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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 Copyright (C) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001
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6 Free Software Foundation, Inc.
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7 This file is part of the GNU C Library.
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8
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9 The GNU C Library is free software; you can redistribute it and/or
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10 modify it under the terms of the GNU Lesser General Public
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11 License as published by the Free Software Foundation; either
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12 version 2.1 of the License, or (at your option) any later version.
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13
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14 The GNU C Library is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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17 Lesser General Public License for more details.
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18
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19 You should have received a copy of the GNU Lesser General Public
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20 License along with the GNU C Library; if not, write to the Free
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21 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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22 02111-1307 USA. */
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23
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24 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
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25 Ditto for AIX 3.2 and <stdlib.h>. */
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26 #ifndef _NO_PROTO
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27 # define _NO_PROTO
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28 #endif
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29
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30 #ifdef HAVE_CONFIG_H
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31 # include <config.h>
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32 #endif
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33
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34 #if !defined __STDC__ || !__STDC__
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35 /* This is a separate conditional since some stdc systems
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36 reject `defined (const)'. */
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37 # ifndef const
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38 # define const
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39 # endif
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40 #endif
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41
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42 #include <stdio.h>
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43
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44 /* Comment out all this code if we are using the GNU C Library, and are not
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45 actually compiling the library itself. This code is part of the GNU C
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46 Library, but also included in many other GNU distributions. Compiling
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47 and linking in this code is a waste when using the GNU C library
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48 (especially if it is a shared library). Rather than having every GNU
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49 program understand `configure --with-gnu-libc' and omit the object files,
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50 it is simpler to just do this in the source for each such file. */
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51
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52 #define GETOPT_INTERFACE_VERSION 2
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53 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
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54 # include <gnu-versions.h>
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55 # if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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56 # define ELIDE_CODE
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57 # endif
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58 #endif
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59
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60 #ifndef ELIDE_CODE
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61
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62
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63 /* This needs to come after some library #include
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64 to get __GNU_LIBRARY__ defined. */
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65 #ifdef __GNU_LIBRARY__
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66 /* Don't include stdlib.h for non-GNU C libraries because some of them
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67 contain conflicting prototypes for getopt. */
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68 # include <stdlib.h>
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69 # include <unistd.h>
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70 #endif /* GNU C library. */
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71
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72 #ifdef VMS
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73 # include <unixlib.h>
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74 # if HAVE_STRING_H - 0
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75 # include <string.h>
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76 # endif
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77 #endif
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78
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79 #ifndef _
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80 /* This is for other GNU distributions with internationalized messages. */
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81 # if defined HAVE_LIBINTL_H || defined _LIBC
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82 # include <libintl.h>
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83 # ifndef _
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84 # define _(msgid) gettext (msgid)
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85 # endif
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86 # else
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87 # define _(msgid) (msgid)
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88 # endif
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89 #endif
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90
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91 /* This version of `getopt' appears to the caller like standard Unix `getopt'
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92 but it behaves differently for the user, since it allows the user
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93 to intersperse the options with the other arguments.
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94
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95 As `getopt' works, it permutes the elements of ARGV so that,
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96 when it is done, all the options precede everything else. Thus
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97 all application programs are extended to handle flexible argument order.
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98
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99 Setting the environment variable POSIXLY_CORRECT disables permutation.
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100 Then the behavior is completely standard.
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101
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102 GNU application programs can use a third alternative mode in which
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103 they can distinguish the relative order of options and other arguments. */
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104
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105 #include "getopt.h"
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106
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107 /* For communication from `getopt' to the caller.
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108 When `getopt' finds an option that takes an argument,
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109 the argument value is returned here.
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110 Also, when `ordering' is RETURN_IN_ORDER,
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111 each non-option ARGV-element is returned here. */
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112
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113 char *optarg;
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114
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115 /* Index in ARGV of the next element to be scanned.
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116 This is used for communication to and from the caller
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117 and for communication between successive calls to `getopt'.
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118
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119 On entry to `getopt', zero means this is the first call; initialize.
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120
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121 When `getopt' returns -1, this is the index of the first of the
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122 non-option elements that the caller should itself scan.
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123
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124 Otherwise, `optind' communicates from one call to the next
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125 how much of ARGV has been scanned so far. */
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126
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127 /* 1003.2 says this must be 1 before any call. */
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128 int optind = 1;
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129
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130 /* Formerly, initialization of getopt depended on optind==0, which
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131 causes problems with re-calling getopt as programs generally don't
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132 know that. */
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133
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134 int __getopt_initialized;
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135
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136 /* The next char to be scanned in the option-element
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137 in which the last option character we returned was found.
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138 This allows us to pick up the scan where we left off.
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139
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140 If this is zero, or a null string, it means resume the scan
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141 by advancing to the next ARGV-element. */
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142
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143 static char *nextchar;
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144
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145 /* Callers store zero here to inhibit the error message
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146 for unrecognized options. */
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147
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148 int opterr = 1;
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149
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150 /* Set to an option character which was unrecognized.
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151 This must be initialized on some systems to avoid linking in the
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152 system's own getopt implementation. */
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153
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154 int optopt = '?';
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155
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156 /* Describe how to deal with options that follow non-option ARGV-elements.
