1 | /* Getopt for GNU.
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2 | NOTE: getopt is now part of the C library, so if you don't know what
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3 | "Keep this file name-space clean" means, talk to [email protected]
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4 | before changing it!
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5 |
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6 | Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
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7 | Free Software Foundation, Inc.
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8 |
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9 | This program is free software; you can redistribute it and/or modify it
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10 | under the terms of the GNU General Public License as published by the
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11 | Free Software Foundation; either version 2, or (at your option) any
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12 | later version.
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13 |
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14 | This program is distributed in the hope that it will be useful,
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 | GNU General Public License for more details.
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18 |
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19 | You should have received a copy of the GNU General Public License
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20 | along with this program; if not, write to the Free Software
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21 | Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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22 | |
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23 |
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24 | #ifdef HAVE_CONFIG_H
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25 | #include "sysfuncs.h"
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26 | #endif
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27 |
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28 | #if !__STDC__ && !defined(const) && IN_GCC
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29 | #define const
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30 | #endif
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31 |
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32 | /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */
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33 | #ifndef _NO_PROTO
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34 | #define _NO_PROTO
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35 | #endif
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36 |
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37 | #include <stdio.h>
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38 |
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39 | /* Comment out all this code if we are using the GNU C Library, and are not
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40 | actually compiling the library itself. This code is part of the GNU C
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41 | Library, but also included in many other GNU distributions. Compiling
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42 | and linking in this code is a waste when using the GNU C library
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43 | (especially if it is a shared library). Rather than having every GNU
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44 | program understand `configure --with-gnu-libc' and omit the object files,
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45 | it is simpler to just do this in the source for each such file. */
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46 |
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47 | #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
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48 |
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49 |
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50 | /* This needs to come after some library #include
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51 | to get __GNU_LIBRARY__ defined. */
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52 | #ifdef __GNU_LIBRARY__
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53 | /* Don't include stdlib.h for non-GNU C libraries because some of them
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54 | contain conflicting prototypes for getopt. */
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55 | #include <stdlib.h>
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56 | #endif /* GNU C library. */
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57 |
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58 | /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a
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59 | long-named option. Because this is not POSIX.2 compliant, it is
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60 | being phased out. */
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61 | /* #define GETOPT_COMPAT */
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62 |
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63 | /* This version of `getopt' appears to the caller like standard Unix `getopt'
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64 | but it behaves differently for the user, since it allows the user
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65 | to intersperse the options with the other arguments.
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66 |
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67 | As `getopt' works, it permutes the elements of ARGV so that,
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68 | when it is done, all the options precede everything else. Thus
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69 | all application programs are extended to handle flexible argument order.
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70 |
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71 | Setting the environment variable POSIXLY_CORRECT disables permutation.
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72 | Then the behavior is completely standard.
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73 |
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74 | GNU application programs can use a third alternative mode in which
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75 | they can distinguish the relative order of options and other arguments. */
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76 |
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77 | #include "getopt.h"
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78 |
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79 | /* For communication from `getopt' to the caller.
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80 | When `getopt' finds an option that takes an argument,
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81 | the argument value is returned here.
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82 | Also, when `ordering' is RETURN_IN_ORDER,
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83 | each non-option ARGV-element is returned here. */
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84 |
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85 | char *optarg = 0;
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86 |
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87 | /* Index in ARGV of the next element to be scanned.
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88 | This is used for communication to and from the caller
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89 | and for communication between successive calls to `getopt'.
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90 |
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91 | On entry to `getopt', zero means this is the first call; initialize.
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92 |
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93 | When `getopt' returns EOF, this is the index of the first of the
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94 | non-option elements that the caller should itself scan.
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95 |
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96 | Otherwise, `optind' communicates from one call to the next
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97 | how much of ARGV has been scanned so far. */
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98 |
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99 | /* XXX 1003.2 says this must be 1 before any call. */
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100 | int optind = 0;
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101 |
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102 | /* The next char to be scanned in the option-element
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103 | in which the last option character we returned was found.
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104 | This allows us to pick up the scan where we left off.
