| 49 | /* ── String literal helpers ──────────────────────────────────────── */ |
| 50 | |
| 51 | static const char *unquote_string(CBMArena *a, const char *s) { |
| 52 | if (!s) { |
| 53 | return NULL; |
| 54 | } |
| 55 | size_t len = strlen(s); |
| 56 | if (len < CBM_QUOTE_PAIR) { |
| 57 | return NULL; |
| 58 | } |
| 59 | char first = s[0]; |
| 60 | char last = s[len - CBM_QUOTE_OFFSET]; |
| 61 | if ((first == '"' && last == '"') || (first == '\'' && last == '\'') || |
| 62 | (first == '`' && last == '`')) { |
| 63 | return cbm_arena_strndup(a, s + CBM_QUOTE_OFFSET, len - CBM_QUOTE_PAIR); |
| 64 | } |
| 65 | return NULL; |
| 66 | } |
| 67 | |
| 68 | /* Extract a literal channel name from an argument node. Returns NULL if the |
| 69 | * argument is not a plain string literal (caller can then try identifier |
no test coverage detected