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141
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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 /* NOTE!!! AIX requires this to be the first thing in the file. |
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24 Do not put ANYTHING before it! */ |
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25 #if !defined (__GNUC__) && defined (_AIX) |
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26 #pragma alloca |
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27 #endif |
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28 |
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29 #ifdef HAVE_CONFIG_H |
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30 #include "config.h" |
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31 #endif |
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32 |
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33 #ifdef __GNUC__ |
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34 #define alloca __builtin_alloca |
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35 #else /* not __GNUC__ */ |
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36 #if defined (HAVE_ALLOCA_H) || (defined(sparc) && (defined(sun) || (!defined(USG) && !defined(SVR4) && !defined(__svr4__)))) |
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37 #include <alloca.h> |
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38 #else |
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39 #ifndef _AIX |
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40 char *alloca (); |
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41 #endif |
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42 #endif /* alloca.h */ |
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43 #endif /* not __GNUC__ */ |
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44 |
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45 #if !__STDC__ && !defined(const) && IN_GCC |
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46 #define const |
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47 #endif |
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48 |
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49 /* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>. */ |
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50 #ifndef _NO_PROTO |
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51 #define _NO_PROTO |
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52 #endif |
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53 |
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54 #include <stdio.h> |
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55 |
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56 /* Comment out all this code if we are using the GNU C Library, and are not |
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57 actually compiling the library itself. This code is part of the GNU C |
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58 Library, but also included in many other GNU distributions. Compiling |
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59 and linking in this code is a waste when using the GNU C library |
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60 (especially if it is a shared library). Rather than having every GNU |
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61 program understand `configure --with-gnu-libc' and omit the object files, |
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62 it is simpler to just do this in the source for each such file. */ |
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63 |
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64 #if defined (_LIBC) || !defined (__GNU_LIBRARY__) |
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65 |
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66 |
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67 /* This needs to come after some library #include |
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68 to get __GNU_LIBRARY__ defined. */ |
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69 #ifdef __GNU_LIBRARY__ |
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70 #undef alloca |
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71 /* Don't include stdlib.h for non-GNU C libraries because some of them |
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72 contain conflicting prototypes for getopt. */ |
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73 #include <stdlib.h> |
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74 #else /* Not GNU C library. */ |
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75 #define __alloca alloca |
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76 #endif /* GNU C library. */ |
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77 |
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78 /* If GETOPT_COMPAT is defined, `+' as well as `--' can introduce a |
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79 long-named option. Because this is not POSIX.2 compliant, it is |
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80 being phased out. */ |
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81 /* #define GETOPT_COMPAT */ |
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82 |
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83 /* This version of `getopt' appears to the caller like standard Unix `getopt' |
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84 but it behaves differently for the user, since it allows the user |
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85 to intersperse the options with the other arguments. |
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86 |
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87 As `getopt' works, it permutes the elements of ARGV so that, |
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88 when it is done, all the options precede everything else. Thus |
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89 all application programs are extended to handle flexible argument order. |
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90 |
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91 Setting the environment variable POSIXLY_CORRECT disables permutation. |
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92 Then the behavior is completely standard. |
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93 |
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94 GNU application programs can use a third alternative mode in which |
