libopkg/pkg_depends.h

   1 /* pkg_depends.h - the opkg package management system
   2
   3    Steven M. Ayer
   4
   5    Copyright (C) 2002 Compaq Computer Corporation
   6
   7    This program is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2, or (at
  10    your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    General Public License for more details.
  16 */
  17
  18 #ifndef PKG_DEPENDS_H
  19 #define PKG_DEPENDS_H
  20
  21 #include "pkg.h"
  22 #include "pkg_hash.h"
  23
  24 enum depend_type {
  25         PREDEPEND,
  26         DEPEND,
  27         CONFLICTS,
  28         GREEDY_DEPEND,
  29         RECOMMEND,
  30         SUGGEST
  31 };
  32 typedef enum depend_type depend_type_t;
  33
  34 enum version_constraint {
  35         NONE,
  36         EARLIER,
  37         EARLIER_EQUAL,
  38         EQUAL,
  39         LATER_EQUAL,
  40         LATER
  41 };
  42 typedef enum version_constraint version_constraint_t;
  43
  44 struct depend {
  45         version_constraint_t constraint;
  46         char *version;
  47         abstract_pkg_t *pkg;
  48 };
  49 typedef struct depend depend_t;
  50
  51 struct compound_depend {
  52         depend_type_t type;
  53         int possibility_count;
  54         struct depend **possibilities;
  55 };
  56 typedef struct compound_depend compound_depend_t;
  57
  58 void buildProvides(abstract_pkg_t * ab_pkg, pkg_t * pkg);
  59 void buildConflicts(pkg_t * pkg);
  60 void buildReplaces(abstract_pkg_t * ab_pkg, pkg_t * pkg);
  61 void buildDepends(pkg_t * pkg);
  62
  63 /**
  64  * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
  65  * otherwise.
  66  */
  67 int pkg_replaces(pkg_t * pkg, pkg_t * replacee);
  68
  69 /**
  70  * pkg_conflicts_abstract returns 1 if pkg->conflicts contains conflictee provides and 0
  71  * otherwise.
  72  */
  73 int pkg_conflicts_abstract(pkg_t * pkg, abstract_pkg_t * conflicts);
  74
  75 /**
  76  * pkg_conflicts returns 1 if pkg->conflicts contains one of conflictee's provides and 0
  77  * otherwise.
  78  */
  79 int pkg_conflicts(pkg_t * pkg, pkg_t * conflicts);
  80
  81 char *pkg_depend_str(pkg_t * pkg, int index);
  82 void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg);
  83 int version_constraints_satisfied(depend_t * depends, pkg_t * pkg);
  84 int pkg_hash_fetch_unsatisfied_dependencies(pkg_t * pkg, pkg_vec_t * depends,
  85                                             char ***unresolved);
  86 pkg_vec_t *pkg_hash_fetch_conflicts(pkg_t * pkg);
  87 int pkg_dependence_satisfiable(depend_t * depend);
  88 int pkg_dependence_satisfied(depend_t * depend);
  89 const char *constraint_to_str(enum version_constraint c);
  90
  91 #endif