From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 30 Jun 2021 15:43:05 +0000 (+0000)
Subject: package: Add function that returns all packages that depend on this one
X-Git-Tag: 0.9.28~1150
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1d77c573dc7059e22701e16ae34b55082255da5;p=pakfire.git

package: Add function that returns all packages that depend on this one

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/_pakfire/package.c b/src/_pakfire/package.c
index adb4746c0..d3ea4bef4 100644
--- a/src/_pakfire/package.c
+++ b/src/_pakfire/package.c
@@ -29,6 +29,7 @@
 #include "package.h"
 #include "pakfire.h"
 #include "repo.h"
+#include "util.h"
 
 PyObject* new_package(PyTypeObject* type, PakfirePackage pkg) {
 	PackageObject* self = (PackageObject *)type->tp_alloc(type, 0);
@@ -507,6 +508,21 @@ static PyObject* Package_get_suggests(PackageObject* self) {
 	return list;
 }
 
+static PyObject* Package_get_reverse_requires(PackageObject* self) {
+	struct pakfire_packagelist* list = NULL;
+
+	int r = pakfire_package_get_reverse_requires(self->package, &list);
+	if (r) {
+		PyErr_SetFromErrno(PyExc_OSError);
+		return NULL;
+	}
+
+	PyObject* object = PyList_FromPackageList(list);
+	pakfire_packagelist_unref(list);
+
+	return object;
+}
+
 static PyObject* Package_get_filelist(PackageObject* self, PyObject* args) {
 	PyObject* list = PyList_New(0);
 	if (list == NULL)
@@ -822,6 +838,13 @@ static struct PyGetSetDef Package_getsetters[] = {
 		NULL,
 		NULL
 	},
+	{
+		"reverse_requires",
+		(getter)Package_get_reverse_requires,
+		NULL,
+		NULL,
+		NULL
+	},
 
 	// Repository
 	{
diff --git a/src/libpakfire/include/pakfire/package.h b/src/libpakfire/include/pakfire/package.h
index 36304a2a5..8eaf12d3a 100644
--- a/src/libpakfire/include/pakfire/package.h
+++ b/src/libpakfire/include/pakfire/package.h
@@ -24,6 +24,7 @@
 #include <time.h>
 
 #include <pakfire/filelist.h>
+#include <pakfire/packagelist.h>
 #include <pakfire/types.h>
 
 PakfirePackage pakfire_package_create(Pakfire pakfire, PakfireRepo repo,
@@ -92,6 +93,9 @@ char** pakfire_package_get_suggests(PakfirePackage pkg);
 char** pakfire_package_get_supplements(PakfirePackage pkg);
 char** pakfire_package_get_enhances(PakfirePackage pkg);
 
+int pakfire_package_get_reverse_requires(PakfirePackage pkg,
+	struct pakfire_packagelist** list);
+
 PakfireRepo pakfire_package_get_repo(PakfirePackage pkg);
 
 char* pakfire_package_dump(PakfirePackage pkg, int flags);
diff --git a/src/libpakfire/libpakfire.sym b/src/libpakfire/libpakfire.sym
index 9b1e426ac..75b9d17ec 100644
--- a/src/libpakfire/libpakfire.sym
+++ b/src/libpakfire/libpakfire.sym
@@ -166,6 +166,7 @@ global:
 	pakfire_package_get_recommends;
 	pakfire_package_get_repo;
 	pakfire_package_get_requires;
+	pakfire_package_get_reverse_requires;
 	pakfire_package_get_size;
 	pakfire_package_get_suggests;
 	pakfire_package_get_summary;
diff --git a/src/libpakfire/package.c b/src/libpakfire/package.c
index 30071f87b..9a59731ce 100644
--- a/src/libpakfire/package.c
+++ b/src/libpakfire/package.c
@@ -734,6 +734,30 @@ void pakfire_package_add_enhances(PakfirePackage pkg, const char* dep) {
 	pakfire_package_add_dep(pkg, SOLVABLE_ENHANCES, dep, 0);
 }
 
+PAKFIRE_EXPORT int pakfire_package_get_reverse_requires(PakfirePackage pkg,
+		struct pakfire_packagelist** list) {
+	Queue matches;
+	queue_init(&matches);
+
+	// Reset pointer
+	*list = NULL;
+
+	Pool* pool = pakfire_get_solv_pool(pkg->pakfire);
+
+	// Search for any matches
+	pool_whatmatchessolvable(pool, SOLVABLE_REQUIRES, pkg->id, &matches, 0);
+
+	// Create a new package list
+	int r = pakfire_packagelist_create_from_queue(list, pkg->pakfire, &matches);
+	if (r)
+		goto ERROR;
+
+ERROR:
+	queue_free(&matches);
+
+	return r;
+}
+
 PAKFIRE_EXPORT PakfireRepo pakfire_package_get_repo(PakfirePackage pkg) {
 	if (!pkg->repo) {
 		Solvable* s = get_solvable(pkg);