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428
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1 /* Getopt for GNU.
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2 NOTE: getopt is now part of the C library, so if you don't know what
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3 "Keep this file name-space clean" means, talk to roland@gnu.ai.mit.edu
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4 before changing it!
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5
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6 Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97
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7 Free Software Foundation, Inc.
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8
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9 NOTE: The canonical source of this file is maintained with the GNU C Library.
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10 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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11
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12 This program is free software; you can redistribute it and/or modify it
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13 under the terms of the GNU General Public License as published by the
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14 Free Software Foundation; either version 2, or (at your option) any
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15 later version.
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16
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17 This program is distributed in the hope that it will be useful,
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18 but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 GNU General Public License for more details.
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21
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22 You should have received a copy of the GNU General Public License
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23 along with this program; if not, write to the Free Software
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24 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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25 USA. */
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26
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27 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
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28 Ditto for AIX 3.2 and <stdlib.h>. */
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29 #ifndef _NO_PROTO
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30 #define _NO_PROTO
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31 #endif
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32
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33 #ifdef HAVE_CONFIG_H
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438
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34 #include <config.h>
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428
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35 #endif
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36
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37 #include <stdio.h>
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38 #include <string.h>
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39 #include <stdlib.h>
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40
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41 /* Comment out all this code if we are using the GNU C Library, and are not
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42 actually compiling the library itself. This code is part of the GNU C
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43 Library, but also included in many other GNU distributions. Compiling
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44 and linking in this code is a waste when using the GNU C library
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45 (especially if it is a shared library). Rather than having every GNU
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46 program understand `configure --with-gnu-libc' and omit the object files,
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47 it is simpler to just do this in the source for each such file. */
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48
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49 #define GETOPT_INTERFACE_VERSION 2
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50 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
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51 #include <gnu-versions.h>
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52 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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53 #define ELIDE_CODE
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54 #endif
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55 #endif
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56
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57 #ifndef ELIDE_CODE
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58
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59
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60 /* This needs to come after some library #include
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61 to get __GNU_LIBRARY__ defined. */
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62 #ifdef __GNU_LIBRARY__
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63 /* Don't include stdlib.h for non-GNU C libraries because some of them
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64 contain conflicting prototypes for getopt. */
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65 #include <stdlib.h>
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66 #include <unistd.h>
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67 #endif /* GNU C library. */
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68
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69 #ifdef VMS
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70 #include <unixlib.h>
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71 #if HAVE_STRING_H - 0
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72 #include <string.h>
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73 #endif
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74 #endif
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75
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442
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76 #if defined (WIN32_NATIVE) && !defined (CYGWIN)
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428
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77 /* It's not Unix, really. See? Capital letters. */
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78 #include <windows.h>
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79 #undef getpid
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80 #define getpid() GetCurrentProcessId()
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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 #ifdef HAVE_LIBINTL_H
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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 static char *
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206 my_index (const char *str, int chr)
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207 {
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208 while (*str)
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209 {
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210 if (*str == chr)
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211 return (char *) str;
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212 str++;
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213 }
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214 return 0;
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215 }
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216
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217 /* If using GCC, we can safely declare strlen this way.
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218 If not using GCC, it is ok not to declare it. */
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219 #ifdef __GNUC__
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220 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
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221 That was relevant to code that was here before. */
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222 #if !defined (__STDC__) || !__STDC__
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223 /* gcc with -traditional declares the built-in strlen to return int,
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224 and has done so at least since version 2.4.5. -- rms. */
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225 extern int strlen (const char *);
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226 #endif /* not __STDC__ */
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227 #endif /* __GNUC__ */
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228
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229 #endif /* not __GNU_LIBRARY__ */
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230
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231 /* Handle permutation of arguments. */
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232
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233 /* Describe the part of ARGV that contains non-options that have
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234 been skipped. `first_nonopt' is the index in ARGV of the first of them;
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235 `last_nonopt' is the index after the last of them. */
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236
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237 static int first_nonopt;
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238 static int last_nonopt;
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239
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240 #ifdef _LIBC
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241 /* Bash 2.0 gives us an environment variable containing flags
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242 indicating ARGV elements that should not be considered arguments. */
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243
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244 /* Defined in getopt_init.c */
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245 extern char *__getopt_nonoption_flags;
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246
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247 static int nonoption_flags_max_len;
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248 static int nonoption_flags_len;
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249
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250 static int original_argc;
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251 static char *const *original_argv;
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252
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253 extern pid_t __libc_pid;
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254
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255 /* Make sure the environment variable bash 2.0 puts in the environment
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256 is valid for the getopt call we must make sure that the ARGV passed
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257 to getopt is that one passed to the process. */
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258 static void
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259 __attribute__ ((unused))
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260 store_args_and_env (int argc, char *const *argv)
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261 {
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262 /* XXX This is no good solution. We should rather copy the args so
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263 that we can compare them later. But we must not use malloc(3). */
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264 original_argc = argc;
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265 original_argv = argv;
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266 }
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267 text_set_element (__libc_subinit, store_args_and_env);
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268
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269 # define SWAP_FLAGS(ch1, ch2) \
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270 if (nonoption_flags_len > 0) \
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271 { \
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272 char __tmp = __getopt_nonoption_flags[ch1]; \
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273 __getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
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274 __getopt_nonoption_flags[ch2] = __tmp; \
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275 }
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276 #else /* !_LIBC */
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277 # define SWAP_FLAGS(ch1, ch2)
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278 #endif /* _LIBC */
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279
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280 /* Exchange two adjacent subsequences of ARGV.
