Vladimir Zagainov
c06c205b7b
- manifest: Manifest struct (files, launch config, server info), LoadManifest, LibraryFiles/ModFiles filters - launch: Game struct (Prepare/BuildCommand/Start lifecycle) - Prepare: download manifest, resolve Java, sync files with SHA-1, soft-delete unknown mods - BuildCommand: classpath assembly, variable interpolation (, , etc.), authlib-injector injection - Start: execute the assembled command - interpolate: template replacement - cleanupUnknownMods: moves untracked mods to mods_backup/ Co-Authored-By: OWL <noreply@anthropic.com>
76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
// package launch handles Minecraft process launching.
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package launch
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import (
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"encoding/json"
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"fmt"
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"os"
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)
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// Manifest describes the contents of a modpack as provided by the backend.
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type Manifest struct {
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MinecraftVersion string `json:"minecraft_version"`
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JavaVersion int `json:"java_version"`
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ServerInfo ServerInfo `json:"server_info"`
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Files []ManifestFile `json:"files"`
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Launch LaunchConfig `json:"launch"`
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}
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// ServerInfo is the game server address injected into servers.dat.
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type ServerInfo struct {
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Name string `json:"name"`
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IP string `json:"ip"`
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}
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// ManifestFile is a single file entry with SHA-1 verification.
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type ManifestFile struct {
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Path string `json:"path"`
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Hash string `json:"hash"`
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Size int64 `json:"size"`
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URL string `json:"url"`
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}
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// LaunchConfig contains the JVM and game arguments template.
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type LaunchConfig struct {
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MainClass string `json:"mainClass"`
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JVMArgs []string `json:"jvmArgs"`
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GameArgs []string `json:"gameArgs"`
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NativeLibs []string `json:"nativeLibs"`
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AuthLibInjector string `json:"authLibInjector"` // URL to authlib-injector.jar
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}
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// LoadManifest reads and parses a manifest.json from disk.
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func LoadManifest(path string) (*Manifest, error) {
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data, err := os.ReadFile(path)
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if err != nil {
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return nil, fmt.Errorf("reading manifest %s: %w", path, err)
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}
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var m Manifest
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if err := json.Unmarshal(data, &m); err != nil {
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return nil, fmt.Errorf("parsing manifest %s: %w", path, err)
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}
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return &m, nil
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}
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// LibraryFiles returns the subset of Files that are .jar libraries (classpath).
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func (m *Manifest) LibraryFiles() []ManifestFile {
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var libs []ManifestFile
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for _, f := range m.Files {
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if len(f.Path) > 4 && f.Path[len(f.Path)-4:] == ".jar" {
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libs = append(libs, f)
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}
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}
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return libs
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}
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// ModFiles returns the subset of Files that go into the mods/ directory.
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func (m *Manifest) ModFiles() []ManifestFile {
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var mods []ManifestFile
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for _, f := range m.Files {
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if len(f.Path) > 5 && f.Path[:5] == "mods/" {
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mods = append(mods, f)
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}
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}
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return mods
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}
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