From 4f93f935dc7a981ca073a322425c3f5929ffb644 Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Sun, 21 Jan 2024 03:03:58 +0100 Subject: Support line- & column-based match locations --- vendor/librune/lib/utf8/u8tor_uc.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 vendor/librune/lib/utf8/u8tor_uc.c (limited to 'vendor/librune/lib/utf8/u8tor_uc.c') diff --git a/vendor/librune/lib/utf8/u8tor_uc.c b/vendor/librune/lib/utf8/u8tor_uc.c new file mode 100644 index 0000000..ea57332 --- /dev/null +++ b/vendor/librune/lib/utf8/u8tor_uc.c @@ -0,0 +1,24 @@ +#include "utf8.h" + +#include "internal/common.h" + +int +u8tor_uc(rune *ch, const char8_t *s) +{ + if (U1(s[0])) { + *ch = s[0]; + return 1; + } else if (U2(s[0])) { + *ch = ((s[0] & 0x1F) << 6) | (s[1] & 0x3F); + return 2; + } else if (U3(s[0])) { + *ch = ((s[0] & 0x0F) << 12) | ((s[1] & 0x3F) << 6) | (s[2] & 0x3F); + return 3; + } else if (U4(s[0])) { + *ch = ((s[0] & 0x07) << 18) | ((s[1] & 0x3F) << 12) + | ((s[2] & 0x3F) << 6) | (s[3] & 0x3F); + return 4; + } + + unreachable(); +} -- cgit v1.2.3