xbps-repo: add a sync target, to sync the pkg index file from a

remote repository.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20091031105740-xdqqsjqymc9rty5j

bin/xbps-repo/main.c

@@ -57,6 +57,7 @@ usage(void)
 	"    remove\t<URI>\n"
 	"    search\t<string>\n"
 	"    show\t<pkgname>\n"
+	"    sync\t\t<URI>\n"
 	" Options shared by all actions:\n"
 	"    -r\t\t<rootdir>\n"
 	"    -V\t\tPrints xbps release version\n"
@@ -309,6 +310,17 @@ main(int argc, char **argv)
 		if (rv != 0)
 			exit(rv);
 
+	} else if (strcasecmp(argv[0], "sync") == 0) {
+		/* Syncs the pkg index file from a remote repo */
+		if (argc != 2)
+			usage();
+
+		if (!sanitize_localpath(dpkgidx, argv[1]))
+			exit(EXIT_FAILURE);
+
+		printf("Updating package index from: %s\n", dpkgidx);
+		rv = xbps_sync_repository_pkg_index(dpkgidx);
+
 	} else {
 		usage();
 	}