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281 One subsequence is elements [first_nonopt,last_nonopt)
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282 which contains all the non-options that have been skipped so far.
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283 The other is elements [last_nonopt,optind), which contains all
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284 the options processed since those non-options were skipped.
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285
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286 `first_nonopt' and `last_nonopt' are relocated so that they describe
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287 the new indices of the non-options in ARGV after they are moved. */
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288
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289 #if defined (__STDC__) && __STDC__
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290 static void exchange (char **);
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291 #endif
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292
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293 static void
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294 exchange (char **argv)
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295 {
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296 int bottom = first_nonopt;
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297 int middle = last_nonopt;
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298 int top = optind;
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299 char *tem;
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300
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301 /* Exchange the shorter segment with the far end of the longer segment.
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302 That puts the shorter segment into the right place.
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303 It leaves the longer segment in the right place overall,
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304 but it consists of two parts that need to be swapped next. */
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305
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306 #ifdef _LIBC
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307 /* First make sure the handling of the `__getopt_nonoption_flags'
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308 string can work normally. Our top argument must be in the range
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309 of the string. */
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310 if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len)
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311 {
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312 /* We must extend the array. The user plays games with us and
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313 presents new arguments. */
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314 char *new_str = malloc (top + 1);
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315 if (new_str == NULL)
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316 nonoption_flags_len = nonoption_flags_max_len = 0;
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317 else
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318 {
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319 memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len);
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320 memset (&new_str[nonoption_flags_max_len], '\0',
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321 top + 1 - nonoption_flags_max_len);
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322 nonoption_flags_max_len = top + 1;
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323 __getopt_nonoption_flags = new_str;
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324 }
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325 }
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326 #endif
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327
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328 while (top > middle && middle > bottom)
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329 {
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330 if (top - middle > middle - bottom)
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331 {
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332 /* Bottom segment is the short one. */
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333 int len = middle - bottom;
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334 register int i;
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335
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336 /* Swap it with the top part of the top segment. */
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337 for (i = 0; i < len; i++)
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338 {
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339 tem = argv[bottom + i];
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340 argv[bottom + i] = argv[top - (middle - bottom) + i];
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341 argv[top - (middle - bottom) + i] = tem;
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342 SWAP_FLAGS (bottom + i, top - (middle - bottom) + i);
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343 }
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344 /* Exclude the moved bottom segment from further swapping. */
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345 top -= len;
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346 }
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347 else
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348 {
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349 /* Top segment is the short one. */
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350 int len = top - middle;
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351 register int i;
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352
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353 /* Swap it with the bottom part of the bottom segment. */
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354 for (i = 0; i < len; i++)
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355 {
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356 tem = argv[bottom + i];
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357 argv[bottom + i] = argv[middle + i];
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358 argv[middle + i] = tem;
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359 SWAP_FLAGS (bottom + i, middle + i);
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360 }
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361 /* Exclude the moved top segment from further swapping. */
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362 bottom += len;
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363 }
