1 | /* cmdline.h |
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2 | * Wrapper for GNU getopt which deals with standard options |
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3 | * Copyright (C) 1998-2001,2003,2011 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 | int msg_no; |
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54 | const char * arg; |
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55 | }; |
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56 | |
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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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61 | int min_args_, int max_args_); |
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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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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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70 | void cmdline_too_few_args(void); |
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71 | void cmdline_too_many_args(void); |
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72 | int cmdline_int_arg(void); |
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73 | double cmdline_double_arg(void); |
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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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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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