From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6C90C433DB for ; Mon, 18 Jan 2021 16:38:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 609C9206F7 for ; Mon, 18 Jan 2021 16:38:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 609C9206F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:45488 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1l1XXm-0006aB-59 for qemu-devel@archiver.kernel.org; Mon, 18 Jan 2021 11:38:18 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:34908) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1l1XRH-0002LX-Qe for qemu-devel@nongnu.org; Mon, 18 Jan 2021 11:31:37 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:42253) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1l1XRE-0001UN-HR for qemu-devel@nongnu.org; Mon, 18 Jan 2021 11:31:35 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1610987492; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=TEAlKqwM+60ep7QN+s9ZMLJy18GtUzwQAfwiX+zsRjs=; b=JSlm6TQvy2Aqc2vWoZ1giPKHvW7MuI+iU8UCGjS34Ot4rnAiOlBUhmynVPH4iGDb2EF4dT 03UtBUjH/P+m/DpoNHTcyaQU1hrQr01u150CZY09ncV2N1Y7TR5pcsPl2YJwnR9EdkISLt al5J9Gor3vHqm7VdFOzq9B6MRnprdIo= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-6-KM21l27fPTyUahEtnicPCg-1; Mon, 18 Jan 2021 11:31:30 -0500 X-MC-Unique: KM21l27fPTyUahEtnicPCg-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 29D398066E8 for ; Mon, 18 Jan 2021 16:31:29 +0000 (UTC) Received: from virtlab701.virt.lab.eng.bos.redhat.com (virtlab701.virt.lab.eng.bos.redhat.com [10.19.152.228]) by smtp.corp.redhat.com (Postfix) with ESMTP id A651517B0B; Mon, 18 Jan 2021 16:31:28 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PATCH 07/25] keyval: introduce keyval_parse_into Date: Mon, 18 Jan 2021 11:30:55 -0500 Message-Id: <20210118163113.780171-8-pbonzini@redhat.com> In-Reply-To: <20210118163113.780171-1-pbonzini@redhat.com> References: <20210118163113.780171-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=pbonzini@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.175, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, imammedo@redhat.com, armbru@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Allow parsing multiple keyval sequences into the same dictionary. Signed-off-by: Paolo Bonzini --- include/qemu/option.h | 2 ++ util/keyval.c | 39 ++++++++++++++++++++++++++++++++------- 2 files changed, 34 insertions(+), 7 deletions(-) diff --git a/include/qemu/option.h b/include/qemu/option.h index f73e0dc7d9..092e291c37 100644 --- a/include/qemu/option.h +++ b/include/qemu/option.h @@ -147,6 +147,8 @@ void qemu_opts_print_help(QemuOptsList *list, bool print_caption); void qemu_opts_free(QemuOptsList *list); QemuOptsList *qemu_opts_append(QemuOptsList *dst, QemuOptsList *list); +QDict *keyval_parse_into(QDict *qdict, const char *params, const char *implied_key, + bool *p_help, Error **errp); QDict *keyval_parse(const char *params, const char *implied_key, bool *help, Error **errp); diff --git a/util/keyval.c b/util/keyval.c index e7f708cd1e..1d4ca12129 100644 --- a/util/keyval.c +++ b/util/keyval.c @@ -436,13 +436,12 @@ static QObject *keyval_listify(QDict *cur, GSList *key_of_cur, Error **errp) * If @p_help is not NULL, store whether help is requested there. * If @p_help is NULL and help is requested, fail. * - * On success, return a dictionary of the parsed keys and values. + * On success, return @dict, now filled with the parsed keys and values. * On failure, store an error through @errp and return NULL. */ -QDict *keyval_parse(const char *params, const char *implied_key, - bool *p_help, Error **errp) +QDict *keyval_parse_into(QDict *qdict, const char *params, const char *implied_key, + bool *p_help, Error **errp) { - QDict *qdict = qdict_new(); QObject *listified; g_autofree char *dup; char *s; @@ -452,7 +451,6 @@ QDict *keyval_parse(const char *params, const char *implied_key, while (*s) { s = keyval_parse_one(qdict, s, implied_key, &help, errp); if (!s) { - qobject_unref(qdict); return NULL; } implied_key = NULL; @@ -462,15 +460,42 @@ QDict *keyval_parse(const char *params, const char *implied_key, *p_help = help; } else if (help) { error_setg(errp, "Help is not available for this option"); - qobject_unref(qdict); return NULL; } listified = keyval_listify(qdict, NULL, errp); if (!listified) { - qobject_unref(qdict); return NULL; } assert(listified == QOBJECT(qdict)); return qdict; } + +/* + * Parse @params in QEMU's traditional KEY=VALUE,... syntax. + * + * If @implied_key, the first KEY= can be omitted. @implied_key is + * implied then, and VALUE can't be empty or contain ',' or '='. + * + * A parameter "help" or "?" without a value isn't added to the + * resulting dictionary, but instead is interpreted as help request. + * All other options are parsed and returned normally so that context + * specific help can be printed. + * + * If @p_help is not NULL, store whether help is requested there. + * If @p_help is NULL and help is requested, fail. + * + * On success, return a dictionary of the parsed keys and values. + * On failure, store an error through @errp and return NULL. + */ +QDict *keyval_parse(const char *params, const char *implied_key, + bool *p_help, Error **errp) +{ + QDict *qdict = qdict_new(); + QDict *ret = keyval_parse_into(qdict, params, implied_key, p_help, errp); + + if (!ret) { + qobject_unref(qdict); + } + return ret; +} -- 2.26.2