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//===-- CommandObjectApropos.cpp ---------------------------------*- C++
//-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "CommandObjectApropos.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Interpreter/Property.h"
#include "lldb/Utility/Args.h"
using namespace lldb;
using namespace lldb_private;
//-------------------------------------------------------------------------
// CommandObjectApropos
//-------------------------------------------------------------------------
CommandObjectApropos::CommandObjectApropos(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "apropos",
"List debugger commands related to a word or subject.", nullptr) {
CommandArgumentEntry arg;
CommandArgumentData search_word_arg;
// Define the first (and only) variant of this arg.
search_word_arg.arg_type = eArgTypeSearchWord;
search_word_arg.arg_repetition = eArgRepeatPlain;
// There is only one variant this argument could be; put it into the argument
// entry.
arg.push_back(search_word_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
CommandObjectApropos::~CommandObjectApropos() = default;
bool CommandObjectApropos::DoExecute(Args &args, CommandReturnObject &result) {
const size_t argc = args.GetArgumentCount();
if (argc == 1) {
auto search_word = args[0].ref;
if (!search_word.empty()) {
// The bulk of the work must be done inside the Command Interpreter,
// since the command dictionary is private.
StringList commands_found;
StringList commands_help;
m_interpreter.FindCommandsForApropos(search_word, commands_found,
commands_help, true, true, true);
if (commands_found.GetSize() == 0) {
result.AppendMessageWithFormat("No commands found pertaining to '%s'. "
"Try 'help' to see a complete list of "
"debugger commands.\n",
args[0].c_str());
} else {
if (commands_found.GetSize() > 0) {
result.AppendMessageWithFormat(
"The following commands may relate to '%s':\n", args[0].c_str());
size_t max_len = 0;
for (size_t i = 0; i < commands_found.GetSize(); ++i) {
size_t len = strlen(commands_found.GetStringAtIndex(i));
if (len > max_len)
max_len = len;
}
for (size_t i = 0; i < commands_found.GetSize(); ++i)
m_interpreter.OutputFormattedHelpText(
result.GetOutputStream(), commands_found.GetStringAtIndex(i),
"--", commands_help.GetStringAtIndex(i), max_len);
}
}
std::vector<const Property *> properties;
const size_t num_properties =
m_interpreter.GetDebugger().Apropos(search_word, properties);
if (num_properties) {
const bool dump_qualified_name = true;
result.AppendMessageWithFormatv(
"\nThe following settings variables may relate to '{0}': \n\n",
args[0].ref);
for (size_t i = 0; i < num_properties; ++i)
properties[i]->DumpDescription(
m_interpreter, result.GetOutputStream(), 0, dump_qualified_name);
}
result.SetStatus(eReturnStatusSuccessFinishNoResult);
} else {
result.AppendError("'' is not a valid search word.\n");
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendError("'apropos' must be called with exactly one argument.\n");
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
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