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const clap = @import("clap");
const std = @import("std");
const debug = std.debug;
const io = std.io;
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
defer _ = gpa.deinit();
// First we specify what parameters our program can take.
// We can use `parseParamsComptime` to parse a string into an array of `Param(Help)`
const params = comptime clap.parseParamsComptime(
\\-h, --help Display this help and exit.
\\-n, --number <usize> An option parameter, which takes a value.
\\-s, --string <str>... An option parameter which can be specified multiple times.
\\<str>...
\\
);
// Initialize our diagnostics, which can be used for reporting useful errors.
// This is optional. You can also pass `.{}` to `clap.parse` if you don't
// care about the extra information `Diagnostics` provides.
var diag = clap.Diagnostic{};
var res = clap.parse(clap.Help, ¶ms, clap.parsers.default, .{
.diagnostic = &diag,
.allocator = gpa.allocator(),
}) catch |err| {
// Report useful error and exit
diag.report(io.getStdErr().writer(), err) catch {};
return err;
};
defer res.deinit();
if (res.args.help != 0)
debug.print("--help\n", .{});
if (res.args.number) |n|
debug.print("--number = {}\n", .{n});
for (res.args.string) |s|
debug.print("--string = {s}\n", .{s});
for (res.positionals) |pos|
debug.print("{s}\n", .{pos});
}
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