init

.github/workflows/ci.yaml

@@ -0,0 +1,40 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch:
+
+jobs:
+  build:
+    strategy:
+      fail-fast: false
+      matrix:
+        zig-version: ["0.13.0"]
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        include:
+          - zig-version: "0.12.1"
+            os: ubuntu-latest
+          - zig-version: "master"
+            check-format: true
+            os: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Zig
+        uses: mlugg/setup-zig@v1
+        with:
+          version: ${{ matrix.zig-version }}
+
+      - if: ${{ matrix.check-format }}
+        name: Check Formatting
+        run: zig fmt --ast-check --check .
+
+      - name: Build
+        run: zig build --summary all

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE-NATS_C

@@ -0,0 +1,201 @@
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+
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build.zig

@@ -0,0 +1,162 @@
+const std = @import("std");
+
+pub fn build(b: *std.Build) void {
+    const target = b.standardTargetOptions(.{});
+    const optimize = b.standardOptimizeOption(.{});
+
+    const enable_tls = b.option(bool, "enable-tls", "Build TLS support (default: true)") orelse true;
+    const tls_verify = b.option(bool, "force-host-verify", "Force hostname verification for TLS connections (default: true)") orelse true;
+    const enable_streaming = b.option(bool, "enable-streaming", "Build with streaming support (default: true)") orelse true;
+
+    const upstream = b.dependency("nats_c", .{});
+    const tls_dep = if (enable_tls) b.lazyDependency(
+        "libressl",
+        .{ .target = target, .optimize = optimize },
+    ) else null;
+    const protobuf_runtime = if (enable_streaming) b.lazyDependency(
+        "protobuf_c",
+        .{ .target = target, .optimize = optimize },
+    ) else null;
+
+    const lib = b.addStaticLibrary(.{
+        .name = "nats",
+        .target = target,
+        .optimize = optimize,
+    });
+
+    const cflags: []const []const u8 = &.{};
+
+    const src_root = upstream.path("src");
+
+    lib.linkLibC();
+    lib.addCSourceFiles(.{
+        .root = src_root,
+        .files = common_sources,
+        .flags = cflags,
+    });
+    lib.addIncludePath(upstream.path("include"));
+
+    const tinfo = target.result;
+    switch (tinfo.os.tag) {
+        .windows => {
+            lib.defineCMacro("_WIN32", null);
+            lib.addCSourceFiles(.{
+                .root = src_root,
+                .files = win_sources,
+                .flags = cflags,
+            });
+            lib.linkSystemLibrary("ws2_32");
+        },
+        else => if (tinfo.isDarwin()) {
+            lib.defineCMacro("DARWIN", null);
+            lib.addCSourceFiles(.{
+                .root = src_root,
+                .files = unix_sources,
+                .flags = cflags,
+            });
+        } else {
+            lib.defineCMacro("_GNU_SOURCE", null);
+            lib.defineCMacro("LINUX", null);
+            lib.addCSourceFiles(.{
+                .root = src_root,
+                .files = unix_sources,
+                .flags = cflags,
+            });
+            // just following the cmake logic
+            if (!tinfo.isAndroid()) {
+                lib.linkSystemLibrary("pthread");
+                lib.linkSystemLibrary("rt");
+            }
+        },
+    }
+
+    lib.defineCMacro("_REENTRANT", null);
+
+    for (install_headers) |header| {
+        lib.installHeader(
+            upstream.path(b.pathJoin(&.{ "src", header })),
+            b.pathJoin(&.{ "nats", header }),
+        );
+    }
+
+    if (tls_dep) |dep| {
+        lib.defineCMacro("NATS_HAS_TLS", null);
+        lib.defineCMacro("NATS_USE_OPENSSL_1_1", null);
+        if (tls_verify)
+            lib.defineCMacro("NATS_FORCE_HOST_VERIFICATION", null);
+        lib.linkLibrary(dep.artifact("ssl"));
+    }
+
+    if (protobuf_runtime) |dep| {
+        lib.addIncludePath(upstream.path("deps"));
+        lib.addIncludePath(upstream.path("stan"));
+        lib.defineCMacro("NATS_HAS_STREAMING", null);
+
+        lib.addCSourceFiles(.{
+            .root = src_root,
+            .files = streaming_sources,
+            .flags = cflags,
+        });
+        lib.linkLibrary(dep.artifact("protobuf_c"));
+    }
+
+    b.installArtifact(lib);
+}
+
+const install_headers: []const []const u8 = &.{
+    "nats.h",
+    "status.h",
+    "version.h",
+};
+
+const common_sources: []const []const u8 = &.{
+    "asynccb.c",
+    "comsock.c",
+    "crypto.c",
+    "js.c",
+    "kv.c",
+    "nats.c",
+    "nkeys.c",
+    "opts.c",
+    "pub.c",
+    "stats.c",
+    "sub.c",
+    "url.c",
+    "buf.c",
+    "conn.c",
+    "hash.c",
+    "jsm.c",
+    "msg.c",
+    "natstime.c",
+    "nuid.c",
+    "parser.c",
+    "srvpool.c",
+    "status.c",
+    "timer.c",
+    "util.c",
+};
+
+const unix_sources: []const []const u8 = &.{
+    "unix/cond.c",
+    "unix/mutex.c",
+    "unix/sock.c",
+    "unix/thread.c",
+};
+
+const win_sources: []const []const u8 = &.{
+    "win/cond.c",
+    "win/mutex.c",
+    "win/sock.c",
+    "win/strings.c",
+    "win/thread.c",
+};
+
+const streaming_sources: []const []const u8 = &.{
+    "stan/conn.c",
+    "stan/copts.c",
+    "stan/msg.c",
+    "stan/protocol.pb-c.c",
+    "stan/pub.c",
+    "stan/sopts.c",
+    "stan/sub.c",
+};

