137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
/* Copyright 2013-2021 MultiMC Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "LegacyModList.h"
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#include <FileSystem.h>
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#include <QString>
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#include <QDebug>
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LegacyModList::LegacyModList(const QString &dir, const QString &list_file)
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: m_dir(dir), m_list_file(list_file)
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{
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FS::ensureFolderPathExists(m_dir.absolutePath());
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m_dir.setFilter(QDir::Readable | QDir::NoDotAndDotDot | QDir::Files | QDir::Dirs | QDir::NoSymLinks);
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m_dir.setSorting(QDir::Name | QDir::IgnoreCase | QDir::LocaleAware);
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}
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struct OrderItem
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{
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QString id;
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bool enabled = false;
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};
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typedef QList<OrderItem> OrderList;
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static void internalSort(QList<LegacyModList::Mod> &what)
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{
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auto predicate = [](const LegacyModList::Mod &left, const LegacyModList::Mod &right)
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{
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return left.fileName().localeAwareCompare(right.fileName()) < 0;
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};
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std::sort(what.begin(), what.end(), predicate);
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}
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static OrderList readListFile(const QString &m_list_file)
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{
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OrderList itemList;
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if (m_list_file.isNull() || m_list_file.isEmpty())
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return itemList;
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QFile textFile(m_list_file);
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if (!textFile.open(QIODevice::ReadOnly | QIODevice::Text))
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return OrderList();
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QTextStream textStream;
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textStream.setAutoDetectUnicode(true);
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textStream.setDevice(&textFile);
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while (true)
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{
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QString line = textStream.readLine();
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if (line.isNull() || line.isEmpty())
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break;
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else
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{
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OrderItem it;
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it.enabled = !line.endsWith(".disabled");
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if (!it.enabled)
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{
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line.chop(9);
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}
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it.id = line;
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itemList.append(it);
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}
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}
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textFile.close();
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return itemList;
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}
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bool LegacyModList::update()
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{
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if (!m_dir.exists() || !m_dir.isReadable())
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return false;
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QList<Mod> orderedMods;
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QList<Mod> newMods;
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m_dir.refresh();
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auto folderContents = m_dir.entryInfoList();
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// first, process the ordered items (if any)
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OrderList listOrder = readListFile(m_list_file);
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for (auto item : listOrder)
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{
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QFileInfo infoEnabled(m_dir.filePath(item.id));
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QFileInfo infoDisabled(m_dir.filePath(item.id + ".disabled"));
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int idxEnabled = folderContents.indexOf(infoEnabled);
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int idxDisabled = folderContents.indexOf(infoDisabled);
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bool isEnabled;
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// if both enabled and disabled versions are present, it's a special case...
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if (idxEnabled >= 0 && idxDisabled >= 0)
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{
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// we only process the one we actually have in the order file.
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// and exactly as we have it.
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// THIS IS A CORNER CASE
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isEnabled = item.enabled;
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}
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else
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{
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// only one is present.
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// we pick the one that we found.
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// we assume the mod was enabled/disabled by external means
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isEnabled = idxEnabled >= 0;
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}
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int idx = isEnabled ? idxEnabled : idxDisabled;
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QFileInfo &info = isEnabled ? infoEnabled : infoDisabled;
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// if the file from the index file exists
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if (idx != -1)
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{
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// remove from the actual folder contents list
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folderContents.takeAt(idx);
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// append the new mod
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orderedMods.append(info);
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}
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}
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// if there are any untracked files... append them sorted at the end
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if (folderContents.size())
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{
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for (auto entry : folderContents)
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{
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newMods.append(entry);
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}
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internalSort(newMods);
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orderedMods.append(newMods);
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}
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mods.swap(orderedMods);
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return true;
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}
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