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https://gitea.wildfiregames.com/0ad/0ad
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e908733220
Refs64bfa089afand44ec2e324eWhen a .zip file is encountered by the VFS population, it reads the info for all files in the archives. This is quite slow for the public archive (400-500ms on my computer), which means calling GetEngineInfo() repeatedly is impossible. By only opening the external mod.json, we skip most of the work. The archive can still be opened if needed as fallback. Differential Revision: https://code.wildfiregames.com/D3216 This was SVN commit r25446.
112 lines
3.1 KiB
C++
112 lines
3.1 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "ModInstaller.h"
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#include "lib/file/vfs/vfs_util.h"
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#include "ps/Filesystem.h"
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#include "ps/XML/Xeromyces.h"
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#include "scriptinterface/ScriptInterface.h"
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#include "scriptinterface/JSON.h"
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#include <fstream>
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CModInstaller::CModInstaller(const OsPath& modsdir, const OsPath& tempdir) :
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m_ModsDir(modsdir), m_TempDir(tempdir / "_modscache"), m_CacheDir("cache/")
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{
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m_VFS = CreateVfs();
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CreateDirectories(m_TempDir, 0700);
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}
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CModInstaller::~CModInstaller()
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{
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m_VFS.reset();
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DeleteDirectory(m_TempDir);
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}
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CModInstaller::ModInstallationResult CModInstaller::Install(
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const OsPath& mod,
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const std::shared_ptr<ScriptContext>& scriptContext,
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bool keepFile)
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{
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const OsPath modTemp = m_TempDir / mod.Basename() / mod.Filename().ChangeExtension(L".zip");
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CreateDirectories(modTemp.Parent(), 0700);
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if (keepFile)
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CopyFile(mod, modTemp, true);
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else
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wrename(mod, modTemp);
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// Load the mod to VFS
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if (m_VFS->Mount(m_CacheDir, m_TempDir / "") != INFO::OK)
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return FAIL_ON_VFS_MOUNT;
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CVFSFile modinfo;
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PSRETURN modinfo_status = modinfo.Load(m_VFS, m_CacheDir / modTemp.Basename() / "mod.json", false);
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m_VFS->Clear();
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if (modinfo_status != PSRETURN_OK)
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return FAIL_ON_MOD_LOAD;
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// Extract the name of the mod
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CStr modName;
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{
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ScriptInterface scriptInterface("Engine", "ModInstaller", scriptContext);
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ScriptRequest rq(scriptInterface);
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JS::RootedValue json_val(rq.cx);
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if (!Script::ParseJSON(rq, modinfo.GetAsString(), &json_val))
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return FAIL_ON_PARSE_JSON;
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JS::RootedObject json_obj(rq.cx, json_val.toObjectOrNull());
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JS::RootedValue name_val(rq.cx);
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if (!JS_GetProperty(rq.cx, json_obj, "name", &name_val))
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return FAIL_ON_EXTRACT_NAME;
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Script::FromJSVal(rq, name_val, modName);
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if (modName.empty())
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return FAIL_ON_EXTRACT_NAME;
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}
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const OsPath modDir = m_ModsDir / modName;
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const OsPath modPath = modDir / (modName + ".zip");
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// Create a directory with the following structure:
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// mod-name/
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// mod-name.zip
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// mod.json
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CreateDirectories(modDir, 0700);
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if (wrename(modTemp, modPath) != 0)
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return FAIL_ON_MOD_MOVE;
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DeleteDirectory(modTemp.Parent());
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std::ofstream mod_json((modDir / "mod.json").string8());
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if (mod_json.good())
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{
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mod_json << modinfo.GetAsString();
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mod_json.close();
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}
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else
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return FAIL_ON_JSON_WRITE;
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m_InstalledMods.emplace_back(modName);
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return SUCCESS;
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}
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const std::vector<CStr>& CModInstaller::GetInstalledMods() const
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{
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return m_InstalledMods;
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}
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