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Instance model (or at least something like it)

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This commit is contained in:
Petr Mrázek 2013-01-22 05:56:12 +01:00
parent f33ab9beb1
commit 00893b3cfc
12 changed files with 1002 additions and 107 deletions
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6
CMakeLists.txt
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@ -12,6 +12,8 @@ IF(${BIGENDIAN})
ADD_DEFINITIONS(-DMULTIMC_BIG_ENDIAN)
ENDIF(${BIGENDIAN})
# First, include header overrides
include_directories(hacks)
#### Find the required Qt parts ####
find_package(Qt5Widgets)
@ -101,7 +103,7 @@ main.cpp
data/appsettings.cpp
data/inifile.cpp
data/instancebase.cpp
data/instancelist.cpp
data/instancemodel.cpp
data/settingsbase.cpp
data/stdinstance.cpp
@ -123,7 +125,7 @@ gui/settingsdialog.h
data/appsettings.h
data/inifile.h
data/instancebase.h
data/instancelist.h
data/instancemodel.h
data/settingsbase.h
data/settingsmacros.h
data/settingsmacrosundef.h

17
data/inifile.cpp
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@ -49,12 +49,23 @@ bool INIFile::loadFile(QString fileName)
QStringList lines = in.readAll().split('\n');
for (int i = 0; i < lines.count(); i++)
{
QString & lineRaw = lines[i];
// Ignore comments.
QString line = lines[i].left('#').trimmed();
QString line = lineRaw.left(lineRaw.indexOf('#')).trimmed();
QString key = line.section('=', 0).trimmed();
QVariant value(line.section('=', 1).trimmed());
int eqPos = line.indexOf('=');
if(eqPos == -1)
continue;
QString key = line.left(eqPos).trimmed();
QString valueStr = line.right(line.length() - eqPos - 1).trimmed();
QVariant value(valueStr);
/*
QString dbg = key;
dbg += " = ";
dbg += valueStr;
qDebug(dbg.toLocal8Bit());
*/
this->operator [](key) = value;
}

64
data/instancebase.cpp
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@ -16,6 +16,7 @@
#include "instancebase.h"
#include <QFileInfo>
#include <QDir>
#include "../util/pathutils.h"
@ -23,10 +24,27 @@ InstanceBase::InstanceBase(QString dir, QObject *parent) :
QObject(parent),
rootDir(dir)
{
QFileInfo cfgFile;
QFileInfo cfgFile(PathCombine(rootDir, "instance.cfg"));
if (cfgFile.exists())
config.loadFile(PathCombine(rootDir, "instance.cfg"));
{
if(!config.loadFile(cfgFile.absoluteFilePath()))
{
QString debugmsg("Can't load instance config file for instance ");
debugmsg+= getInstID();
qDebug(debugmsg.toLocal8Bit());
}
}
else
{
QString debugmsg("Can't find instance config file for instance ");
debugmsg+= getInstID();
debugmsg += " : ";
debugmsg +=
debugmsg+=" ... is this an instance even?";
qDebug(debugmsg.toLocal8Bit());
}
currentGroup = nullptr;
}
QString InstanceBase::getRootDir() const
@ -47,3 +65,45 @@ void InstanceBase::setInstName(QString name)
{
config.set("name", name);
}
QString InstanceBase::getInstID() const
{
return QDir(rootDir).dirName();
}
InstanceModelItem* InstanceBase::getParent() const
{
return currentGroup;
}
QVariant InstanceBase::data ( int role ) const
{
switch(role)
{
case Qt::DisplayRole:
return getInstName();
default:
return QVariant();
}
}
int InstanceBase::getRow() const
{
return currentGroup->getIndexOf((InstanceBase*)this);
}
InstanceModelItem* InstanceBase::getChild ( int index ) const
{
return nullptr;
}
InstanceModel* InstanceBase::getModel() const
{
return currentGroup->getModel();
}
IMI_type InstanceBase::getModelItemType() const
{
return IMI_Instance;
}
int InstanceBase::numChildren() const
{
return 0;
}

