std::string 문자열 조작

#pragma once

//

// std::string 처리 함수들

//

#include <string>

#include <vector>

#include <sstream>

#include <iomanip>

using namespace std;

string trim(string& str, const string& drop = " \t\r\n\v") 

{ 

string rtrim = str.erase(str.find_last_not_of(drop)+1);  

return rtrim.erase(0,rtrim.find_first_not_of(drop));  

}  

string rtrim(string str, const string& drop = " \t\r\n\v")

{  

return str.erase( str.find_last_not_of(drop)+1 );

}  

string ltrim(string str, const string& drop = " \t\r\n\v")

{  

return str.erase( 0, str.find_first_anot_of(drop) );

}

// src_str : 원본 문자열

// find_str : 찾을 문자열

// replace_str : 바꿀 문자열

string ReplaceAll(const string& src_str, const string& find_str, const string& replace_str)

{

string str = src_str;

for (string::size_type pos=str.find(find_str); pos!= string::npos; pos=str.find(find_str)) {

str.replace(pos, find_str.size(), replace_str);

}

return str;

}

// 위에건 replaceAll("hi%", "%", "%%") 하면 무한 loop 문제 있음

string replaceAll(const string& src_str, const string& find_str, const string& replace_str)

{

string str = src_str;

for (string::size_type pos=str.find(find_str); pos!= string::npos; pos=str.find(find_str, pos)) {

str.replace(pos, find_str.size(), replace_str);

pos += replace_str.size();

}

return str;

}

// 구분 문자열(seperator)로 split하여 vector로 넘겨줌

std::vector<string> split(string& str, string sep)

{

size_t n = str.length();

size_t start, stop;

std::vector<string> result;

start = str.find_first_not_of(sep);

while ((start >= 0) && (start < n)) {

stop = str.find_first_of(sep, start);

if ((stop < 0) || (stop > n)) stop = n;

result.push_back(str.substr(start, stop - start));

start = str.find_first_not_of(sep, stop+1);

}

return result;

}

// 두 문자 같은지 비교

bool compareIgnoreCaseChar(char& ch1, char& ch2)

{

return (toupper(ch1) == toupper(ch2));

}

// 두 문자열 같은지 비교 : 대소문자 비구분

bool compareIgnoreCase(string& str1, string& str2)

{

return ((str1.size() == str2.size()) && 

equal(str1.begin(), str1.end(), str2.begin(), compareIgnoreCaseChar));

}

// BYTE를 문자열로 변환 : 0x00

string toString(BYTE b)

{

stringstream ss;

ss << "0x" << setw(2) << setfill('0') << hex << static_cast<unsigned>(b);

return ss.str();

}

// SYSTEMTIME을 문자열로 변환 : 1999-12-01 22:50:00.123

string toString(SYSTEMTIME& time)

{

stringstream ss;

ss << setfill('0') << setw(4) << time.wYear 

<< "-" << setw(2) << time.wMonth 

<< "-" << setw(2) << time.wDay

<< " " << setw(2) << time.wHour 

<< ":" << setw(2) << time.wMinute

<< ":" << setw(2) << time.wSecond

<< "." << setw(3) << time.wMilliseconds;

return ss.str();

}

소문자로 변환

string mutex_lower_name = mutex_name;

transform(mutex_lower_name.begin(), mutex_lower_name.end(), mutex_lower_name.begin(), tolower);

// std::string 에 있는 특수 문자를 hex string 출력하기 위함

  static std::string to_hex_string(const std::string &str) {

    const char *b = str.c_str();

    std::stringstream ss;

    for (site_t i = 0; i < str.size(); ++i) {

      ss << std::hex << (int) (b + i);

    }

    return ss.str();

  }