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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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40
lib/mu-store.cc
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@ -127,7 +127,6 @@ struct Store::Private {
Result<Store::Id> update_message_unlocked(Message& msg, Store::Id docid);
Result<Store::Id> update_message_unlocked(Message& msg, const std::string& old_path);
using PathMessage = std::pair<std::string, Message>;
Result<PathMessage> move_message_unlocked(Message&& msg,
Option<const std::string&> target_mdir,
@ -211,9 +210,29 @@ Store::Private::find_duplicates_unlocked(const Store& store,
}
}
static void
reinit_export_labels(const Store& store)
{
// slightly hacky way to get the cache-path...
const auto cache_path{canonicalize_filename(
join_paths(store.path(), "..")) + "/"};
if (const auto res =
Mu::export_labels(store, "", cache_path); !res)
throw Mu::Error(Error::Code::CannotReinit,
"cannot re-init; "
"failed to export labels: {}",
res.error().what())
.add_hint("see mu-init(1) for details");
else {
mu_info("exported labels to: {}", *res);
mu_println("exported labels to: {}", *res);
}
}
Store::Store(const std::string& path, Store::Options opts)
: priv_{std::make_unique<Private>(path, none_of(opts & Store::Options::Writable))}
: priv_{std::make_unique<Private>(
path, none_of(opts & Store::Options::Writable))}
{
if (none_of(opts & Store::Options::Writable) &&
any_of(opts & Store::Options::ReInit))
@ -222,12 +241,19 @@ Store::Store(const std::string& path, Store::Options opts)
const auto s_version{config().get<Config::Id::SchemaVersion>()};
if (any_of(opts & Store::Options::ReInit)) {
/* don't try to recover from version with an incompatible scheme */
/* export labels, if necessary (throws if there's an error) */
if (!label_map().empty())
reinit_export_labels(*this);
/* don't try to recover from version with an incompatible
* scheme */
if (s_version < 500)
throw Mu::Error(Error::Code::CannotReinit,
"old schema ({}) is too old to re-initialize from",
s_version).add_hint("Invoke 'mu init' without '--reinit'; "
"see mu-init(1) for details");
throw Mu::Error(
Error::Code::CannotReinit,
"old schema ({}) is too old to re-initialize from",
s_version).add_hint("Invoke 'mu init' without '--reinit'; "
"see mu-init(1) for details");
const auto old_root_maildir{root_maildir()};
MemDb mem_db;