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95 they can distinguish the relative order of options and other arguments. */ |
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96 |
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97 #include "getopt.h" |
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98 |
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99 /* For communication from `getopt' to the caller. |
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100 When `getopt' finds an option that takes an argument, |
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101 the argument value is returned here. |
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102 Also, when `ordering' is RETURN_IN_ORDER, |
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103 each non-option ARGV-element is returned here. */ |
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104 |
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105 char *optarg = 0; |
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106 |
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107 /* Index in ARGV of the next element to be scanned. |
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108 This is used for communication to and from the caller |
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109 and for communication between successive calls to `getopt'. |
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110 |
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111 On entry to `getopt', zero means this is the first call; initialize. |
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112 |
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113 When `getopt' returns EOF, this is the index of the first of the |
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114 non-option elements that the caller should itself scan. |
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115 |
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116 Otherwise, `optind' communicates from one call to the next |
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117 how much of ARGV has been scanned so far. */ |
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118 |
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119 /* XXX 1003.2 says this must be 1 before any call. */ |
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120 int optind = 0; |
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121 |
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122 /* The next char to be scanned in the option-element |
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123 in which the last option character we returned was found. |
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124 This allows us to pick up the scan where we left off. |
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125 |
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126 If this is zero, or a null string, it means resume the scan |
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127 by advancing to the next ARGV-element. */ |
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128 |
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129 static char *nextchar; |
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130 |
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131 /* Callers store zero here to inhibit the error message |
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132 for unrecognized options. */ |
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133 |
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134 int opterr = 1; |
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135 |
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136 /* Set to an option character which was unrecognized. |
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137 This must be initialized on some systems to avoid linking in the |
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138 system's own getopt implementation. */ |
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139 |
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140 int optopt = '?'; |
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141 |
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142 /* Describe how to deal with options that follow non-option ARGV-elements. |
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143 |
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144 If the caller did not specify anything, |
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145 the default is REQUIRE_ORDER if the environment variable |
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146 POSIXLY_CORRECT is defined, PERMUTE otherwise. |
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147 |
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148 REQUIRE_ORDER means don't recognize them as options; |
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149 stop option processing when the first non-option is seen. |
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150 This is what Unix does. |
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151 This mode of operation is selected by either setting the environment |
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152 variable POSIXLY_CORRECT, or using `+' as the first character |
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153 of the list of option characters. |
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154 |
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155 PERMUTE is the default. We permute the contents of ARGV as we scan, |
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156 so that eventually all the non-options are at the end. This allows options |
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157 to be given in any order, even with programs that were not written to |
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158 expect this. |
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159 |
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160 RETURN_IN_ORDER is an option available to programs that were written |
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161 to expect options and other ARGV-elements in any order and that care about |
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162 the ordering of the two. We describe each non-option ARGV-element |
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163 as if it were the argument of an option with character code 1. |
