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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 roland@gnu.ai.mit.edu
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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, 93, 94, 95, 96, 97
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7 Free Software Foundation, Inc.
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8
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155
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9 NOTE: The canonical source of this file is maintained with the GNU C Library.
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10 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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11
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12 This program is free software; you can redistribute it and/or modify it
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13 under the terms of the GNU General Public License as published by the
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14 Free Software Foundation; either version 2, or (at your option) any
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15 later version.
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16
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17 This program is distributed in the hope that it will be useful,
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18 but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 GNU General Public License for more details.
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21
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22 You should have received a copy of the GNU General Public License
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23 along with this program; if not, write to the Free Software
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24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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25 USA. */
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26
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27 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
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28 Ditto for AIX 3.2 and <stdlib.h>. */
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29 #ifndef _NO_PROTO
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30 #define _NO_PROTO
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31 #endif
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32
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33 #ifdef HAVE_CONFIG_H
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34 #include <config.h>
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35 #endif
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36
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37 #if !defined (__STDC__) || !__STDC__
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38 /* This is a separate conditional since some stdc systems
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39 reject `defined (const)'. */
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40 #ifndef const
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41 #define const
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42 #endif
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43 #endif
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44
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45 #include <stdio.h>
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155
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46 #ifdef STDC_HEADERS
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47 #include <string.h>
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48 #include <stdlib.h>
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155
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49 #endif
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50
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51 /* Comment out all this code if we are using the GNU C Library, and are not
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52 actually compiling the library itself. This code is part of the GNU C
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53 Library, but also included in many other GNU distributions. Compiling
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54 and linking in this code is a waste when using the GNU C library
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55 (especially if it is a shared library). Rather than having every GNU
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56 program understand `configure --with-gnu-libc' and omit the object files,
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57 it is simpler to just do this in the source for each such file. */
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58
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59 #define GETOPT_INTERFACE_VERSION 2
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60 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
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61 #include <gnu-versions.h>
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62 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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63 #define ELIDE_CODE
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64 #endif
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65 #endif
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66
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67 #ifndef ELIDE_CODE
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68
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69
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70 /* This needs to come after some library #include
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71 to get __GNU_LIBRARY__ defined. */
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72 #ifdef __GNU_LIBRARY__
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73 /* Don't include stdlib.h for non-GNU C libraries because some of them
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74 contain conflicting prototypes for getopt. */
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75 #include <stdlib.h>
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155
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76 #include <unistd.h>
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77 #endif /* GNU C library. */
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78
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155
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79 #ifdef VMS
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80 #include <unixlib.h>
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81 #if HAVE_STRING_H - 0
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82 #include <string.h>
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83 #endif
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84 #endif
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85
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86 #if defined (WIN32) && !defined (__CYGWIN32__)
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87 /* It's not Unix, really. See? Capital letters. */
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88 #include <windows.h>
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89 #define getpid() GetCurrentProcessId()
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90 #endif
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91
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92 #ifndef _
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93 /* This is for other GNU distributions with internationalized messages.
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94 When compiling libc, the _ macro is predefined. */
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95 #ifdef HAVE_LIBINTL_H
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96 # include <libintl.h>
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97 # define _(msgid) gettext (msgid)
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98 #else
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99 # define _(msgid) (msgid)
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100 #endif
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101 #endif
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102
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103 /* This version of `getopt' appears to the caller like standard Unix `getopt'
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104 but it behaves differently for the user, since it allows the user
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105 to intersperse the options with the other arguments.
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106
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107 As `getopt' works, it permutes the elements of ARGV so that,
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108 when it is done, all the options precede everything else. Thus
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109 all application programs are extended to handle flexible argument order.
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110
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111 Setting the environment variable POSIXLY_CORRECT disables permutation.
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112 Then the behavior is completely standard.
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113
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114 GNU application programs can use a third alternative mode in which
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115 they can distinguish the relative order of options and other arguments. */
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116
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117 #include "getopt.h"
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118
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119 /* For communication from `getopt' to the caller.
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120 When `getopt' finds an option that takes an argument,
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121 the argument value is returned here.
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122 Also, when `ordering' is RETURN_IN_ORDER,
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123 each non-option ARGV-element is returned here. */
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124
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125 char *optarg = NULL;
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126
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127 /* Index in ARGV of the next element to be scanned.
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128 This is used for communication to and from the caller
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129 and for communication between successive calls to `getopt'.
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130
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131 On entry to `getopt', zero means this is the first call; initialize.
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132
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133 When `getopt' returns -1, this is the index of the first of the
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134 non-option elements that the caller should itself scan.
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135
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136 Otherwise, `optind' communicates from one call to the next
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137 how much of ARGV has been scanned so far. */
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138
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139 /* 1003.2 says this must be 1 before any call. */
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140 int optind = 1;
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141
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142 /* Formerly, initialization of getopt depended on optind==0, which
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143 causes problems with re-calling getopt as programs generally don't
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144 know that. */
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145
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146 int __getopt_initialized = 0;
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0
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147
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148 /* The next char to be scanned in the option-element
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149 in which the last option character we returned was found.
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150 This allows us to pick up the scan where we left off.
