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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, 1993 |
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7 Free Software Foundation, Inc. |
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8 |
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9 This program is free software; you can redistribute it and/or modify it |
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10 under the terms of the GNU General Public License as published by the |
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11 Free Software Foundation; either version 2, or (at your option) any |
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12 later version. |
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13 |
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14 This program is distributed in the hope that it will be useful, |
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 GNU General Public License for more details. |
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18 |
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19 You should have received a copy of the GNU General Public License |
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20 along with this program; if not, write to the Free Software |
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21 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ |
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22 |
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23 #ifdef HAVE_CONFIG_H |
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24 /* We use <config.h> instead of "config.h" so that a compilation |
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25 using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h |
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26 (which it would do because getopt.c was found in $srcdir). */ |
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27 #include <config.h> |
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28 #endif |
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29 |
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30 #ifndef __STDC__ |
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31 /* This is a separate conditional since some stdc systems |
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32 reject `defined (const)'. */ |
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33 #ifndef const |
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34 #define const |
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35 #endif |
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36 #endif |
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37 |
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38 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */ |
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39 #ifndef _NO_PROTO |
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40 #define _NO_PROTO |
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41 #endif |
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42 |
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43 #include <stdio.h> |
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44 |
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45 /* Comment out all this code if we are using the GNU C Library, and are not |
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46 actually compiling the library itself. This code is part of the GNU C |
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47 Library, but also included in many other GNU distributions. Compiling |
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48 and linking in this code is a waste when using the GNU C library |
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49 (especially if it is a shared library). Rather than having every GNU |
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50 program understand `configure --with-gnu-libc' and omit the object files, |
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51 it is simpler to just do this in the source for each such file. */ |
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52 |
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53 #if defined (_LIBC) || !defined (__GNU_LIBRARY__) |
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54 |
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55 |
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56 /* This needs to come after some library #include |
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57 to get __GNU_LIBRARY__ defined. */ |
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58 #ifdef __GNU_LIBRARY__ |
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59 /* Don't include stdlib.h for non-GNU C libraries because some of them |
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60 contain conflicting prototypes for getopt. */ |
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61 #include <stdlib.h> |
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62 #endif /* GNU C library. */ |
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63 |
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64 /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a |
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65 long-named option. Because this is not POSIX.2 compliant, it is |
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66 being phased out. */ |
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67 /* #define GETOPT_COMPAT */ |
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68 |
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69 /* This version of `getopt' appears to the caller like standard Unix `getopt' |
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70 but it behaves differently for the user, since it allows the user |
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71 to intersperse the options with the other arguments. |
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72 |
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73 As `getopt' works, it permutes the elements of ARGV so that, |
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74 when it is done, all the options precede everything else. Thus |
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75 all application programs are extended to handle flexible argument order. |
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76 |
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77 Setting the environment variable POSIXLY_CORRECT disables permutation. |
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78 Then the behavior is completely standard. |
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79 |
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80 GNU application programs can use a third alternative mode in which |
