JSON API for register request and response This got individual commit because the request needs additional change to API builder code.

Changes

4 changed files (+134/-8)

• src/Roon/api.zig
  • @@ -30,4 +30,6 @@ browse.browse.Response,
    browse.load.Request, browse.load.Response, registry.info.Response, + registry.register.Request, + registry.register.Response, };
• src/Roon/build_api_spec.zig
  • @@ -142,14 +142,25 @@ .parameters = &.{.{ .type = self_pointer }},
    .return_type = .fromZigType([*:0]const u8), }; inline for (info.fields, 0..) |field, j| { - methods[j] = .{ - .name = std.fmt.comptimePrint("set_{s}", .{field.name}), - .parameters = &.{ - .{ .type = self_pointer }, - .{ .type = .fromZigType(CSetterValue(field.type)) }, - }, - .return_type = .{ .value = .void }, - }; + if (field.type == [][]const u8) { + methods[j] = .{ + .name = std.fmt.comptimePrint("append_{s}", .{field.name}), + .parameters = &.{ + .{ .type = self_pointer }, + .{ .type = .fromZigType([*:0]const u8) }, + }, + .return_type = .{ .value = .void }, + }; + } else { + methods[j] = .{ + .name = std.fmt.comptimePrint("set_{s}", .{field.name}), + .parameters = &.{ + .{ .type = self_pointer }, + .{ .type = .fromZigType(CSetterValue(field.type)) }, + }, + .return_type = .{ .value = .void }, + }; + } } items[i] = .{
• src/Roon/json.zig
  • @@ -69,6 +69,42 @@ .optional => |optional| .{ optional.child, true },
    else => .{ field.type, false }, }; + // Slice of strings is difficult to handle, so it gets special method. + if (UnwrappedValue == [][]const u8) { + const appender = struct { + fn append(ptr: *T, value: [*:0]const u8) callconv(.C) void { + const copy = std.heap.c_allocator.dupe(u8, std.mem.span(value)) catch { + std.log.err("Failed to copy string for {s}: out of memory", .{ + field.name, + }); + return; + }; + + const len = @field(@field(ptr, opts.field), field.name).len; + + const new_slice = std.heap.c_allocator.realloc( + @field(@field(ptr, opts.field), field.name), + len + 1, + ) catch { + std.log.err("Failed to resize {s}: out of memory", .{ + field.name, + }); + std.heap.c_allocator.free(copy); + return; + }; + + new_slice[len] = copy; + @field(@field(ptr, opts.field), field.name) = new_slice; + } + }; + + @export(&appender.append, .{ + .name = std.fmt.comptimePrint("{s}_append_{s}", .{ T.cname, field.name }), + }); + + continue; + } + const CValue = switch (@typeInfo(UnwrappedValue)) { .pointer => |pointer| switch (pointer.size) { .slice => [*:0]pointer.child,
• src/Roon/services/registry.zig
  • @@ -60,3 +60,80 @@ allocator.free(std.mem.span(self.core_id));
    } }), .{}); }; + + pub const register = struct { + pub const Request = json.Serializable(rc.RefCounted(struct { + pub const cname = "roon_registry_register_Request"; + + extension_id: ?[]const u8 = null, + display_name: ?[]const u8 = null, + display_version: ?[]const u8 = null, + publisher: ?[]const u8 = null, + email: ?[]const u8 = null, + token: ?[]const u8 = null, + required_services: [][]const u8 = &.{}, + optional_services: [][]const u8 = &.{}, + provided_services: [][]const u8 = &.{}, + + pub fn init() @This() { + return .{}; + } + + pub fn deinit(self: *const @This()) void { + inline for (@typeInfo(@This()).@"struct".fields) |field| { + if (field.type == ?[]const u8) { + if (@field(self, field.name)) |value| { + allocator.free(value); + } + continue; + } + + if (field.type == [][]const u8) { + for (@field(self, field.name)) |service| { + allocator.free(service); + } + + allocator.free(@field(self, field.name)); + continue; + } + + @compileError("Unhandled field type."); + } + } + }), .{}); + + export fn roon_registry_register_Request_new() callconv(.C) ?*Request { + return Request.new(.init()) catch return null; + } + + pub const Response = json.Deserializable(rc.RefCounted(extern struct { + pub const cname = "json_registry_register_Response"; + pub const deserializable = true; + + core_id: [*:0]const u8, + token: [*:0]const u8, + + pub fn init(raw: Raw) !@This() { + const core_id = try allocator.dupeZ(u8, raw.core_id); + errdefer allocator.free(core_id); + + const token = try allocator.dupeZ(u8, raw.token); + errdefer allocator.free(token); + + return .{ + .core_id = core_id.ptr, + .token = token.ptr, + }; + } + + pub const Raw = struct { + core_id: []const u8, + token: []const u8, + }; + + pub fn deinit(self: *const @This()) void { + allocator.free(std.mem.span(self.token)); + allocator.free(std.mem.span(self.core_id)); + } + }), .{}); + };