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| author | Kenichi Handa <handa@m17n.org> | 2008-12-30 23:42:40 +0000 |
|---|---|---|
| committer | Kenichi Handa <handa@m17n.org> | 2008-12-30 23:42:40 +0000 |
| commit | c19cab20a1a9fe9b00f21fef3a3fc3c559ce0710 (patch) | |
| tree | 322c2d56af48e6b3fce560295e422f96f5b9b264 /src/character.h | |
| parent | 78a2f9cd5362633833419cbcbc3cefa2e65d10a3 (diff) | |
| download | emacs-c19cab20a1a9fe9b00f21fef3a3fc3c559ce0710.tar.gz | |
(CHAR_VARIATION_SELECTOR_P): New macro.
(CHAR_SURROGATE_PAIR_P): New macro.
Diffstat (limited to 'src/character.h')
| -rw-r--r-- | src/character.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/character.h b/src/character.h index 34e696e5083..a766b767eb3 100644 --- a/src/character.h +++ b/src/character.h @@ -610,6 +610,26 @@ extern char unibyte_has_multibyte_table[256]; ? ASCII_CHAR_WIDTH (c) \ : XINT (CHAR_TABLE_REF (Vchar_width_table, c))) +/* If C is a variation selector, return the index numnber of the + variation selector (1..256). Otherwise, return 0. */ + +#define CHAR_VARIATION_SELECTOR_P(c) \ + ((c) < 0xFE00 ? 0 \ + : (c) <= 0xFE0F ? (c) - 0xFE00 + 1 \ + : (c) < 0xE0100 ? 0 \ + : (c) <= 0xE01EF ? (c) - 0xE0100 + 17 \ + : 0) + +/* If C is a high surrogate, return 1. If C is a low surrogate, + return 0. Otherwise, return 0. */ + +#define CHAR_SURROGATE_PAIR_P(c) \ + ((c) < 0xD800 ? 0 \ + : (c) <= 0xDBFF ? 1 \ + : (c) <= 0xDFFF ? 2 \ + : 0) + + extern int char_resolve_modifier_mask P_ ((int)); extern int char_string P_ ((unsigned, unsigned char *)); extern int string_char P_ ((const unsigned char *, |