/*

  * Copyright (C) 2008  Kristian Høgsberg <krh@redhat.com>

  * Copyright (C) 2008  Red Hat, Inc

  *

  * 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 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, write to the Free Software Foundation, Inc.,

  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

  */

 #ifndef _RAZOR_H_

 #define _RAZOR_H_

 #include <stdint.h>

 enum razor_repo_file_type {

 	RAZOR_REPO_FILE_MAIN,

 	RAZOR_REPO_FILE_DETAILS,

 	RAZOR_REPO_FILE_FILES

 };

 enum razor_detail_type {

 	RAZOR_DETAIL_LAST = 0,	/* the sentinel */

 	RAZOR_DETAIL_NAME,

 	RAZOR_DETAIL_VERSION,

 	RAZOR_DETAIL_ARCH,

 	RAZOR_DETAIL_SUMMARY,

 	RAZOR_DETAIL_DESCRIPTION,

 	RAZOR_DETAIL_URL,

 	RAZOR_DETAIL_LICENSE

 };

 enum razor_property_flags {

 	RAZOR_PROPERTY_LESS		= 1 << 0,

 	RAZOR_PROPERTY_GREATER		= 1 << 1,

 	RAZOR_PROPERTY_EQUAL		= 1 << 2,

 	RAZOR_PROPERTY_RELATION_MASK	=

 		RAZOR_PROPERTY_LESS |

 		RAZOR_PROPERTY_GREATER |

 		RAZOR_PROPERTY_EQUAL,

 	RAZOR_PROPERTY_REQUIRES		= 0 << 3,

 	RAZOR_PROPERTY_PROVIDES		= 1 << 3,

 	RAZOR_PROPERTY_CONFLICTS	= 2 << 3,

 	RAZOR_PROPERTY_OBSOLETES	= 3 << 3,

 	RAZOR_PROPERTY_TYPE_MASK	= 3 << 3,

 	RAZOR_PROPERTY_PRE		= 1 << 5,

 	RAZOR_PROPERTY_POST		= 1 << 6,

 	RAZOR_PROPERTY_PREUN		= 1 << 7,

 	RAZOR_PROPERTY_POSTUN		= 1 << 8

 };

 /**

  * SECTION:set

  * @title: Package Set

  * @short_description: Represents a set of packages and their metadata.

  *

  * This object represents a set of packages, their dependency

  * information, the file lists and a number of other details.

  **/

 struct razor_set;

 struct razor_package;

 struct razor_property;

 /**

  * razor_set_create:

  * 

  * Create a new #razor_set object.

  * 

  * Returns: the new #razor_set object.

  **/

 struct razor_set *razor_set_create(void);

 struct razor_set *razor_set_open(const char *filename);

 void razor_set_destroy(struct razor_set *set);

 int razor_set_write_to_fd(struct razor_set *set, int fd,

 			  enum razor_repo_file_type type);

 int razor_set_write(struct razor_set *set, const char *filename,

 		    enum razor_repo_file_type type);

 int razor_set_open_details(struct razor_set *set, const char *filename);

 int razor_set_open_files(struct razor_set *set, const char *filename);

 struct razor_package *

 razor_set_get_package(struct razor_set *set, const char *package);

 void

 razor_package_get_details(struct razor_set *set,

 			  struct razor_package *package, ...);

 /**

  * SECTION:iterator

  * @title: Iterators

  * @short_description: Objects for traversing packages or properties.

  *

  * The razor iterator objects provides a way to iterate through a set

  * of packages or properties.

  **/

 struct razor_package_iterator;

 /**

  * razor_package_iterator_create:

  * 

  * Create a new #razor_package_iterator object.

  * 

  * Returns: the new #razor_package_iterator object.

  **/

 struct razor_package_iterator *

 razor_package_iterator_create(struct razor_set *set);

 /**

  * razor_package_iterator_create_for_property:

  * 

  * Create a new #razor_package_iterator object for the packages that

  * own the given property.

  * 

  * Returns: the new #razor_package_iterator object.

  **/

 struct razor_package_iterator *

 razor_package_iterator_create_for_property(struct razor_set *set,

 					   struct razor_property *property);

 /**

  * razor_package_iterator_create_for_file:

  *

  * Create a new #razor_package_iterator object for the packages that

  * contain the given file name.

  *

  * Returns: the new #razor_package_iterator object.

  **/

 struct razor_package_iterator *

 razor_package_iterator_create_for_file(struct razor_set *set,

 				       const char *filename);

 int razor_package_iterator_next(struct razor_package_iterator *pi,

 				struct razor_package **package, ...);

 void razor_package_iterator_destroy(struct razor_package_iterator *pi);

 struct razor_package_query *

 razor_package_query_create(struct razor_set *set);

 void

 razor_package_query_add_package(struct razor_package_query *pq,

 				struct razor_package *p);

 void

 razor_package_query_add_iterator(struct razor_package_query *pq,

 				 struct razor_package_iterator *pi);

 struct razor_package_iterator *

 razor_package_query_finish(struct razor_package_query *pq);

 struct razor_property_iterator;

 struct razor_property_iterator *

 razor_property_iterator_create(struct razor_set *set,

 			       struct razor_package *package);

 int razor_property_iterator_next(struct razor_property_iterator *pi,

 				 struct razor_property **property,

 				 const char **name,

 				 uint32_t *flags,

 				 const char **version);

 void

 razor_property_iterator_destroy(struct razor_property_iterator *pi);

 void razor_set_list_files(struct razor_set *set, const char *prefix);

 void razor_set_list_package_files(struct razor_set *set,

 				  struct razor_package *package);

 enum razor_diff_action {

 	RAZOR_DIFF_ACTION_ADD,

 	RAZOR_DIFF_ACTION_REMOVE,

 };

 typedef void (*razor_diff_callback_t)(enum razor_diff_action action,

 				      struct razor_package *package,

 				      const char *name,

 				      const char *version,

 				      const char *arch,

 				      void *data);

 void

 razor_set_diff(struct razor_set *set, struct razor_set *upstream,

 	       razor_diff_callback_t callback, void *data);

 struct razor_package_iterator *

 razor_set_create_remove_iterator(struct razor_set *set,

 				 struct razor_set *next);

 struct razor_package_iterator *

 razor_set_create_install_iterator(struct razor_set *set,

 				  struct razor_set *next);

 /**

  * SECTION:transaction

  * @title: Transaction

  * @short_description: Create a new package set by merging two or more sets.

