mirror of
https://github.com/MultiMC/MultiMC5.git
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179 lines
3.8 KiB
C++
179 lines
3.8 KiB
C++
/*
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* Copyright 2020 Petr Mrázek
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*
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* This source is subject to the Microsoft Permissive License (MS-PL).
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* Please see the COPYING.md file for more information.
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*/
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#pragma once
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#include <QString>
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#include <map>
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#include <set>
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#include <QStringList>
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#include "tasks/Task.h"
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namespace mojang_files {
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using Hash = QString;
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extern const Hash empty_hash;
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// simple-ish path implementation. assumes always relative and does not allow '..' entries
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class Path
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{
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public:
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using parts_type = QStringList;
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Path() = default;
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Path(QString string) {
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auto parts_in = string.split('/');
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for(auto & part: parts_in) {
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if(part.isEmpty() || part == ".") {
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continue;
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}
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if(part == "..") {
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if(parts.size()) {
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parts.pop_back();
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}
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continue;
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}
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parts.push_back(part);
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}
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}
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bool has_parent_path() const
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{
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return parts.size() > 0;
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}
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Path parent_path() const
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{
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if (parts.empty())
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return Path();
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return Path(parts.begin(), std::prev(parts.end()));
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}
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bool empty() const
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{
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return parts.empty();
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}
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int length() const
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{
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return parts.length();
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}
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bool operator==(const Path & rhs) const {
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return parts == rhs.parts;
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}
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bool operator!=(const Path & rhs) const {
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return parts != rhs.parts;
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}
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inline bool operator<(const Path& rhs) const
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{
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return compare(rhs) < 0;
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}
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parts_type::const_iterator begin() const
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{
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return parts.begin();
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}
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parts_type::const_iterator end() const
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{
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return parts.end();
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}
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QString toString() const {
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return parts.join("/");
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}
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private:
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Path(const parts_type::const_iterator & start, const parts_type::const_iterator & end) {
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auto cursor = start;
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while(cursor != end) {
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parts.push_back(*cursor);
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cursor++;
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}
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}
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int compare(const Path& p) const;
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parts_type parts;
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};
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enum class Compression {
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Raw,
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Lzma,
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Unknown
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};
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struct FileSource
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{
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Compression compression = Compression::Unknown;
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Hash hash;
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QString url;
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std::size_t size = 0;
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void upgrade(const FileSource & other) {
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if(compression == Compression::Unknown || other.size < size) {
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*this = other;
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}
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}
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bool isBad() const {
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return compression == Compression::Unknown;
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}
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};
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struct File
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{
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Hash hash;
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bool executable;
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std::uint64_t size = 0;
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};
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struct Package {
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static Package fromInspectedFolder(const QString &folderPath);
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static Package fromManifestFile(const QString &path);
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static Package fromManifestContents(const QByteArray& contents);
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explicit operator bool() const
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{
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return valid;
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}
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void addFolder(Path folder);
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void addFile(const Path & path, const File & file);
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void addLink(const Path & path, const Path & target);
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void addSource(const FileSource & source);
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std::map<Hash, FileSource> sources;
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bool valid = true;
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std::set<Path> folders;
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std::map<Path, File> files;
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std::map<Path, Path> symlinks;
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};
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struct FileDownload : FileSource
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{
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FileDownload(const FileSource& source, bool executable) {
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static_cast<FileSource &> (*this) = source;
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this->executable = executable;
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}
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bool executable = false;
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};
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struct UpdateOperations {
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static UpdateOperations resolve(const Package & from, const Package & to);
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bool valid = false;
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std::vector<Path> deletes;
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std::vector<Path> rmdirs;
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std::vector<Path> mkdirs;
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std::map<Path, FileDownload> downloads;
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std::map<Path, Path> mklinks;
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std::map<Path, bool> executable_fixes;
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};
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}
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