1 files changed, 298 insertions, 0 deletions
diff --git a/api/logic/minecraft/mod/LocalModParseTask.cpp b/api/logic/minecraft/mod/LocalModParseTask.cpp
new file mode 100644
index 00000000..22ebd7d4
--- /dev/null
+++ b/api/logic/minecraft/mod/LocalModParseTask.cpp
@@ -0,0 +1,298 @@
+#include "LocalModParseTask.h"
+
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonValue>
+#include <quazip.h>
+#include <quazipfile.h>
+
+#include "settings/INIFile.h"
+#include "FileSystem.h"
+
+namespace {
+
+// NEW format
+// https://github.com/MinecraftForge/FML/wiki/FML-mod-information-file/6f62b37cea040daf350dc253eae6326dd9c822c3
+
+// OLD format:
+// https://github.com/MinecraftForge/FML/wiki/FML-mod-information-file/5bf6a2d05145ec79387acc0d45c958642fb049fc
+std::shared_ptr<ModDetails> ReadMCModInfo(QByteArray contents)
+{
+    auto getInfoFromArray = [&](QJsonArray arr)->std::shared_ptr<ModDetails>
+    {
+        if (!arr.at(0).isObject()) {
+            return nullptr;
+        }
+        std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
+        auto firstObj = arr.at(0).toObject();
+        details->mod_id = firstObj.value("modid").toString();
+        auto name = firstObj.value("name").toString();
+        // NOTE: ignore stupid example mods copies where the author didn't even bother to change the name
+        if(name != "Example Mod") {
+            details->name = name;
+        }
+        details->version = firstObj.value("version").toString();
+        details->updateurl = firstObj.value("updateUrl").toString();
+        auto homeurl = firstObj.value("url").toString().trimmed();
+        if(!homeurl.isEmpty())
+        {
+            // fix up url.
+            if (!homeurl.startsWith("http://") && !homeurl.startsWith("https://") && !homeurl.startsWith("ftp://"))
+            {
+                homeurl.prepend("http://");
+            }
+        }
+        details->homeurl = homeurl;
+        details->description = firstObj.value("description").toString();
+        QJsonArray authors = firstObj.value("authorList").toArray();
+        if (authors.size() == 0) {
+            // FIXME: what is the format of this? is there any?
+            authors = firstObj.value("authors").toArray();
+        }
+
+        for (auto author: authors)
+        {
+            details->authors.append(author.toString());
+        }
+        details->credits = firstObj.value("credits").toString();
+        return details;
+    };
+    QJsonParseError jsonError;
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(contents, &jsonError);
+    // this is the very old format that had just the array
+    if (jsonDoc.isArray())
+    {
+        return getInfoFromArray(jsonDoc.array());
+    }
+    else if (jsonDoc.isObject())
+    {
+        auto val = jsonDoc.object().value("modinfoversion");
+        if(val.isUndefined()) {
+            val = jsonDoc.object().value("modListVersion");
+        }
+        int version = val.toDouble();
+        if (version != 2)
+        {
+            qCritical() << "BAD stuff happened to mod json:";
+            qCritical() << contents;
+            return nullptr;
+        }
+        auto arrVal = jsonDoc.object().value("modlist");
+        if(arrVal.isUndefined()) {
+            arrVal = jsonDoc.object().value("modList");
+        }
+        if (arrVal.isArray())
+        {
+            return getInfoFromArray(arrVal.toArray());
+        }
+    }
+    return nullptr;
+}
+
+// https://fabricmc.net/wiki/documentation:fabric_mod_json
+std::shared_ptr<ModDetails> ReadFabricModInfo(QByteArray contents)
+{
+    QJsonParseError jsonError;
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(contents, &jsonError);
+    auto object = jsonDoc.object();
+    auto schemaVersion = object.contains("schemaVersion") ? object.value("schemaVersion").toInt(0) : 0;
+
+    std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
+
+    details->mod_id = object.value("id").toString();
+    details->version = object.value("version").toString();
+
+    details->name = object.contains("name") ? object.value("name").toString() : details->mod_id;
+    details->description = object.value("description").toString();
+
+    if (schemaVersion >= 1)
+    {
+        QJsonArray authors = object.value("authors").toArray();
+        for (auto author: authors)
+        {
+            if(author.isObject()) {
+                details->authors.append(author.toObject().value("name").toString());
+            }
+            else {
+                details->authors.append(author.toString());
+            }
+        }
+
+        if (object.contains("contact"))
