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alpm: add new alpm_find_satisfier function

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whatprovides and splitdep were removed, so depcmp alone is quite useless
now without splitdep, and deptest is not flexible enough.

Introduce a new alpm_find_satisfier which is hopefully more flexible,
this should make implementation of deptest very easy, and also help alpm
tools such as pactree.

Signed-off-by: Xavier Chantry <chantry.xavier@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Xavier Chantry 2010-10-12 20:13:32 +02:00 committed by Dan McGee
parent c2cce1f46a
commit a03daad073
2 changed files with 15 additions and 0 deletions
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1
lib/libalpm/alpm.h
View File

@ -433,6 +433,7 @@ int alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep);
alpm_list_t *alpm_checkdeps(alpm_list_t *pkglist, int reversedeps, alpm_list_t *alpm_checkdeps(alpm_list_t *pkglist, int reversedeps,
alpm_list_t *remove, alpm_list_t *upgrade); alpm_list_t *remove, alpm_list_t *upgrade);
alpm_list_t *alpm_deptest(pmdb_t *db, alpm_list_t *targets); alpm_list_t *alpm_deptest(pmdb_t *db, alpm_list_t *targets);
pmpkg_t *alpm_find_satisfier(alpm_list_t *pkgs, const char *depstring);
const char *alpm_miss_get_target(const pmdepmissing_t *miss); const char *alpm_miss_get_target(const pmdepmissing_t *miss);
pmdepend_t *alpm_miss_get_dep(pmdepmissing_t *miss); pmdepend_t *alpm_miss_get_dep(pmdepmissing_t *miss);

14
lib/libalpm/deps.c
View File

@ -202,6 +202,20 @@ pmpkg_t *_alpm_find_dep_satisfier(alpm_list_t *pkgs, pmdepend_t *dep)
return(NULL); return(NULL);
} }
/** Find a package satisfying a specified dependency.
* The dependency can include versions with depmod operators.
* @param pkgs an alpm_list_t* of pmpkg_t where the satisfier will be searched
* @param depstring package or provision name, versioned or not
* @return a pmpkg_t* satisfying depstring
*/
pmpkg_t SYMEXPORT *alpm_find_satisfier(alpm_list_t *pkgs, const char *depstring)
{
pmdepend_t *dep = _alpm_splitdep(depstring);
pmpkg_t *pkg = _alpm_find_dep_satisfier(pkgs, dep);
_alpm_dep_free(dep);
return(pkg);
}
/** Checks dependencies and returns missing ones in a list. /** Checks dependencies and returns missing ones in a list.
* Dependencies can include versions with depmod operators. * Dependencies can include versions with depmod operators.
* @param db pointer to the local package database * @param db pointer to the local package database