Question

我有一个工作示例程序，它使用boost property_tree解析ini格式化数据。当我向键值对添加注释时，我得到了coredump。我在property_tree上搜索过任何评论修剪函数但找不到任何内容。

工作计划：

static std::string inidata =
R"(
    # comment

    [SECTION1]  
    key1 = 15
    key2=val        
)";

void read_data(std::istream &is)
{
    using boost::property_tree::ptree;

    ptree pt;

    read_ini(is, pt);

    boost::optional<uint32_t>    sect1_key1 = pt.get_optional<uint32_t>(ptree::path_type("SECTION1/key1", '/'));
    boost::optional<std::string> sect1_key2 = pt.get_optional<std::string>(ptree::path_type("SECTION1/key2", '/'));

    std::cout << "SECTION1.key1: " << *sect1_key1 << std::endl;
    std::cout << "SECTION1.key2: " << *sect1_key2 << std::endl;
}

评论附加配置：

static std::string inidata =
R"(
    # comment

    [SECTION1]  
    key1 = 15           # COMMENT ADDED!
    key2=val        
)";

核心转储输出：

/usr/local/include/boost/optional/optional.hpp:992: boost::optional<T>::reference_type boost::optional<T>::get() [with T = unsigned int; boost::optional<T>::reference_type = unsigned int&]: Assertion `this->is_initialized()' failed.
Aborted (core dumped)

Answer 1

评论样式** is not supported *。

您可以通过移动文本值的注释来看到这一点，结果是：

SECTION1.key1: 15
SECTION1.key2: val  # woah

测试人员显示#在第一个非空白列中实际上只是特殊的： Live On Coliru

#include <boost/property_tree/ini_parser.hpp>
#include <iostream>

static std::string inidata =
R"(
    # comment

    [SECTION1]  
    key1 = 15
    key2=val  # woah       
    k#ey3=whoops
)";

using boost::property_tree::ptree;

void read_data(std::istream &is)
{

    ptree pt;
    read_ini(is, pt);

    for (auto section : pt)
        for (auto key : section.second)
            std::cout << "DEBUG: " << key.first << "=" << key.second.get_value<std::string>() << "\n";
}

#include <sstream>

int main()
{
    std::istringstream iss(inidata);
    read_data(iss);
}

如果将任何注释附加到键值，则Boost属性树ini解析会出错

1 个答案: