I’m trying to walk a directory iteratively in Zig using the standard library. I open a directory using std.fs.cwd().openDir(path, .{.iterate = true}), and then make a call to ‘walk’.
fn iter_table_dir(allocator: Allocator, dir: std.fs.Dir) !void {
var walk = try dir.walk(allocator);
defer walk.deinit();
while (try walk.next()) |entry| {
if (entry.kind == .file) {
const dirname = entry.path[0 .. entry.path.len - entry.basename.len];
if (std.mem.endsWith(u8, entry.basename, "TableB_en.txt")) {
try stdout.print("->{s} {s}\n", .{ dirname, entry.basename });
} else {
try stdout.print("{s} {s}\n", .{ dirname, entry.basename });
}
} else {
try stdout.print("{s}\n", .{entry.path});
}
}
}
pub fn main() !void {
var arena_state = std.heap.ArenaAllocator.init(std.heap.page_allocator);
defer arena_state.deinit();
const arena = arena_state.allocator();
const args = try std.process.argsAlloc(arena);
if (args.len != 3) fatal("wrong number of arguments\n", .{});
var input_table_dir = try std.fs.cwd().openDir(
args[1],
.{ .iterate = true },
);
defer input_table_dir.close();
var output_code_dir = try std.fs.cwd().openDir(args[2], .{});
defer output_code_dir.close();
try iter_table_dir(arena, input_table_dir);
return std.process.cleanExit();
}
I am encountering a strange issue, however, where after iterating through 17-18 directories, all other directories are reported as empty. I have 28 directories, with 5 files in each directory. If I pass the path to one of the “empty” directories to my executable, it then shows file inside.
Am I doing something wrong, or is there a bug in the directory walking library code?
Some output from my code…
44
44/ BUFRCREX_CodeFlag_en.txt
->44/ BUFRCREX_TableB_en.txt
44/ BUFR_TableA_en.txt
44/ BUFR_TableC_en.txt
44/ BUFR_TableD_en.txt
34
34/ BUFRCREX_34_0_0_CodeFlag_en.txt
->34/ BUFRCREX_34_0_0_TableB_en.txt
34/ BUFR_34_0_0_TableA_en.txt
34/ BUFR_34_0_0_TableC_en.txt
34/ BUFR_34_0_0_TableD_en.txt
18
18/ BUFRCREX_18_1_0_CodeFlag_en.txt
->18/ BUFRCREX_18_1_0_TableB_en.txt
18/ BUFR_18_1_0_TableA_en.txt
18/ BUFR_18_1_0_TableC_en.txt
18/ BUFR_18_1_0_TableD_en.txt
19
19/ BUFRCREX_19_1_1_CodeFlag_en.txt
->19/ BUFRCREX_19_1_1_TableB_en.txt
19/ BUFR_19_1_1_TableA_en.txt
19/ BUFR_19_1_1_TableC_en.txt
19/ BUFR_19_1_1_TableD_en.txt
20
20/ BUFRCREX_20_0_0_CodeFlag_en.txt
->20/ BUFRCREX_20_0_0_TableB_en.txt
20/ BUFR_20_0_0_TableA_en.txt
20/ BUFR_20_0_0_TableC_en.txt
20/ BUFR_20_0_0_TableD_en.txt
21
21/ BUFRCREX_21_0_0_CodeFlag_en.txt
->21/ BUFRCREX_21_0_0_TableB_en.txt
21/ BUFR_21_0_0_TableA_en.txt
21/ BUFR_21_0_0_TableC_en.txt
21/ BUFR_21_0_0_TableD_en.txt
22
22/ BUFRCREX_22_0_1_CodeFlag_en.txt
->22/ BUFRCREX_22_0_1_TableB_en.txt
22/ BUFR_22_0_1_TableA_en.txt
22/ BUFR_22_0_1_TableC_en.txt
22/ BUFR_22_0_1_TableD_en.txt
23
23/ BUFRCREX_23_0_0_CodeFlag_en.txt
->23/ BUFRCREX_23_0_0_TableB_en.txt
23/ BUFR_23_0_0_TableA_en.txt
23/ BUFR_23_0_0_TableC_en.txt
23/ BUFR_23_0_0_TableD_en.txt
24
24/ BUFRCREX_24_0_0_CodeFlag_en.txt
->24/ BUFRCREX_24_0_0_TableB_en.txt
24/ BUFR_24_0_0_TableA_en.txt
24/ BUFR_24_0_0_TableC_en.txt
24/ BUFR_24_0_0_TableD_en.txt
25
25/ BUFRCREX_25_0_0_CodeFlag_en.txt
->25/ BUFRCREX_25_0_0_TableB_en.txt
25/ BUFR_25_0_0_TableA_en.txt
25/ BUFR_25_0_0_TableC_en.txt
25/ BUFR_25_0_0_TableD_en.txt
26
26/ BUFRCREX_26_1_0_CodeFlag_en.txt
->26/ BUFRCREX_26_1_0_TableB_en.txt
26/ BUFR_26_1_0_TableA_en.txt
26/ BUFR_26_1_0_TableC_en.txt
26/ BUFR_26_1_0_TableD_en.txt
27
27/ BUFRCREX_27_0_0_CodeFlag_en.txt
->27/ BUFRCREX_27_0_0_TableB_en.txt
27/ BUFR_27_0_0_TableA_en.txt
27/ BUFR_27_0_0_TableC_en.txt
27/ BUFR_27_0_0_TableD_en.txt
28
28/ BUFRCREX_28_0_0_CodeFlag_en.txt
->28/ BUFRCREX_28_0_0_TableB_en.txt
28/ BUFR_28_0_0_TableA_en.txt
28/ BUFR_28_0_0_TableC_en.txt
28/ BUFR_28_0_0_TableD_en.txt
29
29/ BUFRCREX_29_0_0_CodeFlag_en.txt
->29/ BUFRCREX_29_0_0_TableB_en.txt
29/ BUFR_29_0_0_TableA_en.txt
29/ BUFR_29_0_0_TableC_en.txt
29/ BUFR_29_0_0_TableD_en.txt
30
30/ BUFRCREX_30_0_0_CodeFlag_en.txt
->30/ BUFRCREX_30_0_0_TableB_en.txt
30/ BUFR_30_0_0_TableA_en.txt
30/ BUFR_30_0_0_TableC_en.txt
30/ BUFR_30_0_0_TableD_en.txt
31
31/ BUFRCREX_31_0_0_CodeFlag_en.txt
->31/ BUFRCREX_31_0_0_TableB_en.txt
31/ BUFR_31_0_0_TableA_en.txt
31/ BUFR_31_0_0_TableC_en.txt
31/ BUFR_31_0_0_TableD_en.txt
32
32/ BUFRCREX_32_0_0_CodeFlag_en.txt
->32/ BUFRCREX_32_0_0_TableB_en.txt
32/ BUFR_32_0_0_TableA_en.txt
32/ BUFR_32_0_0_TableC_en.txt
32/ BUFR_32_0_0_TableD_en.txt
33
33/ BUFRCREX_33_0_0_CodeFlag_en.txt
->33/ BUFRCREX_33_0_0_TableB_en.txt
33/ BUFR_33_0_0_TableA_en.txt
33/ BUFR_33_0_0_TableC_en.txt
33/ BUFR_33_0_0_TableD_en.txt
35
36
37
38
39
40
41
42
43
