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4378
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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.org |
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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 This file is part of the GNU C Library. Its master source is NOT part of |
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10 the C library, however. The master source lives in /gd/gnu/lib. |
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11 |
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12 The GNU C Library is free software; you can redistribute it and/or |
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13 modify it under the terms of the GNU Library General Public License as |
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14 published by the Free Software Foundation; either version 2 of the |
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15 License, or (at your option) any later version. |
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16 |
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17 The GNU C Library 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 GNU |
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20 Library 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 Library General Public |
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23 License along with the GNU C Library; see the file COPYING.LIB. If |
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24 not, write to the Free Software Foundation, Inc., 51 Franklin |
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25 Street, Fifth Floor, Boston, MA 02110-1301, USA. */ |
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4378
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26 |
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27 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. |
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28 Ditto for AIX 3.2 and <stdlib.h>. */ |
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29 #ifndef _NO_PROTO |
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30 #define _NO_PROTO |
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31 #endif |
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32 |
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33 #ifdef HAVE_CONFIG_H |
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34 #include <config.h> |
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35 #endif |
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36 |
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37 #if !defined (__STDC__) || !__STDC__ |
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38 /* This is a separate conditional since some stdc systems |
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39 reject `defined (const)'. */ |
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40 #ifndef const |
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41 #define const |
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42 #endif |
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43 #endif |
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44 |
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45 #include <stdio.h> |
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46 |
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47 /* Comment out all this code if we are using the GNU C Library, and are not |
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48 actually compiling the library itself. This code is part of the GNU C |
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49 Library, but also included in many other GNU distributions. Compiling |
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50 and linking in this code is a waste when using the GNU C library |
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51 (especially if it is a shared library). Rather than having every GNU |
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52 program understand `configure --with-gnu-libc' and omit the object files, |
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53 it is simpler to just do this in the source for each such file. */ |
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54 |
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55 #define GETOPT_INTERFACE_VERSION 2 |
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56 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2 |
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57 #include <gnu-versions.h> |
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58 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION |
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59 #define ELIDE_CODE |
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60 #endif |
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61 #endif |
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62 |
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63 #ifndef ELIDE_CODE |
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64 |
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65 |
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66 /* This needs to come after some library #include |
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67 to get __GNU_LIBRARY__ defined. */ |
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68 #ifdef __GNU_LIBRARY__ |
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69 /* Don't include stdlib.h for non-GNU C libraries because some of them |
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70 contain conflicting prototypes for getopt. */ |
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71 #include <stdlib.h> |
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72 #include <unistd.h> |
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73 #endif /* GNU C library. */ |
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74 |
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75 #ifdef VMS |
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76 #include <unixlib.h> |
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77 #if HAVE_STRING_H - 0 |
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78 #include <string.h> |
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79 #endif |
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80 #endif |
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81 |
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5621
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82 #if defined (WIN32) && !defined (__CYGWIN__) |
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4378
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83 /* It's not Unix, really. See? Capital letters. */ |
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84 #include <stdlib.h> |
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85 #include <windows.h> |
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86 #define getpid() GetCurrentProcessId() |
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87 #endif |
