98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
#include <cstdlib>
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#include <sys/stat.h>
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#include <string>
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#include <nlohmann/json.hpp>
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#include "log.h"
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#include "file.h"
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#include "misc.h"
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#include "config.h"
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std::string get_config_folder() {
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const char* path;
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path = getenv("XDG_CONFIG_HOME");
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if (path) {
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return std::string(path) + "/logmeow";
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}
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path = getenv("HOME");
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if (path) {
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return std::string(path) + "/.config/logmeow";
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}
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throw std::runtime_error("cannot find suitable config folder, please set XDG_CONFIG_HOME or HOME");
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}
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std::string get_config_file_path() {
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return get_config_folder() + "/config.json";
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}
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// tries to create a directory with an empty string if it's just "/" but who cares
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void create_config_folders_if_necessary() {
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std::string full_path = get_config_folder();
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std::string path;
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size_t pos = 0;
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while (pos != std::string::npos) {
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pos = full_path.find('/', pos);
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if (pos != std::string::npos) {
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pos++;
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}
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path = full_path.substr(0, pos);
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if (!mkdir(path.c_str(), 0700)) {
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continue;
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}
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if (errno == EEXIST) {
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continue;
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}
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throw_system_error(std::string("mkdir(") + quote(path) + ')');
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}
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}
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void from_json(const nlohmann::json& j, Config& config) {
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j.at("logcat_command").get_to(config.logcat_command);
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j.at("normal_font_size").get_to(config.normal_font_size);
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j.at("monospace_font_size").get_to(config.monospace_font_size);
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j.at("filters").get_to(config.filters);
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j.at("exclusions").get_to(config.exclusions);
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}
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Config load_config() {
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std::string config_file_path = get_config_file_path();
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try {
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File config_file(config_file_path.c_str(), "r");
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return nlohmann::json::parse(config_file.get());
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} catch (const std::system_error& e) {
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if (e.code().value() != ENOENT) {
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throw;
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}
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return Config();
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}
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}
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void to_json(nlohmann::json& j, const Config& config) {
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j["logcat_command"] = config.logcat_command;
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j["normal_font_size"] = config.normal_font_size;
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j["monospace_font_size"] = config.monospace_font_size;
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j["filters"] = config.filters;
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j["exclusions"] = config.exclusions;
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}
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void write_config(const Config& config) {
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std::string config_file_path = get_config_file_path();
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std::string tmp_config_file_path = config_file_path + ".tmp";
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{
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File config_file(tmp_config_file_path.c_str(), "w");
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std::string str_config = nlohmann::json(config).dump(4);
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config_file.write(std::move(str_config));
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}
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if (!rename(tmp_config_file_path.c_str(), config_file_path.c_str())) {
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return;
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}
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throw_system_error(std::string("rename(") + quote(tmp_config_file_path) + ", " + quote(config_file_path) + ')');
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}
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