From 606483d647c3167f4db87d43ff94c797ca711b03 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Mon, 26 Jan 2026 20:47:06 +0100 Subject: Add counting rods MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libcharconv_counting_rods.c | 52 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 libcharconv_counting_rods.c (limited to 'libcharconv_counting_rods.c') diff --git a/libcharconv_counting_rods.c b/libcharconv_counting_rods.c new file mode 100644 index 0000000..f50433c --- /dev/null +++ b/libcharconv_counting_rods.c @@ -0,0 +1,52 @@ +/* See LICENSE file for copyright and license details. */ +#include "lib-common.h" + + +enum libcharconv_result +libcharconv_counting_rods(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++) { + if ('1' <= *s && *s <= '9') { + c = UINT32_C(0x13D60) + (unsigned)(*s - '1'); + if (!slen) + goto conv_if_end; + if (s[1] != '0') + goto conv1; + c += 9u; + goto conv2; + } else { + *n += 1u; + } + } +no_conv: + return LIBCHARCONV_NO_CONVERT; + +conv_if_end: + if (*n) + goto no_conv; + if (*ncp) + *cp = c; + *n += 1u; + *ncp = 1u; + return LIBCHARCONV_CONVERT_IF_END; + +conv1: + 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; +} -- cgit v1.2.3-70-g09d2