added --no_value option to ldb scan to dump key only
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@ -60,6 +60,7 @@ const string LDBCommand::ARG_DB_WRITE_BUFFER_SIZE = "db_write_buffer_size";
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const string LDBCommand::ARG_WRITE_BUFFER_SIZE = "write_buffer_size";
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const string LDBCommand::ARG_FILE_SIZE = "file_size";
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const string LDBCommand::ARG_CREATE_IF_MISSING = "create_if_missing";
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const string LDBCommand::ARG_NO_VALUE = "no_value";
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const char* LDBCommand::DELIM = " ==> ";
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@ -1743,12 +1744,13 @@ Options BatchPutCommand::PrepareOptionsForOpenDB() {
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ScanCommand::ScanCommand(const vector<string>& params,
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const map<string, string>& options, const vector<string>& flags) :
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LDBCommand(options, flags, true,
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BuildCmdLineOptions({ARG_TTL, ARG_HEX, ARG_KEY_HEX, ARG_TO,
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BuildCmdLineOptions({ARG_TTL, ARG_NO_VALUE, ARG_HEX, ARG_KEY_HEX, ARG_TO,
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ARG_VALUE_HEX, ARG_FROM, ARG_TIMESTAMP,
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ARG_MAX_KEYS, ARG_TTL_START, ARG_TTL_END})),
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start_key_specified_(false),
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end_key_specified_(false),
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max_keys_scanned_(-1) {
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max_keys_scanned_(-1),
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no_value_(false) {
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map<string, string>::const_iterator itr = options.find(ARG_FROM);
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if (itr != options.end()) {
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@ -1767,6 +1769,11 @@ ScanCommand::ScanCommand(const vector<string>& params,
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end_key_specified_ = true;
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}
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vector<string>::const_iterator vitr = std::find(flags.begin(), flags.end(), ARG_NO_VALUE);
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if (vitr != flags.end()) {
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no_value_ = true;
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}
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itr = options.find(ARG_MAX_KEYS);
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if (itr != options.end()) {
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try {
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@ -1794,6 +1801,7 @@ void ScanCommand::Help(string& ret) {
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ret.append(" [--" + ARG_MAX_KEYS + "=<N>q] ");
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ret.append(" [--" + ARG_TTL_START + "=<N>:- is inclusive]");
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ret.append(" [--" + ARG_TTL_END + "=<N>:- is exclusive]");
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ret.append(" [--" + ARG_NO_VALUE + "]");
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ret.append("\n");
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}
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@ -1850,15 +1858,20 @@ void ScanCommand::DoCommand() {
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key_slice = formatted_key;
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}
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if (no_value_) {
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fprintf(stdout, "%.*s\n",
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static_cast<int>(key_slice.size()), key_slice.data());
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} else {
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Slice val_slice = it->value();
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std::string formatted_value;
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if (is_value_hex_) {
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formatted_value = "0x" + val_slice.ToString(true /* hex */);
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val_slice = formatted_value;
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}
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fprintf(stdout, "%.*s : %.*s\n",
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static_cast<int>(key_slice.size()), key_slice.data(),
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static_cast<int>(val_slice.size()), val_slice.data());
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}
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num_keys_scanned++;
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if (max_keys_scanned_ >= 0 && num_keys_scanned >= max_keys_scanned_) {
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@ -60,6 +60,7 @@ public:
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static const string ARG_WRITE_BUFFER_SIZE;
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static const string ARG_FILE_SIZE;
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static const string ARG_CREATE_IF_MISSING;
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static const string ARG_NO_VALUE;
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static LDBCommand* InitFromCmdLineArgs(
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const vector<string>& args,
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@ -377,7 +378,7 @@ private:
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*/
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bool StringToBool(string val) {
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std::transform(val.begin(), val.end(), val.begin(),
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[](char ch) -> char { return ::tolower(ch); });
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[](char ch) -> char { return (char)::tolower(ch); });
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if (val == "true") {
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return true;
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@ -709,6 +710,7 @@ private:
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bool start_key_specified_;
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bool end_key_specified_;
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int max_keys_scanned_;
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bool no_value_;
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};
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class DeleteCommand : public LDBCommand {
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