it's
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passed, the option won't be considered processed; this is to allow you to
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actually modify the argument (perhaps into an option), and have it
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#define ARGP_KEY_ARG 0
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/* There are remaining arguments not parsed by any parser, which may be found
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starting at (STATE->argv + STATE->next). If success is returned, but
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STATE->next left untouched, it's assumed that all arguments were consume,
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otherwise, the parser should adjust STATE->next to reflect any arguments
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#define ARGP_KEY_ARGS 0x1000006
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/* There are no more command line arguments at all. */
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#define ARGP_KEY_END 0x1000001
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/* Because it's common to want to do some special processing if there aren't
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any non-option args, user parsers are called with this key if they didn't
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successfully process any non-option arguments. Called just before
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ARGP_KEY_END (where more general validity checks on previously parsed
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arguments can take place). */
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#define ARGP_KEY_NO_ARGS 0x1000002
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/* Passed in before any parsing is done. Afterwards, the values of each
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element of the CHILD_INPUT field, if any, in the state structure is
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copied to each child's state to be the initial value of the INPUT field. */
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#define ARGP_KEY_INIT 0x1000003
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/* Use after all other keys, including SUCCESS & END. */
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#define ARGP_KEY_FINI 0x1000007
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/* Passed in when parsing has successfully been completed (even if there are
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still arguments remaining). */
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#define ARGP_KEY_SUCCESS 0x1000004
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/* Passed in if an error occurs. */
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#define ARGP_KEY_ERROR 0x1000005
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/* An argp structure contains a set of options declarations, a function to
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deal with parsing one, documentation string, a possible vector of child
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argp's, and perhaps a function to filter help output. When actually
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parsing options, getopt is called with the union of all the argp
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structures chained together through their CHILD pointers, with conflicts
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being resolved in favor of the first occurrence in the chain. */
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/* An array of argp_option structures, terminated by an entry with both
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NAME and KEY having a value of 0. */
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const struct argp_option *options;
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/* What to do with an option from this structure. KEY is the key
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associated with the option, and ARG is any associated argument (NULL if
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none was supplied). If KEY isn't understood, ARGP_ERR_UNKNOWN should be
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returned. If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
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parsing is stopped immediately, and that value is returned from
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argp_parse(). For special (non-user-supplied) values of KEY, see the
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ARGP_KEY_ definitions below. */
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argp_parser_t parser;
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/* A string describing what other arguments are wanted by this program. It
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is only used by argp_usage to print the `Usage:' message. If it
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contains newlines, the strings separated by them are considered
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alternative usage patterns, and printed on separate lines (lines after
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the first are prefix by ` or: ' instead of `Usage:'). */
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const char *args_doc;
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/* If non-NULL, a string containing extra text to be printed before and
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after the options in a long help message (separated by a vertical tab
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Write the initial value as N_("BEFORE-TEXT") "\v" N_("AFTER-TEXT") if
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you want xgettext to collect the two pieces of text into a POT file. */
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/* A vector of argp_children structures, terminated by a member with a 0
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argp field, pointing to child argps should be parsed with this one. Any
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conflicts are resolved in favor of this argp, or early argps in the
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CHILDREN list. This field is useful if you use libraries that supply
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their own argp structure, which you want to use in conjunction with your
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const struct argp_child *children;
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/* If non-zero, this should be a function to filter the output of help
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messages. KEY is either a key from an option, in which case TEXT is
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that option's help text, or a special key from the ARGP_KEY_HELP_
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defines, below, describing which other help text TEXT is. The function
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should return either TEXT, if it should be used as-is, a replacement
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string, which should be malloced, and will be freed by argp, or NULL,
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meaning `print nothing'. The value for TEXT is *after* any translation
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has been done, so if any of the replacement text also needs translation,
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that should be done by the filter function. INPUT is either the input
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supplied to argp_parse, or NULL, if argp_help was called directly. */
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char *(*help_filter) (int __key, const char *__text, void *__input);
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/* If non-zero the strings used in the argp library are translated using
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the domain described by this string. Otherwise the currently installed
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default domain is used. */
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const char *argp_domain;
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/* Possible KEY arguments to a help filter function. */
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#define ARGP_KEY_HELP_PRE_DOC 0x2000001 /* Help text preceeding options. */
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#define ARGP_KEY_HELP_POST_DOC 0x2000002 /* Help text following options. */
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#define ARGP_KEY_HELP_HEADER 0x2000003 /* Option header string. */