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105 |
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106 | If this is zero, or a null string, it means resume the scan
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107 | by advancing to the next ARGV-element. */
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108 |
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109 | static char *nextchar;
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110 |
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111 | /* Callers store zero here to inhibit the error message
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112 | for unrecognized options. */
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113 |
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114 | int opterr = 1;
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115 |
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116 | /* Set to an option character which was unrecognized.
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117 | This must be initialized on some systems to avoid linking in the
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118 | system's own getopt implementation. */
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119 |
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120 | int optopt = '?';
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121 |
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122 | /* Describe how to deal with options that follow non-option ARGV-elements.
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123 |
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124 | If the caller did not specify anything,
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125 | the default is REQUIRE_ORDER if the environment variable
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126 | POSIXLY_CORRECT is defined, PERMUTE otherwise.
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127 |
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128 | REQUIRE_ORDER means don't recognize them as options;
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129 | stop option processing when the first non-option is seen.
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130 | This is what Unix does.
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131 | This mode of operation is selected by either setting the environment
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132 | variable POSIXLY_CORRECT, or using `+' as the first character
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133 | of the list of option characters.
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134 |
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135 | PERMUTE is the default. We permute the contents of ARGV as we scan,
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136 | so that eventually all the non-options are at the end. This allows options
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137 | to be given in any order, even with programs that were not written to
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138 | expect this.
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139 |
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140 | RETURN_IN_ORDER is an option available to programs that were written
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141 | to expect options and other ARGV-elements in any order and that care about
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142 | the ordering of the two. We describe each non-option ARGV-element
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143 | as if it were the argument of an option with character code 1.
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144 | Using `-' as the first character of the list of option characters
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145 | selects this mode of operation.
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146 |
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147 | The special argument `--' forces an end of option-scanning regardless
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148 | of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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149 | `--' can cause `getopt' to return EOF with `optind' != ARGC. */
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150 |
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151 | static enum
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152 | {
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153 | REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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154 | }
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155 | ordering;
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156 | |
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157 |
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158 | #ifdef __GNU_LIBRARY__
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159 | /* We want to avoid inclusion of string.h with non-GNU libraries
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160 | because there are many ways it can cause trouble.
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161 | On some systems, it contains special magic macros that don't work
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162 | in GCC. */
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163 | #include <string.h>
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164 | #define my_index strchr
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165 | #else
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166 |
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167 | /* Avoid depending on library functions or files
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168 | whose names are inconsistent. */
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169 |
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170 | char *getenv ();
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171 |
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172 | static char *
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173 | my_index (const char *str, int chr)
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174 | {
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175 | while (*str)
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176 | {
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177 | if (*str == chr)
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178 | return (char *) str;
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179 | str++;
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180 | }
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181 | return 0;
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182 | }
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183 |
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184 | /* If using GCC, we can safely declare strlen this way.
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185 | If not using GCC, it is ok not to declare it. */
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186 | #ifdef __GNUC__
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187 | #ifdef IN_GCC
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188 | #include "gstddef.h"
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189 | #else
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190 | #include <stddef.h>
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191 | #endif
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192 | extern size_t strlen (const char *);
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193 | #endif
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194 |
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195 | #endif /* GNU C library. */
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196 | |
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197 |
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198 | /* Handle permutation of arguments. */
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199 |
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200 | /* Describe the part of ARGV that contains non-options that have
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201 | been skipped. `first_nonopt' is the index in ARGV of the first of them;
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202 | `last_nonopt' is the index after the last of them. */
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203 |
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204 | static int first_nonopt;
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205 | static int last_nonopt;
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206 |
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207 | /* Exchange two adjacent subsequences of ARGV.
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208 | One subsequence is elements [first_nonopt,last_nonopt)
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209 | which contains all the non-options that have been skipped so far.
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210 | The other is elements [last_nonopt,optind), which contains all
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211 | the options processed since those non-options were skipped.
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212 |
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213 | `first_nonopt' and `last_nonopt' are relocated so that they describe
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214 | the new indices of the non-options in ARGV after they are moved. */
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215 |
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216 | static void
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217 | exchange (char **argv)
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218 | {
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219 | int bottom = first_nonopt;
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220 | int middle = last_nonopt;
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221 | int top = optind;
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222 | char *tem;
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223 |
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224 | /* Exchange the shorter segment with the far end of the longer segment.