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88 |
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89 #ifndef _ |
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90 /* This is for other GNU distributions with internationalized messages. |
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91 When compiling libc, the _ macro is predefined. */ |
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92 #ifdef HAVE_LIBINTL_H |
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93 # include <libintl.h> |
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94 # define _(msgid) gettext (msgid) |
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95 #else |
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96 # define _(msgid) (msgid) |
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97 #endif |
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98 #endif |
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99 |
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100 /* This version of `getopt' appears to the caller like standard Unix `getopt' |
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101 but it behaves differently for the user, since it allows the user |
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102 to intersperse the options with the other arguments. |
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103 |
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104 As `getopt' works, it permutes the elements of ARGV so that, |
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105 when it is done, all the options precede everything else. Thus |
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106 all application programs are extended to handle flexible argument order. |
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107 |
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108 Setting the environment variable POSIXLY_CORRECT disables permutation. |
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109 Then the behavior is completely standard. |
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110 |
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111 GNU application programs can use a third alternative mode in which |
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112 they can distinguish the relative order of options and other arguments. */ |
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113 |
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114 #include "getopt.h" |
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115 |
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116 /* For communication from `getopt' to the caller. |
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117 When `getopt' finds an option that takes an argument, |
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118 the argument value is returned here. |
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119 Also, when `ordering' is RETURN_IN_ORDER, |
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120 each non-option ARGV-element is returned here. */ |
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121 |
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122 char *optarg = NULL; |
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123 |
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124 /* Index in ARGV of the next element to be scanned. |
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125 This is used for communication to and from the caller |
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126 and for communication between successive calls to `getopt'. |
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127 |
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128 On entry to `getopt', zero means this is the first call; initialize. |
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129 |
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130 When `getopt' returns -1, this is the index of the first of the |
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131 non-option elements that the caller should itself scan. |
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132 |
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133 Otherwise, `optind' communicates from one call to the next |
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134 how much of ARGV has been scanned so far. */ |
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135 |
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136 /* 1003.2 says this must be 1 before any call. */ |
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137 int optind = 1; |
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138 |
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139 /* Formerly, initialization of getopt depended on optind==0, which |
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140 causes problems with re-calling getopt as programs generally don't |
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141 know that. */ |
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142 |
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143 int __getopt_initialized = 0; |
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144 |
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145 /* The next char to be scanned in the option-element |
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146 in which the last option character we returned was found. |
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147 This allows us to pick up the scan where we left off. |
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148 |
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149 If this is zero, or a null string, it means resume the scan |
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150 by advancing to the next ARGV-element. */ |
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151 |
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152 static char *nextchar; |
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153 |
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154 /* Callers store zero here to inhibit the error message |
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155 for unrecognized options. */ |
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156 |
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157 int opterr = 1; |
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158 |
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159 /* Set to an option character which was unrecognized. |
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160 This must be initialized on some systems to avoid linking in the |
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161 system's own getopt implementation. */ |
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162 |
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163 int optopt = '?'; |
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164 |
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165 /* Describe how to deal with options that follow non-option ARGV-elements. |
