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authorThomas Voss <mail@thomasvoss.com> 2024-01-21 03:03:58 +0100
committerThomas Voss <mail@thomasvoss.com> 2024-01-21 03:03:58 +0100
commit4f93f935dc7a981ca073a322425c3f5929ffb644 (patch)
tree4460586408ec7fdfcecf3ba4584f0435067125a6 /vendor/librune/lib/utf8/u8tor_uc.c
parent72ea25a4d73e3e026366d4165f5bc4ec9e7418cb (diff)
Support line- & column-based match locations
Diffstat (limited to 'vendor/librune/lib/utf8/u8tor_uc.c')
-rw-r--r--vendor/librune/lib/utf8/u8tor_uc.c24
1 files changed, 24 insertions, 0 deletions
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();
+}