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81 they can distinguish the relative order of options and other arguments. */ |
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82 |
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83 #include "getopt.h" |
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84 |
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85 /* For communication from `getopt' to the caller. |
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86 When `getopt' finds an option that takes an argument, |
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87 the argument value is returned here. |
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88 Also, when `ordering' is RETURN_IN_ORDER, |
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89 each non-option ARGV-element is returned here. */ |
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90 |
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91 char *optarg = 0; |
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92 |
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93 /* Index in ARGV of the next element to be scanned. |
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94 This is used for communication to and from the caller |
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95 and for communication between successive calls to `getopt'. |
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96 |
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97 On entry to `getopt', zero means this is the first call; initialize. |
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98 |
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99 When `getopt' returns EOF, this is the index of the first of the |
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100 non-option elements that the caller should itself scan. |
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101 |
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102 Otherwise, `optind' communicates from one call to the next |
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103 how much of ARGV has been scanned so far. */ |
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104 |
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105 /* XXX 1003.2 says this must be 1 before any call. */ |
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106 int optind = 0; |
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107 |
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108 /* The next char to be scanned in the option-element |
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109 in which the last option character we returned was found. |
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110 This allows us to pick up the scan where we left off. |
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111 |
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112 If this is zero, or a null string, it means resume the scan |
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113 by advancing to the next ARGV-element. */ |
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114 |
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115 static char *nextchar; |
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116 |
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117 /* Callers store zero here to inhibit the error message |
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118 for unrecognized options. */ |
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119 |
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120 int opterr = 1; |
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121 |
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122 /* Set to an option character which was unrecognized. |
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123 This must be initialized on some systems to avoid linking in the |
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124 system's own getopt implementation. */ |
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125 |
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126 int optopt = '?'; |
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127 |
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128 /* Describe how to deal with options that follow non-option ARGV-elements. |
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129 |
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130 If the caller did not specify anything, |
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131 the default is REQUIRE_ORDER if the environment variable |
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132 POSIXLY_CORRECT is defined, PERMUTE otherwise. |
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133 |
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134 REQUIRE_ORDER means don't recognize them as options; |
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135 stop option processing when the first non-option is seen. |
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136 This is what Unix does. |
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137 This mode of operation is selected by either setting the environment |
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138 variable POSIXLY_CORRECT, or using `+' as the first character |
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139 of the list of option characters. |
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140 |
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141 PERMUTE is the default. We permute the contents of ARGV as we scan, |
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142 so that eventually all the non-options are at the end. This allows options |
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143 to be given in any order, even with programs that were not written to |
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144 expect this. |
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145 |
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146 RETURN_IN_ORDER is an option available to programs that were written |
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147 to expect options and other ARGV-elements in any order and that care about |
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148 the ordering of the two. We describe each non-option ARGV-element |
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149 as if it were the argument of an option with character code 1. |
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150 Using `-' as the first character of the list of option characters |
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151 selects this mode of operation. |
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152 |