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164 Using `-' as the first character of the list of option characters |
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165 selects this mode of operation. |
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166 |
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167 The special argument `--' forces an end of option-scanning regardless |
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168 of the value of `ordering'. In the case of RETURN_IN_ORDER, only |
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169 `--' can cause `getopt' to return EOF with `optind' != ARGC. */ |
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170 |
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171 static enum |
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172 { |
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173 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER |
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174 } ordering; |
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175 |
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176 #ifdef __GNU_LIBRARY__ |
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177 /* We want to avoid inclusion of string.h with non-GNU libraries |
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178 because there are many ways it can cause trouble. |
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179 On some systems, it contains special magic macros that don't work |
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180 in GCC. */ |
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181 #include <string.h> |
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182 #define my_index strchr |
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183 #define my_bcopy(src, dst, n) memcpy ((dst), (src), (n)) |
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184 #else |
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185 |
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186 /* Avoid depending on library functions or files |
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187 whose names are inconsistent. */ |
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188 |
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189 char *getenv (); |
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190 |
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191 static char * |
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192 my_index (str, chr) |
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193 const char *str; |
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194 int chr; |
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195 { |
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196 while (*str) |
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197 { |
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198 if (*str == chr) |
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199 return (char *) str; |
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200 str++; |
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201 } |
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202 return 0; |
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203 } |
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204 |
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205 static void |
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206 my_bcopy (from, to, size) |
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207 const char *from; |
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208 char *to; |
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209 int size; |
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210 { |
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211 int i; |
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212 for (i = 0; i < size; i++) |
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213 to[i] = from[i]; |
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214 } |
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215 #endif /* GNU C library. */ |
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216 |
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217 /* Handle permutation of arguments. */ |
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218 |
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219 /* Describe the part of ARGV that contains non-options that have |
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220 been skipped. `first_nonopt' is the index in ARGV of the first of them; |
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221 `last_nonopt' is the index after the last of them. */ |
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222 |
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223 static int first_nonopt; |
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224 static int last_nonopt; |
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225 |
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226 /* Exchange two adjacent subsequences of ARGV. |
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227 One subsequence is elements [first_nonopt,last_nonopt) |
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228 which contains all the non-options that have been skipped so far. |
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229 The other is elements [last_nonopt,optind), which contains all |
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230 the options processed since those non-options were skipped. |
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231 |
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232 `first_nonopt' and `last_nonopt' are relocated so that they describe |
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233 the new indices of the non-options in ARGV after they are moved. */ |
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234 |
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235 static void |
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236 exchange (argv) |
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237 char **argv; |
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238 { |
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239 int nonopts_size = (last_nonopt - first_nonopt) * sizeof (char *); |
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240 char **temp = (char **) __alloca (nonopts_size); |
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241 |
