diff options
| author | Fabrice Bellard <fabrice@bellard.org> | 2023-12-09 12:28:51 +0100 |
|---|---|---|
| committer | Fabrice Bellard <fabrice@bellard.org> | 2023-12-09 12:28:51 +0100 |
| commit | 20a57f90d7c3b9916424d7db55d17dc354f3a636 (patch) | |
| tree | b7874e2c1557ca0e8792b948c4766c0838345cbf /libregexp.c | |
| parent | 4949d75dafcd3401aac4cc75e76bbd680fc67b47 (diff) | |
| download | quickjs-20a57f90d7c3b9916424d7db55d17dc354f3a636.tar.gz quickjs-20a57f90d7c3b9916424d7db55d17dc354f3a636.zip | |
Implement extended named capture group identifiers (bnoordhuis)
Diffstat (limited to 'libregexp.c')
| -rw-r--r-- | libregexp.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/libregexp.c b/libregexp.c index 379bfc7..dab8fa1 100644 --- a/libregexp.c +++ b/libregexp.c @@ -1071,11 +1071,10 @@ static int re_is_simple_quantifier(const uint8_t *bc_buf, int bc_buf_len) } /* '*pp' is the first char after '<' */ -static int re_parse_group_name(char *buf, int buf_size, - const uint8_t **pp, BOOL is_utf16) +static int re_parse_group_name(char *buf, int buf_size, const uint8_t **pp) { - const uint8_t *p; - uint32_t c; + const uint8_t *p, *p1; + uint32_t c, d; char *q; p = *pp; @@ -1086,11 +1085,18 @@ static int re_parse_group_name(char *buf, int buf_size, p++; if (*p != 'u') return -1; - c = lre_parse_escape(&p, is_utf16 * 2); + c = lre_parse_escape(&p, 2); // accept surrogate pairs } else if (c == '>') { break; } else if (c >= 128) { c = unicode_from_utf8(p, UTF8_CHAR_LEN_MAX, &p); + if (c >= 0xD800 && c <= 0xDBFF) { + d = unicode_from_utf8(p, UTF8_CHAR_LEN_MAX, &p1); + if (d >= 0xDC00 && d <= 0xDFFF) { + c = 0x10000 + 0x400 * (c - 0xD800) + (d - 0xDC00); + p = p1; + } + } } else { p++; } @@ -1140,8 +1146,7 @@ static int re_parse_captures(REParseState *s, int *phas_named_captures, /* potential named capture */ if (capture_name) { p += 3; - if (re_parse_group_name(name, sizeof(name), &p, - s->is_utf16) == 0) { + if (re_parse_group_name(name, sizeof(name), &p) == 0) { if (!strcmp(name, capture_name)) return capture_index; } @@ -1314,7 +1319,7 @@ static int re_parse_term(REParseState *s, BOOL is_backward_dir) } else if (p[2] == '<') { p += 3; if (re_parse_group_name(s->u.tmp_buf, sizeof(s->u.tmp_buf), - &p, s->is_utf16)) { + &p)) { return re_parse_error(s, "invalid group name"); } if (find_group_name(s, s->u.tmp_buf) > 0) { @@ -1378,7 +1383,7 @@ static int re_parse_term(REParseState *s, BOOL is_backward_dir) } p1 += 3; if (re_parse_group_name(s->u.tmp_buf, sizeof(s->u.tmp_buf), - &p1, s->is_utf16)) { + &p1)) { if (s->is_utf16 || re_has_named_captures(s)) return re_parse_error(s, "invalid group name"); else |