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"
18
19 namespace OHOS {
20 namespace Developtools {
21 namespace HiPerf {
OnSubCommand(std::vector<std::string> & args)22 HiperfError SubCommandHelp::OnSubCommand(std::vector<std::string>& args)
23 {
24 HLOGV("enter");
25 OnHelp(args);
26 return HiperfError::NO_ERR;
27 }
28
RegisterSubCommandHelp()29 void SubCommandHelp::RegisterSubCommandHelp()
30 {
31 HLOGV("enter");
32 Option::RegisterMainOption("--help", "show help", OnHelp);
33 Option::RegisterMainOption("-h", "show help", OnHelp);
34 SubCommand::RegisterSubCommand("help", SubCommandHelp::GetInstance);
35 }
36
OnHelp(std::vector<std::string> & args)37 bool SubCommandHelp::OnHelp(std::vector<std::string> &args)
38 {
39 if (args.empty()) {
40 const auto &mainOptions = Option::GetMainOptions();
41 HLOGD("%zu options found:", mainOptions.size());
42 printf("Usage: hiperf [options] command [args for command]\n");
43
44 printf("options:\n");
45 for (const auto &commandOption : mainOptions) {
46 if (commandOption.second != nullptr) {
47 printf("\t%-20s\t%s\n", commandOption.first.c_str(),
48 commandOption.second->help.c_str());
49 }
50 }
51
52 auto &commands = SubCommand::GetSubCommands();
53 HLOGD("%zu cmds found:", commands.size());
54 printf("command:\n");
55 for (const auto &command : commands) {
56 if (command.second == nullptr) {
57 continue;
58 }
59 printf("\t%s:\t%s\n", command.second().Name().c_str(), command.second().Brief().c_str());
60 }
61 printf("\nSee 'hiperf help [command]' for more information on a specific command.\n\n");
62 } else {
63 auto command = SubCommand::FindSubCommand(args.front());
64 if (command != nullptr) {
65 args.clear();
66 printf("%s\n", command->Help().c_str());
67 } else {
68 printf("Unknown command: '%s'\n", args.front().c_str());
69 return false;
70 }
71 }
72
73 return true;
74 }
75
GetInstance()76 SubCommand& SubCommandHelp::GetInstance()
77 {
78 static SubCommandHelp subCommand;
79 return subCommand;
80 }
81 } // namespace HiPerf
82 } // namespace Developtools
83 } // namespace OHOS
84