To open a directory for the purposes of inspecting its contents, we can use the std.Io.Dir.cwd().openDir() function. In this program, we will list out the files and directories in the mentioned directory dir_enumerator. We will not traverse sub directories for files in this program, lets save that for next.
const std = @import("std");
pub fn main(init: std.process.Init) !void {
const my_dir = std.Io.Dir.cwd().openDir(init.io, "./dir_enumerator", .{ .access_sub_paths = false, .follow_symlinks = false, .iterate = true }) catch {
try std.Io.File.writeStreamingAll(.stdout(), init.io, "Failed to open directory. Exiting...\n");
std.process.exit(1);
};
defer my_dir.close(init.io);
var directory_iterator = my_dir.iterate();
var buffer: [1024]u8 = undefined;
var file_writer = std.Io.File.Writer.init(.stdout(), init.io, &buffer);
var stdout_printer = &file_writer.interface;
while (directory_iterator.next(init.io) catch unreachable) |entry| {
try stdout_printer.print("{s} - {any}\n", .{ entry.name, entry.kind });
}
try stdout_printer.flush();
}
Have a dummy folder dir_enumerator and inside of it have file test1.txt, file test2.txt and sub directory subdir. Have a file subdir_file.txt inside the subdir.
The output will be
test1.txt - .file
test2.txt - .file
subdir - .directory
Thanks for reading. To be continued.