20
data/instancebase.h
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@ -20,9 +20,11 @@
#include <QString>
#include "../data/inifile.h"
#include "instancemodel.h"
class InstanceBase : public QObject
class InstanceBase : public QObject, public InstanceModelItem
{
friend class InstanceGroup;
Q_OBJECT
public:
explicit InstanceBase(QString rootDir, QObject *parent = 0);
@ -32,13 +34,25 @@ public:
QString getInstName() const;
void setInstName(QString name);
protected:
QString getInstID() const;
virtual IMI_type getModelItemType() const;
virtual InstanceModelItem* getParent() const;
virtual int numChildren() const;
virtual InstanceModelItem* getChild ( int index ) const;
virtual InstanceModel* getModel() const;
virtual QVariant data ( int column ) const;
virtual int getRow() const;
private:
QString rootDir;
void setGroup ( InstanceGroup* group )
{
currentGroup = group;
};
QString rootDir;
INIFile config;
InstanceGroup * currentGroup;
};
#endif // INSTANCEBASE_H

52
data/instancelist.cpp
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@ -1,52 +0,0 @@
/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "instancelist.h"
#include <QDir>
#include <QDirIterator>
#include "stdinstance.h"
#include "../util/pathutils.h"
InstanceList::InstanceList() :
QList()
{
}
void InstanceList::addInstance(InstanceBase *inst)
{
append(inst);
}
void InstanceList::loadInstances(QString dir)
{
qDebug("Loading instances");
QDir instDir(dir);
QDirIterator iter(instDir);
while (iter.hasNext())
{
QString subDir = iter.next();
if (QFileInfo(PathCombine(subDir, "instance.cfg")).exists())
{
// TODO Differentiate between different instance types.
InstanceBase* inst = new StdInstance(subDir);
addInstance(inst);
}
}
}

38
data/instancelist.h
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@ -1,38 +0,0 @@
/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INSTANCELIST_H
#define INSTANCELIST_H
#include <QList>
#include "instancebase.h"
class InstanceList : public QList<InstanceBase*>
{
public:
explicit InstanceList();
void addInstance(InstanceBase *inst);
void loadInstances(QString dir);
signals:
public slots:
};
#endif // INSTANCELIST_H

