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User.fromLine

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Motiejus Jakštys 2022-06-29 13:55:53 +03:00
parent 5d171883a7
commit e7fb0c18d4
1 changed files with 23 additions and 31 deletions
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54
src/User.zig
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@ -48,44 +48,36 @@ pub fn clone(
// User. // User.
fn fromLine(allocator: Allocator, err: *ErrCtx, line: []const u8) error{ InvalidRecord, OutOfMemory }!User { fn fromLine(allocator: Allocator, err: *ErrCtx, line: []const u8) error{ InvalidRecord, OutOfMemory }!User {
var it = mem.split(u8, line, ":"); var it = mem.split(u8, line, ":");
const name = it.next(); const name = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
_ = it.next(); // password _ = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord); // password
const uids = it.next(); const uids = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
const gids = it.next(); const gids = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
const gecos = it.next(); const gecos = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
const home = it.next(); const home = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
const shell = it.next(); const shell = it.next() orelse return err.returnf("too few fields", .{}, error.InvalidRecord);
// all fields are set const uid = fmt.parseInt(u32, uids, 10) catch
if (shell == null) return err.returnf("bad uid: {s}", .{uids}, error.InvalidRecord);
return err.returnf("too few user fields in line: {s}", .{line}, error.InvalidRecord);
// the line must be exhaustive. const gid = fmt.parseInt(u32, gids, 10) catch
if (it.next() != null) return err.returnf("bad gid: {s}", .{gids}, error.InvalidRecord);
return error.returnf("too many fields in line", .{}, error.InvalidRecord);
const uid = fmt.parseInt(u32, uids.?, 10) catch validate.name(name, err) catch
return err.returnf("bad uid: {s}", .{uids.?}, error.InvalidRecord); return err.returnf("invalid name '{s}'", .{name}, error.InvalidRecord);
validate.gecos(gecos, err) catch
const gid = fmt.parseInt(u32, gids.?, 10) catch return err.returnf("invalid gecos '{s}'", .{gecos}, error.InvalidRecord);
return err.returnf("bad uid: {s}", .{gids.?}, error.InvalidRecord); validate.path(home, err) catch
return err.returnf("invalid home '{s}'", .{home}, error.InvalidRecord);
validate.name(name.?, err) catch validate.path(shell, err) catch
return err.returnf("invalid name '{s}'", .{name.?}, error.InvalidRecord); return err.returnf("invalid shell '{s}'", .{shell}, error.InvalidRecord);
validate.gecos(gecos.?, err) catch
return err.returnf("invalid gecos '{s}'", .{gecos.?}, error.InvalidRecord);
validate.path(home.?, err) catch
return err.returnf("invalid home '{s}'", .{home.?}, error.InvalidRecord);
validate.path(shell.?, err) catch
return err.returnf("invalid shell '{s}'", .{shell.?}, error.InvalidRecord);
const user = User{ const user = User{
.uid = uid, .uid = uid,
.gid = gid, .gid = gid,
.name = name.?, .name = name,
.gecos = gecos.?, .gecos = gecos,
.home = home.?, .home = home,
.shell = shell.?, .shell = shell,
}; };
return try user.clone(allocator); return try user.clone(allocator);
} }