58 lines
1.7 KiB
Zig
58 lines
1.7 KiB
Zig
const std = @import("std");
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const version = @import("version.zig");
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const usage =
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\\usage: nxdns <command>
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\\
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\\commands:
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\\ run serve DNS
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\\ check validate the configuration
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\\ export write local records to stdout
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\\ import read local records from stdin
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\\ version print version information
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\\
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;
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const exit_ok = 0;
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const exit_not_implemented = 2;
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const exit_usage = 64;
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pub fn main(init: std.process.Init) u8 {
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var args = init.minimal.args.iterate();
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_ = args.skip();
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const command = args.next() orelse return fail(init.io, usage);
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if (std.mem.eql(u8, command, "version")) {
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return print(init.io, "nxdns {s} ({s})\nzig {s}\n", .{
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version.string,
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version.git_commit,
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version.zig_version_string,
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});
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}
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for ([_][]const u8{ "run", "check", "export", "import" }) |known| {
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if (std.mem.eql(u8, command, known)) {
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_ = print(init.io, "not implemented\n", .{});
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return exit_not_implemented;
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}
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}
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return fail(init.io, usage);
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}
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fn print(io: std.Io, comptime format: []const u8, arguments: anytype) u8 {
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var buffer: [512]u8 = undefined;
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var file_writer = std.Io.File.stdout().writer(io, &buffer);
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file_writer.interface.print(format, arguments) catch return 1;
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file_writer.interface.flush() catch return 1;
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return exit_ok;
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}
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fn fail(io: std.Io, message: []const u8) u8 {
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var buffer: [512]u8 = undefined;
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var file_writer = std.Io.File.stderr().writer(io, &buffer);
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file_writer.interface.writeAll(message) catch {};
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file_writer.interface.flush() catch {};
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return exit_usage;
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}
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