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queue: add pkgconf_queue_solve API

pull/243/head
Ariadne Conill 2022-08-08 09:08:27 +00:00
parent 884a88583b
commit 5b10a85a82
2 changed files with 28 additions and 1 deletions
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1
libpkgconf/libpkgconf.h
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@ -377,6 +377,7 @@ PKGCONF_API void pkgconf_tuple_define_global(pkgconf_client_t *client, const cha
/* queue.c */
PKGCONF_API void pkgconf_queue_push(pkgconf_list_t *list, const char *package);
PKGCONF_API bool pkgconf_queue_compile(pkgconf_client_t *client, pkgconf_pkg_t *world, pkgconf_list_t *list);
PKGCONF_API bool pkgconf_queue_solve(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_pkg_t *world, int maxdepth);
PKGCONF_API void pkgconf_queue_free(pkgconf_list_t *list);
PKGCONF_API bool pkgconf_queue_apply(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_queue_apply_func_t func, int maxdepth, void *data);
PKGCONF_API bool pkgconf_queue_validate(pkgconf_client_t *client, pkgconf_list_t *list, int maxdepth);

28
libpkgconf/queue.c
View File

@ -252,6 +252,30 @@ pkgconf_queue_verify(pkgconf_client_t *client, pkgconf_pkg_t *world, pkgconf_lis
return PKGCONF_PKG_ERRF_OK;
}
/*
* !doc
*
* .. c:function:: bool pkgconf_queue_solve(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_pkg_t *world, int maxdepth)
*
* Solves and flattens the dependency graph for the supplied dependency list.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_list_t* list: The list of dependency requests to consider.
* :param pkgconf_pkg_t* world: The root for the generated dependency graph, provided by the caller. Should have PKGCONF_PKG_PKGF_VIRTUAL flag.
* :param int maxdepth: The maximum allowed depth for the dependency resolver. A depth of -1 means unlimited.
* :returns: true if the dependency resolver found a solution, otherwise false.
* :rtype: bool
*/
bool
pkgconf_queue_solve(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_pkg_t *world, int maxdepth)
{
/* if maxdepth is one, then we will not traverse deeper than our virtual package. */
if (!maxdepth)
maxdepth = -1;
return pkgconf_queue_verify(client, world, list, maxdepth) == PKGCONF_PKG_ERRF_OK;
}
/*
* !doc
*
@ -260,6 +284,8 @@ pkgconf_queue_verify(pkgconf_client_t *client, pkgconf_pkg_t *world, pkgconf_lis
* Attempt to compile a dependency resolution queue into a dependency resolution problem, then attempt to solve the problem and
* feed the solution to a callback function if a complete dependency graph is found.
*
* This function should not be used in new code. Use pkgconf_queue_solve instead.
*
* :param pkgconf_client_t* client: The pkgconf client object to use for dependency resolution.
* :param pkgconf_list_t* list: The list of dependency requests to consider.
* :param pkgconf_queue_apply_func_t func: The callback function to call if a solution is found by the dependency resolver.
@ -282,7 +308,7 @@ pkgconf_queue_apply(pkgconf_client_t *client, pkgconf_list_t *list, pkgconf_queu
if (!maxdepth)
maxdepth = -1;
if (pkgconf_queue_verify(client, &world, list, maxdepth) != PKGCONF_PKG_ERRF_OK)
if (!pkgconf_queue_solve(client, list, &world, maxdepth))
goto cleanup;
/* the world dependency set is flattened after it is returned from pkgconf_queue_verify */