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272
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1 /* Internal declarations for getopt.
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2 Copyright (C) 1989-1994,1996-1999,2001,2003,2004
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3 Free Software Foundation, Inc.
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4 This file is part of the GNU C Library.
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 #ifndef _GETOPT_INT_H
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20 #define _GETOPT_INT_H 1
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21
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22 extern int _getopt_internal (int ___argc, char **___argv,
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23 const char *__shortopts,
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24 const struct option *__longopts, int *__longind,
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25 int __long_only, int __posixly_correct);
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26
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27
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28 /* Reentrant versions which can handle parsing multiple argument
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29 vectors at the same time. */
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30
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31 /* Data type for reentrant functions. */
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32 struct _getopt_data
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33 {
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34 /* These have exactly the same meaning as the corresponding global
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35 variables, except that they are used for the reentrant
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36 versions of getopt. */
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37 int optind;
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38 int opterr;
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39 int optopt;
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40 char *optarg;
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41
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42 /* Internal members. */
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43
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44 /* True if the internal members have been initialized. */
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45 int __initialized;
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46
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47 /* The next char to be scanned in the option-element
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48 in which the last option character we returned was found.
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49 This allows us to pick up the scan where we left off.
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50
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51 If this is zero, or a null string, it means resume the scan
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52 by advancing to the next ARGV-element. */
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53 char *__nextchar;
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54
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55 /* Describe how to deal with options that follow non-option ARGV-elements.
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56
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57 If the caller did not specify anything,
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58 the default is REQUIRE_ORDER if the environment variable
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59 POSIXLY_CORRECT is defined, PERMUTE otherwise.
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60
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61 REQUIRE_ORDER means don't recognize them as options;
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62 stop option processing when the first non-option is seen.
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63 This is what Unix does.
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64 This mode of operation is selected by either setting the environment
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65 variable POSIXLY_CORRECT, or using `+' as the first character
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66 of the list of option characters, or by calling getopt.
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67
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68 PERMUTE is the default. We permute the contents of ARGV as we
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69 scan, so that eventually all the non-options are at the end.
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70 This allows options to be given in any order, even with programs
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71 that were not written to expect this.
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72
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73 RETURN_IN_ORDER is an option available to programs that were
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74 written to expect options and other ARGV-elements in any order
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75 and that care about the ordering of the two. We describe each
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76 non-option ARGV-element as if it were the argument of an option
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77 with character code 1. Using `-' as the first character of the
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78 list of option characters selects this mode of operation.
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79
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80 The special argument `--' forces an end of option-scanning regardless
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81 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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82 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
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83
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84 enum
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85 {
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86 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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87 } __ordering;
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88
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89 /* If the POSIXLY_CORRECT environment variable is set
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90 or getopt was called. */
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91 int __posixly_correct;
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92
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93
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94 /* Handle permutation of arguments. */
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95
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96 /* Describe the part of ARGV that contains non-options that have
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97 been skipped. `first_nonopt' is the index in ARGV of the first
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98 of them; `last_nonopt' is the index after the last of them. */
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99
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100 int __first_nonopt;
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101 int __last_nonopt;
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102
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103 #if defined _LIBC && defined USE_NONOPTION_FLAGS
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104 int __nonoption_flags_max_len;
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105 int __nonoption_flags_len;
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106 # endif
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107 };
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108
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109 /* The initializer is necessary to set OPTIND and OPTERR to their
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110 default values and to clear the initialization flag. */
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111 #define _GETOPT_DATA_INITIALIZER { 1, 1 }
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112
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113 extern int _getopt_internal_r (int ___argc, char **___argv,
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114 const char *__shortopts,
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115 const struct option *__longopts, int *__longind,
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116 int __long_only, int __posixly_correct,
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117 struct _getopt_data *__data);
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118
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119 extern int _getopt_long_r (int ___argc, char **___argv,
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120 const char *__shortopts,
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121 const struct option *__longopts, int *__longind,
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122 struct _getopt_data *__data);
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123
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124 extern int _getopt_long_only_r (int ___argc, char **___argv,
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125 const char *__shortopts,
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126 const struct option *__longopts,
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127 int *__longind,
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128 struct _getopt_data *__data);
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129
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130 #endif /* getopt_int.h */
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