policy: new applet

to show different versions of package and the repositories from
which it is available from.

1 files changed, 77 insertions, 0 deletions

diff --git a/src/policy.c b/src/policy.c
new file mode 100644
index 0000000..d3f171b
--- /dev/null
+++ b/src/policy.c
@@ -0,0 +1,77 @@
+/* policy.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2013 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include "apk_defines.h"
+#include "apk_applet.h"
+#include "apk_database.h"
+#include "apk_version.h"
+#include "apk_print.h"
+
+extern const char * const apk_installed_file;
+
+static void print_policy(struct apk_database *db, const char *match, struct apk_name *name, void *ctx)
+{
+	struct apk_provider *p;
+	struct apk_repository *repo;
+	int i, j, num = 0;
+/*
+zlib1g policy:
+  2.0:
+    @testing http://nl.alpinelinux.org/alpine/edge/testing
+  1.7:
+    @edge http://nl.alpinelinux.org/alpine/edge/main
+  1.2.3.5 (upgradeable):
+    http://nl.alpinelinux.org/alpine/v2.6/main
+  1.2.3.4 (installed):
+    /media/cdrom/...
+    http://nl.alpinelinux.org/alpine/v2.5/main
+  1.1:
+    http://nl.alpinelinux.org/alpine/v2.4/main
+*/
+	foreach_array_item(p, name->providers) {
+		if (p->pkg->name != name)
+			continue;
+		if (num++ == 0)
+			printf("%s policy:\n", name->name);
+		printf("  " BLOB_FMT ":\n", BLOB_PRINTF(*p->version));
+		if (p->pkg->ipkg != NULL)
+			printf("    %s\n", apk_installed_file);
+		for (i = 0; i < db->num_repos; i++) {
+			repo = &db->repos[i];
+			if (!(BIT(i) & p->pkg->repos))
+				continue;
+			for (j = 0; j < db->num_repo_tags; j++) {
+				if (db->repo_tags[j].allowed_repos & p->pkg->repos)
+					printf("    "BLOB_FMT"%s%s\n",
+						BLOB_PRINTF(db->repo_tags[j].tag),
+						j == 0 ? "" : " ",
+						repo->url);
+			}
+		}
+	}
+}
+
+static int policy_main(void *ctx, struct apk_database *db, struct apk_string_array *args)
+{
+	apk_name_foreach_matching(db, args, apk_foreach_genid(), print_policy, NULL);
+	return 0;
+}
+
+static struct apk_applet apk_policy = {
+	.name = "policy",
+	.help = "Show repository policy for packages.",
+	.open_flags = APK_OPENF_READ,
+	.main = policy_main,
+};
+
+APK_DEFINE_APPLET(apk_policy);
+
+