From 60402ec01fe1f56034dbf5a453aace73c1a95f9a Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 24 Jan 2026 18:20:57 +0100 Subject: Add variation selectors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libcharconv_variation_selectors.c | 54 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 libcharconv_variation_selectors.c (limited to 'libcharconv_variation_selectors.c') diff --git a/libcharconv_variation_selectors.c b/libcharconv_variation_selectors.c new file mode 100644 index 0000000..a5ec8e0 --- /dev/null +++ b/libcharconv_variation_selectors.c @@ -0,0 +1,54 @@ +/* See LICENSE file for copyright and license details. */ +#include "lib-common.h" + + +enum libcharconv_result +libcharconv_variation_selectors(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp) +{ + enum libcharconv_result ret = LIBCHARCONV_CONVERTED; + uint_least32_t c; + *n = 0; + for (; slen--; s++) { + if ('1' <= s[0] && s[0] <= '9') { + c = (uint_least32_t)(s[0] - '0'); + if (!slen--) + goto conv_if_end; + if ('0' > s[1] || s[1] > '9') + goto conv; + c *= 10u; + c += (uint_least32_t)(s[1] - '0'); + if (!slen--) + goto conv_if_end; + if ('0' > s[2] || s[2] > '9') + goto conv; + c *= 10u; + c += (uint_least32_t)(s[2] - '0'); + if (c > 256u) { + c /= 10u; + goto conv; + } + goto conv; + } else { + *n += 1u; + break; + } + } +no_conv: + return LIBCHARCONV_NO_CONVERT; + +conv_if_end: + ret = LIBCHARCONV_CONVERT_IF_END; +conv: + if (*n) + goto no_conv; + *n = c < 10u ? 1u : c < 100u ? 2u : 3u; + if (c < 17u) + c = UINT32_C(0xFE00) + (c - 1u); + else + c = UINT32_C(0xE0100) + (c - 17u); + if (*ncp) + *cp = c; + *ncp = 1u; + return ret; + +} -- cgit v1.2.3-70-g09d2