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8ea49cf513
* jnlib/argparse.c (iio_item_def_s, IIO_ITEM_DEF): New. (initialize): Init field IIO_LIST. (ignore_invalid_option_p): New. (ignore_invalid_option_add): New. (ignore_invalid_option_clear): New. (optfile_parse): Implement meta option. -- This option is currently of no use. However, as soon as it has been deployed in all stable versions of GnuPG, it will allow the use of the same configuration file with an old and a new version of GnuPG. For example: If a new version implements the option "foobar", and a user uses it in gpg.conf, an old version of gpg would bail out with the error "invalid option". To avoid that the following line can be put above that option in gpg.conf ignore-invalid-option foobar This meta option may be given several times or several option names may be given as arguments (space delimited). Note that this option is not available on the command line. (cherry-picked from commit 41d564333d35c923f473aa90625d91f8fe18cd0b)
185 lines
7.0 KiB
C
185 lines
7.0 KiB
C
/* argparse.h - Argument parser for option handling.
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* Copyright (C) 1998,1999,2000,2001,2006 Free Software Foundation, Inc.
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*
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* This file is part of JNLIB.
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*
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* JNLIB is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as
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* published by the Free Software Foundation; either version 2.1 of
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* the License, or (at your option) any later version.
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*
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* JNLIB is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef LIBJNLIB_ARGPARSE_H
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#define LIBJNLIB_ARGPARSE_H
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#include <stdio.h>
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#include "types.h"
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typedef struct
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{
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int *argc; /* Pointer to ARGC (value subject to change). */
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char ***argv; /* Pointer to ARGV (value subject to change). */
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unsigned int flags; /* Global flags. May be set prior to calling the
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parser. The parser may change the value. */
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int err; /* Print error description for last option.
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Either 0, ARGPARSE_PRINT_WARNING or
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ARGPARSE_PRINT_ERROR. */
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int r_opt; /* Returns option code. */
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int r_type; /* Returns type of option value. */
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union {
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int ret_int;
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long ret_long;
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unsigned long ret_ulong;
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char *ret_str;
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} r; /* Return values */
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struct {
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int idx;
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int inarg;
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int stopped;
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const char *last;
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void *aliases;
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const void *cur_alias;
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void *iio_list;
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} internal; /* Private - do not change. */
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} ARGPARSE_ARGS;
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typedef struct
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{
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int short_opt;
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const char *long_opt;
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unsigned int flags;
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const char *description; /* Optional option description. */
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} ARGPARSE_OPTS;
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/* Global flags (ARGPARSE_ARGS). */
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#define ARGPARSE_FLAG_KEEP 1 /* Do not remove options form argv. */
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#define ARGPARSE_FLAG_ALL 2 /* Do not stop at last option but return
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remaining args with R_OPT set to -1. */
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#define ARGPARSE_FLAG_MIXED 4 /* Assume options and args are mixed. */
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#define ARGPARSE_FLAG_NOSTOP 8 /* Do not stop processing at "--". */
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#define ARGPARSE_FLAG_ARG0 16 /* Do not skip the first arg. */
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#define ARGPARSE_FLAG_ONEDASH 32 /* Allow long options with one dash. */
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#define ARGPARSE_FLAG_NOVERSION 64 /* No output for "--version". */
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/* Flags for each option (ARGPARSE_OPTS). The type code may be
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ORed with the OPT flags. */
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#define ARGPARSE_TYPE_NONE 0 /* Does not take an argument. */
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#define ARGPARSE_TYPE_INT 1 /* Takes an int argument. */
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#define ARGPARSE_TYPE_STRING 2 /* Takes a string argument. */
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#define ARGPARSE_TYPE_LONG 3 /* Takes a long argument. */
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#define ARGPARSE_TYPE_ULONG 4 /* Takes an unsigned long argument. */
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#define ARGPARSE_OPT_OPTIONAL (1<<3) /* Argument is optional. */
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#define ARGPARSE_OPT_PREFIX (1<<4) /* Allow 0x etc. prefixed values. */
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#define ARGPARSE_OPT_COMMAND (1<<8) /* The argument is a command. */
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/* A set of macros to make option definitions easier to read. */
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#define ARGPARSE_x(s,l,t,f,d) \
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{ (s), (l), ARGPARSE_TYPE_ ## t | (f), (d) }
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#define ARGPARSE_s(s,l,t,d) \
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{ (s), (l), ARGPARSE_TYPE_ ## t, (d) }
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#define ARGPARSE_s_n(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_NONE, (d) }
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#define ARGPARSE_s_i(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_INT, (d) }
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#define ARGPARSE_s_s(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_STRING, (d) }
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#define ARGPARSE_s_l(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_LONG, (d) }
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#define ARGPARSE_s_u(s,l,d) \
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{ (s), (l), ARGPARSE_TYPE_ULONG, (d) }
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#define ARGPARSE_o(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_o_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_OPTIONAL), (d) }
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#define ARGPARSE_p(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_p_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op(s,l,t,d) \
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{ (s), (l), (ARGPARSE_TYPE_ ## t \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_n(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_i(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_INT \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_s(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_STRING \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_l(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_LONG \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_op_u(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_ULONG \
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| ARGPARSE_OPT_OPTIONAL | ARGPARSE_OPT_PREFIX), (d) }
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#define ARGPARSE_c(s,l,d) \
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{ (s), (l), (ARGPARSE_TYPE_NONE | ARGPARSE_OPT_COMMAND), (d) }
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#define ARGPARSE_group(s,d) \
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{ (s), NULL, 0, (d) }
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#define ARGPARSE_end() { 0, NULL, 0, NULL }
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/* Other constants. */
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#define ARGPARSE_PRINT_WARNING 1
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#define ARGPARSE_PRINT_ERROR 2
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/* Error values. */
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#define ARGPARSE_IS_ARG (-1)
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#define ARGPARSE_INVALID_OPTION (-2)
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#define ARGPARSE_MISSING_ARG (-3)
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#define ARGPARSE_KEYWORD_TOO_LONG (-4)
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#define ARGPARSE_READ_ERROR (-5)
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#define ARGPARSE_UNEXPECTED_ARG (-6)
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#define ARGPARSE_INVALID_COMMAND (-7)
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#define ARGPARSE_AMBIGUOUS_OPTION (-8)
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#define ARGPARSE_AMBIGUOUS_COMMAND (-9)
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#define ARGPARSE_INVALID_ALIAS (-10)
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#define ARGPARSE_OUT_OF_CORE (-11)
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int arg_parse( ARGPARSE_ARGS *arg, ARGPARSE_OPTS *opts);
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int optfile_parse( FILE *fp, const char *filename, unsigned *lineno,
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ARGPARSE_ARGS *arg, ARGPARSE_OPTS *opts);
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void usage( int level );
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const char *strusage( int level );
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void set_strusage( const char *(*f)( int ) );
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#endif /*LIBJNLIB_ARGPARSE_H*/
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