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// Copyright Contributors to the DNF5 project.
// Copyright Contributors to the libdnf project.
// SPDX-License-Identifier: GPL-2.0-or-later
//
// This file is part of libdnf: https://github.com/rpm-software-management/libdnf/
//
// Libdnf is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// Libdnf is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with libdnf. If not, see <https://www.gnu.org/licenses/>.
#ifndef LIBDNF5_CLI_UTILS_USERCONFIRM_HPP
#define LIBDNF5_CLI_UTILS_USERCONFIRM_HPP
#include "libdnf5-cli/defs.h"
#include <langinfo.h>
#include <libdnf5/conf/config_main.hpp>
#include <libdnf5/utils/bgettext/bgettext-lib.h>
#include <regex.h>
#include <iostream>
#include <string>
namespace libdnf5::cli::utils::userconfirm {
/// Asks the user for confirmation. The default answer is taken from the configuration.
template <class Config>
bool userconfirm(Config & config) {
// "assumeno" takes precedence over "assumeyes"
if (config.get_assumeno_option().get_value()) {
return false;
}
if (config.get_assumeyes_option().get_value()) {
return true;
}
auto default_yes = config.get_defaultyes_option().get_value();
const char * msg_id;
const char * msg_translated;
if (default_yes) {
msg_id = "Is this ok [Y/n]: ";
msg_translated = dgettext("libdnf5-cli", "Is this ok [Y/n]: ");
} else {
msg_id = "Is this ok [y/N]: ";
msg_translated = dgettext("libdnf5-cli", "Is this ok [y/N]: ");
}
// If the prompt was translated, we assume the system locale (nl_langinfo) matches the language of the prompt.
// If the prompt fell back to English (no translation found), we MUST use English regexes to avoid
// dangerous mismatches (e.g. Swahili system locale where 'n' means Yes, but displaying English [y/N]).
std::string yes_pattern;
std::string no_pattern;
if (std::string(msg_translated) != msg_id) {
yes_pattern = nl_langinfo(YESEXPR);
no_pattern = nl_langinfo(NOEXPR);
} else {
yes_pattern = "^[yY]";
no_pattern = "^[nN]";
}
while (true) {
std::cerr << msg_translated;
std::string choice;
std::getline(std::cin, choice);
if (choice.empty()) {
return default_yes;
}
// Match user input against translator-provided patterns
// These patterns stay in sync with the translated prompt
regex_t regex;
if (regcomp(®ex, yes_pattern.c_str(), REG_EXTENDED | REG_NOSUB) == 0) {
int result = regexec(®ex, choice.c_str(), 0, nullptr, 0);
regfree(®ex);
if (result == 0) {
return true;
}
}
if (regcomp(®ex, no_pattern.c_str(), REG_EXTENDED | REG_NOSUB) == 0) {
int result = regexec(®ex, choice.c_str(), 0, nullptr, 0);
regfree(®ex);
if (result == 0) {
return false;
}
}
// Fallback: accept English y/n if they didn't match the localized patterns
if (choice == "y" || choice == "Y") {
return true;
}
if (choice == "n" || choice == "N") {
return false;
}
// If patterns didn't match, the input is invalid - loop and ask again
}
}
}; // namespace libdnf5::cli::utils::userconfirm
#endif // LIBDNF5_CLI_UTILS_USERCONFIRM_HPP
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