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151
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152 If this is zero, or a null string, it means resume the scan
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153 by advancing to the next ARGV-element. */
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154
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155 static char *nextchar;
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156
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157 /* Callers store zero here to inhibit the error message
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158 for unrecognized options. */
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159
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160 int opterr = 1;
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161
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162 /* Set to an option character which was unrecognized.
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163 This must be initialized on some systems to avoid linking in the
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164 system's own getopt implementation. */
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165
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166 int optopt = '?';
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167
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168 /* Describe how to deal with options that follow non-option ARGV-elements.
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169
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170 If the caller did not specify anything,
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171 the default is REQUIRE_ORDER if the environment variable
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172 POSIXLY_CORRECT is defined, PERMUTE otherwise.
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173
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174 REQUIRE_ORDER means don't recognize them as options;
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175 stop option processing when the first non-option is seen.
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176 This is what Unix does.
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177 This mode of operation is selected by either setting the environment
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178 variable POSIXLY_CORRECT, or using `+' as the first character
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179 of the list of option characters.
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180
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181 PERMUTE is the default. We permute the contents of ARGV as we scan,
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182 so that eventually all the non-options are at the end. This allows options
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183 to be given in any order, even with programs that were not written to
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184 expect this.
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185
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186 RETURN_IN_ORDER is an option available to programs that were written
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187 to expect options and other ARGV-elements in any order and that care about
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188 the ordering of the two. We describe each non-option ARGV-element
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189 as if it were the argument of an option with character code 1.
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190 Using `-' as the first character of the list of option characters
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191 selects this mode of operation.
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192
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193 The special argument `--' forces an end of option-scanning regardless
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194 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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195 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
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196
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197 static enum
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198 {
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199 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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200 } ordering;
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201
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202 /* Value of POSIXLY_CORRECT environment variable. */
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203 static char *posixly_correct;
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204
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205 #ifdef __GNU_LIBRARY__
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206 /* We want to avoid inclusion of string.h with non-GNU libraries
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207 because there are many ways it can cause trouble.
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208 On some systems, it contains special magic macros that don't work
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209 in GCC. */
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210 #include <string.h>
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211 #define my_index strchr
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212 #else
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213
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214 /* Avoid depending on library functions or files
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215 whose names are inconsistent. */
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216
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217 char *getenv ();
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218
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219 static char *
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220 my_index (const char *str, int chr)
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221 {
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222 while (*str)
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223 {
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224 if (*str == chr)
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225 return (char *) str;
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226 str++;
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227 }
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228 return 0;
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229 }
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230
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231 /* If using GCC, we can safely declare strlen this way.
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232 If not using GCC, it is ok not to declare it. */
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233 #ifdef __GNUC__
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234 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
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235 That was relevant to code that was here before. */
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236 #if !defined (__STDC__) || !__STDC__
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237 /* gcc with -traditional declares the built-in strlen to return int,
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238 and has done so at least since version 2.4.5. -- rms. */
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239 extern int strlen (const char *);
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240 #endif /* not __STDC__ */
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241 #endif /* __GNUC__ */
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242
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243 #endif /* not __GNU_LIBRARY__ */
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244
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245 /* Handle permutation of arguments. */
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246
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247 /* Describe the part of ARGV that contains non-options that have
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248 been skipped. `first_nonopt' is the index in ARGV of the first of them;
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249 `last_nonopt' is the index after the last of them. */
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250
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251 static int first_nonopt;
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252 static int last_nonopt;
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253
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155
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254 #ifdef _LIBC
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255 /* Bash 2.0 gives us an environment variable containing flags
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256 indicating ARGV elements that should not be considered arguments. */
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257
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258 /* Defined in getopt_init.c */
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259 extern char *__getopt_nonoption_flags;
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260
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261 static int nonoption_flags_max_len;
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262 static int nonoption_flags_len;
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263
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264 static int original_argc;
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265 static char *const *original_argv;
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266
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267 extern pid_t __libc_pid;
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268
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269 /* Make sure the environment variable bash 2.0 puts in the environment
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270 is valid for the getopt call we must make sure that the ARGV passed
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271 to getopt is that one passed to the process. */
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272 static void
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273 __attribute__ ((unused))
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274 store_args_and_env (int argc, char *const *argv)
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275 {
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276 /* XXX This is no good solution. We should rather copy the args so
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277 that we can compare them later. But we must not use malloc(3). */
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278 original_argc = argc;
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279 original_argv = argv;
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280 }
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281 text_set_element (__libc_subinit, store_args_and_env);
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282
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283 # define SWAP_FLAGS(ch1, ch2) \
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284 if (nonoption_flags_len > 0) \
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285 { \
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286 char __tmp = __getopt_nonoption_flags[ch1]; \
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287 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
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288 __getopt_nonoption_flags[ch2] = __tmp; \
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289 }
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290 #else /* !_LIBC */
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291 # define SWAP_FLAGS(ch1, ch2)
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292 #endif /* _LIBC */
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293
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0
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294 /* Exchange two adjacent subsequences of ARGV.
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295 One subsequence is elements [first_nonopt,last_nonopt)
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296 which contains all the non-options that have been skipped so far.