403
data/instancemodel.cpp Normal file
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@ -0,0 +1,403 @@
/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "instancemodel.h"
#include <QString>
#include <QDir>
#include <QDirIterator>
#include "stdinstance.h"
#include "../util/pathutils.h"
#include <boost/property_tree/json_parser.hpp>
#include <boost/foreach.hpp>
#define GROUP_FILE_FORMAT_VERSION 1
InstanceModel::InstanceModel( QObject* parent ) :
QAbstractItemModel()
{
}
InstanceModel::~InstanceModel()
{
saveGroupInfo();
for(int i = 0; i < groups.size(); i++)
{
delete groups[i];
}
}
void InstanceModel::addInstance( InstanceBase* inst, const QString& groupName )
{
auto group = getGroupByName(groupName);
group->addInstance(inst);
}
void InstanceGroup::addInstance ( InstanceBase* inst )
{
instances.append(inst);
inst->setGroup(this);
// TODO: notify model.
}
void InstanceModel::initialLoad(QString dir)
{
groupFile = dir + "/instgroups.json";
implicitGroup = new InstanceGroup("Ungrouped", this);
groups.append(implicitGroup);
// temporary map from instance ID to group name
QMap<QString, QString> groupMap;
using namespace boost::property_tree;
ptree pt;
try
{
read_json(groupFile.toStdString(), pt);
if (pt.get_optional<int>("formatVersion") != GROUP_FILE_FORMAT_VERSION)
{
// TODO: Discard old formats.
}
BOOST_FOREACH(const ptree::value_type& vp, pt.get_child("groups"))
{
ptree gPt = vp.second;
QString groupName = QString::fromUtf8(vp.first.c_str());
InstanceGroup *group = new InstanceGroup(groupName, this);
groups.push_back(group);
if (gPt.get_child_optional("hidden"))
group->setHidden(gPt.get<bool>("hidden"));
QVector<QString> groupInstances;
BOOST_FOREACH(const ptree::value_type& v, gPt.get_child("instances"))
{
QString key = QString::fromUtf8(v.second.data().c_str());
groupMap[key] = groupName;
}
}
}
catch (json_parser_error e)
{
qDebug("Failed to read group list. JSON parser error.");
// wxLogError(_(),
// e.line(), wxStr(e.message()).c_str());
}
catch (ptree_error e)
{
qDebug("Failed to read group list. Unknown ptree error.");
}
qDebug("Loading instances");
QDir instDir(dir);
QDirIterator iter(instDir);
while (iter.hasNext())
{
QString subDir = iter.next();
if (QFileInfo(PathCombine(subDir, "instance.cfg")).exists())
{
// TODO Differentiate between different instance types.
InstanceBase* inst = new StdInstance(subDir);
QString instID = inst->getInstID();
auto iter = groupMap.find(instID);
if(iter != groupMap.end())
{
addInstance(inst,iter.value());
}
else
{
addInstance(inst);
}
}
}
}
int InstanceModel::columnCount ( const QModelIndex& parent ) const
{
// for now...
return 1;
}
QVariant InstanceModel::data ( const QModelIndex& index, int role ) const
{
if (!index.isValid())
return QVariant();
if (role != Qt::DisplayRole)
return QVariant();
InstanceModelItem *item = static_cast<InstanceModelItem*>(index.internalPointer());
return item->data(index.column());
}
QModelIndex InstanceModel::index ( int row, int column, const QModelIndex& parent ) const
{
if (!hasIndex(row, column, parent))
return QModelIndex();
InstanceModelItem *parentItem;
if (!parent.isValid())
parentItem = (InstanceModelItem *) this;
else
parentItem = static_cast<InstanceModelItem*>(parent.internalPointer());
InstanceModelItem *childItem = parentItem->getChild(row);
if (childItem)
return createIndex(row, column, childItem);
else
return QModelIndex();
}
QModelIndex InstanceModel::parent ( const QModelIndex& index ) const
{
if (!index.isValid())
return QModelIndex();
InstanceModelItem *childItem = static_cast<InstanceModelItem*>(index.internalPointer());
InstanceModelItem *parentItem = childItem->getParent();
if (parentItem == this)
return QModelIndex();
return createIndex(parentItem->getRow(), 0, parentItem);
}
int InstanceModel::rowCount ( const QModelIndex& parent ) const
{
InstanceModelItem *parentItem;
if (parent.column() > 0)
return 0;
if (!parent.isValid())
parentItem = (InstanceModelItem*) this;
else
parentItem = static_cast<InstanceModelItem*>(parent.internalPointer());
return parentItem->numChildren();
}
bool InstanceModel::saveGroupInfo() const
{
/*
using namespace boost::property_tree;
ptree pt;
pt.put<int>("formatVersion", GROUP_FILE_FORMAT_VERSION);
try
{
typedef QMap<InstanceGroup *, QVector<InstanceBase*> > GroupListMap;
GroupListMap groupLists;
for (auto iter = instances.begin(); iter != instances.end(); iter++)
{
InstanceGroup *group = getInstanceGroup(*iter);
if (group != nullptr)
groupLists[group].push_back(*iter);
}
ptree groupsPtree;
for (auto iter = groupLists.begin(); iter != groupLists.end(); iter++)
{
auto group = iter.key();
auto & gList = iter.value();
ptree groupTree;
groupTree.put<bool>("hidden", group->isHidden());
ptree instList;
for (auto iter2 = gList.begin(); iter2 != gList.end(); iter2++)
{
std::string instID((*iter2)->getInstID().toUtf8());
instList.push_back(std::make_pair("", ptree(instID)));
}
groupTree.put_child("instances", instList);
groupsPtree.push_back(std::make_pair(std::string(group->getName().toUtf8()), groupTree));
}
pt.put_child("groups", groupsPtree);
write_json(groupFile.toStdString(), pt);
}
catch (json_parser_error e)
{
// wxLogError(_("Failed to read group list.\nJSON parser error at line %i: %s"),
// e.line(), wxStr(e.message()).c_str());
return false;
}
catch (ptree_error e)
{
// wxLogError(_("Failed to save group list. Unknown ptree error."));
return false;
}
return true;
*/
return false;
}
void InstanceModel::setInstanceGroup ( InstanceBase* inst, const QString& groupName )
{
/*
InstanceGroup *prevGroup = getInstanceGroup(inst);
if (prevGroup != nullptr)
{
groupsMap.remove(inst);
}
if (!groupName.isEmpty())
{
InstanceGroup *newGroup = nullptr;
for (auto iter = root->groups.begin(); iter != root->groups.end(); iter++)
{
if ((*iter)->getName() == groupName)
{
newGroup = *iter;
}
}
if (newGroup == nullptr)
{
newGroup = new InstanceGroup(groupName, this);
root->groups.push_back(newGroup);
}
groupsMap[inst] = newGroup;
}
// TODO: propagate change, reflect in model, etc.
//InstanceGroupChanged(inst);
*/
}
InstanceGroup* InstanceModel::getGroupByName ( const QString& name ) const
{
for (auto iter = groups.begin(); iter != groups.end(); iter++)
{
if ((*iter)->getName() == name)
return *iter;
}
return nullptr;
}
/*
void InstanceModel::setGroupFile ( QString filename )
{
groupFile = filename;
}*/
int InstanceModel::numChildren() const
{
return groups.count();
}
InstanceModelItem* InstanceModel::getChild ( int index ) const
{
return groups[index];
}
QVariant InstanceModel::data ( int role ) const
{
switch(role)
{
case Qt::DisplayRole:
return "name";
}
return QVariant();
}
InstanceGroup::InstanceGroup(const QString& name, InstanceModel *parent)
{
this->name = name;
this->model = parent;
this->hidden = false;
}
InstanceGroup::~InstanceGroup()
{
for(int i = 0; i < instances.size(); i++)
{
delete instances[i];
}
}
QString InstanceGroup::getName() const
{
return name;
}
void InstanceGroup::setName(const QString& name)
{
this->name = name;
//TODO: propagate change
}
InstanceModelItem* InstanceGroup::getParent() const
{
return model;
}
bool InstanceGroup::isHidden() const
{
return hidden;
}
void InstanceGroup::setHidden(bool hidden)
{
this->hidden = hidden;
//TODO: propagate change
}
int InstanceGroup::getRow() const
{
return model->getIndexOf( this);
}
InstanceModelItem* InstanceGroup::getChild ( int index ) const
{
return instances[index];
}
int InstanceGroup::numChildren() const
{
return instances.size();
}
QVariant InstanceGroup::data ( int role ) const
{
switch(role)
{
case Qt::DisplayRole:
return name;
default:
return QVariant();
}
}

