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| author | Mattias Andrée <m@maandree.se> | 2026-01-26 18:31:24 +0100 |
|---|---|---|
| committer | Mattias Andrée <m@maandree.se> | 2026-01-26 18:31:24 +0100 |
| commit | d2569edaafac2c92a9782327370ad11e1f878495 (patch) | |
| tree | 3c4542e716a73154c280ad07fb5358c4e89782e3 /libcharconv_metrical.c | |
| parent | Clean up (diff) | |
| download | charconv-d2569edaafac2c92a9782327370ad11e1f878495.tar.gz charconv-d2569edaafac2c92a9782327370ad11e1f878495.tar.bz2 charconv-d2569edaafac2c92a9782327370ad11e1f878495.tar.xz | |
Add metrical
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to 'libcharconv_metrical.c')
| -rw-r--r-- | libcharconv_metrical.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/libcharconv_metrical.c b/libcharconv_metrical.c new file mode 100644 index 0000000..2518a2b --- /dev/null +++ b/libcharconv_metrical.c @@ -0,0 +1,51 @@ +/* See LICENSE file for copyright and license details. */ +#include "lib-common.h" + + +enum libcharconv_result +libcharconv_metrical(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp) +{ + uint_least32_t c; + *n = 0; + for (; slen--; s++) { + switch (*s) { + case '1': c = UINT32_C(0x23D1); goto conv; + case '2': c = UINT32_C(0x23D6); goto conv; + case '3': c = UINT32_C(0x23D7); goto conv; + case '4': c = UINT32_C(0x23D8); goto conv; + case '5': c = UINT32_C(0x23D9); goto conv; + case '-': + case '_': + if (!slen) + return LIBCHARCONV_INDETERMINATE; + if (s[1] != '1' && s[1] != '2') + goto no_match; + c = UINT32_C(0x23D2) + (s[0] == '_' ? 1u : 0u) + (s[1] == '2' ? 2u : 0u); + goto conv2; + default: + no_match: + *n += 1u; + break; + } + } +no_conv: + return LIBCHARCONV_NO_CONVERT; + +conv: + if (*n) + goto no_conv; + if (*ncp) + *cp = c; + *n += 1u; + *ncp = 1u; + return LIBCHARCONV_CONVERTED; + +conv2: + if (*n) + goto no_conv; + if (*ncp) + *cp = c; + *n += 2u; + *ncp = 1u; + return LIBCHARCONV_CONVERTED; +} |