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297 The other is elements [last_nonopt,optind), which contains all
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298 the options processed since those non-options were skipped.
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299
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300 `first_nonopt' and `last_nonopt' are relocated so that they describe
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301 the new indices of the non-options in ARGV after they are moved. */
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302
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303 #if defined (__STDC__) && __STDC__
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304 static void exchange (char **);
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305 #endif
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306
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307 static void
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308 exchange (char **argv)
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309 {
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310 int bottom = first_nonopt;
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311 int middle = last_nonopt;
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312 int top = optind;
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313 char *tem;
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314
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315 /* Exchange the shorter segment with the far end of the longer segment.
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316 That puts the shorter segment into the right place.
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317 It leaves the longer segment in the right place overall,
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318 but it consists of two parts that need to be swapped next. */
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319
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320 #ifdef _LIBC
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321 /* First make sure the handling of the `__getopt_nonoption_flags'
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322 string can work normally. Our top argument must be in the range
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323 of the string. */
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324 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
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325 {
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326 /* We must extend the array. The user plays games with us and
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327 presents new arguments. */
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328 char *new_str = malloc (top + 1);
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329 if (new_str == NULL)
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330 nonoption_flags_len = nonoption_flags_max_len = 0;
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331 else
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332 {
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333 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
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334 memset (&new_str[nonoption_flags_max_len], '\0',
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335 top + 1 - nonoption_flags_max_len);
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336 nonoption_flags_max_len = top + 1;
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337 __getopt_nonoption_flags = new_str;
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338 }
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339 }
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340 #endif
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341
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0
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342 while (top > middle && middle > bottom)
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343 {
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344 if (top - middle > middle - bottom)
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345 {
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346 /* Bottom segment is the short one. */
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347 int len = middle - bottom;
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348 register int i;
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349
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350 /* Swap it with the top part of the top segment. */
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351 for (i = 0; i < len; i++)
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352 {
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353 tem = argv[bottom + i];
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354 argv[bottom + i] = argv[top - (middle - bottom) + i];
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355 argv[top - (middle - bottom) + i] = tem;
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155
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356 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
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0
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357 }
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358 /* Exclude the moved bottom segment from further swapping. */
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359 top -= len;
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360 }
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361 else
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362 {
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363 /* Top segment is the short one. */
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364 int len = top - middle;
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365 register int i;
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366
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367 /* Swap it with the bottom part of the bottom segment. */
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368 for (i = 0; i < len; i++)
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369 {
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370 tem = argv[bottom + i];
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371 argv[bottom + i] = argv[middle + i];
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372 argv[middle + i] = tem;
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373 SWAP_FLAGS (bottom + i, middle + i);
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0
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374 }
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375 /* Exclude the moved top segment from further swapping. */
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376 bottom += len;
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377 }
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378 }
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379
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380 /* Update records for the slots the non-options now occupy. */
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381
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382 first_nonopt += (optind - last_nonopt);
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383 last_nonopt = optind;
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384 }
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385
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386 /* Initialize the internal data when the first call is made. */
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387
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155
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388 #if defined (__STDC__) && __STDC__
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389 static const char *_getopt_initialize (int, char *const *, const char *);
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390 #endif
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0
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391 static const char *
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155
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392 _getopt_initialize (int argc, char *const *argv, const char *optstring)
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0
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393 {
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394 /* Start processing options with ARGV-element 1 (since ARGV-element 0
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395 is the program name); the sequence of previously skipped
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396 non-option ARGV-elements is empty. */
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397
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155
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398 first_nonopt = last_nonopt = optind;
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0
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399
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400 nextchar = NULL;
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401
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|
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402 posixly_correct = getenv ("POSIXLY_CORRECT");
|
|
|
403
|
|
|
404 /* Determine how to handle the ordering of options and nonoptions. */
|
|
|
405
|
|
|
406 if (optstring[0] == '-')
|
|
|
407 {
|
|
|
408 ordering = RETURN_IN_ORDER;
|
|
|
409 ++optstring;
|
|
|
410 }
|
|
|
411 else if (optstring[0] == '+')
|
|
|
412 {
|
|
|
413 ordering = REQUIRE_ORDER;
|
|
|
414 ++optstring;
|
|
|
415 }
|
|
|
416 else if (posixly_correct != NULL)
|
|
|
417 ordering = REQUIRE_ORDER;
|
|
|
418 else
|
|
|
419 ordering = PERMUTE;
|
|
|
420
|
|
155
|
421 #ifdef _LIBC
|
|
|
422 if (posixly_correct == NULL
|
|
|
423 && argc == original_argc && argv == original_argv)
|
|
|
424 {
|
|
|
425 if (nonoption_flags_max_len == 0)
|
|
|
426 {
|
|
|
427 if (__getopt_nonoption_flags == NULL
|
|
|
428 || __getopt_nonoption_flags[0] == '\0')
|
|
|
429 nonoption_flags_max_len = -1;
|
|
|
430 else
|
|
|
431 {
|
|
|
432 const char *orig_str = __getopt_nonoption_flags;
|
|
|
433 int len = nonoption_flags_max_len = strlen (orig_str);
|
|
|
434 if (nonoption_flags_max_len < argc)
|
|
|
435 nonoption_flags_max_len = argc;
|
|
|
436 __getopt_nonoption_flags =
|
|
|
437 (char *) malloc (nonoption_flags_max_len);
|
|
|
438 if (__getopt_nonoption_flags == NULL)
|
|
|
439 nonoption_flags_max_len = -1;
|
|
|
440 else
|
|
|
441 {
|
|
|
442 memcpy (__getopt_nonoption_flags, orig_str, len);
|
|
|
443 memset (&__getopt_nonoption_flags[len], '\0',
|
|
|
444 nonoption_flags_max_len - len);
|
|
|
445 }
|
|
|
446 }
|
|
|
447 }
|
|
|
448 nonoption_flags_len = nonoption_flags_max_len;
|
|
|
449 }
|
|
|
450 else
|
|
|
451 nonoption_flags_len = 0;
|
|
|
452 #endif
|
|
|
453
|
|
0
|
454 return optstring;
|
|
|
455 }
|
|
|
456
|
|
|
457 /* Scan elements of ARGV (whose length is ARGC) for option characters
|
|
|
458 given in OPTSTRING.
