Cthulhu is no longer a fork. Now it is a screen reader written in Golang.

internal/app/tentacle_repositories.go

@@ -0,0 +1,52 @@
+// Copyright (c) 2026 Storm Dragon
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package app
+
+import (
+	"errors"
+	"slices"
+
+	"git.stormux.org/storm/cthulhu/internal/tentacle"
+)
+
+func change_tentacle_repositories(repositories []tentacle.Repository, request tentacle.ManagementRequest, repository *tentacle.Repository) ([]tentacle.Repository, error) {
+	if request.Entry != nil || request.ID != "" {
+		return nil, errors.New("unexpected tentacle entry in repository request")
+	}
+	origin, err := tentacle.RepositoryURL(request.URL)
+	if err != nil {
+		return nil, err
+	}
+	next := tentacle.CloneRepositories(repositories)
+	index := slices.IndexFunc(next, func(value tentacle.Repository) bool { return value.URL == origin })
+	switch request.Action {
+	case "repository-add", "repository-refresh":
+		if repository == nil || repository.URL != origin {
+			return nil, errors.New("validated repository metadata is required")
+		}
+		candidate := tentacle.CloneRepositories([]tentacle.Repository{*repository})[0]
+		if request.Action == "repository-add" {
+			if index >= 0 {
+				return nil, errors.New("repository already added")
+			}
+			next = append(next, candidate)
+		} else {
+			if index < 0 {
+				return nil, errors.New("repository does not exist")
+			}
+			if next[index].ID != repository.ID {
+				return nil, errors.New("repository identity changed; the previous catalog was retained")
+			}
+			next[index] = candidate
+		}
+	case "repository-remove":
+		if index < 0 {
+			return nil, errors.New("repository does not exist")
+		}
+		next = slices.Delete(next, index, index+1)
+	default:
+		return nil, errors.New("unknown repository operation")
+	}
+	return next, tentacle.ValidateRepositories(next)
+}