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+/* pkg_depends.h - the opkg package management system
+
+ Steven M. Ayer
+
+ Copyright (C) 2002 Compaq Computer Corporation
+
+ 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 2, 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.
+*/
+
+#ifndef PKG_DEPENDS_H
+#define PKG_DEPENDS_H
+
+#include "pkg.h"
+#include "pkg_hash.h"
+
+enum depend_type {
+ PREDEPEND,
+ DEPEND,
+ CONFLICTS,
+ GREEDY_DEPEND,
+ RECOMMEND,
+ SUGGEST
+};
+typedef enum depend_type depend_type_t;
+
+enum version_constraint {
+ NONE,
+ EARLIER,
+ EARLIER_EQUAL,
+ EQUAL,
+ LATER_EQUAL,
+ LATER
+};
+typedef enum version_constraint version_constraint_t;
+
+struct depend{
+ version_constraint_t constraint;
+ char * version;
+ abstract_pkg_t * pkg;
+};
+typedef struct depend depend_t;
+
+struct compound_depend{
+ depend_type_t type;
+ int possibility_count;
+ struct depend ** possibilities;
+};
+typedef struct compound_depend compound_depend_t;
+
+void buildProvides(abstract_pkg_t * ab_pkg, pkg_t * pkg);
+void buildConflicts(pkg_t * pkg);
+void buildReplaces(abstract_pkg_t * ab_pkg, pkg_t * pkg);
+void buildDepends(pkg_t * pkg);
+
+/**
+ * pkg_replaces returns 1 if pkg->replaces contains one of replacee's provides and 0
+ * otherwise.
+ */
+int pkg_replaces(pkg_t *pkg, pkg_t *replacee);
+
+/**
+ * pkg_conflicts_abstract returns 1 if pkg->conflicts contains conflictee provides and 0
+ * otherwise.
+ */
+int pkg_conflicts_abstract(pkg_t *pkg, abstract_pkg_t *conflicts);
+
+/**
+ * pkg_conflicts returns 1 if pkg->conflicts contains one of conflictee's provides and 0
+ * otherwise.
+ */
+int pkg_conflicts(pkg_t *pkg, pkg_t *conflicts);
+
+char *pkg_depend_str(pkg_t *pkg, int index);
+void buildDependedUponBy(pkg_t * pkg, abstract_pkg_t * ab_pkg);
+int version_constraints_satisfied(depend_t * depends, pkg_t * pkg);
+int pkg_hash_fetch_unsatisfied_dependencies(pkg_t * pkg, pkg_vec_t *depends, char *** unresolved);
+pkg_vec_t * pkg_hash_fetch_conflicts(pkg_t * pkg);
+int pkg_dependence_satisfiable(depend_t *depend);
+int pkg_dependence_satisfied(depend_t *depend);
+const char* constraint_to_str(enum version_constraint c);
+
+#endif