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0
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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 drepper@gnu.org
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4 before changing it!
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5
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6 Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
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7 1996, 1997, 1998, 2005 Free Software Foundation, Inc.
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8
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9 NOTE: This source is derived from an old version taken from the GNU C
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10 Library (glibc).
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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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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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 "ansidecl.h"
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46 #include <stdio.h>
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47
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48 /* Comment out all this code if we are using the GNU C Library, and are not
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49 actually compiling the library itself. This code is part of the GNU C
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50 Library, but also included in many other GNU distributions. Compiling
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51 and linking in this code is a waste when using the GNU C library
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52 (especially if it is a shared library). Rather than having every GNU
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53 program understand `configure --with-gnu-libc' and omit the object files,
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54 it is simpler to just do this in the source for each such file. */
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55
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56 #define GETOPT_INTERFACE_VERSION 2
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57 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
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58 # include <gnu-versions.h>
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59 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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60 # define ELIDE_CODE
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61 # endif
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62 #endif
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63
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64 #ifndef ELIDE_CODE
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65
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66
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67 /* This needs to come after some library #include
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68 to get __GNU_LIBRARY__ defined. */
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69 #ifdef __GNU_LIBRARY__
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70 /* Don't include stdlib.h for non-GNU C libraries because some of them
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71 contain conflicting prototypes for getopt. */
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72 # include <stdlib.h>
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73 # include <unistd.h>
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74 #endif /* GNU C library. */
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75
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76 #ifdef VMS
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77 # include <unixlib.h>
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78 # if HAVE_STRING_H - 0
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79 # include <string.h>
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80 # endif
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81 #endif
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82
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83 #ifndef _
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84 /* This is for other GNU distributions with internationalized messages.
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85 When compiling libc, the _ macro is predefined. */
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86 # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC
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87 # include <libintl.h>
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88 # define _(msgid) gettext (msgid)
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89 # else
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90 # define _(msgid) (msgid)
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91 # endif
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92 #endif
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93
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94 /* This version of `getopt' appears to the caller like standard Unix `getopt'
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95 but it behaves differently for the user, since it allows the user
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96 to intersperse the options with the other arguments.
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97
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98 As `getopt' works, it permutes the elements of ARGV so that,
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99 when it is done, all the options precede everything else. Thus
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100 all application programs are extended to handle flexible argument order.
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101
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102 Setting the environment variable POSIXLY_CORRECT disables permutation.
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103 Then the behavior is completely standard.
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104
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105 GNU application programs can use a third alternative mode in which
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106 they can distinguish the relative order of options and other arguments. */
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107
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108 #include "getopt.h"
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109
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110 /* For communication from `getopt' to the caller.
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111 When `getopt' finds an option that takes an argument,
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112 the argument value is returned here.
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113 Also, when `ordering' is RETURN_IN_ORDER,
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114 each non-option ARGV-element is returned here. */
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115
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116 char *optarg = NULL;
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117
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118 /* Index in ARGV of the next element to be scanned.
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119 This is used for communication to and from the caller
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120 and for communication between successive calls to `getopt'.
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121
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122 On entry to `getopt', zero means this is the first call; initialize.
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123
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124 When `getopt' returns -1, this is the index of the first of the
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125 non-option elements that the caller should itself scan.
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126
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127 Otherwise, `optind' communicates from one call to the next
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128 how much of ARGV has been scanned so far. */
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129
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130 /* 1003.2 says this must be 1 before any call. */
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131 int optind = 1;
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132
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133 /* Formerly, initialization of getopt depended on optind==0, which
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134 causes problems with re-calling getopt as programs generally don't
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135 know that. */
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136
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137 int __getopt_initialized = 0;
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138
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139 /* The next char to be scanned in the option-element
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140 in which the last option character we returned was found.
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141 This allows us to pick up the scan where we left off.
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142
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143 If this is zero, or a null string, it means resume the scan
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144 by advancing to the next ARGV-element. */
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145
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146 static char *nextchar;
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147
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148 /* Callers store zero here to inhibit the error message
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149 for unrecognized options. */
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150
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151 int opterr = 1;
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152
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153 /* Set to an option character which was unrecognized.
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154 This must be initialized on some systems to avoid linking in the
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155 system's own getopt implementation. */
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156
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157 int optopt = '?';
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158
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159 /* Describe how to deal with options that follow non-option ARGV-elements.
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160
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161 If the caller did not specify anything,
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162 the default is REQUIRE_ORDER if the environment variable
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163 POSIXLY_CORRECT is defined, PERMUTE otherwise.
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164
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165 REQUIRE_ORDER means don't recognize them as options;
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166 stop option processing when the first non-option is seen.
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167 This is what Unix does.
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168 This mode of operation is selected by either setting the environment
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169 variable POSIXLY_CORRECT, or using `+' as the first character
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170 of the list of option characters.
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171
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172 PERMUTE is the default. We permute the contents of ARGV as we scan,
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173 so that eventually all the non-options are at the end. This allows options
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174 to be given in any order, even with programs that were not written to
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175 expect this.
