labels: refactor import/export to mu-store-labels
Move the import/export code to 'lib'.
This commit is contained in:
Dirk-Jan C. Binnema
@ -125,128 +125,19 @@ label_list(const Mu::Store& store, const Options& opts)
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return Ok();
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}
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constexpr std::string_view path_key = "path:";
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constexpr std::string_view message_id_key = "message-id:";
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constexpr std::string_view labels_key = "labels:";
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static Result<void>
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label_export(const Mu::Store& store, const Options& opts)
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{
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const auto now_t{::time({})};
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const auto now_tm{::localtime(&now_t)};
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const auto now{mu_format("{:%F-%T}", *now_tm)};
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const auto fname = opts.label.file.value_or(
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mu_format("mu-export-{}.txt", now));
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auto output{std::ofstream{fname, std::ios::out}};
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if (!output.good())
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return Err(Error{Error::Code::File,
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"failed to open '{}' for writing", fname});
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const auto query{opts.label.query.value_or("")};
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auto results{store.run_query(query)};
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if (!results)
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return Err(Error{Error::Code::Query,
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"failed to run query '{}': {}",
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query, *results.error().what()});
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mu_println(output, ";; version:0 @ {}\n", now);
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for (auto&& result : *results) {
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if (auto &&msg{result.message()}; msg) {
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if (const auto labels{msg->labels()}; !labels.empty()) {
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mu_print(output,
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"{}{}\n"
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"{}{}\n"
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"{}{}\n\n",
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path_key, msg->path(),
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message_id_key, msg->message_id(),
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labels_key, join(labels,','));
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}
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}
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}
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const auto res = export_labels(store, "", opts.label.file);
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if (!res)
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return Err(res.error());
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if (!opts.quiet)
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mu_println("written {}", fname);
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mu_println("written {}", *res);
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return Ok();
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}
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static void
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log_import(const Options& opts, const std::string& msg, bool is_err=false)
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{
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if (is_err)
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mu_debug("{}", msg);
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else
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mu_warning("{}", msg);
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if (is_err && !opts.quiet)
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mu_printerrln("{}", msg);
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else if (opts.verbose)
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mu_println("{}", msg);
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}
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static void
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log_import_err(const Options& opts, const std::string& msg)
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{
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log_import(opts, msg, true);
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}
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static Result<QueryResults>
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log_import_get_matching(Mu::Store& store, const std::string& query, int max=1)
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{
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if (auto qres = store.run_query(query, {}, {}, max); !qres)
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return Err(std::move(qres.error()));
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else if (qres->empty())
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return Err(Error{Error::Code::Query,
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"no matching messages for {}", query});
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else
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return Ok(std::move(*qres));
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}
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static void
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import_labels_for_message(Mu::Store& store, const Options& opts,
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const std::string& path, const std::string& msgid,
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const std::vector<std::string> labels)
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{
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Labels::DeltaLabelVec delta_labels{};
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std::transform(labels.begin(), labels.end(), std::back_inserter(delta_labels),
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[](const auto& label) {
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return DeltaLabel{Delta::Add, label}; });
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const auto qres = [&]()
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->Result<QueryResults>{
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// plan A: match by path
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if (auto qres_a{log_import_get_matching(store, "path:" + path)}; !qres_a) {
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log_import_err(opts, mu_format("failed to find by path: {}; try with message-id",
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qres_a.error().what()));
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// plan B: try the message-id
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return log_import_get_matching(store, "msgid:" + msgid, -1/*all matching*/);
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} else
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return qres_a;
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}();
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// neither plan a or b worked? we have to give up...
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if (!qres) {
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log_import_err(opts, qres.error().what());
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return;
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}
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// we have match(es)!
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for (auto&& item: *qres) {
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auto msg{*item.message()};
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if (opts.label.dry_run )
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mu_println("labels: would apply label '{}' to {}", join(labels, ","), path);
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else if (const auto res = store.update_labels(msg, delta_labels); !res)
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log_import_err(opts, mu_format("failed to update labels for {}: {}",
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msg.path(), res.error().what()));
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else
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log_import(opts, mu_format("applied labels {} to {}", join(labels, ","), path));
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}
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}
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static Result<void>
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label_import(Mu::Store& store, const Options& opts)
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{
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@ -255,36 +146,8 @@ label_import(Mu::Store& store, const Options& opts)
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return Err(Error{Error::Code::InvalidArgument,
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"missing input file"});
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auto input{std::ifstream{*opts.label.file, std::ios::in}};
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if (!input.good())
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return Err(Error{Error::Code::File,
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"failed to open '{}' for reading",
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*opts.label.file});
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std::string line;
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std::string current_path, current_msgid;
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std::vector<std::string> current_labels;
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while (std::getline(input, line)) {
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if (line.find(path_key) == 0)
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current_path = line.substr(path_key.length());
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else if (line.find(message_id_key) == 0)
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current_msgid = line.substr(message_id_key.length());
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else if (line.find(labels_key) == 0) {
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current_labels = split(line.substr(labels_key.length()), ',');
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if (!current_labels.empty())
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import_labels_for_message(store, opts,
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current_path, current_msgid,
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current_labels);
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current_path.clear();
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current_msgid.clear();
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current_labels.clear();
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}
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// ignore anything else.
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}
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return Ok();
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return Mu::import_labels(store, *opts.label.file,
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opts.label.dry_run, opts.quiet, opts.verbose);
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}
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Result<void>
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