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364 }
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365
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366 /* Update records for the slots the non-options now occupy. */
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367
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368 first_nonopt += (optind - last_nonopt);
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369 last_nonopt = optind;
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370 }
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371
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372 /* Initialize the internal data when the first call is made. */
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373
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374 #if defined (__STDC__) && __STDC__
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375 static const char *_getopt_initialize (int, char *const *, const char *);
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376 #endif
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377 static const char *
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378 _getopt_initialize (int argc, char *const *argv, const char *optstring)
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379 {
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380 /* Start processing options with ARGV-element 1 (since ARGV-element 0
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381 is the program name); the sequence of previously skipped
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382 non-option ARGV-elements is empty. */
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383
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384 first_nonopt = last_nonopt = optind;
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385
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386 nextchar = NULL;
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387
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388 posixly_correct = getenv ("POSIXLY_CORRECT");
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389
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390 /* Determine how to handle the ordering of options and nonoptions. */
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391
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392 if (optstring[0] == '-')
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393 {
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394 ordering = RETURN_IN_ORDER;
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395 ++optstring;
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396 }
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397 else if (optstring[0] == '+')
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398 {
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399 ordering = REQUIRE_ORDER;
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400 ++optstring;
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401 }
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402 else if (posixly_correct != NULL)
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403 ordering = REQUIRE_ORDER;
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404 else
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405 ordering = PERMUTE;
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406
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407 #ifdef _LIBC
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408 if (posixly_correct == NULL
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|
|
409 && argc == original_argc && argv == original_argv)
|
|
|
410 {
|
|
|
411 if (nonoption_flags_max_len == 0)
|
|
|
412 {
|
|
|
413 if (__getopt_nonoption_flags == NULL
|
|
|
414 || __getopt_nonoption_flags[0] == '\0')
|
|
|
415 nonoption_flags_max_len = -1;
|
|
|
416 else
|
|
|
417 {
|
|
|
418 const char *orig_str = __getopt_nonoption_flags;
|
|
|
419 int len = nonoption_flags_max_len = strlen (orig_str);
|
|
|
420 if (nonoption_flags_max_len < argc)
|
|
|
421 nonoption_flags_max_len = argc;
|
|
|
422 __getopt_nonoption_flags =
|
|
|
423 (char *) malloc (nonoption_flags_max_len);
|
|
|
424 if (__getopt_nonoption_flags == NULL)
|
|
|
425 nonoption_flags_max_len = -1;
|
|
|
426 else
|
|
|
427 {
|
|
|
428 memcpy (__getopt_nonoption_flags, orig_str, len);
|
|
|
429 memset (&__getopt_nonoption_flags[len], '\0',
|
|
|
430 nonoption_flags_max_len - len);
|
|
|
431 }
|
|
|
432 }
|
|
|
433 }
|
|
|
434 nonoption_flags_len = nonoption_flags_max_len;
|
|
|
435 }
|
|
|
436 else
|
|
|
437 nonoption_flags_len = 0;
|
|
|
438 #endif
|
|
|
439
|
|
|
440 return optstring;
|
|
|
441 }
|
|
|
442
|
|
|
443 /* Scan elements of ARGV (whose length is ARGC) for option characters
|
|
|
444 given in OPTSTRING.
|
|
|
445
|
|
|
446 If an element of ARGV starts with '-', and is not exactly "-" or "--",
|
|
|
447 then it is an option element. The characters of this element
|
|
|
448 (aside from the initial '-') are option characters. If `getopt'
|
|
|
449 is called repeatedly, it returns successively each of the option characters
|
|
|
450 from each of the option elements.
|
|
|
451
|
|
|
452 If `getopt' finds another option character, it returns that character,
|
|
|
453 updating `optind' and `nextchar' so that the next call to `getopt' can
|
|
|
454 resume the scan with the following option character or ARGV-element.
|
|
|
455
|
|
|
456 If there are no more option characters, `getopt' returns -1.
|
|
|
457 Then `optind' is the index in ARGV of the first ARGV-element
|
|
|
458 that is not an option. (The ARGV-elements have been permuted
|
|
|
459 so that those that are not options now come last.)
|
|
|
460
|
|
|
461 OPTSTRING is a string containing the legitimate option characters.
|
|
|
462 If an option character is seen that is not listed in OPTSTRING,
|
|
|
463 return '?' after printing an error message. If you set `opterr' to
|
|
|
464 zero, the error message is suppressed but we still return '?'.
|
|
|
465
|
|
|
466 If a char in OPTSTRING is followed by a colon, that means it wants an arg,
|
|
|
467 so the following text in the same ARGV-element, or the text of the following
|
|
|
468 ARGV-element, is returned in `optarg'. Two colons mean an option that
|
|
|
469 wants an optional arg; if there is text in the current ARGV-element,
|
|
|
470 it is returned in `optarg', otherwise `optarg' is set to zero.
|
|
|
471
|
|
|
472 If OPTSTRING starts with `-' or `+', it requests different methods of
|
|
|
473 handling the non-option ARGV-elements.
|
|
|
474 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
|
|
|
475
|
|
|
476 Long-named options begin with `--' instead of `-'.
|
|
|
477 Their names may be abbreviated as long as the abbreviation is unique
|
|
|
478 or is an exact match for some defined option. If they have an
|
|
|
479 argument, it follows the option name in the same ARGV-element, separated
|
|
|
480 from the option name by a `=', or else the in next ARGV-element.
