Move the deptest code from frontend to backend.

The deptest code (pacman -T) used by makepkg was mostly in the frontend.
There were 2 drawbacks:
1) the public splitdep function returns a pmdepend_t struct, but the
_alpm_dep_free function for freeing it is private. So there was a memleak.
2) there is a helper in the backend (satisfycmp in deps.c) which makes this
function much easier.

So this adds a new public alpm_deptest in libalpm/deps.c, which cleans
pacman_deptest in pacman/deptest.c a lot.
Besides, alpm_splitdep was made private, because the frontend no longer
requires it, and _alpm_dep_free is also private.
Finally the deptest001 pactest was extended.

Signed-off-by: Chantry Xavier <shiningxc@gmail.com>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 26 insertions, 1 deletions

diff --git a/lib/libalpm/deps.c b/lib/libalpm/deps.c
index 12da6b09..163b22ba 100644
--- a/lib/libalpm/deps.c
+++ b/lib/libalpm/deps.c
@@ -226,6 +226,31 @@ static int satisfycmp(const void *pkg, const void *depend)
 /** Checks dependencies and returns missing ones in a list.
  * Dependencies can include versions with depmod operators.
  * @param db pointer to the local package database
+ * @param targets an alpm_list_t* of dependencies strings to satisfy
+ * @return an alpm_list_t* of missing dependencies strings
+ */
+alpm_list_t SYMEXPORT *alpm_deptest(pmdb_t *db, alpm_list_t *targets)
+{
+	alpm_list_t *i, *ret = NULL;
+
+	for(i = targets; i; i = alpm_list_next(i)) {
+		pmdepend_t *dep;
+		char *target;
+
+		target = alpm_list_getdata(i);
+		dep = _alpm_splitdep(target);
+
+		if(!alpm_list_find(_alpm_db_get_pkgcache(db), dep, satisfycmp)) {
+			ret = alpm_list_add(ret, target);
+		}
+		_alpm_dep_free(dep);
+	}
+	return(ret);
+}
+
+/** Checks dependencies and returns missing ones in a list.
+ * Dependencies can include versions with depmod operators.
+ * @param db pointer to the local package database
  * @param reversedeps handles the backward dependencies
  * @param remove an alpm_list_t* of packages to be removed
  * @param upgrade an alpm_list_t* of packages to be upgraded (remove-then-upgrade)
@@ -364,7 +389,7 @@ int SYMEXPORT alpm_depcmp(pmpkg_t *pkg, pmdepend_t *dep)
 	return(satisfy);
 }
 
-pmdepend_t SYMEXPORT *alpm_splitdep(const char *depstring)
+pmdepend_t *_alpm_splitdep(const char *depstring)
 {
 	pmdepend_t *depend;
 	char *ptr = NULL;