Introduce -D, --database

The request of FS#12950 is implemented.

On the backend side, I introduced a new function, alpm_db_set_pkgreason(),
to modify the install reason of a package in the local database. On the
front-end side, I introduced a new main operation, -D/--database, which has
two options, --asdeps and --asexplicit. I documented this in pacman manual.
I've created two pactests to test -D: database001.py and database002.py.

Signed-off-by: Nagy Gabor <ngaba@bibl.u-szeged.hu>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 90 insertions, 0 deletions

diff --git a/src/pacman/database.c b/src/pacman/database.c
new file mode 100644
index 00000000..9e335fe1
--- /dev/null
+++ b/src/pacman/database.c
@@ -0,0 +1,90 @@
+/*
+ *  database.c
+ *
+ *  Copyright (c) 2006-2010 Pacman Development Team <pacman-dev@archlinux.org>
+ *  Copyright (c) 2002-2006 by Judd Vinet <jvinet@zeroflux.org>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+
+#include <alpm.h>
+#include <alpm_list.h>
+
+/* pacman */
+#include "pacman.h"
+#include "conf.h"
+#include "util.h"
+
+extern pmdb_t *db_local;
+
+/**
+ * @brief Modify the 'local' package database.
+ *
+ * @param targets a list of packages (as strings) to modify
+ *
+ * @return 0 on success, 1 on failure
+ */
+int pacman_database(alpm_list_t *targets)
+{
+	alpm_list_t *i;
+	int retval = 0;
+	pmpkgreason_t reason;
+
+	if(targets == NULL) {
+		pm_printf(PM_LOG_ERROR, _("no targets specified (use -h for help)\n"));
+		return(1);
+	}
+
+	if(config->flags & PM_TRANS_FLAG_ALLDEPS) { /* --asdeps */
+		reason = PM_PKG_REASON_DEPEND;
+	} else if(config->flags & PM_TRANS_FLAG_ALLEXPLICIT) { /* --asexplicit */
+		reason = PM_PKG_REASON_EXPLICIT;
+	} else {
+		pm_printf(PM_LOG_ERROR, _("no install reason specified (use -h for help)\n"));
+		return(1);
+	}
+
+	/* Lock database */
+	if(trans_init(0) == -1) {
+		return(1);
+	}
+
+	for(i = targets; i; i = alpm_list_next(i)) {
+		char *pkgname = i->data;
+		if(alpm_db_set_pkgreason(db_local, pkgname, reason) == -1) {
+			pm_printf(PM_LOG_ERROR, _("could not set install reason for package %s (%s)\n"),
+							pkgname, alpm_strerrorlast());
+			retval = 1;
+		} else {
+			if(reason == PM_PKG_REASON_DEPEND) {
+				printf(_("%s: install reason has been set to 'installed as dependency'\n"), pkgname);
+			} else {
+				printf(_("%s: install reason has been set to 'explicitly installed'\n"), pkgname);
+			}
+		}
+	}
+
+	/* Unlock database */
+	if(trans_release() == -1) {
+		return(1);
+	}
+	return(retval);
+}
+
+/* vim: set ts=2 sw=2 noet: */