C++ Args::AppendArgument方法代码示例

TEST(ArgsTest, TestArgv) {
  Args args;
  EXPECT_EQ(nullptr, args.GetArgumentVector());

  args.AppendArgument("1");
  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
  EXPECT_EQ(nullptr, args.GetArgumentVector()[1]);

  args.AppendArgument("2");
  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
  EXPECT_EQ(nullptr, args.GetArgumentVector()[2]);

  args.AppendArgument("3");
  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
  EXPECT_EQ(nullptr, args.GetArgumentVector()[3]);

  args.InsertArgumentAtIndex(1, "1.5");
  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[3]);
  EXPECT_EQ(nullptr, args.GetArgumentVector()[4]);

  args.InsertArgumentAtIndex(4, "3.5");
  EXPECT_NE(nullptr, args.GetArgumentVector()[0]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[1]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[2]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[3]);
  EXPECT_NE(nullptr, args.GetArgumentVector()[4]);
  EXPECT_EQ(nullptr, args.GetArgumentVector()[5]);
}

bool TestClient::StartDebugger() {
  const ArchSpec &arch_spec = HostInfo::GetArchitecture();
  Args args;
  args.AppendArgument(LLDB_SERVER);
  args.AppendArgument("gdbserver");
  args.AppendArgument("--log-channels=gdb-remote packets");
  args.AppendArgument("--reverse-connect");
  std::string log_file_name = GenerateLogFileName(arch_spec);
  if (log_file_name.size()) {
    args.AppendArgument("--log-file=" + log_file_name);
  }

  Status error;
  TCPSocket listen_socket(true, false);
  error = listen_socket.Listen("127.0.0.1:0", 5);
  if (error.Fail()) {
    GTEST_LOG_(ERROR) << "Unable to open listen socket.";
    return false;
  }

  char connect_remote_address[64];
  snprintf(connect_remote_address, sizeof(connect_remote_address),
           "localhost:%u", listen_socket.GetLocalPortNumber());

  args.AppendArgument(connect_remote_address);

  m_server_process_info.SetArchitecture(arch_spec);
  m_server_process_info.SetArguments(args, true);
  Status status = Host::LaunchProcess(m_server_process_info);
  if (status.Fail()) {
    GTEST_LOG_(ERROR)
        << formatv("Failure to launch lldb server: {0}.", status).str();
    return false;
  }

  char connect_remote_uri[64];
  snprintf(connect_remote_uri, sizeof(connect_remote_uri), "connect://%s",
           connect_remote_address);
  Socket *accept_socket;
  listen_socket.Accept(accept_socket);
  SetConnection(new ConnectionFileDescriptor(accept_socket));

  SendAck(); // Send this as a handshake.
  return true;
}

// If there is no PATH variable specified inside the environment then set the path to /system/bin.
// It is required because the default path used by execve() is wrong on android.
static void
FixupEnvironment(Args& env)
{
    static const char* path = "PATH=";
    static const int path_len = ::strlen(path);
    for (const char** args = env.GetConstArgumentVector(); *args; ++args)
        if (::strncmp(path, *args, path_len) == 0)
            return;
    env.AppendArgument("PATH=/system/bin");
}

size_t OptionValueDictionary::GetArgs(Args &args) const {
  args.Clear();
  collection::const_iterator pos, end = m_values.end();
  for (pos = m_values.begin(); pos != end; ++pos) {
    StreamString strm;
    strm.Printf("%s=", pos->first.GetCString());
    pos->second->DumpValue(nullptr, strm, eDumpOptionValue | eDumpOptionRaw);
    args.AppendArgument(strm.GetString());
  }
  return args.GetArgumentCount();
}

size_t OptionValueArray::GetArgs(Args &args) const {
  args.Clear();
  const uint32_t size = m_values.size();
  for (uint32_t i = 0; i < size; ++i) {
    llvm::StringRef string_value = m_values[i]->GetStringValue();
    if (!string_value.empty())
      args.AppendArgument(string_value);
  }

  return args.GetArgumentCount();
}

static void FixupEnvironment(Args &env) {
#ifdef __ANDROID__
  // If there is no PATH variable specified inside the environment then set the
  // path to /system/bin. It is required because the default path used by
  // execve() is wrong on android.
  static const char *path = "PATH=";
  for (auto &entry : env.entries()) {
    if (entry.ref.startswith(path))
      return;
  }
  env.AppendArgument(llvm::StringRef("PATH=/system/bin"));
#endif
}

int CommandObjectMultiword::HandleCompletion(Args &input, int &cursor_index,
                                             int &cursor_char_position,
                                             int match_start_point,
                                             int max_return_elements,
                                             bool &word_complete,
                                             StringList &matches) {
  // Any of the command matches will provide a complete word, otherwise the
  // individual
  // completers will override this.
  word_complete = true;

  const char *arg0 = input.GetArgumentAtIndex(0);
  if (cursor_index == 0) {
    AddNamesMatchingPartialString(m_subcommand_dict, arg0, matches);