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153 The special argument `--' forces an end of option-scanning regardless |
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154 of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
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155 `--' can cause `getopt' to return EOF with `optind' != ARGC. */ |
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156 |
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157 static enum |
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158 { |
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159 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
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160 } ordering; |
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161 |
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162 #ifdef __GNU_LIBRARY__ |
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163 /* We want to avoid inclusion of string.h with non-GNU libraries |
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164 because there are many ways it can cause trouble. |
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165 On some systems, it contains special magic macros that don't work |
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166 in GCC. */ |
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167 #include <string.h> |
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168 #define my_index strchr |
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169 #else |
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170 |
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171 /* Avoid depending on library functions or files |
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172 whose names are inconsistent. */ |
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173 |
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174 char *getenv (); |
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175 |
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176 static char * |
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177 my_index (str, chr) |
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178 const char *str; |
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179 int chr; |
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180 { |
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181 while (*str) |
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182 { |
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183 if (*str == chr) |
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184 return (char *) str; |
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185 str++; |
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186 } |
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187 return 0; |
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188 } |
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189 |
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190 /* If using GCC, we can safely declare strlen this way. |
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191 If not using GCC, it is ok not to declare it. |
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192 (Supposedly there are some machines where it might get a warning, |
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193 but changing this conditional to __STDC__ is too risky.) */ |
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194 #ifdef __GNUC__ |
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195 #ifdef IN_GCC |
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196 #include "gstddef.h" |
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197 #else |
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198 #include <stddef.h> |
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199 #endif |
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200 extern size_t strlen (const char *); |
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201 #endif |
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202 |
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203 #endif /* GNU C library. */ |
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204 |
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205 /* Handle permutation of arguments. */ |
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206 |
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207 /* Describe the part of ARGV that contains non-options that have |
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208 been skipped. `first_nonopt' is the index in ARGV of the first of them; |
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209 `last_nonopt' is the index after the last of them. */ |
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210 |
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211 static int first_nonopt; |
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212 static int last_nonopt; |
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213 |
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214 /* Exchange two adjacent subsequences of ARGV. |
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215 One subsequence is elements [first_nonopt,last_nonopt) |
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216 which contains all the non-options that have been skipped so far. |
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217 The other is elements [last_nonopt,optind), which contains all |
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218 the options processed since those non-options were skipped. |
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219 |
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220 `first_nonopt' and `last_nonopt' are relocated so that they describe |
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221 the new indices of the non-options in ARGV after they are moved. */ |
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222 |
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223 static void |
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224 exchange (argv) |
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225 char **argv; |
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226 { |
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227 int bottom = first_nonopt; |
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228 int middle = last_nonopt; |
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229 int top = optind; |
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230 char *tem; |
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231 |
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232 /* Exchange the shorter segment with the far end of the longer segment. |
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233 That puts the shorter segment into the right place. |