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166 |
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167 If the caller did not specify anything, |
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168 the default is REQUIRE_ORDER if the environment variable |
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169 POSIXLY_CORRECT is defined, PERMUTE otherwise. |
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170 |
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171 REQUIRE_ORDER means don't recognize them as options; |
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172 stop option processing when the first non-option is seen. |
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173 This is what Unix does. |
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174 This mode of operation is selected by either setting the environment |
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175 variable POSIXLY_CORRECT, or using `+' as the first character |
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176 of the list of option characters. |
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177 |
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178 PERMUTE is the default. We permute the contents of ARGV as we scan, |
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179 so that eventually all the non-options are at the end. This allows options |
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180 to be given in any order, even with programs that were not written to |
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181 expect this. |
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182 |
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183 RETURN_IN_ORDER is an option available to programs that were written |
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184 to expect options and other ARGV-elements in any order and that care about |
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185 the ordering of the two. We describe each non-option ARGV-element |
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186 as if it were the argument of an option with character code 1. |
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187 Using `-' as the first character of the list of option characters |
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188 selects this mode of operation. |
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189 |
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190 The special argument `--' forces an end of option-scanning regardless |
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191 of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
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192 `--' can cause `getopt' to return -1 with `optind' != ARGC. */ |
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193 |
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194 static enum |
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195 { |
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196 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
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197 } ordering; |
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198 |
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199 /* Value of POSIXLY_CORRECT environment variable. */ |
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200 static char *posixly_correct; |
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201 |
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202 #if defined(__GNU_LIBRARY__) || defined(WIN32) |
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203 /* We want to avoid inclusion of string.h with non-GNU libraries |
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204 because there are many ways it can cause trouble. |
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205 On some systems, it contains special magic macros that don't work |
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206 in GCC. */ |
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207 #include <string.h> |
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208 #define my_index strchr |
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209 #else |
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210 |
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211 /* Avoid depending on library functions or files |
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212 whose names are inconsistent. */ |
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213 |
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214 char *getenv (); |
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215 |
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216 static char * |
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217 my_index (str, chr) |
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218 const char *str; |
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219 int chr; |
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220 { |
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221 while (*str) |
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222 { |
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223 if (*str == chr) |
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224 return (char *) str; |
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225 str++; |
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226 } |
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227 return 0; |
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228 } |
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229 |
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230 /* If using GCC, we can safely declare strlen this way. |
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231 If not using GCC, it is ok not to declare it. */ |
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232 #ifdef __GNUC__ |
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233 /* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h. |
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234 That was relevant to code that was here before. */ |
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235 #if !defined (__STDC__) || !__STDC__ |
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236 /* gcc with -traditional declares the built-in strlen to return int, |
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237 and has done so at least since version 2.4.5. -- rms. */ |
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238 extern int strlen (const char *); |
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239 #endif /* not __STDC__ */ |
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240 #endif /* __GNUC__ */ |
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241 |
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242 #endif /* not __GNU_LIBRARY__ */ |
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243 |
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244 /* Handle permutation of arguments. */ |