+        {
+            QJsonObject contact = object.value("contact").toObject();
+
+            if (contact.contains("homepage"))
+            {
+                details->homeurl = contact.value("homepage").toString();
+            }
+        }
+    }
+    return details;
+}
+
+std::shared_ptr<ModDetails> ReadForgeInfo(QByteArray contents)
+{
+    std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
+    // Read the data
+    details->name = "Minecraft Forge";
+    details->mod_id = "Forge";
+    details->homeurl = "http://www.minecraftforge.net/forum/";
+    INIFile ini;
+    if (!ini.loadFile(contents))
+        return details;
+
+    QString major = ini.get("forge.major.number", "0").toString();
+    QString minor = ini.get("forge.minor.number", "0").toString();
+    QString revision = ini.get("forge.revision.number", "0").toString();
+    QString build = ini.get("forge.build.number", "0").toString();
+
+    details->version = major + "." + minor + "." + revision + "." + build;
+    return details;
+}
+
+std::shared_ptr<ModDetails> ReadLiteModInfo(QByteArray contents)
+{
+    std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
+    QJsonParseError jsonError;
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(contents, &jsonError);
+    auto object = jsonDoc.object();
+    if (object.contains("name"))
+    {
+        details->mod_id = details->name = object.value("name").toString();
+    }
+    if (object.contains("version"))
+    {
+        details->version = object.value("version").toString("");
+    }
+    else
+    {
+        details->version = object.value("revision").toString("");
+    }
+    details->mcversion = object.value("mcversion").toString();
+    auto author = object.value("author").toString();
+    if(!author.isEmpty()) {
+        details->authors.append(author);
+    }
+    details->description = object.value("description").toString();
+    details->homeurl = object.value("url").toString();
+    return details;
+}
+
+}
+
+LocalModParseTask::LocalModParseTask(int token, Mod::ModType type, const QFileInfo& modFile):
+    m_token(token),
+    m_type(type),
+    m_modFile(modFile),
+    m_result(new Result())
+{
+}
+
+void LocalModParseTask::processAsZip()
+{
+    QuaZip zip(m_modFile.filePath());
+    if (!zip.open(QuaZip::mdUnzip))
+        return;
+
+    QuaZipFile file(&zip);
+
+    if (zip.setCurrentFile("mcmod.info"))
+    {
+        if (!file.open(QIODevice::ReadOnly))
+        {
+            zip.close();
+            return;
+        }
+
+        m_result->details = ReadMCModInfo(file.readAll());
+        file.close();
+        zip.close();
+        return;
+    }
+    else if (zip.setCurrentFile("fabric.mod.json"))
+    {
+        if (!file.open(QIODevice::ReadOnly))
+        {
+            zip.close();
+            return;
+        }
+
+        m_result->details = ReadFabricModInfo(file.readAll());
+        file.close();
+        zip.close();
+        return;
+    }
+    else if (zip.setCurrentFile("forgeversion.properties"))
+    {
+        if (!file.open(QIODevice::ReadOnly))
+        {
+            zip.close();
+            return;
+        }
+
+        m_result->details = ReadForgeInfo(file.readAll());
+        file.close();
+        zip.close();
+        return;
+    }
+
+    zip.close();
+}
+
+void LocalModParseTask::processAsFolder()
+{
+    QFileInfo mcmod_info(FS::PathCombine(m_modFile.filePath(), "mcmod.info"));
+    if (mcmod_info.isFile())
+    {
+        QFile mcmod(mcmod_info.filePath());
+        if (!mcmod.open(QIODevice::ReadOnly))
+            return;
+        auto data = mcmod.readAll();
+        if (data.isEmpty() || data.isNull())
+            return;
+        m_result->details = ReadMCModInfo(data);
+    }
+}
+
+void LocalModParseTask::processAsLitemod()
+{
+    QuaZip zip(m_modFile.filePath());
+    if (!zip.open(QuaZip::mdUnzip))
+        return;
+
+    QuaZipFile file(&zip);
+
+    if (zip.setCurrentFile("litemod.json"))
+    {
+        if (!file.open(QIODevice::ReadOnly))
+        {
+            zip.close();
+            return;
+        }
+
+        m_result->details = ReadLiteModInfo(file.readAll());
+        file.close();
+    }
+    zip.close();
+}
+
+void LocalModParseTask::run()
+{
+    switch(m_type)
+    {
+        case Mod::MOD_ZIPFILE:
+            processAsZip();
+            break;
+        case Mod::MOD_FOLDER:
+            processAsFolder();
+            break;
+        case Mod::MOD_LITEMOD:
+            processAsLitemod();
+            break;
+        default:
+            break;
+    }
+    emit finished(m_token);
+}