mirror of
https://github.com/GothenburgBitFactory/taskwarrior.git
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94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2006 - 2014, Paul Beckingham, Federico Hernandez.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// http://www.opensource.org/licenses/mit-license.php
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <Context.h>
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#include <Eval.h>
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#include <Dates.h>
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#include <main.h>
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#include <i18n.h>
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#include <CmdCalc.h>
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extern Context context;
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////////////////////////////////////////////////////////////////////////////////
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static bool domSource (const std::string& name, Variant& value)
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{
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Task t;
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std::string resolved = context.dom.get (name, t);
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if (resolved != name)
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{
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value = Variant (resolved);
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return true;
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////////////
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CmdCalc::CmdCalc ()
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{
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_keyword = "calc";
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_usage = "task calc <expression>";
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_description = STRING_CMD_CALC_USAGE;
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_read_only = true;
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_displays_id = false;
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}
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////////////////////////////////////////////////////////////////////////////////
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int CmdCalc::execute (std::string& output)
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{
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// Configurable infix/postfix
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bool infix = true;
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if (context.config.get ("expressions") == "infix")
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infix = true;
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else if (context.config.get ("expressions") == "postfix")
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infix = false;
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// Create an evaluator with DOM access.
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Eval e;
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e.addSource (namedDates);
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e.addSource (domSource);
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e.ambiguity (false); // TODO Could/should be configurable.
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// Compile all the args into one expression.
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std::string expression;
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std::vector <std::string> words = context.parser.getWords ();
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std::vector <std::string>::iterator word;
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for (word = words.begin (); word != words.end (); ++word)
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expression += *word + " ";
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// Evaluate according to preference.
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Variant result;
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if (infix)
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e.evaluateInfixExpression (expression, result);
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else
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e.evaluatePostfixExpression (expression, result);
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output = (std::string) result + "\n";
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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