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176
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177 RETURN_IN_ORDER is an option available to programs that were written
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178 to expect options and other ARGV-elements in any order and that care about
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179 the ordering of the two. We describe each non-option ARGV-element
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180 as if it were the argument of an option with character code 1.
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181 Using `-' as the first character of the list of option characters
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182 selects this mode of operation.
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183
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184 The special argument `--' forces an end of option-scanning regardless
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185 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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186 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
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187
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188 static enum
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189 {
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190 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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191 } ordering;
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192
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193 /* Value of POSIXLY_CORRECT environment variable. */
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194 static char *posixly_correct;
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195
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196 #ifdef __GNU_LIBRARY__
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197 /* We want to avoid inclusion of string.h with non-GNU libraries
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198 because there are many ways it can cause trouble.
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199 On some systems, it contains special magic macros that don't work
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200 in GCC. */
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201 # include <string.h>
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202 # define my_index strchr
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203 #else
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204
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205 # if HAVE_STRING_H
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206 # include <string.h>
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207 # else
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208 # if HAVE_STRINGS_H
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209 # include <strings.h>
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210 # endif
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211 # endif
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212
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213 /* Avoid depending on library functions or files
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214 whose names are inconsistent. */
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215
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216 #if HAVE_STDLIB_H && HAVE_DECL_GETENV
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217 # include <stdlib.h>
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218 #elif !defined(getenv)
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219 # ifdef __cplusplus
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220 extern "C" {
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221 # endif /* __cplusplus */
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222 extern char *getenv (const char *);
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223 # ifdef __cplusplus
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224 }
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225 # endif /* __cplusplus */
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226 #endif
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227
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228 static char *
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229 my_index (const char *str, int chr)
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230 {
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231 while (*str)
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232 {
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233 if (*str == chr)
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234 return (char *) str;
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235 str++;
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236 }
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237 return 0;
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238 }
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239
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240 /* If using GCC, we can safely declare strlen this way.
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241 If not using GCC, it is ok not to declare it. */
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242 #ifdef __GNUC__
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243 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
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244 That was relevant to code that was here before. */
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245 # if (!defined __STDC__ || !__STDC__) && !defined strlen
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246 /* gcc with -traditional declares the built-in strlen to return int,
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247 and has done so at least since version 2.4.5. -- rms. */
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248 extern int strlen (const char *);
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249 # endif /* not __STDC__ */
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250 #endif /* __GNUC__ */
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251
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252 #endif /* not __GNU_LIBRARY__ */
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253
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254 /* Handle permutation of arguments. */
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255
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256 /* Describe the part of ARGV that contains non-options that have
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257 been skipped. `first_nonopt' is the index in ARGV of the first of them;
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258 `last_nonopt' is the index after the last of them. */
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259
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260 static int first_nonopt;
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261 static int last_nonopt;
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262
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263 #ifdef _LIBC
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264 /* Bash 2.0 gives us an environment variable containing flags
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265 indicating ARGV elements that should not be considered arguments. */
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266
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267 /* Defined in getopt_init.c */
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268 extern char *__getopt_nonoption_flags;
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269
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270 static int nonoption_flags_max_len;
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271 static int nonoption_flags_len;
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272
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273 static int original_argc;
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274 static char *const *original_argv;
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275
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276 /* Make sure the environment variable bash 2.0 puts in the environment
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277 is valid for the getopt call we must make sure that the ARGV passed
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278 to getopt is that one passed to the process. */
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279 static void
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280 __attribute__ ((unused))
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281 store_args_and_env (int argc, char *const *argv)
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282 {
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283 /* XXX This is no good solution. We should rather copy the args so
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284 that we can compare them later. But we must not use malloc(3). */
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285 original_argc = argc;
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286 original_argv = argv;
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287 }
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288 # ifdef text_set_element
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289 text_set_element (__libc_subinit, store_args_and_env);
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290 # endif /* text_set_element */
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291
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292 # define SWAP_FLAGS(ch1, ch2) \
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293 if (nonoption_flags_len > 0) \
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294 { \
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295 char __tmp = __getopt_nonoption_flags[ch1]; \
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296 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
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297 __getopt_nonoption_flags[ch2] = __tmp; \
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298 }
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299 #else /* !_LIBC */
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300 # define SWAP_FLAGS(ch1, ch2)
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301 #endif /* _LIBC */
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302
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303 /* Exchange two adjacent subsequences of ARGV.
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304 One subsequence is elements [first_nonopt,last_nonopt)
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305 which contains all the non-options that have been skipped so far.
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306 The other is elements [last_nonopt,optind), which contains all
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307 the options processed since those non-options were skipped.
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308
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309 `first_nonopt' and `last_nonopt' are relocated so that they describe
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310 the new indices of the non-options in ARGV after they are moved. */
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311
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312 #if defined __STDC__ && __STDC__
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313 static void exchange (char **);
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314 #endif
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315
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316 static void
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317 exchange (char **argv)
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318 {
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319 int bottom = first_nonopt;
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320 int middle = last_nonopt;
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321 int top = optind;
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322 char *tem;
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323
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324 /* Exchange the shorter segment with the far end of the longer segment.
