fs.zig

const std = @import("std");
const fs = std.fs;
const warn = std.debug.warn;

pub fn main() !void {
    const cwd = try fs.cwd().openDir(".", fs.Dir.OpenDirOptions{
        .iterate = true,
    });

    var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
    defer arena.deinit();

    const allocator = &arena.allocator;

    try processDirectory(cwd);
}

pub fn processDirectory(dir: fs.Dir) !void {
    var it = dir.iterate();
    while (try it.next()) |item| {
        switch (item.kind) {
            std.fs.Dir.Entry.Kind.File => processFile(item.name),
            std.fs.Dir.Entry.Kind.Directory => {
                const newDir = try dir.openDir(item.name, std.fs.Dir.OpenDirOptions{});
                try processDirectory(newDir);
            },
            else => warn("{}: {}\n", .{ item.kind, item.name }),
        }
    }
}

pub fn processFile(fileName: []const u8) void {
    warn("file: {}\n", .{fileName});
}