1/*
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#include "subcommand_help.h"
17#include "debug_logger.h"
18using namespace std;
19
20namespace OHOS {
21namespace Developtools {
22namespace HiPerf {
23bool SubCommandHelp::OnSubCommand(std::vector<std::string> &args)
24{
25    HLOGV("enter");
26    OnHelp(args);
27    return true;
28}
29
30void SubCommandHelp::RegisterSubCommandHelp()
31{
32    HLOGV("enter");
33    SubCommand::RegisterSubCommand("help", std::make_unique<SubCommandHelp>());
34}
35
36bool SubCommandHelp::OnHelp(std::vector<std::string> &args)
37{
38    if (args.empty()) {
39        const auto &mainOptions = Option::GetMainOptions();
40        HLOGD("%zu options found:", mainOptions.size());
41        printf("Usage: hiperf [options] command [args for command]\n");
42
43        printf("options:\n");
44        for (const auto &commandOption : mainOptions) {
45            if (commandOption.second != nullptr) {
46                printf("\t%-20s\t%s\n", commandOption.first.c_str(),
47                    commandOption.second->help.c_str());
48            }
49        }
50
51        auto &commands = SubCommand::GetSubCommands();
52        HLOGD("%zu cmds found:", commands.size());
53        printf("command:\n");
54        for (const auto &command : commands) {
55            if (command.second == nullptr) {
56                continue;
57            }
58            printf("\t%s:\t%s\n", command.second->Name().c_str(), command.second->Brief().c_str());
59        }
60        printf("\nSee 'hiperf help [command]' for more information on a specific command.\n\n");
61    } else {
62        auto command = SubCommand::FindSubCommand(args.front());
63        if (command != nullptr) {
64            args.clear();
65            printf("%s\n", command->Help().c_str());
66        } else {
67            printf("Unknown command: '%s'\n", args.front().c_str());
68            return false;
69        }
70    }
71
72    return true;
73}
74} // namespace HiPerf
75} // namespace Developtools
76} // namespace OHOS
77