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325 That puts the shorter segment into the right place.
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326 It leaves the longer segment in the right place overall,
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327 but it consists of two parts that need to be swapped next. */
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328
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329 #ifdef _LIBC
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330 /* First make sure the handling of the `__getopt_nonoption_flags'
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331 string can work normally. Our top argument must be in the range
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332 of the string. */
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333 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
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334 {
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335 /* We must extend the array. The user plays games with us and
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336 presents new arguments. */
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337 char *new_str = (char *) malloc (top + 1);
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338 if (new_str == NULL)
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339 nonoption_flags_len = nonoption_flags_max_len = 0;
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340 else
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341 {
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342 memset (mempcpy (new_str, __getopt_nonoption_flags,
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343 nonoption_flags_max_len),
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344 '\0', top + 1 - nonoption_flags_max_len);
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345 nonoption_flags_max_len = top + 1;
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346 __getopt_nonoption_flags = new_str;
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347 }
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348 }
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349 #endif
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350
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351 while (top > middle && middle > bottom)
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352 {
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353 if (top - middle > middle - bottom)
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354 {
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355 /* Bottom segment is the short one. */
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356 int len = middle - bottom;
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357 register int i;
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358
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359 /* Swap it with the top part of the top segment. */
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360 for (i = 0; i < len; i++)
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361 {
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362 tem = argv[bottom + i];
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363 argv[bottom + i] = argv[top - (middle - bottom) + i];
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364 argv[top - (middle - bottom) + i] = tem;
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365 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
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366 }
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367 /* Exclude the moved bottom segment from further swapping. */
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368 top -= len;
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369 }
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370 else
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371 {
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372 /* Top segment is the short one. */
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373 int len = top - middle;
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374 register int i;
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375
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376 /* Swap it with the bottom part of the bottom segment. */
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377 for (i = 0; i < len; i++)
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378 {
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379 tem = argv[bottom + i];
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380 argv[bottom + i] = argv[middle + i];
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381 argv[middle + i] = tem;
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382 SWAP_FLAGS (bottom + i, middle + i);
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383 }
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384 /* Exclude the moved top segment from further swapping. */
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385 bottom += len;
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386 }
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387 }
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388
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389 /* Update records for the slots the non-options now occupy. */
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390
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391 first_nonopt += (optind - last_nonopt);
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392 last_nonopt = optind;
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393 }
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394
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395 /* Initialize the internal data when the first call is made. */
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396
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397 #if defined __STDC__ && __STDC__
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398 static const char *_getopt_initialize (int, char *const *, const char *);
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399 #endif
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400 static const char *
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401 _getopt_initialize (int argc ATTRIBUTE_UNUSED,
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402 char *const *argv ATTRIBUTE_UNUSED,
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403 const char *optstring)
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404 {
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405 /* Start processing options with ARGV-element 1 (since ARGV-element 0
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406 is the program name); the sequence of previously skipped
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407 non-option ARGV-elements is empty. */
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408
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409 first_nonopt = last_nonopt = optind;
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410
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411 nextchar = NULL;
|
|
|
412
|
|
|
413 posixly_correct = getenv ("POSIXLY_CORRECT");
|
|
|
414
|
|
|
415 /* Determine how to handle the ordering of options and nonoptions. */
|
|
|
416
|
|
|
417 if (optstring[0] == '-')
|
|
|
418 {
|
|
|
419 ordering = RETURN_IN_ORDER;
|
|
|
420 ++optstring;
|
|
|
421 }
|
|
|
422 else if (optstring[0] == '+')
|
|
|
423 {
|
|
|
424 ordering = REQUIRE_ORDER;
|
|
|
425 ++optstring;
|
|
|
426 }
|
|
|
427 else if (posixly_correct != NULL)
|
|
|
428 ordering = REQUIRE_ORDER;
|
|
|
429 else
|
|
|
430 ordering = PERMUTE;
|
|
|
431
|
|
|
432 #ifdef _LIBC
|
|
|
433 if (posixly_correct == NULL
|
|
|
434 && argc == original_argc && argv == original_argv)
|
|
|
435 {
|
|
|
436 if (nonoption_flags_max_len == 0)
|
|
|
437 {
|
|
|
438 if (__getopt_nonoption_flags == NULL
|
|
|
439 || __getopt_nonoption_flags[0] == '\0')
|
|
|
440 nonoption_flags_max_len = -1;
|
|
|
441 else
|
|
|
442 {
|
|
|
443 const char *orig_str = __getopt_nonoption_flags;
|
|
|
444 int len = nonoption_flags_max_len = strlen (orig_str);
|
|
|
445 if (nonoption_flags_max_len < argc)
|
|
|
446 nonoption_flags_max_len = argc;
|
|
|
447 __getopt_nonoption_flags =
|
|
|
448 (char *) malloc (nonoption_flags_max_len);
|
|
|
449 if (__getopt_nonoption_flags == NULL)
|
|
|
450 nonoption_flags_max_len = -1;
|
|
|
451 else
|
|
|
452 memset (mempcpy (__getopt_nonoption_flags, orig_str, len),
|
|
|
453 '\0', nonoption_flags_max_len - len);
|
|
|
454 }
|
|
|
455 }
|
|
|
456 nonoption_flags_len = nonoption_flags_max_len;
|
|
|
457 }
|
|
|
458 else
|
|
|
459 nonoption_flags_len = 0;
|
|
|
460 #endif
|
|
|
461
|
|
|
462 return optstring;
|
|
|
463 }
|
|
|
464
|
|
|
465 /* Scan elements of ARGV (whose length is ARGC) for option characters
|
|
|
466 given in OPTSTRING.
|
|
|
467
|
|
|
468 If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
|
|
469 then it is an option element. The characters of this element
|
|
|
470 (aside from the initial '-') are option characters. If `getopt'
|
|
|
471 is called repeatedly, it returns successively each of the option characters
|
|
|
472 from each of the option elements.
|
|
|
473
|
|
|
474 If `getopt' finds another option character, it returns that character,
|
|
|
475 updating `optind' and `nextchar' so that the next call to `getopt' can
|
|
|
476 resume the scan with the following option character or ARGV-element.
|
|
|
477
|
|
|
478 If there are no more option characters, `getopt' returns -1.
|
|
|
479 Then `optind' is the index in ARGV of the first ARGV-element
|
|
|
480 that is not an option. (The ARGV-elements have been permuted
|
|
|
481 so that those that are not options now come last.)
|
|
|
482
|
|
|
483 OPTSTRING is a string containing the legitimate option characters.
|
|
|
484 If an option character is seen that is not listed in OPTSTRING,
|
|
|
485 return '?' after printing an error message. If you set `opterr' to
|
|
|
486 zero, the error message is suppressed but we still return '?'.
|
|
|
487
|
|
|
488 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
|
|
489 so the following text in the same ARGV-element, or the text of the following
|
|
|
490 ARGV-element, is returned in `optarg'. Two colons mean an option that
|
|
|
491 wants an optional arg; if there is text in the current ARGV-element,
|
|
|
492 it is returned in `optarg', otherwise `optarg' is set to zero.
|
|
|
493
|
|
|
494 If OPTSTRING starts with `-' or `+', it requests different methods of
|
|
|
495 handling the non-option ARGV-elements.
|
|
|
496 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
|
|
497
|
|
|
498 Long-named options begin with `--' instead of `-'.
|
|
|
499 Their names may be abbreviated as long as the abbreviation is unique
|
|
|
500 or is an exact match for some defined option. If they have an
|
|
|
501 argument, it follows the option name in the same ARGV-element, separated
|
|
|
502 from the option name by a `=', or else the in next ARGV-element.
|
|
|
503 When `getopt' finds a long-named option, it returns 0 if that option's
|
|
|
504 `flag' field is nonzero, the value of the option's `val' field
|
|
|
505 if the `flag' field is zero.
|
|
|
506
|
|
|
507 The elements of ARGV aren't really const, because we permute them.
|
|
|
508 But we pretend they're const in the prototype to be compatible
|
|
|
509 with other systems.
|
|
|
510
|
|
|
511 LONGOPTS is a vector of `struct option' terminated by an
|
|
|
512 element containing a name which is zero.
|
|
|
513
|
|
|
514 LONGIND returns the index in LONGOPT of the long-named option found.
|
|
|
515 It is only valid when a long-named option has been found by the most
|
|
|
516 recent call.
|
|
|
517
|
|
|
518 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
|
|
519 long-named options. */
|
|
|
520
|
|
|
521 int
|
|
|
522 _getopt_internal (int argc, char *const *argv, const char *optstring,
|
|
|
523 const struct option *longopts,
|
|
|
524 int *longind, int long_only)
|
|
|
525 {
|
|
|
526 optarg = NULL;
|
|
|
527
|
|
|
528 if (optind == 0 || !__getopt_initialized)
|
|
|
529 {
|
|
|
530 if (optind == 0)
|
|
|
531 optind = 1; /* Don't scan ARGV[0], the program name. */
|
|
|
532 optstring = _getopt_initialize (argc, argv, optstring);
|
|
|
533 __getopt_initialized = 1;
|
|
|
534 }
|
|
|
535
|
|
|
536 /* Test whether ARGV[optind] points to a non-option argument.
