diff options
| author | Mattias Andrée <m@maandree.se> | 2026-01-24 21:31:58 +0100 |
|---|---|---|
| committer | Mattias Andrée <m@maandree.se> | 2026-01-24 21:31:58 +0100 |
| commit | 6b568aa1bca7f7f502af7b57303ec2673b331c8f (patch) | |
| tree | 584870f81a8f5ecb093af3ff05aab8114de96b7d /libcharconv_domino_tiles_vertical.c | |
| parent | Add superscript and subscript (so far only with digits) and lycian and lydian (diff) | |
| download | charconv-6b568aa1bca7f7f502af7b57303ec2673b331c8f.tar.gz charconv-6b568aa1bca7f7f502af7b57303ec2673b331c8f.tar.bz2 charconv-6b568aa1bca7f7f502af7b57303ec2673b331c8f.tar.xz | |
Add domino tiles
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to 'libcharconv_domino_tiles_vertical.c')
| -rw-r--r-- | libcharconv_domino_tiles_vertical.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libcharconv_domino_tiles_vertical.c b/libcharconv_domino_tiles_vertical.c new file mode 100644 index 0000000..0df1841 --- /dev/null +++ b/libcharconv_domino_tiles_vertical.c @@ -0,0 +1,85 @@ +/* See LICENSE file for copyright and license details. */ +#include "lib-common.h" + + +enum libcharconv_result +libcharconv_domino_tiles_vertical(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp) +{ + uint_least32_t c; + int vertical; + *n = 0; + for (; slen--; s++) { + if ('0' <= s[0] && s[0] <= '6') { + if (!slen--) + return LIBCHARCONV_INDETERMINATE; + vertical = 1; + if (s[1] == '|') + vertical = 0; + else if (s[1] == '-') + vertical = 1; + else if ('0' <= s[1] && s[1] <= '6') + goto conv2; + else + goto no_match; + if (!slen--) + return LIBCHARCONV_INDETERMINATE; + if ('0' <= s[2] && s[2] <= '6') + goto conv3; + goto no_match; + } else if (s[0] == '#') { + if (!slen--) + return LIBCHARCONV_INDETERMINATE; + vertical = 1; + if (s[1] == '|') + vertical = 0; + else if (s[1] == '-') + vertical = 1; + else if (s[1] == '#') + goto conv2; + else + goto no_match; + if (!slen--) + return LIBCHARCONV_INDETERMINATE; + if (s[2] == '#') + goto conv3; + goto no_match; + } else { + no_match: + *n += 1u; + } + } +no_conv: + return LIBCHARCONV_NO_CONVERT; + +conv2: + if (*n) + goto no_conv; + if (*ncp) { + if (s[0] == '#') + c = UINT32_C(0x1F030); + else + c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[1] - '0'); + if (vertical) + c += UINT32_C(0x1F062) - UINT32_C(0x1F030); + *cp = c; + } + *n += 2u; + *ncp = 1u; + return LIBCHARCONV_CONVERTED; + +conv3: + if (*n) + goto no_conv; + if (*ncp) { + if (s[0] == '#') + c = UINT32_C(0x1F030); + else + c = UINT32_C(0x1F031) + (unsigned)(s[0] - '0') * 7u + (unsigned)(s[2] - '0'); + if (vertical) + c += UINT32_C(0x1F062) - UINT32_C(0x1F030); + *cp = c; + } + *n += 3u; + *ncp = 1u; + return LIBCHARCONV_CONVERTED; +} |