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/* 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 <QDir>
#include <QDirIterator>
#include <QCryptographicHash>
#include <QJsonParseError>
#include <QJsonDocument>
#include <QJsonObject>
#include "AssetsUtils.h"
#include "MultiMC.h"
namespace AssetsUtils
{
void migrateOldAssets()
{
QDir assets_dir("assets");
if (!assets_dir.exists())
return;
assets_dir.setFilter(QDir::AllEntries | QDir::NoDotAndDotDot);
int base_length = assets_dir.path().length();
QList<QString> blacklist = {"indexes", "objects", "virtual"};
if (!assets_dir.exists("objects"))
assets_dir.mkdir("objects");
QDir objects_dir("assets/objects");
QDirIterator iterator(assets_dir, QDirIterator::Subdirectories);
int successes = 0;
int failures = 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)
{
QString filename = iterator.filePath();
QFile input(filename);
input.open(QIODevice::ReadOnly | QIODevice::WriteOnly);
QString sha1sum =
QCryptographicHash::hash(input.readAll(), QCryptographicHash::Sha1)
.toHex()
.constData();
QString object_name = filename.remove(0, base_length + 1);
QLOG_DEBUG() << "Processing" << object_name << ":" << sha1sum << input.size();
QString object_tlk = sha1sum.left(2);
QString object_tlk_dir = objects_dir.path() + "/" + object_tlk;
QDir tlk_dir(object_tlk_dir);
if (!tlk_dir.exists())
objects_dir.mkdir(object_tlk);
QString new_filename = tlk_dir.path() + "/" + sha1sum;
QFile new_object(new_filename);
if (!new_object.exists())
{
bool rename_success = input.rename(new_filename);
QLOG_DEBUG() << " Doesn't exist, copying to" << new_filename << ":"
<< QString::number(rename_success);
if (rename_success)
successes++;
else
failures++;
}
else
{
input.remove();
QLOG_DEBUG() << " Already exists, deleting original and not copying.";
}
}
}
if (successes + failures == 0)
{
QLOG_DEBUG() << "No legacy assets needed importing.";
}
else
{
QLOG_DEBUG() << "Finished copying legacy assets:" << successes << "successes and"
<< failures << "failures.";
QDirIterator cleanup_iterator(assets_dir);
while (cleanup_iterator.hasNext())
{
QString currentDir = cleanup_iterator.next();
currentDir = currentDir.remove(0, base_length + 1);
bool ignore = false;
for (QString blacklisted : blacklist)
{
if (currentDir.startsWith(blacklisted))
ignore = true;
}
if (cleanup_iterator.fileInfo().isDir() && !ignore)
{
QString path = cleanup_iterator.filePath();
QDir folder(path);
QLOG_DEBUG() << "Cleaning up legacy assets folder:" << path;
folder.removeRecursively();
}
}
}
}
/*
* 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;
}
}
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