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Wed, 25 Mar 2020 07:12:28 +0000 (UTC) Received: from mail-m24147.qiye.163.com (mail-m24147.qiye.163.com [220.194.24.147]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-114-xGyCQ6wwMeiy8KUqG8Tdsg-1; Wed, 25 Mar 2020 03:12:24 -0400 Received: from localhost.localdomain (unknown [123.232.151.103]) by smtp4 (Coremail) with SMTP id JedpCgD3ftNNBHtey+koAw--.408S5; Wed, 25 Mar 2020 15:12:20 +0800 (CST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1585120366; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=zsJq8eL9htG3fEayY+K35Zqh6M5xGGl9da5dhbq3VFg=; b=hapAJr5hQZlfoa8OXXY30cTezrPH39hypwx2oaO86nAFY6Zy45FpDjNkVplEoxW8P0HgaJ Us+vqT+dLHsxma1CZGSlDayCsS6tB/4sCkpv7KcObs9UlWveQuYRBsY1Ghf/0S4udmIXGJ ZBfTJcv0wFTyHHQBTyt7fdoX7LCRxcE= X-MC-Unique: 43QUeJiHOwKAqudkj6oReg-1 X-MC-Unique: xGyCQ6wwMeiy8KUqG8Tdsg-1 From: Shi Lei To: libvir-list@redhat.com Subject: [RFC 03/29] util: Add two helper functions virXMLChildNode and virXMLChildNodeSet Date: Wed, 25 Mar 2020 15:11:43 +0800 Message-Id: <20200325071209.20841-4-shi_lei@massclouds.com> In-Reply-To: <20200325071209.20841-1-shi_lei@massclouds.com> References: <20200325071209.20841-1-shi_lei@massclouds.com> X-CM-TRANSID: JedpCgD3ftNNBHtey+koAw--.408S5 X-Coremail-Antispam: 1Uf129KBjvJXoWxCF4kGF1UJry7AF1kXFW7twb_yoW5Xr15pr ZxKr1Fvrn5J34fCwsagr1fWFs8Zr4SqrZ8Ww13Wry8Ar4fXrs5Gr4fZF12ga4UArWxWr1j qF4YgF1rWFW0yFJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0piv38rUUUUU= X-Originating-IP: [123.232.151.103] X-CM-SenderInfo: pvklsz1hl6ztxvvfz0xxgvhudrp/1tbiUBTxT1f4pyYAsAAAsk X-Scanned-By: MIMEDefang 2.78 on 10.11.54.4 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 02P7CTkK023870 X-loop: libvir-list@redhat.com X-BeenThere: libvir-list@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: Development discussions about the libvirt library & tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: libvir-list-bounces@redhat.com Errors-To: libvir-list-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 2 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @redhat.com) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" When directive property 'args.noctxt" is set, there's no 'ctxt' argument for the parse function. So RNG2C uses virXMLChildNode, virXMLChildNodeSet and virXMLPropString to construct implementation of the parse function. Signed-off-by: Shi Lei --- src/util/virxml.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++ src/util/virxml.h | 3 +++ 2 files changed, 60 insertions(+) diff --git a/src/util/virxml.c b/src/util/virxml.c index 9ea7b99..bfaed58 100644 --- a/src/util/virxml.c +++ b/src/util/virxml.c @@ -502,6 +502,63 @@ virXMLCheckIllegalChars(const char *nodeName, } =20 =20 +/** + * virXMLChildNode: + * @node: Parent XML dom node pointer + * @name: Name of the child element + * + * Convenience function to return the child element of a XML node. + * + * Returns the pointer of child element node or NULL in case of failure. + * If there are many nodes match condition, it only returns the first node. + */ +xmlNodePtr +virXMLChildNode(xmlNodePtr node, const char *name) +{ + xmlNodePtr cur =3D node->children; + while (cur) { + if (cur->type =3D=3D XML_ELEMENT_NODE && virXMLNodeNameEqual(cur, = name)) + return cur; + cur =3D cur->next; + } + return NULL; +} + + +/** + * virXMLChildNodeSet: + * @node: Parent XML dom node pointer + * @name: Name of the children element + * @list: the returned list of nodes (or NULL if only count matters) + * + * Convenience function to evaluate a set of children elements + * + * Returns the number of nodes found in which case @list is set (and + * must be freed) or -1 if the evaluation failed. + */ +int +virXMLChildNodeSet(xmlNodePtr node, const char *name, xmlNodePtr **list) +{ + size_t count =3D 0; + if (list !=3D NULL) + *list =3D NULL; + + xmlNodePtr cur =3D node->children; + while (cur) { + if (cur->type =3D=3D XML_ELEMENT_NODE && virXMLNodeNameEqual(cur, = name)) { + if (list !=3D NULL) { + if (VIR_APPEND_ELEMENT_COPY(*list, count, cur) < 0) + return -1; + } else { + count++; + } + } + cur =3D cur->next; + } + return count; +} + + /** * virXMLPropString: * @node: XML dom node pointer diff --git a/src/util/virxml.h b/src/util/virxml.h index 26ab9f9..0abde44 100644 --- a/src/util/virxml.h +++ b/src/util/virxml.h @@ -79,6 +79,9 @@ char * virXMLPropStringLimit(xmlNodePtr node, char * virXMLNodeContentString(xmlNodePtr node); long virXMLChildElementCount(xmlNodePtr node); =20 +xmlNodePtr virXMLChildNode(xmlNodePtr node, const char *name); +int virXMLChildNodeSet(xmlNodePtr node, const char *name, xmlNodePtr **lis= t); + /* Internal function; prefer the macros below. */ xmlDocPtr virXMLParseHelper(int domcode, const char *filename, --=20 2.17.1