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157
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158 If the caller did not specify anything,
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159 the default is REQUIRE_ORDER if the environment variable
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160 POSIXLY_CORRECT is defined, PERMUTE otherwise.
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161
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162 REQUIRE_ORDER means don't recognize them as options;
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163 stop option processing when the first non-option is seen.
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164 This is what Unix does.
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165 This mode of operation is selected by either setting the environment
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166 variable POSIXLY_CORRECT, or using `+' as the first character
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167 of the list of option characters.
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168
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169 PERMUTE is the default. We permute the contents of ARGV as we scan,
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170 so that eventually all the non-options are at the end. This allows options
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171 to be given in any order, even with programs that were not written to
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172 expect this.
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173
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174 RETURN_IN_ORDER is an option available to programs that were written
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175 to expect options and other ARGV-elements in any order and that care about
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176 the ordering of the two. We describe each non-option ARGV-element
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177 as if it were the argument of an option with character code 1.
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178 Using `-' as the first character of the list of option characters
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179 selects this mode of operation.
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180
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181 The special argument `--' forces an end of option-scanning regardless
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182 of the value of `ordering'. In the case of RETURN_IN_ORDER, only
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183 `--' can cause `getopt' to return -1 with `optind' != ARGC. */
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184
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185 static enum
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186 {
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187 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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188 } ordering;
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189
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190 /* Value of POSIXLY_CORRECT environment variable. */
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191 static char *posixly_correct;
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192
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193 #ifdef __GNU_LIBRARY__
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194 /* We want to avoid inclusion of string.h with non-GNU libraries
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195 because there are many ways it can cause trouble.
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196 On some systems, it contains special magic macros that don't work
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197 in GCC. */
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198 # include <string.h>
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199 # define my_index strchr
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200 #else
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201
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202 # if HAVE_STRING_H
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203 # include <string.h>
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204 # else
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205 # include <strings.h>
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206 # endif
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207
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208 /* Avoid depending on library functions or files
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209 whose names are inconsistent. */
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210
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211 #ifndef getenv
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212 extern char *getenv ();
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213 #endif
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214
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215 static char *
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216 my_index (str, chr)
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217 const char *str;
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218 int chr;
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219 {
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220 while (*str)
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221 {
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222 if (*str == chr)
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223 return (char *) str;
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224 str++;
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225 }
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226 return 0;
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227 }
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228
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229 /* If using GCC, we can safely declare strlen this way.
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230 If not using GCC, it is ok not to declare it. */
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231 #ifdef __GNUC__
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232 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
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233 That was relevant to code that was here before. */
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234 # if (!defined __STDC__ || !__STDC__) && !defined strlen
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235 /* gcc with -traditional declares the built-in strlen to return int,
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236 and has done so at least since version 2.4.5. -- rms. */
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237 extern int strlen (const char *);
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238 # endif /* not __STDC__ */
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239 #endif /* __GNUC__ */
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240
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241 #endif /* not __GNU_LIBRARY__ */
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242
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243 /* Handle permutation of arguments. */
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244
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245 /* Describe the part of ARGV that contains non-options that have
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246 been skipped. `first_nonopt' is the index in ARGV of the first of them;
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247 `last_nonopt' is the index after the last of them. */
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248
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249 static int first_nonopt;
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250 static int last_nonopt;
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251
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252 #ifdef _LIBC
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253 /* Stored original parameters.
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254 XXX This is no good solution. We should rather copy the args so
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255 that we can compare them later. But we must not use malloc(3). */
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256 extern int __libc_argc;
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257 extern char **__libc_argv;
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258
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259 /* Bash 2.0 gives us an environment variable containing flags
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260 indicating ARGV elements that should not be considered arguments. */
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261
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262 # ifdef USE_NONOPTION_FLAGS
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263 /* Defined in getopt_init.c */
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264 extern char *__getopt_nonoption_flags;
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265
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266 static int nonoption_flags_max_len;
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267 static int nonoption_flags_len;
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268 # endif
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269
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270 # ifdef USE_NONOPTION_FLAGS
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271 # define SWAP_FLAGS(ch1, ch2) \
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272 if (nonoption_flags_len > 0) \
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273 { \
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274 char __tmp = __getopt_nonoption_flags[ch1]; \
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275 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
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276 __getopt_nonoption_flags[ch2] = __tmp; \
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277 }
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278 # else
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279 # define SWAP_FLAGS(ch1, ch2)
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280 # endif
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281 #else /* !_LIBC */
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282 # define SWAP_FLAGS(ch1, ch2)
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283 #endif /* _LIBC */
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284
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285 /* Exchange two adjacent subsequences of ARGV.
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286 One subsequence is elements [first_nonopt,last_nonopt)
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287 which contains all the non-options that have been skipped so far.
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288 The other is elements [last_nonopt,optind), which contains all
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289 the options processed since those non-options were skipped.
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290
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291 `first_nonopt' and `last_nonopt' are relocated so that they describe
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292 the new indices of the non-options in ARGV after they are moved. */
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293
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294 #if defined __STDC__ && __STDC__
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295 static void exchange (char **);
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296 #endif
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297
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298 static void
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299 exchange (argv)
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300 char **argv;
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301 {
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302 int bottom = first_nonopt;
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303 int middle = last_nonopt;
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304 int top = optind;
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305 char *tem;
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306
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307 /* Exchange the shorter segment with the far end of the longer segment.
