| 1 | /* cmdline.h |
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| 2 | * Wrapper for GNU getopt which deals with standard options |
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| 3 | * Copyright (C) 1998-2001,2003 Olly Betts |
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| 4 | * |
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| 5 | * This program is free software; you can redistribute it and/or modify |
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| 6 | * it under the terms of the GNU General Public License as published by |
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| 7 | * the Free Software Foundation; either version 2 of the License, or |
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| 8 | * (at your option) any later version. |
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| 9 | * |
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| 10 | * This program is distributed in the hope that it will be useful, |
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| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 13 | * GNU General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU General Public License |
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| 16 | * along with this program; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 18 | */ |
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| 19 | |
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| 20 | #ifndef CMDLINE_H |
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| 21 | # define CMDLINE_H |
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| 22 | |
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| 23 | #ifdef __cplusplus |
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| 24 | extern "C" { |
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| 25 | #endif |
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| 26 | |
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| 27 | /* Duplicate these from getopt.h to avoid problems |
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| 28 | * with trying to compile getopt.h with C++ on MacOS X */ |
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| 29 | #ifndef no_argument |
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| 30 | /* These values are definitely correct since getopt.h says 0, 1, 2 work */ |
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| 31 | # define no_argument 0 |
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| 32 | # define required_argument 1 |
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| 33 | # define optional_argument 2 |
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| 34 | |
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| 35 | /* FIXME: struct definition needs to match getopt.h */ |
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| 36 | struct option { |
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| 37 | const char *name; |
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| 38 | /* has_arg can't be an enum because some compilers complain about |
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| 39 | * type mismatches in all the code that assumes it is an int. */ |
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| 40 | int has_arg; |
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| 41 | int *flag; |
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| 42 | int val; |
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| 43 | }; |
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| 44 | |
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| 45 | extern char *optarg; |
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| 46 | extern int optind; |
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| 47 | extern int opterr; |
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| 48 | extern int optopt; |
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| 49 | #endif |
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| 50 | |
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| 51 | struct help_msg { |
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| 52 | int opt; |
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| 53 | const char *msg; |
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| 54 | }; |
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| 55 | |
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| 56 | /* give -1 for max_args_ if there's no limit */ |
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| 57 | void cmdline_init(int argc_, char *const *argv_, const char *shortopts_, |
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| 58 | const struct option *longopts_, int *longind_, |
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| 59 | const struct help_msg *help_, |
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| 60 | int min_args_, int max_args_); |
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| 61 | /* if args not NULL, use instead of auto-generated FILE args */ |
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| 62 | /* if extra not NULL, display as extra blurb at end */ |
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| 63 | void cmdline_set_syntax_message(const char *args, const char *extra); |
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| 64 | int cmdline_getopt(void); |
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| 65 | void cmdline_help(void); |
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| 66 | void cmdline_version(void); |
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| 67 | void cmdline_syntax(void); |
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| 68 | void cmdline_too_few_args(void); |
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| 69 | void cmdline_too_many_args(void); |
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| 70 | int cmdline_int_arg(void); |
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| 71 | double cmdline_double_arg(void); |
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| 72 | |
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| 73 | #define HLP_ENCODELONG(N) (-(N + 1)) |
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| 74 | #define HLP_DECODELONG(N) (-(N + 1)) |
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| 75 | #define HLP_ISLONG(N) ((N) <= 0) |
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| 76 | #define HLP_HELP 30000 |
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| 77 | #define HLP_VERSION 30001 |
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| 78 | |
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| 79 | #ifdef __cplusplus |
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| 80 | } |
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| 81 | #endif |
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| 82 | |
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| 83 | #endif |
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