    if (matches.GetSize() == 1 && matches.GetStringAtIndex(0) != nullptr &&
        strcmp(arg0, matches.GetStringAtIndex(0)) == 0) {
      StringList temp_matches;
      CommandObject *cmd_obj = GetSubcommandObject(arg0, &temp_matches);
      if (cmd_obj != nullptr) {
        if (input.GetArgumentCount() == 1) {
          word_complete = true;
        } else {
          matches.DeleteStringAtIndex(0);
          input.Shift();
          cursor_char_position = 0;
          input.AppendArgument("");
          return cmd_obj->HandleCompletion(
              input, cursor_index, cursor_char_position, match_start_point,
              max_return_elements, word_complete, matches);
        }
      }
    }
    return matches.GetSize();
  } else {
    CommandObject *sub_command_object = GetSubcommandObject(arg0, &matches);
    if (sub_command_object == nullptr) {
      return matches.GetSize();
    } else {
      // Remove the one match that we got from calling GetSubcommandObject.
      matches.DeleteStringAtIndex(0);
      input.Shift();
      cursor_index--;
      return sub_command_object->HandleCompletion(
          input, cursor_index, cursor_char_position, match_start_point,
          max_return_elements, word_complete, matches);
    }
  }
}

SBError
SBPlatform::ConnectRemote (SBPlatformConnectOptions &connect_options)
{
    SBError sb_error;
    PlatformSP platform_sp(GetSP());
    if (platform_sp && connect_options.GetURL())
    {
        Args args;
        args.AppendArgument(connect_options.GetURL());
        sb_error.ref() = platform_sp->ConnectRemote(args);
    }
    else
    {
        sb_error.SetErrorString("invalid platform");
    }
    return sb_error;
}

void
BreakpointIDList::FindAndReplaceIDRanges (Args &old_args, Target *target, CommandReturnObject &result,
                                          Args &new_args)
{
    std::string range_start;
    const char *range_end;
    const char *current_arg;
    const size_t num_old_args = old_args.GetArgumentCount();

    for (size_t i = 0; i < num_old_args; ++i)
    {
        bool is_range = false;
        current_arg = old_args.GetArgumentAtIndex (i);

        uint32_t range_start_len = 0;
        uint32_t range_end_pos = 0;
        if (BreakpointIDList::StringContainsIDRangeExpression (current_arg, &range_start_len, &range_end_pos))
        {
            is_range = true;
            range_start = (char *) malloc (range_start_len + 1);
            range_start.assign (current_arg, range_start_len);
            range_end = current_arg + range_end_pos;
        }
        else if ((i + 2 < num_old_args)
                 && BreakpointID::IsRangeIdentifier (old_args.GetArgumentAtIndex (i+1))
                 && BreakpointID::IsValidIDExpression (current_arg)
                 && BreakpointID::IsValidIDExpression (old_args.GetArgumentAtIndex (i+2)))
        {
            range_start.assign (current_arg);
            range_end = old_args.GetArgumentAtIndex (i+2);
            is_range = true;
            i = i+2;
        }

        if (is_range)
        {
            break_id_t start_bp_id;
            break_id_t end_bp_id;
            break_id_t start_loc_id;
            break_id_t end_loc_id;

            BreakpointID::ParseCanonicalReference (range_start.c_str(), &start_bp_id, &start_loc_id);
            BreakpointID::ParseCanonicalReference (range_end, &end_bp_id, &end_loc_id);

            if ((start_bp_id == LLDB_INVALID_BREAK_ID)
                || (! target->GetBreakpointByID (start_bp_id)))
            {
                new_args.Clear();
                result.AppendErrorWithFormat ("'%s' is not a valid breakpoint ID.\n", range_start.c_str());
                result.SetStatus (eReturnStatusFailed);
                return;
            }

            if ((end_bp_id == LLDB_INVALID_BREAK_ID)
                || (! target->GetBreakpointByID (end_bp_id)))
            {
                new_args.Clear();
                result.AppendErrorWithFormat ("'%s' is not a valid breakpoint ID.\n", range_end);
                result.SetStatus (eReturnStatusFailed);
                return;
            }

            // We have valid range starting & ending breakpoint IDs.  Go through all the breakpoints in the
            // target and find all the breakpoints that fit into this range, and add them to new_args.

            const BreakpointList& breakpoints = target->GetBreakpointList();
            const size_t num_breakpoints = breakpoints.GetSize();
            for (size_t j = 0; j < num_breakpoints; ++j)
            {
                Breakpoint *breakpoint = breakpoints.GetBreakpointByIndex (j).get();
                break_id_t cur_bp_id = breakpoint->GetID();

                if ((cur_bp_id < start_bp_id) || (cur_bp_id > end_bp_id))
                    continue;

                const size_t num_locations = breakpoint->GetNumLocations();