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#define ARGP_KEY_HELP_EXTRA 0x2000004 /* After all other documentation;
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TEXT is NULL for this key. */
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/* Explanatory note emitted when duplicate option arguments have been
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#define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
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#define ARGP_KEY_HELP_ARGS_DOC 0x2000006 /* Argument doc string. */
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/* When an argp has a non-zero CHILDREN field, it should point to a vector of
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argp_child structures, each of which describes a subsidiary argp. */
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/* The child parser. */
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const struct argp *argp;
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/* Flags for this child. */
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/* If non-zero, an optional header to be printed in help output before the
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child options. As a side-effect, a non-zero value forces the child
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options to be grouped together; to achieve this effect without actually
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printing a header string, use a value of "". */
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/* Where to group the child options relative to the other (`consolidated')
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options in the parent argp; the values are the same as the GROUP field
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in argp_option structs, but all child-groupings follow parent options at
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a particular group level. If both this field and HEADER are zero, then
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they aren't grouped at all, but rather merged with the parent options
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(merging the child's grouping levels with the parents). */
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/* Parsing state. This is provided to parsing functions called by argp,
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which may examine and, as noted, modify fields. */
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/* The top level ARGP being parsed. */
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const struct argp *root_argp;
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/* The argument vector being parsed. May be modified. */
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/* The index in ARGV of the next arg that to be parsed. May be modified. */
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/* The flags supplied to argp_parse. May be modified. */
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/* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
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number of the current arg, starting at zero, and incremented after each
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such call returns. At all other times, this is the number of such
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arguments that have been processed. */
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/* If non-zero, the index in ARGV of the first argument following a special
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`--' argument (which prevents anything following being interpreted as an
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option). Only set once argument parsing has proceeded past this point. */
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/* An arbitrary pointer passed in from the user. */
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/* Values to pass to child parsers. This vector will be the same length as
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the number of children for the current parser. */
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/* For the parser's use. Initialized to 0. */
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/* The name used when printing messages. This is initialized to ARGV[0],
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or PROGRAM_INVOCATION_NAME if that is unavailable. */
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/* Streams used when argp prints something. */
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FILE *err_stream; /* For errors; initialized to stderr. */
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FILE *out_stream; /* For information; initialized to stdout. */
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void *pstate; /* Private, for use by argp. */
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/* Flags for argp_parse (note that the defaults are those that are
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convenient for program command line parsing): */
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/* Don't ignore the first element of ARGV. Normally (and always unless
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ARGP_NO_ERRS is set) the first element of the argument vector is
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skipped for option parsing purposes, as it corresponds to the program name
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in a command line. */
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#define ARGP_PARSE_ARGV0 0x01
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/* Don't print error messages for unknown options to stderr; unless this flag
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is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
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name in the error messages. This flag implies ARGP_NO_EXIT (on the
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assumption that silent exiting upon errors is bad behaviour). */
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#define ARGP_NO_ERRS 0x02
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/* Don't parse any non-option args. Normally non-option args are parsed by
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calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
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as the value. Since it's impossible to know which parse function wants to
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handle it, each one is called in turn, until one returns 0 or an error
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other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
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argp_parse returns prematurely (but with a return value of 0). If all
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args have been parsed without error, all parsing functions are called one
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last time with a key of ARGP_KEY_END. This flag needn't normally be set,
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as the normal behavior is to stop parsing as soon as some argument can't
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#define ARGP_NO_ARGS 0x04
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/* Parse options and arguments in the same order they occur on the command
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line -- normally they're rearranged so that all options come first. */
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#define ARGP_IN_ORDER 0x08
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/* Don't provide the standard long option --help, which causes usage and
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option help information to be output to stdout, and exit (0) called. */
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#define ARGP_NO_HELP 0x10
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/* Don't exit on errors (they may still result in error messages). */
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#define ARGP_NO_EXIT 0x20
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/* Use the gnu getopt `long-only' rules for parsing arguments. */
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#define ARGP_LONG_ONLY 0x40
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/* Turns off any message-printing/exiting options. */
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#define ARGP_SILENT (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
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/* Parse the options strings in ARGC & ARGV according to the options in ARGP.
