C ++ practice: Regular Expressions parse sound card parameters and regular expressions sound card

C ++ practice: Regular Expressions parse sound card parameters and regular expressions sound card

C ++ practice: using regular expressions to parse sound card Parameters

The delimiter used by the regular expression in Java. It's hard to swallow it. C ++ 11 to parse sound card parameters. [Txt2re is quite useful] [1].

// ================================================ ==============================================

// Name: CppPro. cpp

// Author:

// Version:

// Copyright: Your copyright notice

// Description: Hello World in C ++, Ansi-style

// ================================================ ==============================================

# Include

# Include

# Include

Using namespace std;

/**

* In the constructor

*/

Class Card {

Public:

Int getId () const {

Return id;

}

Private:

Int id;

String name;

Class Device {

Int id;

};

};

String trim (string & str)

{

Size_t first = str. find_first_not_of ('');

If (first = string: npos)

Return "";

Size_t last = str. find_last_not_of ('');

Return str. substr (first, (last-first + 1 ));

}

/**

* Start a Loop to receive client commands

*/

Int main (){

Std: string id;

Std: string name;

Smatch sm; // container for storing string results

Std: string txt = "0 [PCH]: HDA-Intel-HDA Intel PCH ";

Std: string re1 = "()"; // Any Single Character 1

Std: string re2 = "(\ d +)"; // Integer Number 1

Std: string re3 = "()"; // Any Single Character 2

Std: string re4 = "(\\[.*? \]) "; // Square Braces 1

Std: string re5 = "(:)"; // Any Single Character 3

Std: string re6 = "()"; // Any Single Character 4

If (regex_search (txt, sm, regex (re1 + re2 + re3 + re4 + re5 + re6 ))){

Id = sm [2];

Name = sm [4];

Name = name. substr (1, name. length ()-2 );

Name = trim (name );

}

Cout <"name:" <name <"id:" <id <endl;

}

Running result:

Name: PCH id: 0