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245 |
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246 /* Describe the part of ARGV that contains non-options that have |
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247 been skipped. `first_nonopt' is the index in ARGV of the first of them; |
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248 `last_nonopt' is the index after the last of them. */ |
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249 |
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250 static int first_nonopt; |
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251 static int last_nonopt; |
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252 |
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253 #ifdef _LIBC |
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254 /* Bash 2.0 gives us an environment variable containing flags |
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255 indicating ARGV elements that should not be considered arguments. */ |
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256 |
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257 static const char *nonoption_flags; |
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258 static int nonoption_flags_len; |
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259 |
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260 static int original_argc; |
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261 static char *const *original_argv; |
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262 |
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263 /* Make sure the environment variable bash 2.0 puts in the environment |
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264 is valid for the getopt call we must make sure that the ARGV passed |
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265 to getopt is that one passed to the process. */ |
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266 static void store_args (int argc, char *const *argv) __attribute__ ((unused)); |
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267 static void |
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268 store_args (int argc, char *const *argv) |
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269 { |
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270 /* XXX This is no good solution. We should rather copy the args so |
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271 that we can compare them later. But we must not use malloc(3). */ |
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272 original_argc = argc; |
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273 original_argv = argv; |
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274 } |
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275 text_set_element (__libc_subinit, store_args); |
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276 #endif |
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277 |
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278 /* Exchange two adjacent subsequences of ARGV. |
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279 One subsequence is elements [first_nonopt,last_nonopt) |
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280 which contains all the non-options that have been skipped so far. |
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281 The other is elements [last_nonopt,optind), which contains all |
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282 the options processed since those non-options were skipped. |
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283 |
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284 `first_nonopt' and `last_nonopt' are relocated so that they describe |
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285 the new indices of the non-options in ARGV after they are moved. */ |
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286 |
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287 #if defined (__STDC__) && __STDC__ |
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288 static void exchange (char **); |
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289 #endif |
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290 |
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291 static void |
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292 exchange (argv) |
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293 char **argv; |
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294 { |
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295 int bottom = first_nonopt; |
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296 int middle = last_nonopt; |
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297 int top = optind; |
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298 char *tem; |
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299 |
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300 /* Exchange the shorter segment with the far end of the longer segment. |
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301 That puts the shorter segment into the right place. |
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302 It leaves the longer segment in the right place overall, |
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303 but it consists of two parts that need to be swapped next. */ |
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304 |
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305 while (top > middle && middle > bottom) |
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306 { |
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307 if (top - middle > middle - bottom) |
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308 { |
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309 /* Bottom segment is the short one. */ |
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310 int len = middle - bottom; |
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311 register int i; |
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312 |
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313 /* Swap it with the top part of the top segment. */ |
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314 for (i = 0; i < len; i++) |
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315 { |
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316 tem = argv[bottom + i]; |
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317 argv[bottom + i] = argv[top - (middle - bottom) + i]; |
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318 argv[top - (middle - bottom) + i] = tem; |
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319 } |
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320 /* Exclude the moved bottom segment from further swapping. */ |
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321 top -= len; |
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322 } |
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323 else |
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324 { |