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234 It leaves the longer segment in the right place overall, |
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235 but it consists of two parts that need to be swapped next. */ |
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236 |
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237 while (top > middle && middle > bottom) |
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238 { |
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239 if (top - middle > middle - bottom) |
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240 { |
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241 /* Bottom segment is the short one. */ |
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242 int len = middle - bottom; |
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243 register int i; |
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244 |
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245 /* Swap it with the top part of the top segment. */ |
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246 for (i = 0; i < len; i++) |
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247 { |
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248 tem = argv[bottom + i]; |
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249 argv[bottom + i] = argv[top - (middle - bottom) + i]; |
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250 argv[top - (middle - bottom) + i] = tem; |
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251 } |
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252 /* Exclude the moved bottom segment from further swapping. */ |
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253 top -= len; |
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254 } |
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255 else |
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256 { |
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257 /* Top segment is the short one. */ |
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258 int len = top - middle; |
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259 register int i; |
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260 |
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261 /* Swap it with the bottom part of the bottom segment. */ |
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262 for (i = 0; i < len; i++) |
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263 { |
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264 tem = argv[bottom + i]; |
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265 argv[bottom + i] = argv[middle + i]; |
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266 argv[middle + i] = tem; |
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267 } |
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268 /* Exclude the moved top segment from further swapping. */ |
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269 bottom += len; |
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270 } |
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271 } |
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272 |
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273 /* Update records for the slots the non-options now occupy. */ |
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274 |
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275 first_nonopt += (optind - last_nonopt); |
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276 last_nonopt = optind; |
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277 } |
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278 |
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279 /* Scan elements of ARGV (whose length is ARGC) for option characters |
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280 given in OPTSTRING. |
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281 |
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282 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
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283 then it is an option element. The characters of this element |
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284 (aside from the initial '-') are option characters. If `getopt' |
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285 is called repeatedly, it returns successively each of the option characters |
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286 from each of the option elements. |
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287 |
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288 If `getopt' finds another option character, it returns that character, |
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289 updating `optind' and `nextchar' so that the next call to `getopt' can |
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290 resume the scan with the following option character or ARGV-element. |
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291 |
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292 If there are no more option characters, `getopt' returns `EOF'. |
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293 Then `optind' is the index in ARGV of the first ARGV-element |
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294 that is not an option. (The ARGV-elements have been permuted |
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295 so that those that are not options now come last.) |
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296 |
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297 OPTSTRING is a string containing the legitimate option characters. |
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298 If an option character is seen that is not listed in OPTSTRING, |
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299 return '?' after printing an error message. If you set `opterr' to |
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300 zero, the error message is suppressed but we still return '?'. |
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301 |
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302 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
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303 so the following text in the same ARGV-element, or the text of the following |
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304 ARGV-element, is returned in `optarg'. Two colons mean an option that |
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305 wants an optional arg; if there is text in the current ARGV-element, |
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306 it is returned in `optarg', otherwise `optarg' is set to zero. |
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307 |
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308 If OPTSTRING starts with `-' or `+', it requests different methods of |
