| 1 | module dtm |
| 2 | |
| 3 | import strings |
| 4 | |
| 5 | fn filter(s string) string { |
| 6 | mut escaped := strings.new_builder(s.len) |
| 7 | for i := 0; i < s.len; i++ { |
| 8 | match s[i] { |
| 9 | `&` { |
| 10 | escaped.write_string('&') |
| 11 | } |
| 12 | `<` { |
| 13 | escaped.write_string('<') |
| 14 | } |
| 15 | `>` { |
| 16 | escaped.write_string('>') |
| 17 | } |
| 18 | `"` { |
| 19 | escaped.write_string('"') |
| 20 | } |
| 21 | `'` { |
| 22 | escaped.write_string(''') |
| 23 | } |
| 24 | else { |
| 25 | escaped.write_u8(s[i]) |
| 26 | } |
| 27 | } |
| 28 | } |
| 29 | return escaped.str() |
| 30 | } |
| 31 |