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4
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1 /*
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2 lw_cmdline.h
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3
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4 Copyright © 2010 William Astle
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5
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6 This file is part of LWTOOLS.
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7
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8 LWTOOLS is free software: you can redistribute it and/or modify it under the
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9 terms of the GNU General Public License as published by the Free Software
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10 Foundation, either version 3 of the License, or (at your option) any later
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11 version.
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12
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13 This program is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 more details.
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17
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18 You should have received a copy of the GNU General Public License along with
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19 this program. If not, see <http://www.gnu.org/licenses/>.
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20 */
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21
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22 /*
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23
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24 This argument parser is patterned after argp from the gnu C library but
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25 has much of the functionality removed. It is provided here because not
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26 every system has glibc.
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27
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28 Most notably, it does not support option groups or i18n.
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29
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30 */
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31
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32 #ifndef ___lw_cmdline_h_seen___
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33 #define ___lw_cmdline_h_seen___
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34
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35 struct lw_cmdline_options
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36 {
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37 char *name;
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38 int key;
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39 char *arg;
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40 int flags;
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41 char *doc;
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42 };
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43
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44 enum
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45 {
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46 lw_cmdline_opt_optional = 1,
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47 lw_cmdline_opt_hidden = 2,
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48 lw_cmdline_opt_alias = 4,
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49 lw_cmdline_opt_doc = 8,
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50 lw_cmdline_opt_nousage = 0x10
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51 };
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52
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53 enum
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54 {
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55 lw_cmdline_err_unknown = -1
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56 };
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57
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58 enum
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59 {
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60 lw_cmdline_key_arg = -1,
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61 lw_cmdline_key_end = 0
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62 };
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63
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64 struct lw_cmdline_parser
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65 {
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66 struct lw_cmdline_options *options;
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67 int (*parser)(int key, char *arg, void *input);
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68 char *args_doc;
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69 char *doc;
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70 char *program_version;
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71 };
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72
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73 #ifdef ___lw_cmdline_c_seen___
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74
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75 #else /* def ___lw_cmdline_c_seen___ */
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76
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77 extern int lw_cmdline_parse(struct lw_cmdline_parser *parser, int argc, char **argv, unsigned flags, int *arg_index, void *input);
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78
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79
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80 #endif /* def ___lw_cmdline_c_seen___ */
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81
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82 #endif /* ___lw_cmdline_h_seen___ */
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