Method execute

src/commands/CmdModify.cpp:61–107

///////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
int CmdModify::execute(std::string&) {
  auto rc = 0;

  // Apply filter.
  Filter filter;
  std::vector<Task> filtered;
  filter.subset(filtered);
  if (filtered.size() == 0) {
    Context::getContext().footnote("No tasks specified.");
    return 1;
  }

  // Accumulated project change notifications.
  std::map<std::string, std::string> projectChanges;

  auto count = 0;
  if (filtered.size() > 1) {
    feedback_affected("This command will alter {1} tasks.", filtered.size());
  }
  for (auto& task : filtered) {
    Task before(task);
    task.modify(Task::modReplace);

    if (before != task) {
      // Abort if change introduces inconsistencies.
      checkConsistency(before, task);

      auto question =
          format("Modify task {1} '{2}'?", task.identifier(true), task.get("description"));

      if (permission(before.diff(task) + question, filtered.size())) {
        count += modifyAndUpdate(before, task, &projectChanges);
      } else {
        std::cout << "Task not modified.\n";
        rc = 1;
        if (_permission_quit) break;
      }
    }
  }

  // Now list the project changes.
  for (const auto& change : projectChanges)
    if (change.first != "") Context::getContext().footnote(change.second);

  feedback_affected(count == 1 ? "Modified {1} task." : "Modified {1} tasks.", count);
  return rc;
}

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// TODO Why is this not in Task::validate?