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225 | That puts the shorter segment into the right place.
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226 | It leaves the longer segment in the right place overall,
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227 | but it consists of two parts that need to be swapped next. */
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228 |
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229 | while (top > middle && middle > bottom)
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230 | {
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231 | if (top - middle > middle - bottom)
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232 | {
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233 | /* Bottom segment is the short one. */
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234 | int len = middle - bottom;
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235 | register int i;
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236 |
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237 | /* Swap it with the top part of the top segment. */
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238 | for (i = 0; i < len; i++)
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239 | {
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240 | tem = argv[bottom + i];
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241 | argv[bottom + i] = argv[top - (middle - bottom) + i];
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242 | argv[top - (middle - bottom) + i] = tem;
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243 | }
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244 | /* Exclude the moved bottom segment from further swapping. */
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245 | top -= len;
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246 | }
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247 | else
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248 | {
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249 | /* Top segment is the short one. */
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250 | int len = top - middle;
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251 | register int i;
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252 |
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253 | /* Swap it with the bottom part of the bottom segment. */
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254 | for (i = 0; i < len; i++)
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255 | {
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256 | tem = argv[bottom + i];
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257 | argv[bottom + i] = argv[middle + i];
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258 | argv[middle + i] = tem;
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259 | }
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260 | /* Exclude the moved top segment from further swapping. */
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261 | bottom += len;
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262 | }
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263 | }
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264 |
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265 | /* Update records for the slots the non-options now occupy. */
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266 |
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267 | first_nonopt += (optind - last_nonopt);
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268 | last_nonopt = optind;
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269 | }
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270 | |
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271 |
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272 | /* Scan elements of ARGV (whose length is ARGC) for option characters
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273 | given in OPTSTRING.
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274 |
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275 | If an element of ARGV starts with '-', and is not exactly "-" or "--",
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276 | then it is an option element. The characters of this element
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277 | (aside from the initial '-') are option characters. If `getopt'
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278 | is called repeatedly, it returns successively each of the option characters
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279 | from each of the option elements.
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280 |
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281 | If `getopt' finds another option character, it returns that character,
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282 | updating `optind' and `nextchar' so that the next call to `getopt' can
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283 | resume the scan with the following option character or ARGV-element.
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284 |
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285 | If there are no more option characters, `getopt' returns `EOF'.
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286 | Then `optind' is the index in ARGV of the first ARGV-element
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287 | that is not an option. (The ARGV-elements have been permuted
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288 | so that those that are not options now come last.)
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289 |
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290 | OPTSTRING is a string containing the legitimate option characters.
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291 | If an option character is seen that is not listed in OPTSTRING,
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292 | return '?' after printing an error message. If you set `opterr' to
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293 | zero, the error message is suppressed but we still return '?'.
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294 |
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295 | If a char in OPTSTRING is followed by a colon, that means it wants an arg,
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296 | so the following text in the same ARGV-element, or the text of the following
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297 | ARGV-element, is returned in `optarg'. Two colons mean an option that
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298 | wants an optional arg; if there is text in the current ARGV-element,
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299 | it is returned in `optarg', otherwise `optarg' is set to zero.
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300 |
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301 | If OPTSTRING starts with `-' or `+', it requests different methods of
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302 | handling the non-option ARGV-elements.
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303 | See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
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304 |
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305 | Long-named options begin with `--' instead of `-'.
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306 | Their names may be abbreviated as long as the abbreviation is unique
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307 | or is an exact match for some defined option. If they have an
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308 | argument, it follows the option name in the same ARGV-element, separated
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309 | from the option name by a `=', or else the in next ARGV-element.
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310 | When `getopt' finds a long-named option, it returns 0 if that option's
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311 | `flag' field is nonzero, the value of the option's `val' field
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312 | if the `flag' field is zero.
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313 |
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314 | The elements of ARGV aren't really const, because we permute them.
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315 | But we pretend they're const in the prototype to be compatible
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316 | with other systems.
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317 |
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318 | LONGOPTS is a vector of `struct option' terminated by an
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319 | element containing a name which is zero.
