options.h

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/*
 * libdpkg - Debian packaging suite library routines
 * options.h - option parsing functions
 *
 * Copyright © 1994,1995 Ian Jackson <ijackson@chiark.greenend.org.uk>
 * Copyright © 2008-2014 Guillem Jover <guillem@debian.org>
 *
 * This 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 2 of the License, or
 * (at your option) any later version.
 *
 * This 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 <https://www.gnu.org/licenses/>.
 */
 
#ifndef LIBDPKG_OPTIONS_H
#define LIBDPKG_OPTIONS_H
 
#include <dpkg/macros.h>
#include <dpkg/dpkg-db.h>
 
DPKG_BEGIN_DECLS
 
typedef int action_func(const char *const *argv);
 
struct cmdinfo {
  const char *olong;
  char oshort;
 
  /*
   * 0 = Normal                         (-o, --option)
   * 1 = Standard value                 (-o=value, --option=value or
   *                                     -o value, --option value)
   * 2 = Option string continued        (--option-value)
   */
  int takesvalue;
  int *iassignto;
  const char **sassignto;
  void (*call)(const struct cmdinfo*, const char *value);
 
  int arg_int;
  void *arg_ptr;
 
  action_func *action;
};
 
void badusage(const char *fmt, ...) DPKG_ATTR_NORET DPKG_ATTR_PRINTF(1);
 
#define MAX_CONFIG_LINE 1024
 
void dpkg_options_load(const char *prog, const struct cmdinfo *cmdinfos);
void dpkg_options_parse(const char *const **argvp,
                        const struct cmdinfo *cmdinfos, const char *help_str);
 
long dpkg_options_parse_arg_int(const struct cmdinfo *cmd, const char *str);
 
struct pkginfo *
dpkg_options_parse_pkgname(const struct cmdinfo *cmd, const char *name);
 
extern const struct cmdinfo *cipaction;
 
void setaction(const struct cmdinfo *cip, const char *value);
void setobsolete(const struct cmdinfo *cip, const char *value);
 
#define ACTION(longopt, shortopt, code, func) \
 { longopt, shortopt, 0, NULL, NULL, setaction, code, NULL, func }
#define ACTION_MUX(longopt, shortopt, code, func, strvar) \
 { longopt, shortopt, 2, NULL, strvar, setaction, code, NULL, func }
#define OBSOLETE(longopt, shortopt) \
 { longopt, shortopt, 0, NULL, NULL, setobsolete, 0, NULL, NULL }
 
void
set_instdir(const struct cmdinfo *cip, const char *value);
void
set_admindir(const struct cmdinfo *cip, const char *value);
void
set_root(const struct cmdinfo *cip, const char *value);
 
DPKG_END_DECLS
 
#endif /* LIBDPKG_OPTIONS_H */