|
|
|
481 When `getopt' finds a long-named option, it returns 0 if that option's
|
|
|
482 `flag' field is nonzero, the value of the option's `val' field
|
|
|
483 if the `flag' field is zero.
|
|
|
484
|
|
|
485 The elements of ARGV aren't really const, because we permute them.
|
|
|
486 But we pretend they're const in the prototype to be compatible
|
|
|
487 with other systems.
|
|
|
488
|
|
|
489 LONGOPTS is a vector of `struct option' terminated by an
|
|
|
490 element containing a name which is zero.
|
|
|
491
|
|
|
492 LONGIND returns the index in LONGOPT of the long-named option found.
|
|
|
493 It is only valid when a long-named option has been found by the most
|
|
|
494 recent call.
|
|
|
495
|
|
|
496 If LONG_ONLY is nonzero, '-' as well as '--' can introduce
|
|
|
497 long-named options. */
|
|
|
498
|
|
|
499 int
|
|
|
500 _getopt_internal (int argc, char *const *argv, const char *optstring,
|
|
|
501 const struct option *longopts, int *longind, int long_only)
|
|
|
502 {
|
|
|
503 optarg = NULL;
|
|
|
504
|
|
|
505 if (optind == 0 || !__getopt_initialized)
|
|
|
506 {
|
|
|
507 if (optind == 0)
|
|
|
508 optind = 1; /* Don't scan ARGV[0], the program name. */
|
|
|
509 optstring = _getopt_initialize (argc, argv, optstring);
|
|
|
510 __getopt_initialized = 1;
|
|
|
511 }
|
|
|
512
|
|
|
513 /* Test whether ARGV[optind] points to a non-option argument.
|
|
|
514 Either it does not have option syntax, or there is an environment flag
|
|
|
515 from the shell indicating it is not an option. The later information
|
|
|
516 is only used when the used in the GNU libc. */
|
|
|
517 #ifdef _LIBC
|
|
|
518 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|
|
|
519 || (optind < nonoption_flags_len \
|
|
|
520 && __getopt_nonoption_flags[optind] == '1'))
|
|
|
521 #else
|
|
|
522 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
|
|
|
523 #endif
|
|
|
524
|
|
|
525 if (nextchar == NULL || *nextchar == '\0')
|
|
|
526 {
|
|
|
527 /* Advance to the next ARGV-element. */
|
|
|
528
|
|
|
529 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
|
|
|
530 moved back by the user (who may also have changed the arguments). */
|
|
|
531 if (last_nonopt > optind)
|
|
|
532 last_nonopt = optind;
|
|
|
533 if (first_nonopt > optind)
|
|
|
534 first_nonopt = optind;
|
|
|
535
|
|
|
536 if (ordering == PERMUTE)
|
|
|
537 {
|
|
|
538 /* If we have just processed some options following some non-options,
|
|
|
539 exchange them so that the options come first. */
|
|
|
540
|
|
|
541 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
542 exchange ((char **) argv);
|
|
|
543 else if (last_nonopt != optind)
|
|
|
544 first_nonopt = optind;
|
|
|
545
|
|
|
546 /* Skip any additional non-options
|
|
|
547 and extend the range of non-options previously skipped. */
|
|
|
548
|
|
|
549 while (optind < argc && NONOPTION_P)
|
|
|
550 optind++;
|
|
|
551 last_nonopt = optind;
|
|
|
552 }
|
|
|
553
|
|
|
554 /* The special ARGV-element `--' means premature end of options.
|
|
|
555 Skip it like a null option,
|
|
|
556 then exchange with previous non-options as if it were an option,
|
|
|
557 then skip everything else like a non-option. */
|
|
|
558
|
|
|
559 if (optind != argc && !strcmp (argv[optind], "--"))
|
|
|
560 {
|
|
|
561 optind++;
|
|
|
562
|
|
|
563 if (first_nonopt != last_nonopt && last_nonopt != optind)
|
|
|
564 exchange ((char **) argv);
|
|
|
565 else if (first_nonopt == last_nonopt)
|
|
|
566 first_nonopt = optind;
|
|
|
567 last_nonopt = argc;
|
|
|
568
|
|
|
569 optind = argc;
|
|
|
570 }
|
|
|
571
|
|
|
572 /* If we have done all the ARGV-elements, stop the scan
|
|
|
573 and back over any non-options that we skipped and permuted. */
|
|
|
574
|
|
|
575 if (optind == argc)
|
|
|
576 {
|
|
|
577 /* Set the next-arg-index to point at the non-options
|
|
|
578 that we previously skipped, so the caller will digest them. */
|
|
|
579 if (first_nonopt != last_nonopt)
|
|
|
580 optind = first_nonopt;
|
|
|
581 return -1;
|
|
|
582 }
|
|
|
583
|
|
|
584 /* If we have come to a non-option and did not permute it,
|
|
|
585 either stop the scan or describe it to the caller and pass it by. */
|
|
|
586
|
|
|
587 if (NONOPTION_P)
|
|
|
588 {
|
|
|
589 if (ordering == REQUIRE_ORDER)
|
|
|
590 return -1;
|
|
|
591 optarg = argv[optind++];
|
|
|
592 return 1;
|
|
|
593 }
|
|
|
594
|
|
|
595 /* We have found another option-ARGV-element.