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320 |
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321 | LONGIND returns the index in LONGOPT of the long-named option found.
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322 | It is only valid when a long-named option has been found by the most
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323 | recent call.
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324 |
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325 | If LONG_ONLY is nonzero, '-' as well as '--' can introduce
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326 | long-named options. */
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327 |
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328 | int
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329 | _getopt_internal (int argc, char *const *argv, const char *optstring, const struct option *longopts, int *longind, int long_only)
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330 | {
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331 | int option_index;
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332 |
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333 | optarg = 0;
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334 |
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335 | /* Initialize the internal data when the first call is made.
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336 | Start processing options with ARGV-element 1 (since ARGV-element 0
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337 | is the program name); the sequence of previously skipped
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338 | non-option ARGV-elements is empty. */
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339 |
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340 | if (optind == 0)
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341 | {
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342 | first_nonopt = last_nonopt = optind = 1;
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343 |
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344 | nextchar = NULL;
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345 |
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346 | /* Determine how to handle the ordering of options and nonoptions. */
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347 |
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348 | if (optstring[0] == '-')
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349 | {
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350 | ordering = RETURN_IN_ORDER;
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351 | ++optstring;
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352 | }
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353 | else if (optstring[0] == '+')
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354 | {
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355 | ordering = REQUIRE_ORDER;
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356 | ++optstring;
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357 | }
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358 | else if (getenv ("POSIXLY_CORRECT") != NULL)
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359 | ordering = REQUIRE_ORDER;
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360 | else
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361 | ordering = PERMUTE;
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362 | }
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363 |
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364 | if (nextchar == NULL || *nextchar == '\0')
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365 | {
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366 | if (ordering == PERMUTE)
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367 | {
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368 | /* If we have just processed some options following some non-options,
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369 | exchange them so that the options come first. */
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370 |
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371 | if (first_nonopt != last_nonopt && last_nonopt != optind)
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372 | exchange ((char **) argv);
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373 | else if (last_nonopt != optind)
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374 | first_nonopt = optind;
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375 |
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376 | /* Now skip any additional non-options
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377 | and extend the range of non-options previously skipped. */
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378 |
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379 | while (optind < argc
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380 | && (argv[optind][0] != '-' || argv[optind][1] == '\0')
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381 | #ifdef GETOPT_COMPAT
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382 | && (longopts == NULL
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383 | || argv[optind][0] != '+' || argv[optind][1] == '\0')
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384 | #endif /* GETOPT_COMPAT */
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385 | )
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386 | optind++;
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387 | last_nonopt = optind;
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388 | }
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389 |
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390 | /* Special ARGV-element `--' means premature end of options.
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391 | Skip it like a null option,
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392 | then exchange with previous non-options as if it were an option,
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393 | then skip everything else like a non-option. */
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394 |
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395 | if (optind != argc && !strcmp (argv[optind], "--"))
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396 | {
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397 | optind++;
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398 |
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399 | if (first_nonopt != last_nonopt && last_nonopt != optind)
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400 | exchange ((char **) argv);
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401 | else if (first_nonopt == last_nonopt)
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402 | first_nonopt = optind;
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403 | last_nonopt = argc;
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404 |
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405 | optind = argc;
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406 | }
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407 |
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408 | /* If we have done all the ARGV-elements, stop the scan
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409 | and back over any non-options that we skipped and permuted. */
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410 |
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411 | if (optind == argc)
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412 | {
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413 | /* Set the next-arg-index to point at the non-options
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414 | that we previously skipped, so the caller will digest them. */
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415 | if (first_nonopt != last_nonopt)
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416 | optind = first_nonopt;
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417 | return EOF;
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418 | }
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419 |
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420 | /* If we have come to a non-option and did not permute it,
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421 | either stop the scan or describe it to the caller and pass it by. */
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422 |
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423 | if ((argv[optind][0] != '-' || argv[optind][1] == '\0')
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424 | #ifdef GETOPT_COMPAT
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425 | && (longopts == NULL
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426 | || argv[optind][0] != '+' || argv[optind][1] == '\0')
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427 | #endif /* GETOPT_COMPAT */
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428 | )
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429 | {
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430 | if (ordering == REQUIRE_ORDER)
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431 | return EOF;
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432 | optarg = argv[optind++];
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433 | return 1;
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434 | }
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435 |
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436 | /* We have found another option-ARGV-element.
