timewarrior/src/commands/CmdUndo.cpp

107 lines
3.3 KiB
C++

////////////////////////////////////////////////////////////////////////////////
//
// Copyright 2018, Thomas Lauf, Paul Beckingham, Federico Hernandez.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//
// https://www.opensource.org/licenses/mit-license.php
//
////////////////////////////////////////////////////////////////////////////////
#include <commands.h>
#include <timew.h>
#include <iostream>
#include <format.h>
static void undoIntervalAction(UndoAction& action, Database& database)
{
Interval before = Interval::fromJson (action.getBefore ());
Interval after = Interval::fromJson (action.getAfter ());
database.modifyInterval (after, before, false);
}
static void undoConfigAction (UndoAction& action, Rules &rules, Database& database)
{
const std::string& before = action.getBefore ();
if (before.empty ()) {
const std::string& after = action.getAfter ();
auto pos = after.find (' ');
std::string name = after.substr (0, pos);
Rules::unsetConfigVariable (database, rules, name, false);
}
else
{
auto pos = before.find ('=');
std::string name = before.substr (0, pos-1);
std::string value = before.substr (pos+1, before.length ());
Rules::setConfigVariable (database, rules, name, value, false);
}
}
////////////////////////////////////////////////////////////////////////////////
int CmdUndo (Rules& rules, Database& database)
{
Transaction transaction = database.popLastTransaction ();
std::vector <UndoAction> actions = transaction.getActions ();
if (actions.empty ())
{
// No (more) undoing...
if (rules.getBoolean ("verbose"))
{
std::cout << "Nothing to undo." << std::endl;
}
}
else
{
for (auto& action : actions)
{
// Select database...
std::string type = action.getType ();
// Rollback action...
if (type == "interval")
{
undoIntervalAction (action, database);
}
else if (type == "config")
{
undoConfigAction (action, rules, database);
}
else
{
throw format ("Unknown undo action type '{1}'", type);
}
}
if (rules.getBoolean ("verbose"))
{
std::cout << "Undo" << std::endl;
}
}
return 0;
}
////////////////////////////////////////////////////////////////////////////////