From 9d247dc831569a4db75ec9466d1a988a82dfba29 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Fri, 23 Oct 2026 21:09:14 +0200 Subject: First commit MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libutf8_encode.c | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 libutf8_encode.c (limited to 'libutf8_encode.c') diff --git a/libutf8_encode.c b/libutf8_encode.c new file mode 100644 index 0000000..ab8567e --- /dev/null +++ b/libutf8_encode.c @@ -0,0 +1,60 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" +#ifndef TEST + + +size_t +libutf8_encode(char *out_buffer, uint_least32_t codepoint) +{ + size_t n = libutf8_encode_measure(codepoint); + ENCODE(n); + return n; +} + + +#else + + +int +main(void) +{ + /* Already mostly tested in libutf8_encode_measure */ + + uint_least32_t cp; + char buf[128]; + char ones[128]; + unsigned char bit; + size_t i, n; + + SET_UP_TEST(); + + memset(ones, 255, sizeof(ones)); + + for (cp = 0u; cp < (uint_least32_t)0x200000ul; cp++) { + memset(buf, 255, sizeof(buf)); + n = libutf8_encode(buf, cp); + assert(!memcmp(&buf[n], ones, sizeof(buf) - n)); + + for (i = 1u; i < n; i++) + assert(((unsigned char)buf[i] & 0xC0u) == 0x80u); + + if (n == 1u) { + assert(((unsigned char)buf[0u] & 0x80u) == 0x00u); + continue; + } + + bit = (unsigned char)0x80u; + for (i = 0u; i < n; i++, bit >>= 1) + assert((unsigned char)buf[0u] & bit); + assert(!((unsigned char)buf[0u] & bit)); + } + + memset(buf, 255, sizeof(buf)); + assert(libutf8_encode(buf, (uint_least32_t)1 << 31) == 0u); + assert(!memcmp(buf, ones, sizeof(buf))); + + return 0; +} + + +#endif -- cgit v1.3.1