StringUtils.cpp

//
// Created by root on 11/6/17.
//

#include "StringUtils.h"

// trim from start (in place)
void StringUtils::ltrim(std::string &s) {
    s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int ch) {
        return !std::isspace(ch);
    }));
}

// trim from end (in place)
void StringUtils::rtrim(std::string &s) {
    s.erase(std::find_if(s.rbegin(), s.rend(), [](int ch) {
        return !std::isspace(ch);
    }).base(), s.end());
}

// trim from both ends (in place)
void StringUtils::trim(std::string &s) {
    ltrim(s);
    rtrim(s);
}

// trim from start (copying)
std::string StringUtils::ltrim_copy(std::string s) {
    ltrim(s);
    return s;
}

// trim from end (copying)
std::string StringUtils::rtrim_copy(std::string s) {
    rtrim(s);
    return s;
}

// trim from both ends (copying)
std::string StringUtils::trim_copy(std::string s) {
    trim(s);
    return s;
}

std::string StringUtils::replace(std::string subject, const std::string& search, const std::string& replace) {
    size_t pos = 0;
    while((pos = subject.find(search, pos)) != std::string::npos) {
        subject.replace(pos, search.length(), replace);
        pos += replace.length();
    }
    return subject;
}

std::string StringUtils::replaceFirst(std::string subject, const std::string& search, const std::string& replace) {
    size_t pos = 0;
    while((pos = subject.find(search, pos)) != std::string::npos) {
        subject.replace(pos, search.length(), replace);
        pos += replace.length();
        break;
    }
    return subject;
}

int StringUtils::indexOf(const std::string &text, const std::string &target) {
    int index = -1;
    std::size_t found = text.find(target);
    if (found!=std::string::npos)
        index = static_cast<int>(found);
    return index;
}