build.zig.zon

@@ -0,0 +1,28 @@
+.{
+    .name = "nats_c",
+    .version = "3.8.2",
+    .minimum_zig_version = "0.12.0",
+    .dependencies = .{
+        .nats_c = .{
+            .url = "git+https://github.com/nats-io/nats.c?ref=v3.8.2#d58bb6b5bf205684bb72bb28407687aacf6ff498",
+            .hash = "12207f10bd4b38309c79eadf22dfb3d9f134f1359dda01f9df6d9b42734ee2330b72",
+        },
+        .libressl = .{
+            .url = "git+https://github.com/allyourcodebase/libressl.git?ref=3.9.2#a373b82991947b694196ee630bd6a648d71e2b3f",
+            .hash = "1220b1536d43ed8ce79ee05c53929f90b67dd299e61dfa249fa8f476f17eee46a95f",
+            .lazy = true,
+        },
+        .protobuf_c = .{
+            .url = "git+https://github.com/allyourcodebase/protobuf-c.git?ref=1.5.0#ae7587481485e615d3866861703d41d3efc22b82",
+            .hash = "1220f454bf9412333c5d21b8c21b323fc7e4e37b02341bf2fa49f110b8bc5d97c972",
+            .lazy = true,
+        },
+    },
+    .paths = .{
+        "build.zig",
+        "build.zig.zon",
+        "LICENSE",
+        "LICENSE-NATS_C",
+        "readme.md",
+    },
+}

readme.md

@@ -0,0 +1,57 @@
+# NATS.c
+
+This is the [NATS C client library][nats.c], packaged for [Zig](https://ziglang.org/).
+
+## Status
+
+This library only explicitly supports Linux, macOS, and Windows operating systems. Building for other platforms is currently untested, so your mileage may vary.
+
+## Zig Bindings
+
+The following projects provide Zig language bindings to the NATS.c library:
+
+- [`epicyclic-dev/nats-client`][epicyclic-dev-bindings]
+
+## Usage
+
+First, update your `build.zig.zon`:
+
+```sh
+# Initialize a `zig build` project if you haven't already
+zig init
+# replace <refname> with the version you want to use, e.g. 3.8.2
+zig fetch --save git+https://github.com/allyourcodebase/nats.c.git#<refname>
+```
+
+You can then import `nats_c` in your `build.zig` with:
+
+```zig
+const nats_c_dep = b.dependency("nats_c", .{
+    .target = target,
+    .optimize = optimize,
+    .@"enable-tls" = true, // enable SSL/TLS support
+    .@"force-host-verify" = true, // force hostname verification for TLS connections
+    .@"enable-streaming" = true, // build with support for NATS streaming extensions
+});
+your_exe.linkLibrary(nats_c_dep.artifact("nats_c"));
+```
+
+## Dependencies
+
+The NATS.c library has two optional dependencies:
+
+- [`libressl`][libressl] when building with `enable-tls`
+- [`protobuf-c`][protobuf-c] when building with `enable-streaming`
+
+These dependencies are currently automatically retrieved and compiled as static libraries by the Zig build system.
+
+## Version Support Matrix
+
+|  Refname | NATS.c Version | Zig `0.12.x` | Zig `0.13.x` | Zig `0.14.0-dev` |
+|----------|----------------|--------------|--------------|------------------|
+| `3.8.2`  | `3.8.2`        | ✅           | ✅          | ✅              |
+
+[nats.c]: https://github.com/nats-io/nats.c
+[libressl]: https://github.com/allyourcodebase/libressl
+[protobuf-c]: https://github.com/allyourcodebase/protobuf-c
+[epicyclic-dev-bindings]: https://github.com/epicyclic-dev/nats-client