137
data/instancemodel.h Normal file
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@ -0,0 +1,137 @@
/* Copyright 2013 MultiMC Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef INSTANCELIST_H
#define INSTANCELIST_H
#include <QList>
#include <QMap>
#include <QSet>
#include <qabstractitemmodel.h>
enum IMI_type
{
IMI_Root,
IMI_Group,
IMI_Instance
};
class InstanceModel;
class InstanceGroup;
class InstanceBase;
class InstanceModelItem
{
public:
virtual IMI_type getModelItemType() const = 0;
virtual InstanceModelItem * getParent() const = 0;
virtual int numChildren() const = 0;
virtual InstanceModelItem * getChild(int index) const = 0;
virtual InstanceModel * getModel() const = 0;
virtual QVariant data(int role) const = 0;
virtual int getRow() const = 0;
};
class InstanceGroup : public InstanceModelItem
{
public:
InstanceGroup(const QString& name, InstanceModel * model);
~InstanceGroup();
QString getName() const;
void setName(const QString& name);
bool isHidden() const;
void setHidden(bool hidden);
virtual IMI_type getModelItemType() const
{
return IMI_Group;
}
virtual InstanceModelItem* getParent() const;
virtual InstanceModelItem* getChild ( int index ) const;
virtual int numChildren() const;
virtual InstanceModel * getModel() const
{
return model;
};
virtual QVariant data ( int column ) const;
int getIndexOf(InstanceBase * inst)
{
return instances.indexOf(inst);
};
virtual int getRow() const;
void addInstance ( InstanceBase* inst );
protected:
QString name;
InstanceModel * model;
QVector<InstanceBase*> instances;
bool hidden;
int row;
};
class InstanceModel : public QAbstractItemModel, public InstanceModelItem
{
public:
explicit InstanceModel(QObject *parent = 0);
~InstanceModel();
virtual int columnCount ( const QModelIndex& parent = QModelIndex() ) const;
virtual QVariant data ( const QModelIndex& index, int role = Qt::DisplayRole ) const;
virtual QModelIndex index ( int row, int column, const QModelIndex& parent = QModelIndex() ) const;
virtual QModelIndex parent ( const QModelIndex& child ) const;
virtual int rowCount ( const QModelIndex& parent = QModelIndex() ) const;
void addInstance(InstanceBase *inst, const QString& groupName = "Ungrouped");
void setInstanceGroup(InstanceBase *inst, const QString & groupName);
InstanceGroup* getGroupByName(const QString & name) const;
void initialLoad(QString dir);
bool saveGroupInfo() const;
virtual IMI_type getModelItemType() const
{
return IMI_Root;
}
virtual InstanceModelItem * getParent() const
{
return nullptr;
};
virtual int numChildren() const;
virtual InstanceModelItem* getChild ( int index ) const;
virtual InstanceModel* getModel() const
{
return nullptr;
};
virtual QVariant data ( int column ) const;
int getIndexOf(const InstanceGroup * grp) const
{
return groups.indexOf((InstanceGroup *) grp);
};
virtual int getRow() const
{
return 0;
};
signals:
public slots:
private:
QString groupFile;
QVector<InstanceGroup*> groups;
InstanceGroup * implicitGroup;
};
#endif // INSTANCELIST_H

