motiejus/hermetic_cc_toolchain
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launcher: formatting

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no real changes. Code looks a bit less ugly now.
This commit is contained in:
Motiejus Jakštys 2023-01-30 17:17:51 -08:00
parent f92ef2d8d4
commit 3ba59fcb78
1 changed files with 43 additions and 57 deletions
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100
toolchain/launcher.zig
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@ -113,28 +113,20 @@ pub fn main() u8 {
defer arena_allocator.deinit();
const arena = arena_allocator.allocator();
var argv_it = process.argsWithAllocator(arena) catch |err| {
std.debug.print("error parsing args: {s}\n", .{@errorName(err)});
return 1;
};
var argv_it = process.argsWithAllocator(arena) catch |err|
return fatal("error parsing args: {s}\n", .{@errorName(err)});
const action = parseArgs(arena, fs.cwd(), &argv_it) catch |err| {
std.debug.print("error: {s}\n", .{@errorName(err)});
return 1;
};
const action = parseArgs(arena, fs.cwd(), &argv_it) catch |err|
return fatal("error: {s}\n", .{@errorName(err)});
switch (action) {
.early_ok => return 0,
.early_err => |msg| {
std.io.getStdErr().writeAll(msg) catch {};
return 1;
},
.early_err => |msg| return fatal(msg),
.exec => |params| {
if (builtin.os.tag == .windows) {
return spawnWindows(arena, params);
} else {
if (builtin.os.tag == .windows)
return spawnWindows(arena, params)
else
return execUnix(arena, params);
}
},
}
}
@ -142,20 +134,15 @@ pub fn main() u8 {
fn spawnWindows(arena: mem.Allocator, params: ExecParams) u8 {
var proc = ChildProcess.init(params.args.items, arena);
proc.env_map = &params.env;
const ret = proc.spawnAndWait() catch |err| {
std.debug.print(
"error spawning {s}: {s}\n",
.{ params.args.items[0], @errorName(err) },
);
return 1;
};
const ret = proc.spawnAndWait() catch |err|
return fatal(
"error spawning {s}: {s}\n",
.{ params.args.items[0], @errorName(err) },
);
switch (ret) {
.Exited => |code| return code,
else => |other| {
std.debug.print("abnormal exit: {any}\n", .{other});
return 1;
},
else => |other| return fatal("abnormal exit: {any}\n", .{other}),
}
}
@ -178,7 +165,7 @@ fn parseArgs(
argv_it: anytype,
) error{OutOfMemory}!ParseResults {
const arg0 = argv_it.next() orelse
return fatal(arena, "error: argv[0] cannot be null", .{});
return parseFatal(arena, "error: argv[0] cannot be null", .{});
const zig_tool = blk: {
const b = fs.path.basename(arg0);
@ -191,9 +178,10 @@ fn parseArgs(
const maybe_target = getTarget(arg0) catch |err| switch (err) {
error.BadParent => {
const fmt_args = .{ .zig_tool = zig_tool, .exe = EXE };
if (mem.eql(u8, zig_tool, "c++")) {
return fatal(arena, usage_cpp, fmt_args);
} else return fatal(arena, usage_other, fmt_args);
if (mem.eql(u8, zig_tool, "c++"))
return parseFatal(arena, usage_cpp, fmt_args)
else
return parseFatal(arena, usage_other, fmt_args);
},
else => |e| return e,
};
@ -220,13 +208,9 @@ fn parseArgs(
&[_][]const u8{ root, "zig" ++ EXE },
);
var env = process.getEnvMap(arena) catch |err| {
return fatal(
arena,
"error getting process environment: {s}",
.{@errorName(err)},
);
};
var env = process.getEnvMap(arena) catch |err|
return parseFatal(arena, "error getting env: {s}", .{@errorName(err)});
try env.put("ZIG_LIB_DIR", zig_lib_dir);
try env.put("ZIG_LOCAL_CACHE_DIR", CACHE_DIR);
try env.put("ZIG_GLOBAL_CACHE_DIR", CACHE_DIR);
@ -246,7 +230,7 @@ fn parseArgs(
return ParseResults{ .exec = .{ .args = args, .env = env } };
}
fn fatal(
fn parseFatal(
arena: mem.Allocator,
comptime fmt: []const u8,
args: anytype,
@ -255,6 +239,11 @@ fn fatal(
return ParseResults{ .early_err = msg };
}
pub fn fatal(comptime fmt: []const u8, args: anytype) u8 {
fmt.debug.print(fmt, args);
return 1;
}
// Golang probing for a particular linker flag causes many unneeded stubs to be
// built, e.g. glibc, musl, libc++. The hackery can probably be deleted after
// Go 1.20 is released. In particular,
@ -278,28 +267,25 @@ fn getTarget(self_exe: []const u8) error{BadParent}!?[]const u8 {
// strings `is.it.x86_64?-stallinux,macos-`; we are trying to aid users
// that run things from the wrong directory, not trying to punish the ones
// having fun.
{
var it = mem.split(u8, triple, "-");
if (it.next()) |arch| {
if (mem.indexOf(u8, "aarch64,x86_64", arch) == null)
return error.BadParent;
} else return error.BadParent;
var it = mem.split(u8, triple, "-");
if (it.next()) |got_os| {
if (mem.indexOf(u8, "linux,macos,windows", got_os) == null)
return error.BadParent;
} else return error.BadParent;
const arch = it.next() orelse return error.BadParent;
if (mem.indexOf(u8, "aarch64,x86_64", arch) == null)
return error.BadParent;
// ABI triple is too much of a moving target
if (it.next() == null) return error.BadParent;
const got_os = it.next() orelse return error.BadParent;
if (mem.indexOf(u8, "linux,macos,windows", got_os) == null)
return error.BadParent;
// but the target needs to have 3 dashes.
if (it.next() != null) return error.BadParent;
}
// ABI triple is too much of a moving target
if (it.next() == null) return error.BadParent;
// but the target needs to have 3 dashes.
if (it.next() != null) return error.BadParent;
if (mem.eql(u8, "c++" ++ EXE, fs.path.basename(self_exe))) {
return triple;
} else return null;
if (mem.eql(u8, "c++" ++ EXE, fs.path.basename(self_exe)))
return triple
else
return null;
}
fn comptimeSplit(comptime str: []const u8) [countWords(str)][]const u8 {