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325 /* Top segment is the short one. */ |
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326 int len = top - middle; |
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327 register int i; |
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328 |
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329 /* Swap it with the bottom part of the bottom segment. */ |
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330 for (i = 0; i < len; i++) |
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331 { |
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332 tem = argv[bottom + i]; |
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333 argv[bottom + i] = argv[middle + i]; |
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334 argv[middle + i] = tem; |
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335 } |
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336 /* Exclude the moved top segment from further swapping. */ |
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337 bottom += len; |
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338 } |
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339 } |
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340 |
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341 /* Update records for the slots the non-options now occupy. */ |
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342 |
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343 first_nonopt += (optind - last_nonopt); |
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344 last_nonopt = optind; |
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345 } |
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346 |
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347 /* Initialize the internal data when the first call is made. */ |
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348 |
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349 #if defined (__STDC__) && __STDC__ |
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350 static const char *_getopt_initialize (int, char *const *, const char *); |
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351 #endif |
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352 static const char * |
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353 _getopt_initialize (argc, argv, optstring) |
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354 int argc; |
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355 char *const *argv; |
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356 const char *optstring; |
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357 { |
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358 /* Start processing options with ARGV-element 1 (since ARGV-element 0 |
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359 is the program name); the sequence of previously skipped |
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360 non-option ARGV-elements is empty. */ |
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361 |
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362 first_nonopt = last_nonopt = optind = 1; |
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363 |
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364 nextchar = NULL; |
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365 |
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366 posixly_correct = getenv ("POSIXLY_CORRECT"); |
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367 |
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368 /* Determine how to handle the ordering of options and nonoptions. */ |
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369 |
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370 if (optstring[0] == '-') |
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371 { |
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372 ordering = RETURN_IN_ORDER; |
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373 ++optstring; |
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374 } |
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375 else if (optstring[0] == '+') |
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376 { |
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377 ordering = REQUIRE_ORDER; |
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378 ++optstring; |
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379 } |
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380 else if (posixly_correct != NULL) |
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381 ordering = REQUIRE_ORDER; |
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382 else |
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383 ordering = PERMUTE; |
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384 |
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385 #ifdef _LIBC |
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386 if (posixly_correct == NULL |
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387 && argc == original_argc && argv == original_argv) |
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388 { |
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389 /* Bash 2.0 puts a special variable in the environment for each |
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390 command it runs, specifying which ARGV elements are the results of |
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391 file name wildcard expansion and therefore should not be |
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392 considered as options. */ |
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393 char var[100]; |
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394 sprintf (var, "_%d_GNU_nonoption_argv_flags_", getpid ()); |
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395 nonoption_flags = getenv (var); |
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396 if (nonoption_flags == NULL) |
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397 nonoption_flags_len = 0; |
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398 else |
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399 nonoption_flags_len = strlen (nonoption_flags); |
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400 } |
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401 else |
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402 nonoption_flags_len = 0; |
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403 #endif |
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404 |
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405 return optstring; |
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406 } |
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407 |
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408 /* Scan elements of ARGV (whose length is ARGC) for option characters |
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409 given in OPTSTRING. |
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410 |
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411 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