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FLAGS is one of the ARGP_ flags above. If ARG_INDEX is non-NULL, the
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index in ARGV of the first unparsed option is returned in it. If an
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unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
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routine returned a non-zero value, it is returned; otherwise 0 is
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returned. This function may also call exit unless the ARGP_NO_HELP flag
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is set. INPUT is a pointer to a value to be passed in to the parser. */
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extern error_t argp_parse (const struct argp *__restrict __argp,
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int /*argc*/, char **__restrict /*argv*/,
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unsigned __flags, int *__restrict __arg_index,
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void *__restrict __input);
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extern error_t __argp_parse (const struct argp *__restrict __argp,
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int /*argc*/, char **__restrict /*argv*/,
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unsigned __flags, int *__restrict __arg_index,
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void *__restrict __input);
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/* Global variables. */
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/* GNULIB makes sure both program_invocation_name and
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program_invocation_short_name are available */
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#ifdef GNULIB_PROGRAM_INVOCATION_NAME
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extern char *program_invocation_name;
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# undef HAVE_DECL_PROGRAM_INVOCATION_NAME
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# define HAVE_DECL_PROGRAM_INVOCATION_NAME 1
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#ifdef GNULIB_PROGRAM_INVOCATION_SHORT_NAME
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extern char *program_invocation_short_name;
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# undef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
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# define HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME 1
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/* If defined or set by the user program to a non-zero value, then a default
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option --version is added (unless the ARGP_NO_HELP flag is used), which
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will print this string followed by a newline and exit (unless the
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ARGP_NO_EXIT flag is used). Overridden by ARGP_PROGRAM_VERSION_HOOK. */
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extern const char *argp_program_version;
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/* If defined or set by the user program to a non-zero value, then a default
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option --version is added (unless the ARGP_NO_HELP flag is used), which
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calls this function with a stream to print the version to and a pointer to
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the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
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used). This variable takes precedent over ARGP_PROGRAM_VERSION. */
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extern void (*argp_program_version_hook) (FILE *__restrict __stream,
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struct argp_state *__restrict
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/* If defined or set by the user program, it should point to string that is
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the bug-reporting address for the program. It will be printed by
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argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
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standard help messages), embedded in a sentence that says something like
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`Report bugs to ADDR.'. */
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extern const char *argp_program_bug_address;
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/* The exit status that argp will use when exiting due to a parsing error.
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If not defined or set by the user program, this defaults to EX_USAGE from
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extern error_t argp_err_exit_status;
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/* Flags for argp_help. */
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#define ARGP_HELP_USAGE 0x01 /* a Usage: message. */
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#define ARGP_HELP_SHORT_USAGE 0x02 /* " but don't actually print options. */
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#define ARGP_HELP_SEE 0x04 /* a `Try ... for more help' message. */
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#define ARGP_HELP_LONG 0x08 /* a long help message. */
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#define ARGP_HELP_PRE_DOC 0x10 /* doc string preceding long help. */
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#define ARGP_HELP_POST_DOC 0x20 /* doc string following long help. */
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#define ARGP_HELP_DOC (ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
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#define ARGP_HELP_BUG_ADDR 0x40 /* bug report address */
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#define ARGP_HELP_LONG_ONLY 0x80 /* modify output appropriately to
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reflect ARGP_LONG_ONLY mode. */
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/* These ARGP_HELP flags are only understood by argp_state_help. */
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#define ARGP_HELP_EXIT_ERR 0x100 /* Call exit(1) instead of returning. */
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#define ARGP_HELP_EXIT_OK 0x200 /* Call exit(0) instead of returning. */
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/* The standard thing to do after a program command line parsing error, if an
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error message has already been printed. */
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#define ARGP_HELP_STD_ERR \
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(ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
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/* The standard thing to do after a program command line parsing error, if no
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more specific error message has been printed. */
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#define ARGP_HELP_STD_USAGE \
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(ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
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/* The standard thing to do in response to a --help option. */
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#define ARGP_HELP_STD_HELP \
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(ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
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| ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
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/* Output a usage message for ARGP to STREAM. FLAGS are from the set
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extern void argp_help (const struct argp *__restrict __argp,
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FILE *__restrict __stream,
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unsigned __flags, char *__restrict __name);
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extern void __argp_help (const struct argp *__restrict __argp,
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FILE *__restrict __stream, unsigned __flags,
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/* The following routines are intended to be called from within an argp
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parsing routine (thus taking an argp_state structure as the first
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argument). They may or may not print an error message and exit, depending
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on the flags in STATE -- in any case, the caller should be prepared for
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them *not* to exit, and should return an appropiate error after calling
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them. [argp_usage & argp_error should probably be called argp_state_...,
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but they're used often enough that they should be short] */
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/* Output, if appropriate, a usage message for STATE to STREAM. FLAGS are
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from the set ARGP_HELP_*. */
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extern void argp_state_help (const struct argp_state *__restrict __state,
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FILE *__restrict __stream,
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unsigned int __flags);
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extern void __argp_state_help (const struct argp_state *__restrict __state,
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FILE *__restrict __stream,
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unsigned int __flags);
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#if _LIBC || !defined __USE_EXTERN_INLINES
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/* Possibly output the standard usage message for ARGP to stderr and exit. */
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extern void argp_usage (const struct argp_state *__state);
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extern void __argp_usage (const struct argp_state *__state);
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/* If appropriate, print the printf string FMT and following args, preceded
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by the program name and `:', to stderr, and followed by a `Try ... --help'
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message, then exit (1). */
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extern void argp_error (const struct argp_state *__restrict __state,
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const char *__restrict __fmt, ...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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extern void __argp_error (const struct argp_state *__restrict __state,
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const char *__restrict __fmt, ...)