                if ((cur_bp_id == start_bp_id) && (start_loc_id != LLDB_INVALID_BREAK_ID))
                {
                    for (size_t k = 0; k < num_locations; ++k)
                    {
                        BreakpointLocation * bp_loc = breakpoint->GetLocationAtIndex(k).get();
                        if (bp_loc->GetID() >= start_loc_id)
                        {
                            StreamString canonical_id_str;
                            BreakpointID::GetCanonicalReference (&canonical_id_str, cur_bp_id, bp_loc->GetID());
                            new_args.AppendArgument (canonical_id_str.GetData());
                        }
                    }
                }
                else if ((cur_bp_id == end_bp_id) && (end_loc_id != LLDB_INVALID_BREAK_ID))
                {
                    for (size_t k = 0; k < num_locations; ++k)
                    {
                        BreakpointLocation * bp_loc = breakpoint->GetLocationAtIndex(k).get();
                        if (bp_loc->GetID() <= end_loc_id)
                        {
                            StreamString canonical_id_str;
                            BreakpointID::GetCanonicalReference (&canonical_id_str, cur_bp_id, bp_loc->GetID());
                            new_args.AppendArgument (canonical_id_str.GetData());
//.........这里部分代码省略.........

int
CommandInterpreter::HandleCompletionMatches (Args &parsed_line,
                                             int &cursor_index,
                                             int &cursor_char_position,
                                             int match_start_point,
                                             int max_return_elements,
                                             bool &word_complete,
                                             StringList &matches)
{
    int num_command_matches = 0;
    bool look_for_subcommand = false;
    
    // For any of the command completions a unique match will be a complete word.
    word_complete = true;

    if (cursor_index == -1)
    {
        // We got nothing on the command line, so return the list of commands
        bool include_aliases = true;
        num_command_matches = GetCommandNamesMatchingPartialString ("", include_aliases, matches);
    }
    else if (cursor_index == 0)
    {
        // The cursor is in the first argument, so just do a lookup in the dictionary.
        CommandObject *cmd_obj = GetCommandObject (parsed_line.GetArgumentAtIndex(0), &matches);
        num_command_matches = matches.GetSize();

        if (num_command_matches == 1
            && cmd_obj && cmd_obj->IsMultiwordObject()
            && matches.GetStringAtIndex(0) != NULL
            && strcmp (parsed_line.GetArgumentAtIndex(0), matches.GetStringAtIndex(0)) == 0)
        {
            look_for_subcommand = true;
            num_command_matches = 0;
            matches.DeleteStringAtIndex(0);
            parsed_line.AppendArgument ("");
            cursor_index++;
            cursor_char_position = 0;
        }
    }

    if (cursor_index > 0 || look_for_subcommand)
    {
        // We are completing further on into a commands arguments, so find the command and tell it
        // to complete the command.
        // First see if there is a matching initial command:
        CommandObject *command_object = GetCommandObject (parsed_line.GetArgumentAtIndex(0));
        if (command_object == NULL)
        {
            return 0;
        }
        else
        {
            parsed_line.Shift();
            cursor_index--;
            num_command_matches = command_object->HandleCompletion (*this,
                                                                    parsed_line, 
                                                                    cursor_index, 
                                                                    cursor_char_position,
                                                                    match_start_point, 
                                                                    max_return_elements,
                                                                    word_complete, 
                                                                    matches);
        }
    }

    return num_command_matches;

}

int
CommandObject::HandleCompletion
(
    Args &input,
    int &cursor_index,
    int &cursor_char_position,
    int match_start_point,
    int max_return_elements,
    bool &word_complete,
    StringList &matches
)
{
    // Default implmentation of WantsCompletion() is !WantsRawCommandString().
    // Subclasses who want raw command string but desire, for example,
    // argument completion should override WantsCompletion() to return true,
    // instead.
    if (WantsRawCommandString() && !WantsCompletion())
    {
        // FIXME: Abstract telling the completion to insert the completion character.
        matches.Clear();
        return -1;
    }
    else
    {
        // Can we do anything generic with the options?
        Options *cur_options = GetOptions();
        CommandReturnObject result;
        OptionElementVector opt_element_vector;

        if (cur_options != NULL)
        {
            // Re-insert the dummy command name string which will have been
            // stripped off:
            input.Unshift ("dummy-string");
            cursor_index++;


            // I stick an element on the end of the input, because if the last element is
            // option that requires an argument, getopt_long will freak out.

            input.AppendArgument ("<FAKE-VALUE>");

            input.ParseArgsForCompletion (*cur_options, opt_element_vector, cursor_index);

            input.DeleteArgumentAtIndex(input.GetArgumentCount() - 1);

            bool handled_by_options;
            handled_by_options = cur_options->HandleOptionCompletion (input,
                                                                      opt_element_vector,
                                                                      cursor_index,
                                                                      cursor_char_position,
                                                                      match_start_point,
                                                                      max_return_elements,
                                                                      word_complete,
                                                                      matches);
            if (handled_by_options)
                return matches.GetSize();
        }

        // If we got here, the last word is not an option or an option argument.
        return HandleArgumentCompletion (input,
                                         cursor_index,
                                         cursor_char_position,
                                         opt_element_vector,
                                         match_start_point,
                                         max_return_elements,
                                         word_complete,
                                         matches);
    }
}