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309 handling the non-option ARGV-elements. |
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310 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
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311 |
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312 Long-named options begin with `--' instead of `-'. |
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313 Their names may be abbreviated as long as the abbreviation is unique |
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314 or is an exact match for some defined option. If they have an |
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315 argument, it follows the option name in the same ARGV-element, separated |
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316 from the option name by a `=', or else the in next ARGV-element. |
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317 When `getopt' finds a long-named option, it returns 0 if that option's |
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318 `flag' field is nonzero, the value of the option's `val' field |
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319 if the `flag' field is zero. |
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320 |
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321 The elements of ARGV aren't really const, because we permute them. |
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322 But we pretend they're const in the prototype to be compatible |
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323 with other systems. |
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324 |
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325 LONGOPTS is a vector of `struct option' terminated by an |
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326 element containing a name which is zero. |
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327 |
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328 LONGIND returns the index in LONGOPT of the long-named option found. |
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329 It is only valid when a long-named option has been found by the most |
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330 recent call. |
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331 |
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332 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
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333 long-named options. */ |
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334 |
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335 int |
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336 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
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337 int argc; |
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338 char *const *argv; |
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339 const char *optstring; |
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340 const struct option *longopts; |
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341 int *longind; |
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342 int long_only; |
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343 { |
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344 int option_index; |
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345 |
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346 optarg = 0; |
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347 |
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348 /* Initialize the internal data when the first call is made. |
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349 Start processing options with ARGV-element 1 (since ARGV-element 0 |
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350 is the program name); the sequence of previously skipped |
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351 non-option ARGV-elements is empty. */ |
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352 |
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353 if (optind == 0) |
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354 { |
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355 first_nonopt = last_nonopt = optind = 1; |
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356 |
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357 nextchar = NULL; |
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358 |
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359 /* Determine how to handle the ordering of options and nonoptions. */ |
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360 |
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361 if (optstring[0] == '-') |
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362 { |
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363 ordering = RETURN_IN_ORDER; |
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364 ++optstring; |
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365 } |
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366 else if (optstring[0] == '+') |
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367 { |
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368 ordering = REQUIRE_ORDER; |
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369 ++optstring; |
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370 } |
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371 else if (getenv ("POSIXLY_CORRECT") != NULL) |
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372 ordering = REQUIRE_ORDER; |
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373 else |
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374 ordering = PERMUTE; |
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375 } |
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376 |
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377 if (nextchar == NULL || *nextchar == '\0') |
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378 { |
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379 if (ordering == PERMUTE) |
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380 { |
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381 /* If we have just processed some options following some non-options, |
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382 exchange them so that the options come first. */ |
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383 |
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384 if (first_nonopt != last_nonopt && last_nonopt != optind) |
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385 exchange ((char **) argv); |
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386 else if (last_nonopt != optind) |
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387 first_nonopt = optind; |
