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https://github.com/hoytech/strfry.git
synced 2025-06-19 01:34:57 +00:00
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
#include <iostream>
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#include <docopt.h>
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#include "golpe.h"
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#include "events.h"
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static const char USAGE[] =
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R"(
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Usage:
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export [--since=<since>] [--until=<until>] [--reverse]
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)";
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void cmd_export(const std::vector<std::string> &subArgs) {
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std::map<std::string, docopt::value> args = docopt::docopt(USAGE, subArgs, true, "");
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uint64_t since = 0, until = MAX_U64;
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if (args["--since"]) since = args["--since"].asLong();
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if (args["--until"]) until = args["--until"].asLong();
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bool reverse = args["--reverse"].asBool();
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Decompressor decomp;
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auto txn = env.txn_ro();
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auto dbVersion = getDBVersion(txn);
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if (dbVersion == 0) throw herr("migration from DB version 0 not supported by this version of strfry");
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uint64_t start = reverse ? until : since;
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uint64_t startDup = reverse ? MAX_U64 : 0;
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env.generic_foreachFull(txn, env.dbi_Event__created_at, lmdb::to_sv<uint64_t>(start), lmdb::to_sv<uint64_t>(startDup), [&](auto k, auto v) {
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if (reverse) {
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if (lmdb::from_sv<uint64_t>(k) < since) return false;
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} else {
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if (lmdb::from_sv<uint64_t>(k) > until) return false;
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}
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auto view = lookupEventByLevId(txn, lmdb::from_sv<uint64_t>(v));
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std::cout << getEventJson(txn, decomp, view.primaryKeyId) << "\n";
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return true;
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}, reverse);
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}
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