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308 That puts the shorter segment into the right place.
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309 It leaves the longer segment in the right place overall,
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310 but it consists of two parts that need to be swapped next. */
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311
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312 #if defined _LIBC && defined USE_NONOPTION_FLAGS
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313 /* First make sure the handling of the `__getopt_nonoption_flags'
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314 string can work normally. Our top argument must be in the range
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315 of the string. */
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316 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
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317 {
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318 /* We must extend the array. The user plays games with us and
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319 presents new arguments. */
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320 char *new_str = malloc (top + 1);
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321 if (new_str == NULL)
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322 nonoption_flags_len = nonoption_flags_max_len = 0;
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323 else
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324 {
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325 memset (__mempcpy (new_str, __getopt_nonoption_flags,
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326 nonoption_flags_max_len),
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327 '\0', top + 1 - nonoption_flags_max_len);
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328 nonoption_flags_max_len = top + 1;
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329 __getopt_nonoption_flags = new_str;
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330 }
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331 }
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332 #endif
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333
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334 while (top > middle && middle > bottom)
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335 {
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336 if (top - middle > middle - bottom)
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337 {
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338 /* Bottom segment is the short one. */
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339 int len = middle - bottom;
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340 register int i;
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341
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342 /* Swap it with the top part of the top segment. */
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343 for (i = 0; i < len; i++)
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344 {
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345 tem = argv[bottom + i];
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346 argv[bottom + i] = argv[top - (middle - bottom) + i];
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347 argv[top - (middle - bottom) + i] = tem;
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348 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
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349 }
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350 /* Exclude the moved bottom segment from further swapping. */
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351 top -= len;
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352 }
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353 else
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354 {
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355 /* Top segment is the short one. */
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356 int len = top - middle;
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357 register int i;
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358
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359 /* Swap it with the bottom part of the bottom 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[middle + i];
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364 argv[middle + i] = tem;
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365 SWAP_FLAGS (bottom + i, middle + i);
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366 }
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367 /* Exclude the moved top segment from further swapping. */
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368 bottom += len;
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369 }
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370 }
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371
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372 /* Update records for the slots the non-options now occupy. */
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373
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374 first_nonopt += (optind - last_nonopt);
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375 last_nonopt = optind;
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376 }
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377
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378 /* Initialize the internal data when the first call is made. */
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379
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380 #if defined __STDC__ && __STDC__
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381 static const char *_getopt_initialize (int, char *const *, const char *);
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382 #endif
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383 static const char *
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384 _getopt_initialize (argc, argv, optstring)
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385 int argc;
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386 char *const *argv;
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387 const char *optstring;
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388 {
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389 /* Start processing options with ARGV-element 1 (since ARGV-element 0
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390 is the program name); the sequence of previously skipped
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391 non-option ARGV-elements is empty. */
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392
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393 first_nonopt = last_nonopt = optind;
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394
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395 nextchar = NULL;
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396
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397 posixly_correct = getenv ("POSIXLY_CORRECT");
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398
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399 /* Determine how to handle the ordering of options and nonoptions. */
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400
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401 if (optstring[0] == '-')
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402 {
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403 ordering = RETURN_IN_ORDER;
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404 ++optstring;
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405 }
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406 else if (optstring[0] == '+')
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407 {
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408 ordering = REQUIRE_ORDER;
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409 ++optstring;
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410 }
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411 else if (posixly_correct != NULL)
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412 ordering = REQUIRE_ORDER;
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413 else
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414 ordering = PERMUTE;
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415
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|
|
416 #if defined _LIBC && defined USE_NONOPTION_FLAGS
|
|
|
417 if (posixly_correct == NULL
|
|
|
418 && argc == __libc_argc && argv == __libc_argv)
|
|
|
419 {
|
|
|
420 if (nonoption_flags_max_len == 0)
|
|
|
421 {
|
|
|
422 if (__getopt_nonoption_flags == NULL
|
|
|
423 || __getopt_nonoption_flags[0] == '\0')
|
|
|
424 nonoption_flags_max_len = -1;
|
|
|
425 else
|
|
|
426 {
|
|
|
427 const char *orig_str = __getopt_nonoption_flags;
|
|
|
428 int len = nonoption_flags_max_len = strlen (orig_str);
|
|
|
429 if (nonoption_flags_max_len < argc)
|
|
|
430 nonoption_flags_max_len = argc;
|
|
|
431 __getopt_nonoption_flags =
|
|
|
432 (char *) malloc (nonoption_flags_max_len);
|
|
|
433 if (__getopt_nonoption_flags == NULL)
|
|
|
434 nonoption_flags_max_len = -1;
|
|
|
435 else
|
|
|
436 memset (__mempcpy (__getopt_nonoption_flags, orig_str, len),
|
|
|
437 '\0', nonoption_flags_max_len - len);
|
|
|
438 }
|
|
|
439 }
|
|
|
440 nonoption_flags_len = nonoption_flags_max_len;
|
|
|
441 }
|
|
|
442 else
|
|
|
443 nonoption_flags_len = 0;
|
|
|
444 #endif
|
|
|
445
|
|
|
446 return optstring;
|
|
|
447 }
|
|
|
448
|
|
|
449 /* Scan elements of ARGV (whose length is ARGC) for option characters
|
|
|
450 given in OPTSTRING.