|
|
|
459
|
|
|
460 If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
|
|
461 then it is an option element. The characters of this element
|
|
|
462 (aside from the initial '-') are option characters. If `getopt'
|
|
|
463 is called repeatedly, it returns successively each of the option characters
|
|
|
464 from each of the option elements.
|
|
|
465
|
|
|
466 If `getopt' finds another option character, it returns that character,
|
|
|
467 updating `optind' and `nextchar' so that the next call to `getopt' can
|
|
|
468 resume the scan with the following option character or ARGV-element.
|
|
|
469
|
|
155
|
470 If there are no more option characters, `getopt' returns -1.
|
|
0
|
471 Then `optind' is the index in ARGV of the first ARGV-element
|
|
|
472 that is not an option. (The ARGV-elements have been permuted
|
|
|
473 so that those that are not options now come last.)
|
|
|
474
|
|
|
475 OPTSTRING is a string containing the legitimate option characters.
|
|
|
476 If an option character is seen that is not listed in OPTSTRING,
|
|
|
477 return '?' after printing an error message. If you set `opterr' to
|
|
|
478 zero, the error message is suppressed but we still return '?'.
|
|
|
479
|
|
|
480 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
|
|
481 so the following text in the same ARGV-element, or the text of the following
|
|
|
482 ARGV-element, is returned in `optarg'. Two colons mean an option that
|
|
|
483 wants an optional arg; if there is text in the current ARGV-element,
|
|
|
484 it is returned in `optarg', otherwise `optarg' is set to zero.
|
|
|
485
|
|
|
486 If OPTSTRING starts with `-' or `+', it requests different methods of
|
|
|
487 handling the non-option ARGV-elements.
|
|
|
488 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
|
|
489
|
|
|
490 Long-named options begin with `--' instead of `-'.
|
|
|
491 Their names may be abbreviated as long as the abbreviation is unique
|
|
|
492 or is an exact match for some defined option. If they have an
|
|
|
493 argument, it follows the option name in the same ARGV-element, separated
|
|
|
494 from the option name by a `=', or else the in next ARGV-element.
|
|
|
495 When `getopt' finds a long-named option, it returns 0 if that option's
|
|
|
496 `flag' field is nonzero, the value of the option's `val' field
|
|
|
497 if the `flag' field is zero.
|
|
|
498
|
|
|
499 The elements of ARGV aren't really const, because we permute them.
|
|
|
500 But we pretend they're const in the prototype to be compatible
|
|
|
501 with other systems.
|
|
|
502
|
|
|
503 LONGOPTS is a vector of `struct option' terminated by an
|
|
|
504 element containing a name which is zero.
|
|
|
505
|
|
|
506 LONGIND returns the index in LONGOPT of the long-named option found.
|
|
|
507 It is only valid when a long-named option has been found by the most
|
|
|
508 recent call.
|
|
|
509
|
|
|
510 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
|
|
511 long-named options. */
|
|
|
512
|
|
|
513 int
|
|
155
|
514 _getopt_internal (int argc, char *const *argv, const char *optstring,
|
|
|
515 const struct option *longopts, int *longind, int long_only)
|
|
0
|
516 {
|
|
|
517 optarg = NULL;
|
|
|
518
|
|
155
|
519 if (optind == 0 || !__getopt_initialized)
|
|
0
|
520 {
|
|
155
|
521 if (optind == 0)
|
|
|
522 optind = 1; /* Don't scan ARGV[0], the program name. */
|
|
|
523 optstring = _getopt_initialize (argc, argv, optstring);
|
|
|
524 __getopt_initialized = 1;
|
|
0
|
525 }
|
|
|
526
|
|
155
|
527 /* Test whether ARGV[optind] points to a non-option argument.