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412 then it is an option element. The characters of this element |
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413 (aside from the initial '-') are option characters. If `getopt' |
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414 is called repeatedly, it returns successively each of the option characters |
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415 from each of the option elements. |
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416 |
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417 If `getopt' finds another option character, it returns that character, |
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418 updating `optind' and `nextchar' so that the next call to `getopt' can |
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419 resume the scan with the following option character or ARGV-element. |
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420 |
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421 If there are no more option characters, `getopt' returns -1. |
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422 Then `optind' is the index in ARGV of the first ARGV-element |
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423 that is not an option. (The ARGV-elements have been permuted |
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424 so that those that are not options now come last.) |
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425 |
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426 OPTSTRING is a string containing the legitimate option characters. |
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427 If an option character is seen that is not listed in OPTSTRING, |
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428 return '?' after printing an error message. If you set `opterr' to |
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429 zero, the error message is suppressed but we still return '?'. |
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430 |
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431 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
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432 so the following text in the same ARGV-element, or the text of the following |
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433 ARGV-element, is returned in `optarg'. Two colons mean an option that |
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434 wants an optional arg; if there is text in the current ARGV-element, |
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435 it is returned in `optarg', otherwise `optarg' is set to zero. |
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436 |
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437 If OPTSTRING starts with `-' or `+', it requests different methods of |
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438 handling the non-option ARGV-elements. |
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439 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
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440 |
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441 Long-named options begin with `--' instead of `-'. |
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442 Their names may be abbreviated as long as the abbreviation is unique |
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443 or is an exact match for some defined option. If they have an |
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444 argument, it follows the option name in the same ARGV-element, separated |
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445 from the option name by a `=', or else the in next ARGV-element. |
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446 When `getopt' finds a long-named option, it returns 0 if that option's |
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447 `flag' field is nonzero, the value of the option's `val' field |
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448 if the `flag' field is zero. |
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449 |
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450 The elements of ARGV aren't really const, because we permute them. |
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451 But we pretend they're const in the prototype to be compatible |
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452 with other systems. |
|
|
453 |
|
|
454 LONGOPTS is a vector of `struct option' terminated by an |
|
|
455 element containing a name which is zero. |
|
|
456 |
|
|
457 LONGIND returns the index in LONGOPT of the long-named option found. |
|
|
458 It is only valid when a long-named option has been found by the most |
|
|
459 recent call. |
|
|
460 |
|
|
461 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
|
|
462 long-named options. */ |
|
|
463 |
|
|
464 int |
|
|
465 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
|
|
466 int argc; |
|
|
467 char *const *argv; |
|
|
468 const char *optstring; |
|
|
469 const struct option *longopts; |
|
|
470 int *longind; |
|
|
471 int long_only; |
|
|
472 { |
|
|
473 optarg = NULL; |
|
|
474 |
|
|
475 if (!__getopt_initialized || optind == 0) |
|
|
476 { |
|
|
477 optstring = _getopt_initialize (argc, argv, optstring); |
|
|
478 optind = 1; /* Don't scan ARGV[0], the program name. */ |
|
|
479 __getopt_initialized = 1; |
|
|
480 } |
|
|
481 |
|
|
482 /* Test whether ARGV[optind] points to a non-option argument. |
|
|
483 Either it does not have option syntax, or there is an environment flag |
|
|
484 from the shell indicating it is not an option. The later information |
|
|
485 is only used when the used in the GNU libc. */ |
|
|
486 #ifdef _LIBC |
|
|
487 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \ |
|
|
488 || (optind < nonoption_flags_len \ |
|
|
489 && nonoption_flags[optind] == '1')) |
|
|
490 #else |
|
|
491 #define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0') |
|
|
492 #endif |
|
|
493 |
|
|
494 if (nextchar == NULL || *nextchar == '\0') |
|
|
495 { |
|
|
496 /* Advance to the next ARGV-element. */ |
|
|
497 |
|
|
498 /* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been |
|
|
499 moved back by the user (who may also have changed the arguments). */ |
|
|
500 if (last_nonopt > optind) |
|
|
501 last_nonopt = optind; |
|
|
502 if (first_nonopt > optind) |
|
|
503 first_nonopt = optind; |
|
|
504 |
|
|
505 if (ordering == PERMUTE) |
|
|
506 { |
|
|
507 /* If we have just processed some options following some non-options, |
|
|
508 exchange them so that the options come first. */ |
|
|
509 |
|
|
510 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
|
511 exchange ((char **) argv); |
|
|
512 else if (last_nonopt != optind) |
|
|
513 first_nonopt = optind; |
|
|
514 |
|
|
515 /* Skip any additional non-options |
|
|
516 and extend the range of non-options previously skipped. */ |
|
|
517 |
|
|
518 while (optind < argc && NONOPTION_P) |
|
|
519 optind++; |
|
|
520 last_nonopt = optind; |