|
|
|
451
|
|
|
452 If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
|
|
453 then it is an option element. The characters of this element
|
|
|
454 (aside from the initial '-') are option characters. If `getopt'
|
|
|
455 is called repeatedly, it returns successively each of the option characters
|
|
|
456 from each of the option elements.
|
|
|
457
|
|
|
458 If `getopt' finds another option character, it returns that character,
|
|
|
459 updating `optind' and `nextchar' so that the next call to `getopt' can
|
|
|
460 resume the scan with the following option character or ARGV-element.
|
|
|
461
|
|
|
462 If there are no more option characters, `getopt' returns -1.
|
|
|
463 Then `optind' is the index in ARGV of the first ARGV-element
|
|
|
464 that is not an option. (The ARGV-elements have been permuted
|
|
|
465 so that those that are not options now come last.)
|
|
|
466
|
|
|
467 OPTSTRING is a string containing the legitimate option characters.
|
|
|
468 If an option character is seen that is not listed in OPTSTRING,
|
|
|
469 return '?' after printing an error message. If you set `opterr' to
|
|
|
470 zero, the error message is suppressed but we still return '?'.
|
|
|
471
|
|
|
472 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
|
|
473 so the following text in the same ARGV-element, or the text of the following
|
|
|
474 ARGV-element, is returned in `optarg'. Two colons mean an option that
|
|
|
475 wants an optional arg; if there is text in the current ARGV-element,
|
|
|
476 it is returned in `optarg', otherwise `optarg' is set to zero.
|
|
|
477
|
|
|
478 If OPTSTRING starts with `-' or `+', it requests different methods of
|
|
|
479 handling the non-option ARGV-elements.
|
|
|
480 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
|
|
481
|
|
|
482 Long-named options begin with `--' instead of `-'.
|
|
|
483 Their names may be abbreviated as long as the abbreviation is unique
|
|
|
484 or is an exact match for some defined option. If they have an
|
|
|
485 argument, it follows the option name in the same ARGV-element, separated
|
|
|
486 from the option name by a `=', or else the in next ARGV-element.
|
|
|
487 When `getopt' finds a long-named option, it returns 0 if that option's
|
|
|
488 `flag' field is nonzero, the value of the option's `val' field
|
|
|
489 if the `flag' field is zero.
|
|
|
490
|
|
|
491 The elements of ARGV aren't really const, because we permute them.
|
|
|
492 But we pretend they're const in the prototype to be compatible
|
|
|
493 with other systems.
|
|
|
494
|
|
|
495 LONGOPTS is a vector of `struct option' terminated by an
|
|
|
496 element containing a name which is zero.
|
|
|
497
|
|
|
498 LONGIND returns the index in LONGOPT of the long-named option found.
|
|
|
499 It is only valid when a long-named option has been found by the most
|
|
|
500 recent call.
|
|
|
501
|
|
|
502 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
|
|
503 long-named options. */
|
|
|
504
|
|
|
505 int
|
|
|
506 _getopt_internal (argc, argv, optstring, longopts, longind, long_only)
|
|
|
507 int argc;
|
|
|
508 char *const *argv;
|
|
|
509 const char *optstring;
|
|
|
510 const struct option *longopts;
|
|
|
511 int32_t *longind;
|
|
|
512 int long_only;
|
|
|
513 {
|
|
|
514 int print_errors = opterr;
|
|
|
515 if (optstring[0] == ':')
|
|
|
516 print_errors = 0;
|
|
|
517
|
|
|
518 if (argc < 1)
|
|
|
519 return -1;
|
|
|
520
|
|
|
521 optarg = NULL;
|
|
|
522
|
|
|
523 if (optind == 0 || !__getopt_initialized)
|
|
|
524 {
|
|
|
525 if (optind == 0)
|
|
|
526 optind = 1; /* Don't scan ARGV[0], the program name. */
|
|
|
527 optstring = _getopt_initialize (argc, argv, optstring);
|
|
|
528 __getopt_initialized = 1;
|
|
|
529 }
|
|
|
530
|
|
|
531 /* Test whether ARGV[optind] points to a non-option argument.
