66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
// License: AGPLv3 or later. https://www.gnu.org/licenses/licenses.html
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#include <fstream>
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#include <iostream>
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#include <random>
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# include "general_functions.h"
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using namespace std;
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vector<string> get_textfile_lines(std::string filename)
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{
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ifstream file(filename);
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vector<string> file_lines;
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if (! file.good())
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{
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cerr << "Failed to open/read file: " << filename\
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<< ". Non-exhaustive list of possible reasons:\n"\
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<< "1. File does not exist.\n"\
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<< "2. Unable to read file due to:\n"\
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<< "2.1 Don't have read access to file\n"\
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<< "2.2 File is opened elsewhere and some program have a "\
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<< "lock on file.\n";
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exit(2);
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}
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cout << "Reading file: " << filename << endl;
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while (file.good())
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{
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string line;
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getline(file, line);
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file_lines.push_back(line);
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}
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file.close();
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return file_lines;
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}
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int random_int(int lower_bound, int upper_bound)
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{
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static std::random_device seed;
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static std::mt19937 random_number_generator(seed());
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std::uniform_int_distribution<std::mt19937::result_type> range(
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lower_bound, upper_bound);
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return range(random_number_generator);
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}
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bool is_string_some_positive_number(std::string a_string)
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{
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for (int i=0; i < a_string.size(); i++)
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{
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string character(1, a_string[i]);
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try
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{
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stoi(character);
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}
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catch(...)
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{
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return false;
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}
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}
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return true;
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}
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