|
|
|
596 Skip the initial punctuation. */
|
|
|
597
|
|
|
598 nextchar = (argv[optind] + 1
|
|
|
599 + (longopts != NULL && argv[optind][1] == '-'));
|
|
|
600 }
|
|
|
601
|
|
|
602 /* Decode the current option-ARGV-element. */
|
|
|
603
|
|
|
604 /* Check whether the ARGV-element is a long option.
|
|
|
605
|
|
|
606 If long_only and the ARGV-element has the form "-f", where f is
|
|
|
607 a valid short option, don't consider it an abbreviated form of
|
|
|
608 a long option that starts with f. Otherwise there would be no
|
|
|
609 way to give the -f short option.
|
|
|
610
|
|
|
611 On the other hand, if there's a long option "fubar" and
|
|
|
612 the ARGV-element is "-fu", do consider that an abbreviation of
|
|
|
613 the long option, just like "--fu", and not "-f" with arg "u".
|
|
|
614
|
|
|
615 This distinction seems to be the most useful approach. */
|
|
|
616
|
|
|
617 if (longopts != NULL
|
|
|
618 && (argv[optind][1] == '-'
|
|
|
619 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1])))))
|
|
|
620 {
|
|
|
621 char *nameend;
|
|
|
622 const struct option *p;
|
|
|
623 const struct option *pfound = NULL;
|
|
|
624 int exact = 0;
|
|
|
625 int ambig = 0;
|
|
|
626 int indfound = -1;
|
|
|
627 int option_index;
|
|
|
628
|
|
|
629 for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
|
|
|
630 /* Do nothing. */ ;
|
|
|
631
|
|
|
632 /* Test all long options for either exact match
|
|
|
633 or abbreviated matches. */
|
|
|
634 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
635 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
636 {
|
|
|
637 if ((unsigned int) (nameend - nextchar)
|
|
|
638 == (unsigned int) strlen (p->name))
|
|
|
639 {
|
|
|
640 /* Exact match found. */
|
|
|
641 pfound = p;
|
|
|
642 indfound = option_index;
|
|
|
643 exact = 1;
|
|
|
644 break;
|
|
|
645 }
|
|
|
646 else if (pfound == NULL)
|
|
|
647 {
|
|
|
648 /* First nonexact match found. */
|
|
|
649 pfound = p;
|
|
|
650 indfound = option_index;
|
|
|
651 }
|
|
|
652 else
|
|
|
653 /* Second or later nonexact match found. */
|
|
|
654 ambig = 1;
|
|
|
655 }
|
|
|
656
|
|
|
657 if (ambig && !exact)
|
|
|
658 {
|
|
|
659 if (opterr)
|
|
|
660 fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
|
|
|
661 argv[0], argv[optind]);
|
|
|
662 nextchar += strlen (nextchar);
|
|
|
663 optind++;
|
|
|
664 optopt = 0;
|
|
|
665 return '?';
|
|
|
666 }
|
|
|
667
|
|
|
668 if (pfound != NULL)
|
|
|
669 {
|
|
|
670 option_index = indfound;
|
|
|
671 optind++;
|
|
|
672 if (*nameend)
|
|
|
673 {
|
|
|
674 /* Don't test has_arg with >, because some C compilers don't
|
|
|
675 allow it to be used on enums. */
|
|
|
676 if (pfound->has_arg)
|
|
|
677 optarg = nameend + 1;
|
|
|
678 else
|
|
|
679 {
|
|
|
680 if (opterr) {
|
|
|
681 if (argv[optind - 1][1] == '-')
|
|
|
682 /* --option */
|
|
|
683 fprintf (stderr,
|
|
|
684 _("%s: option `--%s' doesn't allow an argument\n"),
|
|
|
685 argv[0], pfound->name);
|
|
|
686 else
|
|
|
687 /* +option or -option */
|
|
|
688 fprintf (stderr,
|
|
|
689 _("%s: option `%c%s' doesn't allow an argument\n"),
|
|
|
690 argv[0], argv[optind - 1][0], pfound->name);
|
|
|
691 }
|
|
|