5
gui/mainwindow.cpp
View File

@ -26,7 +26,8 @@ MainWindow::MainWindow(QWidget *parent) :
ui(new Ui::MainWindow)
{
ui->setupUi(this);
instList.loadInstances("instances");
instList.initialLoad("instances");
ui->instanceView->setModel(&instList);
}
MainWindow::~MainWindow()
@ -46,7 +47,7 @@ void MainWindow::on_actionViewInstanceFolder_triggered()
void MainWindow::on_actionRefresh_triggered()
{
instList.loadInstances("instances");
instList.initialLoad("instances");
}
void MainWindow::on_actionViewCentralModsFolder_triggered()

4
gui/mainwindow.h
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@ -18,7 +18,7 @@
#include <QMainWindow>
#include "../data/instancelist.h"
#include "../data/instancemodel.h"
namespace Ui
{
@ -55,7 +55,7 @@ private slots:
private:
Ui::MainWindow *ui;
InstanceList instList;
InstanceModel instList;
};
#endif // MAINWINDOW_H

30
gui/mainwindow.ui
View File

@ -6,14 +6,38 @@
<rect>
<x>0</x>
<y>0</y>
<width>600</width>
<height>400</height>
<width>739</width>
<height>657</height>
</rect>
</property>
<property name="windowTitle">
<string>MultiMC 5</string>
</property>
<widget class="QWidget" name="centralWidget"/>
<widget class="QWidget" name="centralWidget">
<layout class="QHBoxLayout" name="horizontalLayout">
<property name="spacing">
<number>0</number>
</property>
<property name="sizeConstraint">
<enum>QLayout::SetDefaultConstraint</enum>
</property>
<property name="leftMargin">
<number>0</number>
</property>
<property name="topMargin">
<number>0</number>
</property>
<property name="rightMargin">
<number>0</number>
</property>
<property name="bottomMargin">
<number>0</number>
</property>
<item>
<widget class="QTreeView" name="instanceView"/>
</item>
</layout>
</widget>
<widget class="QToolBar" name="mainToolBar">
<property name="movable">
<bool>false</bool>

