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authorNagy Gabor <ngaba@bibl.u-szeged.hu>2007-11-14 12:42:15 +0100
committerDan McGee <dan@archlinux.org>2007-11-14 18:48:34 -0600
commit85b06f127600131e11afb3629e2609334dee00df (patch)
treee99ca85fa287d45a1b5c9822a5d100087c859ebc
parent46ec9e3548b5b567c7eb18c360f54a77b6313b12 (diff)
alpm_list_add == alpm_list_add_last
It's time to define that alpm_list_add(list, foo) adds 'foo' to the end of 'list' and returns with 'list', because: 1. list is a list, not a set. 2. sortbydeps _needs_ an alpm_list_add definition to work properly. As a first step, I used this definition in recursedeps. Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu> [Dan: punctuation cleanup in commit message and code comments, added comment to alpm_list_add] Signed-off-by: Dan McGee <dan@archlinux.org>
-rw-r--r--lib/libalpm/alpm_list.c2
-rw-r--r--lib/libalpm/deps.c43
-rw-r--r--lib/libalpm/deps.h2
-rw-r--r--lib/libalpm/remove.c10
4 files changed, 24 insertions, 33 deletions
diff --git a/lib/libalpm/alpm_list.c b/lib/libalpm/alpm_list.c
index 465c1a8f..774d1dbe 100644
--- a/lib/libalpm/alpm_list.c
+++ b/lib/libalpm/alpm_list.c
@@ -98,7 +98,7 @@ void SYMEXPORT alpm_list_free_inner(alpm_list_t *list, alpm_list_fn_free fn)
/* Mutators */
/**
- * @brief Add a new item to the list.
+ * @brief Add a new item to the end of the list.
*
* @param list the list to add to
* @param data the new item to be added to the list
diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c
index b551681a..63775d20 100644
--- a/lib/libalpm/deps.c
+++ b/lib/libalpm/deps.c
@@ -596,12 +596,13 @@ static int can_remove_package(pmdb_t *db, pmpkg_t *pkg, alpm_list_t *targets,
* @brief Adds unneeded dependencies to an existing list of packages.
* By unneeded, we mean dependencies that are only required by packages in the
* target list, so they can be safely removed.
+ * If the input list was topo sorted, the output list will be topo sorted too.
*
* @param db package database to do dependency tracing in
* @param *targs pointer to a list of packages
* @param include_explicit if 0, explicitly installed packages are not included
*/
-void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit)
+void _alpm_recursedeps(pmdb_t *db, alpm_list_t *targs, int include_explicit)
{
alpm_list_t *i, *j, *k;
@@ -611,34 +612,24 @@ void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit)
return;
}
- /* TODO: the while loop should be removed if we can assume
- * that alpm_list_add (or another function) adds to the end of the list,
- * and that the target list is topo sorted (by _alpm_sortbydeps()).
- */
- int ready = 0;
- while(!ready) {
- ready = 1;
- for(i = *targs; i; i = i->next) {
- pmpkg_t *pkg = i->data;
- for(j = alpm_pkg_get_depends(pkg); j; j = j->next) {
- pmdepend_t *depend = alpm_splitdep(j->data);
- if(depend == NULL) {
- continue;
- }
- for(k = _alpm_db_get_pkgcache(db); k; k = k->next) {
- pmpkg_t *deppkg = k->data;
- if(alpm_depcmp(deppkg,depend)
- && can_remove_package(db, deppkg, *targs, include_explicit)) {
- _alpm_log(PM_LOG_DEBUG, "adding '%s' to the targets\n",
- alpm_pkg_get_name(deppkg));
-
+ for(i = targs; i; i = i->next) {
+ pmpkg_t *pkg = i->data;
+ for(j = alpm_pkg_get_depends(pkg); j; j = j->next) {
+ pmdepend_t *depend = alpm_splitdep(j->data);
+ if(depend == NULL) {
+ continue;
+ }
+ for(k = _alpm_db_get_pkgcache(db); k; k = k->next) {
+ pmpkg_t *deppkg = k->data;
+ if(alpm_depcmp(deppkg,depend)
+ && can_remove_package(db, deppkg, targs, include_explicit)) {
+ _alpm_log(PM_LOG_DEBUG, "adding '%s' to the targets\n",
+ alpm_pkg_get_name(deppkg));
/* add it to the target list */
- *targs = alpm_list_add(*targs, _alpm_pkg_dup(deppkg));
- ready = 0;
- }
+ targs = alpm_list_add(targs, _alpm_pkg_dup(deppkg));
}
- FREE(depend);
}
+ FREE(depend);
}
}
}
diff --git a/lib/libalpm/deps.h b/lib/libalpm/deps.h
index 59b26307..f11a8d88 100644
--- a/lib/libalpm/deps.h
+++ b/lib/libalpm/deps.h
@@ -58,7 +58,7 @@ int _alpm_depmiss_isin(pmdepmissing_t *needle, alpm_list_t *haystack);
alpm_list_t *_alpm_sortbydeps(alpm_list_t *targets, pmtranstype_t mode);
alpm_list_t *_alpm_checkdeps(pmdb_t *db, pmtranstype_t op,
alpm_list_t *packages);
-void _alpm_recursedeps(pmdb_t *db, alpm_list_t **targs, int include_explicit);
+void _alpm_recursedeps(pmdb_t *db, alpm_list_t *targs, int include_explicit);
int _alpm_resolvedeps(pmdb_t *local, alpm_list_t *dbs_sync, pmpkg_t *syncpkg,
alpm_list_t **list, pmtrans_t *trans, alpm_list_t **data);
diff --git a/lib/libalpm/remove.c b/lib/libalpm/remove.c
index c4e44398..86cfee68 100644
--- a/lib/libalpm/remove.c
+++ b/lib/libalpm/remove.c
@@ -137,11 +137,6 @@ int _alpm_remove_prepare(pmtrans_t *trans, pmdb_t *db, alpm_list_t **data)
}
}
- if(trans->flags & PM_TRANS_FLAG_RECURSE) {
- _alpm_log(PM_LOG_DEBUG, "finding removable dependencies\n");
- _alpm_recursedeps(db, &trans->packages, 0);
- }
-
/* re-order w.r.t. dependencies */
_alpm_log(PM_LOG_DEBUG, "sorting by dependencies\n");
lp = _alpm_sortbydeps(trans->packages, PM_TRANS_TYPE_REMOVE);
@@ -149,6 +144,11 @@ int _alpm_remove_prepare(pmtrans_t *trans, pmdb_t *db, alpm_list_t **data)
alpm_list_free(trans->packages);
trans->packages = lp;
+ if(trans->flags & PM_TRANS_FLAG_RECURSE) {
+ _alpm_log(PM_LOG_DEBUG, "finding removable dependencies\n");
+ _alpm_recursedeps(db, trans->packages, 0);
+ }
+
EVENT(trans, PM_TRANS_EVT_CHECKDEPS_DONE, NULL, NULL);
return(0);