RapidXML使用print报错及解决(报错： ‘print_children‘ was not declared in this scope...)

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于 2024-07-25 11:44:29 发布

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文章标签： c++ xml

本文链接：https://blog.youkuaiyun.com/m0_64490070/article/details/140685673

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当我想要获取上述stroke整个元素的时候，如我想要将其作为整个作为值，保存在string中时，需要用到rapidxml::print(std::back_inserter(polygonXml), *polygon, 0);

编译时会报错：error: 'print_children' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation [-fpermissive]
115 | out = print_children(out, node, flags, indent);

解决方法：创建文件rapidxml_ext.hpp并填入以下内容：

#pragma once

#include "rapidxml.hpp"

// Adding declarations to make it compatible with gcc 4.7 and greater
// See https://stackoverflow.com/a/55408678
namespace rapidxml {
    namespace internal {
        template <class OutIt, class Ch>
        inline OutIt print_children(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_attributes(OutIt out, const xml_node<Ch>* node, int flags);

        template <class OutIt, class Ch>
        inline OutIt print_data_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_cdata_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_element_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_declaration_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_comment_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_doctype_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);

        template <class OutIt, class Ch>
        inline OutIt print_pi_node(OutIt out, const xml_node<Ch>* node, int flags, int indent);
    }
}

#include "rapidxml_print.hpp"

最后将该添加到自己的头文件中即可解决该报错。