|
|
521 } |
|
|
522 |
|
|
523 /* The special ARGV-element `--' means premature end of options. |
|
|
524 Skip it like a null option, |
|
|
525 then exchange with previous non-options as if it were an option, |
|
|
526 then skip everything else like a non-option. */ |
|
|
527 |
|
|
528 if (optind != argc && !strcmp (argv[optind], "--")) |
|
|
529 { |
|
|
530 optind++; |
|
|
531 |
|
|
532 if (first_nonopt != last_nonopt && last_nonopt != optind) |
|
|
533 exchange ((char **) argv); |
|
|
534 else if (first_nonopt == last_nonopt) |
|
|
535 first_nonopt = optind; |
|
|
536 last_nonopt = argc; |
|
|
537 |
|
|
538 optind = argc; |
|
|
539 } |
|
|
540 |
|
|
541 /* If we have done all the ARGV-elements, stop the scan |
|
|
542 and back over any non-options that we skipped and permuted. */ |
|
|
543 |
|
|
544 if (optind == argc) |
|
|
545 { |
|
|
546 /* Set the next-arg-index to point at the non-options |
|
|
547 that we previously skipped, so the caller will digest them. */ |
|
|
548 if (first_nonopt != last_nonopt) |
|
|
549 optind = first_nonopt; |
|
|
550 return -1; |
|
|
551 } |
|
|
552 |
|
|
553 /* If we have come to a non-option and did not permute it, |
|
|
554 either stop the scan or describe it to the caller and pass it by. */ |
|
|
555 |
|
|
556 if (NONOPTION_P) |
|
|
557 { |
|
|
558 if (ordering == REQUIRE_ORDER) |
|
|
559 return -1; |
|
|
560 optarg = argv[optind++]; |
|
|
561 return 1; |
|
|
562 } |
|
|
563 |
|
|
564 /* We have found another option-ARGV-element. |
|
|
565 Skip the initial punctuation. */ |
|
|
566 |
|
|
567 nextchar = (argv[optind] + 1 |
|
|
568 + (longopts != NULL && argv[optind][1] == '-')); |
|
|
569 } |
|
|
570 |
|
|
571 /* Decode the current option-ARGV-element. */ |
|
|
572 |
|
|
573 /* Check whether the ARGV-element is a long option. |
|
|
574 |
|
|
575 If long_only and the ARGV-element has the form "-f", where f is |
|
|
576 a valid short option, don't consider it an abbreviated form of |
|
|
577 a long option that starts with f. Otherwise there would be no |
|
|
578 way to give the -f short option. |
|
|
579 |
|
|
580 On the other hand, if there's a long option "fubar" and |
|
|
581 the ARGV-element is "-fu", do consider that an abbreviation of |
|
|
582 the long option, just like "--fu", and not "-f" with arg "u". |
|
|
583 |
|
|
584 This distinction seems to be the most useful approach. */ |
|
|
585 |
|
|
586 if (longopts != NULL |
|
|
587 && (argv[optind][1] == '-' |
|
|
588 || (long_only && (argv[optind][2] || !my_index (optstring, argv[optind][1]))))) |
|
|
589 { |
|
|
590 char *nameend; |
|
|
591 const struct option *p; |
|
|
592 const struct option *pfound = NULL; |
|
|
593 int exact = 0; |
|
|
594 int ambig = 0; |
|
|
595 int indfound = -1; |
|
|
596 int option_index; |
|
|
597 |
|
|
598 for (nameend = nextchar; *nameend && *nameend != '='; nameend++) |
|
|
599 /* Do nothing. */ ; |
|
|
600 |
|
|
601 /* Test all long options for either exact match |
|
|
602 or abbreviated matches. */ |
|
|
603 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
|
|
604 if (!strncmp (p->name, nextchar, nameend - nextchar)) |
|
|
605 { |
|
|
606 if ((unsigned int) (nameend - nextchar) |
|
|
607 == (unsigned int) strlen (p->name)) |
|
|
608 { |
|
|
609 /* Exact match found. */ |
|
|
610 pfound = p; |
|
|
611 indfound = option_index; |
|
|
612 exact = 1; |
|
|
613 break; |
|
|
614 } |
|
|
615 else if (pfound == NULL) |
|
|
616 { |
|
|
617 /* First nonexact match found. */ |
|
|
618 pfound = p; |
|
|
619 indfound = option_index; |
|
|
620 } |
|
|
621 else |
|
|
622 /* Second or later nonexact match found. */ |
|
|
623 ambig = 1; |
|
|
624 } |
|
|
625 |
|
|
626 if (ambig && !exact) |
|
|
627 { |
|
|
628 if (opterr) |
|
|
629 fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
|
|
630 argv[0], argv[optind]); |
|
|
631 nextchar += strlen (nextchar); |
|
|
632 optind++; |
|
|
633 optopt = 0; |
|
|
634 return '?'; |
|
|
635 } |
|
|
636 |
|
|
637 if (pfound != NULL) |
|
|
638 { |
|
|
639 option_index = indfound; |
|
|
640 optind++; |
|
|
641 if (*nameend) |
|
|
642 { |
|
|
643 /* Don't test has_arg with >, because some C compilers don't |
|
|
644 allow it to be used on enums. */ |
|
|
645 if (pfound->has_arg) |
|
|
646 optarg = nameend + 1; |
|
|
647 else |
|
|
648 { |
|
|
649 if (opterr) |
|
|
650 if (argv[optind - 1][1] == '-') |
|
|
651 /* --option */ |
|
|
652 fprintf (stderr, |
|
|
653 _("%s: option `--%s' doesn't allow an argument\n"), |
|
|
654 argv[0], pfound->name); |
|
|
655 else |
|
|
656 /* +option or -option */ |
|
|
657 fprintf (stderr, |
|
|
658 _("%s: option `%c%s' doesn't allow an argument\n"), |
|
|
659 argv[0], argv[optind - 1][0], pfound->name); |
|
|
660 |
|
|
661 nextchar += strlen (nextchar); |
|
|
662 |
|
|
663 optopt = pfound->val; |
|
|
664 return '?'; |
|
|
665 } |
|
|
666 } |
|
|
667 else if (pfound->has_arg == 1) |
|
|
668 { |
|
|
669 if (optind < argc) |
|
|
670 optarg = argv[optind++]; |
|
|
671 else |
|
|
672 { |
|
|
673 if (opterr) |
|
|
674 fprintf (stderr, |
|
|
675 _("%s: option `%s' requires an argument\n"), |
|
|
676 argv[0], argv[optind - 1]); |
|
|
677 nextchar += strlen (nextchar); |
|
|
678 optopt = pfound->val; |
|
|
679 return optstring[0] == ':' ? ':' : '?'; |
|
|
680 } |
|
|
681 } |
|
|
682 nextchar += strlen (nextchar); |
|
|
683 if (longind != NULL) |
|
|
684 *longind = option_index; |
|
|
685 if (pfound->flag) |
|
|
686 { |
|
|
687 *(pfound->flag) = pfound->val; |
|
|
688 return 0; |
|
|
689 } |
|
|
690 return pfound->val; |
|
|
691 } |
|
|
692 |
|
|
693 /* Can't find it as a long option. If this is not getopt_long_only, |
|
|
694 or the option starts with '--' or is not a valid short |
|
|
695 option, then it's an error. |
|
|
696 Otherwise interpret it as a short option. */ |
|
|
697 if (!long_only || argv[optind][1] == '-' |
|
|
698 || my_index (optstring, *nextchar) == NULL) |
|
|
699 { |
|
|
700 if (opterr) |
|
|
701 { |
|
|
702 if (argv[optind][1] == '-') |
|
|
703 /* --option */ |
|
|
704 fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
|
|
705 argv[0], nextchar); |
|
|
706 else |
|
|
707 /* +option or -option */ |
|
|
708 fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
|
|
709 argv[0], argv[optind][0], nextchar); |
|
|
710 } |
|
|
711 nextchar = (char *) ""; |
|
|
712 optind++; |
|
|
713 optopt = 0; |
|
|
714 return '?'; |
|
|
715 } |
|
|
716 } |
|
|
717 |
|
|
718 /* Look at and handle the next short option-character. */ |
|
|
719 |
|
|
720 { |
|
|
721 char c = *nextchar++; |
|
|
722 char *temp = my_index (optstring, c); |
|
|
723 |
|
|
724 /* Increment `optind' when we start to process its last character. */ |
|
|
725 if (*nextchar == '\0') |
|
|
726 ++optind; |
|
|
727 |
|
|
728 if (temp == NULL || c == ':') |
|
|
729 { |
|
|
730 if (opterr) |
|
|
731 { |
|
|
732 if (posixly_correct) |
|
|
733 /* 1003.2 specifies the format of this message. */ |
|
|
734 fprintf (stderr, _("%s: illegal option -- %c\n"), |
|
|
735 argv[0], c); |
|
|
736 else |
|
|
737 fprintf (stderr, _("%s: invalid option -- %c\n"), |
|
|
738 argv[0], c); |
|
|
739 } |
|
|
740 optopt = c; |
|
|
741 return '?'; |
|
|
742 } |
|
|