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__attribute__ ((__format__ (__printf__, 2, 3)));
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/* Similar to the standard gnu error-reporting function error(), but will
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respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
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to STATE->err_stream. This is useful for argument parsing code that is
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shared between program startup (when exiting is desired) and runtime
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option parsing (when typically an error code is returned instead). The
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difference between this function and argp_error is that the latter is for
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*parsing errors*, and the former is for other problems that occur during
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parsing but don't reflect a (syntactic) problem with the input. */
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extern void argp_failure (const struct argp_state *__restrict __state,
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int __status, int __errnum,
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const char *__restrict __fmt, ...)
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__attribute__ ((__format__ (__printf__, 4, 5)));
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extern void __argp_failure (const struct argp_state *__restrict __state,
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int __status, int __errnum,
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const char *__restrict __fmt, ...)
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__attribute__ ((__format__ (__printf__, 4, 5)));
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#if _LIBC || !defined __USE_EXTERN_INLINES
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/* Returns true if the option OPT is a valid short option. */
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extern int _option_is_short (const struct argp_option *__opt) __THROW;
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extern int __option_is_short (const struct argp_option *__opt) __THROW;
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/* Returns true if the option OPT is in fact the last (unused) entry in an
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extern int _option_is_end (const struct argp_option *__opt) __THROW;
563
extern int __option_is_end (const struct argp_option *__opt) __THROW;
566
/* Return the input field for ARGP in the parser corresponding to STATE; used
567
by the help routines. */
568
extern void *_argp_input (const struct argp *__restrict __argp,
569
const struct argp_state *__restrict __state)
571
extern void *__argp_input (const struct argp *__restrict __argp,
572
const struct argp_state *__restrict __state)
575
#ifdef __USE_EXTERN_INLINES
578
# define __argp_usage argp_usage
579
# define __argp_state_help argp_state_help
580
# define __option_is_short _option_is_short
581
# define __option_is_end _option_is_end
586
/* GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
587
inline semantics, unless -fgnu89-inline is used. It defines a macro
588
__GNUC_STDC_INLINE__ to indicate this situation or a macro
589
__GNUC_GNU_INLINE__ to indicate the opposite situation.
590
GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
591
semantics but warns, unless -fgnu89-inline is used:
592
warning: C99 inline functions are not supported; using GNU89
593
warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
594
It defines a macro __GNUC_GNU_INLINE__ to indicate this situation. */
595
# if defined __GNUC_STDC_INLINE__
596
# define ARGP_EI __inline__
597
# elif defined __GNUC_GNU_INLINE__
598
# define ARGP_EI extern __inline__ __attribute__ ((__gnu_inline__))
600
# define ARGP_EI extern __inline__
603
/* With other compilers, assume the ISO C99 meaning of 'inline', if
604
the compiler supports 'inline' at all. */
605
# define ARGP_EI inline
610
__argp_usage (const struct argp_state *__state)
612
__argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
616
__NTH (__option_is_short (const struct argp_option *__opt))
618
if (__opt->flags & OPTION_DOC)
622
int __key = __opt->key;
623
return __key > 0 && __key <= UCHAR_MAX && isprint (__key);
628
__NTH (__option_is_end (const struct argp_option *__opt))
630
return !__opt->key && !__opt->name && !__opt->doc && !__opt->group;
635
# undef __argp_state_help
636
# undef __option_is_short
637
# undef __option_is_end
639
#endif /* Use extern inlines. */
added
removed
grub-core/gnulib/argp.h
