epr24pr5-ojanssen2/Util.cpp

#include "Util.h"
#include "Error.h"
#include <exception>
#include <string>

using err::Error;

namespace util {
    string Util::read_string_between_percent(istream& is) {
        char c;
        string s = "";
        bool read = false;

        for(int i = 0; i < 2; ++i) {
            while (true) {
                is >> c;
                if (!is)
                    throw Error(700, "Could not read char!");
                if (c == '%') {
                    read = !read;
                    break;
                }
                if (!read)
                    continue;
                s += c;
            }
        }

        return s;
    }

    vector<int> Util::read_numbers(istream &is) {
        string until_eol;
        getline(is, until_eol);

        vector<string> numbers_as_string = split(until_eol);
        vector<int> nums;

        try {
            for(string s : numbers_as_string)
                nums.push_back(stoi(s));
        } catch (exception& _) {
            throw Error(700, "Could not convert string to int.");
        }

        return nums;
    }

    vector<string> Util::split(const string& s) {
        vector<string> strs;
        string result = "";

        for(char c : s) {
            if (c == ' ') {
                if (result != "") {
                    strs.push_back(result);
                    result = "";
                }
                break;
            }
            result += c;
        }

        return strs;
    }

    string Util::read_string(istream &s) {
        string result;
        s >> result;
        if (!s)
            throw Error(700, "Could not read stream from stream!");
        return result;
    }
} // util