mirror of https://gitee.com/bigwinds/arangodb
193 lines
7.5 KiB
C++
193 lines
7.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// @brief base class for a line editor
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2014-2015 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2014-2015, ArangoDB GmbH, Cologne, Germany
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/// @author Copyright 2011-2013, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_UTILITIES_LINE_EDITOR_H
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#define ARANGODB_UTILITIES_LINE_EDITOR_H 1
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#include "Basics/Common.h"
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namespace arangodb {
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class ShellImplementation;
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// -----------------------------------------------------------------------------
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// --SECTION-- class LineEditor
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief line editor
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////////////////////////////////////////////////////////////////////////////////
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class LineEditor {
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LineEditor(LineEditor const&) = delete;
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LineEditor& operator= (LineEditor const&) = delete;
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// -----------------------------------------------------------------------------
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// --SECTION-- public constants
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// -----------------------------------------------------------------------------
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief number of history entries
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////////////////////////////////////////////////////////////////////////////////
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static const int MAX_HISTORY_ENTRIES = 1000;
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// -----------------------------------------------------------------------------
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// --SECTION-- constructors and destructors
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// -----------------------------------------------------------------------------
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief constructor
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////////////////////////////////////////////////////////////////////////////////
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LineEditor (std::string const& history);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destructor
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////////////////////////////////////////////////////////////////////////////////
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virtual ~LineEditor ();
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// -----------------------------------------------------------------------------
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// --SECTION-- static public methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @brief sort the alternatives results vector
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////////////////////////////////////////////////////////////////////////////////
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static void sortAlternatives (std::vector<std::string>&);
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// -----------------------------------------------------------------------------
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// --SECTION-- public methods
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// -----------------------------------------------------------------------------
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public:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief line editor open
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////////////////////////////////////////////////////////////////////////////////
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bool open (bool autoComplete);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief line editor shutdown
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////////////////////////////////////////////////////////////////////////////////
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bool close ();
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////////////////////////////////////////////////////////////////////////////////
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/// @brief line editor prompt
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////////////////////////////////////////////////////////////////////////////////
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std::string prompt (const std::string& prompt,
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const std::string& begin,
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bool& eof);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief get the history file path
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///
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/// The path is "$HOME" plus _historyFilename, if $HOME is set. Else
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/// the local file _historyFilename.
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////////////////////////////////////////////////////////////////////////////////
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std::string historyPath ();
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////////////////////////////////////////////////////////////////////////////////
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/// @brief add to history
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////////////////////////////////////////////////////////////////////////////////
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void addHistory (const std::string&);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief save the history
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////////////////////////////////////////////////////////////////////////////////
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bool writeHistory ();
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////////////////////////////////////////////////////////////////////////////////
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/// @brief send a signal to the shell implementation
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////////////////////////////////////////////////////////////////////////////////
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void signal ();
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// -----------------------------------------------------------------------------
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// --SECTION-- protected methods
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// -----------------------------------------------------------------------------
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief arranges for the correct creation of the the ShellImplementation
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////////////////////////////////////////////////////////////////////////////////
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void prepareShell ();
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// -----------------------------------------------------------------------------
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// --SECTION-- virtual protected methods
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// -----------------------------------------------------------------------------
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates a concrete Shell with the correct parameter
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////////////////////////////////////////////////////////////////////////////////
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virtual void initializeShell () = 0;
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// -----------------------------------------------------------------------------
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// --SECTION-- protected variables
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// -----------------------------------------------------------------------------
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protected:
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////////////////////////////////////////////////////////////////////////////////
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/// @brief the shell implementation
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////////////////////////////////////////////////////////////////////////////////
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ShellImplementation* _shellImpl;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief path to the history file
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////////////////////////////////////////////////////////////////////////////////
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std::string _history;
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};
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}
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- END-OF-FILE
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// -----------------------------------------------------------------------------
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