使用C ++拆分在“[一般设置]”中的段字符串，格式 [英] Using C++ splitting a section string which is in "[General Setting]" format

问题描述

我是C ++的新手，我想读取ini文件，它有section和键 - 值对。
根据节，我想读取相应键的值。
首先，我想阅读括在方括号中的部分。
请帮助。
谢谢。

I am new to C++, i want to read ini file which has section and key - value pair. Depending on the section, i want to read the value for corresponding key. Primarily, i want to read the section which is enclosed in square brackets. Please help. Thank you.

推荐答案

对于真正的INI文件解析，我强烈建议 iniparser库。

For real INI file parsing, I highly suggest the iniparser library. It is excellently documented and easy to use in both C and C++ programs.

如果您只对解析字符串<$ p 有兴趣， c $ c> [Section name] ，可以执行以下操作：为字符串查找第一个'['和最后']'，并标记位置。如果已找到这两个字符，请将节名称作为您确定的位置之间的子字符串。

If you are only interested in parsing strings of the form [Section name], you could do the following: Find first '[' and last ']' for the string and mark the positions. If both characters have been found, take the section name to be substring between the positions you identified.

假设您使用 std :: string ，您可以执行以下操作：

Assuming you are using an std::string, you can do the following:

std::string myString = " [Section name] ";

std::size_t start = myString.find_first_of( '[' );
std::size_t end   = myString.find_last_of( ']' );

std::string sectionName;
if( start != std::string::npos && end != std::string::npos )
{
  sectionName = myString.substr(start + 1, end - 1);
}

std::cout << sectionName << std::endl;

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