|
|
|
537 Either it does not have option syntax, or there is an environment flag
|
|
|
538 from the shell indicating it is not an option. The later information
|
|
|
539 is only used when the used in the GNU libc. */
|
|
|
540 #ifdef _LIBC
|
|
|
541 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|
|
|
542 || (optind < nonoption_flags_len \
|
|
|
543 && __getopt_nonoption_flags[optind] == '1'))
|
|
|
544 #else
|
|
|
545 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
|
|
546 #endif
|
|
|
547
|
|
|
548 if (nextchar == NULL || *nextchar == '\0')
|
|
|
549 {
|
|
|
550 /* Advance to the next ARGV-element. */
|
|
|
551
|
|
|
552 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
|
|
553 moved back by the user (who may also have changed the arguments). */
|
|
|
554 if (last_nonopt > optind)
|
|
|
555 last_nonopt = optind;
|
|
|
556 if (first_nonopt > optind)
|
|
|
557 first_nonopt = optind;
|
|
|
558
|
|
|
559 if (ordering == PERMUTE)
|
|
|
560 {
|
|
|
561 /* If we have just processed some options following some non-options,
|
|
|
562 exchange them so that the options come first. */
|
|
|
563
|
|
|
564 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
565 exchange ((char **) argv);
|
|
|
566 else if (last_nonopt != optind)
|
|
|
567 first_nonopt = optind;
|
|
|
568
|
|
|
569 /* Skip any additional non-options
|
|
|
570 and extend the range of non-options previously skipped. */
|
|
|
571
|
|
|
572 while (optind < argc && NONOPTION_P)
|
|
|
573 optind++;
|
|
|
574 last_nonopt = optind;
|
|
|
575 }
|
|
|
576
|
|
|
577 /* The special ARGV-element `--' means premature end of options.
|
|
|
578 Skip it like a null option,
|
|
|
579 then exchange with previous non-options as if it were an option,
|
|
|
580 then skip everything else like a non-option. */
|
|
|
581
|
|
|
582 if (optind != argc && !strcmp (argv[optind], "--"))
|
|
|
583 {
|
|
|
584 optind++;
|
|
|
585
|
|
|
586 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
587 exchange ((char **) argv);
|
|
|
588 else if (first_nonopt == last_nonopt)
|
|
|
589 first_nonopt = optind;
|
|
|
590 last_nonopt = argc;
|
|
|
591
|
|
|
592 optind = argc;
|
|
|
593 }
|
|
|
594
|
|
|
595 /* If we have done all the ARGV-elements, stop the scan
|
|
|
596 and back over any non-options that we skipped and permuted. */
|
|
|
597
|
|
|
598 if (optind == argc)
|
|
|
599 {
|
|
|
600 /* Set the next-arg-index to point at the non-options
|
|
|
601 that we previously skipped, so the caller will digest them. */
|
|
|
602 if (first_nonopt != last_nonopt)
|
|
|
603 optind = first_nonopt;
|
|
|
604 return -1;
|
|
|
605 }
|
|
|
606
|
|
|
607 /* If we have come to a non-option and did not permute it,
|
|
|
608 either stop the scan or describe it to the caller and pass it by. */
|
|
|
609
|
|
|
610 if (NONOPTION_P)
|
|
|
611 {
|
|
|
612 if (ordering == REQUIRE_ORDER)
|
|
|
613 return -1;
|
|
|
614 optarg = argv[optind++];
|
|
|
615 return 1;
|
|
|
616 }
|
|
|
617
|
|
|
618 /* We have found another option-ARGV-element.
|
|
|
619 Skip the initial punctuation. */
|
|
|
620
|
|
|
621 nextchar = (argv[optind] + 1
|
|
|
622 + (longopts != NULL && argv[optind][1] == '-'));
|
|
|
623 }
|
|
|
624
|
|
|
625 /* Decode the current option-ARGV-element. */
|
|
|
626
|
|
|
627 /* Check whether the ARGV-element is a long option.
|
|
|
628
|
|
|
629 If long_only and the ARGV-element has the form "-f", where f is
|
|
|
630 a valid short option, don't consider it an abbreviated form of
|
|
|
631 a long option that starts with f. Otherwise there would be no
|
|
|
632 way to give the -f short option.
|
|
|
633
|
|
|
634 On the other hand, if there's a long option "fubar" and
|
|
|
635 the ARGV-element is "-fu", do consider that an abbreviation of
|
|
|
636 the long option, just like "--fu", and not "-f" with arg "u".
