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mu-init: automatic export labels with --reinit

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When re-initializing the store, automatically write the labels to a file in mu's
cache, so user can later import them.
This commit is contained in:
Dirk-Jan C. Binnema
2025-08-16 15:48:08 +03:00
parent a6b1f47a30
commit 8c706a77db
6 changed files with 98 additions and 33 deletions
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24
lib/mu-store-labels.cc
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@ -24,9 +24,9 @@
using namespace Mu;
namespace {
constexpr std::string_view path_key = "path:";
constexpr std::string_view message_id_key = "message-id:";
constexpr std::string_view labels_key = "labels:";
constexpr std::string_view path_key = "path:";
constexpr std::string_view message_id_key = "message-id:";
constexpr std::string_view labels_key = "labels:";
}
using OutputPair = std::pair<std::ofstream, std::string>;
@ -36,14 +36,26 @@ export_output(Option<std::string> path)
{
const auto now_t{::time({})};
const auto now_tm{::localtime(&now_t)};
const auto now{mu_format("{:%F-%T}", *now_tm)};
auto fname = path.value_or(mu_format("mu-export-{}.txt", now));
// if path is not specified, use a generated file name (in pwd)
// if path is specified but ends in '/', use the generated file in that
// directory (must exist)
// otherwise, use the path.
auto fname = [&]() {
const auto default_fname{mu_format("mu-export-{}.txt", now)};
if (!path || path->empty())
return default_fname;
else if (path->at(path->length() - 1) == '/')
return *path + default_fname;
else
return *path;
}();
auto output{std::ofstream{fname, std::ios::out}};
if (!output.good())
return Err(Error{Error::Code::File,
"failed pen '{}' for writing", fname});
"failed to open '{}' for writing", fname});
mu_println(output, ";; version:0 @ {}\n", now);