From e9b19895c2322f1b9753f67fbe3124eb99bcfe16 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 25 Jan 2026 09:57:16 +0100 Subject: Add braille MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libcharconv_braille.c | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 62 insertions(+) create mode 100644 libcharconv_braille.c (limited to 'libcharconv_braille.c') diff --git a/libcharconv_braille.c b/libcharconv_braille.c new file mode 100644 index 0000000..3a9807e --- /dev/null +++ b/libcharconv_braille.c @@ -0,0 +1,62 @@ +/* See LICENSE file for copyright and license details. */ +#include "lib-common.h" + + +enum libcharconv_result +libcharconv_braille(const char *s, size_t slen, size_t *n, uint_least32_t *cp, size_t *ncp) +{ + unsigned pattern, dot; + uint_least32_t c; + *n = 0; + for (; slen--; s++) { + if (s[0] == '0') { + if (*n) + goto no_conv; + c = UINT32_C(0x2800); + *n = 1u; + goto conv; + } else if ('1' <= s[0] && s[0] <= '8') { + if (*n) + goto no_conv; + pattern = 1u << (s[0] - '1'); + *n = 1u; + for (;;) { + if (!slen--) + goto indeterminate; + if ('1' <= s[*n] && s[*n] <= '8') { + dot = 1u << (s[*n] - '1'); + if (pattern & dot) + break; + pattern |= dot; + *n += 1u; + } else if (s[*n] == '0') { + *n += 1u; + break; + } else { + break; + } + } + c = UINT32_C(0x2800) | pattern; + goto conv; + } else { + *n += 1u; + } + } + return LIBCHARCONV_NO_CONVERT; + +no_conv: + if (!*n) + *n = 1u; + return LIBCHARCONV_NO_CONVERT; + +indeterminate: + if (*n) + goto no_conv; + return LIBCHARCONV_INDETERMINATE; + +conv: + if (*ncp) + *cp = c; + *ncp = 1u; + return LIBCHARCONV_CONVERTED; +} -- cgit v1.2.3-70-g09d2