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437 | Start decoding its characters. */
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438 |
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439 | nextchar = (argv[optind] + 1
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440 | + (longopts != NULL && argv[optind][1] == '-'));
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441 | }
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442 |
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443 | if (longopts != NULL
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444 | && ((argv[optind][0] == '-'
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445 | && (argv[optind][1] == '-' || long_only))
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446 | #ifdef GETOPT_COMPAT
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447 | || argv[optind][0] == '+'
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448 | #endif /* GETOPT_COMPAT */
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449 | ))
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450 | {
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451 | const struct option *p;
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452 | char *s = nextchar;
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453 | int exact = 0;
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454 | int ambig = 0;
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455 | const struct option *pfound = NULL;
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456 | int indfound;
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457 |
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458 | while (*s && *s != '=')
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459 | s++;
|
---|
460 |
|
---|
461 | /* Test all options for either exact match or abbreviated matches. */
|
---|
462 | for (p = longopts, option_index = 0; p->name;
|
---|
463 | p++, option_index++)
|
---|
464 | if (!strncmp (p->name, nextchar, s - nextchar))
|
---|
465 | {
|
---|
466 | if (s - nextchar == strlen (p->name))
|
---|
467 | {
|
---|
468 | /* Exact match found. */
|
---|
469 | pfound = p;
|
---|
470 | indfound = option_index;
|
---|
471 | exact = 1;
|
---|
472 | break;
|
---|
473 | }
|
---|
474 | else if (pfound == NULL)
|
---|
475 | {
|
---|
476 | /* First nonexact match found. */
|
---|
477 | pfound = p;
|
---|
478 | indfound = option_index;
|
---|
479 | }
|
---|
480 | else
|
---|
481 | /* Second nonexact match found. */
|
---|
482 | ambig = 1;
|
---|
483 | }
|
---|
484 |
|
---|
485 | if (ambig && !exact)
|
---|
486 | {
|
---|
487 | if (opterr)
|
---|
488 | fprintf (stderr, "%s: option `%s' is ambiguous\n",
|
---|
489 | argv[0], argv[optind]);
|
---|
490 | nextchar += strlen (nextchar);
|
---|
491 | optind++;
|
---|
492 | return '?';
|
---|
493 | }
|
---|
494 |
|
---|
495 | if (pfound != NULL)
|
---|
496 | {
|
---|
497 | option_index = indfound;
|
---|
498 | optind++;
|
---|
499 | if (*s)
|
---|
500 | {
|
---|
501 | /* Don't test has_arg with >, because some C compilers don't
|
---|
502 | allow it to be used on enums. */
|
---|
503 | if (pfound->has_arg)
|
---|
504 | optarg = s + 1;
|
---|
505 | else
|
---|
506 | {
|
---|
507 | if (opterr)
|
---|
508 | {
|
---|
509 | if (argv[optind - 1][1] == '-')
|
---|
510 | /* --option */
|
---|
511 | fprintf (stderr,
|
---|
512 | "%s: option `--%s' doesn't allow an argument\n",
|
---|
513 | argv[0], pfound->name);
|
---|
514 | else
|
---|
515 | /* +option or -option */
|
---|
516 | fprintf (stderr,
|
---|
517 | "%s: option `%c%s' doesn't allow an argument\n",
|
---|
518 | argv[0], argv[optind - 1][0], pfound->name);
|
---|
519 | }
|
---|
520 | nextchar += strlen (nextchar);
|
---|
521 | return '?';
|
---|
522 | }
|
---|
523 | }
|
---|
524 | else if (pfound->has_arg == 1)
|
---|
525 | {
|
---|
526 | if (optind < argc)
|
---|
527 | optarg = argv[optind++];
|
---|
528 | else
|
---|
529 | {
|
---|
530 | if (opterr)
|
---|
531 | fprintf (stderr, "%s: option `%s' requires an argument\n",
|
---|
532 | argv[0], argv[optind - 1]);
|
---|
533 | nextchar += strlen (nextchar);
|
---|
534 | return optstring[0] == ':' ? ':' : '?';
|
---|
535 | }
|
---|
536 | }
|
---|
537 | nextchar += strlen (nextchar);
|
---|
538 | if (longind != NULL)
|
---|
539 | *longind = option_index;
|
---|
540 | if (pfound->flag)
|
---|
541 | {
|
---|
542 | *(pfound->flag) = pfound->val;
|
---|
543 | return 0;
|
---|
544 | }
|
---|
545 | return pfound->val;
|
---|
546 | }
|
---|
547 | /* Can't find it as a long option. If this is not getopt_long_only,
|
---|
548 | or the option starts with '--' or is not a valid short
|
---|
549 | option, then it's an error.
