用 libxml2 打印漂亮吗？

Question

使用 libxml2。我可以使用xmlSaveFormatFileEnc() 将 XML 漂亮地打印到文件中。但是有没有办法在文本字符串或流中做同样的事情？

我想避免将 XML 写出到文件中再读回，只是为了获得 XML 的漂亮打印版本。

为了记录，我现在正在做的事情如下：

xmlInitParser();
xmlKeepBlanksDefault(0);
xmlLineNumbersDefault(1);
xmlThrDefIndentTreeOutput(1);
xmlThrDefTreeIndentString("    ");

std::string content = "....."; // do something here to get the XML
xmlDoc * doc = xmlParseDoc((xmlChar*)content.c_str());

xmlSaveFormatFileEnc("output.xml", doc, "utf-8", 1); // pretty print

Answer 1

盗自here:

xmlBufferPtr buf;
/* Create a new XML buffer, to which the XML document will be
 * written */
buf = xmlBufferCreate();
if (buf == NULL) {
    std::cerr << "testXmlwriterMemory: Error creating the xml buffer" << std::endl;
    return;
}

/* Create a new XmlWriter for memory, with no compression.
 * Remark: there is no compression for this kind of xmlTextWriter */
writer = xmlNewTextWriterMemory(buf, 0);
if (writer == NULL) {
    std::cerr << "testXmlwriterMemory: Error creating the xml writer" << std::endl;
    return;
}

然后，在你写入缓冲区之后：

std::cout << buf->content << std::endl