2812a8c77a
It's possible to call getDOM without a contextual task. Previously, this was done by referencing a "dummy" task which necessitated a way to distinguish such dummy tasks. This switches to using a pointer and treating the NULL value as meaning there is no context. Note that this cannot use `std::optional<&Task>`, as optional does not support reference types.
96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2006 - 2021, Tomas Babej, 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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// https://www.opensource.org/licenses/mit-license.php
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//
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////////////////////////////////////////////////////////////////////////////////
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#include <cmake.h>
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#include <CmdGet.h>
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#include <Variant.h>
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#include <Context.h>
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#include <DOM.h>
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#include <main.h>
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#include <shared.h>
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#include <format.h>
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////////////////////////////////////////////////////////////////////////////////
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CmdGet::CmdGet ()
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{
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_keyword = "_get";
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_usage = "task _get <DOM> [<DOM> ...]";
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_description = "DOM Accessor";
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_read_only = true;
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_displays_id = false;
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_needs_gc = false;
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_uses_context = false;
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_accepts_filter = false;
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_accepts_modifications = false;
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_accepts_miscellaneous = true;
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_category = Command::Category::internal;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Rely on the Lexer to correctly identify DOM references, then jsut iterate
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// over those.
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//
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// It is an error to specify no DOM references.
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// It is not an error for a DOM reference to resolve to a blank value.
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int CmdGet::execute (std::string& output)
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{
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std::vector <std::string> results;
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for (auto& arg : Context::getContext ().cli2._args)
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{
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switch (arg._lextype)
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{
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case Lexer::Type::dom:
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{
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Variant result;
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if (getDOM (arg.attribute ("raw"), NULL, result))
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results.emplace_back (result);
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else
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results.emplace_back ("");
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}
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break;
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// Look for non-refs to complain about.
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case Lexer::Type::word:
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case Lexer::Type::identifier:
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if (! arg.hasTag ("BINARY") &&
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! arg.hasTag ("CMD"))
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throw format ("'{1}' is not a DOM reference.", arg.attribute ("raw"));
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default:
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break;
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}
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}
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if (results.size () == 0)
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throw std::string ("No DOM reference specified.");
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output = join (" ", results);
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output += '\n';
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return 0;
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}
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////////////////////////////////////////////////////////////////////////////////
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