|
|
|
532 Either it does not have option syntax, or there is an environment flag
|
|
|
533 from the shell indicating it is not an option. The later information
|
|
|
534 is only used when the used in the GNU libc. */
|
|
|
535 #if defined _LIBC && defined USE_NONOPTION_FLAGS
|
|
|
536 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|
|
|
537 || (optind < nonoption_flags_len \
|
|
|
538 && __getopt_nonoption_flags[optind] == '1'))
|
|
|
539 #else
|
|
|
540 # define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
|
|
541 #endif
|
|
|
542
|
|
|
543 if (nextchar == NULL || *nextchar == '\0')
|
|
|
544 {
|
|
|
545 /* Advance to the next ARGV-element. */
|
|
|
546
|
|
|
547 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
|
|
548 moved back by the user (who may also have changed the arguments). */
|
|
|
549 if (last_nonopt > optind)
|
|
|
550 last_nonopt = optind;
|
|
|
551 if (first_nonopt > optind)
|
|
|
552 first_nonopt = optind;
|
|
|
553
|
|
|
554 if (ordering == PERMUTE)
|
|
|
555 {
|
|
|
556 /* If we have just processed some options following some non-options,
|
|
|
557 exchange them so that the options come first. */
|
|
|
558
|
|
|
559 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
560 exchange ((char **) argv);
|
|
|
561 else if (last_nonopt != optind)
|
|
|
562 first_nonopt = optind;
|
|
|
563
|
|
|
564 /* Skip any additional non-options
|
|
|
565 and extend the range of non-options previously skipped. */
|
|
|
566
|
|
|
567 while (optind < argc && NONOPTION_P)
|
|
|
568 optind++;
|
|
|
569 last_nonopt = optind;
|
|
|
570 }
|
|
|
571
|
|
|
572 /* The special ARGV-element `--' means premature end of options.
|
|
|
573 Skip it like a null option,
|
|
|
574 then exchange with previous non-options as if it were an option,
|
|
|
575 then skip everything else like a non-option. */
|
|
|
576
|
|
|
577 if (optind != argc && !strcmp (argv[optind], "--"))
|
|
|
578 {
|
|
|
579 optind++;
|
|
|
580
|
|
|
581 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
582 exchange ((char **) argv);
|
|
|
583 else if (first_nonopt == last_nonopt)
|
|
|
584 first_nonopt = optind;
|
|
|
585 last_nonopt = argc;
|
|
|
586
|
|
|
587 optind = argc;
|
|
|
588 }
|
|
|
589
|
|
|
590 /* If we have done all the ARGV-elements, stop the scan
|
|
|
591 and back over any non-options that we skipped and permuted. */
|
|
|
592
|
|
|
593 if (optind == argc)
|
|
|
594 {
|
|
|
595 /* Set the next-arg-index to point at the non-options
|
|
|
596 that we previously skipped, so the caller will digest them. */
|
|
|
597 if (first_nonopt != last_nonopt)
|
|
|
598 optind = first_nonopt;
|
|
|
599 return -1;
|
|
|
600 }
|
|
|
601
|
|
|
602 /* If we have come to a non-option and did not permute it,
|
|
|
603 either stop the scan or describe it to the caller and pass it by. */
|
|
|
604
|
|
|
605 if (NONOPTION_P)
|
|
|
606 {
|
|
|
607 if (ordering == REQUIRE_ORDER)
|
|
|
608 return -1;
|
|
|
609 optarg = argv[optind++];
|
|
|
610 return 1;
|
|
|
611 }
|
|
|
612
|
|
|
613 /* We have found another option-ARGV-element.
|
|
|
614 Skip the initial punctuation. */
|
|
|
615
|
|
|
616 nextchar = (argv[optind] + 1
|
|
|
617 + (longopts != NULL && argv[optind][1] == '-'));
|
|
|
618 }
|
|
|
619
|
|
|
620 /* Decode the current option-ARGV-element. */
|
|
|
621
|
|
|
622 /* Check whether the ARGV-element is a long option.
|
|
|
623
|
|
|
624 If long_only and the ARGV-element has the form "-f", where f is
|
|
|
625 a valid short option, don't consider it an abbreviated form of
|
|
|
626 a long option that starts with f. Otherwise there would be no
|
|
|
627 way to give the -f short option.
|
|
|
628
|
|
|
629 On the other hand, if there's a long option "fubar" and
|
|
|
630 the ARGV-element is "-fu", do consider that an abbreviation of
|
|
|
631 the long option, just like "--fu", and not "-f" with arg "u".
