/usr/include/shevek/args.hh is in libshevek-dev 1.4-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 | /* args.hh - argument parsing made easy
* Copyright 2003-2010 Bas Wijnen <wijnen@debian.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SHEVEK_ARGS_HH
#define SHEVEK_ARGS_HH
#include <getopt.h>
#include <string>
#include <vector>
#include <list>
#include <sigc++/sigc++.h>
#include <glibmm/ustring.h>
#include "debug.hh"
// Allow using this class without using automake.
#ifndef PACKAGE_NAME
#define PACKAGE_NAME "[name not defined]"
#endif
#ifndef PACKAGE_TARNAME
#define PACKAGE_TARNAME PACKAGE_NAME
#endif
#ifndef PACKAGE_BUGREPORT
#define PACKAGE_BUGREPORT "[bug report e-mail not defined]"
#endif
#ifndef PACKAGE_VERSION
#define PACKAGE_VERSION "[version not defined]"
#endif
#ifndef COPYRIGHT_YEARS
#define COPYRIGHT_YEARS "[no time of copyright defined]"
#endif
#ifndef COPYRIGHT_EMAIL
#define COPYRIGHT_EMAIL ""
#endif
#ifndef COPYRIGHT_AUTHOR
#define COPYRIGHT_AUTHOR "[no author defined]"
#endif
namespace shevek
{
/// Commandline and configuration file parsing helper.
/** Args is a commandline parsing helper. It allows giving the possible
* short and long options in a simple list and provides --help and --version
* output to the user of the program.
*
* Usage:
* create an array of shevek::args::option, containing the desired options.
* create an instance of args and pass it argc and argv on the constructor.
* It will call all the callbacks of the options from the constructor.
* size () and operator[] can be used to access the non-option arguments.
*/
class args
{
public:
class option;
/// Parse the commandline. Only the default arguments (--help, -h and
/// --version) are understood.
args (int &argc, char **&argv, int min_args, int max_args, Glib::ustring const &description,
/* The parameters below should always have their default values,
* they are just here to get the #define'd values into the library.
* The COPYRIGHT_* values should be defined in configure.ac
*/
Glib::ustring const ©right_years = COPYRIGHT_YEARS,
Glib::ustring const ©right_email = (COPYRIGHT_EMAIL[0] == '\0' ? PACKAGE_BUGREPORT : COPYRIGHT_EMAIL),
Glib::ustring const &programmer = COPYRIGHT_AUTHOR,
Glib::ustring const &email = PACKAGE_BUGREPORT,
char const *programname = PACKAGE_NAME,
char const *packagename = PACKAGE_TARNAME,
char const *version = PACKAGE_VERSION);
/// Parse the commandline providing a list of possible options.
template <unsigned size_>
args (int &argc, char **&argv, option (&o)[size_], int min_args,
int max_args, Glib::ustring const &description);
/// The number of non-option arguments.
unsigned size () const;
/// Get the non-option arguments.
std::string const &operator[] (unsigned idx) const;
/// Iterate over the non-option arguments.
std::vector <std::string>::const_iterator begin () const;
/// Iterate over the non-option arguments.
std::vector <std::string>::const_iterator end () const;
private:
std::vector <std::string> m_args;
void l_setup (int &argc, char **&argv, option *o, unsigned num_options,
int min_args, int max_args,
Glib::ustring const &description,
struct ::option *longopts,
Glib::ustring const ©right_years = COPYRIGHT_YEARS,
Glib::ustring const ©right_email = (COPYRIGHT_EMAIL[0] == '\0' ? PACKAGE_BUGREPORT : COPYRIGHT_EMAIL),
Glib::ustring const &programmer = COPYRIGHT_AUTHOR,
Glib::ustring const &email = PACKAGE_BUGREPORT,
char const *programname = PACKAGE_NAME,
char const *packagename = PACKAGE_TARNAME,
char const *version = PACKAGE_VERSION);
};
/// Define an option which can be given to the program.
class args::option
{
public:
/// Callback for options without an argument.
typedef sigc::slot1 <void, bool> callback0;
/// Callback for options with an argument.
typedef sigc::slot2 <void, bool, Glib::ustring const &> callback1;
/// Option has no argument and calls a function.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, callback0 handle, bool *used = NULL);
/// Option has mandatory argument and calls a function.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, callback1 handle, Glib::ustring default_val = Glib::ustring (), bool *used = NULL);
/// Option has optional argument and calls respective function.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, callback0 handle0, callback1 handle1, bool *used = NULL);
/// Set the value of a boolean variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool &var, bool value, bool *used = NULL);
/// Set the value of a string variable (utf-8).
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, Glib::ustring &var, bool *used = NULL);
/// Set the value of a string variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, std::string &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, unsigned long &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, long &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, unsigned &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, int &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, unsigned short &var, bool *used = NULL);
/// Set the value of an integer variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, short &var, bool *used = NULL);
/// Set the value of a floating point variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, float &var, bool *used = NULL);
/// Set the value of a floating point variable.
option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, double &var, bool *used = NULL);
/// Fill a list of variables. An item is appended to the list for each
/// time the option is specified.
template <typename _T> option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, std::list <_T> &list);
private:
friend class args;
enum opt_t {NEED_ARG, NO_ARG, OPT_ARG};
void setup (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, bool have_default, opt_t have_arg, callback0 handle0, callback1 handle1, bool *used);
void call (bool is_double, char const *optarg);
char m_shortopt;
Glib::ustring m_longopt;
Glib::ustring m_help;
bool m_have_default;
Glib::ustring m_default;
opt_t m_have_arg;
callback0 m_handle0;
callback1 m_handle1;
bool *m_used;
bool m_is_used;
static void l_set (bool is_double, Glib::ustring const &arg, Glib::ustring *var);
static void l_setstd (bool is_double, Glib::ustring const &arg, std::string *var);
static void l_setint (bool is_double, Glib::ustring const &arg, int *var);
static void l_setuint (bool is_double, Glib::ustring const &arg, unsigned *var);
static void l_setlint (bool is_double, Glib::ustring const &arg, long *var);
static void l_setulint (bool is_double, Glib::ustring const &arg, unsigned long *var);
static void l_setsint (bool is_double, Glib::ustring const &arg, short *var);
static void l_setusint (bool is_double, Glib::ustring const &arg, unsigned short *var);
static void l_setbool (bool is_double, bool val, bool *var);
static void l_setfloat (bool is_double, Glib::ustring const &arg, float *var);
static void l_setdfloat (bool is_double, Glib::ustring const &arg, double *var);
template <typename _T>
static void l_setlist (bool is_double, Glib::ustring const &arg, std::list <_T> *list);
};
template <unsigned size_> args::args (int &argc, char **&argv,
option (&o)[size_],
int min_args, int max_args,
Glib::ustring const &description)
{
startfunc;
struct ::option longopts[size_ + 4];
l_setup (argc, argv, o, size_, min_args, max_args, description, longopts);
}
template <typename _T>
args::option::option (char shortopt, Glib::ustring const &longopt, Glib::ustring const &help_line, std::list <_T> &list)
{
startfunc;
setup (shortopt, longopt, help_line, false, NEED_ARG, callback0 (),
sigc::bind (sigc::ptr_fun (&l_setlist <_T>), &list), NULL);
}
template <typename _T>
void args::option::l_setlist (bool is_double, Glib::ustring const &arg, std::list <_T> *list)
{
startfunc;
(void *)&is_double;
list->push_back (_T () );
option tmp ('x', "x", "x", false, list->back () );
tmp.m_handle1 (false, arg);
}
}
#endif
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