1//! Checks that the basename of the given path matches a string.
 2//!
 3//! Usage:
 4//!
 5//! ```
 6//! has_basename <path> <basename>
 7//! ```
 8//!
 9//! <path> must be absolute.
10//!
11//! Returns a non-zero exit code if basename
12//! does not match the given string.
13
14const std = @import("std");
15
16pub fn main() !void {
17    var arena_state = std.heap.ArenaAllocator.init(std.heap.page_allocator);
18    const arena = arena_state.allocator();
19    defer arena_state.deinit();
20
21    try run(arena);
22}
23
24fn run(allocator: std.mem.Allocator) !void {
25    var args = try std.process.argsWithAllocator(allocator);
26    defer args.deinit();
27    _ = args.next() orelse unreachable; // skip binary name
28
29    const path = args.next() orelse {
30        std.log.err("missing <path> argument", .{});
31        return error.BadUsage;
32    };
33
34    const basename = args.next() orelse {
35        std.log.err("missing <basename> argument", .{});
36        return error.BadUsage;
37    };
38
39    const actual_basename = std.fs.path.basename(path);
40    if (std.mem.eql(u8, actual_basename, basename)) {
41        return;
42    }
43
44    return error.NotEqual;
45}