Files
zaprus/src/c_api.zig
2026-01-31 20:27:55 -05:00

105 lines
3.0 KiB
Zig

// Copyright 2026 Robby Zambito
//
// This file is part of zaprus.
//
// Zaprus is free software: you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the Free Software
// Foundation, either version 3 of the License, or (at your option) any later
// version.
//
// Zaprus is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
// A PARTICULAR PURPOSE. See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with
// Zaprus. If not, see <https://www.gnu.org/licenses/>.
const std = @import("std");
const zaprus = @import("zaprus");
// Opaque types for C API
const ZaprusClient = opaque {};
const ZaprusConnection = opaque {};
const alloc = std.heap.c_allocator;
const io = std.Io.Threaded.global_single_threaded.io();
export fn zaprus_init_client() ?*ZaprusClient {
const client = alloc.create(zaprus.Client) catch return null;
client.* = zaprus.Client.init() catch {
alloc.destroy(client);
return null;
};
return @ptrCast(client);
}
export fn zaprus_deinit_client(client: ?*ZaprusClient) void {
const c: ?*zaprus.Client = @ptrCast(@alignCast(client));
if (c) |zc| {
zc.deinit();
alloc.destroy(zc);
}
}
export fn zaprus_client_send_relay(
client: ?*ZaprusClient,
payload: [*c]const u8,
payload_len: usize,
dest: [*c]const u8,
) c_int {
const c: ?*zaprus.Client = @ptrCast(@alignCast(client));
const zc = c orelse return 1;
zc.sendRelay(io, payload[0..payload_len], dest[0..4].*) catch return 1;
return 0;
}
export fn zaprus_connect(
client: ?*ZaprusClient,
payload: [*c]const u8,
payload_len: usize,
) ?*ZaprusConnection {
const c: ?*zaprus.Client = @ptrCast(@alignCast(client));
const zc = c orelse return null;
const connection = alloc.create(zaprus.Connection) catch return null;
connection.* = zc.connect(io, payload[0..payload_len]) catch {
alloc.destroy(connection);
return null;
};
return @ptrCast(connection);
}
export fn zaprus_deinit_connection(connection: ?*ZaprusConnection) void {
const c: ?*zaprus.Connection = @ptrCast(@alignCast(connection));
if (c) |zc| {
alloc.destroy(zc);
}
}
export fn zaprus_connection_next(
connection: ?*ZaprusConnection,
out: [*c]u8,
capacity: usize,
out_len: *usize,
) c_int {
const c: ?*zaprus.Connection = @ptrCast(@alignCast(connection));
const zc = c orelse return 1;
const result = zc.next(io, out[0..capacity]) catch return 1;
out_len.* = result.len;
return 0;
}
export fn zaprus_connection_send(
connection: ?*ZaprusConnection,
payload: [*c]const u8,
payload_len: usize,
) c_int {
const c: ?*zaprus.Connection = @ptrCast(@alignCast(connection));
const zc = c orelse return 1;
zc.send(io, payload[0..payload_len]) catch return 1;
return 0;
}