Differential D19095 Diff 53015 src/backends/octave/octavevariablemodel.cpp

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src/backends/octave/octavevariablemodel.cpp

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		1		/*
		2		This program is free software; you can redistribute it and/or
		3		modify it under the terms of the GNU General Public License
		4		as published by the Free Software Foundation; either version 2
		5		of the License, or (at your option) any later version.
		6
		7		This program is distributed in the hope that it will be useful,
		8		but WITHOUT ANY WARRANTY; without even the implied warranty of
		9		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		10		GNU General Public License for more details.
		11
		12		You should have received a copy of the GNU General Public License
		13		along with this program; if not, write to the Free Software
		14		Foundation, Inc., 51 Franklin Street, Fifth Floor,
		15		Boston, MA 02110-1301, USA.
		16
		17		---
		18		Copyright (C) 2018 Nikita Sirgienko <warquark@gmail.com>
		19		*/
		20
		21		#include "octavevariablemodel.h"
		22		#include "octavesession.h"
		23		#include "textresult.h"
		24
		25		#include <QDebug>
		26
		27		#include "settings.h"
		28
		29		using namespace Cantor;
		30
		31		OctaveVariableModel::OctaveVariableModel(OctaveSession* session):
		32		DefaultVariableModel(session),
		33		m_expr(nullptr)
		34		{
		35		}
		36
		37		void OctaveVariableModel::update()
		38		{
		39		static const QString& cmd = QLatin1String(
		40		"printf('__cantor_delimiter_line__\\n');"
		41		"__cantor_list__ = who();"
		42		"for __cantor_index__ = 1:length(__cantor_list__)"
		43		" __cantor_varname__ = char(__cantor_list__{__cantor_index__});"
		44		" printf([__cantor_varname__ '\\n']);"
		45		" eval(['disp(' __cantor_varname__ ')']);"
		46		" printf('__cantor_delimiter_line__\\n')"
		47		"endfor;"
		48		"clear __cantor_list__;"
		49		"clear __cantor_index__;"
		50		"clear __cantor_varname__;"
		51		);
		52
		53		if (m_expr)
		54		return;
		55
		56		m_expr = session()->evaluateExpression(cmd, Expression::FinishingBehavior::DoNotDelete, true);
		57		connect(m_expr, &Expression::statusChanged, this, &OctaveVariableModel::parseNewVariables);
		58		}
		59
		60		void OctaveVariableModel::parseNewVariables(Expression::Status status)
		61		{
		62		switch(status)
		63		{
		64		case Expression::Status::Done:
		65		{
		66		static const QLatin1String delimiter("__cantor_delimiter_line__");
		67
		68		// Result always must be, if we done, so don't check it
		69		QString text = static_cast<Cantor::TextResult*>(m_expr->result())->plain();
		70		const QStringList& lines = text.split(delimiter, QString::SkipEmptyParts);
		71
		72		QList<Variable> vars;
		73		for (QString line : lines)
		74		{
		75		line = line.trimmed();
		76		const QString& name = line.section(QLatin1String("\n"), 0, 0);
		77		QString value;
		78		if (OctaveSettings::self()->variableManagement())
		79		value = line.section(QLatin1String("\n"), 1);
		80		vars << Variable{name, value};
		81		}
		82
		83		setVariables(vars);
		84		break;
		85		}
		86		default:
		87		return;
		88		}
		89
		90		m_expr->deleteLater();
		91		m_expr = nullptr;
		92		}