|
|
|
632
|
|
|
633 This distinction seems to be the most useful approach. */
|
|
|
634
|
|
|
635 if (longopts != NULL
|
|
|
636 && (argv[optind][1] == '-'
|
|
|
637 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
|
|
|
638 {
|
|
|
639 char *nameend;
|
|
|
640 const struct option *p;
|
|
|
641 const struct option *pfound = NULL;
|
|
|
642 int exact = 0;
|
|
|
643 int ambig = 0;
|
|
|
644 int indfound = -1;
|
|
|
645 int option_index;
|
|
|
646
|
|
|
647 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
|
|
|
648 /* Do nothing. */ ;
|
|
|
649
|
|
|
650 /* Test all long options for either exact match
|
|
|
651 or abbreviated matches. */
|
|
|
652 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
653 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
654 {
|
|
|
655 if ((unsigned int) (nameend - nextchar)
|
|
|
656 == (unsigned int) strlen (p->name))
|
|
|
657 {
|
|
|
658 /* Exact match found. */
|
|
|
659 pfound = p;
|
|
|
660 indfound = option_index;
|
|
|
661 exact = 1;
|
|
|
662 break;
|
|
|
663 }
|
|
|
664 else if (pfound == NULL)
|
|
|
665 {
|
|
|
666 /* First nonexact match found. */
|
|
|
667 pfound = p;
|
|
|
668 indfound = option_index;
|
|
|
669 }
|
|
|
670 else if (long_only
|
|
|
671 || pfound->has_arg != p->has_arg
|
|
|
672 || pfound->flag != p->flag
|
|
|
673 || pfound->val != p->val)
|
|
|
674 /* Second or later nonexact match found. */
|
|
|
675 ambig = 1;
|
|
|
676 }
|
|
|
677
|
|
|
678 if (ambig && !exact)
|
|
|
679 {
|
|
|
680 if (print_errors)
|
|
|
681 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
|
|
682 argv[0], argv[optind]);
|
|
|
683 nextchar += strlen (nextchar);
|
|
|
684 optind++;
|
|
|
685 optopt = 0;
|
|
|
686 return '?';
|
|
|
687 }
|
|
|
688
|
|
|
689 if (pfound != NULL)
|
|
|
690 {
|
|
|
691 option_index = indfound;
|
|
|
692 optind++;
|
|
|
693 if (*nameend)
|
|
|
694 {
|
|
|
695 /* Don't test has_arg with >, because some C compilers don't
|
|
|
696 allow it to be used on enums. */
|
|
|
697 if (pfound->has_arg)
|
|
|
698 optarg = nameend + 1;
|
|
|
699 else
|
|
|
700 {
|
|
|
701 if (print_errors)
|
|
|
702 {
|
|
|
703 if (argv[optind - 1][1] == '-')
|
|
|
704 /* --option */
|
|
|
705 fprintf (stderr,
|
|
|
706 _("%s: option `--%s' doesn't allow an argument\n"),
|
|
|
707 argv[0], pfound->name);
|
|
|
708 else
|
|
|
709 /* +option or -option */
|
|
|
710 fprintf (stderr,
|
|
|
711 _("%s: option `%c%s' doesn't allow an argument\n"),
|
|
|
712 argv[0], argv[optind - 1][0], pfound->name);
|
|
|
713 }
|
|
|
714
|
|
|
715 nextchar += strlen (nextchar);
|
|
|
716
|
|
|
717 optopt = pfound->val;
|
|
|
718 return '?';
|
|
|
719 }
|
|
|
720 }
|
|
|
721 else if (pfound->has_arg == 1)
|
|
|
722 {
|
|
|
723 if (optind < argc)
|
|
|
724 optarg = argv[optind++];
|
|
|
725 else
|
|
|
726 {
|
|
|
727 if (print_errors)
|
|
|
728 fprintf (stderr,
|
|
|
729 _("%s: option `%s' requires an argument\n"),
|
|
|
730 argv[0], argv[optind - 1]);
|
|
|
731 nextchar += strlen (nextchar);
|
|
|
732 optopt = pfound->val;
|
|
|
733 return optstring[0] == ':' ? ':' : '?';
|
|
|
734 }
|
|
|
735 }
|
|
|
736 nextchar += strlen (nextchar);
|
|
|
737 if (longind != NULL)
|
|
|
738 *longind = option_index;
|
|
|
739 if (pfound->flag)
|
|
|
740 {
|
|
|
741 *(pfound->flag) = pfound->val;
|
|
|
742 return 0;
|
|
|
743 }
|
|
|
744 return pfound->val;
|
|
|
745 }
|
|
|
746
|
|
|
747 /* Can't find it as a long option. If this is not getopt_long_only,
|
|
|
748 or the option starts with '--' or is not a valid short
|
|
|
749 option, then it's an error.
|
|
|
750 Otherwise interpret it as a short option. */
|
|
|
751 if (!long_only || argv[optind][1] == '-'
|
|
|
752 || my_index (optstring, *nextchar) == NULL)
|
|
|
753 {
|
|
|
754 if (print_errors)
|
|
|
755 {
|
|
|
756 if (argv[optind][1] == '-')
|
|
|
757 /* --option */
|
|
|
758 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
|
|
759 argv[0], nextchar);
|
|
|
760 else
|
|
|
761 /* +option or -option */
|
|
|
762 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
|
|
763 argv[0], argv[optind][0], nextchar);
|
|
|
764 }
|
|
|
765 nextchar = (char *) "";
|
|
|
766 optind++;
|
|
|
767 optopt = 0;
|
|
|
768 return '?';