692 nextchar += strlen (nextchar);
|
|
|
693
|
|
|
694 optopt = pfound->val;
|
|
|
695 return '?';
|
|
|
696 }
|
|
|
697 }
|
|
|
698 else if (pfound->has_arg == 1)
|
|
|
699 {
|
|
|
700 if (optind < argc)
|
|
|
701 optarg = argv[optind++];
|
|
|
702 else
|
|
|
703 {
|
|
|
704 if (opterr)
|
|
|
705 fprintf (stderr,
|
|
|
706 _("%s: option `%s' requires an argument\n"),
|
|
|
707 argv[0], argv[optind - 1]);
|
|
|
708 nextchar += strlen (nextchar);
|
|
|
709 optopt = pfound->val;
|
|
|
710 return optstring[0] == ':' ? ':' : '?';
|
|
|
711 }
|
|
|
712 }
|
|
|
713 nextchar += strlen (nextchar);
|
|
|
714 if (longind != NULL)
|
|
|
715 *longind = option_index;
|
|
|
716 if (pfound->flag)
|
|
|
717 {
|
|
|
718 *(pfound->flag) = pfound->val;
|
|
|
719 return 0;
|
|
|
720 }
|
|
|
721 return pfound->val;
|
|
|
722 }
|
|
|
723
|
|
|
724 /* Can't find it as a long option. If this is not getopt_long_only,
|
|
|
725 or the option starts with '--' or is not a valid short
|
|
|
726 option, then it's an error.
|
|
|
727 Otherwise interpret it as a short option. */
|
|
|
728 if (!long_only || argv[optind][1] == '-'
|
|
|
729 || my_index (optstring, *nextchar) == NULL)
|
|
|
730 {
|
|
|
731 if (opterr)
|
|
|
732 {
|
|
|
733 if (argv[optind][1] == '-')
|
|
|
734 /* --option */
|
|
|
735 fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
|
|
|
736 argv[0], nextchar);
|
|
|
737 else
|
|
|
738 /* +option or -option */
|
|
|
739 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
|
|
|
740 argv[0], argv[optind][0], nextchar);
|
|
|
741 }
|
|
|
742 nextchar = (char *) "";
|
|
|
743 optind++;
|
|
|
744 optopt = 0;
|
|
|
745 return '?';
|
|
|
746 }
|
|
|
747 }
|
|
|
748
|
|
|
749 /* Look at and handle the next short option-character. */
|
|
|
750
|
|
|
751 {
|
|
|
752 char c = *nextchar++;
|
|
|
753 char *temp = my_index (optstring, c);
|
|
|
754
|
|
|
755 /* Increment `optind' when we start to process its last character. */
|
|
|
756 if (*nextchar == '\0')
|
|
|
757 ++optind;
|
|
|
758
|
|
|
759 if (temp == NULL || c == ':')
|
|
|
760 {
|
|
|
761 if (opterr)
|
|
|
762 {
|
|
|
763 if (posixly_correct)
|
|
|
764 /* 1003.2 specifies the format of this message. */
|
|
|
765 fprintf (stderr, _("%s: illegal option -- %c\n"),
|
|
|
766 argv[0], c);
|
|
|
767 else
|
|
|
768 fprintf (stderr, _("%s: invalid option -- %c\n"),
|
|
|
769 argv[0], c);
|
|
|
770 }
|
|
|
771 optopt = c;
|
|
|
772 return '?';
|
|
|
773 }
|
|
|
774 /* Convenience. Treat POSIX -W foo same as long option --foo */
|
|
|
775 if (temp[0] == 'W' && temp[1] == ';')
|
|
|
776 {
|
|
|
777 char *nameend;
|
|
|
778 const struct option *p;
|
|
|
779 const struct option *pfound = NULL;
|
|
|
780 int exact = 0;
|
|
|
781 int ambig = 0;
|
|
|
782 int indfound = 0;
|
|
|
783 int option_index;
|
|
|
784
|
|
|
785 /* This is an option that requires an argument. */
|
|
|
786 if (*nextchar != '\0')
|
|
|
787 {
|
|
|
788 optarg = nextchar;
|
|
|
789 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
790 we must advance to the next element now. */
|
|
|
791 optind++;
|
|
|
792 }
|
|
|
793 else if (optind == argc)
|
|
|
794 {
|
|
|
795 if (opterr)
|
|
|
796 {
|
|
|
797 /* 1003.2 specifies the format of this message. */
