内部的libxml和输出编码 [英] LibXML internal and output encodings

问题描述

我试图写在ISO-8859-1 libxml2的XML文件。
但是从文档似乎为我创造我将不得不转换为UTF-8这是的libxml的内部编码每个文本节点。然后，当调用xmlSaveFor​​matFileEnc（）的libxml转换为目标编码，并将该编码属性的文档

I'm trying to write XML files with libxml2 in ISO-8859-1. But from the documentation it seems that for each text node that I create I'll have to convert to UTF-8 which is libxml's internal encoding. Then when calling xmlSaveFormatFileEnc() libxml converts to the target encoding and adds the encoding attribute to the document.

这是假设是正确的？
现在我的code去大致是这样的：

Is this assumption correct? For now my code goes roughly like this:


    的xmlNode * root_element = NULL，*节点4 = NULL;
    xmlDoc中* DOC = NULL;

xmlNode *root_element = NULL, *node4 = NULL; xmlDoc *doc = NULL;

doc = xmlNewDoc(BAD_CAST XML_DEFAULT_VERSION);
root_element = xmlNewDocNode(doc, NULL, BAD_CAST("root"),
                    NULL);
char * input_str = getLatin1Data();
isolat1ToUTF8(utf8_str, &file_size, input_str, &inlen);

node4 = xmlNewCDataBlock(doc, BAD_CAST list_content, xmlStrlen(BAD_CAST utf8_str));

xmlAddChild(root_element, node4);
xmlSaveFormatFileEnc("test_file.xml", doc, "UTF-8", 1);
xmlFreeDoc(doc);

推荐答案

您的假设是正确的。当 XMLCHAR 预计，像 xmlNewCDataBlock ， xmlNewText ，它始终是UTF-8：

Your assumption is right. When xmlChar is expected, like in xmlNewCDataBlock, xmlNewText, it is always UTF-8:

从包含/的libxml / xmlstring.h （libxml的2.8.0）：

From include/libxml/xmlstring.h (libxml 2.8.0):

/**
 * xmlChar:
 *
 * This is a basic byte in an UTF-8 encoded string.
 * It's unsigned allowing to pinpoint case where char * are assigned
 * to xmlChar * (possibly making serialization back impossible).
 */

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