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alpm: add alpm_find_grp_pkgs

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This group function is meant to help group handling from frontend : it
scans all dbs, handling ignored packages and duplicate members (the
first repo where a member is found has the priority).

Signed-off-by: Xavier Chantry <chantry.xavier@gmail.com>
This commit is contained in:
Xavier Chantry 2010-10-17 00:59:53 +02:00
parent fb7e1b4b9b
commit 1767a569c6
2 changed files with 43 additions and 0 deletions
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1
lib/libalpm/alpm.h
View File

@ -255,6 +255,7 @@ off_t alpm_delta_get_size(pmdelta_t *delta);
*/
const char *alpm_grp_get_name(const pmgrp_t *grp);
alpm_list_t *alpm_grp_get_pkgs(const pmgrp_t *grp);
alpm_list_t *alpm_find_grp_pkgs(alpm_list_t *dbs, const char *name);
/*
* Sync

42
lib/libalpm/sync.c
View File

@ -375,6 +375,48 @@ int SYMEXPORT alpm_sync_target(const char *target)
return(sync_target(dbs_sync,target));
}
/** Find group members across a list of databases.
* If a member exists in several databases, only the first database is used.
* IgnorePkg is also handled.
* @param dbs the list of pmdb_t *
* @pram name the name of the group
* @return the list of pmpkg_t * (caller is responsible for alpm_list_free)
*/
alpm_list_t SYMEXPORT *alpm_find_grp_pkgs(alpm_list_t *dbs,
const char *name)
{
alpm_list_t *i, *j, *pkgs = NULL, *ignorelist = NULL;
for(i = dbs; i; i = i->next) {
pmdb_t *db = i->data;
pmgrp_t *grp = alpm_db_readgrp(db, name);
if(!grp)
continue;
for(j = alpm_grp_get_pkgs(grp); j; j = j->next) {
pmpkg_t *pkg = j->data;
if(_alpm_pkg_find(ignorelist, alpm_pkg_get_name(pkg))) {
continue;
}
if(_alpm_pkg_should_ignore(pkg)) {
ignorelist = alpm_list_add(ignorelist, pkg);
int install = 0;
QUESTION(handle->trans, PM_TRANS_CONV_INSTALL_IGNOREPKG, pkg,
NULL, NULL, &install);
if(!install)
continue;
}
if(!_alpm_pkg_find(pkgs, alpm_pkg_get_name(pkg))) {
pkgs = alpm_list_add(pkgs, pkg);
}
}
}
alpm_list_free(ignorelist);
return(pkgs);
}
/** Compute the size of the files that will be downloaded to install a
* package.
* @param newpkg the new package to upgrade to