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388 |
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389 /* Now skip any additional non-options |
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390 and extend the range of non-options previously skipped. */ |
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391 |
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392 while (optind < argc |
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393 && (argv[optind][0] != '-' || argv[optind][1] == '\0') |
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394 #ifdef GETOPT_COMPAT |
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395 && (longopts == NULL |
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396 || argv[optind][0] != '+' || argv[optind][1] == '\0') |
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397 #endif /* GETOPT_COMPAT */ |
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398 ) |
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399 optind++; |
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400 last_nonopt = optind; |
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401 } |
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402 |
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403 /* Special ARGV-element `--' means premature end of options. |
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404 Skip it like a null option, |
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405 then exchange with previous non-options as if it were an option, |
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406 then skip everything else like a non-option. */ |
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407 |
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408 if (optind != argc && !strcmp (argv[optind], "--")) |
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409 { |
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410 optind++; |
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411 |
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412 if (first_nonopt != last_nonopt && last_nonopt != optind) |
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413 exchange ((char **) argv); |
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414 else if (first_nonopt == last_nonopt) |
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415 first_nonopt = optind; |
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416 last_nonopt = argc; |
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417 |
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418 optind = argc; |
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419 } |
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420 |
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421 /* If we have done all the ARGV-elements, stop the scan |
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422 and back over any non-options that we skipped and permuted. */ |
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423 |
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424 if (optind == argc) |
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425 { |
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426 /* Set the next-arg-index to point at the non-options |
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427 that we previously skipped, so the caller will digest them. */ |
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428 if (first_nonopt != last_nonopt) |
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429 optind = first_nonopt; |
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430 return EOF; |
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431 } |
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432 |
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433 /* If we have come to a non-option and did not permute it, |
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434 either stop the scan or describe it to the caller and pass it by. */ |
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435 |
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436 if ((argv[optind][0] != '-' || argv[optind][1] == '\0') |
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437 #ifdef GETOPT_COMPAT |
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438 && (longopts == NULL |
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439 || argv[optind][0] != '+' || argv[optind][1] == '\0') |
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440 #endif /* GETOPT_COMPAT */ |
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441 ) |
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442 { |
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443 if (ordering == REQUIRE_ORDER) |
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444 return EOF; |
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445 optarg = argv[optind++]; |
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446 return 1; |
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447 } |
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448 |
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449 /* We have found another option-ARGV-element. |
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450 Start decoding its characters. */ |
|
|
451 |
|
|
452 nextchar = (argv[optind] + 1 |
|
|
453 + (longopts != NULL && argv[optind][1] == '-')); |
|
|
454 } |
|
|
455 |
|
|
456 if (longopts != NULL |
|
|
457 && ((argv[optind][0] == '-' |
|
|
458 && (argv[optind][1] == '-' || long_only)) |
|
|
459 #ifdef GETOPT_COMPAT |
|
|
460 || argv[optind][0] == '+' |
|
|
461 #endif /* GETOPT_COMPAT */ |
|
|
462 )) |
|
|
463 { |
|
|
464 const struct option *p; |
|
|
465 char *s = nextchar; |
|
|
466 int exact = 0; |
|
|
467 int ambig = 0; |
|
|
468 const struct option *pfound = NULL; |
|
|
469 int indfound; |
|
|
470 |
|
|
471 while (*s && *s != '=') |
|
|
472 s++; |
|
|
473 |
|
|
474 /* Test all options for either exact match or abbreviated matches. */ |
|
|
475 for (p = longopts, option_index = 0; p->name; |
|
|
476 p++, option_index++) |
|
|
477 if (!strncmp (p->name, nextchar, s - nextchar)) |
|
|
478 { |
|
|
479 if (s - nextchar == strlen (p->name)) |
|
|
480 { |
|
|
481 /* Exact match found. */ |
|
|
482 pfound = p; |
|
|
483 indfound = option_index; |
|
|
484 exact = 1; |
|
|
485 break; |
|
|
486 } |
|
|
487 else if (pfound == NULL) |
|
|
488 { |
|
|
489 /* First nonexact match found. */ |
|
|
490 pfound = p; |
|
|
491 indfound = option_index; |
|
|
492 } |
|
|
493 else |
|
|
494 /* Second nonexact match found. */ |
|
|
495 ambig = 1; |
|
|
496 } |
|
|
497 |
|
|
498 if (ambig && !exact) |
|
|
499 { |
|
|
500 if (opterr) |
|
|
501 fprintf (stderr, "%s: option `%s' is ambiguous\n", |
|
|
502 argv[0], argv[optind]); |
|
|
503 nextchar += strlen (nextchar); |
|
|
504 optind++; |
|
|