333
hacks/boost/property_tree/detail/json_parser_read.hpp Normal file
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@ -0,0 +1,333 @@
// ----------------------------------------------------------------------------
// Copyright (C) 2002-2006 Marcin Kalicinski
//
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
// For more information, see www.boost.org
// ----------------------------------------------------------------------------
#ifndef BOOST_PROPERTY_TREE_DETAIL_JSON_PARSER_READ_HPP_INCLUDED
#define BOOST_PROPERTY_TREE_DETAIL_JSON_PARSER_READ_HPP_INCLUDED
//#define BOOST_SPIRIT_DEBUG
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/detail/ptree_utils.hpp>
#include <boost/property_tree/detail/json_parser_error.hpp>
#include <boost/spirit/include/classic.hpp>
#include <boost/limits.hpp>
#include <string>
#include <locale>
#include <istream>
#include <vector>
#include <algorithm>
namespace boost { namespace property_tree { namespace json_parser
{
///////////////////////////////////////////////////////////////////////
// Json parser context
template<class Ptree>
struct context
{
typedef typename Ptree::key_type::value_type Ch;
typedef std::basic_string<Ch> Str;
typedef typename std::vector<Ch>::iterator It;
Str string;
Str name;
Ptree root;
std::vector<Ptree *> stack;
struct a_object_s
{
context &c;
a_object_s(context &c): c(c) { }
void operator()(Ch) const
{
if (c.stack.empty())
c.stack.push_back(&c.root);
else
{
Ptree *parent = c.stack.back();
Ptree *child = &parent->push_back(std::make_pair(c.name, Ptree()))->second;
c.stack.push_back(child);
c.name.clear();
}
}
};
struct a_object_e
{
context &c;
a_object_e(context &c): c(c) { }
void operator()(Ch) const
{
BOOST_ASSERT(c.stack.size() >= 1);
c.stack.pop_back();
}
};
struct a_name
{
context &c;
a_name(context &c): c(c) { }
void operator()(It, It) const
{
c.name.swap(c.string);
c.string.clear();
}
};
struct a_string_val
{
context &c;
a_string_val(context &c): c(c) { }
void operator()(It, It) const
{
BOOST_ASSERT(c.stack.size() >= 1);
c.stack.back()->push_back(std::make_pair(c.name, Ptree(c.string)));
c.name.clear();
c.string.clear();
}
};
struct a_literal_val
{
context &c;
a_literal_val(context &c): c(c) { }
void operator()(It b, It e) const
{
BOOST_ASSERT(c.stack.size() >= 1);
c.stack.back()->push_back(std::make_pair(c.name,
Ptree(Str(b, e))));
c.name.clear();
c.string.clear();
}
};
struct a_char
{
context &c;
a_char(context &c): c(c) { }
void operator()(It b, It e) const
{
c.string += *b;
}
};
struct a_escape
{
context &c;
a_escape(context &c): c(c) { }
void operator()(Ch ch) const
{
switch (ch)
{
case Ch('\"'): c.string += Ch('\"'); break;
case Ch('\\'): c.string += Ch('\\'); break;
case Ch('/'): c.string += Ch('/'); break;
case Ch('b'): c.string += Ch('\b'); break;
case Ch('f'): c.string += Ch('\f'); break;
case Ch('n'): c.string += Ch('\n'); break;
case Ch('r'): c.string += Ch('\r'); break;
case Ch('t'): c.string += Ch('\t'); break;
default: BOOST_ASSERT(0);
}
}
};
struct a_unicode
{
context &c;
a_unicode(context &c): c(c) { }
void operator()(unsigned long u) const
{
//u = (std::min)(u, static_cast<unsigned long>((std::numeric_limits<Ch>::max)()));
c.string += Ch(u);
}
};
};
///////////////////////////////////////////////////////////////////////
// Json grammar
template<class Ptree>
struct json_grammar :
public boost::spirit::classic::grammar<json_grammar<Ptree> >
{
typedef context<Ptree> Context;
typedef typename Ptree::key_type::value_type Ch;
mutable Context c;
template<class Scanner>
struct definition
{
boost::spirit::classic::rule<Scanner>
root, object, member, array, item, value, string, number;
boost::spirit::classic::rule<