|
|
|
528 Either it does not have option syntax, or there is an environment flag
|
|
|
529 from the shell indicating it is not an option. The later information
|
|
|
530 is only used when the used in the GNU libc. */
|
|
|
531 #ifdef _LIBC
|
|
|
532 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|
|
|
533 || (optind < nonoption_flags_len \
|
|
|
534 && __getopt_nonoption_flags[optind] == '1'))
|
|
|
535 #else
|
|
|
536 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
|
|
537 #endif
|
|
|
538
|
|
0
|
539 if (nextchar == NULL || *nextchar == '\0')
|
|
|
540 {
|
|
|
541 /* Advance to the next ARGV-element. */
|
|
|
542
|
|
155
|
543 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
|
|
544 moved back by the user (who may also have changed the arguments). */
|
|
|
545 if (last_nonopt > optind)
|
|
|
546 last_nonopt = optind;
|
|
|
547 if (first_nonopt > optind)
|
|
|
548 first_nonopt = optind;
|
|
|
549
|
|
0
|
550 if (ordering == PERMUTE)
|
|
|
551 {
|
|
|
552 /* If we have just processed some options following some non-options,
|
|
|
553 exchange them so that the options come first. */
|
|
|
554
|
|
|
555 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
556 exchange ((char **) argv);
|
|
|
557 else if (last_nonopt != optind)
|
|
|
558 first_nonopt = optind;
|
|
|
559
|
|
|
560 /* Skip any additional non-options
|
|
|
561 and extend the range of non-options previously skipped. */
|
|
|
562
|
|
155
|
563 while (optind < argc && NONOPTION_P)
|
|
0
|
564 optind++;
|
|
|
565 last_nonopt = optind;
|
|
|
566 }
|
|
|
567
|
|
|
568 /* The special ARGV-element `--' means premature end of options.
|
|
|
569 Skip it like a null option,
|
|
|
570 then exchange with previous non-options as if it were an option,
|
|
|
571 then skip everything else like a non-option. */
|
|
|
572
|
|
|
573 if (optind != argc && !strcmp (argv[optind], "--"))
|
|
|
574 {
|
|
|
575 optind++;
|
|
|
576
|
|
|
577 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
578 exchange ((char **) argv);
|
|
|
579 else if (first_nonopt == last_nonopt)
|
|
|
580 first_nonopt = optind;
|
|
|
581 last_nonopt = argc;
|
|
|
582
|
|
|
583 optind = argc;
|
|
|
584 }
|
|
|
585
|
|
|
586 /* If we have done all the ARGV-elements, stop the scan
|
|
|
587 and back over any non-options that we skipped and permuted. */
|
|
|
588
|
|
|
589 if (optind == argc)
|
|
|
590 {
|
|
|
591 /* Set the next-arg-index to point at the non-options
|
|
|
592 that we previously skipped, so the caller will digest them. */
|
|
|
593 if (first_nonopt != last_nonopt)
|
|
|
594 optind = first_nonopt;
|
|
155
|
595 return -1;
|
|
0
|
596 }
|
|
|
597
|
|
|
598 /* If we have come to a non-option and did not permute it,
|
|
|
599 either stop the scan or describe it to the caller and pass it by. */
|
|
|
600
|
|
155
|
601 if (NONOPTION_P)
|
|
0
|
602 {
|
|
|
603 if (ordering == REQUIRE_ORDER)
|
|
155
|
604 return -1;
|
|
0
|
605 optarg = argv[optind++];
|
|
|
606 return 1;
|
|
|
607 }
|
|
|
608
|
|
|
609 /* We have found another option-ARGV-element.
|
|
|
610 Skip the initial punctuation. */
|
|
|
611
|
|
|
612 nextchar = (argv[optind] + 1
|
|
|
613 + (longopts != NULL && argv[optind][1] == '-'));
|
|
|
614 }
|
|
|
615
|
|
|
616 /* Decode the current option-ARGV-element. */
|
|
|
617
|
|
|
618 /* Check whether the ARGV-element is a long option.
|
|
|
619
|
|
|
620 If long_only and the ARGV-element has the form "-f", where f is
|
|
|
621 a valid short option, don't consider it an abbreviated form of
|
|
|
622 a long option that starts with f. Otherwise there would be no
|
|
|
623 way to give the -f short option.
|
|
|
624
|
|
|
625 On the other hand, if there's a long option "fubar" and
|
|
|
626 the ARGV-element is "-fu", do consider that an abbreviation of
|
|
|
627 the long option, just like "--fu", and not "-f" with arg "u".
