del: add '-r' to remove top-level dependencies recursively

and by default just update the world, and dump a lost of packages
that are not removed. fixes #47.

src/apk_defines.h

@@ -62,6 +62,7 @@ extern unsigned int apk_flags;
 #define APK_ALLOW_UNTRUSTED	0x0100
 #define APK_PURGE		0x0200
 #define APK_INTERACTIVE		0x0400
+#define APK_RECURSIVE_DELETE	0x0800
 
 #define apk_error(args...)	do { apk_log("ERROR: ", args); } while (0)
 #define apk_warning(args...)	do { if (apk_verbosity > 0) { apk_log("WARNING: ", args); } } while (0)

src/del.c

@@ -14,6 +14,18 @@
 #include "apk_state.h"
 #include "apk_database.h"
 
+static int del_parse(void *ctx, int optch, int optindex, const char *optarg)
+{
+	switch (optch) {
+	case 'r':
+		apk_flags |= APK_RECURSIVE_DELETE;
+		break;
+	default:
+		return -1;
+	}
+	return 0;
+}
+
 static int del_main(void *ctx, int argc, char **argv)
 {
 	struct apk_database db;
@@ -58,10 +70,18 @@ out:
 	return r;
 }
 
+static struct apk_option del_options[] = {
+	{ 'r', "rdepends",	"Recursively delete all top-level reverse "
+				"dependencies too." },
+};
+
 static struct apk_applet apk_del = {
 	.name = "del",
 	.help = "Remove PACKAGEs from the main dependencies and uninstall them.",
 	.arguments = "PACKAGE...",
+	.num_options = ARRAY_SIZE(del_options),
+	.options = del_options,
+	.parse = del_parse,
 	.main = del_main,
 };
 

src/state.c

@@ -406,14 +406,6 @@ int apk_state_lock_name(struct apk_state *state,
 	if (name->id >= state->num_names)
 		return -1;
 
-	if (newpkg == NULL &&
-	    (name->flags & APK_NAME_TOPLEVEL) &&
-	    !(apk_flags & APK_FORCE)) {
-		apk_error("Not deleting top level dependency '%s'. "
-			  "Use -f to override.", name->name);
-		return -1;
-	}
-
 	ns_free(state->name[name->id]);
 	state->name[name->id] = ns_from_pkg(newpkg);
 
@@ -651,14 +643,17 @@ int apk_state_commit(struct apk_state *state,
 {
 	struct progress prog;
 	struct apk_change *change;
-	int size_diff = 0;
-	int r;
+	int r = 0, size_diff = 0, toplevel = FALSE, deleteonly = TRUE;
 
 	/* Count what needs to be done */
 	memset(&prog, 0, sizeof(prog));
 	list_for_each_entry(change, &state->change_list_head, change_list) {
-		if (change->newpkg == NULL)
+		if (change->newpkg == NULL) {
 			apk_state_autoclean(state, change->oldpkg);
+			if (change->oldpkg->name->flags & APK_NAME_TOPLEVEL)
+				toplevel = TRUE;
+		} else
+			deleteonly = FALSE;
 		apk_count_change(change, &prog.total);
 		if (change->newpkg)
 			size_diff += change->newpkg->installed_size;
@@ -667,6 +662,17 @@ int apk_state_commit(struct apk_state *state,
 	}
 	size_diff /= 1024;
 
+	if (toplevel &&
+	    (apk_flags & (APK_INTERACTIVE | APK_RECURSIVE_DELETE)) == 0) {
+		if (!deleteonly)
+			return -1;
+
+		dump_packages(state, cmp_remove,
+			      "The top-level dependencies have been updated "
+			      "but the following packages are not removed");
+		goto update_state;
+	}
+
 	if (apk_verbosity > 1 || (apk_flags & APK_INTERACTIVE)) {
 		r = dump_packages(state, cmp_remove,
 				  "The following packages will be REMOVED");
@@ -704,6 +710,13 @@ int apk_state_commit(struct apk_state *state,
 					       &prog);
 			if (r != 0)
 				break;
+
+			if (change->oldpkg != NULL &&
+			    change->newpkg == NULL &&
+			    change->oldpkg->name->flags & APK_NAME_TOPLEVEL) {
+				change->oldpkg->name->flags &= ~APK_NAME_TOPLEVEL;
+				apk_deps_del(&db->world, change->oldpkg->name);
+			}
 		}
 
 		apk_count_change(change, &prog.done);
@@ -711,6 +724,7 @@ int apk_state_commit(struct apk_state *state,
 	if (apk_flags & APK_PROGRESS)
 		apk_draw_progress(20, 1);
 
+update_state:
 	if (!(apk_flags & APK_SIMULATE))
 		apk_db_write_config(db);