1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
const std = @import("std");
const assert = std.debug.assert;
const info = std.log.info;
const fatal = std.process.fatal;
const Allocator = std.mem.Allocator;
var general_purpose_allocator = std.heap.GeneralPurposeAllocator(.{}){};
const gpa = general_purpose_allocator.allocator();
const usage =
\\gen_macos_headers_c [dir]
\\
\\General Options:
\\-h, --help Print this help and exit
;
pub fn main() anyerror!void {
var arena_allocator = std.heap.ArenaAllocator.init(gpa);
defer arena_allocator.deinit();
const arena = arena_allocator.allocator();
const args = try std.process.argsAlloc(arena);
if (args.len == 1) fatal("no command or option specified", .{});
var positionals = std.array_list.Managed([]const u8).init(arena);
for (args[1..]) |arg| {
if (std.mem.eql(u8, arg, "--help") or std.mem.eql(u8, arg, "-h")) {
return info(usage, .{});
} else try positionals.append(arg);
}
if (positionals.items.len != 1) fatal("expected one positional argument: [dir]", .{});
var dir = try std.fs.cwd().openDir(positionals.items[0], .{ .no_follow = true });
defer dir.close();
var paths = std.array_list.Managed([]const u8).init(arena);
try findHeaders(arena, dir, "", &paths);
const SortFn = struct {
pub fn lessThan(ctx: void, lhs: []const u8, rhs: []const u8) bool {
_ = ctx;
return std.mem.lessThan(u8, lhs, rhs);
}
};
std.mem.sort([]const u8, paths.items, {}, SortFn.lessThan);
var buffer: [2000]u8 = undefined;
var stdout_writer = std.fs.File.stdout().writerStreaming(&buffer);
const w = &stdout_writer.interface;
try w.writeAll("#define _XOPEN_SOURCE\n");
for (paths.items) |path| {
try w.print("#include <{s}>\n", .{path});
}
try w.writeAll(
\\int main(int argc, char **argv) {
\\ return 0;
\\}
);
try w.flush();
}
fn findHeaders(
arena: Allocator,
dir: std.fs.Dir,
prefix: []const u8,
paths: *std.array_list.Managed([]const u8),
) anyerror!void {
var it = dir.iterate();
while (try it.next()) |entry| {
switch (entry.kind) {
.directory => {
const path = try std.fs.path.join(arena, &.{ prefix, entry.name });
var subdir = try dir.openDir(entry.name, .{ .no_follow = true });
defer subdir.close();
try findHeaders(arena, subdir, path, paths);
},
.file, .sym_link => {
const ext = std.fs.path.extension(entry.name);
if (!std.mem.eql(u8, ext, ".h")) continue;
const path = try std.fs.path.join(arena, &.{ prefix, entry.name });
try paths.append(path);
},
else => {},
}
}
}
|