|
---|
550 | Otherwise interpret it as a short option. */
|
---|
551 | if (!long_only || argv[optind][1] == '-'
|
---|
552 | #ifdef GETOPT_COMPAT
|
---|
553 | || argv[optind][0] == '+'
|
---|
554 | #endif /* GETOPT_COMPAT */
|
---|
555 | || my_index (optstring, *nextchar) == NULL)
|
---|
556 | {
|
---|
557 | if (opterr)
|
---|
558 | {
|
---|
559 | if (argv[optind][1] == '-')
|
---|
560 | /* --option */
|
---|
561 | fprintf (stderr, "%s: unrecognized option `--%s'\n",
|
---|
562 | argv[0], nextchar);
|
---|
563 | else
|
---|
564 | /* +option or -option */
|
---|
565 | fprintf (stderr, "%s: unrecognized option `%c%s'\n",
|
---|
566 | argv[0], argv[optind][0], nextchar);
|
---|
567 | }
|
---|
568 | nextchar = (char *) "";
|
---|
569 | optind++;
|
---|
570 | return '?';
|
---|
571 | }
|
---|
572 | }
|
---|
573 |
|
---|
574 | /* Look at and handle the next option-character. */
|
---|
575 |
|
---|
576 | {
|
---|
577 | char c = *nextchar++;
|
---|
578 | char *temp = my_index (optstring, c);
|
---|
579 |
|
---|
580 | /* Increment `optind' when we start to process its last character. */
|
---|
581 | if (*nextchar == '\0')
|
---|
582 | ++optind;
|
---|
583 |
|
---|
584 | if (temp == NULL || c == ':')
|
---|
585 | {
|
---|
586 | if (opterr)
|
---|
587 | {
|
---|
588 | #if 0
|
---|
589 | if (c < 040 || c >= 0177)
|
---|
590 | fprintf (stderr, "%s: unrecognized option, character code 0%o\n",
|
---|
591 | argv[0], c);
|
---|
592 | else
|
---|
593 | fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c);
|
---|
594 | #else
|
---|
595 | /* 1003.2 specifies the format of this message. */
|
---|
596 | fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c);
|
---|
597 | #endif
|
---|
598 | }
|
---|
599 | optopt = c;
|
---|
600 | return '?';
|
---|
601 | }
|
---|
602 | if (temp[1] == ':')
|
---|
603 | {
|
---|
604 | if (temp[2] == ':')
|
---|
605 | {
|
---|
606 | /* This is an option that accepts an argument optionally. */
|
---|
607 | if (*nextchar != '\0')
|
---|
608 | {
|
---|
609 | optarg = nextchar;
|
---|
610 | optind++;
|
---|
611 | }
|
---|
612 | else
|
---|
613 | optarg = 0;
|
---|
614 | nextchar = NULL;
|
---|
615 | }
|
---|
616 | else
|
---|
617 | {
|
---|
618 | /* This is an option that requires an argument. */
|
---|
619 | if (*nextchar != '\0')
|
---|
620 | {
|
---|
621 | optarg = nextchar;
|
---|
622 | /* If we end this ARGV-element by taking the rest as an arg,
|
---|
623 | we must advance to the next element now. */
|
---|
624 | optind++;
|
---|
625 | }
|
---|
626 | else if (optind == argc)
|
---|
627 | {
|
---|
628 | if (opterr)
|
---|
629 | {
|
---|
630 | #if 0
|
---|
631 | fprintf (stderr, "%s: option `-%c' requires an argument\n",
|
---|
632 | argv[0], c);
|
---|
633 | #else
|
---|
634 | /* 1003.2 specifies the format of this message. */
|
---|
