diff options
| -rw-r--r-- | .gitignore | 2 | ||||
| -rw-r--r-- | build.zig | 70 | ||||
| -rw-r--r-- | index.html | 6 | ||||
| -rw-r--r-- | src/main.zig | 63 |
4 files changed, 141 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..e73c965 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +zig-cache/ +zig-out/ diff --git a/build.zig b/build.zig new file mode 100644 index 0000000..24dfe54 --- /dev/null +++ b/build.zig @@ -0,0 +1,70 @@ +const std = @import("std"); + +// Although this function looks imperative, note that its job is to +// declaratively construct a build graph that will be executed by an external +// runner. +pub fn build(b: *std.Build) void { + // Standard target options allows the person running `zig build` to choose + // what target to build for. Here we do not override the defaults, which + // means any target is allowed, and the default is native. Other options + // for restricting supported target set are available. + const target = b.standardTargetOptions(.{}); + + // Standard optimization options allow the person running `zig build` to select + // between Debug, ReleaseSafe, ReleaseFast, and ReleaseSmall. Here we do not + // set a preferred release mode, allowing the user to decide how to optimize. + const optimize = b.standardOptimizeOption(.{}); + + const exe = b.addExecutable(.{ + .name = "zigwebserver", + // In this case the main source file is merely a path, however, in more + // complicated build scripts, this could be a generated file. + .root_source_file = .{ .path = "src/main.zig" }, + .target = target, + .optimize = optimize, + }); + + // This declares intent for the executable to be installed into the + // standard location when the user invokes the "install" step (the default + // step when running `zig build`). + b.installArtifact(exe); + + // This *creates* a Run step in the build graph, to be executed when another + // step is evaluated that depends on it. The next line below will establish + // such a dependency. + const run_cmd = b.addRunArtifact(exe); + + // By making the run step depend on the install step, it will be run from the + // installation directory rather than directly from within the cache directory. + // This is not necessary, however, if the application depends on other installed + // files, this ensures they will be present and in the expected location. + run_cmd.step.dependOn(b.getInstallStep()); + + // This allows the user to pass arguments to the application in the build + // command itself, like this: `zig build run -- arg1 arg2 etc` + if (b.args) |args| { + run_cmd.addArgs(args); + } + + // This creates a build step. It will be visible in the `zig build --help` menu, + // and can be selected like this: `zig build run` + // This will evaluate the `run` step rather than the default, which is "install". + const run_step = b.step("run", "Run the app"); + run_step.dependOn(&run_cmd.step); + + // Creates a step for unit testing. This only builds the test executable + // but does not run it. + const unit_tests = b.addTest(.{ + .root_source_file = .{ .path = "src/main.zig" }, + .target = target, + .optimize = optimize, + }); + + const run_unit_tests = b.addRunArtifact(unit_tests); + + // Similar to creating the run step earlier, this exposes a `test` step to + // the `zig build --help` menu, providing a way for the user to request + // running the unit tests. + const test_step = b.step("test", "Run unit tests"); + test_step.dependOn(&run_unit_tests.step); +} diff --git a/index.html b/index.html new file mode 100644 index 0000000..251bedc --- /dev/null +++ b/index.html @@ -0,0 +1,6 @@ +<!doctype html> +<html> + <body> + <p>hi there</p> + </body> +</html>
\ No newline at end of file diff --git a/src/main.zig b/src/main.zig new file mode 100644 index 0000000..335e80c --- /dev/null +++ b/src/main.zig @@ -0,0 +1,63 @@ +const std = @import("std"); + +// extremely basic http file server +pub fn main() !void { + var allocator = std.heap.GeneralPurposeAllocator(.{}){}; + defer _ = allocator.deinit(); + const alloc = allocator.allocator(); + var svr = std.http.Server.init(alloc, .{.reuse_address = true}); + defer svr.deinit(); + const addr = try std.net.Address.resolveIp("127.0.0.1", 8080); + + try svr.listen(addr); + while (true) { + var res = try svr.accept(.{.allocator = alloc }); + defer res.deinit(); + try res.wait(); + const target = res.request.target; + const path = try std.fs.path.join(alloc, &[_][]const u8{".", target}); + defer alloc.free(path); + if (std.fs.cwd().openFile(path, .{})) |file| { + const md = try file.metadata(); + if (md.kind() == .directory) { + const index_path = try std.fs.path.join(alloc, &[_][]const u8{path, "index.html"}); + defer alloc.free(index_path); + if (std.fs.cwd().openFile(index_path, .{})) |index_file| { + const index_md = try index_file.metadata(); + try serve_file(&res, index_file, index_md); + } else |_| { + try serve_error(&res, .not_found); + } + } else { + try serve_file(&res, file, md); + } + } else |err| { + switch (err) { + error.FileNotFound => try serve_error(&res, .not_found), + else => try serve_error(&res, .bad_request), + } + } + try res.finish(); + } +} + +fn serve_file(res: *std.http.Server.Response, file: std.fs.File, md: std.fs.File.Metadata) !void { + res.transfer_encoding = .{ .content_length = md.size() }; + try res.do(); + var buf = [_]u8{0} ** 1024; + while (true) { + const read = try file.read(&buf); + if (read == 0) break; + _ = try res.write(buf[0..read]); + } +} + +fn serve_error(res: *std.http.Server.Response, status: std.http.Status) !void { + res.status = status; + const msg = + \\ <!doctype html><html><body>error!</body></html> + ; + res.transfer_encoding = . { .content_length = msg.len }; + try res.do(); + _ = try res.write(msg); +} |