  *

  * The razor transaction object provides a way to create a new package set

  * from packages from one or more other package sets.

  **/

 struct razor_transaction *

 razor_transaction_create(struct razor_set *system, struct razor_set *upstream);

 void razor_transaction_install_package(struct razor_transaction *transaction,

 				       struct razor_package *package);

 void razor_transaction_remove_package(struct razor_transaction *transaction,

 				      struct razor_package *package);

 void razor_transaction_update_package(struct razor_transaction *trans,

 				      struct razor_package *package);

 void razor_transaction_update_all(struct razor_transaction *transaction);

 int razor_transaction_resolve(struct razor_transaction *trans);

 int razor_transaction_describe(struct razor_transaction *trans);

 struct razor_set *razor_transaction_finish(struct razor_transaction *trans);

 void razor_transaction_destroy(struct razor_transaction *trans);

 /* Temporary helper for test suite. */

 int razor_transaction_unsatisfied_property(struct razor_transaction *trans,

 					   const char *name,

 					   uint32_t flags,

 					   const char *version);

 /**

  * SECTION:rpm

  * @title: Razor RPM

  * @short_description: Operating on RPM files.

  *

  * Functions for open RPM files and extracting information and

  * installing or removing RPM files.

  **/

 struct razor_rpm;

 struct razor_rpm *razor_rpm_open(const char *filename);

 int razor_rpm_install(struct razor_rpm *rpm, const char *root);

 int razor_rpm_close(struct razor_rpm *rpm);

 /**

  * SECTION:importer

  * @title: Importer

  * @short_description: A mechanism for building #razor_set objects

  *

  * The %razor_importer is a helper object for building a razor set

  * from external sources, like yum metadata, the RPM database or RPM

  * files.

  *

  * The importer is a stateful object; it has the notion of a current

  * package, and the caller can provide meta data such as properties,

  * files and similiar for the package as it becomes available.  Once a

  * package is fully described, the next pacakge can begin.  When all

  * packages have been described to the importer, the importer will

  * create a new %razor_set with the specified packages.

  *

  * A typical use

  * of the importer will follow this template:

  * |[

  * importer = razor_importer_create();

  *

  * while ( /<!-- -->* more packages to import *<!-- -->/; ) {

  *   /<!-- -->* get name, version and arch of next package *<!-- -->/

  *   razor_importer_begin_package(importer, name, version, arch);

  *   razor_importer_add_details(importer, summary, description, url, license);

  *

  *   while ( /<!-- -->* more properties to add *<!-- -->/ )

  *     razor_importer_add_property(importer, name, flags, version);

  *

  *   while ( /<!-- -->* [more files to add *<!-- -->/ )

  *     razor_importer_add_file(importer, name);

  *

  *   razor_importer_finish_package(importer);

  * }

  *

  * return razor_importer_finish(importer);

  * ]|

  **/

 struct razor_importer;

 struct razor_importer *razor_importer_create(void);

 void razor_importer_destroy(struct razor_importer *importer);

 void razor_importer_begin_package(struct razor_importer *importer,

 				  const char *name,

 				  const char *version,

 				  const char *arch);

 void razor_importer_add_details(struct razor_importer *importer,

 				const char *summary,

 				const char *description,

 				const char *url,

 				const char *license);

 void razor_importer_add_property(struct razor_importer *importer,

 				 const char *name,

 				 uint32_t flags,

 				 const char *version);

 void razor_importer_add_file(struct razor_importer *importer,

 			     const char *name);

 void razor_importer_finish_package(struct razor_importer *importer);

 int razor_importer_add_rpm(struct razor_importer *importer,

 			   struct razor_rpm *rpm);

 struct razor_set *razor_importer_finish(struct razor_importer *importer);

 struct razor_set *razor_set_create_from_yum(void);

 struct razor_set *razor_set_create_from_rpmdb(void);

 /**

  * SECTION:root

  * @title: Root

  * @short_description: Functions for accessing an install root.

  *

  * The #razor_root object encapsulate access to and locking of a razor

  * install root.

  **/

 struct razor_root;

 int razor_root_create(const char *root);

 struct razor_root *razor_root_open(const char *root);

 struct razor_set *razor_root_open_read_only(const char *root);

 struct razor_set *razor_root_get_system_set(struct razor_root *root);

 int razor_root_close(struct razor_root *root);

 void razor_root_update(struct razor_root *root, struct razor_set *next);

 int razor_root_commit(struct razor_root *root);

 /**

  * SECTION:misc

  * @title: Miscellaneous Functions

  * @short_description: Various helper functions

  *

  * Functions that doesn't fit anywhere else.

  **/

 const char *

 razor_property_relation_to_string(struct razor_property *p);

 const char *

 razor_property_type_to_string(struct razor_property *p);

 void razor_build_evr(char *evr_buf, int size, const char *epoch,

 		     const char *version, const char *release);

 int razor_versioncmp(const char *s1, const char *s2);

 #endif /* _RAZOR_H_ */