|
|
|
628
|
|
|
629 This distinction seems to be the most useful approach. */
|
|
|
630
|
|
|
631 if (longopts != NULL
|
|
|
632 && (argv[optind][1] == '-'
|
|
|
633 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
|
|
|
634 {
|
|
|
635 char *nameend;
|
|
|
636 const struct option *p;
|
|
|
637 const struct option *pfound = NULL;
|
|
|
638 int exact = 0;
|
|
|
639 int ambig = 0;
|
|
155
|
640 int indfound = -1;
|
|
0
|
641 int option_index;
|
|
|
642
|
|
|
643 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
|
|
|
644 /* Do nothing. */ ;
|
|
|
645
|
|
|
646 /* Test all long options for either exact match
|
|
|
647 or abbreviated matches. */
|
|
|
648 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
649 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
650 {
|
|
155
|
651 if ((unsigned int) (nameend - nextchar)
|
|
|
652 == (unsigned int) strlen (p->name))
|
|
0
|
653 {
|
|
|
654 /* Exact match found. */
|
|
|
655 pfound = p;
|
|
|
656 indfound = option_index;
|
|
|
657 exact = 1;
|
|
|
658 break;
|
|
|
659 }
|
|
|
660 else if (pfound == NULL)
|
|
|
661 {
|
|
|
662 /* First nonexact match found. */
|
|
|
663 pfound = p;
|
|
|
664 indfound = option_index;
|
|
|
665 }
|
|
|
666 else
|
|
|
667 /* Second or later nonexact match found. */
|
|
|
668 ambig = 1;
|
|
|
669 }
|
|
|
670
|
|
|
671 if (ambig && !exact)
|
|
|
672 {
|
|
|
673 if (opterr)
|
|
155
|
674 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
|
0
|
675 argv[0], argv[optind]);
|
|
|
676 nextchar += strlen (nextchar);
|
|
|
677 optind++;
|
|
155
|
678 optopt = 0;
|
|
0
|
679 return '?';
|
|
|
680 }
|
|
|
681
|
|
|
682 if (pfound != NULL)
|
|
|
683 {
|
|
|
684 option_index = indfound;
|
|
|
685 optind++;
|
|
|
686 if (*nameend)
|
|
|
687 {
|
|
|
688 /* Don't test has_arg with >, because some C compilers don't
|
|
|
689 allow it to be used on enums. */
|
|
|
690 if (pfound->has_arg)
|
|
|
691 optarg = nameend + 1;
|
|
|
692 else
|
|
|
693 {
|
|
|
694 if (opterr)
|
|
|
695 if (argv[optind - 1][1] == '-')
|
|
|
696 /* --option */
|
|
|
697 fprintf (stderr,
|
|
155
|
698 _("%s: option `--%s' doesn't allow an argument\n"),
|
|
0
|
699 argv[0], pfound->name);
|
|
|
700 else
|
|
|
701 /* +option or -option */
|
|
|
702 fprintf (stderr,
|
|
155
|
703 _("%s: option `%c%s' doesn't allow an argument\n"),
|
|
0
|
704 argv[0], argv[optind - 1][0], pfound->name);
|
|
|
705
|
|
|
706 nextchar += strlen (nextchar);
|
|
155
|
707
|
|
|
708 optopt = pfound->val;
|
|
0
|
709 return '?';
|
|
|
710 }
|
|
|
711 }
|
|
|
712 else if (pfound->has_arg == 1)
|
|
|
713 {
|
|
|
714 if (optind < argc)
|
|
|
715 optarg = argv[optind++];
|
|
|
716 else
|
|
|
717 {
|
|
|
718 if (opterr)
|
|
|
719 fprintf (stderr,
|
|
155
|
720 _("%s: option `%s' requires an argument\n"),
|
|
0
|
721 argv[0], argv[optind - 1]);
|
|
|
722 nextchar += strlen (nextchar);
|
|
155
|
723 optopt = pfound->val;
|
|
0
|
724 return optstring[0] == ':' ? ':' : '?';
|
|
|
725 }
|
|
|
726 }
|
|
|
727 nextchar += strlen (nextchar);
|
|
|
728 if (longind != NULL)
|
|
|
729 *longind = option_index;
|
|
|
730 if (pfound->flag)
|
|
|
731 {
|
|
|
732 *(pfound->flag) = pfound->val;
|
|
|
733 return 0;
|
|
|
734 }
|
|
|
735 return pfound->val;
|
|
|
736 }
|
|
|
737
|
|
|
738 /* Can't find it as a long option. If this is not getopt_long_only,
|
|
|
739 or the option starts with '--' or is not a valid short
|
|
|
740 option, then it's an error.
