From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49884) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2oVc-0001cp-FD for qemu-devel@nongnu.org; Fri, 26 Jul 2013 16:21:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1V2oVb-0007tc-Ks for qemu-devel@nongnu.org; Fri, 26 Jul 2013 16:21:04 -0400 Received: from mx1.redhat.com ([209.132.183.28]:59524) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1V2oVb-0007tM-Dt for qemu-devel@nongnu.org; Fri, 26 Jul 2013 16:21:03 -0400 From: Kevin Wolf Date: Fri, 26 Jul 2013 22:20:30 +0200 Message-Id: <1374870032-31672-17-git-send-email-kwolf@redhat.com> In-Reply-To: <1374870032-31672-1-git-send-email-kwolf@redhat.com> References: <1374870032-31672-1-git-send-email-kwolf@redhat.com> Subject: [Qemu-devel] [PULL 16/18] Implement qdict_flatten() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: anthony@codemonkey.ws Cc: kwolf@redhat.com, qemu-devel@nongnu.org qdict_flatten(): For each nested QDict with key x, all fields with key y are moved to this QDict and their key is renamed to "x.y". This operation is applied recursively for nested QDicts. Signed-off-by: Kevin Wolf Reviewed-by: Eric Blake --- include/qapi/qmp/qdict.h | 1 + qobject/qdict.c | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 52 insertions(+) diff --git a/include/qapi/qmp/qdict.h b/include/qapi/qmp/qdict.h index 685b2e3..d6855d1 100644 --- a/include/qapi/qmp/qdict.h +++ b/include/qapi/qmp/qdict.h @@ -65,5 +65,6 @@ int qdict_get_try_bool(const QDict *qdict, const char *key, int def_value); const char *qdict_get_try_str(const QDict *qdict, const char *key); QDict *qdict_clone_shallow(const QDict *src); +void qdict_flatten(QDict *qdict); #endif /* QDICT_H */ diff --git a/qobject/qdict.c b/qobject/qdict.c index ed381f9..472f106 100644 --- a/qobject/qdict.c +++ b/qobject/qdict.c @@ -476,3 +476,54 @@ static void qdict_destroy_obj(QObject *obj) g_free(qdict); } + +static void qdict_do_flatten(QDict *qdict, QDict *target, const char *prefix) +{ + QObject *value; + const QDictEntry *entry, *next; + const char *new_key; + bool delete; + + entry = qdict_first(qdict); + + while (entry != NULL) { + + next = qdict_next(qdict, entry); + value = qdict_entry_value(entry); + new_key = NULL; + delete = false; + + if (prefix) { + qobject_incref(value); + new_key = g_strdup_printf("%s.%s", prefix, entry->key); + qdict_put_obj(target, new_key, value); + delete = true; + } + + if (qobject_type(value) == QTYPE_QDICT) { + qdict_do_flatten(qobject_to_qdict(value), target, + new_key ? new_key : entry->key); + delete = true; + } + + if (delete) { + qdict_del(qdict, entry->key); + + /* Restart loop after modifying the iterated QDict */ + entry = qdict_first(qdict); + continue; + } + + entry = next; + } +} + +/** + * qdict_flatten(): For each nested QDict with key x, all fields with key y + * are moved to this QDict and their key is renamed to "x.y". This operation + * is applied recursively for nested QDicts. + */ +void qdict_flatten(QDict *qdict) +{ + qdict_do_flatten(qdict, qdict, NULL); +} -- 1.8.1.4