dispatcher-v2/GlobalHelpers.cpp

#include "GlobalHelpers.h"

/**
 * Convert an integer to a string
 * @param i     The integer
 * @return      The converted string
 */
string intToString(int i) {
    char str[15];
    sprintf(str, "%d", i);
    return (string)str;
}

/**
 * Convert a string to an integer
 * WARNING: did not check if it's valid
 * @param str   The string
 * @return      The converted interger
 */
int stringToInt(string str) {
    return atoi(str.c_str());
}

/**
 * Trim leading and trailing spaces
 * @param str   Original string
 * @return Trimmed string
 */
string trim(string str) {
    string spaces = " \t\n\r";
    size_t start = str.find_first_not_of(spaces);
    size_t end = str.find_last_not_of(spaces);
    return str.substr(start, end - start + 1);
}

/**
 * Get current date/time, format is YYYY-MM-DD HH:mm:ss
 * https://stackoverflow.com/questions/997946/how-to-get-current-time-and-date-in-c
 * @return Current datetime in YYYY-MM-DD HH:mm:ss
 */
const string currentDateTime() {
    time_t     now = time(NULL);
    struct tm  tstruct;
    char       buf[80];
    tstruct = *localtime(&now);
    strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", &tstruct);

    return buf;
}

/**
 * Get current date
 * https://stackoverflow.com/questions/997946/how-to-get-current-time-and-date-in-c
 * @return Current date in YYYY-MM-DD
 */
const string currentDate() {
    time_t     now = time(NULL);
    struct tm  tstruct;
    char       buf[80];
    tstruct = *localtime(&now);
    strftime(buf, sizeof(buf), "%Y-%m-%d", &tstruct);

    return buf;
}

/**
 * Split the string into pieces by the delimeter
 * taken from https://stackoverflow.com/a/236803
 * @param str                   The original string
 * @param delim                 Delimeter
 * @param removeAppendedNull    Where to remove the appended empty strings
 * @return Splitted string
 */
vector<string> split(const string &str, char delim, bool removeAppendedNull) {
    vector<string> elems;
    stringstream ss(str);
    string item;
    while (getline(ss, item, delim)) {
        elems.push_back(item);
    }
    if (removeAppendedNull) {
        while (!elems.empty() && elems.back().empty()) {
            elems.pop_back();
        }
    }
    if (elems.empty()) {
        elems.push_back(str);
    }
    return elems;
}

/**
 * Split the string into pieces by the delimeter, ignore appended empty strings
 * @param str   The original string
 * @param delim Delimeter
 * @return Splitted string
 */
vector<string> split(const string &str, char delim) {
    return split(str, delim, true);
}


/**
 * Load the whole text file content to a string
 * @param filename      File to load
 * @return File content
 */
string loadAllFromFile(string filename) {
    int tried = 0;
    string res = "", tmps;
    fstream fin(filename.c_str(), fstream::in);
    
    while (fin.fail() && tried++ < 10) {
        fin.open(filename.c_str(), fstream::in);
    }
    
    if (fin.fail()) {
        throw Exception("File not found");
    }
    
    while (getline(fin,tmps)) {
        if (res != "") res += "\n";
        res += tmps;
        if (fin.eof()) break;
    }
    fin.close();
    return res;
}