|
|
|
798 fprintf (stderr, _("%s: option requires an argument -- %c\n"),
|
|
|
799 argv[0], c);
|
|
|
800 }
|
|
|
801 optopt = c;
|
|
|
802 if (optstring[0] == ':')
|
|
|
803 c = ':';
|
|
|
804 else
|
|
|
805 c = '?';
|
|
|
806 return c;
|
|
|
807 }
|
|
|
808 else
|
|
|
809 /* We already incremented `optind' once;
|
|
|
810 increment it again when taking next ARGV-elt as argument. */
|
|
|
811 optarg = argv[optind++];
|
|
|
812
|
|
|
813 /* optarg is now the argument, see if it's in the
|
|
|
814 table of longopts. */
|
|
|
815
|
|
|
816 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
|
|
|
817 /* Do nothing. */ ;
|
|
|
818
|
|
|
819 /* Test all long options for either exact match
|
|
|
820 or abbreviated matches. */
|
|
|
821 for (p = longopts, option_index = 0; p->name; p++, option_index++)
|
|
|
822 if (!strncmp (p->name, nextchar, nameend - nextchar))
|
|
|
823 {
|
|
|
824 if ((unsigned int) (nameend - nextchar) == strlen (p->name))
|
|
|
825 {
|
|
|
826 /* Exact match found. */
|
|
|
827 pfound = p;
|
|
|
828 indfound = option_index;
|
|
|
829 exact = 1;
|
|
|
830 break;
|
|
|
831 }
|
|
|
832 else if (pfound == NULL)
|
|
|
833 {
|
|
|
834 /* First nonexact match found. */
|
|
|
835 pfound = p;
|
|
|
836 indfound = option_index;
|
|
|
837 }
|
|
|
838 else
|
|
|
839 /* Second or later nonexact match found. */
|
|
|
840 ambig = 1;
|
|
|
841 }
|
|
|
842 if (ambig && !exact)
|
|
|
843 {
|
|
|
844 if (opterr)
|
|
|
845 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"),
|
|
|
846 argv[0], argv[optind]);
|
|
|
847 nextchar += strlen (nextchar);
|
|
|
848 optind++;
|
|
|
849 return '?';
|
|
|
850 }
|
|
|
851 if (pfound != NULL)
|
|
|
852 {
|
|
|
853 option_index = indfound;
|
|
|
854 if (*nameend)
|
|
|
855 {
|
|
|
856 /* Don't test has_arg with >, because some C compilers don't
|
|
|
857 allow it to be used on enums. */
|
|
|
858 if (pfound->has_arg)
|
|
|
859 optarg = nameend + 1;
|
|
|
860 else
|
|
|
861 {
|
|
|
862 if (opterr)
|
|
|
863 fprintf (stderr, _("\
|
|
|
864 %s: option `-W %s' doesn't allow an argument\n"),
|
|
|
865 argv[0], pfound->name);
|
|
|
866
|
|
|
867 nextchar += strlen (nextchar);
|
|
|
868 return '?';
|
|
|
869 }
|
|
|
870 }
|
|
|
871 else if (pfound->has_arg == 1)
|
|
|
872 {
|
|
|
873 if (optind < argc)
|
|
|
874 optarg = argv[optind++];
|
|
|
875 else
|
|
|
876 {
|
|
|
877 if (opterr)
|
|
|
878 fprintf (stderr,
|
|
|
879 _("%s: option `%s' requires an argument\n"),
|
|
|
880 argv[0], argv[optind - 1]);
|
|
|
881 nextchar += strlen (nextchar);
|
|
|
882 return optstring[0] == ':' ? ':' : '?';
|
|
|
883 }
|
|
|
884 }
|
|
|
885 nextchar += strlen (nextchar);
|
|
|
886 if (longind != NULL)
|
|
|
887 *longind = option_index;
|
|
|
888 if (pfound->flag)
|
|
|
889 {
|
|
|
890 *(pfound->flag) = pfound->val;
|
|
|
891 return 0;
|
|
|
892 }
|
|
|
893 return pfound->val;
|
|
|
894 }
|
|
|
895 nextchar = NULL;
|
|
|
896 return 'W'; /* Let the application handle it. */
|
|
|
897 }
|
|
|
898 if (temp[1] == ':')
|
|
|
899 {
|
|
|
900 if (temp[2] == ':')
|
|
|
901 {
|
|
|
902 /* This is an option that accepts an argument optionally. */
|
|
|
903 if (*nextchar != '\0')
|
|
|
904 {
|
|
|
