text: /*
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  
  #include "watchman/query/Query.h"
  #include "watchman/query/eval.h"
  #include "watchman/query/parse.h"
  #include "watchman/watchman_client.h"
  #include "watchman/watchman_cmd.h"
  
  using namespace watchman;
  
  /* since /root <timestamp> [patterns] */
  static void cmd_since(struct watchman_client* client, const json_ref& args) {
    const char* clockspec;
  
    /* resolve the root */
    if (json_array_size(args) < 3) {
      send_error_response(client, "not enough arguments for 'since'");
      return;
    }
  
    auto root = resolveRoot(client, args);
  
    auto clock_ele = json_array_get(args, 2);
    clockspec = json_string_value(clock_ele);
    if (!clockspec) {
      send_error_response(client, "expected argument 2 to be a valid clockspec");
      return;
    }
  
    auto query = w_query_parse_legacy(root, args, 3, nullptr, clockspec, nullptr);
    query->clientPid = client->stm ? client->stm->getPeerProcessID() : 0;
  
    auto res = w_query_execute(query.get(), root, nullptr);
    auto response = make_response();
    response.set(
        {{"is_fresh_instance", json_boolean(res.isFreshInstance)},
         {"clock", res.clockAtStartOfQuery.toJson()},
         {"files", std::move(res.resultsArray)},
         {"debug", res.debugInfo.render()}});
    if (res.savedStateInfo) {
      response.set({{"saved-state-info", std::move(res.savedStateInfo)}});
    }
  
    add_root_warnings_to_response(response, root);
    send_and_dispose_response(client, std::move(response));
  }
  W_CMD_REG(
      "since",
      cmd_since,
      CMD_DAEMON | CMD_ALLOW_ANY_USER,
      w_cmd_realpath_root)
  
  /* vim:ts=2:sw=2:et:
   */
  