743 /* Convenience. Treat POSIX -W foo same as long option --foo */ |
|
|
744 if (temp[0] == 'W' && temp[1] == ';') |
|
|
745 { |
|
|
746 char *nameend; |
|
|
747 const struct option *p; |
|
|
748 const struct option *pfound = NULL; |
|
|
749 int exact = 0; |
|
|
750 int ambig = 0; |
|
|
751 int indfound = 0; |
|
|
752 int option_index; |
|
|
753 |
|
|
754 /* This is an option that requires an argument. */ |
|
|
755 if (*nextchar != '\0') |
|
|
756 { |
|
|
757 optarg = nextchar; |
|
|
758 /* If we end this ARGV-element by taking the rest as an arg, |
|
|
759 we must advance to the next element now. */ |
|
|
760 optind++; |
|
|
761 } |
|
|
762 else if (optind == argc) |
|
|
763 { |
|
|
764 if (opterr) |
|
|
765 { |
|
|
766 /* 1003.2 specifies the format of this message. */ |
|
|
767 fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
|
|
768 argv[0], c); |
|
|
769 } |
|
|
770 optopt = c; |
|
|
771 if (optstring[0] == ':') |
|
|
772 c = ':'; |
|
|
773 else |
|
|
774 c = '?'; |
|
|
775 return c; |
|
|
776 } |
|
|
777 else |
|
|
778 /* We already incremented `optind' once; |
|
|
779 increment it again when taking next ARGV-elt as argument. */ |
|
|
780 optarg = argv[optind++]; |
|
|
781 |
|
|
782 /* optarg is now the argument, see if it's in the |
|
|
783 table of longopts. */ |
|
|
784 |
|
|
785 for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++) |
|
|
786 /* Do nothing. */ ; |
|
|
787 |
|
|
788 /* Test all long options for either exact match |
|
|
789 or abbreviated matches. */ |
|
|
790 for (p = longopts, option_index = 0; p->name; p++, option_index++) |
|
|
791 if (!strncmp (p->name, nextchar, nameend - nextchar)) |
|
|
792 { |
|
|
793 if ((unsigned int) (nameend - nextchar) == strlen (p->name)) |
|
|
794 { |
|
|
795 /* Exact match found. */ |
|
|
796 pfound = p; |
|
|
797 indfound = option_index; |
|
|
798 exact = 1; |
|
|
799 break; |
|
|
800 } |
|
|
801 else if (pfound == NULL) |
|
|
802 { |
|
|
803 /* First nonexact match found. */ |
|
|
804 pfound = p; |
|
|
805 indfound = option_index; |
|
|
806 } |
|
|
807 else |
|
|
808 /* Second or later nonexact match found. */ |
|
|
809 ambig = 1; |
|
|
810 } |
|
|
811 if (ambig && !exact) |
|
|
812 { |
|
|
813 if (opterr) |
|
|
814 fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
|
|
815 argv[0], argv[optind]); |
|
|
816 nextchar += strlen (nextchar); |
|
|
817 optind++; |
|
|
818 return '?'; |
|
|
819 } |
|
|
820 if (pfound != NULL) |
|
|
821 { |
|
|
822 option_index = indfound; |
|
|
823 if (*nameend) |
|
|
824 { |
|
|
825 /* Don't test has_arg with >, because some C compilers don't |
|
|
826 allow it to be used on enums. */ |
|
|
827 if (pfound->has_arg) |
|
|
828 optarg = nameend + 1; |
|
|
829 else |
|
|
830 { |
|
|
831 if (opterr) |
|
|
832 fprintf (stderr, _("\ |
|
|
833 %s: option `-W %s' doesn't allow an argument\n"), |
|
|
834 argv[0], pfound->name); |
|
|
835 |
|
|
836 nextchar += strlen (nextchar); |
|
|
837 return '?'; |
|
|
838 } |
|
|
839 } |
|
|
840 else if (pfound->has_arg == 1) |
|
|
841 { |
|
|
842 if (optind < argc) |
|
|
843 optarg = argv[optind++]; |
|
|
844 else |
|
|
845 { |
|
|
846 if (opterr) |
|
|
847 fprintf (stderr, |
|
|
848 _("%s: option `%s' requires an argument\n"), |
|
|
849 argv[0], argv[optind - 1]); |
|
|
850 nextchar += strlen (nextchar); |
|
|
851 return optstring[0] == ':' ? ':' : '?'; |
|
|
852 } |
|
|
853 } |
|
|
854 nextchar += strlen (nextchar); |
|
|
855 if (longind != NULL) |
|
|
856 *longind = option_index; |
|
|
857 if (pfound->flag) |
|
|
858 { |
|
|
859 *(pfound->flag) = pfound->val; |
|
|
860 return 0; |
|
|
861 } |
|
|
862 return pfound->val; |
|
|
863 } |
|
|
864 nextchar = NULL; |
|
|
865 return 'W'; /* Let the application handle it. */ |
|
|
866 } |
|
|
867 if (temp[1] == ':') |
|
|
868 { |
|
|
869 if (temp[2] == ':') |
|
|
870 { |
|
|
871 /* This is an option that accepts an argument optionally. */ |
|
|
872 if (*nextchar != '\0') |
|
|
873 { |
|
|
874 optarg = nextchar; |
|
|
875 optind++; |
|
|
876 } |
|
|
877 else |
|
|
878 optarg = NULL; |
|
|
879 nextchar = NULL; |
|
|
880 } |
|
|
881 else |
|
|
882 { |
|
|
883 /* This is an option that requires an argument. */ |
|
|
884 if (*nextchar != '\0') |
|
|
885 { |
|
|
886 optarg = nextchar; |
|
|
887 /* If we end this ARGV-element by taking the rest as an arg, |
|
|
888 we must advance to the next element now. */ |
|
|
889 optind++; |
|
|
890 } |
|
|
891 else if (optind == argc) |
|
|
892 { |
|
|
893 if (opterr) |
|
|
894 { |
|
|
895 /* 1003.2 specifies the format of this message. */ |
|
|
896 fprintf (stderr, |
|
|
897 _("%s: option requires an argument -- %c\n"), |
|
|
898 argv[0], c); |
|
|
899 } |
|
|
900 optopt = c; |
|
|
901 if (optstring[0] == ':') |
|
|
902 c = ':'; |
|
|
903 else |
|
|
904 c = '?'; |
|
|
905 } |
|
|
906 else |
|
|
907 /* We already incremented `optind' once; |
|
|
908 increment it again when taking next ARGV-elt as argument. */ |
|
|
909 optarg = argv[optind++]; |
|
|
910 nextchar = NULL; |
|
|
911 } |
|
|
912 } |
|
|
913 return c; |
|
|
914 } |
|
|
915 } |
|
|
916 |
|
|
917 int |
|
|
918 getopt (argc, argv, optstring) |
|
|
919 int argc; |
|
|
920 char *const *argv; |
|
|
921 const char *optstring; |
|
|
922 { |
|
|
923 return _getopt_internal (argc, argv, optstring, |
|
|
924 (const struct option *) 0, |
|
|
925 (int *) 0, |
|
|
926 0); |
|
|
927 } |
|
|
928 |
|
|
929 #endif /* Not ELIDE_CODE. */ |
|
|
930 |
|
|
931 #ifdef TEST |
|
|
932 |
|
|
933 /* Compile with -DTEST to make an executable for use in testing |
|
|
934 the above definition of `getopt'. */ |
|
|
935 |
|
|
936 int |
|
|
937 main (argc, argv) |
|
|
938 int argc; |
|
|
939 char **argv; |
|
|
940 { |
|
|
941 int c; |
|
|
942 int digit_optind = 0; |
|
|
943 |
|
|
944 while (1) |
|
|
945 { |
|
|
946 int this_option_optind = optind ? optind : 1; |
|
|
947 |
|
|
948 c = getopt (argc, argv, "abc:d:0123456789"); |
|
|
949 if (c == -1) |
|
|
950 break; |
|
|
951 |
|
|
952 switch (c) |
|
|
953 { |
|
|
954 case '0': |
|
|
955 case '1': |
|
|
956 case '2': |
|
|
957 case '3': |
|
|
958 case '4': |
|
|
959 case '5': |
|
|
960 case '6': |
|
|
961 case '7': |
|
|
962 case '8': |
|
|
963 case '9': |
|
|
964 if (digit_optind != 0 && digit_optind != this_option_optind) |
|
|
965 printf ("digits occur in two different argv-elements.\n"); |
|
|
966 digit_optind = this_option_optind; |
|
|
967 printf ("option %c\n", c); |
|
|
968 break; |
|
|
969 |
|
|
970 case 'a': |
|
|
971 printf ("option a\n"); |
|
|
972 break; |
|
|
973 |
|
|
974 case 'b': |
|
|
975 printf ("option b\n"); |
|
|
976 break; |
|
|
977 |
|
|
978 case 'c': |
|
|
979 printf ("option c with value `%s'\n", optarg); |
|
|
980 break; |
|
|
981 |
|
|
982 case '?': |
|
|
983 break; |
|
|
984 |
|
|
985 default: |
|
|
986 printf ("?? getopt returned character code 0%o ??\n", c); |
|
|
987 } |
|
|
988 } |
|
|
989 |
|
|
990 if (optind < argc) |
|
|
991 { |
|
|
992 printf ("non-option ARGV-elements: "); |
|
|
993 while (optind < argc) |
|
|
994 printf ("%s ", argv[optind++]); |
|
|
995 printf ("\n"); |
|
|
996 } |
|
|
997 |
|
|
998 exit (0); |
|
|
999 } |
|
|
1000 |
|
|
1001 #endif /* TEST */ |