505 return '?'; |
|
|
506 } |
|
|
507 |
|
|
508 if (pfound != NULL) |
|
|
509 { |
|
|
510 option_index = indfound; |
|
|
511 optind++; |
|
|
512 if (*s) |
|
|
513 { |
|
|
514 /* Don't test has_arg with >, because some C compilers don't |
|
|
515 allow it to be used on enums. */ |
|
|
516 if (pfound->has_arg) |
|
|
517 optarg = s + 1; |
|
|
518 else |
|
|
519 { |
|
|
520 if (opterr) |
|
|
521 { |
|
|
522 if (argv[optind - 1][1] == '-') |
|
|
523 /* --option */ |
|
|
524 fprintf (stderr, |
|
|
525 "%s: option `--%s' doesn't allow an argument\n", |
|
|
526 argv[0], pfound->name); |
|
|
527 else |
|
|
528 /* +option or -option */ |
|
|
529 fprintf (stderr, |
|
|
530 "%s: option `%c%s' doesn't allow an argument\n", |
|
|
531 argv[0], argv[optind - 1][0], pfound->name); |
|
|
532 } |
|
|
533 nextchar += strlen (nextchar); |
|
|
534 return '?'; |
|
|
535 } |
|
|
536 } |
|
|
537 else if (pfound->has_arg == 1) |
|
|
538 { |
|
|
539 if (optind < argc) |
|
|
540 optarg = argv[optind++]; |
|
|
541 else |
|
|
542 { |
|
|
543 if (opterr) |
|
|
544 fprintf (stderr, "%s: option `%s' requires an argument\n", |
|
|
545 argv[0], argv[optind - 1]); |
|
|
546 nextchar += strlen (nextchar); |
|
99
|
547 return optstring[0] == ':' ? ':' : '?'; |
|
9
|
548 } |
|
|
549 } |
|
|
550 nextchar += strlen (nextchar); |
|
|
551 if (longind != NULL) |
|
|
552 *longind = option_index; |
|
|
553 if (pfound->flag) |
|
|
554 { |
|
|
555 *(pfound->flag) = pfound->val; |
|
|
556 return 0; |
|
|
557 } |
|
|
558 return pfound->val; |
|
|
559 } |
|
|
560 /* Can't find it as a long option. If this is not getopt_long_only, |
|
|
561 or the option starts with '--' or is not a valid short |
|
|
562 option, then it's an error. |
|
|
563 Otherwise interpret it as a short option. */ |
|
|
564 if (!long_only || argv[optind][1] == '-' |
|
|
565 #ifdef GETOPT_COMPAT |
|
|
566 || argv[optind][0] == '+' |
|
|
567 #endif /* GETOPT_COMPAT */ |
|
|
568 || my_index (optstring, *nextchar) == NULL) |
|
|
569 { |
|
|
570 if (opterr) |
|
|
571 { |
|
|
572 if (argv[optind][1] == '-') |
|
|
573 /* --option */ |
|
|
574 fprintf (stderr, "%s: unrecognized option `--%s'\n", |
|
|
575 argv[0], nextchar); |
|
|
576 else |
|
|
577 /* +option or -option */ |
|
|
578 fprintf (stderr, "%s: unrecognized option `%c%s'\n", |
|
|
579 argv[0], argv[optind][0], nextchar); |
|
|
580 } |
|
|
581 nextchar = (char *) ""; |
|
|
582 optind++; |
|
|
583 return '?'; |
|
|
584 } |
|
|
585 } |
|
|
586 |
|
|
587 /* Look at and handle the next option-character. */ |
|
|
588 |
|
|
589 { |
|
|
590 char c = *nextchar++; |
|
|
591 char *temp = my_index (optstring, c); |
|
|
592 |
|
|
593 /* Increment `optind' when we start to process its last character. */ |
|
|
594 if (*nextchar == '\0') |
|
|
595 ++optind; |
|
|
596 |
|
|
597 if (temp == NULL || c == ':') |
|
|
598 { |
|
|
599 if (opterr) |
|
|
600 { |
|
99
|
601 #if 0 |
|
9
|
602 if (c < 040 || c >= 0177) |
|
|
603 fprintf (stderr, "%s: unrecognized option, character code 0%o\n", |
|
|
604 argv[0], c); |
|
|
605 else |
|
|
606 fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c); |
|
99
|
607 #else |
|
|
608 /* 1003.2 specifies the format of this message. */ |
|
|
609 fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); |
|
|
610 #endif |
|
9
|
611 } |
|
99
|
612 optopt = c; |
|
9
|
613 return '?'; |
|
|
614 } |
|
|
615 if (temp[1] == ':') |
|
|
616 { |
|
|
617 if (temp[2] == ':') |
|
|
618 { |
|
|
619 /* This is an option that accepts an argument optionally. */ |
|
|
620 if (*nextchar != '\0') |
|
|
621 { |
|
|
622 optarg = nextchar; |
|
|
623 optind++; |
|
|
624 } |
|
|
625 else |
|
|
626 optarg = 0; |
|
|
627 nextchar = NULL; |
|
|
628 } |
|
|
629 else |
|
|
630 { |
|
|
631 /* This is an option that requires an argument. */ |
|
|
632 if (*nextchar != '\0') |
|
|
633 { |
|
|
634 optarg = nextchar; |
|
|
635 /* If we end this ARGV-element by taking the rest as an arg, |
|
|
636 we must advance to the next element now. */ |
|
|
637 optind++; |
|
|
638 } |
|
|
639 else if (optind == argc) |
|
|
640 { |
|
|
641 if (opterr) |
|
99
|
642 { |
|
|
643 #if 0 |
|
|
644 fprintf (stderr, "%s: option `-%c' requires an argument\n", |
|
|
645 argv[0], c); |
|
|
646 #else |
|
|
647 /* 1003.2 specifies the format of this message. */ |
|
|
648 fprintf (stderr, "%s: option requires an argument -- %c\n", |
|
|
649 argv[0], c); |
|
|
650 #endif |
|
|
651 } |
|
|
652 optopt = c; |
|
|
653 if (optstring[0] == ':') |
|
|
654 c = ':'; |
|
|
655 else |
|
|
656 c = '?'; |
|
9
|
657 } |
|
|
658 else |
|
|
659 /* We already incremented `optind' once; |
|
|
660 increment it again when taking next ARGV-elt as argument. */ |
|
|
661 optarg = argv[optind++]; |
|
|
662 nextchar = NULL; |
|
|
663 } |
|
|
664 } |
|
|
665 return c; |
|
|
666 } |
|
|
667 } |
|
|
668 |
|
|
669 int |
|
|
670 getopt (argc, argv, optstring) |
|
|
671 int argc; |
|
|
672 char *const *argv; |
|
|
673 const char *optstring; |
|
|
674 { |
|
|
675 return _getopt_internal (argc, argv, optstring, |
|
|
676 (const struct option *) 0, |
|
|
677 (int *) 0, |
|
|
678 0); |
|
|
679 } |
|
99
|
680 |
|
|
681 #endif /* _LIBC or not __GNU_LIBRARY__. */ |
|
9
|
682 |
|
|
683 #ifdef TEST |
|
|
684 |
|
|
685 /* Compile with -DTEST to make an executable for use in testing |
|
|
686 the above definition of `getopt'. */ |
|
|
687 |
|
|
688 int |
|
|
689 main (argc, argv) |
|
|
690 int argc; |
|
|
691 char **argv; |
|
|
692 { |
|
|
693 int c; |
|
|
694 int digit_optind = 0; |
|
|
695 |
|
|
696 while (1) |
|
|
697 { |
|
|
698 int this_option_optind = optind ? optind : 1; |
|
|
699 |
|
|
700 c = getopt (argc, argv, "abc:d:0123456789"); |
|
|
701 if (c == EOF) |
|
|
702 break; |
|
|
703 |
|
|
704 switch (c) |
|
|
705 { |
|
|
706 case '0': |
|
|
707 case '1': |
|
|
708 case '2': |
|
|
709 case '3': |
|
|
710 case '4': |
|
|
711 case '5': |
|
|
712 case '6': |
|
|
713 case '7': |
|
|
714 case '8': |
|
|
715 case '9': |
|
|
716 if (digit_optind != 0 && digit_optind != this_option_optind) |
|
|
717 printf ("digits occur in two different argv-elements.\n"); |
|
|
718 digit_optind = this_option_optind; |
|
|
719 printf ("option %c\n", c); |
|
|
720 break; |
|
|
721 |
|
|
722 case 'a': |
|
|
723 printf ("option a\n"); |
|
|
724 break; |
|
|
725 |
|
|
726 case 'b': |
|
|
727 printf ("option b\n"); |
|
|
728 break; |
|
|
729 |
|
|
730 case 'c': |
|
|
731 printf ("option c with value `%s'\n", optarg); |
|
|
732 break; |
|
|
733 |
|
|
734 case '?': |
|
|
735 break; |
|
|
736 |
|
|
737 default: |
|
|
738 printf ("?? getopt returned character code 0%o ??\n", c); |
|
|
739 } |
|
|
740 } |
|
|
741 |
|
|
742 if (optind < argc) |
|
|
743 { |
|
|
744 printf ("non-option ARGV-elements: "); |
|
|
745 while (optind < argc) |
|
|
746 printf ("%s ", argv[optind++]); |
|
|
747 printf ("\n"); |
|
|
748 } |
|
|
749 |
|
|
750 exit (0); |
|
|
751 } |
|
|
752 |
|
|
753 #endif /* TEST */ |