635 | fprintf (stderr, "%s: option requires an argument -- %c\n",
|
---|
636 | argv[0], c);
|
---|
637 | #endif
|
---|
638 | }
|
---|
639 | optopt = c;
|
---|
640 | if (optstring[0] == ':')
|
---|
641 | c = ':';
|
---|
642 | else
|
---|
643 | c = '?';
|
---|
644 | }
|
---|
645 | else
|
---|
646 | /* We already incremented `optind' once;
|
---|
647 | increment it again when taking next ARGV-elt as argument. */
|
---|
648 | optarg = argv[optind++];
|
---|
649 | nextchar = NULL;
|
---|
650 | }
|
---|
651 | }
|
---|
652 | return c;
|
---|
653 | }
|
---|
654 | }
|
---|
655 |
|
---|
656 | int
|
---|
657 | getopt (int argc, char *const *argv, const char *optstring)
|
---|
658 | {
|
---|
659 | return _getopt_internal (argc, argv, optstring,
|
---|
660 | (const struct option *) 0,
|
---|
661 | (int *) 0,
|
---|
662 | 0);
|
---|
663 | }
|
---|
664 |
|
---|
665 | #endif /* _LIBC or not __GNU_LIBRARY__. */
|
---|
666 | |
---|
667 |
|
---|
668 | #ifdef TEST
|
---|
669 |
|
---|
670 | /* Compile with -DTEST to make an executable for use in testing
|
---|
671 | the above definition of `getopt'. */
|
---|
672 |
|
---|
673 | int
|
---|
674 | main (int argc, char **argv)
|
---|
675 | {
|
---|
676 | int c;
|
---|
677 | int digit_optind = 0;
|
---|
678 |
|
---|
679 | while (1)
|
---|
680 | {
|
---|
681 | int this_option_optind = optind ? optind : 1;
|
---|
682 |
|
---|
683 | c = getopt (argc, argv, "abc:d:0123456789");
|
---|
684 | if (c == EOF)
|
---|
685 | break;
|
---|
686 |
|
---|
687 | switch (c)
|
---|
688 | {
|
---|
689 | case '0':
|
---|
690 | case '1':
|
---|
691 | case '2':
|
---|
692 | case '3':
|
---|
693 | case '4':
|
---|
694 | case '5':
|
---|
695 | case '6':
|
---|
696 | case '7':
|
---|
697 | case '8':
|
---|
698 | case '9':
|
---|
699 | if (digit_optind != 0 && digit_optind != this_option_optind)
|
---|
700 | printf ("digits occur in two different argv-elements.\n");
|
---|
701 | digit_optind = this_option_optind;
|
---|
702 | printf ("option %c\n", c);
|
---|
703 | break;
|
---|
704 |
|
---|
705 | case 'a':
|
---|
706 | printf ("option a\n");
|
---|
707 | break;
|
---|
708 |
|
---|
709 | case 'b':
|
---|
710 | printf ("option b\n");
|
---|
711 | break;
|
---|
712 |
|
---|
713 | case 'c':
|
---|
714 | printf ("option c with value `%s'\n", optarg);
|
---|
715 | break;
|
---|
716 |
|
---|
717 | case '?':
|
---|
718 | break;
|
---|
719 |
|
---|
720 | default:
|
---|
721 | printf ("?? getopt returned character code 0%o ??\n", c);
|
---|
722 | }
|
---|
723 | }
|
---|
724 |
|
---|
725 | if (optind < argc)
|
---|
726 | {
|
---|
727 | printf ("non-option ARGV-elements: ");
|
---|
728 | while (optind < argc)
|
---|
729 | printf ("%s ", argv[optind++]);
|
---|
730 | printf ("\n");
|
---|
731 | }
|
---|
732 |
|
---|
733 | exit (0);
|
---|
734 | }
|
---|
735 |
|
---|
736 | #endif /* TEST */
|
---|