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242 /* Interchange the two blocks of data in ARGV. */ |
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243 |
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244 my_bcopy ((char *) &argv[first_nonopt], (char *) temp, nonopts_size); |
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245 my_bcopy ((char *) &argv[last_nonopt], (char *) &argv[first_nonopt], |
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246 (optind - last_nonopt) * sizeof (char *)); |
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247 my_bcopy ((char *) temp, |
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248 (char *) &argv[first_nonopt + optind - last_nonopt], |
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249 nonopts_size); |
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250 |
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251 /* Update records for the slots the non-options now occupy. */ |
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252 |
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253 first_nonopt += (optind - last_nonopt); |
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254 last_nonopt = optind; |
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255 } |
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256 |
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257 /* Scan elements of ARGV (whose length is ARGC) for option characters |
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258 given in OPTSTRING. |
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259 |
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260 If an element of ARGV starts with '-', and is not exactly "-" or "--", |
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261 then it is an option element. The characters of this element |
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262 (aside from the initial '-') are option characters. If `getopt' |
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263 is called repeatedly, it returns successively each of the option characters |
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264 from each of the option elements. |
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265 |
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266 If `getopt' finds another option character, it returns that character, |
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267 updating `optind' and `nextchar' so that the next call to `getopt' can |
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268 resume the scan with the following option character or ARGV-element. |
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269 |
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270 If there are no more option characters, `getopt' returns `EOF'. |
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271 Then `optind' is the index in ARGV of the first ARGV-element |
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272 that is not an option. (The ARGV-elements have been permuted |
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273 so that those that are not options now come last.) |
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274 |
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275 OPTSTRING is a string containing the legitimate option characters. |
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276 If an option character is seen that is not listed in OPTSTRING, |
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277 return '?' after printing an error message. If you set `opterr' to |
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278 zero, the error message is suppressed but we still return '?'. |
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279 |
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280 If a char in OPTSTRING is followed by a colon, that means it wants an arg, |
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281 so the following text in the same ARGV-element, or the text of the following |
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282 ARGV-element, is returned in `optarg'. Two colons mean an option that |
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283 wants an optional arg; if there is text in the current ARGV-element, |
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284 it is returned in `optarg', otherwise `optarg' is set to zero. |
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285 |
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286 If OPTSTRING starts with `-' or `+', it requests different methods of |
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287 handling the non-option ARGV-elements. |
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288 See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above. |
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289 |
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290 Long-named options begin with `--' instead of `-'. |
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291 Their names may be abbreviated as long as the abbreviation is unique |
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292 or is an exact match for some defined option. If they have an |
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293 argument, it follows the option name in the same ARGV-element, separated |
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294 from the option name by a `=', or else the in next ARGV-element. |
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295 When `getopt' finds a long-named option, it returns 0 if that option's |
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296 `flag' field is nonzero, the value of the option's `val' field |
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297 if the `flag' field is zero. |
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298 |
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299 The elements of ARGV aren't really const, because we permute them. |
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300 But we pretend they're const in the prototype to be compatible |
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301 with other systems. |
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302 |
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303 LONGOPTS is a vector of `struct option' terminated by an |
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304 element containing a name which is zero. |
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305 |
