List directory recursively in Zig programming language

list-directory-recursively.zig

const std = @import("std");

pub fn main() !void {
    var buf: [std.fs.MAX_PATH_BYTES]u8 = undefined;
    const cwd = std.os.getcwd(&buf) catch |err| {
        std.debug.print("> [error] detecting current working directory, err={}\n", .{err});
        return;
    };

    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer if (gpa.deinit() == std.heap.Check.leak) {
        std.debug.print("> [error] memory leaked\n", .{});
    };

    var dir = std.fs.openIterableDirAbsolute(cwd, .{}) catch |err| {
        std.debug.print("> [error] cannot open directory={s}, err={}", .{ cwd, err });
        return;
    };
    defer dir.close();

    const allocator = gpa.allocator();
    var walker = try dir.walk(allocator);
    defer walker.deinit();

    while (try walker.next()) |entry| {
        try std.debug.print("{s}\n", .{entry.path});
    }

    try bw.flush(); // don't forget to flush!
}