New autoremove command (currently only list files to be autoremoved

libpkg/pkg.h

@@ -431,6 +431,7 @@ struct pkgdb_it * pkgdb_query(struct pkgdb *db, const char *pattern,
  */
 struct pkgdb_it *pkgdb_query_upgrades(struct pkgdb *db);
 struct pkgdb_it *pkgdb_query_downgrades(struct pkgdb *db);
+struct pkgdb_it *pkgdb_query_autoremove(struct pkgdb *db);
 
 /**
  * @todo Return directly the struct pkg?

libpkg/pkgdb.c

@@ -1334,3 +1334,23 @@ pkgdb_query_downgrades(struct pkgdb *db)
 
 	return (pkgdb_it_new(db, stmt, IT_UPGRADE));
 }
+
+struct pkgdb_it *
+pkgdb_query_autoremove(struct pkgdb *db)
+{
+	sqlite3_stmt *stmt;
+
+	const char sql[] = ""
+		"SELECT id, origin, name, version, comment, desc, "
+		"message, arch, osversion, maintainer, www, prefix, "
+		"flatsize FROM packages WHERE automatic=1 AND "
+		"(SELECT deps.origin FROM deps where deps.origin = packages.origin) "
+		"IS NULL";
+
+	if (sqlite3_prepare_v2(db->sqlite, sql, -1, &stmt, NULL) != SQLITE_OK) {
+		ERROR_SQLITE(db->sqlite);
+		return (NULL);
+	}
+
+	return (pkgdb_it_new(db, stmt, IT_LOCAL));
+}

pkg/Makefile

@@ -1,5 +1,6 @@
 PROG=		pkg
 SRCS=		add.c \
+		autoremove.c \
 		create.c \
 		delete.c \
 		info.c \

pkg/autoremove.c

@@ -0,0 +1,79 @@
+#include <sys/param.h>
+#include <sys/types.h>
+
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sysexits.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <libutil.h>
+
+#include <pkg.h>
+
+#include "autoremove.h"
+
+void
+usage_autoremove(void)
+{
+	fprintf(stderr, "usage pkg autoremove\n\n");
+	fprintf(stderr, "For more information see 'pkg help autoremove'.\n");
+}
+
+int
+exec_autoremove(int argc, char **argv)
+{
+	struct pkgdb *db = NULL;
+	struct pkgdb_it *it;
+	struct pkg *pkg = NULL;
+	int retcode = 0;
+	int64_t oldsize = 0, newsize = 0;
+	char size[7];
+
+	(void) argv;
+	if (argc != 1) {
+		usage_autoremove();
+		return (-1);
+	}
+
+	if (geteuid() != 0) {
+		warnx("autoremove can only be done as root");
+		return (EX_NOPERM);
+	}
+
+	if (pkgdb_open(&db, PKGDB_DEFAULT) != EPKG_OK) {
+		pkg_error_warn("can not open database");
+		return (1);
+	}
+
+	if ((it = pkgdb_query_autoremove(db)) == NULL) {
+		pkg_error_warn("can not query database");
+		goto cleanup;
+	}
+
+	printf("Packages to be autoremoved: \n");
+	while ((retcode = pkgdb_it_next(it, &pkg, PKG_LOAD_BASIC)) == EPKG_OK) {
+		oldsize += pkg_flatsize(pkg);
+		newsize += pkg_new_flatsize(pkg);
+		printf("\t%s-%s\n", pkg_get(pkg, PKG_NAME), pkg_get(pkg, PKG_VERSION));
+	}
+	printf("\n");
+	pkgdb_it_free(it);
+
+	if (oldsize > newsize) {
+		newsize *= -1;
+		humanize_number(size, sizeof(size), oldsize - newsize, "B", HN_AUTOSCALE, 0);
+		printf("the autoremove will save %s\n", size);
+	} else {
+		humanize_number(size, sizeof(size), newsize - oldsize, "B", HN_AUTOSCALE, 0);
+		printf("the autoremove will require %s more space\n", size);
+	}
+
+	cleanup:
+
+	if (db != NULL)
+		pkgdb_close(db);
+
+	return (retcode);
+}

pkg/autoremove.h

@@ -0,0 +1,7 @@
+#ifndef _AUTOREMOVE_H
+#define _AUTOREMOVE_H
+
+int exec_autoremove(int, char **);
+void usage_autoremove(void);
+#endif
+

pkg/main.c

@@ -10,6 +10,7 @@
 #include "info.h"
 #include "which.h"
 #include "add.h"
+#include "autoremove.h"
 #include "version.h"
 #include "update.h"
 #include "upgrade.h"
@@ -26,6 +27,7 @@ static struct commands {
 	void (* const usage)(void);
 } cmd[] = {
 	{ "add", exec_add, usage_add},
+	{ "autoremove", exec_autoremove, usage_autoremove},
 	{ "create", exec_create, usage_create},
 	{ "delete", exec_delete, usage_delete},
 	{ "help", exec_help, usage_help},