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306 LONGIND returns the index in LONGOPT of the long-named option found. |
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307 It is only valid when a long-named option has been found by the most |
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308 recent call. |
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309 |
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310 If LONG_ONLY is nonzero, '-' as well as '--' can introduce |
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311 long-named options. */ |
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312 |
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313 int |
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314 _getopt_internal (argc, argv, optstring, longopts, longind, long_only) |
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315 int argc; |
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316 char *const *argv; |
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317 const char *optstring; |
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318 const struct option *longopts; |
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319 int *longind; |
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320 int long_only; |
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321 { |
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322 int option_index; |
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323 |
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324 optarg = 0; |
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325 |
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326 /* Initialize the internal data when the first call is made. |
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327 Start processing options with ARGV-element 1 (since ARGV-element 0 |
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328 is the program name); the sequence of previously skipped |
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329 non-option ARGV-elements is empty. */ |
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330 |
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331 if (optind == 0) |
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332 { |
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333 first_nonopt = last_nonopt = optind = 1; |
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334 |
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335 nextchar = NULL; |
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336 |
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337 /* Determine how to handle the ordering of options and nonoptions. */ |
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338 |
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339 if (optstring[0] == '-') |
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340 { |
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341 ordering = RETURN_IN_ORDER; |
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342 ++optstring; |
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343 } |
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344 else if (optstring[0] == '+') |
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345 { |
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346 ordering = REQUIRE_ORDER; |
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347 ++optstring; |
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348 } |
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349 else if (getenv ("POSIXLY_CORRECT") != NULL) |
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350 ordering = REQUIRE_ORDER; |
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351 else |
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352 ordering = PERMUTE; |
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353 } |
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354 |
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355 if (nextchar == NULL || *nextchar == '\0') |
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356 { |
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357 if (ordering == PERMUTE) |
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358 { |
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359 /* If we have just processed some options following some non-options, |
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360 exchange them so that the options come first. */ |
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361 |
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362 if (first_nonopt != last_nonopt && last_nonopt != optind) |
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363 exchange ((char **) argv); |
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364 else if (last_nonopt != optind) |
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365 first_nonopt = optind; |
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366 |
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367 /* Now skip any additional non-options |
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368 and extend the range of non-options previously skipped. */ |
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369 |
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370 while (optind < argc |
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371 && (argv[optind][0] != '-' || argv[optind][1] == '\0') |
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372 #ifdef GETOPT_COMPAT |
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373 && (longopts == NULL |
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374 || argv[optind][0] != '+' || argv[optind][1] == '\0') |
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375 #endif /* GETOPT_COMPAT */ |
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376 ) |
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377 optind++; |
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378 last_nonopt = optind; |
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379 } |
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380 |
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381 /* Special ARGV-element `--' means premature end of options. |
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382 Skip it like a null option, |
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383 then exchange with previous non-options as if it were an option, |
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384 then skip everything else like a non-option. */ |
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385 |
