[6974a34] | 1 | /* cmdline.h |
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[aadc86e] | 2 | * Wrapper for GNU getopt which deals with standard options |
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[45af761] | 3 | * Copyright (C) 1998-2001,2003,2011 Olly Betts |
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[846746e] | 4 | * |
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[89231c4] | 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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[846746e] | 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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[89231c4] | 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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[846746e] | 14 | * |
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[89231c4] | 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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[ecbc6c18] | 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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[aadc86e] | 18 | */ |
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| 19 | |
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[d07944e] | 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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[be97baf] | 27 | /* Duplicate these from getopt.h to avoid problems |
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[559cd60] | 28 | * with trying to compile getopt.h with C++ on macOS */ |
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[be97baf] | 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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[3451fc5] | 49 | #endif |
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[aadc86e] | 50 | |
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[cb3d1e2] | 51 | struct help_msg { |
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[3b9ec3f] | 52 | int opt; |
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[45af761] | 53 | int msg_no; |
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| 54 | const char * arg; |
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[3b9ec3f] | 55 | }; |
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[aadc86e] | 56 | |
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[3b9ec3f] | 57 | /* give -1 for max_args_ if there's no limit */ |
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| 58 | void cmdline_init(int argc_, char *const *argv_, const char *shortopts_, |
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| 59 | const struct option *longopts_, int *longind_, |
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| 60 | const struct help_msg *help_, |
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[acc20b1] | 61 | int min_args_, int max_args_); |
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[d8dbdff] | 62 | /* if args not 0, use instead of auto-generated FILE args */ |
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| 63 | /* if extra not 0, display as extra blurb at end */ |
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| 64 | /* if arg not NULL, extra must be a printf format with one %s */ |
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| 65 | void cmdline_set_syntax_message(int msg_args, int msg_extra, const char * arg); |
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[3b9ec3f] | 66 | int cmdline_getopt(void); |
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| 67 | void cmdline_help(void); |
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| 68 | void cmdline_version(void); |
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| 69 | void cmdline_syntax(void); |
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[66711f2] | 70 | void cmdline_too_few_args(void); |
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| 71 | void cmdline_too_many_args(void); |
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[3b9ec3f] | 72 | int cmdline_int_arg(void); |
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[acc20b1] | 73 | double cmdline_double_arg(void); |
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[aadc86e] | 74 | |
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| 75 | #define HLP_ENCODELONG(N) (-(N + 1)) |
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| 76 | #define HLP_DECODELONG(N) (-(N + 1)) |
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| 77 | #define HLP_ISLONG(N) ((N) <= 0) |
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| 78 | #define HLP_HELP 30000 |
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| 79 | #define HLP_VERSION 30001 |
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[d07944e] | 80 | |
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| 81 | #ifdef __cplusplus |
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| 82 | } |
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| 83 | #endif |
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| 84 | |
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| 85 | #endif |
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