|
|
|
637
|
|
|
638 This distinction seems to be the most useful approach. */
|
|
|
639
|
|
|
640 if (longopts != NULL
|
|
|
641 && (argv[optind][1] == '-'
|
|
|
642 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
|
|
|
643 {
|
|
|
644 char *nameend;
|
|
|
645 const struct option *p;
|
|
|
646 const struct option *pfound = NULL;
|
|
|
647 int exact = 0;
|
|
|
648 int ambig = 0;
|
|
|
649 int indfound = -1;
|
|
|
650 int option_index;
|
|
|
651
|
|
|
652 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
|
|
|
653 /* Do nothing. */ ;
|
|
|
654
|
|
|
655 /* Test all long options for either exact match
|
|
|
656 or abbreviated matches. */
|
|
|
657 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
658 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
659 {
|
|
|
660 if ((unsigned int) (nameend - nextchar)
|
|
|
661 == (unsigned int) strlen (p->name))
|
|
|
662 {
|
|
|
663 /* Exact match found. */
|
|
|
664 pfound = p;
|
|
|
665 indfound = option_index;
|
|
|
666 exact = 1;
|
|
|
667 break;
|
|
|
668 }
|
|
|
669 else if (pfound == NULL)
|
|
|
670 {
|
|
|
671 /* First nonexact match found. */
|
|
|
672 pfound = p;
|
|
|
673 indfound = option_index;
|
|
|
674 }
|
|
|
675 else
|
|
|
676 /* Second or later nonexact match found. */
|
|
|
677 ambig = 1;
|
|
|
678 }
|
|
|
679
|
|
|
680 if (ambig && !exact)
|
|
|
681 {
|
|
|
682 if (opterr)
|
|
|
683 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
|
|
684 argv[0], argv[optind]);
|
|
|
685 nextchar += strlen (nextchar);
|
|
|
686 optind++;
|
|
|
687 optopt = 0;
|
|
|
688 return '?';
|
|
|
689 }
|
|
|
690
|
|
|
691 if (pfound != NULL)
|
|
|
692 {
|
|
|
693 option_index = indfound;
|
|
|
694 optind++;
|
|
|
695 if (*nameend)
|
|
|
696 {
|
|
|
697 /* Don't test has_arg with >, because some C compilers don't
|
|
|
698 allow it to be used on enums. */
|
|
|
699 if (pfound->has_arg)
|
|
|
700 optarg = nameend + 1;
|
|
|
701 else
|
|
|
702 {
|
|
|
703 if (opterr)
|
|
|
704 {
|
|
|
705 if (argv[optind - 1][1] == '-')
|
|
|
706 /* --option */
|
|
|
707 fprintf (stderr,
|
|
|
708 _("%s: option `--%s' doesn't allow an argument\n"),
|
|
|
709 argv[0], pfound->name);
|
|
|
710 else
|
|
|
711 /* +option or -option */
|
|
|
712 fprintf (stderr,
|
|
|
713 _("%s: option `%c%s' doesn't allow an argument\n"),
|
|
|
714 argv[0], argv[optind - 1][0], pfound->name);
|
|
|
715
|
|
|
716 nextchar += strlen (nextchar);
|
|
|
717
|
|
|
718 optopt = pfound->val;
|
|
|
719 return '?';
|
|
|
720 }
|
|
|
721 }
|
|
|
722 }
|
|
|
723 else if (pfound->has_arg == 1)
|
|
|
724 {
|
|
|
725 if (optind < argc)
|
|
|
726 optarg = argv[optind++];
|
|
|
727 else
|
|
|
728 {
|
|
|
729 if (opterr)
|
|
|
730 fprintf (stderr,
|
|
|
731 _("%s: option `%s' requires an argument\n"),
|
|
|
732 argv[0], argv[optind - 1]);
|
|
|
733 nextchar += strlen (nextchar);
|
|
|
734 optopt = pfound->val;
|
|
|
735 return optstring[0] == ':' ? ':' : '?';
|
|
|
736 }
|
|
|
737 }
|
|
|
738 nextchar += strlen (nextchar);
|
|
|
739 if (longind != NULL)
|
|
|
740 *longind = option_index;
|
|
|
741 if (pfound->flag)
|
|
|
742 {
|
|
|
743 *(pfound->flag) = pfound->val;
|
|
|
744 return 0;
|
|
|
745 }
|
|
|
746 return pfound->val;
|
|
|
747 }
|
|
|
748
|
|
|
749 /* Can't find it as a long option. If this is not getopt_long_only,
|
|
|
750 or the option starts with '--' or is not a valid short
|
|
|
751 option, then it's an error.
|
|
|
752 Otherwise interpret it as a short option. */
|
|
|
753 if (!long_only || argv[optind][1] == '-'
|
|
|
754 || my_index (optstring, *nextchar) == NULL)
|
|
|
755 {
|
|
|
756 if (opterr)
|
|
|
757 {
|
|
|
758 if (argv[optind][1] == '-')
|
|
|
759 /* --option */
|
|
|
760 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
|
|
761 argv[0], nextchar);
|
|
|
762 else
|
|
|
763 /* +option or -option */
|
|
|
764 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
|
|
765 argv[0], argv[optind][0], nextchar);
|
|
|
766 }
|
|
|
767 nextchar = (char *) "";
|
|
|
