如何获取xmlHashTable的钥匙？ （libxml2的） [英] how to get the keys of a xmlHashTable ? (libxml2)

问题描述

我使用的libxml2库解析XML文档。然后，我在这个图书馆看到 xmlHashTable 。是否有可能得到的所有键 xmlHashTable ？我想存储阵列中的所有关键点。

I am using the library libxml2 to parse an XML document. And then I saw xmlHashTable in this library. Is it possible to get all the keys of a xmlHashTable? I want to store all the keys in an array.

XML文档：

<?xml version="1.0" encoding="UTF-8"?>

<?type-proto key="MIPRegistrationRequest" value="mip" ?>
<?avp-proto key="Example-AVP" value="data" ?>

<!DOCTYPE dictionary SYSTEM "dictionary.dtd" [
    <!-- Any files added here need to be added to Makefile.am and
         packaging/nsis/wireshark.nsi -->

    <!ENTITY nasreq         SYSTEM "nasreq.xml">
    <!ENTITY eap            SYSTEM "eap.xml">
    <!ENTITY mobileipv4     SYSTEM "mobileipv4.xml">
    <!ENTITY chargecontrol      SYSTEM "chargecontrol.xml">
    <!ENTITY sunping        SYSTEM "sunping.xml">
    <!ENTITY TGPP           SYSTEM "TGPP.xml">
    <!ENTITY TGPP2          SYSTEM "TGPP2.xml">
    <!ENTITY sip            SYSTEM "sip.xml">
    <!ENTITY etsie2e4       SYSTEM "etsie2e4.xml">
    <!ENTITY Ericsson       SYSTEM "Ericsson.xml">
    <!ENTITY mobileipv6     SYSTEM "mobileipv6.xml">
    <!ENTITY Cisco          SYSTEM "Cisco.xml">
    <!ENTITY Starent        SYSTEM "Starent.xml">
    <!ENTITY Vodafone       SYSTEM "Vodafone.xml">
    <!ENTITY AlcatelLucent      SYSTEM "AlcatelLucent.xml">
    <!ENTITY Nokia          SYSTEM "Nokia.xml">
    <!ENTITY NokiaSolutionsAndNetworks  SYSTEM "NokiaSolutionsAndNetworks.xml">
    <!ENTITY HP         SYSTEM "HP.xml">
    <!ENTITY Oracle         SYSTEM "Oracle.xml">
    <!ENTITY Custom         SYSTEM "Custom.xml">
]>
<dictionary>
...
<dictionary>

结果
我试图让外部（解析）实体的所有键（如NASREQ，EAP等）：
结果

I am trying to get the all the keys of the external (parsed) entities (such as nasreq, eap etc):

ddict_t *ddict_scan(const char* system_directory, const char* filename) 
{

    char *path = g_strconcat((const gchar*) system_directory, (const gchar*)filename, (const gchar *)'\0');
    xmlDocPtr p1 = getdoc((const char *)path);
    xmlEntitiesTablePtr ptr2 = p1->intSubset->entities;
    //to be added
}

类型 xmlEntitiesTable 的是 xmlHashTable 。

推荐答案

有是 xmlHashScan （）函数（及其挑剔亲属），它可用于具有用户提供的 xmlHashScanner 函数调用回由库在 xmlHashTable 每个条目。在 xmlHashScanner 给出名称每个条目作为参数，所以它应该是易于组装的所有列表键的方式。

There is the xmlHashScan() function (and its pickier relatives), which can be used to have a user-provided xmlHashScanner function called back by the library for each entry in the xmlHashTable. The xmlHashScanner is given the name of each entry as parameter, so it should be easy to assemble a list of all the keys that way.

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