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authorPetr Mrázek <peterix@gmail.com>2015-02-04 21:10:10 +0100
committerPetr Mrázek <peterix@gmail.com>2015-04-12 20:57:17 +0200
commit141e0a02a0a0c4bbc4cc2e900560db5048366104 (patch)
treed61b0ac7fedc656d2906f084b9a384b8047e8617 /logic/minecraft/AssetsUtils.cpp
parent473971b6e7a79ed38fa68dffacd207fda874fdc0 (diff)
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SCRATCH move things to the right places
Diffstat (limited to 'logic/minecraft/AssetsUtils.cpp')
-rw-r--r--logic/minecraft/AssetsUtils.cpp217
1 files changed, 217 insertions, 0 deletions
diff --git a/logic/minecraft/AssetsUtils.cpp b/logic/minecraft/AssetsUtils.cpp
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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 <QVariant>
+#include <QDebug>
+
+#include "AssetsUtils.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))
+ {
+ qCritical() << "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)
+ {
+ qCritical() << "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())
+ {
+ qCritical() << "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)
+ {
+ // qDebug() << 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)
+ {
+ // qDebug() << 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())
+ {
+ qCritical() << "No assets index file" << indexPath << "; can't reconstruct assets";
+ return virtualRoot;
+ }
+
+ qDebug() << "reconstructAssets" << assetsDir.path() << indexDir.path()
+ << objectDir.path() << virtualDir.path() << virtualRoot.path();
+
+ AssetsIndex index;
+ bool loadAssetsIndex = AssetsUtils::loadAssetsIndexJson(indexPath, &index);
+
+ if (loadAssetsIndex && index.isVirtual)
+ {
+ qDebug() << "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();
+ // qDebug() << target_dir;
+ if (!target_dir.exists())
+ QDir("").mkpath(target_dir.path());
+
+ bool couldCopy = original.copy(target_path);
+ qDebug() << " Copying" << original_path << "to" << target_path
+ << QString::number(couldCopy); // << original.errorString();
+ }
+ }
+
+ // TODO: Write last used time to virtualRoot/.lastused
+ }
+
+ return virtualRoot;
+}
+
+}