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386 if (optind != argc && !strcmp (argv[optind], "--")) |
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387 { |
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388 optind++; |
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389 |
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390 if (first_nonopt != last_nonopt && last_nonopt != optind) |
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391 exchange ((char **) argv); |
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392 else if (first_nonopt == last_nonopt) |
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393 first_nonopt = optind; |
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394 last_nonopt = argc; |
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395 |
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396 optind = argc; |
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397 } |
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398 |
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399 /* If we have done all the ARGV-elements, stop the scan |
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400 and back over any non-options that we skipped and permuted. */ |
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401 |
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402 if (optind == argc) |
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403 { |
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404 /* Set the next-arg-index to point at the non-options |
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405 that we previously skipped, so the caller will digest them. */ |
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406 if (first_nonopt != last_nonopt) |
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407 optind = first_nonopt; |
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408 return EOF; |
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409 } |
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410 |
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411 /* If we have come to a non-option and did not permute it, |
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412 either stop the scan or describe it to the caller and pass it by. */ |
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413 |
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414 if ((argv[optind][0] != '-' || argv[optind][1] == '\0') |
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415 #ifdef GETOPT_COMPAT |
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416 && (longopts == NULL |
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417 || argv[optind][0] != '+' || argv[optind][1] == '\0') |
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418 #endif /* GETOPT_COMPAT */ |
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419 ) |
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420 { |
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421 if (ordering == REQUIRE_ORDER) |
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422 return EOF; |
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423 optarg = argv[optind++]; |
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424 return 1; |
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425 } |
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426 |
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427 /* We have found another option-ARGV-element. |
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428 Start decoding its characters. */ |
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429 |
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430 nextchar = (argv[optind] + 1 |
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431 + (longopts != NULL && argv[optind][1] == '-')); |
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432 } |
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433 |
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434 if (longopts != NULL |
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435 && ((argv[optind][0] == '-' |
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436 && (argv[optind][1] == '-' || long_only)) |
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437 #ifdef GETOPT_COMPAT |
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438 || argv[optind][0] == '+' |
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439 #endif /* GETOPT_COMPAT */ |
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440 )) |
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441 { |
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442 const struct option *p; |
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443 char *s = nextchar; |
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444 int exact = 0; |
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445 int ambig = 0; |
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446 const struct option *pfound = NULL; |
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447 int indfound; |
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448 |
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449 while (*s && *s != '=') |
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450 s++; |
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451 |
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452 /* Test all options for either exact match or abbreviated matches. */ |
|
|
453 for (p = longopts, option_index = 0; p->name; |
|
|
454 p++, option_index++) |
|
|
455 if (!strncmp (p->name, nextchar, s - nextchar)) |
|
|
456 { |
|
|
457 if (s - nextchar == strlen (p->name)) |
|
|
458 { |
|
|
459 /* Exact match found. */ |
|
|
460 pfound = p; |
|
|
461 indfound = option_index; |
|
|
462 exact = 1; |
|
|
463 break; |
|
|
464 } |
|
|
465 else if (pfound == NULL) |
|
|
466 { |
|
|
467 /* First nonexact match found. */ |
|
|
468 pfound = p; |
|
|
469 indfound = option_index; |
|
|
470 } |
|
|
471 else |
|
|
472 /* Second nonexact match found. */ |
|
|
473 ambig = 1; |
|
|
474 } |
|
|
475 |
|
|
476 if (ambig && !exact) |
|
|
477 { |
|
|
478 if (opterr) |
|
|
479 fprintf (stderr, "%s: option `%s' is ambiguous\n", |
|
|
480 argv[0], argv[optind]); |
|
|
481 nextchar += strlen (nextchar); |
|
|
482 optind++; |
|
|
483 return '?'; |
|
|
484 } |
|
|
485 |
|
|
486 if (pfound != NULL) |
|
|
487 { |
|
|
488 option_index = indfound; |
|
|
489 optind++; |
|
|
490 if (*s) |
|
|
491 { |
|
|
492 /* Don't test has_arg with >, because some C compilers don't |
|
|
493 allow it to be used on enums. */ |
