1const std = @import("std");
 2const fs = std.fs;
 3const Step = std.Build.Step;
 4const RemoveDir = @This();
 5const LazyPath = std.Build.LazyPath;
 6
 7pub const base_id: Step.Id = .remove_dir;
 8
 9step: Step,
10doomed_path: LazyPath,
11
12pub fn create(owner: *std.Build, doomed_path: LazyPath) *RemoveDir {
13    const remove_dir = owner.allocator.create(RemoveDir) catch @panic("OOM");
14    remove_dir.* = .{
15        .step = Step.init(.{
16            .id = base_id,
17            .name = owner.fmt("RemoveDir {s}", .{doomed_path.getDisplayName()}),
18            .owner = owner,
19            .makeFn = make,
20        }),
21        .doomed_path = doomed_path.dupe(owner),
22    };
23    return remove_dir;
24}
25
26fn make(step: *Step, options: Step.MakeOptions) !void {
27    _ = options;
28
29    const b = step.owner;
30    const remove_dir: *RemoveDir = @fieldParentPtr("step", step);
31
32    step.clearWatchInputs();
33    try step.addWatchInput(remove_dir.doomed_path);
34
35    const full_doomed_path = remove_dir.doomed_path.getPath2(b, step);
36
37    b.build_root.handle.deleteTree(full_doomed_path) catch |err| {
38        if (b.build_root.path) |base| {
39            return step.fail("unable to recursively delete path '{s}/{s}': {s}", .{
40                base, full_doomed_path, @errorName(err),
41            });
42        } else {
43            return step.fail("unable to recursively delete path '{s}': {s}", .{
44                full_doomed_path, @errorName(err),
45            });
46        }
47    };
48}