00001 /* 00002 We include a standard implementation of getopt.c, 00003 so as to support platforms where it is not available. 00004 Amazingly, this version appears to result in SIGBUS 00005 errors when used on Darwin. In that case, we just 00006 make use of the local implementation. 00007 */ 00008 00009 #if defined(CCTOOLS_OPSYS_DARWIN) 00010 #include </usr/include/getopt.h> 00011 #else 00012 00013 /* Declarations for getopt. 00014 Copyright (C) 1989-1994,1996-1999,2001,2003,2004 00015 Free Software Foundation, Inc. 00016 This file is part of the GNU C Library. 00017 00018 The GNU C Library is free software; you can redistribute it and/or 00019 modify it under the terms of the GNU Lesser General Public 00020 License as published by the Free Software Foundation; either 00021 version 2.1 of the License, or (at your option) any later version. 00022 00023 The GNU C Library is distributed in the hope that it will be useful, 00024 but WITHOUT ANY WARRANTY; without even the implied warranty of 00025 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00026 Lesser General Public License for more details. 00027 00028 You should have received a copy of the GNU Lesser General Public 00029 License along with the GNU C Library; if not, write to the Free 00030 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 00031 02111-1307 USA. */ 00032 00033 #ifndef _GETOPT_H 00034 #define _GETOPT_H 1 00035 00036 /* If __GNU_LIBRARY__ is not already defined, either we are being used 00037 standalone, or this is the first header included in the source file. 00038 If we are being used with glibc, we need to include <features.h>, but 00039 that does not exist if we are standalone. So: if __GNU_LIBRARY__ is 00040 not defined, include <ctype.h>, which will pull in <features.h> for us 00041 if it's from glibc. (Why ctype.h? It's guaranteed to exist and it 00042 doesn't flood the namespace with stuff the way some other headers do.) */ 00043 #if !defined __GNU_LIBRARY__ 00044 # include <ctype.h> 00045 #endif 00046 00047 #ifndef __THROW 00048 # ifndef __GNUC_PREREQ 00049 # define __GNUC_PREREQ(maj, min) (0) 00050 # endif 00051 # if defined __cplusplus && __GNUC_PREREQ (2,8) 00052 # define __THROW throw () 00053 # else 00054 # define __THROW 00055 # endif 00056 #endif 00057 00058 #ifdef __cplusplus 00059 extern "C" { 00060 #endif 00061 00062 /* For communication from `getopt' to the caller. 00063 When `getopt' finds an option that takes an argument, 00064 the argument value is returned here. 00065 Also, when `ordering' is RETURN_IN_ORDER, 00066 each non-option ARGV-element is returned here. */ 00067 00068 extern char *optarg; 00069 00070 /* Index in ARGV of the next element to be scanned. 00071 This is used for communication to and from the caller 00072 and for communication between successive calls to `getopt'. 00073 00074 On entry to `getopt', zero means this is the first call; initialize. 00075 00076 When `getopt' returns -1, this is the index of the first of the 00077 non-option elements that the caller should itself scan. 00078 00079 Otherwise, `optind' communicates from one call to the next 00080 how much of ARGV has been scanned so far. */ 00081 00082 extern int optind; 00083 00084 /* Callers store zero here to inhibit the error message `getopt' prints 00085 for unrecognized options. */ 00086 00087 extern int opterr; 00088 00089 /* Set to an option character which was unrecognized. */ 00090 00091 extern int optopt; 00092 00093 /* Describe the long-named options requested by the application. 00094 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector 00095 of `struct option' terminated by an element containing a name which is 00096 zero. 00097 00098 The field `has_arg' is: 00099 no_argument (or 0) if the option does not take an argument, 00100 required_argument (or 1) if the option requires an argument, 00101 optional_argument (or 2) if the option takes an optional argument. 00102 00103 If the field `flag' is not NULL, it points to a variable that is set 00104 to the value given in the field `val' when the option is found, but 00105 left unchanged if the option is not found. 00106 00107 To have a long-named option do something other than set an `int' to 00108 a compiled-in constant, such as set a value from `optarg', set the 00109 option's `flag' field to zero and its `val' field to a nonzero 00110 value (the equivalent single-letter option character, if there is 00111 one). For long options that have a zero `flag' field, `getopt' 00112 returns the contents of the `val' field. */ 00113 00114 struct option 00115 { 00116 const char *name; 00117 /* has_arg can't be an enum because some compilers complain about 00118 type mismatches in all the code that assumes it is an int. */ 00119 int has_arg; 00120 int *flag; 00121 int val; 00122 }; 00123 00124 /* Names for the values of the `has_arg' field of `struct option'. */ 00125 00126 # define no_argument 0 00127 # define required_argument 1 00128 # define optional_argument 2 00129 00130 /* Get definitions and prototypes for functions to process the 00131 arguments in ARGV (ARGC of them, minus the program name) for 00132 options given in OPTS. 00133 00134 Return the option character from OPTS just read. Return -1 when 00135 there are no more options. For unrecognized options, or options 00136 missing arguments, `optopt' is set to the option letter, and '?' is 00137 returned. 00138 00139 The OPTS string is a list of characters which are recognized option 00140 letters, optionally followed by colons, specifying that that letter 00141 takes an argument, to be placed in `optarg'. 00142 00143 If a letter in OPTS is followed by two colons, its argument is 00144 optional. This behavior is specific to the GNU `getopt'. 00145 00146 The argument `--' causes premature termination of argument 00147 scanning, explicitly telling `getopt' that there are no more 00148 options. 00149 00150 If OPTS begins with `--', then non-option arguments are treated as 00151 arguments to the option '\0'. This behavior is specific to the GNU 00152 `getopt'. */ 00153 00154 #if defined (__STDC__) && __STDC__ 00155 #ifdef __GNU_LIBRARY__ 00156 /* Many other libraries have conflicting prototypes for getopt, with 00157 differences in the consts, in stdlib.h. To avoid compilation 00158 errors, only prototype getopt for the GNU C library. */ 00159 extern int getopt (int ___argc, char *const *___argv, const char *__shortopts) 00160 __THROW; 00161 #else /* not __GNU_LIBRARY__ */ 00162 extern int getopt (); 00163 #endif /* __GNU_LIBRARY__ */ 00164 extern int getopt_long (int ___argc, char *const *___argv, 00165 const char *__shortopts, 00166 const struct option *__longopts, int *__longind) 00167 __THROW; 00168 extern int getopt_long_only (int ___argc, char *const *___argv, 00169 const char *__shortopts, 00170 const struct option *__longopts, int *__longind) 00171 __THROW; 00172 #else /* not __STDC__ */ 00173 extern int getopt (); 00174 extern int getopt_long (); 00175 extern int getopt_long_only (); 00176 #endif /* __STDC__ */ 00177 00178 #ifdef __cplusplus 00179 } 00180 #endif 00181 00182 #endif /* getopt.h */ 00183 00184 #endif /* ! CCTOOLS_OPSYS_DARWIN */ 00185