|
|
|
741 Otherwise interpret it as a short option. */
|
|
|
742 if (!long_only || argv[optind][1] == '-'
|
|
|
743 || my_index (optstring, *nextchar) == NULL)
|
|
|
744 {
|
|
|
745 if (opterr)
|
|
|
746 {
|
|
|
747 if (argv[optind][1] == '-')
|
|
|
748 /* --option */
|
|
155
|
749 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
|
0
|
750 argv[0], nextchar);
|
|
|
751 else
|
|
|
752 /* +option or -option */
|
|
155
|
753 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
|
0
|
754 argv[0], argv[optind][0], nextchar);
|
|
|
755 }
|
|
|
756 nextchar = (char *) "";
|
|
|
757 optind++;
|
|
155
|
758 optopt = 0;
|
|
0
|
759 return '?';
|
|
|
760 }
|
|
|
761 }
|
|
|
762
|
|
|
763 /* Look at and handle the next short option-character. */
|
|
|
764
|
|
|
765 {
|
|
|
766 char c = *nextchar++;
|
|
|
767 char *temp = my_index (optstring, c);
|
|
|
768
|
|
|
769 /* Increment `optind' when we start to process its last character. */
|
|
|
770 if (*nextchar == '\0')
|
|
|
771 ++optind;
|
|
|
772
|
|
|
773 if (temp == NULL || c == ':')
|
|
|
774 {
|
|
|
775 if (opterr)
|
|
|
776 {
|
|
|
777 if (posixly_correct)
|
|
|
778 /* 1003.2 specifies the format of this message. */
|
|
155
|
779 fprintf (stderr, _("%s: illegal option -- %c\n"),
|
|
0
|
780 argv[0], c);
|
|
|
781 else
|
|
155
|
782 fprintf (stderr, _("%s: invalid option -- %c\n"),
|
|
0
|
783 argv[0], c);
|
|
|
784 }
|
|
|
785 optopt = c;
|
|
|
786 return '?';
|
|
|
787 }
|
|
155
|
788 /* Convenience. Treat POSIX -W foo same as long option --foo */
|
|
|
789 if (temp[0] == 'W' && temp[1] == ';')
|
|
|
790 {
|
|
|
791 char *nameend;
|
|
|
792 const struct option *p;
|
|
|
793 const struct option *pfound = NULL;
|
|
|
794 int exact = 0;
|
|
|
795 int ambig = 0;
|
|
|
796 int indfound = 0;
|
|
|
797 int option_index;
|
|
|
798
|
|
|
799 /* This is an option that requires an argument. */
|
|
|
800 if (*nextchar != '\0')
|
|
|
801 {
|
|
|
802 optarg = nextchar;
|
|
|
803 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
804 we must advance to the next element now. */
|
|
|
805 optind++;
|
|
|
806 }
|
|
|
807 else if (optind == argc)
|
|
|
808 {
|
|
|
809 if (opterr)
|
|
|
810 {
|
|
|
811 /* 1003.2 specifies the format of this message. */
|
|
|
812 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
|
|
813 argv[0], c);
|
|
|
814 }
|
|
|
815 optopt = c;
|
|
|
816 if (optstring[0] == ':')
|
|
|
817 c = ':';
|
|
|
818 else
|
|
|
819 c = '?';
|
|
|
820 return c;
|
|
|
821 }
|
|
|
822 else
|
|
|
823 /* We already incremented `optind' once;
|
|
|
824 increment it again when taking next ARGV-elt as argument. */
|
|
|
825 optarg = argv[optind++];
|
|
|
826
|
|
|
827 /* optarg is now the argument, see if it's in the
|
|
|
828 table of longopts. */
|
|
|
829
|
|
|
830 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
|
|
|
831 /* Do nothing. */ ;
|
|
|
832
|
|
|
833 /* Test all long options for either exact match
|
|
|
834 or abbreviated matches. */
|
|
|
835 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
836 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
837 {
|
|
|
838 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
|
|
|
839 {
|
|
|
840 /* Exact match found. */
|
|
|
841 pfound = p;
|
|
|
842 indfound = option_index;
|
|
|
843 exact = 1;
|
|
|
844 break;
|
|
|
845 }
|
|
|
846 else if (pfound == NULL)
|
|
|
847 {
|
|
|
848 /* First nonexact match found. */
|
|
|
849 pfound = p;
|
|
|
850 indfound = option_index;
|
|
|
851 }
|
|
|
852 else
|
|
|
853 /* Second or later nonexact match found. */
|
|
|
854 ambig = 1;
|
|
|
855 }
|
|
|
856 if (ambig && !exact)
|
|
|
857 {
|
|
|
858 if (opterr)
|
|
|
859 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
|
|
860 argv[0], argv[optind]);
|
|
|
861 nextchar += strlen (nextchar);
|
|
|
862 optind++;
|
|
|
863 return '?';
|
|
|
864 }
|
|
|
865 if (pfound != NULL)
|
|
|
866 {
|
|
|
867 option_index = indfound;
|
|
|
868 if (*nameend)
|
|
|
869 {
|
|
|
870 /* Don't test has_arg with >, because some C compilers don't
|
|
|
871 allow it to be used on enums. */
|
|
|
872 if (pfound->has_arg)
|
|
|
873 optarg = nameend + 1;
|
|
|
874 else
|
|
|
875 {
|
|
|
876 if (opterr)
|
|
|
877 fprintf (stderr, _("\
|
|
|
878 %s: option `-W %s' doesn't allow an argument\n"),
|
|
|
879 argv[0], pfound->name);