768 optind++;
|
|
|
769 optopt = 0;
|
|
|
770 return '?';
|
|
|
771 }
|
|
|
772 }
|
|
|
773
|
|
|
774 /* Look at and handle the next short option-character. */
|
|
|
775
|
|
|
776 {
|
|
|
777 char c = *nextchar++;
|
|
|
778 char *temp = my_index (optstring, c);
|
|
|
779
|
|
|
780 /* Increment `optind' when we start to process its last character. */
|
|
|
781 if (*nextchar == '\0')
|
|
|
782 ++optind;
|
|
|
783
|
|
|
784 if (temp == NULL || c == ':')
|
|
|
785 {
|
|
|
786 if (opterr)
|
|
|
787 {
|
|
|
788 if (posixly_correct)
|
|
|
789 /* 1003.2 specifies the format of this message. */
|
|
|
790 fprintf (stderr, _("%s: illegal option -- %c\n"),
|
|
|
791 argv[0], c);
|
|
|
792 else
|
|
|
793 fprintf (stderr, _("%s: invalid option -- %c\n"),
|
|
|
794 argv[0], c);
|
|
|
795 }
|
|
|
796 optopt = c;
|
|
|
797 return '?';
|
|
|
798 }
|
|
|
799 /* Convenience. Treat POSIX -W foo same as long option --foo */
|
|
|
800 if (temp[0] == 'W' && temp[1] == ';')
|
|
|
801 {
|
|
|
802 char *nameend;
|
|
|
803 const struct option *p;
|
|
|
804 const struct option *pfound = NULL;
|
|
|
805 int exact = 0;
|
|
|
806 int ambig = 0;
|
|
|
807 int indfound = 0;
|
|
|
808 int option_index;
|
|
|
809
|
|
|
810 /* This is an option that requires an argument. */
|
|
|
811 if (*nextchar != '\0')
|
|
|
812 {
|
|
|
813 optarg = nextchar;
|
|
|
814 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
815 we must advance to the next element now. */
|
|
|
816 optind++;
|
|
|
817 }
|
|
|
818 else if (optind == argc)
|
|
|
819 {
|
|
|
820 if (opterr)
|
|
|
821 {
|
|
|
822 /* 1003.2 specifies the format of this message. */
|
|
|
823 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
|
|
824 argv[0], c);
|
|
|
825 }
|
|
|
826 optopt = c;
|
|
|
827 if (optstring[0] == ':')
|
|
|
828 c = ':';
|
|
|
829 else
|
|
|
830 c = '?';
|
|
|
831 return c;
|
|
|
832 }
|
|
|
833 else
|
|
|
834 /* We already incremented `optind' once;
|
|
|
835 increment it again when taking next ARGV-elt as argument. */
|
|
|
836 optarg = argv[optind++];
|
|
|
837
|
|
|
838 /* optarg is now the argument, see if it's in the
|
|
|
839 table of longopts. */
|
|
|
840
|
|
|
841 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
|
|
|
842 /* Do nothing. */ ;
|
|
|
843
|
|
|
844 /* Test all long options for either exact match
|
|
|
845 or abbreviated matches. */
|
|
|
846 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
847 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
848 {
|
|
|
849 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
|
|
|
850 {
|
|
|
851 /* Exact match found. */
|
|
|
852 pfound = p;
|
|
|
853 indfound = option_index;
|
|
|
854 exact = 1;
|
|
|
855 break;
|
|
|
856 }
|
|
|
857 else if (pfound == NULL)
|
|
|
858 {
|
|
|
859 /* First nonexact match found. */
|
|
|
860 pfound = p;
|
|
|
861 indfound = option_index;
|
|
|
862 }
|
|
|
863 else
|
|
|
864 /* Second or later nonexact match found. */
|
|
|
865 ambig = 1;
|
|
|
866 }
|
|
|
867 if (ambig && !exact)
|
|
|
868 {
|
|
|
869 if (opterr)
|
|
|
870 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
|
|
871 argv[0], argv[optind]);
|
|
|
872 nextchar += strlen (nextchar);
|
|
|
873 optind++;
|
|
|
874 return '?';
|
|
|
875 }
|
|
|
876 if (pfound != NULL)
|
|
|
877 {
|
|
|
878 option_index = indfound;
|
|
|
879 if (*nameend)
|
|
|
880 {
|
|
|
881 /* Don't test has_arg with >, because some C compilers don't
|
|
|
882 allow it to be used on enums. */
|
|
|
883 if (pfound->has_arg)
|
|
|
884 optarg = nameend + 1;
|
|
|
885 else
|
|
|
886 {
|
|
|
887 if (opterr)
|
|
|
888 fprintf (stderr, _("\
|
|
|
889 %s: option `-W %s' doesn't allow an argument\n"),
|
|
|
890 argv[0], pfound->name);
|
|
|
891
|
|
|
892 nextchar += strlen (nextchar);
|
|
|
893 return '?';
|
|
|
894 }
|
|
|
895 }
|
|
|
896 else if (pfound->has_arg == 1)
|
|
|
897 {
|
|
|
898 if (optind < argc)
|
|
|
899 optarg = argv[optind++];
|
|
|
900 else
|
|
|
901 {
|
|
|
902 if (opterr)
|
|
|
903 fprintf (stderr,
|
|
|
