clerk/internal/lsp/lsp.go (view raw)
| 1 | package lsp |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "io" |
| 6 | "log/slog" |
| 7 | "os" |
| 8 | "path/filepath" |
| 9 | |
| 10 | "go.lsp.dev/jsonrpc2" |
| 11 | "go.lsp.dev/protocol" |
| 12 | "go.lsp.dev/uri" |
| 13 | |
| 14 | "olexsmir.xyz/clerk/internal/settings" |
| 15 | "olexsmir.xyz/clerk/internal/xdg" |
| 16 | "olexsmir.xyz/clerk/journal" |
| 17 | ) |
| 18 | |
| 19 | type Server struct{ server *server } |
| 20 | |
| 21 | func NewServer(version string, configPath string) (Server, error) { |
| 22 | logger := slog.New(slog.NewTextHandler(os.Stderr, nil)) |
| 23 | if logFile, err := openLogFile(); err == nil { |
| 24 | logger = slog.New(slog.NewTextHandler(logFile, nil)) |
| 25 | } |
| 26 | |
| 27 | srv := &server{ |
| 28 | name: "clerk", |
| 29 | version: version, |
| 30 | |
| 31 | openDocs: make(map[uri.URI]docState), |
| 32 | |
| 33 | settings: settings.DefaultConfig, |
| 34 | configPath: configPath, |
| 35 | loader: journal.NewLoader(), |
| 36 | |
| 37 | log: logger, |
| 38 | } |
| 39 | srv.loader.ContentProvider = srv.bufferContent |
| 40 | return Server{srv}, nil |
| 41 | } |
| 42 | |
| 43 | func (s *Server) Run(ctx context.Context, stdin io.ReadCloser, stdout io.WriteCloser) error { |
| 44 | stream := jsonrpc2.NewStream(readWriterCloser{ |
| 45 | Reader: stdin, |
| 46 | Writer: stdout, |
| 47 | Closer: stdin, |
| 48 | }) |
| 49 | |
| 50 | _, conn, client := protocol.NewServer(ctx, s.server, stream) |
| 51 | defer conn.Close() |
| 52 | |
| 53 | s.server.client = client |
| 54 | |
| 55 | <-conn.Done() |
| 56 | return conn.Err() |
| 57 | } |
| 58 | |
| 59 | // bufferContent returns the open buffer text for a path, if any. |
| 60 | // called by the loader during include resolution; must NOT hold the loader lock. |
| 61 | func (s *server) bufferContent(path string) ([]byte, bool) { |
| 62 | s.mu.RLock() |
| 63 | defer s.mu.RUnlock() |
| 64 | st, ok := s.openDocs[uri.File(path)] |
| 65 | return []byte(st.text), ok |
| 66 | } |
| 67 | |
| 68 | type readWriterCloser struct { |
| 69 | io.Reader |
| 70 | io.Writer |
| 71 | io.Closer |
| 72 | } |
| 73 | |
| 74 | func openLogFile() (*os.File, error) { |
| 75 | dir, err := xdg.StateDir() |
| 76 | if err != nil { |
| 77 | return nil, err |
| 78 | } |
| 79 | dir = filepath.Join(dir, "clerk") |
| 80 | if err := os.MkdirAll(dir, 0o700); err != nil { |
| 81 | return nil, err |
| 82 | } |
| 83 | return os.OpenFile(filepath.Join(dir, "lsp.log"), os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o644) |
| 84 | } |