|
|
494 if (pfound->has_arg) |
|
|
495 optarg = s + 1; |
|
|
496 else |
|
|
497 { |
|
|
498 if (opterr) |
|
|
499 { |
|
|
500 if (argv[optind - 1][1] == '-') |
|
|
501 /* --option */ |
|
|
502 fprintf (stderr, |
|
|
503 "%s: option `--%s' doesn't allow an argument\n", |
|
|
504 argv[0], pfound->name); |
|
|
505 else |
|
|
506 /* +option or -option */ |
|
|
507 fprintf (stderr, |
|
|
508 "%s: option `%c%s' doesn't allow an argument\n", |
|
|
509 argv[0], argv[optind - 1][0], pfound->name); |
|
|
510 } |
|
|
511 nextchar += strlen (nextchar); |
|
|
512 return '?'; |
|
|
513 } |
|
|
514 } |
|
|
515 else if (pfound->has_arg == 1) |
|
|
516 { |
|
|
517 if (optind < argc) |
|
|
518 optarg = argv[optind++]; |
|
|
519 else |
|
|
520 { |
|
|
521 if (opterr) |
|
|
522 fprintf (stderr, "%s: option `%s' requires an argument\n", |
|
|
523 argv[0], argv[optind - 1]); |
|
|
524 nextchar += strlen (nextchar); |
|
|
525 return optstring[0] == ':' ? ':' : '?'; |
|
|
526 } |
|
|
527 } |
|
|
528 nextchar += strlen (nextchar); |
|
|
529 if (longind != NULL) |
|
|
530 *longind = option_index; |
|
|
531 if (pfound->flag) |
|
|
532 { |
|
|
533 *(pfound->flag) = pfound->val; |
|
|
534 return 0; |
|
|
535 } |
|
|
536 return pfound->val; |
|
|
537 } |
|
|
538 /* Can't find it as a long option. If this is not getopt_long_only, |
|
|
539 or the option starts with '--' or is not a valid short |
|
|
540 option, then it's an error. |
|
|
541 Otherwise interpret it as a short option. */ |
|
|
542 if (!long_only || argv[optind][1] == '-' |
|
|
543 #ifdef GETOPT_COMPAT |
|
|
544 || argv[optind][0] == '+' |
|
|
545 #endif /* GETOPT_COMPAT */ |
|
|
546 || my_index (optstring, *nextchar) == NULL) |
|
|
547 { |
|
|
548 if (opterr) |
|
|
549 { |
|
|
550 if (argv[optind][1] == '-') |
|
|
551 /* --option */ |
|
|
552 fprintf (stderr, "%s: unrecognized option `--%s'\n", |
|
|
553 argv[0], nextchar); |
|
|
554 else |
|
|
555 /* +option or -option */ |
|
|
556 fprintf (stderr, "%s: unrecognized option `%c%s'\n", |
|
|
557 argv[0], argv[optind][0], nextchar); |
|
|
558 } |
|
|
559 nextchar = (char *) ""; |
|
|
560 optind++; |
|
|
561 return '?'; |
|
|
562 } |
|
|
563 } |
|
|
564 |
|
|
565 /* Look at and handle the next option-character. */ |
|
|
566 |
|
|
567 { |
|
|
568 char c = *nextchar++; |
|
|
569 char *temp = my_index (optstring, c); |
|
|
570 |
|
|
571 /* Increment `optind' when we start to process its last character. */ |
|
|
572 if (*nextchar == '\0') |
|
|
573 ++optind; |
|
|
574 |
|
|
575 if (temp == NULL || c == ':') |
|
|
576 { |
|
|
577 if (opterr) |
|
|
578 { |
|
|
579 #if 0 |
|
|
580 if (c < 040 || c >= 0177) |
|
|
581 fprintf (stderr, "%s: unrecognized option, character code 0%o\n", |
|
|
582 argv[0], c); |
|
|
583 else |
|
|
584 fprintf (stderr, "%s: unrecognized option `-%c'\n", argv[0], c); |
|
|
585 #else |
|
|
586 /* 1003.2 specifies the format of this message. */ |
|
|
587 fprintf (stderr, "%s: illegal option -- %c\n", argv[0], c); |
|
|
588 #endif |
|
|
589 } |
|
|
590 optopt = c; |
|
|
591 return '?'; |
|
|
592 } |
|
|
593 if (temp[1] == ':') |
|
|
594 { |
|
|
595 if (temp[2] == ':') |
|
|
596 { |
|
|
597 /* This is an option that accepts an argument optionally. */ |
|
|
598 if (*nextchar != '\0') |
|
|
599 { |
|
|
600 optarg = nextchar; |
|
|
601 optind++; |
|
|
602 } |
|
|
603 else |
|
|
604 optarg = 0; |
|
|
605 nextchar = NULL; |
|
|
606 } |
|
|
607 else |
|
|
608 { |
|
|
609 /* This is an option that requires an argument. */ |
|
|
610 if (*nextchar != '\0') |
|
|
611 { |
|
|
612 optarg = nextchar; |
|
|
613 /* If we end this ARGV-element by taking the rest as an arg, |
|
|
614 we must advance to the next element now. */ |
|
|
615 optind++; |
|
|
616 } |
|
|
617 else if (optind == argc) |
|
|
618 { |
|
|
619 if (opterr) |
|
|
620 { |
|
|
621 #if 0 |
|
|
622 fprintf (stderr, "%s: option `-%c' requires an argument\n", |
|
|
623 argv[0], c); |
|
|
624 #else |
|
|
625 /* 1003.2 specifies the format of this message. */ |
|
|
626 fprintf (stderr, "%s: option requires an argument -- %c\n", |
|
|
627 argv[0], c); |
|
|
628 #endif |
|
|
629 } |
|
|
630 optopt = c; |
|
|
631 if (optstring[0] == ':') |
|
|
632 c = ':'; |
|
|
633 else |
|
|
634 c = '?'; |
|
|
635 } |
|
|
636 else |
|
|
637 /* We already incremented `optind' once; |
|
|
638 increment it again when taking next ARGV-elt as argument. */ |
|
|
639 optarg = argv[optind++]; |
|
|
640 nextchar = NULL; |
|
|
641 } |
|
|
642 } |
|
|
643 return c; |
|
|
644 } |
|
|
645 } |
|
|
646 |
|
|
647 int |
|
|
648 getopt (argc, argv, optstring) |
|
|
649 int argc; |
|
|
650 char *const *argv; |
|
|
651 const char *optstring; |
|
|
652 { |
|
|
653 return _getopt_internal (argc, argv, optstring, |
|
|
654 (const struct option *) 0, |
|
|
655 (int *) 0, |
|
|
656 0); |
|
|
657 } |
|
|
658 |
|
|
659 #endif /* _LIBC or not __GNU_LIBRARY__. */ |
|
|
660 |
|
|
661 #ifdef TEST |
|
|
662 |
|
|
663 /* Compile with -DTEST to make an executable for use in testing |
|
|
664 the above definition of `getopt'. */ |
|
|
665 |
|
|
666 int |
|
|
667 main (argc, argv) |
|
|
668 int argc; |
|
|
669 char **argv; |
|
|
670 { |
|
|
671 int c; |
|
|
672 int digit_optind = 0; |
|
|
673 |
|
|
674 while (1) |
|
|
675 { |
|
|
676 int this_option_optind = optind ? optind : 1; |
|
|
677 |
|
|
678 c = getopt (argc, argv, "abc:d:0123456789"); |
|
|
679 if (c == EOF) |
|
|
680 break; |
|
|
681 |
|
|
682 switch (c) |
|
|
683 { |
|
|
684 case '0': |
|
|
685 case '1': |
|
|
686 case '2': |
|
|
687 case '3': |
|
|
688 case '4': |
|
|
689 case '5': |
|
|
690 case '6': |
|
|
691 case '7': |
|
|
692 case '8': |
|
|
693 case '9': |
|
|
694 if (digit_optind != 0 && digit_optind != this_option_optind) |
|
|
695 printf ("digits occur in two different argv-elements.\n"); |
|
|
696 digit_optind = this_option_optind; |
|
|
697 printf ("option %c\n", c); |
|
|
698 break; |
|
|
699 |
|
|
700 case 'a': |
|
|
701 printf ("option a\n"); |
|
|
702 break; |
|
|
703 |
|
|
704 case 'b': |
|
|
705 printf ("option b\n"); |
|
|
706 break; |
|
|
707 |
|
|
708 case 'c': |
|
|
709 printf ("option c with value `%s'\n", optarg); |
|
|
710 break; |
|
|
711 |
|
|
712 case '?': |
|
|
713 break; |
|
|
714 |
|
|
715 default: |
|
|
716 printf ("?? getopt returned character code 0%o ??\n", c); |
|
|
717 } |
|
|
718 } |
|
|
719 |
|
|
720 if (optind < argc) |
|
|
721 { |
|
|
722 printf ("non-option ARGV-elements: "); |
|
|
723 while (optind < argc) |
|
|
724 printf ("%s ", argv[optind++]); |
|
|
725 printf ("\n"); |
|
|
726 } |
|
|
727 |
|
|
728 exit (0); |
|
|
729 } |
|
|
730 |
|
|
731 #endif /* TEST */ |