904 _("%s: option `%s' requires an argument\n"),
|
|
|
905 argv[0], argv[optind - 1]);
|
|
|
906 nextchar += strlen (nextchar);
|
|
|
907 return optstring[0] == ':' ? ':' : '?';
|
|
|
908 }
|
|
|
909 }
|
|
|
910 nextchar += strlen (nextchar);
|
|
|
911 if (longind != NULL)
|
|
|
912 *longind = option_index;
|
|
|
913 if (pfound->flag)
|
|
|
914 {
|
|
|
915 *(pfound->flag) = pfound->val;
|
|
|
916 return 0;
|
|
|
917 }
|
|
|
918 return pfound->val;
|
|
|
919 }
|
|
|
920 nextchar = NULL;
|
|
|
921 return 'W'; /* Let the application handle it. */
|
|
|
922 }
|
|
|
923 if (temp[1] == ':')
|
|
|
924 {
|
|
|
925 if (temp[2] == ':')
|
|
|
926 {
|
|
|
927 /* This is an option that accepts an argument optionally. */
|
|
|
928 if (*nextchar != '\0')
|
|
|
929 {
|
|
|
930 optarg = nextchar;
|
|
|
931 optind++;
|
|
|
932 }
|
|
|
933 else
|
|
|
934 optarg = NULL;
|
|
|
935 nextchar = NULL;
|
|
|
936 }
|
|
|
937 else
|
|
|
938 {
|
|
|
939 /* This is an option that requires an argument. */
|
|
|
940 if (*nextchar != '\0')
|
|
|
941 {
|
|
|
942 optarg = nextchar;
|
|
|
943 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
944 we must advance to the next element now. */
|
|
|
945 optind++;
|
|
|
946 }
|
|
|
947 else if (optind == argc)
|
|
|
948 {
|
|
|
949 if (opterr)
|
|
|
950 {
|
|
|
951 /* 1003.2 specifies the format of this message. */
|
|
|
952 fprintf (stderr,
|
|
|
953 _("%s: option requires an argument -- %c\n"),
|
|
|
954 argv[0], c);
|
|
|
955 }
|
|
|
956 optopt = c;
|
|
|
957 if (optstring[0] == ':')
|
|
|
958 c = ':';
|
|
|
959 else
|
|
|
960 c = '?';
|
|
|
961 }
|
|
|
962 else
|
|
|
963 /* We already incremented `optind' once;
|
|
|
964 increment it again when taking next ARGV-elt as argument. */
|
|
|
965 optarg = argv[optind++];
|
|
|
966 nextchar = NULL;
|
|
|
967 }
|
|
|
968 }
|
|
|
969 return c;
|
|
|
970 }
|
|
|
971 }
|
|
|
972
|
|
|
973 int
|
|
|
974 getopt (int argc, char *const *argv, const char *optstring)
|
|
|
975 {
|
|
|
976 return _getopt_internal (argc, argv, optstring,
|
|
|
977 (const struct option *) 0,
|
|
|
978 (int *) 0,
|
|
|
979 0);
|
|
|
980 }
|
|
|
981
|
|
|
982 #endif /* Not ELIDE_CODE. */
|
|
|
983
|
|
|
984 #ifdef TEST
|
|
|
985
|
|
|
986 /* Compile with -DTEST to make an executable for use in testing
|
|
|
987 the above definition of `getopt'. */
|
|
|
988
|
|
|
989 int
|
|
|
990 main (int argc, char **argv)
|
|
|
991 {
|
|
|
992 int c;
|
|
|
993 int digit_optind = 0;
|
|
|
994
|
|
|
995 while (1)
|
|
|
996 {
|
|
|
997 int this_option_optind = optind ? optind : 1;
|
|
|
998
|
|
|
999 c = getopt (argc, argv, "abc:d:0123456789");
|
|
|
1000 if (c == -1)
|
|
|
1001 break;
|
|
|
1002
|
|
|
1003 switch (c)
|
|
|
1004 {
|
|
|
1005 case '0':
|
|
|
1006 case '1':
|
|
|
1007 case '2':
|
|
|
1008 case '3':
|
|
|
1009 case '4':
|
|
|
1010 case '5':
|
|
|
1011 case '6':
|
|
|
1012 case '7':
|
|
|
1013 case '8':
|
|
|
1014 case '9':
|
|
|
1015 if (digit_optind != 0 && digit_optind != this_option_optind)
|
|
|
1016 printf ("digits occur in two different argv-elements.\n");
|
|
|
1017 digit_optind = this_option_optind;
|
|
|
1018 printf ("option %c\n", c);
|
|
|
1019 break;
|
|
|
1020
|
|
|
1021 case 'a':
|
|
|
1022 printf ("option a\n");
|
|
|
1023 break;
|
|
|
1024
|
|
|
1025 case 'b':
|
|
|
1026 printf ("option b\n");
|
|
|
1027 break;
|
|
|
1028
|
|
|
1029 case 'c':
|
|
|
1030 printf ("option c with value `%s'\n", optarg);
|
|
|
1031 break;
|
|
|
1032
|
|
|
1033 case '?':
|
|
|
1034 break;
|
|
|
1035
|
|
|
1036 default:
|
|
|
1037 printf ("?? getopt returned character code 0%o ??\n", c);
|
|
|
1038 }
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 if (optind < argc)
|
|
|
1042 {
|
|
|
1043 printf ("non-option ARGV-elements: ");
|
|
|
1044 while (optind < argc)
|
|
|
1045 printf ("%s ", argv[optind++]);
|
|
|
1046 printf ("\n");
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 exit (0);
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 #endif /* TEST */
|