|
|
|
880
|
|
|
881 nextchar += strlen (nextchar);
|
|
|
882 return '?';
|
|
|
883 }
|
|
|
884 }
|
|
|
885 else if (pfound->has_arg == 1)
|
|
|
886 {
|
|
|
887 if (optind < argc)
|
|
|
888 optarg = argv[optind++];
|
|
|
889 else
|
|
|
890 {
|
|
|
891 if (opterr)
|
|
|
892 fprintf (stderr,
|
|
|
893 _("%s: option `%s' requires an argument\n"),
|
|
|
894 argv[0], argv[optind - 1]);
|
|
|
895 nextchar += strlen (nextchar);
|
|
|
896 return optstring[0] == ':' ? ':' : '?';
|
|
|
897 }
|
|
|
898 }
|
|
|
899 nextchar += strlen (nextchar);
|
|
|
900 if (longind != NULL)
|
|
|
901 *longind = option_index;
|
|
|
902 if (pfound->flag)
|
|
|
903 {
|
|
|
904 *(pfound->flag) = pfound->val;
|
|
|
905 return 0;
|
|
|
906 }
|
|
|
907 return pfound->val;
|
|
|
908 }
|
|
|
909 nextchar = NULL;
|
|
|
910 return 'W'; /* Let the application handle it. */
|
|
|
911 }
|
|
0
|
912 if (temp[1] == ':')
|
|
|
913 {
|
|
|
914 if (temp[2] == ':')
|
|
|
915 {
|
|
|
916 /* This is an option that accepts an argument optionally. */
|
|
|
917 if (*nextchar != '\0')
|
|
|
918 {
|
|
|
919 optarg = nextchar;
|
|
|
920 optind++;
|
|
|
921 }
|
|
|
922 else
|
|
|
923 optarg = NULL;
|
|
|
924 nextchar = NULL;
|
|
|
925 }
|
|
|
926 else
|
|
|
927 {
|
|
|
928 /* This is an option that requires an argument. */
|
|
|
929 if (*nextchar != '\0')
|
|
|
930 {
|
|
|
931 optarg = nextchar;
|
|
|
932 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
933 we must advance to the next element now. */
|
|
|
934 optind++;
|
|
|
935 }
|
|
|
936 else if (optind == argc)
|
|
|
937 {
|
|
|
938 if (opterr)
|
|
|
939 {
|
|
|
940 /* 1003.2 specifies the format of this message. */
|
|
|
941 fprintf (stderr,
|
|
155
|
942 _("%s: option requires an argument -- %c\n"),
|
|
0
|
943 argv[0], c);
|
|
|
944 }
|
|
|
945 optopt = c;
|
|
|
946 if (optstring[0] == ':')
|
|
|
947 c = ':';
|
|
|
948 else
|
|
|
949 c = '?';
|
|
|
950 }
|
|
|
951 else
|
|
|
952 /* We already incremented `optind' once;
|
|
|
953 increment it again when taking next ARGV-elt as argument. */
|
|
|
954 optarg = argv[optind++];
|
|
|
955 nextchar = NULL;
|
|
|
956 }
|
|
|
957 }
|
|
|
958 return c;
|
|
|
959 }
|
|
|
960 }
|
|
|
961
|
|
|
962 int
|
|
155
|
963 getopt (int argc, char *const *argv, const char *optstring)
|
|
0
|
964 {
|
|
|
965 return _getopt_internal (argc, argv, optstring,
|
|
|
966 (const struct option *) 0,
|
|
|
967 (int *) 0,
|
|
|
968 0);
|
|
|
969 }
|
|
|
970
|
|
155
|
971 #endif /* Not ELIDE_CODE. */
|
|
0
|
972
|
|
|
973 #ifdef TEST
|
|
|
974
|
|
|
975 /* Compile with -DTEST to make an executable for use in testing
|
|
|
976 the above definition of `getopt'. */
|
|
|
977
|
|
|
978 int
|
|
155
|
979 main (int argc, char **argv)
|
|
0
|
980 {
|
|
|
981 int c;
|
|
|
982 int digit_optind = 0;
|
|
|
983
|
|
|
984 while (1)
|
|
|
985 {
|
|
|
986 int this_option_optind = optind ? optind : 1;
|
|
|
987
|
|
|
988 c = getopt (argc, argv, "abc:d:0123456789");
|
|
155
|
989 if (c == -1)
|
|
0
|
990 break;
|
|
|
991
|
|
|
992 switch (c)
|
|
|
993 {
|
|
|
994 case '0':
|
|
|
995 case '1':
|
|
|
996 case '2':
|
|
|
997 case '3':
|
|
|
998 case '4':
|
|
|
999 case '5':
|
|
|
1000 case '6':
|
|
|
1001 case '7':
|
|
|
1002 case '8':
|
|
|
1003 case '9':
|
|
|
1004 if (digit_optind != 0 && digit_optind != this_option_optind)
|
|
|
1005 printf ("digits occur in two different argv-elements.\n");
|
|
|
1006 digit_optind = this_option_optind;
|
|
|
1007 printf ("option %c\n", c);
|
|
|
1008 break;
|
|
|
1009
|
|
|
1010 case 'a':
|
|
|
1011 printf ("option a\n");
|
|
|
1012 break;
|
|
|
1013
|
|
|
1014 case 'b':
|
|
|
1015 printf ("option b\n");
|
|
|
1016 break;
|
|
|
1017
|
|
|
1018 case 'c':
|
|
|
1019 printf ("option c with value `%s'\n", optarg);
|
|
|
1020 break;
|
|
|
1021
|
|
|
1022 case '?':
|
|
|
1023 break;
|
|
|
1024
|
|
|
1025 default:
|
|
|
1026 printf ("?? getopt returned character code 0%o ??\n", c);
|
|
|
1027 }
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (optind < argc)
|
|
|
1031 {
|
|
|
1032 printf ("non-option ARGV-elements: ");
|
|
|
1033 while (optind < argc)
|
|
|
1034 printf ("%s ", argv[optind++]);
|
|
|
1035 printf ("\n");
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 exit (0);
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 #endif /* TEST */
|