|
|
|
769 }
|
|
|
770 }
|
|
|
771
|
|
|
772 /* Look at and handle the next short option-character. */
|
|
|
773
|
|
|
774 {
|
|
|
775 char c = *nextchar++;
|
|
|
776 char *temp = my_index (optstring, c);
|
|
|
777
|
|
|
778 /* Increment `optind' when we start to process its last character. */
|
|
|
779 if (*nextchar == '\0')
|
|
|
780 ++optind;
|
|
|
781
|
|
|
782 if (temp == NULL || c == ':')
|
|
|
783 {
|
|
|
784 if (print_errors)
|
|
|
785 {
|
|
|
786 if (posixly_correct)
|
|
|
787 /* 1003.2 specifies the format of this message. */
|
|
|
788 fprintf (stderr, _("%s: illegal option -- %c\n"),
|
|
|
789 argv[0], c);
|
|
|
790 else
|
|
|
791 fprintf (stderr, _("%s: invalid option -- %c\n"),
|
|
|
792 argv[0], c);
|
|
|
793 }
|
|
|
794 optopt = c;
|
|
|
795 return '?';
|
|
|
796 }
|
|
|
797 /* Convenience. Treat POSIX -W foo same as long option --foo */
|
|
|
798 if (temp[0] == 'W' && temp[1] == ';')
|
|
|
799 {
|
|
|
800 char *nameend;
|
|
|
801 const struct option *p;
|
|
|
802 const struct option *pfound = NULL;
|
|
|
803 int exact = 0;
|
|
|
804 int ambig = 0;
|
|
|
805 int indfound = 0;
|
|
|
806 int option_index;
|
|
|
807
|
|
|
808 /* This is an option that requires an argument. */
|
|
|
809 if (*nextchar != '\0')
|
|
|
810 {
|
|
|
811 optarg = nextchar;
|
|
|
812 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
813 we must advance to the next element now. */
|
|
|
814 optind++;
|
|
|
815 }
|
|
|
816 else if (optind == argc)
|
|
|
817 {
|
|
|
818 if (print_errors)
|
|
|
819 {
|
|
|
820 /* 1003.2 specifies the format of this message. */
|
|
|
821 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
|
|
822 argv[0], c);
|
|
|
823 }
|
|
|
824 optopt = c;
|
|
|
825 if (optstring[0] == ':')
|
|
|
826 c = ':';
|
|
|
827 else
|
|
|
828 c = '?';
|
|
|
829 return c;
|
|
|
830 }
|
|
|
831 else
|
|
|
832 /* We already incremented `optind' once;
|
|
|
833 increment it again when taking next ARGV-elt as argument. */
|
|
|
834 optarg = argv[optind++];
|
|
|
835
|
|
|
836 /* optarg is now the argument, see if it's in the
|
|
|
837 table of longopts. */
|
|
|
838
|
|
|
839 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
|
|
|
840 /* Do nothing. */ ;
|
|
|
841
|
|
|
842 /* Test all long options for either exact match
|
|
|
843 or abbreviated matches. */
|
|
|
844 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
845 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
846 {
|
|
|
847 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
|
|
|
848 {
|
|
|
849 /* Exact match found. */
|
|
|
850 pfound = p;
|
|
|
851 indfound = option_index;
|
|
|
852 exact = 1;
|
|
|
853 break;
|
|
|
854 }
|
|
|
855 else if (pfound == NULL)
|
|
|
856 {
|
|
|
857 /* First nonexact match found. */
|
|
|
858 pfound = p;
|
|
|
859 indfound = option_index;
|
|
|
860 }
|
|
|
861 else
|
|
|
862 /* Second or later nonexact match found. */
|
|
|
863 ambig = 1;
|
|
|
864 }
|
|
|
865 if (ambig && !exact)
|
|
|
866 {
|
|
|
867 if (print_errors)
|
|
|
868 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
|
|
869 argv[0], argv[optind]);
|
|
|
870 nextchar += strlen (nextchar);
|
|
|
871 optind++;
|
|
|
872 return '?';
|
|
|
873 }
|
|
|
874 if (pfound != NULL)
|
|
|
875 {
|
|
|
876 option_index = indfound;
|
|
|
877 if (*nameend)
|
|
|
878 {
|
|
|
879 /* Don't test has_arg with >, because some C compilers don't
|
|
|
880 allow it to be used on enums. */
|
|
|
881 if (pfound->has_arg)
|
|
|
882 optarg = nameend + 1;
|
|
|
883 else
|
|
|
884 {
|
|
|
885 if (print_errors)
|
|
|
886 fprintf (stderr, _("\
|
|
|
887 %s: option `-W %s' doesn't allow an argument\n"),
|
|
|
888 argv[0], pfound->name);
|
|
|
889
|
|
|
890 nextchar += strlen (nextchar);
|
|
|
891 return '?';
|
|
|
892 }
|
|
|
893 }
|
|
|
894 else if (pfound->has_arg == 1)
|
|
|
895 {
|
|
|
896 if (optind < argc)
|
|
|
897 optarg = argv[optind++];
|
|
|
898 else
|
|
|
899 {
|
|
|
900 if (print_errors)
|
|
|
901 fprintf (stderr,
|
|
|
902 _("%s: option `%s' requires an argument\n"),
|
|
|
903 argv[0], argv[optind - 1]);
|
|
|
904 nextchar += strlen (nextchar);
|
|
|
905 return optstring[0] == ':' ? ':' : '?';
|
|
|
906 }
|
|
|
907 }
|
|
|
