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| author | Paul Eggert | 1997-01-22 05:25:31 +0000 |
|---|---|---|
| committer | Paul Eggert | 1997-01-22 05:25:31 +0000 |
| commit | bae473ad6cb52ea134f4c2d0507ea55c34d507b0 (patch) | |
| tree | 7c362944273799c4a578d233f117cc1a01008c78 /lib-src/getopt.h | |
| parent | e0bf9fafdbd7e7c49089845fb918d07eb7403d63 (diff) | |
| download | emacs-bae473ad6cb52ea134f4c2d0507ea55c34d507b0.tar.gz emacs-bae473ad6cb52ea134f4c2d0507ea55c34d507b0.zip | |
automatically generated from GPLed version
Diffstat (limited to 'lib-src/getopt.h')
| -rw-r--r-- | lib-src/getopt.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/lib-src/getopt.h b/lib-src/getopt.h new file mode 100644 index 00000000000..c4549243230 --- /dev/null +++ b/lib-src/getopt.h | |||
| @@ -0,0 +1,135 @@ | |||
| 1 | /* Declarations for getopt. | ||
| 2 | Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc. | ||
| 3 | |||
| 4 | the C library, however. The master source lives in /gd/gnu/lib. | ||
| 5 | |||
| 6 | NOTE: The canonical source of this file is maintained with the GNU C Library. | ||
| 7 | Bugs can be reported to bug-glibc@prep.ai.mit.edu. | ||
| 8 | |||
| 9 | This program is free software; you can redistribute it and/or modify it | ||
| 10 | under the terms of the GNU General Public License as published by the | ||
| 11 | Free Software Foundation; either version 2, or (at your option) any | ||
| 12 | later version. | ||
| 13 | |||
| 14 | This program is distributed in the hope that it will be useful, | ||
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 | GNU General Public License for more details. | ||
| 18 | |||
| 19 | You should have received a copy of the GNU General Public License | ||
| 20 | along with this program; if not, write to the Free Software | ||
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | ||
| 22 | USA. */ | ||
| 23 | |||
| 24 | #ifndef _GETOPT_H | ||
| 25 | #define _GETOPT_H 1 | ||
| 26 | |||
| 27 | #ifdef __cplusplus | ||
| 28 | extern "C" { | ||
| 29 | #endif | ||
| 30 | |||
| 31 | /* For communication from `getopt' to the caller. | ||
| 32 | When `getopt' finds an option that takes an argument, | ||
| 33 | the argument value is returned here. | ||
| 34 | Also, when `ordering' is RETURN_IN_ORDER, | ||
| 35 | each non-option ARGV-element is returned here. */ | ||
| 36 | |||
| 37 | extern char *optarg; | ||
| 38 | |||
| 39 | /* Index in ARGV of the next element to be scanned. | ||
| 40 | This is used for communication to and from the caller | ||
| 41 | and for communication between successive calls to `getopt'. | ||
| 42 | |||
| 43 | On entry to `getopt', zero means this is the first call; initialize. | ||
| 44 | |||
| 45 | When `getopt' returns -1, this is the index of the first of the | ||
| 46 | non-option elements that the caller should itself scan. | ||
| 47 | |||
| 48 | Otherwise, `optind' communicates from one call to the next | ||
| 49 | how much of ARGV has been scanned so far. */ | ||
| 50 | |||
| 51 | extern int optind; | ||
| 52 | |||
| 53 | /* Callers store zero here to inhibit the error message `getopt' prints | ||
| 54 | for unrecognized options. */ | ||
| 55 | |||
| 56 | extern int opterr; | ||
| 57 | |||
| 58 | /* Set to an option character which was unrecognized. */ | ||
| 59 | |||
| 60 | extern int optopt; | ||
| 61 | |||
| 62 | /* Describe the long-named options requested by the application. | ||
| 63 | The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector | ||
| 64 | of `struct option' terminated by an element containing a name which is | ||
| 65 | zero. | ||
| 66 | |||
| 67 | The field `has_arg' is: | ||
| 68 | no_argument (or 0) if the option does not take an argument, | ||
| 69 | required_argument (or 1) if the option requires an argument, | ||
| 70 | optional_argument (or 2) if the option takes an optional argument. | ||
| 71 | |||
| 72 | If the field `flag' is not NULL, it points to a variable that is set | ||
| 73 | to the value given in the field `val' when the option is found, but | ||
| 74 | left unchanged if the option is not found. | ||
| 75 | |||
| 76 | To have a long-named option do something other than set an `int' to | ||
| 77 | a compiled-in constant, such as set a value from `optarg', set the | ||
| 78 | option's `flag' field to zero and its `val' field to a nonzero | ||
| 79 | value (the equivalent single-letter option character, if there is | ||
| 80 | one). For long options that have a zero `flag' field, `getopt' | ||
| 81 | returns the contents of the `val' field. */ | ||
| 82 | |||
| 83 | struct option | ||
| 84 | { | ||
| 85 | #if defined (__STDC__) && __STDC__ | ||
| 86 | const char *name; | ||
| 87 | #else | ||
| 88 | char *name; | ||
| 89 | #endif | ||
| 90 | /* has_arg can't be an enum because some compilers complain about | ||
| 91 | type mismatches in all the code that assumes it is an int. */ | ||
| 92 | int has_arg; | ||
| 93 | int *flag; | ||
| 94 | int val; | ||
| 95 | }; | ||
| 96 | |||
| 97 | /* Names for the values of the `has_arg' field of `struct option'. */ | ||
| 98 | |||
| 99 | #define no_argument 0 | ||
| 100 | #define required_argument 1 | ||
| 101 | #define optional_argument 2 | ||
| 102 | |||
| 103 | #if defined (__STDC__) && __STDC__ | ||
| 104 | #ifdef __GNU_LIBRARY__ | ||
| 105 | /* Many other libraries have conflicting prototypes for getopt, with | ||
| 106 | differences in the consts, in stdlib.h. To avoid compilation | ||
| 107 | errors, only prototype getopt for the GNU C library. */ | ||
| 108 | extern int getopt (int argc, char *const *argv, const char *shortopts); | ||
| 109 | #else /* not __GNU_LIBRARY__ */ | ||
| 110 | extern int getopt (); | ||
| 111 | #endif /* __GNU_LIBRARY__ */ | ||
| 112 | extern int getopt_long (int argc, char *const *argv, const char *shortopts, | ||
| 113 | const struct option *longopts, int *longind); | ||
| 114 | extern int getopt_long_only (int argc, char *const *argv, | ||
| 115 | const char *shortopts, | ||
| 116 | const struct option *longopts, int *longind); | ||
| 117 | |||
| 118 | /* Internal only. Users should not call this directly. */ | ||
| 119 | extern int _getopt_internal (int argc, char *const *argv, | ||
| 120 | const char *shortopts, | ||
| 121 | const struct option *longopts, int *longind, | ||
| 122 | int long_only); | ||
| 123 | #else /* not __STDC__ */ | ||
| 124 | extern int getopt (); | ||
| 125 | extern int getopt_long (); | ||
| 126 | extern int getopt_long_only (); | ||
| 127 | |||
| 128 | extern int _getopt_internal (); | ||
| 129 | #endif /* __STDC__ */ | ||
| 130 | |||
| 131 | #ifdef __cplusplus | ||
| 132 | } | ||
| 133 | #endif | ||
| 134 | |||
| 135 | #endif /* _GETOPT_H */ | ||