diff options
Diffstat (limited to 'src/nvim/eval/decode.c')
| -rw-r--r-- | src/nvim/eval/decode.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/src/nvim/eval/decode.c b/src/nvim/eval/decode.c index 29841db1b6..05dc1c97c4 100644 --- a/src/nvim/eval/decode.c +++ b/src/nvim/eval/decode.c @@ -340,12 +340,12 @@ int json_decode_string(const char *const buf, const size_t len, goto json_decode_string_fail; } char *str = xmalloc(len + 1); - uint16_t fst_in_pair = 0; + int fst_in_pair = 0; char *str_end = str; for (const char *t = s; t < p; t++) { if (t[0] != '\\' || t[1] != 'u') { if (fst_in_pair != 0) { - str_end += utf_char2bytes((int) fst_in_pair, (char_u *) str_end); + str_end += utf_char2bytes(fst_in_pair, (char_u *) str_end); fst_in_pair = 0; } } @@ -353,20 +353,21 @@ int json_decode_string(const char *const buf, const size_t len, t++; switch (*t) { case 'u': { - char ubuf[] = { t[1], t[2], t[3], t[4], 0 }; + const char ubuf[] = { t[1], t[2], t[3], t[4], 0 }; t += 4; unsigned long ch; vim_str2nr((char_u *) ubuf, NULL, NULL, 0, 0, 2, NULL, &ch); - if (0xD800UL <= ch && ch <= 0xDB7FUL) { - fst_in_pair = (uint16_t) ch; - } else if (0xDC00ULL <= ch && ch <= 0xDB7FUL) { - if (fst_in_pair != 0) { - int full_char = ( - (int) (ch - 0xDC00UL) - + (((int) (fst_in_pair - 0xD800)) << 10) - ); - str_end += utf_char2bytes(full_char, (char_u *) str_end); - } + if (SURROGATE_HI_START <= ch && ch <= SURROGATE_HI_END) { + fst_in_pair = (int) ch; + } else if (SURROGATE_LO_START <= ch && ch <= SURROGATE_LO_END + && fst_in_pair != 0) { + const int full_char = ( + (int) (ch - SURROGATE_LO_START) + + ((fst_in_pair - SURROGATE_HI_START) << 10) + + SURROGATE_FIRST_CHAR + ); + str_end += utf_char2bytes(full_char, (char_u *) str_end); + fst_in_pair = 0; } else { str_end += utf_char2bytes((int) ch, (char_u *) str_end); } |