908 nextchar += strlen (nextchar);
|
|
|
909 if (longind != NULL)
|
|
|
910 *longind = option_index;
|
|
|
911 if (pfound->flag)
|
|
|
912 {
|
|
|
913 *(pfound->flag) = pfound->val;
|
|
|
914 return 0;
|
|
|
915 }
|
|
|
916 return pfound->val;
|
|
|
917 }
|
|
|
918 nextchar = NULL;
|
|
|
919 return 'W'; /* Let the application handle it. */
|
|
|
920 }
|
|
|
921 if (temp[1] == ':')
|
|
|
922 {
|
|
|
923 if (temp[2] == ':')
|
|
|
924 {
|
|
|
925 /* This is an option that accepts an argument optionally. */
|
|
|
926 if (*nextchar != '\0')
|
|
|
927 {
|
|
|
928 optarg = nextchar;
|
|
|
929 optind++;
|
|
|
930 }
|
|
|
931 else
|
|
|
932 optarg = NULL;
|
|
|
933 nextchar = NULL;
|
|
|
934 }
|
|
|
935 else
|
|
|
936 {
|
|
|
937 /* This is an option that requires an argument. */
|
|
|
938 if (*nextchar != '\0')
|
|
|
939 {
|
|
|
940 optarg = nextchar;
|
|
|
941 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
942 we must advance to the next element now. */
|
|
|
943 optind++;
|
|
|
944 }
|
|
|
945 else if (optind == argc)
|
|
|
946 {
|
|
|
947 if (print_errors)
|
|
|
948 {
|
|
|
949 /* 1003.2 specifies the format of this message. */
|
|
|
950 fprintf (stderr,
|
|
|
951 _("%s: option requires an argument -- %c\n"),
|
|
|
952 argv[0], c);
|
|
|
953 }
|
|
|
954 optopt = c;
|
|
|
955 if (optstring[0] == ':')
|
|
|
956 c = ':';
|
|
|
957 else
|
|
|
958 c = '?';
|
|
|
959 }
|
|
|
960 else
|
|
|
961 /* We already incremented `optind' once;
|
|
|
962 increment it again when taking next ARGV-elt as argument. */
|
|
|
963 optarg = argv[optind++];
|
|
|
964 nextchar = NULL;
|
|
|
965 }
|
|
|
966 }
|
|
|
967 return c;
|
|
|
968 }
|
|
|
969 }
|
|
|
970
|
|
|
971 int
|
|
|
972 getopt (argc, argv, optstring)
|
|
|
973 int argc;
|
|
|
974 char *const *argv;
|
|
|
975 const char *optstring;
|
|
|
976 {
|
|
|
977 return _getopt_internal (argc, argv, optstring,
|
|
|
978 (const struct option *) 0,
|
|
|
979 (int32_t *) 0,
|
|
|
980 0);
|
|
|
981 }
|
|
|
982
|
|
|
983 int
|
|
|
984 getopt_long (argc, argv, options, long_options, opt_index)
|
|
|
985 int argc;
|
|
|
986 char *const *argv;
|
|
|
987 const char *options;
|
|
|
988 const struct option *long_options;
|
|
|
989 int32_t *opt_index;
|
|
|
990 {
|
|
|
991 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
|
|
|
992 }
|
|
|
993
|
|
|
994 #endif /* Not ELIDE_CODE. */
|
|
|
995
|
|
|
996 #ifdef TEST
|
|
|
997
|
|
|
998 /* Compile with -DTEST to make an executable for use in testing
|
|
|
999 the above definition of `getopt'. */
|
|
|
1000
|
|
|
1001 int
|
|
|
1002 main (argc, argv)
|
|
|
1003 int argc;
|
|
|
1004 char **argv;
|
|
|
1005 {
|
|
|
1006 int c;
|
|
|
1007 int digit_optind = 0;
|
|
|
1008
|
|
|
1009 while (1)
|
|
|
1010 {
|
|
|
1011 int this_option_optind = optind ? optind : 1;
|
|
|
1012
|
|
|
1013 c = getopt (argc, argv, "abc:d:0123456789");
|
|
|
1014 if (c == -1)
|
|
|
1015 break;
|
|
|
1016
|
|
|
1017 switch (c)
|
|
|
1018 {
|
|
|
1019 case '0':
|
|
|
1020 case '1':
|
|
|
1021 case '2':
|
|
|
1022 case '3':
|
|
|
1023 case '4':
|
|
|
1024 case '5':
|
|
|
1025 case '6':
|
|
|
1026 case '7':
|
|
|
1027 case '8':
|
|
|
1028 case '9':
|
|
|
1029 if (digit_optind != 0 && digit_optind != this_option_optind)
|
|
|
1030 printf ("digits occur in two different argv-elements.\n");
|
|
|
1031 digit_optind = this_option_optind;
|
|
|
1032 printf ("option %c\n", c);
|
|
|
1033 break;
|
|
|
1034
|
|
|
1035 case 'a':
|
|
|
1036 printf ("option a\n");
|
|
|
1037 break;
|
|
|
1038
|
|
|
1039 case 'b':
|
|
|
1040 printf ("option b\n");
|
|
|
1041 break;
|
|
|
1042
|
|
|
1043 case 'c':
|
|
|
1044 printf ("option c with value `%s'\n", optarg);
|
|
|
1045 break;
|
|
|
1046
|
|
|
1047 case '?':
|
|
|
1048 break;
|
|
|
1049
|
|
|
1050 default:
|
|
|
1051 printf ("?? getopt returned character code 0%o ??\n", c);
|
|
|
1052 }
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 if (optind < argc)
|
|
|
1056 {
|
|
|
1057 printf ("non-option ARGV-elements: ");
|
|
|
1058 while (optind < argc)
|
|
|
1059 printf ("%s ", argv[optind++]);
|
|
|
1060 printf ("\n");
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 exit (0);
|
|
|
1064 }
|
|
|
1065
|
|
|
1066 #endif /* TEST */
|