905 optarg = nextchar;
|
|
|
906 optind++;
|
|
|
907 }
|
|
|
908 else
|
|
|
909 optarg = NULL;
|
|
|
910 nextchar = NULL;
|
|
|
911 }
|
|
|
912 else
|
|
|
913 {
|
|
|
914 /* This is an option that requires an argument. */
|
|
|
915 if (*nextchar != '\0')
|
|
|
916 {
|
|
|
917 optarg = nextchar;
|
|
|
918 /* If we end this ARGV-element by taking the rest as an arg,
|
|
|
919 we must advance to the next element now. */
|
|
|
920 optind++;
|
|
|
921 }
|
|
|
922 else if (optind == argc)
|
|
|
923 {
|
|
|
924 if (opterr)
|
|
|
925 {
|
|
|
926 /* 1003.2 specifies the format of this message. */
|
|
|
927 fprintf (stderr,
|
|
|
928 _("%s: option requires an argument -- %c\n"),
|
|
|
929 argv[0], c);
|
|
|
930 }
|
|
|
931 optopt = c;
|
|
|
932 if (optstring[0] == ':')
|
|
|
933 c = ':';
|
|
|
934 else
|
|
|
935 c = '?';
|
|
|
936 }
|
|
|
937 else
|
|
|
938 /* We already incremented `optind' once;
|
|
|
939 increment it again when taking next ARGV-elt as argument. */
|
|
|
940 optarg = argv[optind++];
|
|
|
941 nextchar = NULL;
|
|
|
942 }
|
|
|
943 }
|
|
|
944 return c;
|
|
|
945 }
|
|
|
946 }
|
|
|
947
|
|
|
948 int
|
|
|
949 getopt (int argc, char *const *argv, const char *optstring)
|
|
|
950 {
|
|
|
951 return _getopt_internal (argc, argv, optstring,
|
|
|
952 (const struct option *) 0,
|
|
|
953 (int *) 0,
|
|
|
954 0);
|
|
|
955 }
|
|
|
956
|
|
|
957 #endif /* Not ELIDE_CODE. */
|
|
|
958
|
|
|
959 #ifdef TEST
|
|
|
960
|
|
|
961 /* Compile with -DTEST to make an executable for use in testing
|
|
|
962 the above definition of `getopt'. */
|
|
|
963
|
|
|
964 int
|
|
|
965 main (int argc, char **argv)
|
|
|
966 {
|
|
|
967 int c;
|
|
|
968 int digit_optind = 0;
|
|
|
969
|
|
|
970 while (1)
|
|
|
971 {
|
|
|
972 int this_option_optind = optind ? optind : 1;
|
|
|
973
|
|
|
974 c = getopt (argc, argv, "abc:d:0123456789");
|
|
|
975 if (c == -1)
|
|
|
976 break;
|
|
|
977
|
|
|
978 switch (c)
|
|
|
979 {
|
|
|
980 case '0':
|
|
|
981 case '1':
|
|
|
982 case '2':
|
|
|
983 case '3':
|
|
|
984 case '4':
|
|
|
985 case '5':
|
|
|
986 case '6':
|
|
|
987 case '7':
|
|
|
988 case '8':
|
|
|
989 case '9':
|
|
|
990 if (digit_optind != 0 && digit_optind != this_option_optind)
|
|
|
991 printf ("digits occur in two different argv-elements.\n");
|
|
|
992 digit_optind = this_option_optind;
|
|
|
993 printf ("option %c\n", c);
|
|
|
994 break;
|
|
|
995
|
|
|
996 case 'a':
|
|
|
997 printf ("option a\n");
|
|
|
998 break;
|
|
|
999
|
|
|
1000 case 'b':
|
|
|
1001 printf ("option b\n");
|
|
|
1002 break;
|
|
|
1003
|
|
|
1004 case 'c':
|
|
|
1005 printf ("option c with value `%s'\n", optarg);
|
|
|
1006 break;
|
|
|
1007
|
|
|
1008 case '?':
|
|
|
1009 break;
|
|
|
1010
|
|
|
1011 default:
|
|
|
1012 printf ("?? getopt returned character code 0%o ??\n", c);
|
|
|
1013 }
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 if (optind < argc)
|
|
|
1017 {
|
|
|
1018 printf ("non-option ARGV-elements: ");
|
|
|
1019 while (optind < argc)
|
|
|
1020 printf ("%s ", argv[optind++]);
|
|
|
1021 printf ("\n");
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 exit (0);
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 #endif /* TEST */
|
