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/* Copyright 2013-2015 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 <QDir>
#include <QDirIterator>
#include <QCryptographicHash>
#include <QJsonParseError>
#include <QJsonDocument>
#include <QJsonObject>
#include "AssetsUtils.h"
#include "MultiMC.h"
#include <pathutils.h>
namespace AssetsUtils
{
int findLegacyAssets()
{
QDir assets_dir("assets");
if (!assets_dir.exists())
return 0;
assets_dir.setFilter(QDir::AllEntries | QDir::NoDotAndDotDot);
int base_length = assets_dir.path().length();
QList<QString> blacklist = {"indexes", "objects", "virtual"};
QDirIterator iterator(assets_dir, QDirIterator::Subdirectories);
int found = 0;
while (iterator.hasNext())
{
QString currentDir = iterator.next();
currentDir = currentDir.remove(0, base_length + 1);
bool ignore = false;
for (QString blacklisted : blacklist)
{
if (currentDir.startsWith(blacklisted))
ignore = true;
}
if (!iterator.fileInfo().isDir() && !ignore)
{
found++;
}
}
return found;
}
/*
* Returns true on success, with index populated
* index is undefined otherwise
*/
bool loadAssetsIndexJson(QString path, AssetsIndex *index)
{
/*
{
"objects": {
"icons/icon_16x16.png": {
"hash": "bdf48ef6b5d0d23bbb02e17d04865216179f510a",
"size": 3665
},
...
}
}
}
*/
QFile file(path);
// Try to open the file and fail if we can't.
// TODO: We should probably report this error to the user.
if (!file.open(QIODevice::ReadOnly))
{
QLOG_ERROR() << "Failed to read assets index file" << path;
return false;
}
// Read the file and close it.
QByteArray jsonData = file.readAll();
file.close();
QJsonParseError parseError;
QJsonDocument jsonDoc = QJsonDocument::fromJson(jsonData, &parseError);
// Fail if the JSON is invalid.
if (parseError.error != QJsonParseError::NoError)
{
QLOG_ERROR() << "Failed to parse assets index file:" << parseError.errorString()
<< "at offset " << QString::number(parseError.offset);
return false;
}
// Make sure the root is an object.
if (!jsonDoc.isObject())
{
QLOG_ERROR() << "Invalid assets index JSON: Root should be an array.";
return false;
}
QJsonObject root = jsonDoc.object();
QJsonValue isVirtual = root.value("virtual");
if (!isVirtual.isUndefined())
{
index->isVirtual = isVirtual.toBool(false);
}
QJsonValue objects = root.value("objects");
QVariantMap map = objects.toVariant().toMap();
for (QVariantMap::const_iterator iter = map.begin(); iter != map.end(); ++iter)
{
// QLOG_DEBUG() << iter.key();
QVariant variant = iter.value();
QVariantMap nested_objects = variant.toMap();
AssetObject object;
for (QVariantMap::const_iterator nested_iter = nested_objects.begin();
nested_iter != nested_objects.end(); ++nested_iter)
{
// QLOG_DEBUG() << nested_iter.key() << nested_iter.value().toString();
QString key = nested_iter.key();
QVariant value = nested_iter.value();
if (key == "hash")
{
object.hash = value.toString();
}
else if (key == "size")
{
object.size = value.toDouble();
}
}
index->objects.insert(iter.key(), object);
}
return true;
}
QDir reconstructAssets(QString assetsId)
{
QDir assetsDir = QDir("assets/");
QDir indexDir = QDir(PathCombine(assetsDir.path(), "indexes"));
QDir objectDir = QDir(PathCombine(assetsDir.path(), "objects"));
QDir virtualDir = QDir(PathCombine(assetsDir.path(), "virtual"));
QString indexPath = PathCombine(indexDir.path(), assetsId + ".json");
QFile indexFile(indexPath);
QDir virtualRoot(PathCombine(virtualDir.path(), assetsId));
if (!indexFile.exists())
{
QLOG_ERROR() << "No assets index file" << indexPath << "; can't reconstruct assets";
return virtualRoot;
}
QLOG_DEBUG() << "reconstructAssets" << assetsDir.path() << indexDir.path()
<< objectDir.path() << virtualDir.path() << virtualRoot.path();
AssetsIndex index;
bool loadAssetsIndex = AssetsUtils::loadAssetsIndexJson(indexPath, &index);
if (loadAssetsIndex && index.isVirtual)
{
QLOG_INFO() << "Reconstructing virtual assets folder at" << virtualRoot.path();
for (QString map : index.objects.keys())
{
AssetObject asset_object = index.objects.value(map);
QString target_path = PathCombine(virtualRoot.path(), map);
QFile target(target_path);
QString tlk = asset_object.hash.left(2);
QString original_path =
PathCombine(PathCombine(objectDir.path(), tlk), asset_object.hash);
QFile original(original_path);
if (!original.exists())
continue;
if (!target.exists())
{
QFileInfo info(target_path);
QDir target_dir = info.dir();
// QLOG_DEBUG() << target_dir;
if (!target_dir.exists())
QDir("").mkpath(target_dir.path());
bool couldCopy = original.copy(target_path);
QLOG_DEBUG() << " Copying" << original_path << "to" << target_path
<< QString::number(couldCopy); // << original.errorString();
}
}
// TODO: Write last used time to virtualRoot/.lastused
}
return virtualRoot;
}
}
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