typename boost::spirit::classic::lexeme_scanner<Scanner>::type>
character, escape;
definition(const json_grammar &self)
{
using namespace boost::spirit::classic;
// There's a boost::assertion too, so another explicit using
// here:
using boost::spirit::classic::assertion;
// Assertions
assertion<std::string> expect_root("expected object or array");
assertion<std::string> expect_eoi("expected end of input");
assertion<std::string> expect_objclose("expected ',' or '}'");
assertion<std::string> expect_arrclose("expected ',' or ']'");
assertion<std::string> expect_name("expected object name");
assertion<std::string> expect_colon("expected ':'");
assertion<std::string> expect_value("expected value");
assertion<std::string> expect_escape("invalid escape sequence");
// JSON grammar rules
root
= expect_root(object | array)
>> expect_eoi(end_p)
;
object
= ch_p('{')[typename Context::a_object_s(self.c)]
>> (ch_p('}')[typename Context::a_object_e(self.c)]
| (list_p(member, ch_p(','))
>> expect_objclose(ch_p('}')[typename Context::a_object_e(self.c)])
)
)
;
member
= expect_name(string[typename Context::a_name(self.c)])
>> expect_colon(ch_p(':'))
>> expect_value(value)
;
array
= ch_p('[')[typename Context::a_object_s(self.c)]
>> (ch_p(']')[typename Context::a_object_e(self.c)]
| (list_p(item, ch_p(','))
>> expect_arrclose(ch_p(']')[typename Context::a_object_e(self.c)])
)
)
;
item
= expect_value(value)
;
value
= string[typename Context::a_string_val(self.c)]
| (number | str_p("true") | "false" | "null")[typename Context::a_literal_val(self.c)]
| object
| array
;
number
= !ch_p("-") >>
(ch_p("0") | (range_p(Ch('1'), Ch('9')) >> *digit_p)) >>
!(ch_p(".") >> +digit_p) >>
!(chset_p(detail::widen<Ch>("eE").c_str()) >>
!chset_p(detail::widen<Ch>("-+").c_str()) >>
+digit_p)
;
string
= +(lexeme_d[confix_p('\"', *character, '\"')])
;
character
= (anychar_p - "\\" - "\"")
[typename Context::a_char(self.c)]
| ch_p("\\") >> expect_escape(escape)
;
escape
= chset_p(detail::widen<Ch>("\"\\/bfnrt").c_str())
[typename Context::a_escape(self.c)]
| 'u' >> uint_parser<unsigned long, 16, 4, 4>()
[typename Context::a_unicode(self.c)]
;
// Debug
BOOST_SPIRIT_DEBUG_RULE(root);
BOOST_SPIRIT_DEBUG_RULE(object);
BOOST_SPIRIT_DEBUG_RULE(member);
BOOST_SPIRIT_DEBUG_RULE(array);
BOOST_SPIRIT_DEBUG_RULE(item);
BOOST_SPIRIT_DEBUG_RULE(value);
BOOST_SPIRIT_DEBUG_RULE(string);
BOOST_SPIRIT_DEBUG_RULE(number);
BOOST_SPIRIT_DEBUG_RULE(escape);
BOOST_SPIRIT_DEBUG_RULE(character);
}
const boost::spirit::classic::rule<Scanner> &start() const
{
return root;
}
};
};
template<class It, class Ch>
unsigned long count_lines(It begin, It end)
{
return static_cast<unsigned long>(std::count(begin, end, Ch('\n')) + 1);
}
template<class Ptree>
void read_json_internal(std::basic_istream<typename Ptree::key_type::value_type> &stream,
Ptree &pt,
const std::string &filename)
{
using namespace boost::spirit::classic;
typedef typename Ptree::key_type::value_type Ch;
typedef typename std::vector<Ch>::iterator It;
// Load data into vector
std::vector<Ch> v(std::istreambuf_iterator<Ch>(stream.rdbuf()),
std::istreambuf_iterator<Ch>());
if (!stream.good())
BOOST_PROPERTY_TREE_THROW(json_parser_error("read error", filename, 0));
// Prepare grammar
json_grammar<Ptree> g;
// Parse
try
{
parse_info<It> pi = parse(v.begin(), v.end(), g,
space_p | comment_p("//") | comment_p("/*", "*/"));
if (!pi.hit || !pi.full)
BOOST_PROPERTY_TREE_THROW((parser_error<std::string, It>(v.begin(), "syntax error")));
}
catch (parser_error<std::string, It> &e)
{
BOOST_PROPERTY_TREE_THROW(json_parser_error(e.descriptor, filename, count_lines<It, Ch>(v.begin(), e.where)));
}
// Swap grammar context root and pt
pt.swap(g.c.root);
}
} } }
#endif